fix makefile

Add some cflow & scope support.
Separate out DEFS from CFLAGS.
Remove inlines and use unique function names.

Makefile.in

@@ -24,8 +24,13 @@ endif
 
 SUBDIRS += lib tools daemons
 
+ifeq ("@DMEVENTD@", "yes")
+  SUBDIRS += dmeventd
+endif
+
 ifeq ($(MAKECMDGOALS),distclean)
   SUBDIRS += daemons/clvmd \
+	     dmeventd \
 	     lib/format1 \
 	     lib/format_pool \
 	     lib/locking \
@@ -40,13 +45,25 @@ include make.tmpl
 daemons: lib
 lib: include
 tools: lib
-po: tools daemons
+dmeventd: tools
+po: tools daemons dmeventd
 
 ifeq ("@INTL@", "yes")
 lib.pofile: include.pofile
 tools.pofile: lib.pofile
 daemons.pofile: lib.pofile
-po.pofile: tools.pofile daemons.pofile
+dmeventd.pofile: tools.pofile
+po.pofile: tools.pofile daemons.pofile dmeventd.pofile
 pofile: po.pofile
 endif
 
+ifneq ("@CFLOW_CMD@", "")
+tools.cflow: lib.cflow
+cflow: tools.cflow
+endif
+
+ifneq ("@CSCOPE_CMD@", "")
+cscope.out: tools
+	@CSCOPE_CMD@ -b -R
+all: cscope.out
+endif

VERSION

@@ -1 +1 @@
-2.02.00-cvs (2005-10-16)
+2.02.04-cvs (2006-04-14)

WHATS_NEW

@@ -1,5 +1,63 @@
-Version 2.02.00 - 
+Version 2.02.04 - 
+=================================
+  Check for libsepol.
+  Add some cflow & scope support.
+  Separate out DEFS from CFLAGS.
+  Remove inlines and use unique function names.
+
+Version 2.02.03 - 14th April 2006
+=================================
+  vgrename accepts vgid and exported VG.
+  Add --partial to pvs.
+  When choosing between identically-named VGs, also consider creation_host.
+  Provide total log suppression with 2.
+  Fix vgexport/vgimport to set/reset PV exported flag so pv_attr is correct.
+  Add vgid to struct physical_volume and pass with vg_name to some functions.
+  If two or more VGs are found with the same name, use one that is not exported.
+  Whenever vgname is captured, also capture vgid and whether exported.
+  Remove an incorrect unlock_vg() from process_each_lv().
+  Update extent size information in vgchange and vgcreate man pages.
+  Introduce origin_from_cow() and lv_is_visible().
+  pvremove without -f now fails if there's no PV label.
+  Support lvconvert -s.
+  Suppress locking library load failure message if --ignorelockingfailure.
+  Propagate partial mode around cluster.
+  Fix archive file expiration.
+  Fix dmeventd build.
+  clvmd now uses libcman rather than cman ioctls.
+  clvmd will allow new cman to shutdown on request.
+
+Version 2.02.02 - 7th February 2006
 ===================================
+  Add %.so: %.a make template rule.
+  Switchover library building to use LIB_SUFFIX.
+  Only do lockfs filesystem sync when suspending snapshots.
+  Always print warning if activation is disabled.
+  vgreduce removes mirror images.
+  Add --mirrorsonly to vgreduce.
+  vgreduce replaces active LVs with error segment before removing them.
+  Set block_on_error parameter if available.
+  Add target_version.
+  Add details to format1 'Invalid LV in extent map' error message.
+  Fix lvscan snapshot full display.
+  Bring lvdisplay man page example into line.
+  Add mirror dmeventd library.
+  Add some activation logic to remove_mirror_images().
+  lvconvert can remove specified PVs from a mirror.
+  lvconvert turns an existing LV into a mirror.
+  Allow signed mirrors arguments.
+  Move create_mirror_log() into toollib.
+  Determine parallel PVs to avoid with ALLOC_NORMAL allocation.
+  Fix lv_empty.
+
+Version 2.02.01 - 23rd November 2005
+====================================
+  Fix lvdisplay cmdline to accept snapshots.
+  Fix open RO->RW promotion.
+  Fix missing vg_revert in lvcreate error path.
+
+Version 2.02.00 - 10th November 2005
+====================================
   Extend allocation areas to avoid overflow with contiguous with other PVs.
   Stop lvcreate attempting to wipe zero or error segments.
   Added new lvs table attributes.

WHATS_NEW_DM

@@ -1,4 +1,51 @@
-Version 1.02.00 - 
+Version 1.02.06 - 
+=============================
+
+Version 1.02.05 - 19 Apr 2006
+=============================
+  Separate install_include target in makefiles.
+  Separate out DEFS from CFLAGS.
+  Support pkg-config.
+  Check for libsepol.
+
+Version 1.02.04 - 14 Apr 2006
+=============================
+  Bring dmsetup man page up-to-date.
+  Use name-based device refs if kernel doesn't support device number refs.
+  Fix memory leak (struct dm_ioctl) when struct dm_task is reused.
+  If _create_and_load_v4 fails part way through, revert the creation.
+  dmeventd thread/fifo fixes.
+  Add file & line to dm_strdup_aux().
+  Add setgeometry.
+
+Version 1.02.03 - 7 Feb 2006
+============================
+  Add exported functions to set uid, gid and mode.
+  Rename _log to dm_log and export.
+  Add dm_tree_skip_lockfs.
+  Fix dm_strdup debug definition.
+  Fix hash function to avoid using a negative array offset.
+  Don't inline _find in hash.c and tidy signed/unsigned etc.
+  Fix libdevmapper.h #endif.
+  Fix dmsetup version driver version.
+  Add sync, nosync and block_on_error mirror log parameters.
+  Add hweight32.
+  Fix dmeventd build.
+
+Version 1.02.02 - 2 Dec 2005
+============================
+  dmeventd added.
+  Export dm_task_update_nodes.
+  Use names instead of numbers in messages when ioctls fail.
+
+Version 1.02.01 - 23 Nov 2005
+=============================
+  Resume snapshot-origins last.
+  Drop leading zeros from dm_format_dev.
+  Suppress attempt to reload identical table.
+  Additional LVM- prefix matching for transitional period.
+
+Version 1.02.00 - 10 Nov 2005
 =============================
   Added activation functions to library.
   Added return macros.

configure

@@ -310,7 +310,7 @@ ac_includes_default="\
 #endif"
 
 ac_default_prefix=/usr
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os AWK CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN_S SET_MAKE RANLIB ac_ct_RANLIB CPP EGREP ALLOCA LIBOBJS POW_LIB MSGFMT MODPROBE_CMD JOBS STATIC_LINK LVM1 POOL SNAPSHOTS MIRRORS OWNER GROUP COPTIMISE_FLAG CLDFLAGS CLDWHOLEARCHIVE CLDNOWHOLEARCHIVE LDDEPS SOFLAG LVM_VERSION LVM1_FALLBACK DEBUG DEVMAPPER HAVE_LIBDL HAVE_SELINUX CMDLIB LOCALEDIR CONFDIR STATICDIR INTL_PACKAGE INTL CLVMD CLUSTER FSADM LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os AWK CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN_S SET_MAKE RANLIB ac_ct_RANLIB CFLOW_CMD CSCOPE_CMD CPP EGREP ALLOCA LIBOBJS POW_LIB MSGFMT MODPROBE_CMD JOBS STATIC_LINK LVM1 POOL SNAPSHOTS MIRRORS OWNER GROUP LVM_DEFS COPTIMISE_FLAG CLDFLAGS CLDWHOLEARCHIVE CLDNOWHOLEARCHIVE LDDEPS LIB_SUFFIX LVM_VERSION LVM1_FALLBACK DEBUG DEVMAPPER HAVE_LIBDL HAVE_SELINUX CMDLIB LOCALEDIR CONFDIR STATICDIR INTL_PACKAGE INTL CLVMD CLUSTER FSADM DMEVENTD LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -858,6 +858,7 @@ Optional Features:
   --disable-o_direct      Disable O_DIRECT
   --enable-cmdlib         Build shared command library
   --enable-fsadm          Enable fsadm
+  --enable-dmeventd       Enable the device-mapper event daemon
   --enable-nls            Enable Native Language Support
 
 Optional Packages:
@@ -1450,7 +1451,7 @@ case "$host_os" in
 		CLDNOWHOLEARCHIVE="-Wl,-no-whole-archive"
 		LDDEPS="$LDDEPS .export.sym"
 		LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
-		SOFLAG="-shared"
+		LIB_SUFFIX="so"
 		DEVMAPPER=yes
 		ODIRECT=yes
 		SELINUX=yes
@@ -1464,7 +1465,7 @@ case "$host_os" in
 		CLDNOWHOLEARCHIVE=
 		LDDEPS="$LDDEPS"
 		LDFLAGS="$LDFLAGS"
-		SOFLAG="-dynamiclib"
+		LIB_SUFFIX="dylib"
 		DEVMAPPER=yes
 		ODIRECT=no
 		SELINUX=no
@@ -2642,6 +2643,84 @@ else
   RANLIB="$ac_cv_prog_RANLIB"
 fi
 
+# Extract the first word of "cflow", so it can be a program name with args.
+set dummy cflow; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_path_CFLOW_CMD+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  case $CFLOW_CMD in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_CFLOW_CMD="$CFLOW_CMD" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_CFLOW_CMD="$as_dir/$ac_word$ac_exec_ext"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+  ;;
+esac
+fi
+CFLOW_CMD=$ac_cv_path_CFLOW_CMD
+
+if test -n "$CFLOW_CMD"; then
+  echo "$as_me:$LINENO: result: $CFLOW_CMD" >&5
+echo "${ECHO_T}$CFLOW_CMD" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+# Extract the first word of "cscope", so it can be a program name with args.
+set dummy cscope; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_path_CSCOPE_CMD+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  case $CSCOPE_CMD in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_CSCOPE_CMD="$CSCOPE_CMD" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_CSCOPE_CMD="$as_dir/$ac_word$ac_exec_ext"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+  ;;
+esac
+fi
+CSCOPE_CMD=$ac_cv_path_CSCOPE_CMD
+
+if test -n "$CSCOPE_CMD"; then
+  echo "$as_me:$LINENO: result: $CSCOPE_CMD" >&5
+echo "${ECHO_T}$CSCOPE_CMD" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
 
 ################################################################################
 
@@ -7148,7 +7227,7 @@ echo "$as_me:$LINENO: result: $LVM1_FALLBACK" >&5
 echo "${ECHO_T}$LVM1_FALLBACK" >&6
 
 if test x$LVM1_FALLBACK = xyes; then
-	CFLAGS="$CFLAGS -DLVM1_FALLBACK"
+	LVM_DEFS="$LVM_DEFS -DLVM1_FALLBACK"
 fi
 
 ################################################################################
@@ -7174,7 +7253,7 @@ echo "$as_me: error: --with-lvm1 parameter invalid
 fi;
 
 if test x$LVM1 = xinternal; then
-	CFLAGS="$CFLAGS -DLVM1_INTERNAL"
+	LVM_DEFS="$LVM_DEFS -DLVM1_INTERNAL"
 fi
 
 ################################################################################
@@ -7200,7 +7279,7 @@ echo "$as_me: error: --with-pool parameter invalid
 fi;
 
 if test x$POOL = xinternal; then
-	CFLAGS="$CFLAGS -DPOOL_INTERNAL"
+	LVM_DEFS="$LVM_DEFS -DPOOL_INTERNAL"
 fi
 
 ################################################################################
@@ -7224,7 +7303,7 @@ echo "$as_me: error: --with-cluster parameter invalid
 fi;
 
 if test x$CLUSTER = xinternal; then
-	CFLAGS="$CFLAGS -DCLUSTER_LOCKING_INTERNAL"
+	LVM_DEFS="$LVM_DEFS -DCLUSTER_LOCKING_INTERNAL"
 fi
 
 ################################################################################
@@ -7250,7 +7329,7 @@ echo "$as_me: error: --with-snapshots parameter invalid
 fi;
 
 if test x$SNAPSHOTS = xinternal; then
-	CFLAGS="$CFLAGS -DSNAPSHOT_INTERNAL"
+	LVM_DEFS="$LVM_DEFS -DSNAPSHOT_INTERNAL"
 fi
 
 ################################################################################
@@ -7276,7 +7355,7 @@ echo "$as_me: error: --with-mirrors parameter invalid
 fi;
 
 if test x$MIRRORS = xinternal; then
-	CFLAGS="$CFLAGS -DMIRRORED_INTERNAL"
+	LVM_DEFS="$LVM_DEFS -DMIRRORED_INTERNAL"
 fi
 
 ################################################################################
@@ -7306,7 +7385,7 @@ echo "$as_me:$LINENO: result: $READLINE" >&5
 echo "${ECHO_T}$READLINE" >&6
 
 if test x$READLINE = xyes; then
-	CFLAGS="$CFLAGS -DREADLINE_SUPPORT"
+	LVM_DEFS="$LVM_DEFS -DREADLINE_SUPPORT"
 fi
 
 ################################################################################
@@ -7356,6 +7435,8 @@ echo "${ECHO_T}$DEBUG" >&6
 
 if test x$DEBUG = xyes; then
 	COPTIMISE_FLAG=
+else
+	CSCOPE_CMD=
 fi
 
 ################################################################################
@@ -7382,7 +7463,7 @@ echo "$as_me:$LINENO: result: $DEVMAPPER" >&5
 echo "${ECHO_T}$DEVMAPPER" >&6
 
 if test x$DEVMAPPER = xyes; then
-	CFLAGS="$CFLAGS -DDEVMAPPER_SUPPORT"
+	LVM_DEFS="$LVM_DEFS -DDEVMAPPER_SUPPORT"
 fi
 
 ################################################################################
@@ -7397,7 +7478,7 @@ echo "$as_me:$LINENO: result: $ODIRECT" >&5
 echo "${ECHO_T}$ODIRECT" >&6
 
 if test x$ODIRECT = xyes; then
-	CFLAGS="$CFLAGS -DO_DIRECT_SUPPORT"
+	LVM_DEFS="$LVM_DEFS -DO_DIRECT_SUPPORT"
 fi
 
 ################################################################################
@@ -7414,7 +7495,7 @@ echo "$as_me:$LINENO: result: $CMDLIB" >&5
 echo "${ECHO_T}$CMDLIB" >&6
 
 if test x$CMDLIB = xyes; then
-	CFLAGS="$CFLAGS -DCMDLIB"
+	LVM_DEFS="$LVM_DEFS -DCMDLIB"
 fi
 
 ################################################################################
@@ -7428,6 +7509,28 @@ fi;
 echo "$as_me:$LINENO: result: $FSADM" >&5
 echo "${ECHO_T}$FSADM" >&6
 
+################################################################################
+echo "$as_me:$LINENO: checking whether to use dmeventd" >&5
+echo $ECHO_N "checking whether to use dmeventd... $ECHO_C" >&6
+# Check whether --enable-dmeventd or --disable-dmeventd was given.
+if test "${enable_dmeventd+set}" = set; then
+  enableval="$enable_dmeventd"
+  DMEVENTD=$enableval
+fi;
+echo "$as_me:$LINENO: result: $DMEVENTD" >&5
+echo "${ECHO_T}$DMEVENTD" >&6
+
+if test x$DMEVENTD = xyes && test x$MIRRORS != xinternal; then
+{ { echo "$as_me:$LINENO: error: --enable-dmeventd currently requires --with-mirrors=internal
+" >&5
+echo "$as_me: error: --enable-dmeventd currently requires --with-mirrors=internal
+" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+if test x$DMEVENTD = xyes; then
+	LVM_DEFS="$LVM_DEFS -DDMEVENTD"
+fi
 ################################################################################
 if [ "x$exec_prefix" = xNONE -a "x$prefix" = xNONE ];
  then  exec_prefix="";
@@ -8087,7 +8190,7 @@ fi
 
 
 if [ "x$HAVE_LIBDL" = xyes ]; then
-	CFLAGS="$CFLAGS -DHAVE_LIBDL"
+	LVM_DEFS="$LVM_DEFS -DHAVE_LIBDL"
 	LIBS="-ldl $LIBS"
 else
 	HAVE_LIBDL=no
@@ -8106,6 +8209,85 @@ fi
 
 ################################################################################
 if test x$SELINUX = xyes; then
+	echo "$as_me:$LINENO: checking for sepol_check_context function" >&5
+echo $ECHO_N "checking for sepol_check_context function... $ECHO_C" >&6
+	echo "$as_me:$LINENO: checking for sepol_check_context in -lsepol" >&5
+echo $ECHO_N "checking for sepol_check_context in -lsepol... $ECHO_C" >&6
+if test "${ac_cv_lib_sepol_sepol_check_context+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsepol  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char sepol_check_context ();
+int
+main ()
+{
+sepol_check_context ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_sepol_sepol_check_context=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_sepol_sepol_check_context=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_sepol_sepol_check_context" >&5
+echo "${ECHO_T}$ac_cv_lib_sepol_sepol_check_context" >&6
+if test $ac_cv_lib_sepol_sepol_check_context = yes; then
+  HAVE_SEPOL=yes
+else
+  HAVE_SEPOL=no
+fi
+
+	echo "$as_me:$LINENO: result: $HAVE_SEPOL" >&5
+echo "${ECHO_T}$HAVE_SEPOL" >&6
+
+	if test x$HAVE_SEPOL = xyes; then
+		LIBS="-lsepol $LIBS"
+	fi
+
 	echo "$as_me:$LINENO: checking for is_selinux_enabled function" >&5
 echo $ECHO_N "checking for is_selinux_enabled function... $ECHO_C" >&6
 	echo "$as_me:$LINENO: checking for is_selinux_enabled in -lselinux" >&5
@@ -8182,7 +8364,7 @@ fi
 echo "${ECHO_T}$HAVE_SELINUX" >&6
 
 	if test x$HAVE_SELINUX = xyes; then
-		CFLAGS="$CFLAGS -DHAVE_SELINUX"
+		LVM_DEFS="$LVM_DEFS -DHAVE_SELINUX"
 		LIBS="-lselinux $LIBS"
 	else
 		{ echo "$as_me:$LINENO: WARNING: Disabling selinux" >&5
@@ -8336,7 +8518,7 @@ if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
- CFLAGS="$CFLAGS -DHAVE_GETOPTLONG"
+ LVM_DEFS="$LVM_DEFS -DHAVE_GETOPTLONG"
 fi
 
 done
@@ -8526,7 +8708,7 @@ fi
 echo "$as_me:$LINENO: result: $ac_cv_func_rl_completion_matches" >&5
 echo "${ECHO_T}$ac_cv_func_rl_completion_matches" >&6
 if test $ac_cv_func_rl_completion_matches = yes; then
-  CFLAGS="$CFLAGS -DHAVE_RL_COMPLETION_MATCHES"
+  LVM_DEFS="$LVM_DEFS -DHAVE_RL_COMPLETION_MATCHES"
 fi
 
 
@@ -10810,7 +10992,7 @@ fi
 
 
 if test x$MODPROBE_CMD != x; then
-	CFLAGS="$CFLAGS -DMODPROBE_CMD=\\\"$MODPROBE_CMD\\\""
+	LVM_DEFS="$LVM_DEFS -DMODPROBE_CMD=\\\"$MODPROBE_CMD\\\""
 fi
 
 ################################################################################
@@ -10850,13 +11032,17 @@ fi
 
 
 
+
+
+
+
 
 
 
 
 
 ################################################################################
-                                                                                                                                                                                                                            ac_config_files="$ac_config_files Makefile make.tmpl daemons/Makefile daemons/clvmd/Makefile doc/Makefile include/Makefile lib/Makefile lib/format1/Makefile lib/format_pool/Makefile lib/locking/Makefile lib/mirror/Makefile lib/snapshot/Makefile man/Makefile po/Makefile tools/Makefile tools/version.h tools/fsadm/Makefile test/mm/Makefile test/device/Makefile test/format1/Makefile test/regex/Makefile test/filters/Makefile"
+                                                                                                                                                                                                                                                ac_config_files="$ac_config_files Makefile make.tmpl daemons/Makefile daemons/clvmd/Makefile dmeventd/Makefile dmeventd/mirror/Makefile doc/Makefile include/Makefile lib/Makefile lib/format1/Makefile lib/format_pool/Makefile lib/locking/Makefile lib/mirror/Makefile lib/snapshot/Makefile man/Makefile po/Makefile tools/Makefile tools/version.h tools/fsadm/Makefile test/mm/Makefile test/device/Makefile test/format1/Makefile test/regex/Makefile test/filters/Makefile"
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
 # tests run on this system so they can be shared between configure
@@ -11412,6 +11598,8 @@ do
   "make.tmpl" ) CONFIG_FILES="$CONFIG_FILES make.tmpl" ;;
   "daemons/Makefile" ) CONFIG_FILES="$CONFIG_FILES daemons/Makefile" ;;
   "daemons/clvmd/Makefile" ) CONFIG_FILES="$CONFIG_FILES daemons/clvmd/Makefile" ;;
+  "dmeventd/Makefile" ) CONFIG_FILES="$CONFIG_FILES dmeventd/Makefile" ;;
+  "dmeventd/mirror/Makefile" ) CONFIG_FILES="$CONFIG_FILES dmeventd/mirror/Makefile" ;;
   "doc/Makefile" ) CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
   "include/Makefile" ) CONFIG_FILES="$CONFIG_FILES include/Makefile" ;;
   "lib/Makefile" ) CONFIG_FILES="$CONFIG_FILES lib/Makefile" ;;
@@ -11540,6 +11728,8 @@ s,@LN_S@,$LN_S,;t t
 s,@SET_MAKE@,$SET_MAKE,;t t
 s,@RANLIB@,$RANLIB,;t t
 s,@ac_ct_RANLIB@,$ac_ct_RANLIB,;t t
+s,@CFLOW_CMD@,$CFLOW_CMD,;t t
+s,@CSCOPE_CMD@,$CSCOPE_CMD,;t t
 s,@CPP@,$CPP,;t t
 s,@EGREP@,$EGREP,;t t
 s,@ALLOCA@,$ALLOCA,;t t
@@ -11555,12 +11745,13 @@ s,@SNAPSHOTS@,$SNAPSHOTS,;t t
 s,@MIRRORS@,$MIRRORS,;t t
 s,@OWNER@,$OWNER,;t t
 s,@GROUP@,$GROUP,;t t
+s,@LVM_DEFS@,$LVM_DEFS,;t t
 s,@COPTIMISE_FLAG@,$COPTIMISE_FLAG,;t t
 s,@CLDFLAGS@,$CLDFLAGS,;t t
 s,@CLDWHOLEARCHIVE@,$CLDWHOLEARCHIVE,;t t
 s,@CLDNOWHOLEARCHIVE@,$CLDNOWHOLEARCHIVE,;t t
 s,@LDDEPS@,$LDDEPS,;t t
-s,@SOFLAG@,$SOFLAG,;t t
+s,@LIB_SUFFIX@,$LIB_SUFFIX,;t t
 s,@LVM_VERSION@,$LVM_VERSION,;t t
 s,@LVM1_FALLBACK@,$LVM1_FALLBACK,;t t
 s,@DEBUG@,$DEBUG,;t t
@@ -11576,6 +11767,7 @@ s,@INTL@,$INTL,;t t
 s,@CLVMD@,$CLVMD,;t t
 s,@CLUSTER@,$CLUSTER,;t t
 s,@FSADM@,$FSADM,;t t
+s,@DMEVENTD@,$DMEVENTD,;t t
 s,@LTLIBOBJS@,$LTLIBOBJS,;t t
 CEOF
 
@@ -11855,3 +12047,8 @@ if test x$FSADM == xyes; then
   { echo "$as_me:$LINENO: WARNING: fsadm support is untested" >&5
 echo "$as_me: WARNING: fsadm support is untested" >&2;}
 fi
+
+if test x$DMEVENTD == xyes; then
+  { echo "$as_me:$LINENO: WARNING: dmeventd support is untested" >&5
+echo "$as_me: WARNING: dmeventd support is untested" >&2;}
+fi

configure.in

@@ -35,7 +35,7 @@ case "$host_os" in
 		CLDNOWHOLEARCHIVE="-Wl,-no-whole-archive"
 		LDDEPS="$LDDEPS .export.sym"
 		LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
-		SOFLAG="-shared"
+		LIB_SUFFIX="so"
 		DEVMAPPER=yes
 		ODIRECT=yes
 		SELINUX=yes
@@ -49,7 +49,7 @@ case "$host_os" in
 		CLDNOWHOLEARCHIVE=
 		LDDEPS="$LDDEPS"
 		LDFLAGS="$LDFLAGS"
-		SOFLAG="-dynamiclib"
+		LIB_SUFFIX="dylib"
 		DEVMAPPER=yes
 		ODIRECT=no
 		SELINUX=no
@@ -65,6 +65,8 @@ AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET
 AC_PROG_RANLIB
+AC_PATH_PROG(CFLOW_CMD, cflow)
+AC_PATH_PROG(CSCOPE_CMD, cscope)
 
 ################################################################################
 dnl -- Checks for header files.
@@ -150,7 +152,7 @@ AC_ARG_ENABLE(lvm1_fallback, [  --enable-lvm1_fallback  Use this to fall back an
 AC_MSG_RESULT($LVM1_FALLBACK)
 
 if test x$LVM1_FALLBACK = xyes; then
-	CFLAGS="$CFLAGS -DLVM1_FALLBACK"
+	LVM_DEFS="$LVM_DEFS -DLVM1_FALLBACK"
 fi
 
 ################################################################################
@@ -170,7 +172,7 @@ if [[ "x$LVM1" != xnone -a "x$LVM1" != xinternal -a "x$LVM1" != xshared ]];
 fi;
 
 if test x$LVM1 = xinternal; then
-	CFLAGS="$CFLAGS -DLVM1_INTERNAL"
+	LVM_DEFS="$LVM_DEFS -DLVM1_INTERNAL"
 fi
 
 ################################################################################
@@ -190,7 +192,7 @@ if [[ "x$POOL" != xnone -a "x$POOL" != xinternal -a "x$POOL" != xshared ]];
 fi;
 
 if test x$POOL = xinternal; then
-	CFLAGS="$CFLAGS -DPOOL_INTERNAL"
+	LVM_DEFS="$LVM_DEFS -DPOOL_INTERNAL"
 fi
 
 ################################################################################
@@ -209,7 +211,7 @@ if [[ "x$CLUSTER" != xnone -a "x$CLUSTER" != xinternal -a "x$CLUSTER" != xshared
 fi;
 
 if test x$CLUSTER = xinternal; then
-	CFLAGS="$CFLAGS -DCLUSTER_LOCKING_INTERNAL"
+	LVM_DEFS="$LVM_DEFS -DCLUSTER_LOCKING_INTERNAL"
 fi
 
 ################################################################################
@@ -229,7 +231,7 @@ if [[ "x$SNAPSHOTS" != xnone -a "x$SNAPSHOTS" != xinternal -a "x$SNAPSHOTS" != x
 fi;
 
 if test x$SNAPSHOTS = xinternal; then
-	CFLAGS="$CFLAGS -DSNAPSHOT_INTERNAL"
+	LVM_DEFS="$LVM_DEFS -DSNAPSHOT_INTERNAL"
 fi
 
 ################################################################################
@@ -249,7 +251,7 @@ if [[ "x$MIRRORS" != xnone -a "x$MIRRORS" != xinternal -a "x$MIRRORS" != xshared
 fi;
 
 if test x$MIRRORS = xinternal; then
-	CFLAGS="$CFLAGS -DMIRRORED_INTERNAL"
+	LVM_DEFS="$LVM_DEFS -DMIRRORED_INTERNAL"
 fi
 
 ################################################################################
@@ -267,7 +269,7 @@ READLINE=$enableval, READLINE=no)
 AC_MSG_RESULT($READLINE)
 
 if test x$READLINE = xyes; then
-	CFLAGS="$CFLAGS -DREADLINE_SUPPORT"
+	LVM_DEFS="$LVM_DEFS -DREADLINE_SUPPORT"
 fi
 
 ################################################################################
@@ -305,6 +307,8 @@ AC_MSG_RESULT($DEBUG)
 dnl -- Normally turn off optimisation for debug builds
 if test x$DEBUG = xyes; then
 	COPTIMISE_FLAG=
+else
+	CSCOPE_CMD=
 fi
 
 ################################################################################
@@ -323,7 +327,7 @@ DEVMAPPER=$enableval)
 AC_MSG_RESULT($DEVMAPPER)
 
 if test x$DEVMAPPER = xyes; then
-	CFLAGS="$CFLAGS -DDEVMAPPER_SUPPORT"
+	LVM_DEFS="$LVM_DEFS -DDEVMAPPER_SUPPORT"
 fi
 
 ################################################################################
@@ -334,7 +338,7 @@ ODIRECT=$enableval)
 AC_MSG_RESULT($ODIRECT)
 
 if test x$ODIRECT = xyes; then
-	CFLAGS="$CFLAGS -DO_DIRECT_SUPPORT"
+	LVM_DEFS="$LVM_DEFS -DO_DIRECT_SUPPORT"
 fi
 
 ################################################################################
@@ -345,7 +349,7 @@ CMDLIB=$enableval, CMDLIB=no)
 AC_MSG_RESULT($CMDLIB)
 
 if test x$CMDLIB = xyes; then
-	CFLAGS="$CFLAGS -DCMDLIB"
+	LVM_DEFS="$LVM_DEFS -DCMDLIB"
 fi
 
 ################################################################################
@@ -355,6 +359,23 @@ AC_ARG_ENABLE(fsadm, [  --enable-fsadm          Enable fsadm],
 FSADM=$enableval)
 AC_MSG_RESULT($FSADM)
 
+################################################################################
+dnl -- enable dmeventd handling
+AC_MSG_CHECKING(whether to use dmeventd)
+AC_ARG_ENABLE(dmeventd, [  --enable-dmeventd       Enable the device-mapper event daemon],
+DMEVENTD=$enableval)
+AC_MSG_RESULT($DMEVENTD)
+
+dnl -- dmeventd currently requires internal mirror support
+if test x$DMEVENTD = xyes && test x$MIRRORS != xinternal; then
+AC_MSG_ERROR(
+--enable-dmeventd currently requires --with-mirrors=internal
+)
+fi
+
+if test x$DMEVENTD = xyes; then
+	LVM_DEFS="$LVM_DEFS -DDMEVENTD"
+fi
 ################################################################################
 dnl -- Mess with default exec_prefix
 if [[ "x$exec_prefix" = xNONE -a "x$prefix" = xNONE ]];
@@ -390,7 +411,7 @@ dnl -- Check for dlopen
 AC_CHECK_LIB(dl, dlopen, HAVE_LIBDL=yes, HAVE_LIBDL=no)
 
 if [[ "x$HAVE_LIBDL" = xyes ]]; then
-	CFLAGS="$CFLAGS -DHAVE_LIBDL"
+	LVM_DEFS="$LVM_DEFS -DHAVE_LIBDL"
 	LIBS="-ldl $LIBS"
 else
 	HAVE_LIBDL=no
@@ -407,14 +428,22 @@ Features cannot be 'shared' when building statically
 fi
 
 ################################################################################
-dnl -- Check for is_selinux_enabled
+dnl -- Check for selinux
 if test x$SELINUX = xyes; then
+	AC_MSG_CHECKING(for sepol_check_context function)
+	AC_CHECK_LIB(sepol, sepol_check_context, HAVE_SEPOL=yes, HAVE_SEPOL=no)
+	AC_MSG_RESULT($HAVE_SEPOL)
+
+	if test x$HAVE_SEPOL = xyes; then
+		LIBS="-lsepol $LIBS"
+	fi
+
 	AC_MSG_CHECKING(for is_selinux_enabled function)
 	AC_CHECK_LIB(selinux, is_selinux_enabled, HAVE_SELINUX=yes, HAVE_SELINUX=no)
 	AC_MSG_RESULT($HAVE_SELINUX)
 
 	if test x$HAVE_SELINUX = xyes; then
-		CFLAGS="$CFLAGS -DHAVE_SELINUX"
+		LVM_DEFS="$LVM_DEFS -DHAVE_SELINUX"
 		LIBS="-lselinux $LIBS"
 	else
 		AC_MSG_WARN(Disabling selinux)
@@ -423,7 +452,7 @@ fi
 
 ################################################################################
 dnl -- Check for getopt
-AC_CHECK_HEADERS(getopt.h, CFLAGS="$CFLAGS -DHAVE_GETOPTLONG")
+AC_CHECK_HEADERS(getopt.h, LVM_DEFS="$LVM_DEFS -DHAVE_GETOPTLONG")
 
 ################################################################################
 dnl -- Check for readline (Shamelessly copied from parted 1.4.17)
@@ -438,7 +467,7 @@ Note: if you are using precompiled packages you will also need the development
 package as well (which may be called readline-devel or something similar).
 )
 	)
-	AC_CHECK_FUNC(rl_completion_matches, CFLAGS="$CFLAGS -DHAVE_RL_COMPLETION_MATCHES")
+	AC_CHECK_FUNC(rl_completion_matches, LVM_DEFS="$LVM_DEFS -DHAVE_RL_COMPLETION_MATCHES")
 		
 fi
 
@@ -519,7 +548,7 @@ fi
 AC_PATH_PROG(MODPROBE_CMD, modprobe)
 
 if test x$MODPROBE_CMD != x; then
-	CFLAGS="$CFLAGS -DMODPROBE_CMD=\\\"$MODPROBE_CMD\\\""
+	LVM_DEFS="$LVM_DEFS -DMODPROBE_CMD=\\\"$MODPROBE_CMD\\\""
 fi
 
 ################################################################################
@@ -539,13 +568,14 @@ AC_SUBST(MIRRORS)
 AC_SUBST(OWNER)
 AC_SUBST(GROUP)
 AC_SUBST(CFLAGS)
+AC_SUBST(LVM_DEFS)
 AC_SUBST(COPTIMISE_FLAG)
 AC_SUBST(CLDFLAGS)
 AC_SUBST(CLDWHOLEARCHIVE)
 AC_SUBST(CLDNOWHOLEARCHIVE)
 AC_SUBST(LDDEPS)
 AC_SUBST(LDFLAGS)
-AC_SUBST(SOFLAG)
+AC_SUBST(LIB_SUFFIX)
 AC_SUBST(LIBS)
 AC_SUBST(LVM_VERSION)
 AC_SUBST(LVM1_FALLBACK)
@@ -563,6 +593,9 @@ AC_SUBST(INTL)
 AC_SUBST(CLVMD)
 AC_SUBST(CLUSTER)
 AC_SUBST(FSADM)
+AC_SUBST(DMEVENTD)
+AC_SUBST(CFLOW_CMD)
+AC_SUBST(CSCOPE_CMD)
 
 ################################################################################
 dnl -- First and last lines should not contain files to generate in order to 
@@ -572,6 +605,8 @@ Makefile								\
 make.tmpl								\
 daemons/Makefile							\
 daemons/clvmd/Makefile							\
+dmeventd/Makefile							\
+dmeventd/mirror/Makefile						\
 doc/Makefile								\
 include/Makefile						 	\
 lib/Makefile							 	\
@@ -599,3 +634,7 @@ fi
 if test x$FSADM == xyes; then
   AC_MSG_WARN(fsadm support is untested)
 fi
+
+if test x$DMEVENTD == xyes; then
+  AC_MSG_WARN(dmeventd support is untested)
+fi

daemons/clvmd/Makefile.in

@@ -35,28 +35,38 @@ ifeq ("@CLVMD@", "all")
 endif
 
 ifeq ("@DEBUG@", "yes")
-	CFLAGS += -DDEBUG
+	DEFS += -DDEBUG
 endif
 
 ifeq ("$(GULM)", "yes")
 	SOURCES += clvmd-gulm.c tcp-comms.c
 	LMLIBS += -lccs -lgulm
-	CFLAGS += -DUSE_GULM
+	DEFS += -DUSE_GULM
 endif
 
 ifeq ("$(CMAN)", "yes")
 	SOURCES += clvmd-cman.c
-	LMLIBS += -ldlm
-	CFLAGS += -DUSE_CMAN
+	LMLIBS += -ldlm -lcman
+	DEFS += -DUSE_CMAN
 endif
 
 TARGETS = \
 	clvmd
 
-include $(top_srcdir)/make.tmpl
+LVMLIBS = -llvm -lpthread
 
-CFLAGS += -D_REENTRANT -fno-strict-aliasing
-LIBS += -ldevmapper -llvm -lpthread
+ifeq ("@DMEVENTD@", "yes")
+	LVMLIBS += -ldevmapper-event
+endif
+ 
+ifeq ("@DEVMAPPER@", "yes")
+	LVMLIBS += -ldevmapper
+endif
+
+DEFS += -D_REENTRANT
+CFLAGS += -fno-strict-aliasing
+
+include $(top_srcdir)/make.tmpl
 
 INSTALL_TARGETS = \
 	install_clvmd

daemons/clvmd/clvmd-cman.c

@@ -46,19 +46,23 @@
 
 #define LOCKSPACE_NAME "clvmd"
 
-static int cluster_sock;
 static int num_nodes;
-static struct cl_cluster_node *nodes = NULL;
+static struct cman_node *nodes = NULL;
+static struct cman_node this_node;
 static int count_nodes; /* size of allocated nodes array */
 static int max_updown_nodes = 50;	/* Current size of the allocated array */
 /* Node up/down status, indexed by nodeid */
 static int *node_updown = NULL;
 static dlm_lshandle_t *lockspace;
+static cman_handle_t c_handle;
 
 static void count_clvmds_running(void);
 static void get_members(void);
 static int nodeid_from_csid(char *csid);
 static int name_from_nodeid(int nodeid, char *name);
+static void event_callback(cman_handle_t handle, void *private, int reason, int arg);
+static void data_callback(cman_handle_t handle, void *private,
+			  char *buf, int len, uint8_t port, int nodeid);
 
 struct lock_wait {
 	pthread_cond_t cond;
@@ -68,30 +72,23 @@ struct lock_wait {
 
 static int _init_cluster(void)
 {
-	struct sockaddr_cl saddr;
-	int port = CLUSTER_PORT_CLVMD;
-
 	/* Open the cluster communication socket */
-	cluster_sock = socket(AF_CLUSTER, SOCK_DGRAM, CLPROTO_CLIENT);
-	if (cluster_sock == -1) {
-		/* Don't print an error here because we could be just probing for CMAN */
+	c_handle = cman_init(NULL);
+	if (!c_handle) {
+		syslog(LOG_ERR, "Can't open cluster manager socket: %m");
 		return -1;
 	}
-	/* Set Close-on-exec */
-	fcntl(cluster_sock, F_SETFD, 1);
 
-	/* Bind to our port number on the cluster.
-	   Writes to this will block if the cluster loses quorum */
-	saddr.scl_family = AF_CLUSTER;
-	saddr.scl_port = port;
-
-	if (bind
-	    (cluster_sock, (struct sockaddr *) &saddr,
-	     sizeof(struct sockaddr_cl))) {
+	if (cman_start_recv_data(c_handle, data_callback, CLUSTER_PORT_CLVMD)) {
 		syslog(LOG_ERR, "Can't bind cluster socket: %m");
 		return -1;
 	}
 
+	if (cman_start_notification(c_handle, event_callback)) {
+		syslog(LOG_ERR, "Can't start cluster event listening");
+		return -1;
+	}
+
 	/* Get the cluster members list */
 	get_members();
 	count_clvmds_running();
@@ -114,63 +111,46 @@ static void _cluster_init_completed(void)
 
 static int _get_main_cluster_fd()
 {
-	return cluster_sock;
+	return cman_get_fd(c_handle);
 }
 
 static int _get_num_nodes()
 {
-	return num_nodes;
+	int i;
+	int nnodes = 0;
+
+	/* return number of ACTIVE nodes */
+	for (i=0; i<num_nodes; i++) {
+		if (nodes[i].cn_member)
+			nnodes++;
+	}
+	return nnodes;
 }
 
 /* send_message with the fd check removed */
 static int _cluster_send_message(void *buf, int msglen, char *csid, const char *errtext)
 {
-	struct iovec iov[2];
-	struct msghdr msg;
-	struct sockaddr_cl saddr;
-	int len = 0;
+	int nodeid = 0;
 
-	msg.msg_control = NULL;
-	msg.msg_controllen = 0;
-	msg.msg_iovlen = 1;
-	msg.msg_iov = iov;
-	msg.msg_flags = 0;
-	iov[0].iov_len = msglen;
-	iov[0].iov_base = buf;
+	if (csid)
+		memcpy(&nodeid, csid, CMAN_MAX_CSID_LEN);
 
-	saddr.scl_family = AF_CLUSTER;
-	saddr.scl_port = CLUSTER_PORT_CLVMD;
-	if (csid) {
-		msg.msg_name = &saddr;
-		msg.msg_namelen = sizeof(saddr);
-		memcpy(&saddr.scl_nodeid, csid, CMAN_MAX_CSID_LEN);
-	} else {		/* Cluster broadcast */
-
-		msg.msg_name = NULL;
-		msg.msg_namelen = 0;
-	}
-
-	do {
-		len = sendmsg(cluster_sock, &msg, 0);
-		if (len < 0 && errno != EAGAIN)
+	if (cman_send_data(c_handle, buf, msglen, 0, CLUSTER_PORT_CLVMD, nodeid) <= 0)
+	{
 			log_error(errtext);
-
-	} while (len == -1 && errno == EAGAIN);
-	return len;
+	}
+	return msglen;
 }
 
 static void _get_our_csid(char *csid)
 {
-	int i;
-	memset(csid, 0, CMAN_MAX_CSID_LEN);
-
-	for (i = 0; i < num_nodes; i++) {
-		if (nodes[i].us)
-			memcpy(csid, &nodes[i].node_id, CMAN_MAX_CSID_LEN);
+	if (this_node.cn_nodeid == 0) {
+		cman_get_node(c_handle, 0, &this_node);
 	}
+	memcpy(csid, &this_node.cn_nodeid, CMAN_MAX_CSID_LEN);
 }
 
-/* Call a callback routine for each node that known (down mean not running a clvmd) */
+/* Call a callback routine for each node is that known (down means not running a clvmd) */
 static int _cluster_do_node_callback(struct local_client *client,
 			     void (*callback) (struct local_client *, char *,
 					       int))
@@ -179,8 +159,8 @@ static int _cluster_do_node_callback(struct local_client *client,
 	int somedown = 0;
 
 	for (i = 0; i < _get_num_nodes(); i++) {
-		callback(client, (char *)&nodes[i].node_id, node_updown[nodes[i].node_id]);
-		if (!node_updown[nodes[i].node_id])
+		callback(client, (char *)&nodes[i].cn_nodeid, node_updown[nodes[i].cn_nodeid]);
+		if (!node_updown[nodes[i].cn_nodeid])
 			somedown = -1;
 	}
 	return somedown;
@@ -188,78 +168,63 @@ static int _cluster_do_node_callback(struct local_client *client,
 
 /* Process OOB message from the cluster socket,
    this currently just means that a node has stopped listening on our port */
-static void process_oob_msg(char *buf, int len, int nodeid)
+static void event_callback(cman_handle_t handle, void *private, int reason, int arg)
 {
-	char namebuf[256];
-	switch (buf[0]) {
-        case CLUSTER_OOB_MSG_PORTCLOSED:
-		name_from_nodeid(nodeid, namebuf);
-		log_notice("clvmd on node %s has died\n", namebuf);
-		DEBUGLOG("Got OOB message, removing node %s\n", namebuf);
+	char namebuf[MAX_CLUSTER_NAME_LEN];
 
-		node_updown[nodeid] = 0;
+	switch (reason) {
+        case CMAN_REASON_PORTCLOSED:
+		name_from_nodeid(arg, namebuf);
+		log_notice("clvmd on node %s has died\n", namebuf);
+		DEBUGLOG("Got port closed message, removing node %s\n", namebuf);
+
+		node_updown[arg] = 0;
 		break;
 
-	case CLUSTER_OOB_MSG_STATECHANGE:
-		DEBUGLOG("Got OOB message, Cluster state change\n");
+	case CMAN_REASON_STATECHANGE:
+		DEBUGLOG("Got state change message, re-reading members list\n");
 		get_members();
 		break;
+
+#if defined(LIBCMAN_VERSION) && LIBCMAN_VERSION >= 2
+	case CMAN_REASON_PORTOPENED:
+		/* Ignore this, wait for startup message from clvmd itself */
+		break;
+
+	case CMAN_REASON_TRY_SHUTDOWN:
+		DEBUGLOG("Got try shutdown, sending OK\n");
+		cman_replyto_shutdown(c_handle, 1);
+		break;
+#endif
 	default:
 		/* ERROR */
-		DEBUGLOG("Got unknown OOB message: %d\n", buf[0]);
+		DEBUGLOG("Got unknown event callback message: %d\n", reason);
+		break;
 	}
 }
 
-static int _cluster_fd_callback(struct local_client *client, char *buf, int len, char *csid,
+static struct local_client *cman_client;
+static int _cluster_fd_callback(struct local_client *fd, char *buf, int len, char *csid,
 			struct local_client **new_client)
 {
-	struct iovec iov[2];
-	struct msghdr msg;
-	struct sockaddr_cl saddr;
+
+	/* Save this for data_callback */
+	cman_client = fd;
 
 	/* We never return a new client */
 	*new_client = NULL;
 
-	msg.msg_control = NULL;
-	msg.msg_controllen = 0;
-	msg.msg_iovlen = 1;
-	msg.msg_iov = iov;
-	msg.msg_name = &saddr;
-	msg.msg_flags = 0;
-	msg.msg_namelen = sizeof(saddr);
-	iov[0].iov_len = len;
-	iov[0].iov_base = buf;
+	return cman_dispatch(c_handle, 0);
+}
 
-	len = recvmsg(cluster_sock, &msg, MSG_OOB | O_NONBLOCK);
-	if (len < 0 && errno == EAGAIN)
-		return len;
 
-	DEBUGLOG("Read on cluster socket, len = %d\n", len);
-
-	/* A real error */
-	if (len < 0) {
-		log_error("read error on cluster socket: %m");
-		return 0;
-	}
-
-	/* EOF - we have left the cluster */
-	if (len == 0)
-		return 0;
-
-	/* Is it OOB? probably a node gone down */
-	if (msg.msg_flags & MSG_OOB) {
-		process_oob_msg(iov[0].iov_base, len, saddr.scl_nodeid);
-
-		/* Tell the upper layer to ignore this message */
-		len = -1;
-		errno = EAGAIN;
-	}
-	else {
-		memcpy(csid, &saddr.scl_nodeid, sizeof(saddr.scl_nodeid));
-		/* Send it back to clvmd */
-		process_message(client, buf, len, csid);
-	}
-	return len;
+static void data_callback(cman_handle_t handle, void *private,
+			  char *buf, int len, uint8_t port, int nodeid)
+{
+	/* Ignore looped back messages */
+	if (nodeid == this_node.cn_nodeid)
+		return;
+	process_message(cman_client, buf, len, (char *)&nodeid);
 }
 
 static void _add_up_node(char *csid)
@@ -290,19 +255,15 @@ static void _cluster_closedown()
 {
 	unlock_all();
 	dlm_release_lockspace(LOCKSPACE_NAME, lockspace, 1);
-	close(cluster_sock);
+	cman_finish(c_handle);
 }
 
 static int is_listening(int nodeid)
 {
-	struct cl_listen_request rq;
 	int status;
 
-	rq.port = CLUSTER_PORT_CLVMD;
-	rq.nodeid = nodeid;
-
 	do {
-		status = ioctl(cluster_sock, SIOCCLUSTER_ISLISTENING, &rq);
+		status = cman_is_listening(c_handle, nodeid, CLUSTER_PORT_CLVMD);
 		if (status < 0 && errno == EBUSY) {	/* Don't busywait */
 			sleep(1);
 			errno = EBUSY;	/* In case sleep trashes it */
@@ -320,19 +281,22 @@ static void count_clvmds_running(void)
 	int i;
 
 	for (i = 0; i < num_nodes; i++) {
-		node_updown[nodes[i].node_id] = is_listening(nodes[i].node_id);
+		node_updown[nodes[i].cn_nodeid] = is_listening(nodes[i].cn_nodeid);
 	}
 }
 
 /* Get a list of active cluster members */
 static void get_members()
 {
-	struct cl_cluster_nodelist nodelist;
+	int retnodes;
+	int status;
 
-	num_nodes = ioctl(cluster_sock, SIOCCLUSTER_GETMEMBERS, 0);
+	num_nodes = cman_get_node_count(c_handle);
 	if (num_nodes == -1) {
 		log_error("Unable to get node count");
-	} else {
+		return;
+	}
+
 	        /* Not enough room for new nodes list ? */
 	        if (num_nodes > count_nodes && nodes) {
 			free(nodes);
@@ -341,28 +305,19 @@ static void get_members()
 
 		if (nodes == NULL) {
 		        count_nodes = num_nodes + 10; /* Overallocate a little */
-		        nodes = malloc(count_nodes * sizeof(struct cl_cluster_node));
+		nodes = malloc(count_nodes * sizeof(struct cman_node));
 			if (!nodes) {
 			        log_error("Unable to allocate nodes array\n");
 				exit(5);
 			}
 		}
-		nodelist.max_members = count_nodes;
-		nodelist.nodes = nodes;
 
-		num_nodes = ioctl(cluster_sock, SIOCCLUSTER_GETMEMBERS, &nodelist);
-		if (num_nodes <= 0) {
+	status = cman_get_nodes(c_handle, count_nodes, &retnodes, nodes);
+	if (status < 0) {
 		        log_error("Unable to get node details");
 			exit(6);
 		}
 
-		/* Sanity check struct */
-		if (nodes[0].size != sizeof(struct cl_cluster_node)) {
-			log_error
-			    ("sizeof(cl_cluster_node) does not match size returned from the kernel: aborting\n");
-			exit(10);
-		}
-
 		if (node_updown == NULL) {
 			node_updown =
 			    (int *) malloc(sizeof(int) *
@@ -371,7 +326,6 @@ static void get_members()
 			       sizeof(int) * max(num_nodes, max_updown_nodes));
 		}
 	}
-}
 
 /* Convert a node name to a CSID */
 static int _csid_from_name(char *csid, char *name)
@@ -379,8 +333,8 @@ static int _csid_from_name(char *csid, char *name)
 	int i;
 
 	for (i = 0; i < num_nodes; i++) {
-		if (strcmp(name, nodes[i].name) == 0) {
-			memcpy(csid, &nodes[i].node_id, CMAN_MAX_CSID_LEN);
+		if (strcmp(name, nodes[i].cn_name) == 0) {
+			memcpy(csid, &nodes[i].cn_nodeid, CMAN_MAX_CSID_LEN);
 			return 0;
 		}
 	}
@@ -393,8 +347,8 @@ static int _name_from_csid(char *csid, char *name)
 	int i;
 
 	for (i = 0; i < num_nodes; i++) {
-		if (memcmp(csid, &nodes[i].node_id, CMAN_MAX_CSID_LEN) == 0) {
-			strcpy(name, nodes[i].name);
+		if (memcmp(csid, &nodes[i].cn_nodeid, CMAN_MAX_CSID_LEN) == 0) {
+			strcpy(name, nodes[i].cn_name);
 			return 0;
 		}
 	}
@@ -409,8 +363,8 @@ static int name_from_nodeid(int nodeid, char *name)
 	int i;
 
 	for (i = 0; i < num_nodes; i++) {
-		if (nodeid == nodes[i].node_id) {
-			strcpy(name, nodes[i].name);
+		if (nodeid == nodes[i].cn_nodeid) {
+			strcpy(name, nodes[i].cn_name);
 			return 0;
 		}
 	}
@@ -431,7 +385,7 @@ static int nodeid_from_csid(char *csid)
 
 static int _is_quorate()
 {
-	return ioctl(cluster_sock, SIOCCLUSTER_ISQUORATE, 0);
+	return cman_is_quorate(c_handle);
 }
 
 static void sync_ast_routine(void *arg)

daemons/clvmd/clvmd-comms.h

@@ -56,15 +56,19 @@ struct cluster_ops *init_gulm_cluster(void);
 #endif
 
 #ifdef USE_CMAN
-#  include "cnxman-socket.h"
+#  include <netinet/in.h>
+#  include "libcman.h"
 #  define CMAN_MAX_CSID_LEN 4
 #  ifndef MAX_CSID_LEN
 #    define MAX_CSID_LEN CMAN_MAX_CSID_LEN
 #  endif
 #  undef MAX_CLUSTER_MEMBER_NAME_LEN
-#  define MAX_CLUSTER_MEMBER_NAME_LEN	CMAN_MAX_CLUSTER_MEMBER_NAME_LEN
+#  define MAX_CLUSTER_MEMBER_NAME_LEN   CMAN_MAX_NODENAME_LEN
+#  define CMAN_MAX_CLUSTER_MESSAGE 1500
+#  define CLUSTER_PORT_CLVMD 11
 struct cluster_ops *init_cman_cluster(void);
 #endif
 
 
+
 #endif

daemons/clvmd/clvmd.c

@@ -247,7 +247,7 @@ int main(int argc, char *argv[])
 	if ((clops = init_cman_cluster())) {
 		max_csid_len = CMAN_MAX_CSID_LEN;
 		max_cluster_message = CMAN_MAX_CLUSTER_MESSAGE;
-		max_cluster_member_name_len = CMAN_MAX_CLUSTER_MEMBER_NAME_LEN;
+		max_cluster_member_name_len = CMAN_MAX_NODENAME_LEN;
 		syslog(LOG_NOTICE, "Cluster LVM daemon started - connected to CMAN");
 	}
 #endif
@@ -509,6 +509,7 @@ static void main_loop(int local_sock, int cmd_timeout)
 		int quorate = clops->is_quorate();
 
 		/* Wait on the cluster FD and all local sockets/pipes */
+		local_client_head.fd = clops->get_main_cluster_fd();
 		FD_ZERO(&in);
 		for (thisfd = &local_client_head; thisfd != NULL;
 		     thisfd = thisfd->next) {

daemons/clvmd/lvm-functions.c

@@ -303,6 +303,9 @@ int do_lock_lv(unsigned char command, unsigned char lock_flags, char *resource)
 		}
 	}
 
+	if (lock_flags & LCK_PARTIAL_MODE)
+		init_partial(1);
+
 	switch (command) {
 	case LCK_LV_EXCLUSIVE:
 		status = do_activate_lv(resource, lock_flags, LKM_EXMODE);
@@ -331,6 +334,9 @@ int do_lock_lv(unsigned char command, unsigned char lock_flags, char *resource)
 		break;
 	}
 
+	if (lock_flags & LCK_PARTIAL_MODE)
+		init_partial(0);
+
 	/* clean the pool for another command */
 	dm_pool_empty(cmd->mem);
 

daemons/dmeventd/.exported_symbols

@@ -1,3 +1,5 @@
-process_event
-register_device
-unregister_device
+dm_event_register
+dm_event_unregister
+dm_event_get_registered_device
+dm_event_set_timeout
+dm_event_get_timeout

daemons/dmeventd/Makefile.in

@@ -1,14 +1,13 @@
 #
-# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
-# Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+# Copyright (C) 2005 Red Hat, Inc. All rights reserved.
 #
 # This file is part of the device-mapper userspace tools.
 #
 # This copyrighted material is made available to anyone wishing to use,
 # modify, copy, or redistribute it subject to the terms and conditions
-# of the GNU General Public License v.2.
+# of the GNU Lesser General Public License v.2.1.
 #
-# You should have received a copy of the GNU General Public License
+# You should have received a copy of the GNU Lesser General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
@@ -16,36 +15,59 @@ srcdir = @srcdir@
 top_srcdir = @top_srcdir@
 VPATH = @srcdir@
 
-TARGETS = dmevent dmeventd
-INSTALL_TYPE = install_dynamic
+SOURCES = libdevmapper-event.c \
+	  dmeventd.c
 
-SOURCES = noop.c
-CLEAN_TARGETS = dmevent.o dmeventd.o
+LIB_STATIC = libdevmapper-event.a
 
 ifeq ("@LIB_SUFFIX@","dylib")
-  LIB_SHARED = libdmeventdnoop.dylib
+  LIB_SHARED = libdevmapper-event.dylib
 else
-  LIB_SHARED = libdmeventdnoop.so
+  LIB_SHARED = libdevmapper-event.so
 endif
- 
-LDFLAGS += -ldl -ldevmapper -lmultilog
 
 include ../make.tmpl
 
-libdmeventdnoop.so: noop.o
+CLDFLAGS += -ldl -ldevmapper -lpthread
 
-dmevent: dmevent.o $(interfacedir)/libdevmapper.$(LIB_SUFFIX) $(top_srcdir)/lib/event/libdmevent.$(LIB_SUFFIX)
-	$(CC) -o $@ dmevent.o $(LDFLAGS) \
-	      -L$(interfacedir) -L$(DESTDIR)/lib -L$(top_srcdir)/lib/event -L$(top_srcdir)/multilog $(LIBS)
+.PHONY: install_dynamic install_static install_include \
+	install_pkgconfig
 
-dmeventd: dmeventd.o $(interfacedir)/libdevmapper.$(LIB_SUFFIX) $(top_srcdir)/lib/event/libdmevent.$(LIB_SUFFIX)
-	$(CC) -o $@ dmeventd.o $(LDFLAGS) \
-	      -L$(interfacedir) -L$(DESTDIR)/lib -L$(top_srcdir)/lib/event -L$(top_srcdir)/multilog -lpthread -ldmevent $(LIBS)
+INSTALL_TYPE = install_dynamic
 
-install: $(INSTALL_TYPE)
+ifeq ("@STATIC_LINK@", "yes")
+  INSTALL_TYPE += install_static
+endif
 
-.PHONY: install_dynamic
+ifeq ("@PKGCONFIG@", "yes")
+  INSTALL_TYPE += install_pkgconfig
+endif
 
-install_dynamic: dmeventd
-	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) dmeventd $(sbindir)/dmeventd
+install: $(INSTALL_TYPE) install_include
+
+install_include:
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 444 libdevmapper-event.h \
+		$(includedir)/libdevmapper-event.h
+
+install_dynamic: libdevmapper-event.$(LIB_SUFFIX)
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
+		$(libdir)/libdevmapper-event.$(LIB_SUFFIX).$(LIB_VERSION)
+	$(LN_S) -f libdevmapper-event.$(LIB_SUFFIX).$(LIB_VERSION) \
+		$(libdir)/libdevmapper-event.$(LIB_SUFFIX)
+
+install_pkgconfig:
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 444 libdevmapper-event.pc \
+		$(usrlibdir)/pkgconfig/devmapper-event.pc
+
+install_static: libdevmapper-event.a
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
+		$(libdir)/libdevmapper-event.a.$(LIB_VERSION)
+	$(LN_S) -f libdevmapper-event.a.$(LIB_VERSION) $(libdir)/libdevmapper-event.a
+
+.PHONY: distclean_lib distclean
+
+distclean_lib: 
+	$(RM) libdevmapper-event.pc
+
+distclean: distclean_lib
 

daemons/dmeventd/dmevent.c

@@ -1,240 +0,0 @@
-/*
- * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
- *
- * This file is part of the device-mapper userspace tools.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU Lesser General Public License v.2.1.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include "libdevmapper.h"
-#include "libdm-event.h"
-#include "libmultilog.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/file.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <dlfcn.h>
-
-static enum event_type events = ALL_ERRORS; /* All until we can distinguish. */
-static char default_dso_name[] = "noop";  /* default DSO is noop */
-static int default_reg = 1;		 /* default action is register */
-static uint32_t timeout;
-
-struct event_ops {
-int (*dm_register_for_event)(char *dso_name, char *device,
-			     enum event_type event_types);
-int (*dm_unregister_for_event)(char *dso_name, char *device,
-			       enum event_type event_types);
-int (*dm_get_registered_device)(char **dso_name, char **device,
-				enum event_type *event_types, int next);
-int (*dm_set_event_timeout)(char *device, uint32_t time);
-int (*dm_get_event_timeout)(char *device, uint32_t *time);
-};
-
-/* Display help. */
-static void print_usage(char *name)
-{
-	char *cmd = strrchr(name, '/');
-
-	cmd = cmd ? cmd + 1 : name;
-	printf("Usage::\n"
-	       "%s [options] <device>\n"
-	       "\n"
-	       "Options:\n"
-	       "  -d <dso>           Specify the DSO to use.\n"
-	       "  -h                 Print this usage.\n"
-	       "  -l                 List registered devices.\n"
-	       "  -r                 Register for event (default).\n"
-	       "  -t <timeout>       (un)register for timeout event.\n"
-	       "  -u                 Unregister for event.\n"
-	       "\n", cmd);
-}
-
-/* Parse command line arguments. */
-static int parse_argv(int argc, char **argv, char **dso_name_arg,
-		      char **device_arg, int *reg, int *list)
-{
-	int c;
-	const char *options = "d:hlrt:u";
-
-	while ((c = getopt(argc, argv, options)) != -1) {
-		switch (c) {
-		case 'd':
-			*dso_name_arg = optarg;
-			break;
-		case 'h':
-			print_usage(argv[0]);
-			exit(EXIT_SUCCESS);
-		case 'l':
-			*list = 1;
-			break;
-		case 'r':
-			*reg = 1;
-			break;
-		case 't':
-			events = TIMEOUT;
-			if (sscanf(optarg, "%"SCNu32, &timeout) != 1){
-				fprintf(stderr, "invalid timeout '%s'\n",
-					optarg);
-				timeout = 0;
-			}
-			break;
-		case 'u':
-			*reg = 0;
-			break;
-		default:
-			fprintf(stderr, "Unknown option '%c'.\n"
-				"Try '-h' for help.\n", c);
-
-			return 0;
-		}
-	}
-
-	if (optind >= argc) {
-		if (!*list) {
-			fprintf(stderr, "You need to specify a device.\n");
-			return 0;
-		}
-	} else 
-		*device_arg = argv[optind];
-
-	return 1;
-}
-
-
-static int lookup_symbol(void *dl, void **symbol, const char *name)
-{
-	if ((*symbol = dlsym(dl, name)))
-		return 1;
-
-	fprintf(stderr, "error looking up %s symbol: %s\n", name, dlerror());
-
-	return 0;
-}
-
-static int lookup_symbols(void *dl, struct event_ops *e)
-{
-	return lookup_symbol(dl, (void *) &e->dm_register_for_event,
-			     "dm_register_for_event") &&
-	       lookup_symbol(dl, (void *) &e->dm_unregister_for_event,
-			     "dm_unregister_for_event") &&
-	       lookup_symbol(dl, (void *) &e->dm_get_registered_device,
-			     "dm_get_registered_device") &&
-	       lookup_symbol(dl, (void *) &e->dm_set_event_timeout,
-			     "dm_set_event_timeout") &&
-	       lookup_symbol(dl, (void *) &e->dm_get_event_timeout,
-			     "dm_get_event_timeout");
-}
-
-int main(int argc, char **argv)
-{
-	void *dl;
-	struct event_ops e;
-	int list = 0, next = 0, ret, reg = default_reg;
-	char *device, *device_arg = NULL, *dso_name, *dso_name_arg = NULL;
-
-	if (!parse_argv(argc, argv, &dso_name_arg, &device_arg, &reg, &list))
-		exit(EXIT_FAILURE);
-
-	if (device_arg) {
-		if (!(device = strdup(device_arg)))
-			exit(EXIT_FAILURE);
-	} else
-		device = NULL;
-
-	if (dso_name_arg) {
-		if (!(dso_name = strdup(dso_name_arg)))
-			exit(EXIT_FAILURE);
-	} else {
-		if (!(dso_name = strdup(default_dso_name)))
-			exit(EXIT_FAILURE);
-	}
-
-	/* FIXME: use -v/-q options to set this */
-	multilog_add_type(standard, NULL);
-	multilog_init_verbose(standard, _LOG_DEBUG);
-
-	if (!(dl = dlopen("libdmevent.so", RTLD_NOW))){
-		fprintf(stderr, "Cannot dlopen libdmevent.so: %s\n", dlerror());
-		goto out;
-	}
-	if (!(lookup_symbols(dl, &e)))
-		goto out;
-	if (list) {
-		while (1) {
-			if ((ret= e.dm_get_registered_device(&dso_name,
-							     &device,
-							     &events, next)))
-				break;
-			printf("%s %s 0x%x", dso_name, device, events);
-			if (events & TIMEOUT){
-				if ((ret = e.dm_get_event_timeout(device,
-							  	  &timeout))) {
-					ret = EXIT_FAILURE;
-					goto out;
-				}
-				printf(" %"PRIu32"\n", timeout);
-			} else
-				printf("\n");
-			if (device_arg)
-				break;
-
-			next = 1;
-		}
-
-		ret = (ret && device_arg) ? EXIT_FAILURE : EXIT_SUCCESS;
-		goto out;
-	}
-
-	if ((ret = reg ? e.dm_register_for_event(dso_name, device, events) :
-			 e.dm_unregister_for_event(dso_name, device, events))) {
-		fprintf(stderr, "Failed to %sregister %s: %s\n",
-			reg ? "": "un", device, strerror(-ret));
-		ret = EXIT_FAILURE;
-	} else {
-		if (reg && (events & TIMEOUT) &&
-		    ((ret = e.dm_set_event_timeout(device, timeout)))){
-			fprintf(stderr, "Failed to set timeout for %s: %s\n",
-				device, strerror(-ret));
-			ret = EXIT_FAILURE;
-		} else {
-			printf("%s %sregistered successfully.\n",
-			       device, reg ? "" : "un");
-			ret = EXIT_SUCCESS;
-		}
-	}
-
-   out:
-	multilog_del_type(standard);
-
-	if (device)
-		free(device);
-	if (dso_name)
-		free(dso_name);
-
-	exit(ret);
-}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

daemons/dmeventd/dmeventd.h

@@ -0,0 +1,13 @@
+#ifndef __DMEVENTD_DOT_H__
+#define __DMEVENTD_DOT_H__
+
+#define EXIT_LOCKFILE_INUSE      2
+#define EXIT_DESC_CLOSE_FAILURE  3
+#define EXIT_OPEN_PID_FAILURE    4
+#define EXIT_FIFO_FAILURE        5
+#define EXIT_CHDIR_FAILURE       6
+
+void dmeventd(void)
+    __attribute((noreturn));
+
+#endif /* __DMEVENTD_DOT_H__ */

daemons/dmeventd/libdevmapper-event.c

@@ -0,0 +1,510 @@
+ /*
+ * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of the device-mapper userspace tools.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "lib.h"
+#include "libdevmapper-event.h"
+//#include "libmultilog.h"
+#include "dmeventd.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/file.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/wait.h>
+
+/* Set by any of the external fxns the first time one of them is called */
+/* FIXME Unused */
+// static int _logging = 0;
+
+/* Fetch a string off src and duplicate it into *dest. */
+/* FIXME: move to seperate module to share with the daemon. */
+static const char delimiter = ' ';
+static char *fetch_string(char **src)
+{
+	char *p, *ret;
+
+	if ((p = strchr(*src, delimiter)))
+		*p = 0;
+
+	if ((ret = dm_strdup(*src)))
+		*src += strlen(ret) + 1;
+
+	if (p)
+		*p = delimiter;
+
+	return ret;
+}
+
+/* Parse a device message from the daemon. */
+static int parse_message(struct dm_event_daemon_message *msg, char **dso_name,
+			 char **device, enum dm_event_type *events)
+{
+	char *p = msg->msg;
+
+	if ((*dso_name = fetch_string(&p)) &&
+	    (*device   = fetch_string(&p))) {
+		*events = atoi(p);
+
+		return 0;
+	}
+
+	return -ENOMEM;
+}
+
+/*
+ * daemon_read
+ * @fifos
+ * @msg
+ *
+ * Read message from daemon.
+ *
+ * Returns: 0 on failure, 1 on success
+ */
+static int daemon_read(struct dm_event_fifos *fifos, struct dm_event_daemon_message *msg)
+{
+	unsigned bytes = 0;
+	int ret = 0;
+	fd_set fds;
+
+	memset(msg, 0, sizeof(*msg));
+	while (bytes < sizeof(*msg)) {
+		do {
+			/* Watch daemon read FIFO for input. */
+			FD_ZERO(&fds);
+			FD_SET(fifos->server, &fds);
+			ret = select(fifos->server+1, &fds, NULL, NULL, NULL);
+			if (ret < 0 && errno != EINTR) {
+				/* FIXME Log error */
+				return 0;
+			}
+		} while (ret < 1);
+
+		ret = read(fifos->server, msg, sizeof(*msg) - bytes);
+		if (ret < 0) {
+			if ((errno == EINTR) || (errno == EAGAIN))
+				continue;
+			else {
+				/* FIXME Log error */
+				return 0;
+			}
+		}
+
+		bytes += ret;
+	}
+
+	return bytes == sizeof(*msg);
+}
+
+/* Write message to daemon. */
+static int daemon_write(struct dm_event_fifos *fifos, struct dm_event_daemon_message *msg)
+{
+	unsigned bytes = 0;
+	int ret = 0;
+	fd_set fds;
+
+	while (bytes < sizeof(*msg)) {
+		do {
+			/* Watch daemon write FIFO to be ready for output. */
+			FD_ZERO(&fds);
+			FD_SET(fifos->client, &fds);
+			ret = select(fifos->client +1, NULL, &fds, NULL, NULL);
+			if ((ret < 0) && (errno != EINTR)) {
+				/* FIXME Log error */
+				return 0;
+			}
+		} while (ret < 1);
+
+		ret = write(fifos->client, msg, sizeof(*msg) - bytes);
+		if (ret < 0) {
+			if ((errno == EINTR) || (errno == EAGAIN))
+				continue;
+			else {
+				/* fixme: log error */
+				return 0;
+			}
+		}
+
+		bytes += ret;
+	}
+
+	return bytes == sizeof(*msg);
+}
+
+static int daemon_talk(struct dm_event_fifos *fifos, struct dm_event_daemon_message *msg,
+		       int cmd, char *dso_name, char *device,
+		       enum dm_event_type events, uint32_t timeout)
+{
+	memset(msg, 0, sizeof(*msg));
+
+	/*
+	 * Set command and pack the arguments
+	 * into ASCII message string.
+	 */
+	msg->opcode.cmd = cmd;
+
+	if (sizeof(msg->msg) <= (unsigned) snprintf(msg->msg, sizeof(msg->msg),
+						    "%s %s %u %"PRIu32,
+						    dso_name ? dso_name : "",
+						    device ? device : "",
+						    events, timeout)) {
+		stack;
+		return -ENAMETOOLONG;
+	}
+
+	/*
+	 * Write command and message to and
+	 * read status return code from daemon.
+	 */
+	if (!daemon_write(fifos, msg)) {
+		stack;
+		return -EIO;
+	}
+
+	if (!daemon_read(fifos, msg)) {
+		stack;
+		return -EIO;
+	}
+
+	return msg->opcode.status;
+}
+
+static volatile sig_atomic_t daemon_running = 0;
+
+static void daemon_running_signal_handler(int sig)
+{
+	daemon_running = 1;
+}
+
+/*
+ * start_daemon
+ *
+ * This function forks off a process (dmeventd) that will handle
+ * the events.  A signal must be returned from the child to
+ * indicate when it is ready to handle requests.  The parent
+ * (this function) returns 1 if there is a daemon running. 
+ *
+ * Returns: 1 on success, 0 otherwise
+ */
+static int start_daemon(void)
+{
+	int pid, ret=0;
+	void *old_hand;
+	sigset_t set, oset;
+
+	/* Must be able to acquire signal */
+	old_hand = signal(SIGUSR1, &daemon_running_signal_handler);
+	if (old_hand == SIG_ERR) {
+		log_error("Unable to setup signal handler.");
+		return 0;
+	}
+
+	if (sigemptyset(&set) || sigaddset(&set, SIGUSR1)) {
+		log_error("Unable to fill signal set.");
+	} else if (sigprocmask(SIG_UNBLOCK, &set, &oset)) {
+		log_error("Can't unblock the potentially blocked signal SIGUSR1");
+	}
+	
+	pid = fork();
+
+	if (pid < 0)
+		log_error("Unable to fork.\n");
+	else if (pid) { /* parent waits for child to get ready for requests */
+		int status;
+
+		/* FIXME Better way to do this? */
+		while (!waitpid(pid, &status, WNOHANG) && !daemon_running)
+			sleep(1);
+
+		if (daemon_running) {
+			ret = 1;
+		} else {
+			switch (WEXITSTATUS(status)) {
+			case EXIT_LOCKFILE_INUSE:
+				/*
+				 * Note, this is ok... we still have daemon
+				 * that we can communicate with...
+				 */
+				log_print("Starting dmeventd failed: "
+					  "dmeventd already running.\n");
+				ret = 1;
+				break;
+			default:
+				log_error("Unable to start dmeventd.\n");
+				break;
+			}
+		}
+		/*
+		 * Sometimes, a single process may perform multiple calls
+		 * that result in a daemon starting and exiting.  If we
+		 * don't reset this, the second (or greater) time the daemon
+		 * is started will cause this logic not to work.
+		 */
+		daemon_running = 0;
+	} else {
+		signal(SIGUSR1, SIG_IGN); /* don't care about error */
+
+		/* dmeventd function is responsible for properly setting **
+		** itself up.  It must never return - only exit.  This is**
+		** why it is followed by an EXIT_FAILURE                 */
+		dmeventd();
+		exit(EXIT_FAILURE);
+	}
+
+	/* FIXME What if old_hand is SIG_ERR? */
+	if (signal(SIGUSR1, old_hand) == SIG_ERR)
+		log_error("Unable to reset signal handler.");
+
+	if (sigprocmask(SIG_SETMASK, &oset, NULL))
+		log_error("Unable to reset signal mask.");
+
+	return ret;
+}
+
+/* Initialize client. */
+static int init_client(struct dm_event_fifos *fifos)
+{
+	/* FIXME Is fifo the most suitable method? */
+	/* FIXME Why not share comms/daemon code with something else e.g. multipath? */
+
+	/* init fifos */
+	memset(fifos, 0, sizeof(*fifos));
+	fifos->client_path = DM_EVENT_FIFO_CLIENT;
+	fifos->server_path = DM_EVENT_FIFO_SERVER;
+
+	/* FIXME The server should be responsible for these, not the client. */
+	/* Create fifos */
+	if (((mkfifo(fifos->client_path, 0600) == -1) && errno != EEXIST) ||
+	    ((mkfifo(fifos->server_path, 0600) == -1) && errno != EEXIST)) {
+		log_error("%s: Failed to create a fifo.\n", __func__);
+		return 0;
+	}
+
+	/* FIXME Warn/abort if perms are wrong - not something to fix silently. */
+	/* If they were already there, make sure permissions are ok. */
+	if (chmod(fifos->client_path, 0600)) {
+		log_error("Unable to set correct file permissions on %s",
+			fifos->client_path);
+		return 0;
+	}
+
+	if (chmod(fifos->server_path, 0600)) {
+		log_error("Unable to set correct file permissions on %s",
+			fifos->server_path);
+		return 0;
+	}
+
+	/*
+	 * Open the fifo used to read from the daemon.
+	 * Allows daemon to create its write fifo...
+	 */
+	if ((fifos->server = open(fifos->server_path, O_RDWR)) < 0) {
+		log_error("%s: open server fifo %s\n",
+			__func__, fifos->server_path);
+		stack;
+		return 0;
+	}
+
+	/* Lock out anyone else trying to do communication with the daemon. */
+	/* FIXME Why failure not retry?  How do multiple processes communicate? */
+	if (flock(fifos->server, LOCK_EX) < 0){
+		log_error("%s: flock %s\n", __func__, fifos->server_path);
+		close(fifos->server);
+		return 0;
+	}
+
+	/* Anyone listening?  If not, errno will be ENXIO */
+	while ((fifos->client = open(fifos->client_path,
+				  O_WRONLY | O_NONBLOCK)) < 0) {
+		if (errno != ENXIO) {
+			log_error("%s: Can't open client fifo %s: %s\n",
+				  __func__, fifos->client_path, strerror(errno));
+			close(fifos->server);
+			stack;
+			return 0;
+		}
+		
+		/* FIXME Unnecessary if daemon was started before calling this */
+		if (!start_daemon()) {
+			stack;
+			return 0;
+		}
+	}
+	
+	return 1;
+}
+
+static void dtr_client(struct dm_event_fifos *fifos)
+{
+	if (flock(fifos->server, LOCK_UN))
+		log_error("flock unlock %s\n", fifos->server_path);
+
+	close(fifos->client);
+	close(fifos->server);
+}
+
+/* Check, if a block device exists. */
+static int device_exists(char *device)
+{
+	struct stat st_buf;
+	char path2[PATH_MAX];
+
+	if (!device)
+		return 0;
+
+	if (device[0] == '/') /* absolute path */
+		return !stat(device, &st_buf) && S_ISBLK(st_buf.st_mode);
+
+	if (PATH_MAX <= snprintf(path2, PATH_MAX, "%s/%s", dm_dir(), device))
+		return 0;
+
+	return !stat(path2, &st_buf) && S_ISBLK(st_buf.st_mode);
+}
+
+/* Handle the event (de)registration call and return negative error codes. */
+static int do_event(int cmd, struct dm_event_daemon_message *msg,
+		    char *dso_name, char *device, enum dm_event_type events,
+		    uint32_t timeout)
+{
+	int ret;
+	struct dm_event_fifos fifos;
+
+	/* FIXME Start the daemon here if it's not running e.g. exclusive lock file */
+	/* FIXME Move this to separate 'dm_event_register_handler' - if no daemon here, fail */
+	if (!init_client(&fifos)) {
+		stack;
+		return -ESRCH;
+	}
+
+	/* FIXME Use separate 'dm_event_register_handler' function to pass in dso? */
+	ret = daemon_talk(&fifos, msg, cmd, dso_name, device, events, timeout);
+
+	/* what is the opposite of init? */
+	dtr_client(&fifos);
+	
+	return ret;
+}
+
+/* FIXME remove dso_name - use handle instead */
+/* FIXME Use uuid not path! */
+/* External library interface. */
+int dm_event_register(char *dso_name, char *device_path,
+		      enum dm_event_type events)
+{
+	int ret;
+	struct dm_event_daemon_message msg;
+
+	if (!device_exists(device_path)) {
+		log_error("%s: device not found", device_path);
+		return 0;
+	}
+
+	if ((ret = do_event(DM_EVENT_CMD_REGISTER_FOR_EVENT, &msg,
+			    dso_name, device_path, events, 0)) < 0) {
+		log_error("%s: event registration failed: %s", device_path,
+			  strerror(-ret));
+		return 0;
+	}
+
+	return 1;
+}
+
+int dm_event_unregister(char *dso_name, char *device_path,
+			enum dm_event_type events)
+{
+	int ret;
+	struct dm_event_daemon_message msg;
+
+	if (!device_exists(device_path)) {
+		log_error("%s: device not found", device_path);
+		return 0;
+	}
+
+	if ((ret = do_event(DM_EVENT_CMD_UNREGISTER_FOR_EVENT, &msg,
+			    dso_name, device_path, events, 0)) < 0) {
+		log_error("%s: event deregistration failed: %s", device_path,
+			  strerror(-ret));
+		return 0;
+	}
+
+	return 1;
+}
+
+int dm_event_get_registered_device(char **dso_name, char **device_path,
+			     enum dm_event_type *events, int next)
+{
+	int ret;
+	char *dso_name_arg = NULL, *device_path_arg = NULL;
+	struct dm_event_daemon_message msg;
+
+	if (!(ret = do_event(next ? DM_EVENT_CMD_GET_NEXT_REGISTERED_DEVICE :
+				    DM_EVENT_CMD_GET_REGISTERED_DEVICE,
+			     &msg, *dso_name, *device_path, *events, 0)))
+		ret = parse_message(&msg, &dso_name_arg, &device_path_arg,
+				    events);
+
+	if (next){
+		if (*dso_name)
+			dm_free(*dso_name);
+		if (*device_path)
+			dm_free(*device_path);
+		*dso_name = dso_name_arg;
+		*device_path = device_path_arg;
+	} else {
+		if (!(*dso_name))
+			*dso_name = dso_name_arg;
+		if (!(*device_path))
+			*device_path = device_path_arg;
+	}
+
+	return ret;
+}
+
+int dm_event_set_timeout(char *device_path, uint32_t timeout)
+{
+	struct dm_event_daemon_message msg;
+
+	if (!device_exists(device_path))
+		return -ENODEV;
+	return do_event(DM_EVENT_CMD_SET_TIMEOUT, &msg,
+			NULL, device_path, 0, timeout);
+}
+
+int dm_event_get_timeout(char *device_path, uint32_t *timeout)
+{
+	int ret;
+	struct dm_event_daemon_message msg;
+
+	if (!device_exists(device_path))
+		return -ENODEV;
+	if (!(ret = do_event(DM_EVENT_CMD_GET_TIMEOUT, &msg, NULL, device_path, 0, 0)))
+		*timeout = atoi(msg.msg);
+	return ret;
+}
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

daemons/dmeventd/libdevmapper-event.h

@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of the device-mapper userspace tools.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * Note that this file is released only as part of a technology preview
+ * and its contents may change in future updates in ways that do not
+ * preserve compatibility.
+ */
+
+#ifndef LIB_DMEVENT_H
+#define LIB_DMEVENT_H
+
+#include <stdint.h>
+
+/* FIXME This stuff must be configurable. */
+
+#define	DM_EVENT_DAEMON		"/sbin/dmeventd"
+#define DM_EVENT_LOCKFILE	"/var/lock/dmeventd"
+#define	DM_EVENT_FIFO_CLIENT	"/var/run/dmeventd-client"
+#define	DM_EVENT_FIFO_SERVER	"/var/run/dmeventd-server"
+#define DM_EVENT_PIDFILE	"/var/run/dmeventd.pid"
+
+#define DM_EVENT_DEFAULT_TIMEOUT 10
+
+/* Commands for the daemon passed in the message below. */
+enum dm_event_command {
+	DM_EVENT_CMD_ACTIVE = 1,
+	DM_EVENT_CMD_REGISTER_FOR_EVENT,
+	DM_EVENT_CMD_UNREGISTER_FOR_EVENT,
+	DM_EVENT_CMD_GET_REGISTERED_DEVICE,
+	DM_EVENT_CMD_GET_NEXT_REGISTERED_DEVICE,
+	DM_EVENT_CMD_SET_TIMEOUT,
+	DM_EVENT_CMD_GET_TIMEOUT,
+};
+
+/* Message passed between client and daemon. */
+struct dm_event_daemon_message {
+	union {
+		unsigned int cmd;	/* FIXME Use fixed size. */
+		int	 status;	/* FIXME Use fixed size. */
+	} opcode;
+	char msg[252];		/* FIXME Why is this 252 ? */
+} __attribute__((packed));	/* FIXME Do this properly! */
+
+/* FIXME Is this meant to be exported?  I can't see where the interface uses it. */
+/* Fifos for client/daemon communication. */
+struct dm_event_fifos {
+	int client;
+	int server;
+	const char *client_path;
+	const char *server_path;
+};
+
+/* Event type definitions. */
+/* FIXME Use masks to separate the types and provide for extension. */
+enum dm_event_type {
+	DM_EVENT_SINGLE		= 0x01, /* Report multiple errors just once. */
+	DM_EVENT_MULTI		= 0x02, /* Report all of them. */
+
+	DM_EVENT_SECTOR_ERROR	= 0x04, /* Failure on a particular sector. */
+	DM_EVENT_DEVICE_ERROR	= 0x08, /* Device failure. */
+	DM_EVENT_PATH_ERROR	= 0x10, /* Failure on an io path. */
+	DM_EVENT_ADAPTOR_ERROR	= 0x20, /* Failure off a host adaptor. */
+
+	DM_EVENT_SYNC_STATUS	= 0x40, /* Mirror synchronization completed/failed. */
+	DM_EVENT_TIMEOUT	= 0x80, /* Timeout has occured */
+};
+
+/* FIXME Use a mask. */
+#define	DM_EVENT_ALL_ERRORS (DM_EVENT_SECTOR_ERROR | DM_EVENT_DEVICE_ERROR | \
+			     DM_EVENT_PATH_ERROR | DM_EVENT_ADAPTOR_ERROR)
+
+/* Prototypes for event lib interface. */
+
+/* FIXME Replace device with standard name/uuid/devno choice */
+/* Interface changes: 
+   First register a handler, passing in a unique ref for the device. */
+//  int dm_event_register_handler(const char *dso_name, const char *device);
+//  int dm_event_register(const char *dso_name, const char *name, const char *uuid, uint32_t major, uint32_t minor, enum dm_event_type events);
+/* Or (better?) add to task structure and use existing functions - run a task to register/unregister events - we may need to run task withe that with the new event mechanism anyway, then the dso calls just hook in.
+*/
+ 
+/* FIXME Missing consts? */
+int dm_event_register(char *dso_name, char *device, enum dm_event_type events);
+int dm_event_unregister(char *dso_name, char *device,
+			enum dm_event_type events);
+int dm_event_get_registered_device(char **dso_name, char **device,
+				   enum dm_event_type *events, int next);
+int dm_event_set_timeout(char *device, uint32_t timeout);
+int dm_event_get_timeout(char *device, uint32_t *timeout);
+
+/* Prototypes for DSO interface. */
+void process_event(const char *device, enum dm_event_type event);
+int register_device(const char *device);
+int unregister_device(const char *device);
+
+#endif

daemons/dmeventd/libdevmapper-event.pc.in

@@ -0,0 +1,12 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: devmapper-event
+Description: device-mapper event library
+Version: @DM_LIB_VERSION@
+Requires: devmapper
+Cflags: -I${includedir}
+Libs: -L${libdir} -ldevmapper-event
+Libs.private: -lpthread -ldl

daemons/dmeventd/mktestdevices

@@ -1,12 +0,0 @@
-#!/bin/sh
-#
-# Create test devices for dmeventd
-#
-
-trap "rm -f /tmp/tmp.$$" 0 1 2 3 15
-
-echo "0 1024 zero" > /tmp/tmp.$$
-dmsetup create test /tmp/tmp.$$
-dmsetup create test1 /tmp/tmp.$$
-
-kill -15 $$

daemons/dmeventd/noop.c

@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
- *
- * This file is part of the device-mapper userspace tools.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU Lesser General Public License v.2.1.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include "libdm-event.h"
-#include "libmultilog.h"
-
-
-void process_event(char *device, enum event_type event)
-{
-	log_err("[%s] %s(%d) - Device: %s, Event %d\n",
-		__FILE__, __func__, __LINE__, device, event);
-}
-
-int register_device(char *device)
-{
-	log_err("[%s] %s(%d) - Device: %s\n",
-		__FILE__, __func__, __LINE__, device);
-
-	return 1;
-}
-
-int unregister_device(char *device)
-{
-	log_err("[%s] %s(%d) - Device: %s\n",
-		__FILE__, __func__, __LINE__, device);
-
-	return 1;
-}

daemons/dmeventd/plugins/Makefile.in

@@ -0,0 +1,22 @@
+#
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+SUBDIRS += mirror
+
+include $(top_srcdir)/make.tmpl
+

daemons/dmeventd/plugins/mirror/.exported_symbols

@@ -0,0 +1,3 @@
+process_event
+register_device
+unregister_device

daemons/dmeventd/plugins/mirror/Makefile.in

@@ -0,0 +1,36 @@
+#
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+INCLUDES += -I${top_srcdir}/tools
+CLDFLAGS += -L${top_srcdir}/tools -ldevmapper -llvm2cmd
+
+SOURCES = dmeventd_mirror.c
+
+ifeq ("@LIB_SUFFIX@","dylib")
+  LIB_SHARED = libdevmapper-event-lvm2mirror.dylib
+else
+  LIB_SHARED = libdevmapper-event-lvm2mirror.so
+endif
+
+include $(top_srcdir)/make.tmpl
+
+install: libdevmapper-event-lvm2mirror.$(LIB_SUFFIX)
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
+		$(libdir)/$<.$(LIB_VERSION)
+	$(LN_S) -f $<.$(LIB_VERSION) $(libdir)/$<
+

daemons/dmeventd/plugins/mirror/dmeventd_mirror.c

@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "libdevmapper.h"
+#include "libdevmapper-event.h"
+#include "lvm2cmd.h"
+#include "lvm-string.h"
+
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <unistd.h>
+
+#include <syslog.h> /* FIXME Replace syslog with multilog */
+
+#define ME_IGNORE    0
+#define ME_INSYNC    1
+#define ME_FAILURE   2
+
+/* FIXME: We may need to lock around operations to these */
+static int register_count = 0;
+static struct dm_pool *mem_pool = NULL;
+
+static int _get_mirror_event(char *params)
+{
+	int i, rtn = ME_INSYNC;
+	int max_args = 30;  /* should support at least 8-way mirrors */
+	char *args[max_args];
+	char *dev_status_str;
+	char *log_status_str;
+	char *sync_str;
+	char *p;
+	int log_argc, num_devs, num_failures=0;
+
+	if (max_args <= split_words(params, max_args, args)) {
+		syslog(LOG_ERR, "Unable to split mirror parameters: Arg list too long");
+		return -E2BIG;
+	}
+
+	/*
+	 * Unused:  0 409600 mirror
+	 * Used  :  2 253:4 253:5 400/400 1 AA 3 cluster 253:3 A
+	*/
+	num_devs = atoi(args[0]);
+	dev_status_str = args[3 + num_devs];
+	log_argc = atoi(args[4 + num_devs]);
+	log_status_str = args[4 + num_devs + log_argc];
+	sync_str = args[1 + num_devs];
+
+	/* Check for bad mirror devices */
+	for (i = 0; i < num_devs; i++) {
+		if (dev_status_str[i] == 'D') {
+			syslog(LOG_ERR, "Mirror device, %s, has failed.\n", args[i+1]);
+			num_failures++;
+		}
+	}
+
+	/* Check for bad log device */
+	if (log_status_str[0] == 'D') {
+		syslog(LOG_ERR, "Log device, %s, has failed.\n",
+		       args[3 + num_devs + log_argc]);
+		num_failures++;
+	}
+
+	if (num_failures) {
+		rtn = ME_FAILURE;
+		goto out;
+	}
+
+	p = strstr(sync_str, "/");
+	if (p) {
+		p[0] = '\0';
+		if (strcmp(sync_str, p+1))
+			rtn = ME_IGNORE;
+		p[0] = '/';
+	} else {
+		/*
+		 * How the hell did we get this?
+		 * Might mean all our parameters are screwed.
+		 */
+		syslog(LOG_ERR, "Unable to parse sync string.");
+		rtn = ME_IGNORE;
+	}
+ out:
+	return rtn;
+}
+
+static void _temporary_log_fn(int level, const char *file, int line, const char *format)
+{
+	return;
+	syslog(LOG_DEBUG, "%s", format);
+}
+
+static int _remove_failed_devices(const char *device)
+{
+	int r;
+	void *handle;
+	int cmd_size = 256;	/* FIXME Use system restriction */
+	char cmd_str[cmd_size];
+	char *vg = NULL, *lv = NULL, *layer = NULL;
+
+	if (strlen(device) > 200)
+		return -ENAMETOOLONG;
+
+	if (!split_dm_name(mem_pool, device, &vg, &lv, &layer)) {
+		syslog(LOG_ERR, "Unable to determine VG name from %s",
+		       device);
+		return -ENOMEM;
+	}
+
+	/* FIXME Is any sanity-checking required on %s? */
+	if (cmd_size <= snprintf(cmd_str, cmd_size, "vgreduce --removemissing %s", vg)) {
+		/* this error should be caught above, but doesn't hurt to check again */
+		syslog(LOG_ERR, "Unable to form LVM command: Device name too long");
+		dm_pool_empty(mem_pool);  /* FIXME: not safe with multiple threads */
+		return -ENAMETOOLONG;
+	}
+
+	lvm2_log_fn(_temporary_log_fn);
+	handle = lvm2_init();
+	lvm2_log_level(handle, 1);
+	r = lvm2_run(handle, cmd_str);
+
+	dm_pool_empty(mem_pool);  /* FIXME: not safe with multiple threads */
+	return (r == 1)? 0: -1;
+}
+
+void process_event(const char *device, enum dm_event_type event)
+{
+	struct dm_task *dmt;
+	void *next = NULL;
+	uint64_t start, length;
+	char *target_type = NULL;
+	char *params;
+
+	/* FIXME Move inside libdevmapper */
+	if (!(dmt = dm_task_create(DM_DEVICE_STATUS))) {
+		syslog(LOG_ERR, "Unable to create dm_task.\n");
+		goto fail;
+	}
+
+	if (!dm_task_set_name(dmt, device)) {
+		syslog(LOG_ERR, "Unable to set device name.\n");
+		goto fail;
+	}
+
+	if (!dm_task_run(dmt)) {
+		syslog(LOG_ERR, "Unable to run task.\n");
+		goto fail;
+	}
+
+	do {
+		next = dm_get_next_target(dmt, next, &start, &length,
+					  &target_type, &params);
+
+		if (strcmp(target_type, "mirror")) {
+			syslog(LOG_INFO, "%s has unmirrored portion.\n", device);
+			continue;
+		}
+
+		switch(_get_mirror_event(params)) {
+		case ME_INSYNC:
+			/* FIXME: all we really know is that this
+			   _part_ of the device is in sync
+			   Also, this is not an error
+			*/
+			syslog(LOG_NOTICE, "%s is now in-sync\n", device);
+			break;
+		case ME_FAILURE:
+			syslog(LOG_ERR, "Device failure in %s\n", device);
+			if (_remove_failed_devices(device))
+				syslog(LOG_ERR, "Failed to remove faulty devices in %s\n",
+				       device);
+			/* Should check before warning user that device is now linear
+			else
+				syslog(LOG_NOTICE, "%s is now a linear device.\n",
+					device);
+			*/
+			break;
+		case ME_IGNORE:
+			break;
+		default:
+			syslog(LOG_INFO, "Unknown event received.\n");
+		}
+	} while (next);
+
+ fail:
+	if (dmt)
+		dm_task_destroy(dmt);
+}
+
+int register_device(const char *device)
+{
+	syslog(LOG_INFO, "Monitoring %s for events\n", device);
+
+	/*
+	 * Need some space for allocations.  1024 should be more
+	 * than enough for what we need (device mapper name splitting)
+	 */
+	if (!mem_pool)
+		mem_pool = dm_pool_create("mirror_dso", 1024);
+
+	if (!mem_pool)
+		return 0;
+
+	register_count++;
+
+        return 1;
+}
+
+int unregister_device(const char *device)
+{
+        syslog(LOG_INFO, "Stopped monitoring %s for events\n", device);
+
+	if (!(--register_count)) {
+		dm_pool_destroy(mem_pool);
+		mem_pool = NULL;
+	}
+
+        return 1;
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

dmeventd/Makefile.in

@@ -0,0 +1,22 @@
+#
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+SUBDIRS += mirror
+
+include $(top_srcdir)/make.tmpl
+

dmeventd/mirror/.exported_symbols

@@ -0,0 +1,3 @@
+process_event
+register_device
+unregister_device

dmeventd/mirror/Makefile.in

@@ -0,0 +1,36 @@
+#
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+INCLUDES += -I${top_srcdir}/tools
+CLDFLAGS += -L${top_srcdir}/tools -ldevmapper -llvm2cmd
+
+SOURCES = dmeventd_mirror.c
+
+ifeq ("@LIB_SUFFIX@","dylib")
+  LIB_SHARED = libdevmapper-event-lvm2mirror.dylib
+else
+  LIB_SHARED = libdevmapper-event-lvm2mirror.so
+endif
+
+include $(top_srcdir)/make.tmpl
+
+install: libdevmapper-event-lvm2mirror.$(LIB_SUFFIX)
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
+		$(libdir)/$<.$(LIB_VERSION)
+	$(LN_S) -f $<.$(LIB_VERSION) $(libdir)/$<
+

dmeventd/mirror/dmeventd_mirror.c

@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "libdevmapper.h"
+#include "libdevmapper-event.h"
+#include "lvm2cmd.h"
+#include "lvm-string.h"
+
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <unistd.h>
+
+#include <syslog.h> /* FIXME Replace syslog with multilog */
+
+#define ME_IGNORE    0
+#define ME_INSYNC    1
+#define ME_FAILURE   2
+
+/* FIXME: We may need to lock around operations to these */
+static int register_count = 0;
+static struct dm_pool *mem_pool = NULL;
+
+static int _get_mirror_event(char *params)
+{
+	int i, rtn = ME_INSYNC;
+	int max_args = 30;  /* should support at least 8-way mirrors */
+	char *args[max_args];
+	char *dev_status_str;
+	char *log_status_str;
+	char *sync_str;
+	char *p;
+	int log_argc, num_devs, num_failures=0;
+
+	if (max_args <= split_words(params, max_args, args)) {
+		syslog(LOG_ERR, "Unable to split mirror parameters: Arg list too long");
+		return -E2BIG;
+	}
+
+	/*
+	 * Unused:  0 409600 mirror
+	 * Used  :  2 253:4 253:5 400/400 1 AA 3 cluster 253:3 A
+	*/
+	num_devs = atoi(args[0]);
+	dev_status_str = args[3 + num_devs];
+	log_argc = atoi(args[4 + num_devs]);
+	log_status_str = args[4 + num_devs + log_argc];
+	sync_str = args[1 + num_devs];
+
+	/* Check for bad mirror devices */
+	for (i = 0; i < num_devs; i++) {
+		if (dev_status_str[i] == 'D') {
+			syslog(LOG_ERR, "Mirror device, %s, has failed.\n", args[i+1]);
+			num_failures++;
+		}
+	}
+
+	/* Check for bad log device */
+	if (log_status_str[0] == 'D') {
+		syslog(LOG_ERR, "Log device, %s, has failed.\n",
+		       args[3 + num_devs + log_argc]);
+		num_failures++;
+	}
+
+	if (num_failures) {
+		rtn = ME_FAILURE;
+		goto out;
+	}
+
+	p = strstr(sync_str, "/");
+	if (p) {
+		p[0] = '\0';
+		if (strcmp(sync_str, p+1))
+			rtn = ME_IGNORE;
+		p[0] = '/';
+	} else {
+		/*
+		 * How the hell did we get this?
+		 * Might mean all our parameters are screwed.
+		 */
+		syslog(LOG_ERR, "Unable to parse sync string.");
+		rtn = ME_IGNORE;
+	}
+ out:
+	return rtn;
+}
+
+static void _temporary_log_fn(int level, const char *file, int line, const char *format)
+{
+	return;
+	syslog(LOG_DEBUG, "%s", format);
+}
+
+static int _remove_failed_devices(const char *device)
+{
+	int r;
+	void *handle;
+	int cmd_size = 256;	/* FIXME Use system restriction */
+	char cmd_str[cmd_size];
+	char *vg = NULL, *lv = NULL, *layer = NULL;
+
+	if (strlen(device) > 200)
+		return -ENAMETOOLONG;
+
+	if (!split_dm_name(mem_pool, device, &vg, &lv, &layer)) {
+		syslog(LOG_ERR, "Unable to determine VG name from %s",
+		       device);
+		return -ENOMEM;
+	}
+
+	/* FIXME Is any sanity-checking required on %s? */
+	if (cmd_size <= snprintf(cmd_str, cmd_size, "vgreduce --removemissing %s", vg)) {
+		/* this error should be caught above, but doesn't hurt to check again */
+		syslog(LOG_ERR, "Unable to form LVM command: Device name too long");
+		dm_pool_empty(mem_pool);  /* FIXME: not safe with multiple threads */
+		return -ENAMETOOLONG;
+	}
+
+	lvm2_log_fn(_temporary_log_fn);
+	handle = lvm2_init();
+	lvm2_log_level(handle, 1);
+	r = lvm2_run(handle, cmd_str);
+
+	dm_pool_empty(mem_pool);  /* FIXME: not safe with multiple threads */
+	return (r == 1)? 0: -1;
+}
+
+void process_event(const char *device, enum dm_event_type event)
+{
+	struct dm_task *dmt;
+	void *next = NULL;
+	uint64_t start, length;
+	char *target_type = NULL;
+	char *params;
+
+	/* FIXME Move inside libdevmapper */
+	if (!(dmt = dm_task_create(DM_DEVICE_STATUS))) {
+		syslog(LOG_ERR, "Unable to create dm_task.\n");
+		goto fail;
+	}
+
+	if (!dm_task_set_name(dmt, device)) {
+		syslog(LOG_ERR, "Unable to set device name.\n");
+		goto fail;
+	}
+
+	if (!dm_task_run(dmt)) {
+		syslog(LOG_ERR, "Unable to run task.\n");
+		goto fail;
+	}
+
+	do {
+		next = dm_get_next_target(dmt, next, &start, &length,
+					  &target_type, &params);
+
+		if (strcmp(target_type, "mirror")) {
+			syslog(LOG_INFO, "%s has unmirrored portion.\n", device);
+			continue;
+		}
+
+		switch(_get_mirror_event(params)) {
+		case ME_INSYNC:
+			/* FIXME: all we really know is that this
+			   _part_ of the device is in sync
+			   Also, this is not an error
+			*/
+			syslog(LOG_NOTICE, "%s is now in-sync\n", device);
+			break;
+		case ME_FAILURE:
+			syslog(LOG_ERR, "Device failure in %s\n", device);
+			if (_remove_failed_devices(device))
+				syslog(LOG_ERR, "Failed to remove faulty devices in %s\n",
+				       device);
+			/* Should check before warning user that device is now linear
+			else
+				syslog(LOG_NOTICE, "%s is now a linear device.\n",
+					device);
+			*/
+			break;
+		case ME_IGNORE:
+			break;
+		default:
+			syslog(LOG_INFO, "Unknown event received.\n");
+		}
+	} while (next);
+
+ fail:
+	if (dmt)
+		dm_task_destroy(dmt);
+}
+
+int register_device(const char *device)
+{
+	syslog(LOG_INFO, "Monitoring %s for events\n", device);
+
+	/*
+	 * Need some space for allocations.  1024 should be more
+	 * than enough for what we need (device mapper name splitting)
+	 */
+	if (!mem_pool)
+		mem_pool = dm_pool_create("mirror_dso", 1024);
+
+	if (!mem_pool)
+		return 0;
+
+	register_count++;
+
+        return 1;
+}
+
+int unregister_device(const char *device)
+{
+        syslog(LOG_INFO, "Stopped monitoring %s for events\n", device);
+
+	if (!(--register_count)) {
+		dm_pool_destroy(mem_pool);
+		mem_pool = NULL;
+	}
+
+        return 1;
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

doc/example.conf

@@ -289,4 +289,9 @@ activation {
     # dirs = [ "/etc/lvm/metadata", "/mnt/disk2/lvm/metadata2" ]
 #}
 
+# Event daemon
+#
+#dmeventd {
+    # mirror_library = "libdevmapper-event-lvm2mirror.so"
+#}
 

include/Makefile.in

@@ -41,3 +41,5 @@ install:
 
 install_cluster:
 
+cflow:
+

lib/Makefile.in

@@ -38,6 +38,7 @@ SOURCES =\
 	commands/toolcontext.c \
 	config/config.c \
 	datastruct/btree.c \
+	datastruct/list.c \
 	datastruct/str_list.c \
 	device/dev-cache.c \
 	device/dev-io.c \
@@ -133,9 +134,22 @@ ifeq ("@HAVE_LIBDL@", "yes")
 	misc/sharedlib.c
 endif
 
+ifeq ("@DMEVENTD@", "yes")
+  CLDFLAGS += -ldevmapper-event
+endif
+
 LIB_STATIC = liblvm.a
 
 $(SUBDIRS): $(LIB_STATIC)
 
+CLEAN_TARGETS += liblvm.cflow
+
 include $(top_srcdir)/make.tmpl
 
+liblvm.cflow: $(SOURCES)
+	set -e; (echo -n "SOURCES += "; \
+		 echo $(SOURCES) | \
+		 sed "s/^/ /;s/ / $(top_srcdir)\/lib\//g;s/$$//"; \
+		 ) > $@
+
+cflow: liblvm.cflow

lib/activate/activate.c

@@ -27,6 +27,7 @@
 #include "str_list.h"
 #include "config.h"
 #include "filter.h"
+#include "segtype.h"
 
 #include <limits.h>
 #include <fcntl.h>
@@ -75,6 +76,11 @@ int driver_version(char *version, size_t size)
 {
 	return 0;
 }
+int target_version(const char *target_name, uint32_t *maj,
+		   uint32_t *min, uint32_t *patchlevel)
+{
+	return 0;
+}
 int target_present(const char *target_name)
 {
 	return 0;
@@ -89,12 +95,12 @@ int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
 {
 	return 0;
 }
-int lv_snapshot_percent(struct logical_volume *lv, float *percent)
+int lv_snapshot_percent(const struct logical_volume *lv, float *percent)
 {
 	return 0;
 }
-int lv_mirror_percent(struct logical_volume *lv, int wait, float *percent,
-		      uint32_t *event_nr)
+int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv,
+		      int wait, float *percent, uint32_t *event_nr)
 {
 	return 0;
 }
@@ -170,8 +176,8 @@ void set_activation(int act)
 		log_verbose("Activation enabled. Device-mapper kernel "
 			    "driver will be used.");
 	else
-		log_verbose("Activation disabled. No device-mapper "
-			    "interaction will be attempted.");
+		log_print("WARNING: Activation disabled. No device-mapper "
+			  "interaction will be attempted.");
 }
 
 int activation(void)
@@ -277,7 +283,8 @@ int driver_version(char *version, size_t size)
 	return dm_driver_version(version, size);
 }
 
-static int _target_present(const char *target_name)
+int target_version(const char *target_name, uint32_t *maj,
+		   uint32_t *min, uint32_t *patchlevel)
 {
 	int r = 0;
 	struct dm_task *dmt;
@@ -300,6 +307,9 @@ static int _target_present(const char *target_name)
 
 		if (!strcmp(target_name, target->name)) {
 			r = 1;
+			*maj = target->version[0];
+			*min = target->version[1];
+			*patchlevel = target->version[2];
 			goto out;
 		}
 
@@ -314,6 +324,7 @@ static int _target_present(const char *target_name)
 
 int target_present(const char *target_name, int use_modprobe)
 {
+	uint32_t maj, min, patchlevel;
 #ifdef MODPROBE_CMD
 	char module[128];
 #endif
@@ -323,7 +334,7 @@ int target_present(const char *target_name, int use_modprobe)
 
 #ifdef MODPROBE_CMD
 	if (use_modprobe) {
-		if (_target_present(target_name))
+		if (target_version(target_name, &maj, &min, &patchlevel))
 			return 1;
 
 		if (lvm_snprintf(module, sizeof(module), "dm-%s", target_name)
@@ -338,7 +349,7 @@ int target_present(const char *target_name, int use_modprobe)
 	}
 #endif
 
-	return _target_present(target_name);
+	return target_version(target_name, &maj, &min, &patchlevel);
 }
 
 /*
@@ -396,7 +407,7 @@ int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
 /*
  * Returns 1 if percent set, else 0 on failure.
  */
-int lv_snapshot_percent(struct logical_volume *lv, float *percent)
+int lv_snapshot_percent(const struct logical_volume *lv, float *percent)
 {
 	int r;
 	struct dev_manager *dm;
@@ -416,8 +427,8 @@ int lv_snapshot_percent(struct logical_volume *lv, float *percent)
 }
 
 /* FIXME Merge with snapshot_percent */
-int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, int wait, float *percent,
-		      uint32_t *event_nr)
+int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv,
+		      int wait, float *percent, uint32_t *event_nr)
 {
 	int r;
 	struct dev_manager *dm;
@@ -563,18 +574,53 @@ int lvs_in_vg_opened(struct volume_group *vg)
 	return count;
 }
 
+static int _register_dev_for_events(struct cmd_context *cmd,
+				    struct logical_volume *lv, int do_reg)
+{
+#ifdef DMEVENTD
+	struct list *tmp;
+	struct lv_segment *seg;
+	int (*reg) (struct dm_pool *mem, struct lv_segment *,
+		    struct config_tree *cft, int events);
+
+	list_iterate(tmp, &lv->segments) {
+		seg = list_item(tmp, struct lv_segment);
+
+		reg = NULL;
+
+		if (do_reg) {
+			if (seg->segtype->ops->target_register_events)
+				reg = seg->segtype->ops->target_register_events;
+		} else if (seg->segtype->ops->target_unregister_events)
+			reg = seg->segtype->ops->target_unregister_events;
+
+		if (reg)
+			/* FIXME specify events */
+			if (!reg(cmd->mem, seg, cmd->cft, 0)) {
+				stack;
+				return 0;
+			}
+	}
+
+#endif
+	return 1;
+}
+
 static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s,
 		       int error_if_not_suspended)
 {
-	struct logical_volume *lv;
+	struct logical_volume *lv, *lv_pre;
 	struct lvinfo info;
 
 	if (!activation())
 		return 1;
 
+	if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
+		return_0;
+
 	/* Use precommitted metadata if present */
-	if (!(lv = lv_from_lvid(cmd, lvid_s, 1)))
-		return 0;
+	if (!(lv_pre = lv_from_lvid(cmd, lvid_s, 1)))
+		return_0;
 
 	if (test_mode()) {
 		_skip("Suspending '%s'.", lv->name);
@@ -588,13 +634,16 @@ static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s,
 		return error_if_not_suspended ? 0 : 1;
 
 	/* If VG was precommitted, preload devices for the LV */
-	if ((lv->vg->status & PRECOMMITTED)) {
-		if (!_lv_preload(lv)) {
+	if ((lv_pre->vg->status & PRECOMMITTED)) {
+		if (!_lv_preload(lv_pre)) {
 			/* FIXME Revert preloading */
 			return_0;
 		}
 	}
 
+	if (!_register_dev_for_events(cmd, lv, 0))
+		stack;
+
 	memlock_inc();
 	if (!_lv_suspend_lv(lv)) {
 		memlock_dec();
@@ -645,6 +694,9 @@ static int _lv_resume(struct cmd_context *cmd, const char *lvid_s,
 	memlock_dec();
 	fs_unlock();
 
+	if (!_register_dev_for_events(cmd, lv, 1))
+		stack;
+
 	return 1;
 }
 
@@ -688,6 +740,9 @@ int lv_deactivate(struct cmd_context *cmd, const char *lvid_s)
 		return 0;
 	}
 
+	if (!_register_dev_for_events(cmd, lv, 0))
+		stack;
+
 	memlock_inc();
 	r = _lv_deactivate(lv);
 	memlock_dec();
@@ -758,6 +813,9 @@ static int _lv_activate(struct cmd_context *cmd, const char *lvid_s,
 	memlock_dec();
 	fs_unlock();
 
+	if (!_register_dev_for_events(cmd, lv, 1))
+		stack;
+
 	return r;
 }
 

lib/activate/activate.h

@@ -37,6 +37,8 @@ int library_version(char *version, size_t size);
 int lvm1_present(struct cmd_context *cmd);
 
 int target_present(const char *target_name, int use_modprobe);
+int target_version(const char *target_name, uint32_t *maj,
+                   uint32_t *min, uint32_t *patchlevel);
 
 void activation_exit(void);
 
@@ -68,9 +70,9 @@ int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
 /*
  * Returns 1 if percent has been set, else 0.
  */
-int lv_snapshot_percent(struct logical_volume *lv, float *percent);
-int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, int wait, float *percent,
-		      uint32_t *event_nr);
+int lv_snapshot_percent(const struct logical_volume *lv, float *percent);
+int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv,
+		      int wait, float *percent, uint32_t *event_nr);
 
 /*
  * Return number of LVs in the VG that are active.

lib/activate/dev_manager.c

@@ -85,7 +85,7 @@ char *build_dlid(struct dev_manager *dm, const char *lvid, const char *layer)
 	return _build_dlid(dm->mem, lvid, layer);
 }
 
-static inline int _read_only_lv(struct logical_volume *lv)
+static int _read_only_lv(struct logical_volume *lv)
 {
 	return (!(lv->vg->status & LVM_WRITE) || !(lv->status & LVM_WRITE));
 }
@@ -432,7 +432,8 @@ void dev_manager_exit(void)
 }
 
 int dev_manager_snapshot_percent(struct dev_manager *dm,
-				 struct logical_volume *lv, float *percent)
+				 const struct logical_volume *lv,
+				 float *percent)
 {
 	char *name;
 	const char *dlid;
@@ -845,7 +846,6 @@ static int _add_new_lv_to_dtree(struct dev_manager *dm, struct dm_tree *dtree,
 	    dm_tree_node_get_context(dnode))
 		return 1;
 
-	/* FIXME How do we determine whether a pre-existing node need reloading or not? */
 	if (!(lvlayer = dm_pool_alloc(dm->mem, sizeof(*lvlayer)))) {
 		log_error("_add_new_lv_to_dtree: pool alloc failed for %s %s.", lv->name, layer);
 		return 0;
@@ -978,6 +978,8 @@ static int _tree_action(struct dev_manager *dm, struct logical_volume *lv, actio
 			goto_out;
 		break;
 	case SUSPEND:
+		if (!lv_is_origin(lv) && !lv_is_cow(lv))
+			dm_tree_skip_lockfs(root);
 		if (!dm_tree_suspend_children(root, dlid, ID_LEN + sizeof(UUID_PREFIX) - 1))
 			goto_out;
 		break;

lib/activate/dev_manager.h

@@ -41,7 +41,8 @@ int dev_manager_info(struct dm_pool *mem, const char *name,
 		     const struct logical_volume *lv,
 		     int mknodes, int with_open_count, struct dm_info *info);
 int dev_manager_snapshot_percent(struct dev_manager *dm,
-				 struct logical_volume *lv, float *percent);
+				 const struct logical_volume *lv,
+				 float *percent);
 int dev_manager_mirror_percent(struct dev_manager *dm,
 			       struct logical_volume *lv, int wait,
 			       float *percent, uint32_t *event_nr);

lib/cache/lvmcache.c

@@ -86,7 +86,8 @@ int vgs_locked(void)
 	return _vgs_locked;
 }
 
-struct lvmcache_vginfo *vginfo_from_vgname(const char *vgname)
+/* If vgid supplied, require a match. */
+struct lvmcache_vginfo *vginfo_from_vgname(const char *vgname, const char *vgid)
 {
 	struct lvmcache_vginfo *vginfo;
 
@@ -96,10 +97,16 @@ struct lvmcache_vginfo *vginfo_from_vgname(const char *vgname)
 	if (!(vginfo = dm_hash_lookup(_vgname_hash, vgname)))
 		return NULL;
 
+	if (vgid)
+		do 
+			if (!strncmp(vgid, vginfo->vgid, sizeof(vginfo->vgid)))
+				return vginfo;
+		while ((vginfo = vginfo->next));
+
 	return vginfo;
 }
 
-const struct format_type *fmt_from_vgname(const char *vgname)
+const struct format_type *fmt_from_vgname(const char *vgname, const char *vgid)
 {
 	struct lvmcache_vginfo *vginfo;
 	struct lvmcache_info *info;
@@ -107,8 +114,9 @@ const struct format_type *fmt_from_vgname(const char *vgname)
 	struct list *devh, *tmp;
 	struct list devs;
 	struct device_list *devl;
+	char vgid_found[ID_LEN + 1];
 
-	if (!(vginfo = vginfo_from_vgname(vgname)))
+	if (!(vginfo = vginfo_from_vgname(vgname, vgid)))
 		return NULL;
 
 	/* This function is normally called before reading metadata so
@@ -120,6 +128,8 @@ const struct format_type *fmt_from_vgname(const char *vgname)
 		list_add(&devs, &devl->list);
 	}
 
+	memcpy(vgid_found, vginfo->vgid, sizeof(vgid_found));
+
 	list_iterate_safe(devh, tmp, &devs) {
 		devl = list_item(devh, struct device_list);
 		label_read(devl->dev, &label);
@@ -127,6 +137,11 @@ const struct format_type *fmt_from_vgname(const char *vgname)
 		dm_free(devl);
 	}
 
+	/* If vginfo changed, caller needs to rescan */
+	if (!(vginfo = vginfo_from_vgname(vgname, vgid_found)) ||
+	    strncmp(vginfo->vgid, vgid_found, sizeof(vgid_found)))
+		return NULL;
+
 	return vginfo->fmt;
 }
 
@@ -148,6 +163,19 @@ struct lvmcache_vginfo *vginfo_from_vgid(const char *vgid)
 	return vginfo;
 }
 
+const char *vgname_from_vgid(struct dm_pool *mem, const char *vgid)
+{
+	struct lvmcache_vginfo *vginfo;
+
+	if ((vginfo = vginfo_from_vgid(vgid))) {
+		if (mem)
+			return dm_pool_strdup(mem, vginfo->vgname);
+		return vginfo->vgname;
+	}
+
+	return NULL;
+}
+
 struct lvmcache_info *info_from_pvid(const char *pvid)
 {
 	struct lvmcache_info *info;
@@ -232,10 +260,33 @@ int lvmcache_label_scan(struct cmd_context *cmd, int full_scan)
 	return r;
 }
 
+struct list *lvmcache_get_vgids(struct cmd_context *cmd, int full_scan)
+{
+	struct list *vgids;
+	struct lvmcache_vginfo *vginfo;
+
+	lvmcache_label_scan(cmd, full_scan);
+
+	if (!(vgids = str_list_create(cmd->mem))) {
+		log_error("vgids list allocation failed");
+		return NULL;
+	}
+
+	list_iterate_items(vginfo, &_vginfos) {
+		if (!str_list_add(cmd->mem, vgids, 
+				  dm_pool_strdup(cmd->mem, vginfo->vgid))) {
+			log_error("strlist allocation failed");
+			return NULL;
+		}
+	}
+
+	return vgids;
+}
+
 struct list *lvmcache_get_vgnames(struct cmd_context *cmd, int full_scan)
 {
 	struct list *vgnames;
-	struct lvmcache_vginfo *vgi;
+	struct lvmcache_vginfo *vginfo;
 
 	lvmcache_label_scan(cmd, full_scan);
 
@@ -244,9 +295,9 @@ struct list *lvmcache_get_vgnames(struct cmd_context *cmd, int full_scan)
 		return NULL;
 	}
 
-	list_iterate_items(vgi, &_vginfos) {
+	list_iterate_items(vginfo, &_vginfos) {
 		if (!str_list_add(cmd->mem, vgnames, 
-				  dm_pool_strdup(cmd->mem, vgi->vgname))) {
+				  dm_pool_strdup(cmd->mem, vginfo->vgname))) {
 			log_error("strlist allocation failed");
 			return NULL;
 		}
@@ -297,7 +348,7 @@ struct device *device_from_pvid(struct cmd_context *cmd, struct id *pvid)
 	return NULL;
 }
 
-static void _drop_vginfo(struct lvmcache_info *info)
+static int _drop_vginfo(struct lvmcache_info *info)
 {
 	if (!list_empty(&info->list)) {
 		list_del(&info->list);
@@ -306,8 +357,18 @@ static void _drop_vginfo(struct lvmcache_info *info)
 
 	if (info->vginfo && list_empty(&info->vginfo->infos)) {
 		dm_hash_remove(_vgname_hash, info->vginfo->vgname);
+		if (info->vginfo->next) {
+                	if (!dm_hash_insert(_vgname_hash, info->vginfo->vgname, info->vginfo->next)) {
+                        	log_error("vg hash re-insertion failed: %s",
+					  info->vginfo->vgname);
+                        	return 0;
+			}
+                }
+
 		if (info->vginfo->vgname)
 			dm_free(info->vginfo->vgname);
+		if (info->vginfo->creation_host)
+			dm_free(info->vginfo->creation_host);
 		if (*info->vginfo->vgid)
 			dm_hash_remove(_vgid_hash, info->vginfo->vgid);
 		list_del(&info->vginfo->list);
@@ -315,6 +376,8 @@ static void _drop_vginfo(struct lvmcache_info *info)
 	}
 
 	info->vginfo = NULL;
+
+	return 1;
 }
 
 /* Unused
@@ -356,8 +419,10 @@ static int _lvmcache_update_vgid(struct lvmcache_info *info, const char *vgid)
 
 	if (info->vginfo && *info->vginfo->vgid)
 		dm_hash_remove(_vgid_hash, info->vginfo->vgid);
-	if (!vgid)
+	if (!vgid) {
+		log_debug("lvmcache: %s: clearing VGID", dev_name(info->dev));
 		return 1;
+	}
 
 	strncpy(info->vginfo->vgid, vgid, sizeof(info->vginfo->vgid));
 	info->vginfo->vgid[sizeof(info->vginfo->vgid) - 1] = '\0';
@@ -367,19 +432,110 @@ static int _lvmcache_update_vgid(struct lvmcache_info *info, const char *vgid)
 		return 0;
 	}
 
+	log_debug("lvmcache: %s: setting %s VGID to %s", dev_name(info->dev),
+		  info->vginfo->vgname, info->vginfo->vgid);
+
 	return 1;
 }
 
-int lvmcache_update_vgname(struct lvmcache_info *info, const char *vgname)
+static int _insert_vginfo(struct lvmcache_vginfo *new_vginfo, const char *vgid,
+			  uint32_t vgstatus, const char *creation_host,
+			  struct lvmcache_vginfo *primary_vginfo)
 {
-	struct lvmcache_vginfo *vginfo;
+	struct lvmcache_vginfo *last_vginfo = primary_vginfo;
+	char uuid_primary[64], uuid_new[64];
+	int use_new = 0;
+	
+	/* Pre-existing VG takes precedence. Unexported VG takes precedence. */
+	if (primary_vginfo) {
+		if (!id_write_format((struct id *)vgid, uuid_new, sizeof(uuid_new)))
+			return_0;
+
+		if (!id_write_format((struct id *)&primary_vginfo->vgid, uuid_primary,
+				     sizeof(uuid_primary)))
+			return_0;
+
+		/*
+		 * If   Primary not exported, new exported => keep
+		 * Else Primary exported, new not exported => change
+		 * Else Primary has hostname for this machine => keep
+		 * Else Primary has no hostname, new has one => change
+		 * Else New has hostname for this machine => change
+		 * Else Keep primary.
+		 */
+		if (!(primary_vginfo->status & EXPORTED_VG) &&
+		    (vgstatus & EXPORTED_VG))
+			log_error("WARNING: Duplicate VG name %s: "
+				  "Existing %s takes precedence over "
+				  "exported %s", new_vginfo->vgname,
+				  uuid_primary, uuid_new);
+		else if ((primary_vginfo->status & EXPORTED_VG) &&
+			   !(vgstatus & EXPORTED_VG)) {
+			log_error("WARNING: Duplicate VG name %s: "
+				  "%s takes precedence over exported %s",
+				  new_vginfo->vgname, uuid_new,
+				  uuid_primary);
+			use_new = 1;
+		} else if (primary_vginfo->creation_host &&
+			   !strcmp(primary_vginfo->creation_host,
+				   primary_vginfo->fmt->cmd->hostname))
+			log_error("WARNING: Duplicate VG name %s: "
+				  "Existing %s (created here) takes precedence "
+				  "over %s", new_vginfo->vgname, uuid_primary,
+				  uuid_new);
+		else if (!primary_vginfo->creation_host && creation_host) {
+			log_error("WARNING: Duplicate VG name %s: "
+				  "%s (with creation_host) takes precedence over %s",
+				  new_vginfo->vgname, uuid_new,
+				  uuid_primary);
+			use_new = 1;
+		} else if (creation_host &&
+			   !strcmp(creation_host,
+				   primary_vginfo->fmt->cmd->hostname)) {
+			log_error("WARNING: Duplicate VG name %s: "
+				  "%s (created here) takes precedence over %s",
+				  new_vginfo->vgname, uuid_new,
+				  uuid_primary);
+			use_new = 1;
+		}
+
+		if (!use_new) {
+			while (last_vginfo->next)
+				last_vginfo = last_vginfo->next;
+			last_vginfo->next = new_vginfo;
+			return 1;
+		}
+
+		dm_hash_remove(_vgname_hash, primary_vginfo->vgname);
+	}
+
+	if (!dm_hash_insert(_vgname_hash, new_vginfo->vgname, new_vginfo)) {
+		log_error("cache_update: vg hash insertion failed: %s",
+		  	new_vginfo->vgname);
+		return 0;
+	}
+
+	if (primary_vginfo)
+		new_vginfo->next = primary_vginfo;
+
+	return 1;
+}
+
+static int _lvmcache_update_vgname(struct lvmcache_info *info,
+				   const char *vgname, const char *vgid,
+				   uint32_t vgstatus, const char *creation_host)
+{
+	struct lvmcache_vginfo *vginfo, *primary_vginfo;
+	// struct lvmcache_vginfo  *old_vginfo, *next;
 
 	/* If vgname is NULL and we don't already have a vgname, 
 	 * assume ORPHAN - we want every entry to have a vginfo
 	 * attached for scanning reasons.
 	 */
-	if (!vgname && !info->vginfo)
+	if (!vgname && !info->vginfo) {
 		vgname = ORPHAN;
+		vgid = ORPHAN;
+	}
 
 	if (!vgname || (info->vginfo && !strcmp(info->vginfo->vgname, vgname)))
 		return 1;
@@ -388,7 +544,43 @@ int lvmcache_update_vgname(struct lvmcache_info *info, const char *vgname)
 	_drop_vginfo(info);
 
 	/* Get existing vginfo or create new one */
-	if (!(vginfo = vginfo_from_vgname(vgname))) {
+	if (!(vginfo = vginfo_from_vgname(vgname, vgid))) {
+/*** FIXME - vginfo ends up duplicated instead of renamed.
+		// Renaming?  This lookup fails.
+		if ((vginfo = vginfo_from_vgid(vgid))) {
+			next = vginfo->next;
+			old_vginfo = vginfo_from_vgname(vginfo->vgname, NULL);
+			if (old_vginfo == vginfo) {
+				dm_hash_remove(_vgname_hash, old_vginfo->vgname);
+				if (old_vginfo->next) {
+					if (!dm_hash_insert(_vgname_hash, old_vginfo->vgname, old_vginfo->next)) {
+                        			log_error("vg hash re-insertion failed: %s",
+							  old_vginfo->vgname);
+                        			return 0;
+					}
+				}
+			} else do {
+				if (old_vginfo->next == vginfo) {
+					old_vginfo->next = vginfo->next;
+					break;
+				}
+			} while ((old_vginfo = old_vginfo->next));
+			vginfo->next = NULL;
+
+			dm_free(vginfo->vgname);
+			if (!(vginfo->vgname = dm_strdup(vgname))) {
+				log_error("cache vgname alloc failed for %s", vgname);
+				return 0;
+			}
+
+			// Rename so can assume new name does not already exist 
+			if (!dm_hash_insert(_vgname_hash, vginfo->vgname, vginfo->next)) {
+				log_error("vg hash re-insertion failed: %s",
+					  vginfo->vgname);
+                      		return 0;
+			}
+		} else {
+***/
 		if (!(vginfo = dm_malloc(sizeof(*vginfo)))) {
 			log_error("lvmcache_update_vgname: list alloc failed");
 			return 0;
@@ -400,9 +592,9 @@ int lvmcache_update_vgname(struct lvmcache_info *info, const char *vgname)
 			return 0;
 		}
 		list_init(&vginfo->infos);
-		if (!dm_hash_insert(_vgname_hash, vginfo->vgname, vginfo)) {
-			log_error("cache_update: vg hash insertion failed: %s",
-				  vginfo->vgname);
+			primary_vginfo = vginfo_from_vgname(vgname, NULL);
+		if (!_insert_vginfo(vginfo, vgid, vgstatus, creation_host,
+				    primary_vginfo)) {
 			dm_free(vginfo->vgname);
 			dm_free(vginfo);
 			return 0;
@@ -412,6 +604,9 @@ int lvmcache_update_vgname(struct lvmcache_info *info, const char *vgname)
 			list_add(&_vginfos, &vginfo->list);
 		else
 			list_add_h(&_vginfos, &vginfo->list);
+/***
+		}
+***/
 	}
 
 	info->vginfo = vginfo;
@@ -420,8 +615,59 @@ int lvmcache_update_vgname(struct lvmcache_info *info, const char *vgname)
 	/* FIXME Check consistency of list! */
 	vginfo->fmt = info->fmt;
 
-	log_debug("lvmcache: %s now %s%s", dev_name(info->dev),
-		  *vgname ? "in VG " : "orphaned", vgname);
+	log_debug("lvmcache: %s: now %s%s%s%s%s", dev_name(info->dev),
+		  *vgname ? "in VG " : "orphaned", vgname,
+		  vginfo->vgid[0] ? " (" : "",
+		  vginfo->vgid[0] ? vginfo->vgid : "",
+		  vginfo->vgid[0] ? ")" : "");
+
+	return 1;
+}
+
+static int _lvmcache_update_vgstatus(struct lvmcache_info *info, uint32_t vgstatus,
+				     const char *creation_host)
+{
+	if (!info || !info->vginfo)
+		return 1;
+
+	if ((info->vginfo->status & EXPORTED_VG) != (vgstatus & EXPORTED_VG))
+		log_debug("lvmcache: %s: VG %s %s exported",
+			  dev_name(info->dev), info->vginfo->vgname,
+			  vgstatus & EXPORTED_VG ? "now" : "no longer");
+
+	info->vginfo->status = vgstatus;
+
+	if (!creation_host)
+		return 1;
+
+	if (info->vginfo->creation_host && !strcmp(creation_host,
+						   info->vginfo->creation_host))
+		return 1;
+
+	if (info->vginfo->creation_host)
+		dm_free(info->vginfo->creation_host);
+
+	if (!(info->vginfo->creation_host = dm_strdup(creation_host))) {
+		log_error("cache creation host alloc failed for %s",
+			  creation_host);
+		return 0;
+	}
+
+	log_debug("lvmcache: %s: VG %s: Set creation host to %s.",
+		  dev_name(info->dev), info->vginfo->vgname, creation_host);
+
+	return 1;
+}
+
+int lvmcache_update_vgname_and_id(struct lvmcache_info *info,
+				  const char *vgname, const char *vgid,
+				  uint32_t vgstatus, const char *creation_host)
+{
+	if (!_lvmcache_update_vgname(info, vgname, vgid, vgstatus,
+				     creation_host) ||
+	    !_lvmcache_update_vgid(info, vgid) ||
+	    !_lvmcache_update_vgstatus(info, vgstatus, creation_host))
+		return_0;
 
 	return 1;
 }
@@ -431,20 +677,17 @@ int lvmcache_update_vg(struct volume_group *vg)
 	struct pv_list *pvl;
 	struct lvmcache_info *info;
 	char pvid_s[ID_LEN + 1];
-	int vgid_updated = 0;
 
 	pvid_s[sizeof(pvid_s) - 1] = '\0';
 
 	list_iterate_items(pvl, &vg->pvs) {
 		strncpy(pvid_s, (char *) &pvl->pv->id, sizeof(pvid_s) - 1);
 		/* FIXME Could pvl->pv->dev->pvid ever be different? */
-		if ((info = info_from_pvid(pvid_s))) {
-			lvmcache_update_vgname(info, vg->name);
-			if (!vgid_updated) {
-				_lvmcache_update_vgid(info, (char *) &vg->id);
-				vgid_updated = 1;
-			}
-		}
+		if ((info = info_from_pvid(pvid_s)) &&
+		    !lvmcache_update_vgname_and_id(info, vg->name,
+						   (char *) &vg->id,
+						   vg->status, NULL))
+			return_0;
 	}
 
 	return 1;
@@ -452,7 +695,8 @@ int lvmcache_update_vg(struct volume_group *vg)
 
 struct lvmcache_info *lvmcache_add(struct labeller *labeller, const char *pvid,
 				   struct device *dev,
-				   const char *vgname, const char *vgid)
+				   const char *vgname, const char *vgid,
+				   uint32_t vgstatus)
 {
 	struct label *label;
 	struct lvmcache_info *existing, *info;
@@ -548,7 +792,7 @@ struct lvmcache_info *lvmcache_add(struct labeller *labeller, const char *pvid,
 		return NULL;
 	}
 
-	if (!lvmcache_update_vgname(info, vgname)) {
+	if (!lvmcache_update_vgname_and_id(info, vgname, vgid, vgstatus, NULL)) {
 		if (!existing) {
 			dm_hash_remove(_pvid_hash, pvid_s);
 			strcpy(info->dev->pvid, "");
@@ -558,10 +802,6 @@ struct lvmcache_info *lvmcache_add(struct labeller *labeller, const char *pvid,
 		return NULL;
 	}
 
-	if (!_lvmcache_update_vgid(info, vgid))
-		/* Non-critical */
-		stack;
-
 	return info;
 }
 
@@ -576,9 +816,16 @@ static void _lvmcache_destroy_entry(struct lvmcache_info *info)
 
 static void _lvmcache_destroy_vgnamelist(struct lvmcache_vginfo *vginfo)
 {
-	if (vginfo->vgname)
-		dm_free(vginfo->vgname);
-	dm_free(vginfo);
+	struct lvmcache_vginfo *next;
+
+	do {
+		next = vginfo->next;
+		if (vginfo->vgname)
+			dm_free(vginfo->vgname);
+		if (vginfo->creation_host)
+			dm_free(vginfo->creation_host);
+		dm_free(vginfo);
+	} while ((vginfo = next));
 }
 
 static void _lvmcache_destroy_lockname(int present)

lib/cache/lvmcache.h

@@ -33,15 +33,20 @@ struct cmd_context;
 struct format_type;
 struct volume_group;
 
+/* One per VG */
 struct lvmcache_vginfo {
 	struct list list;	/* Join these vginfos together */
 	struct list infos;	/* List head for lvmcache_infos */
 	const struct format_type *fmt;
 	char *vgname;		/* "" == orphan */
+	uint32_t status;
 	char vgid[ID_LEN + 1];
 	char _padding[7];
+	struct lvmcache_vginfo *next; /* Another VG with same name? */
+	char *creation_host;
 };
 
+/* One per device */
 struct lvmcache_info {
 	struct list list;	/* Join VG members together */
 	struct list mdas;	/* list head for metadata areas */
@@ -64,21 +69,26 @@ int lvmcache_label_scan(struct cmd_context *cmd, int full_scan);
 /* Add/delete a device */
 struct lvmcache_info *lvmcache_add(struct labeller *labeller, const char *pvid,
 				   struct device *dev,
-				   const char *vgname, const char *vgid);
+				   const char *vgname, const char *vgid,
+				   uint32_t vgstatus);
 void lvmcache_del(struct lvmcache_info *info);
 
 /* Update things */
-int lvmcache_update_vgname(struct lvmcache_info *info, const char *vgname);
+int lvmcache_update_vgname_and_id(struct lvmcache_info *info,
+				  const char *vgname, const char *vgid,
+				  uint32_t vgstatus, const char *hostname);
 int lvmcache_update_vg(struct volume_group *vg);
 
 void lvmcache_lock_vgname(const char *vgname, int read_only);
 void lvmcache_unlock_vgname(const char *vgname);
 
 /* Queries */
-const struct format_type *fmt_from_vgname(const char *vgname);
-struct lvmcache_vginfo *vginfo_from_vgname(const char *vgname);
+const struct format_type *fmt_from_vgname(const char *vgname, const char *vgid);
+struct lvmcache_vginfo *vginfo_from_vgname(const char *vgname,
+					   const char *vgid);
 struct lvmcache_vginfo *vginfo_from_vgid(const char *vgid);
 struct lvmcache_info *info_from_pvid(const char *pvid);
+const char *vgname_from_vgid(struct dm_pool *mem, const char *vgid);
 struct device *device_from_pvid(struct cmd_context *cmd, struct id *pvid);
 int vgs_locked(void);
 int vgname_is_locked(const char *vgname);
@@ -87,4 +97,8 @@ int vgname_is_locked(const char *vgname);
 /* Set full_scan to 1 to reread every filtered device label */
 struct list *lvmcache_get_vgnames(struct cmd_context *cmd, int full_scan);
 
+/* Returns list of struct str_lists containing pool-allocated copy of vgids */
+/* Set full_scan to 1 to reread every filtered device label */
+struct list *lvmcache_get_vgids(struct cmd_context *cmd, int full_scan);
+
 #endif

lib/commands/toolcontext.c

@@ -657,7 +657,7 @@ static int _init_formats(struct cmd_context *cmd)
 				return 0;
 			}
 			if (!(lib = load_shared_library(cmd->cft, cv->v.str,
-							"format"))) {
+							"format", 0))) {
 				stack;
 				return 0;
 			}
@@ -753,7 +753,7 @@ static int _init_segtypes(struct cmd_context *cmd)
 				return 0;
 			}
 			if (!(lib = load_shared_library(cmd->cft, cv->v.str,
-							"segment type"))) {
+							"segment type", 0))) {
 				stack;
 				return 0;
 			}

lib/config/defaults.h

@@ -34,6 +34,8 @@
 #define DEFAULT_LOCK_DIR "/var/lock/lvm"
 #define DEFAULT_LOCKING_LIB "lvm2_locking.so"
 
+#define DEFAULT_DMEVENTD_MIRROR_LIB "libdevmapper-event-lvm2mirror.so"
+
 #define DEFAULT_UMASK 0077
 
 #ifdef LVM1_FALLBACK

lib/datastruct/btree.c

@@ -107,7 +107,7 @@ void *btree_get_data(struct btree_iter *it)
 	return ((struct node *) it)->data;
 }
 
-static inline struct node *_left(struct node *n)
+static struct node *_left(struct node *n)
 {
 	while (n->l)
 		n = n->l;

lib/datastruct/list.h

@@ -33,107 +33,61 @@ struct list {
  * The list head's next and previous pointers point back to itself.
  */
 #define LIST_INIT(name)	struct list name = { &(name), &(name) }
-static inline void list_init(struct list *head)
-{
-	head->n = head->p = head;
-}
+void list_init(struct list *head);
 
 /*
  * Insert an element before 'head'.
  * If 'head' is the list head, this adds an element to the end of the list.
  */
-static inline void list_add(struct list *head, struct list *elem)
-{
-	assert(head->n);
-
-	elem->n = head;
-	elem->p = head->p;
-
-	head->p->n = elem;
-	head->p = elem;
-}
+void list_add(struct list *head, struct list *elem);
 
 /*
  * Insert an element after 'head'.
  * If 'head' is the list head, this adds an element to the front of the list.
  */
-static inline void list_add_h(struct list *head, struct list *elem)
-{
-	assert(head->n);
-
-	elem->n = head->n;
-	elem->p = head;
-
-	head->n->p = elem;
-	head->n = elem;
-}
+void list_add_h(struct list *head, struct list *elem);
 
 /*
  * Delete an element from its list.
  * Note that this doesn't change the element itself - it may still be safe
  * to follow its pointers.
  */
-static inline void list_del(struct list *elem)
-{
-	elem->n->p = elem->p;
-	elem->p->n = elem->n;
-}
+void list_del(struct list *elem);
 
 /*
  * Is the list empty?
  */
-static inline int list_empty(struct list *head)
-{
-	return head->n == head;
-}
+int list_empty(struct list *head);
 
 /*
  * Is this the first element of the list?
  */
-static inline int list_start(struct list *head, struct list *elem)
-{
-	return elem->p == head;
-}
+int list_start(struct list *head, struct list *elem);
 
 /*
  * Is this the last element of the list?
  */
-static inline int list_end(struct list *head, struct list *elem)
-{
-	return elem->n == head;
-}
+int list_end(struct list *head, struct list *elem);
 
 /*
  * Return first element of the list or NULL if empty
  */
-static inline struct list *list_first(struct list *head)
-{
-	return (list_empty(head) ? NULL : head->n);
-}
+struct list *list_first(struct list *head);
 
 /*
  * Return last element of the list or NULL if empty
  */
-static inline struct list *list_last(struct list *head)
-{
-	return (list_empty(head) ? NULL : head->p);
-}
+struct list *list_last(struct list *head);
 
 /*
  * Return the previous element of the list, or NULL if we've reached the start.
  */
-static inline struct list *list_prev(struct list *head, struct list *elem)
-{
-	return (list_start(head, elem) ? NULL : elem->p);
-}
+struct list *list_prev(struct list *head, struct list *elem);
 
 /*
  * Return the next element of the list, or NULL if we've reached the end.
  */
-static inline struct list *list_next(struct list *head, struct list *elem)
-{
-	return (list_end(head, elem) ? NULL : elem->n);
-}
+struct list *list_next(struct list *head, struct list *elem);
 
 /*
  * Given the address v of an instance of 'struct list' called 'head' 
@@ -244,15 +198,6 @@ static inline struct list *list_next(struct list *head, struct list *elem)
 /*
  * Return the number of elements in a list by walking it.
  */
-static inline unsigned int list_size(const struct list *head)
-{
-	unsigned int s = 0;
-	const struct list *v;
-
-	list_iterate(v, head)
-	    s++;
-
-	return s;
-}
+unsigned int list_size(const struct list *head);
 
 #endif

lib/device/dev-cache.c

@@ -479,7 +479,7 @@ static void _check_closed(struct device *dev)
 		log_err("Device '%s' has been left open.", dev_name(dev));
 }
 
-static inline void _check_for_open_devices(void)
+static void _check_for_open_devices(void)
 {
 	dm_hash_iter(_cache.names, (dm_hash_iterate_fn) _check_closed);
 }
@@ -664,7 +664,7 @@ void dev_iter_destroy(struct dev_iter *iter)
 	dm_free(iter);
 }
 
-static inline struct device *_iter_next(struct dev_iter *iter)
+static struct device *_iter_next(struct dev_iter *iter)
 {
 	struct device *d = btree_get_data(iter->current);
 	iter->current = btree_next(iter->current);
@@ -682,3 +682,14 @@ struct device *dev_iter_get(struct dev_iter *iter)
 
 	return NULL;
 }
+
+int dev_fd(struct device *dev)
+{
+	return dev->fd;
+}
+
+const char *dev_name(const struct device *dev)
+{
+	return (dev) ? list_item(dev->aliases.n, struct str_list)->str :
+	    "unknown device";
+}

lib/device/dev-io.c

@@ -418,7 +418,6 @@ int dev_open_flags(struct device *dev, int flags, int direct, int quiet)
 	    ((fstat(dev->fd, &buf) < 0) || (buf.st_rdev != dev->dev))) {
 		log_error("%s: fstat failed: Has device name changed?", name);
 		dev_close_immediate(dev);
-		dev->open_count = 0;
 		return 0;
 	}
 
@@ -509,11 +508,9 @@ static int _dev_close(struct device *dev, int immediate)
 	if (dev->open_count > 0)
 		dev->open_count--;
 
-	if (immediate && dev->open_count) {
+	if (immediate && dev->open_count)
 		log_debug("%s: Immediate close attempt while still referenced",
 			  dev_name(dev));
-		dev->open_count = 0;
-	}
 
 	/* Close unless device is known to belong to a locked VG */
 	if (immediate ||

lib/device/device.h

@@ -74,10 +74,8 @@ int dev_close_immediate(struct device *dev);
 void dev_close_all(void);
 int dev_test_excl(struct device *dev);
 
-static inline int dev_fd(struct device *dev)
-{
-	return dev->fd;
-}
+int dev_fd(struct device *dev);
+const char *dev_name(const struct device *dev);
 
 int dev_read(struct device *dev, uint64_t offset, size_t len, void *buffer);
 int dev_write(struct device *dev, uint64_t offset, size_t len, void *buffer);
@@ -88,12 +86,6 @@ void dev_flush(struct device *dev);
 struct device *dev_create_file(const char *filename, struct device *dev,
 			       struct str_list *alias, int use_malloc);
 
-static inline const char *dev_name(const struct device *dev)
-{
-	return (dev) ? list_item(dev->aliases.n, struct str_list)->str :
-	    "unknown device";
-}
-
 /* Return a valid device name from the alias list; NULL otherwise */
 const char *dev_name_confirmed(struct device *dev, int quiet);
 

lib/error/errseg.c

@@ -24,12 +24,12 @@
 #include "lvm-string.h"
 #include "activate.h"
 
-static const char *_name(const struct lv_segment *seg)
+static const char *_errseg_name(const struct lv_segment *seg)
 {
 	return seg->segtype->name;
 }
 
-static int _merge_segments(struct lv_segment *seg1, struct lv_segment *seg2)
+static int _errseg_merge_segments(struct lv_segment *seg1, struct lv_segment *seg2)
 {
 	seg1->len += seg2->len;
 	seg1->area_len += seg2->area_len;
@@ -38,7 +38,7 @@ static int _merge_segments(struct lv_segment *seg1, struct lv_segment *seg2)
 }
 
 #ifdef DEVMAPPER_SUPPORT
-static int _add_target_line(struct dev_manager *dm, struct dm_pool *mem,
+static int _errseg_add_target_line(struct dev_manager *dm, struct dm_pool *mem,
 				struct config_tree *cft, void **target_state,
 				struct lv_segment *seg,
 				struct dm_tree_node *node, uint64_t len,
@@ -47,34 +47,34 @@ static int _add_target_line(struct dev_manager *dm, struct dm_pool *mem,
 	return dm_tree_node_add_error_target(node, len);
 }
 
-static int _target_present(void)
+static int _errseg_target_present(void)
 {
-	static int checked = 0;
-	static int present = 0;
+	static int _errseg_checked = 0;
+	static int _errseg_present = 0;
 
 	/* Reported truncated in older kernels */
-	if (!checked &&
+	if (!_errseg_checked &&
 	    (target_present("error", 0) || target_present("erro", 0)))
-		present = 1;
+		_errseg_present = 1;
 
-	checked = 1;
-	return present;
+	_errseg_checked = 1;
+	return _errseg_present;
 }
 #endif
 
-static void _destroy(const struct segment_type *segtype)
+static void _errseg_destroy(const struct segment_type *segtype)
 {
 	dm_free((void *) segtype);
 }
 
 static struct segtype_handler _error_ops = {
-	name:_name,
-	merge_segments:_merge_segments,
+	name:_errseg_name,
+	merge_segments:_errseg_merge_segments,
 #ifdef DEVMAPPER_SUPPORT
-	add_target_line:_add_target_line,
-	target_present:_target_present,
+	add_target_line:_errseg_add_target_line,
+	target_present:_errseg_target_present,
 #endif
-	destroy:_destroy,
+	destroy:_errseg_destroy,
 };
 
 struct segment_type *init_error_segtype(struct cmd_context *cmd)

lib/filters/filter-composite.c

@@ -33,7 +33,7 @@ static int _and_p(struct dev_filter *f, struct device *dev)
 	return 1;
 }
 
-static void _destroy(struct dev_filter *f)
+static void _composite_destroy(struct dev_filter *f)
 {
 	struct dev_filter **filters = (struct dev_filter **) f->private;
 
@@ -70,7 +70,7 @@ struct dev_filter *composite_filter_create(int n, struct dev_filter **filters)
 	}
 
 	cft->passes_filter = _and_p;
-	cft->destroy = _destroy;
+	cft->destroy = _composite_destroy;
 	cft->private = filters_copy;
 
 	return cft;

lib/filters/filter-persistent.c

@@ -217,7 +217,7 @@ static int _lookup_p(struct dev_filter *f, struct device *dev)
 	return (l == PF_BAD_DEVICE) ? 0 : 1;
 }
 
-static void _destroy(struct dev_filter *f)
+static void _persistent_destroy(struct dev_filter *f)
 {
 	struct pfilter *pf = (struct pfilter *) f->private;
 
@@ -258,7 +258,7 @@ struct dev_filter *persistent_filter_create(struct dev_filter *real,
 	}
 
 	f->passes_filter = _lookup_p;
-	f->destroy = _destroy;
+	f->destroy = _persistent_destroy;
 	f->private = pf;
 
 	return f;

lib/filters/filter-regex.c

@@ -191,7 +191,7 @@ static int _accept_p(struct dev_filter *f, struct device *dev)
 	return !rejected;
 }
 
-static void _destroy(struct dev_filter *f)
+static void _regex_destroy(struct dev_filter *f)
 {
 	struct rfilter *rf = (struct rfilter *) f->private;
 	dm_pool_destroy(rf->mem);
@@ -226,7 +226,7 @@ struct dev_filter *regex_filter_create(struct config_value *patterns)
 	}
 
 	f->passes_filter = _accept_p;
-	f->destroy = _destroy;
+	f->destroy = _regex_destroy;
 	f->private = rf;
 	return f;
 

lib/filters/filter-sysfs.c

@@ -88,7 +88,7 @@ static struct dev_set *_dev_set_create(struct dm_pool *mem, const char *sys_bloc
 	return ds;
 }
 
-static inline unsigned _hash_dev(dev_t dev)
+static unsigned _hash_dev(dev_t dev)
 {
 	return (major(dev) ^ minor(dev)) & (SET_BUCKETS - 1);
 }

lib/format1/disk-rep.c

@@ -223,11 +223,11 @@ static int _read_lvd(struct device *dev, uint64_t pos, struct lv_disk *disk)
 	return 1;
 }
 
-static int _read_vgd(struct disk_list *data)
+int read_vgd(struct device *dev, struct vg_disk *vgd, struct pv_disk *pvd)
 {
-	struct vg_disk *vgd = &data->vgd;
-	uint64_t pos = data->pvd.vg_on_disk.base;
-	if (!dev_read(data->dev, pos, sizeof(*vgd), vgd))
+	uint64_t pos = pvd->vg_on_disk.base;
+
+	if (!dev_read(dev, pos, sizeof(*vgd), vgd))
 		fail;
 
 	_xlate_vgd(vgd);
@@ -269,7 +269,7 @@ static int _read_uuids(struct disk_list *data)
 	return 1;
 }
 
-static inline int _check_lvd(struct lv_disk *lvd)
+static int _check_lvd(struct lv_disk *lvd)
 {
 	return !(lvd->lv_name[0] == '\0');
 }
@@ -319,13 +319,31 @@ static int _read_extents(struct disk_list *data)
 	return 1;
 }
 
+static void __update_lvmcache(const struct format_type *fmt,
+			      struct disk_list *dl,
+			      struct device *dev, const char *vgid,
+			      int exported)
+{
+	struct lvmcache_info *info;
+
+	if (!(info = lvmcache_add(fmt->labeller, dl->pvd.pv_uuid, dev,
+				  dl->pvd.vg_name, vgid,
+				  exported ? EXPORTED_VG : 0))) {
+		stack;
+		return;
+	}
+
+	info->device_size = xlate32(dl->pvd.pv_size) << SECTOR_SHIFT;
+	list_init(&info->mdas);
+	info->status &= ~CACHE_INVALID;
+}
+
 static struct disk_list *__read_disk(const struct format_type *fmt,
 				     struct device *dev, struct dm_pool *mem,
 				     const char *vg_name)
 {
-	struct disk_list *dl = dm_pool_alloc(mem, sizeof(*dl));
+	struct disk_list *dl = dm_pool_zalloc(mem, sizeof(*dl));
 	const char *name = dev_name(dev);
-	struct lvmcache_info *info;
 
 	if (!dl) {
 		stack;
@@ -342,41 +360,32 @@ static struct disk_list *__read_disk(const struct format_type *fmt,
 		goto bad;
 	}
 
-	if (!(info = lvmcache_add(fmt->labeller, dl->pvd.pv_uuid, dev,
-				  dl->pvd.vg_name, NULL)))
-		stack;
-	else {
-		info->device_size = xlate32(dl->pvd.pv_size) << SECTOR_SHIFT;
-		list_init(&info->mdas);
-		info->status &= ~CACHE_INVALID;
-	}
-
 	/*
 	 * is it an orphan ?
 	 */
 	if (!*dl->pvd.vg_name) {
 		log_very_verbose("%s is not a member of any format1 VG", name);
 
-		/* Update VG cache */
-		/* vgcache_add(dl->pvd.vg_name, NULL, dev, fmt); */
-
+		__update_lvmcache(fmt, dl, dev, NULL, 0);
 		return (vg_name) ? NULL : dl;
 	}
 
-	if (!_read_vgd(dl)) {
+	if (!read_vgd(dl->dev, &dl->vgd, &dl->pvd)) {
 		log_error("Failed to read VG data from PV (%s)", name);
+		__update_lvmcache(fmt, dl, dev, NULL, 0);
 		goto bad;
 	}
 
-	/* Update VG cache with what we found */
-	/* vgcache_add(dl->pvd.vg_name, dl->vgd.vg_uuid, dev, fmt); */
-
 	if (vg_name && strcmp(vg_name, dl->pvd.vg_name)) {
 		log_very_verbose("%s is not a member of the VG %s",
 				 name, vg_name);
+		__update_lvmcache(fmt, dl, dev, NULL, 0);
 		goto bad;
 	}
 
+	__update_lvmcache(fmt, dl, dev, dl->vgd.vg_uuid,
+			  dl->vgd.vg_status & VG_EXPORTED);
+
 	if (!_read_uuids(dl)) {
 		log_error("Failed to read PV uuid list from %s", name);
 		goto bad;
@@ -461,7 +470,7 @@ int read_pvs_in_vg(const struct format_type *fmt, const char *vg_name,
 	struct lvmcache_info *info;
 
 	/* Fast path if we already saw this VG and cached the list of PVs */
-	if (vg_name && (vginfo = vginfo_from_vgname(vg_name)) &&
+	if (vg_name && (vginfo = vginfo_from_vgname(vg_name, NULL)) &&
 	    vginfo->infos.n) {
 		list_iterate_items(info, &vginfo->infos) {
 			dev = info->dev;

lib/format1/disk-rep.h

@@ -204,7 +204,8 @@ int write_disks(const struct format_type *fmt, struct list *pvds);
  */
 int import_pv(struct dm_pool *mem, struct device *dev,
 	      struct volume_group *vg,
-	      struct physical_volume *pv, struct pv_disk *pvd);
+	      struct physical_volume *pv, struct pv_disk *pvd,
+	      struct vg_disk *vgd);
 int export_pv(struct cmd_context *cmd, struct dm_pool *mem,
 	      struct volume_group *vg,
 	      struct pv_disk *pvd, struct physical_volume *pv);
@@ -237,6 +238,7 @@ void export_numbers(struct list *pvds, struct volume_group *vg);
 
 void export_pv_act(struct list *pvds);
 int munge_pvd(struct device *dev, struct pv_disk *pvd);
+int read_vgd(struct device *dev, struct vg_disk *vgd, struct pv_disk *pvd);
 
 /* blech */
 int get_free_vg_number(struct format_instance *fid, struct dev_filter *filter,

lib/format1/format1.c

@@ -173,7 +173,7 @@ static struct volume_group *_build_vg(struct format_instance *fid,
 	return NULL;
 }
 
-static struct volume_group *_vg_read(struct format_instance *fid,
+static struct volume_group *_format1_vg_read(struct format_instance *fid,
 				     const char *vg_name,
 				     struct metadata_area *mda)
 {
@@ -264,7 +264,7 @@ static int _flatten_vg(struct format_instance *fid, struct dm_pool *mem,
 	return 1;
 }
 
-static int _vg_write(struct format_instance *fid, struct volume_group *vg,
+static int _format1_vg_write(struct format_instance *fid, struct volume_group *vg,
 		     struct metadata_area *mda)
 {
 	struct dm_pool *mem = dm_pool_create("lvm1 vg_write", 1024 * 10);
@@ -287,7 +287,7 @@ static int _vg_write(struct format_instance *fid, struct volume_group *vg,
 	return r;
 }
 
-static int _pv_read(const struct format_type *fmt, const char *pv_name,
+static int _format1_pv_read(const struct format_type *fmt, const char *pv_name,
 		    struct physical_volume *pv, struct list *mdas)
 {
 	struct dm_pool *mem = dm_pool_create("lvm1 pv_read", 1024);
@@ -312,7 +312,7 @@ static int _pv_read(const struct format_type *fmt, const char *pv_name,
 		goto out;
 	}
 
-	if (!import_pv(fmt->cmd->mem, dl->dev, NULL, pv, &dl->pvd)) {
+	if (!import_pv(fmt->cmd->mem, dl->dev, NULL, pv, &dl->pvd, &dl->vgd)) {
 		stack;
 		goto out;
 	}
@@ -326,7 +326,7 @@ static int _pv_read(const struct format_type *fmt, const char *pv_name,
 	return r;
 }
 
-static int _pv_setup(const struct format_type *fmt,
+static int _format1_pv_setup(const struct format_type *fmt,
 		     uint64_t pe_start, uint32_t extent_count,
 		     uint32_t extent_size,
 		     int pvmetadatacopies,
@@ -364,7 +364,7 @@ static int _pv_setup(const struct format_type *fmt,
 	return 1;
 }
 
-static int _lv_setup(struct format_instance *fid, struct logical_volume *lv)
+static int _format1_lv_setup(struct format_instance *fid, struct logical_volume *lv)
 {
 	uint64_t max_size = UINT_MAX;
 
@@ -386,7 +386,7 @@ static int _lv_setup(struct format_instance *fid, struct logical_volume *lv)
 	return 1;
 }
 
-static int _pv_write(const struct format_type *fmt, struct physical_volume *pv,
+static int _format1_pv_write(const struct format_type *fmt, struct physical_volume *pv,
 		     struct list *mdas, int64_t sector)
 {
 	struct dm_pool *mem;
@@ -396,7 +396,7 @@ static int _pv_write(const struct format_type *fmt, struct physical_volume *pv,
 	struct lvmcache_info *info;
 
 	if (!(info = lvmcache_add(fmt->labeller, (char *) &pv->id, pv->dev,
-				  pv->vg_name, NULL))) {
+				  pv->vg_name, NULL, 0))) {
 		stack;
 		return 0;
 	}
@@ -449,7 +449,7 @@ static int _pv_write(const struct format_type *fmt, struct physical_volume *pv,
 	return 0;
 }
 
-static int _vg_setup(struct format_instance *fid, struct volume_group *vg)
+static int _format1_vg_setup(struct format_instance *fid, struct volume_group *vg)
 {
 	/* just check max_pv and max_lv */
 	if (!vg->max_lv || vg->max_lv >= MAX_LV)
@@ -484,7 +484,7 @@ static int _vg_setup(struct format_instance *fid, struct volume_group *vg)
 	return 1;
 }
 
-static int _segtype_supported (struct format_instance *fid, 
+static int _format1_segtype_supported(struct format_instance *fid, 
 			       struct segment_type *segtype)
 {
 	if (!(segtype->flags & SEG_FORMAT1_SUPPORT)) {
@@ -496,12 +496,13 @@ static int _segtype_supported (struct format_instance *fid,
 }
 
 static struct metadata_area_ops _metadata_format1_ops = {
-	vg_read:_vg_read,
-	vg_write:_vg_write,
+	vg_read:_format1_vg_read,
+	vg_write:_format1_vg_write,
 };
 
-static struct format_instance *_create_instance(const struct format_type *fmt,
+static struct format_instance *_format1_create_instance(const struct format_type *fmt,
 						const char *vgname,
+						const char *vgid,
 						void *private)
 {
 	struct format_instance *fid;
@@ -529,26 +530,26 @@ static struct format_instance *_create_instance(const struct format_type *fmt,
 	return fid;
 }
 
-static void _destroy_instance(struct format_instance *fid)
+static void _format1_destroy_instance(struct format_instance *fid)
 {
 	return;
 }
 
-static void _destroy(const struct format_type *fmt)
+static void _format1_destroy(const struct format_type *fmt)
 {
 	dm_free((void *) fmt);
 }
 
 static struct format_handler _format1_ops = {
-	pv_read:_pv_read,
-	pv_setup:_pv_setup,
-	pv_write:_pv_write,
-	lv_setup:_lv_setup,
-	vg_setup:_vg_setup,
-	segtype_supported:_segtype_supported,
-	create_instance:_create_instance,
-	destroy_instance:_destroy_instance,
-	destroy:_destroy,
+	pv_read:_format1_pv_read,
+	pv_setup:_format1_pv_setup,
+	pv_write:_format1_pv_write,
+	lv_setup:_format1_lv_setup,
+	vg_setup:_format1_vg_setup,
+	segtype_supported:_format1_segtype_supported,
+	create_instance:_format1_create_instance,
+	destroy_instance:_format1_destroy_instance,
+	destroy:_format1_destroy,
 };
 
 #ifdef LVM1_INTERNAL

lib/format1/import-export.c

@@ -49,7 +49,8 @@ static char *_create_lv_name(struct dm_pool *mem, const char *full_name)
 
 int import_pv(struct dm_pool *mem, struct device *dev,
 	      struct volume_group *vg,
-	      struct physical_volume *pv, struct pv_disk *pvd)
+	      struct physical_volume *pv, struct pv_disk *pvd,
+	      struct vg_disk *vgd)
 {
 	memset(pv, 0, sizeof(*pv));
 	memcpy(&pv->id, pvd->pv_uuid, ID_LEN);
@@ -60,6 +61,8 @@ int import_pv(struct dm_pool *mem, struct device *dev,
 		return 0;
 	}
 
+	memcpy(&pv->vgid, vgd->vg_uuid, sizeof(vg->id));
+
 	/* Store system_id from first PV if PV belongs to a VG */
 	if (vg && !*vg->system_id)
 		strncpy(vg->system_id, pvd->system_id, NAME_LEN);
@@ -426,7 +429,7 @@ int import_pvs(const struct format_type *fmt, struct dm_pool *mem,
 			return 0;
 		}
 
-		if (!import_pv(mem, dl->dev, vg, pvl->pv, &dl->pvd)) {
+		if (!import_pv(mem, dl->dev, vg, pvl->pv, &dl->pvd, &dl->vgd)) {
 			stack;
 			return 0;
 		}

lib/format1/import-extents.c

@@ -140,7 +140,12 @@ static int _fill_maps(struct dm_hash_table *maps, struct volume_group *vg,
 				lvm = lvms[lv_num];
 
 				if (!lvm) {
-					log_err("invalid lv in extent map");
+					log_error("Invalid LV in extent map "
+						  "(PV %s, PE %" PRIu32
+						  ", LV %" PRIu32
+						  ", LE %" PRIu32 ")",
+						  dev_name(pv->dev), i,
+						  lv_num, e[i].le_num);
 					return 0;
 				}
 

lib/format1/layout.c

@@ -19,16 +19,18 @@
 /*
  * Only works with powers of 2.
  */
-static inline uint32_t _round_up(uint32_t n, uint32_t size)
+static uint32_t _round_up(uint32_t n, uint32_t size)
 {
 	size--;
 	return (n + size) & ~size;
 }
 
-static inline uint32_t _div_up(uint32_t n, uint32_t size)
+/* Unused.
+static uint32_t _div_up(uint32_t n, uint32_t size)
 {
 	return _round_up(n, size) / size;
 }
+*/
 
 /*
  * Each chunk of metadata should be aligned to

lib/format1/lvm1-label.c

@@ -30,7 +30,7 @@ static void _not_supported(const char *op)
 		op);
 }
 
-static int _can_handle(struct labeller *l, char *buf, uint64_t sector)
+static int _lvm1_can_handle(struct labeller *l, char *buf, uint64_t sector)
 {
 	struct pv_disk *pvd = (struct pv_disk *) buf;
 	uint32_t version;
@@ -48,21 +48,30 @@ static int _can_handle(struct labeller *l, char *buf, uint64_t sector)
 	return 0;
 }
 
-static int _write(struct label *label, char *buf)
+static int _lvm1_write(struct label *label, char *buf)
 {
 	_not_supported("write");
 	return 0;
 }
 
-static int _read(struct labeller *l, struct device *dev, char *buf,
+static int _lvm1_read(struct labeller *l, struct device *dev, char *buf,
 		 struct label **label)
 {
 	struct pv_disk *pvd = (struct pv_disk *) buf;
+	struct vg_disk vgd;
 	struct lvmcache_info *info;
+	const char *vgid = NULL;
+	int exported = 0;
 
 	munge_pvd(dev, pvd);
 
-	if (!(info = lvmcache_add(l, pvd->pv_uuid, dev, pvd->vg_name, NULL))) {
+	if (*pvd->vg_name && read_vgd(dev, &vgd, pvd)) {
+		vgid = vgd.vg_uuid;
+		exported = pvd->pv_status & VG_EXPORTED;
+	}
+
+	if (!(info = lvmcache_add(l, pvd->pv_uuid, dev, pvd->vg_name, vgid,
+				  exported))) {
 		stack;
 		return 0;
 	}
@@ -76,31 +85,31 @@ static int _read(struct labeller *l, struct device *dev, char *buf,
 	return 1;
 }
 
-static int _initialise_label(struct labeller *l, struct label *label)
+static int _lvm1_initialise_label(struct labeller *l, struct label *label)
 {
 	strcpy(label->type, "LVM1");
 
 	return 1;
 }
 
-static void _destroy_label(struct labeller *l, struct label *label)
+static void _lvm1_destroy_label(struct labeller *l, struct label *label)
 {
 	return;
 }
 
-static void _destroy(struct labeller *l)
+static void _lvm1_destroy(struct labeller *l)
 {
 	dm_free(l);
 }
 
 struct label_ops _lvm1_ops = {
-	can_handle:_can_handle,
-	write:_write,
-	read:_read,
-	verify:_can_handle,
-	initialise_label:_initialise_label,
-	destroy_label:_destroy_label,
-	destroy:_destroy
+	can_handle:_lvm1_can_handle,
+	write:_lvm1_write,
+	read:_lvm1_read,
+	verify:_lvm1_can_handle,
+	initialise_label:_lvm1_initialise_label,
+	destroy_label:_lvm1_destroy_label,
+	destroy:_lvm1_destroy
 };
 
 struct labeller *lvm1_labeller_create(struct format_type *fmt)

lib/format_pool/disk_rep.c

@@ -98,7 +98,7 @@ int read_pool_label(struct pool_list *pl, struct labeller *l,
 	log_debug("Calculated uuid %s for %s", uuid, pd->pl_pool_name);
 
 	if (!(info = lvmcache_add(l, (char *) &pvid, dev, pd->pl_pool_name,
-				  (char *) &vgid))) {
+				  (char *) &vgid, 0))) {
 		stack;
 		return 0;
 	}
@@ -314,7 +314,7 @@ int read_pool_pds(const struct format_type *fmt, const char *vg_name,
 		/*
 		 * If the cache scanning doesn't work, this will never work
 		 */
-		if (vg_name && (vginfo = vginfo_from_vgname(vg_name)) &&
+		if (vg_name && (vginfo = vginfo_from_vgname(vg_name, NULL)) &&
 		    vginfo->infos.n) {
 
 			if (_read_vg_pds(fmt, mem, vginfo, pdhead, &totaldevs)) {

lib/format_pool/format_pool.c

@@ -169,7 +169,7 @@ static struct volume_group *_build_vg_from_pds(struct format_instance
 	return vg;
 }
 
-static struct volume_group *_vg_read(struct format_instance *fid,
+static struct volume_group *_pool_vg_read(struct format_instance *fid,
 				     const char *vg_name,
 				     struct metadata_area *mda)
 {
@@ -206,7 +206,7 @@ static struct volume_group *_vg_read(struct format_instance *fid,
 	return vg;
 }
 
-static int _pv_setup(const struct format_type *fmt,
+static int _pool_pv_setup(const struct format_type *fmt,
 		     uint64_t pe_start, uint32_t extent_count,
 		     uint32_t extent_size,
 		     int pvmetadatacopies,
@@ -216,7 +216,7 @@ static int _pv_setup(const struct format_type *fmt,
 	return 1;
 }
 
-static int _pv_read(const struct format_type *fmt, const char *pv_name,
+static int _pool_pv_read(const struct format_type *fmt, const char *pv_name,
 		    struct physical_volume *pv, struct list *mdas)
 {
 	struct dm_pool *mem = dm_pool_create("pool pv_read", 1024);
@@ -262,12 +262,13 @@ static int _pv_read(const struct format_type *fmt, const char *pv_name,
 
 /* *INDENT-OFF* */
 static struct metadata_area_ops _metadata_format_pool_ops = {
-	vg_read:_vg_read,
+	vg_read:_pool_vg_read,
 };
 /* *INDENT-ON* */
 
-static struct format_instance *_create_instance(const struct format_type *fmt,
+static struct format_instance *_pool_create_instance(const struct format_type *fmt,
 						const char *vgname,
+						const char *vgid,
 						void *private)
 {
 	struct format_instance *fid;
@@ -297,23 +298,23 @@ static struct format_instance *_create_instance(const struct format_type *fmt,
 	return fid;
 }
 
-static void _destroy_instance(struct format_instance *fid)
+static void _pool_destroy_instance(struct format_instance *fid)
 {
 	return;
 }
 
-static void _destroy(const struct format_type *fmt)
+static void _pool_destroy(const struct format_type *fmt)
 {
 	dm_free((void *) fmt);
 }
 
 /* *INDENT-OFF* */
 static struct format_handler _format_pool_ops = {
-	pv_read:_pv_read,
-	pv_setup:_pv_setup,
-	create_instance:_create_instance,
-	destroy_instance:_destroy_instance,
-	destroy:_destroy,
+	pv_read:_pool_pv_read,
+	pv_setup:_pool_pv_setup,
+	create_instance:_pool_create_instance,
+	destroy_instance:_pool_destroy_instance,
+	destroy:_pool_destroy,
 };
 /* *INDENT-ON */
 

lib/format_pool/import_export.c

@@ -165,6 +165,7 @@ int import_pool_pv(const struct format_type *fmt, struct dm_pool *mem,
 		log_error("Unable to duplicate vg_name string");
 		return 0;
 	}
+	memcpy(&pv->vgid, &vg->id, sizeof(vg->id));
 	pv->status = 0;
 	pv->size = pd->pl_blocks;
 	pv->pe_size = POOL_PE_SIZE;

lib/format_pool/pool_label.c

@@ -23,13 +23,13 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
-static void _not_supported(const char *op)
+static void _pool_not_supported(const char *op)
 {
 	log_error("The '%s' operation is not supported for the pool labeller.",
 		  op);
 }
 
-static int _can_handle(struct labeller *l, char *buf, uint64_t sector)
+static int _pool_can_handle(struct labeller *l, char *buf, uint64_t sector)
 {
 
 	struct pool_disk pd;
@@ -50,13 +50,13 @@ static int _can_handle(struct labeller *l, char *buf, uint64_t sector)
 	return 0;
 }
 
-static int _write(struct label *label, char *buf)
+static int _pool_write(struct label *label, char *buf)
 {
-	_not_supported("write");
+	_pool_not_supported("write");
 	return 0;
 }
 
-static int _read(struct labeller *l, struct device *dev, char *buf,
+static int _pool_read(struct labeller *l, struct device *dev, char *buf,
 		 struct label **label)
 {
 	struct pool_list pl;
@@ -64,31 +64,31 @@ static int _read(struct labeller *l, struct device *dev, char *buf,
 	return read_pool_label(&pl, l, dev, buf, label);
 }
 
-static int _initialise_label(struct labeller *l, struct label *label)
+static int _pool_initialise_label(struct labeller *l, struct label *label)
 {
 	strcpy(label->type, "POOL");
 
 	return 1;
 }
 
-static void _destroy_label(struct labeller *l, struct label *label)
+static void _pool_destroy_label(struct labeller *l, struct label *label)
 {
 	return;
 }
 
-static void _destroy(struct labeller *l)
+static void _label_pool_destroy(struct labeller *l)
 {
 	dm_free(l);
 }
 
 struct label_ops _pool_ops = {
-      can_handle:_can_handle,
-      write:_write,
-      read:_read,
-      verify:_can_handle,
-      initialise_label:_initialise_label,
-      destroy_label:_destroy_label,
-      destroy:_destroy
+      can_handle:_pool_can_handle,
+      write:_pool_write,
+      read:_pool_read,
+      verify:_pool_can_handle,
+      initialise_label:_pool_initialise_label,
+      destroy_label:_pool_destroy_label,
+      destroy:_label_pool_destroy
 };
 
 struct labeller *pool_labeller_create(struct format_type *fmt)

lib/format_text/archive.c

@@ -87,7 +87,7 @@ static int _split_vg(const char *filename, char *vgname, size_t vg_size,
 	return 1;
 }
 
-static void _insert_file(struct list *head, struct archive_file *b)
+static void _insert_archive_file(struct list *head, struct archive_file *b)
 {
 	struct archive_file *bf = NULL;
 
@@ -107,7 +107,7 @@ static void _insert_file(struct list *head, struct archive_file *b)
 	list_add_h(&bf->list, &b->list);
 }
 
-static char *_join(struct dm_pool *mem, const char *dir, const char *name)
+static char *_join_file_to_dir(struct dm_pool *mem, const char *dir, const char *name)
 {
 	if (!dm_pool_begin_object(mem, 32) ||
 	    !dm_pool_grow_object(mem, dir, strlen(dir)) ||
@@ -161,7 +161,7 @@ static struct list *_scan_archive(struct dm_pool *mem,
 		if (strcmp(vgname, vgname_found))
 			continue;
 
-		if (!(path = _join(mem, dir, dirent[i]->d_name))) {
+		if (!(path = _join_file_to_dir(mem, dir, dirent[i]->d_name))) {
 			stack;
 			goto out;
 		}
@@ -181,7 +181,7 @@ static struct list *_scan_archive(struct dm_pool *mem,
 		/*
 		 * Insert it to the correct part of the list.
 		 */
-		_insert_file(results, af);
+		_insert_archive_file(results, af);
 	}
 
       out:
@@ -207,8 +207,8 @@ static void _remove_expired(struct list *archives, uint32_t archives_size,
 	/* Convert retain_days into the time after which we must retain */
 	retain_time = time(NULL) - (time_t) retain_days *SECS_PER_DAY;
 
-	/* Assume list is ordered oldest first (by index) */
-	list_iterate_items(bf, archives) {
+	/* Assume list is ordered newest first (by index) */
+	list_iterate_back_items(bf, archives) {
 		/* Get the mtime of the file and unlink if too old */
 		if (stat(bf->path, &sb)) {
 			log_sys_error("stat", bf->path);
@@ -311,7 +311,7 @@ static void _display_archive(struct cmd_context *cmd, struct archive_file *af)
 
 	if (!(context = create_text_context(cmd, af->path, NULL)) ||
 	    !(tf = cmd->fmt_backup->ops->create_instance(cmd->fmt_backup, NULL,
-							 context))) {
+							 NULL, context))) {
 		log_error("Couldn't create text instance object.");
 		return;
 	}
@@ -360,7 +360,7 @@ int backup_list(struct cmd_context *cmd, const char *dir, const char *vgname)
 {
 	struct archive_file af;
 
-	if (!(af.path = _join(cmd->mem, dir, vgname))) {
+	if (!(af.path = _join_file_to_dir(cmd->mem, dir, vgname))) {
 		stack;
 		return 0;
 	}

lib/format_text/archiver.c

@@ -257,7 +257,7 @@ struct volume_group *backup_read_vg(struct cmd_context *cmd,
 	if (!(context = create_text_context(cmd, file,
 					    cmd->cmd_line)) ||
 	    !(tf = cmd->fmt_backup->ops->create_instance(cmd->fmt_backup, NULL,
-							 context))) {
+							 NULL, context))) {
 		log_error("Couldn't create text format object.");
 		return NULL;
 	}
@@ -286,7 +286,7 @@ int backup_restore_vg(struct cmd_context *cmd, struct volume_group *vg)
 
 	/* Attempt to write out using currently active format */
 	if (!(vg->fid = cmd->fmt->ops->create_instance(cmd->fmt, vg->name,
-						       NULL))) {
+						       NULL, NULL))) {
 		log_error("Failed to allocate format instance");
 		return 0;
 	}
@@ -365,7 +365,7 @@ int backup_to_file(const char *file, const char *desc, struct volume_group *vg)
 
 	if (!(context = create_text_context(cmd, file, desc)) ||
 	    !(tf = cmd->fmt_backup->ops->create_instance(cmd->fmt_backup, NULL,
-							 context))) {
+							 NULL, context))) {
 		log_error("Couldn't create backup object.");
 		return 0;
 	}

lib/format_text/export.c

@@ -354,8 +354,7 @@ static int _print_vg(struct formatter *f, struct volume_group *vg)
  * Get the pv%d name from the formatters hash
  * table.
  */
-static inline const char *_get_pv_name(struct formatter *f,
-				       struct physical_volume *pv)
+static const char *_get_pv_name(struct formatter *f, struct physical_volume *pv)
 {
 	return (pv) ? (const char *)
 	    dm_hash_lookup(f->pv_names, dev_name(pv->dev)) : "Missing";

lib/format_text/format-text.c

@@ -39,8 +39,9 @@
 #define FMT_TEXT_NAME "lvm2"
 #define FMT_TEXT_ALIAS "text"
 
-static struct format_instance *_create_text_instance(const struct format_type
+static struct format_instance *_text_create_text_instance(const struct format_type
 						     *fmt, const char *vgname,
+						     const char *vgid,
 						     void *context);
 
 struct text_fid_context {
@@ -68,7 +69,7 @@ struct text_context {
  * NOTE: Currently there can be only one vg per text file.
  */
 
-static int _vg_setup(struct format_instance *fid, struct volume_group *vg)
+static int _text_vg_setup(struct format_instance *fid, struct volume_group *vg)
 {
 	if (vg->extent_size & (vg->extent_size - 1)) {
 		log_error("Extent size must be power of 2");
@@ -78,7 +79,7 @@ static int _vg_setup(struct format_instance *fid, struct volume_group *vg)
 	return 1;
 }
 
-static int _lv_setup(struct format_instance *fid, struct logical_volume *lv)
+static int _text_lv_setup(struct format_instance *fid, struct logical_volume *lv)
 {
 /******** FIXME Any LV size restriction? 
 	uint64_t max_size = UINT_MAX;
@@ -219,7 +220,7 @@ static struct raw_locn *_find_vg_rlocn(struct device_area *dev_area,
 
       error:
 	if ((info = info_from_pvid(dev_area->dev->pvid)))
-		lvmcache_update_vgname(info, ORPHAN);
+		lvmcache_update_vgname_and_id(info, ORPHAN, ORPHAN, 0, NULL);
 
 	return NULL;
 }
@@ -858,9 +859,11 @@ static int _scan_file(const struct format_type *fmt)
 				}
 
 				/* FIXME stat file to see if it's changed */
-				fid = _create_text_instance(fmt, NULL, NULL);
+				fid = _text_create_text_instance(fmt, NULL, NULL,
+							    NULL);
 				if ((vg = _vg_read_file_name(fid, vgname,
 							     path)))
+					/* FIXME Store creation host in vg */
 					lvmcache_update_vg(vg);
 			}
 
@@ -871,65 +874,92 @@ static int _scan_file(const struct format_type *fmt)
 	return 1;
 }
 
-int vgname_from_mda(const struct format_type *fmt, struct device_area *dev_area,
-		    char *buf, uint32_t size)
+const char *vgname_from_mda(const struct format_type *fmt,
+			    struct device_area *dev_area, struct id *vgid,
+			    uint32_t *vgstatus, char **creation_host)
 {
 	struct raw_locn *rlocn;
 	struct mda_header *mdah;
-	unsigned int len;
-	int r = 0;
+	uint32_t wrap = 0;
+	const char *vgname = NULL;
+	unsigned int len = 0;
+	char buf[NAME_LEN + 1];
 
 	if (!dev_open(dev_area->dev)) {
 		stack;
-		return 0;
+		return NULL;
 	}
 
-	if (!(mdah = _raw_read_mda_header(fmt, dev_area))) {
-		stack;
+	if (!(mdah = _raw_read_mda_header(fmt, dev_area)))
+		goto_out;
+
+	/* FIXME Cope with returning a list */
+	rlocn = mdah->raw_locns;
+
+	/* Do quick check for a vgname */
+	if (!dev_read(dev_area->dev, dev_area->start + rlocn->offset,
+		      NAME_LEN, buf))
+		goto_out;
+
+	while (buf[len] && !isspace(buf[len]) && buf[len] != '{' &&
+	       len < (NAME_LEN - 1))
+		len++;
+
+	buf[len] = '\0';
+
+	/* Ignore this entry if the characters aren't permissible */
+	if (!validate_name(buf))
+		goto_out;
+
+	/* We found a VG - now check the metadata */
+	if (rlocn->offset + rlocn->size > mdah->size)
+		wrap = (uint32_t) ((rlocn->offset + rlocn->size) - mdah->size);
+
+	if (wrap > rlocn->offset) {
+		log_error("%s: metadata too large for circular buffer",
+			  dev_name(dev_area->dev));
 		goto out;
 	}
 
-	rlocn = mdah->raw_locns;
+	/* FIXME 64-bit */
+	if (!(vgname = text_vgname_import(fmt, dev_area->dev,
+					  (off_t) (dev_area->start +
+						   rlocn->offset),
+					  (uint32_t) (rlocn->size - wrap),
+					  (off_t) (dev_area->start +
+						   MDA_HEADER_SIZE),
+					  wrap, calc_crc, rlocn->checksum,
+					  vgid, vgstatus, creation_host)))
+		goto_out;
 
-	while (rlocn->offset) {
-		if (!dev_read(dev_area->dev, dev_area->start + rlocn->offset,
-			      size, buf)) {
-			stack;
-			goto out;
-		}
-		len = 0;
-		while (buf[len] && !isspace(buf[len]) && buf[len] != '{' &&
-		       len < (size - 1))
-			len++;
-		buf[len] = '\0';
-
-		/* Ignore this entry if the characters aren't permissible */
-		if (!validate_name(buf)) {
-			stack;
-			goto out;
-		}
-
-		r = 1;
-		break;
-
-		/* FIXME Cope with returning a list */
-		rlocn++;
+	/* Ignore this entry if the characters aren't permissible */
+	if (!validate_name(vgname)) {
+		stack;
+		vgname = NULL;
+		goto out;
 	}
 
+	log_debug("%s: Found metadata at %" PRIu64 " size %" PRIu64
+		  " for %s (%s)", 
+		  dev_name(dev_area->dev), dev_area->start + rlocn->offset,
+		  rlocn->size, vgname, vgid->uuid);
+
       out:
 	if (!dev_close(dev_area->dev))
 		stack;
 
-	return r;
+	return vgname;
 }
 
 static int _scan_raw(const struct format_type *fmt)
 {
 	struct raw_list *rl;
 	struct list *raw_list;
-	char vgnamebuf[NAME_LEN + 2];
+	const char *vgname;
 	struct volume_group *vg;
 	struct format_instance fid;
+	struct id vgid;
+	uint32_t vgstatus;
 
 	raw_list = &((struct mda_lists *) fmt->private)->raws;
 
@@ -938,9 +968,9 @@ static int _scan_raw(const struct format_type *fmt)
 
 	list_iterate_items(rl, raw_list) {
 		/* FIXME We're reading mdah twice here... */
-		if (vgname_from_mda(fmt, &rl->dev_area, vgnamebuf,
-				    sizeof(vgnamebuf))) {
-			if ((vg = _vg_read_raw_area(&fid, vgnamebuf,
+		if ((vgname = vgname_from_mda(fmt, &rl->dev_area, &vgid, &vgstatus,
+					      NULL))) {
+			if ((vg = _vg_read_raw_area(&fid, vgname,
 						    &rl->dev_area, 0)))
 				lvmcache_update_vg(vg);
 		}
@@ -949,7 +979,7 @@ static int _scan_raw(const struct format_type *fmt)
 	return 1;
 }
 
-static int _scan(const struct format_type *fmt)
+static int _text_scan(const struct format_type *fmt)
 {
 	return (_scan_file(fmt) & _scan_raw(fmt));
 }
@@ -1095,7 +1125,7 @@ static int _mda_setup(const struct format_type *fmt,
 
 /* Only for orphans */
 /* Set label_sector to -1 if rewriting existing label into same sector */
-static int _pv_write(const struct format_type *fmt, struct physical_volume *pv,
+static int _text_pv_write(const struct format_type *fmt, struct physical_volume *pv,
 		     struct list *mdas, int64_t label_sector)
 {
 	struct label *label;
@@ -1109,7 +1139,7 @@ static int _pv_write(const struct format_type *fmt, struct physical_volume *pv,
 	/* FIXME Test mode don't update cache? */
 
 	if (!(info = lvmcache_add(fmt->labeller, (char *) &pv->id, pv->dev,
-				  ORPHAN, NULL))) {
+				  ORPHAN, NULL, 0))) {
 		stack;
 		return 0;
 	}
@@ -1220,7 +1250,7 @@ static int _add_raw(struct list *raw_list, struct device_area *dev_area)
 	return 1;
 }
 
-static int _pv_read(const struct format_type *fmt, const char *pv_name,
+static int _text_pv_read(const struct format_type *fmt, const char *pv_name,
 		    struct physical_volume *pv, struct list *mdas)
 {
 	struct label *label;
@@ -1245,7 +1275,7 @@ static int _pv_read(const struct format_type *fmt, const char *pv_name,
 	/* Have we already cached vgname? */
 	if (info->vginfo && info->vginfo->vgname && *info->vginfo->vgname &&
 	    get_pv_from_vg_by_id(info->fmt, info->vginfo->vgname,
-				 info->dev->pvid, pv)) {
+				 info->vginfo->vgid, info->dev->pvid, pv)) {
 		return 1;
 	}
 
@@ -1256,6 +1286,7 @@ static int _pv_read(const struct format_type *fmt, const char *pv_name,
 		if (info->vginfo && info->vginfo->vgname &&
 		    *info->vginfo->vgname &&
 		    get_pv_from_vg_by_id(info->fmt, info->vginfo->vgname,
+					 info->vginfo->vgid,
 					 info->dev->pvid, pv)) {
 			return 1;
 		}
@@ -1301,7 +1332,7 @@ static int _pv_read(const struct format_type *fmt, const char *pv_name,
 	return 1;
 }
 
-static void _destroy_instance(struct format_instance *fid)
+static void _text_destroy_instance(struct format_instance *fid)
 {
 	return;
 }
@@ -1326,7 +1357,7 @@ static void _free_raws(struct list *raw_list)
 	}
 }
 
-static void _destroy(const struct format_type *fmt)
+static void _text_destroy(const struct format_type *fmt)
 {
 	if (fmt->private) {
 		_free_dirs(&((struct mda_lists *) fmt->private)->dirs);
@@ -1363,7 +1394,7 @@ static struct metadata_area_ops _metadata_text_raw_ops = {
 };
 
 /* pvmetadatasize in sectors */
-static int _pv_setup(const struct format_type *fmt,
+static int _text_pv_setup(const struct format_type *fmt,
 		     uint64_t pe_start, uint32_t extent_count,
 		     uint32_t extent_size,
 		     int pvmetadatacopies,
@@ -1380,7 +1411,7 @@ static int _pv_setup(const struct format_type *fmt,
 	/* FIXME if vg, adjust start/end of pe area to avoid mdas! */
 
 	/* FIXME Cope with pvchange */
-	/* FIXME Merge code with _create_text_instance */
+	/* FIXME Merge code with _text_create_text_instance */
 
 	/* If new vg, add any further mdas on this PV to the fid's mda list */
 	if (vg) {
@@ -1448,8 +1479,9 @@ static int _pv_setup(const struct format_type *fmt,
 }
 
 /* NULL vgname means use only the supplied context e.g. an archive file */
-static struct format_instance *_create_text_instance(const struct format_type
+static struct format_instance *_text_create_text_instance(const struct format_type
 						     *fmt, const char *vgname,
+						     const char *vgid,
 						     void *context)
 {
 	struct format_instance *fid;
@@ -1535,7 +1567,7 @@ static struct format_instance *_create_text_instance(const struct format_type
 
 		/* Scan PVs in VG for any further MDAs */
 		lvmcache_label_scan(fmt->cmd, 0);
-		if (!(vginfo = vginfo_from_vgname(vgname))) {
+		if (!(vginfo = vginfo_from_vgname(vgname, vgid))) {
 			stack;
 			goto out;
 		}
@@ -1569,7 +1601,6 @@ static struct format_instance *_create_text_instance(const struct format_type
 
       out:
 	return fid;
-
 }
 
 void *create_text_context(struct cmd_context *cmd, const char *path,
@@ -1618,15 +1649,15 @@ void *create_text_context(struct cmd_context *cmd, const char *path,
 }
 
 static struct format_handler _text_handler = {
-	scan:_scan,
-	pv_read:_pv_read,
-	pv_setup:_pv_setup,
-	pv_write:_pv_write,
-	vg_setup:_vg_setup,
-	lv_setup:_lv_setup,
-	create_instance:_create_text_instance,
-	destroy_instance:_destroy_instance,
-	destroy:_destroy
+	scan:_text_scan,
+	pv_read:_text_pv_read,
+	pv_setup:_text_pv_setup,
+	pv_write:_text_pv_write,
+	vg_setup:_text_vg_setup,
+	lv_setup:_text_lv_setup,
+	create_instance:_text_create_text_instance,
+	destroy_instance:_text_destroy_instance,
+	destroy:_text_destroy
 };
 
 static int _add_dir(const char *dir, struct list *dir_list)

lib/format_text/format-text.h

@@ -54,7 +54,8 @@ int add_mda(const struct format_type *fmt, struct dm_pool *mem, struct list *mda
 	    struct device *dev, uint64_t start, uint64_t size);
 void del_mdas(struct list *mdas);
 
-int vgname_from_mda(const struct format_type *fmt, struct device_area *dev_area,
-		    char *buf, uint32_t size);
+const char *vgname_from_mda(const struct format_type *fmt,
+			    struct device_area *dev_area, struct id *vgid,
+			    uint32_t *vgstatus, char **creation_host);
 
 #endif

lib/format_text/import-export.h

@@ -47,6 +47,10 @@ struct text_vg_version_ops {
 					 struct config_tree * cf);
 	void (*read_desc) (struct dm_pool * mem, struct config_tree * cf,
 			   time_t *when, char **desc);
+	const char *(*read_vgname) (const struct format_type *fmt,
+				    struct config_tree *cft,
+				    struct id *vgid, uint32_t *vgstatus,
+				    char **creation_host);
 };
 
 struct text_vg_version_ops *text_vg_vsn1_init(void);
@@ -70,5 +74,12 @@ struct volume_group *text_vg_import_fd(struct format_instance *fid,
 				       checksum_fn_t checksum_fn,
 				       uint32_t checksum,
 				       time_t *when, char **desc);
+const char *text_vgname_import(const struct format_type *fmt,
+			       struct device *dev,
+                               off_t offset, uint32_t size,
+                               off_t offset2, uint32_t size2,
+                               checksum_fn_t checksum_fn, uint32_t checksum,
+                               struct id *vgid, uint32_t *vgstatus,
+			       char **creation_host);
 
 #endif

lib/format_text/import.c

@@ -23,6 +23,53 @@
 /* FIXME Use tidier inclusion method */
 static struct text_vg_version_ops *(_text_vsn_list[2]);
 
+const char *text_vgname_import(const struct format_type *fmt,
+			       struct device *dev,
+			       off_t offset, uint32_t size,
+			       off_t offset2, uint32_t size2,
+			       checksum_fn_t checksum_fn, uint32_t checksum,
+			       struct id *vgid, uint32_t *vgstatus,
+			       char **creation_host)
+{
+	struct config_tree *cft;
+	struct text_vg_version_ops **vsn;
+	const char *vgname;
+
+	static int _text_import_initialised = 0;
+
+	if (!_text_import_initialised) {
+		_text_vsn_list[0] = text_vg_vsn1_init();
+		_text_vsn_list[1] = NULL;
+		_text_import_initialised = 1;
+	}
+
+	if (!(cft = create_config_tree(NULL)))
+		goto_out;
+
+	if ((!dev && !read_config_file(cft)) ||
+	    (dev && !read_config_fd(cft, dev, offset, size,
+				    offset2, size2, checksum_fn, checksum)))
+		goto_out;
+
+	/* 
+	 * Find a set of version functions that can read this file
+	 */
+	for (vsn = &_text_vsn_list[0]; *vsn; vsn++) {
+		if (!(*vsn)->check_version(cft))
+			continue;
+
+		if (!(vgname = (*vsn)->read_vgname(fmt, cft, vgid, vgstatus,
+						   creation_host)))
+			goto_out;
+
+		break;
+	}
+
+      out:
+	destroy_config_tree(cft);
+	return vgname;
+}
+
 struct volume_group *text_vg_import_fd(struct format_instance *fid,
 				       const char *file,
 				       struct device *dev,
@@ -36,12 +83,12 @@ struct volume_group *text_vg_import_fd(struct format_instance *fid,
 	struct config_tree *cft;
 	struct text_vg_version_ops **vsn;
 
-	static int _initialised = 0;
+	static int _text_vg_import_initialised = 0;
 
-	if (!_initialised) {
+	if (!_text_vg_import_initialised) {
 		_text_vsn_list[0] = text_vg_vsn1_init();
 		_text_vsn_list[1] = NULL;
-		_initialised = 1;
+		_text_vg_import_initialised = 1;
 	}
 
 	*desc = NULL;

lib/format_text/import_vsn1.c

@@ -167,6 +167,8 @@ static int _read_pv(struct format_instance *fid, struct dm_pool *mem,
 		return 0;
 	}
 
+	memcpy(&pv->vgid, &vg->id, sizeof(vg->id));
+
 	if (!(cn = find_config_node(pvn, "status"))) {
 		log_error("Couldn't find status flags for physical volume.");
 		return 0;
@@ -798,10 +800,59 @@ static void _read_desc(struct dm_pool *mem,
 	*when = u;
 }
 
+static const char *_read_vgname(const struct format_type *fmt,
+				struct config_tree *cft, struct id *vgid,
+				uint32_t *vgstatus, char **creation_host)
+{
+	struct config_node *vgn, *cn;
+	struct dm_pool *mem = fmt->cmd->mem;
+	char *vgname;
+	int old_suppress;
+
+	old_suppress = log_suppress(2);
+	*creation_host = dm_pool_strdup(mem,
+					find_config_str(cft->root,
+						        "creation_host", ""));
+	log_suppress(old_suppress);
+
+	/* skip any top-level values */
+	for (vgn = cft->root; (vgn && vgn->v); vgn = vgn->sib) ;
+
+	if (!vgn) {
+		log_error("Couldn't find volume group in file.");
+		return 0;
+	}
+
+	if (!(vgname = dm_pool_strdup(mem, vgn->key)))
+		return_0;
+
+	vgn = vgn->child;
+
+	if (!_read_id(vgid, vgn, "id")) {
+		log_error("Couldn't read uuid for volume group %s.", vgname);
+		return 0;
+	}
+
+	if (!(cn = find_config_node(vgn, "status"))) {
+		log_error("Couldn't find status flags for volume group %s.",
+			  vgname);
+		return 0;
+	}
+
+	if (!(read_flags(vgstatus, VG_FLAGS, cn->v))) {
+		log_error("Couldn't read status flags for volume group %s.",
+			  vgname);
+		return 0;
+	}
+
+	return vgname;
+}
+
 static struct text_vg_version_ops _vsn1_ops = {
 	check_version:_check_version,
 	read_vg:_read_vg,
-	read_desc:_read_desc
+	read_desc:_read_desc,
+	read_vgname:_read_vgname
 };
 
 struct text_vg_version_ops *text_vg_vsn1_init(void)

lib/format_text/text_label.c

@@ -23,7 +23,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
-static int _can_handle(struct labeller *l, char *buf, uint64_t sector)
+static int _text_can_handle(struct labeller *l, char *buf, uint64_t sector)
 {
 	struct label_header *lh = (struct label_header *) buf;
 
@@ -33,7 +33,7 @@ static int _can_handle(struct labeller *l, char *buf, uint64_t sector)
 	return 0;
 }
 
-static int _write(struct label *label, char *buf)
+static int _text_write(struct label *label, char *buf)
 {
 	struct label_header *lh = (struct label_header *) buf;
 	struct pv_header *pvhdr;
@@ -179,14 +179,14 @@ void del_mdas(struct list *mdas)
 	}
 }
 
-static int _initialise_label(struct labeller *l, struct label *label)
+static int _text_initialise_label(struct labeller *l, struct label *label)
 {
 	strncpy(label->type, LVM2_LABEL, sizeof(label->type));
 
 	return 1;
 }
 
-static int _read(struct labeller *l, struct device *dev, char *buf,
+static int _text_read(struct labeller *l, struct device *dev, char *buf,
 		 struct label **label)
 {
 	struct label_header *lh = (struct label_header *) buf;
@@ -195,13 +195,16 @@ static int _read(struct labeller *l, struct device *dev, char *buf,
 	struct disk_locn *dlocn_xl;
 	uint64_t offset;
 	struct metadata_area *mda;
-	char vgnamebuf[NAME_LEN + 2];
+	struct id vgid;
 	struct mda_context *mdac;
+	const char *vgname;
+	uint32_t vgstatus;
+	char *creation_host;
 
 	pvhdr = (struct pv_header *) ((void *) buf + xlate32(lh->offset_xl));
 
-	if (!(info = lvmcache_add(l, pvhdr->pv_uuid, dev, NULL, NULL)))
-		return 0;
+	if (!(info = lvmcache_add(l, pvhdr->pv_uuid, dev, NULL, NULL, 0)))
+		return_0;
 	*label = info->label;
 
 	info->device_size = xlate64(pvhdr->device_size_xl);
@@ -232,10 +235,12 @@ static int _read(struct labeller *l, struct device *dev, char *buf,
 
 	list_iterate_items(mda, &info->mdas) {
 		mdac = (struct mda_context *) mda->metadata_locn;
-		if (vgname_from_mda(info->fmt, &mdac->area, vgnamebuf,
-				    sizeof(vgnamebuf))) {
-			lvmcache_update_vgname(info, vgnamebuf);
-		}
+		if ((vgname = vgname_from_mda(info->fmt, &mdac->area, 
+					      &vgid, &vgstatus, &creation_host)) &&
+		    !lvmcache_update_vgname_and_id(info, vgname,
+						   (char *) &vgid, vgstatus,
+						   creation_host))
+			return_0;
 	}
 
 	info->status &= ~CACHE_INVALID;
@@ -243,7 +248,7 @@ static int _read(struct labeller *l, struct device *dev, char *buf,
 	return 1;
 }
 
-static void _destroy_label(struct labeller *l, struct label *label)
+static void _text_destroy_label(struct labeller *l, struct label *label)
 {
 	struct lvmcache_info *info = (struct lvmcache_info *) label->info;
 
@@ -253,19 +258,19 @@ static void _destroy_label(struct labeller *l, struct label *label)
 		del_das(&info->das);
 }
 
-static void _destroy(struct labeller *l)
+static void _fmt_text_destroy(struct labeller *l)
 {
 	dm_free(l);
 }
 
 struct label_ops _text_ops = {
-	can_handle:_can_handle,
-	write:_write,
-	read:_read,
-	verify:_can_handle,
-	initialise_label:_initialise_label,
-	destroy_label:_destroy_label,
-	destroy:_destroy
+	can_handle:_text_can_handle,
+	write:_text_write,
+	read:_text_read,
+	verify:_text_can_handle,
+	initialise_label:_text_initialise_label,
+	destroy_label:_text_destroy_label,
+	destroy:_fmt_text_destroy
 };
 
 struct labeller *text_labeller_create(const struct format_type *fmt)

lib/label/label.c

@@ -117,15 +117,6 @@ static struct labeller *_find_labeller(struct device *dev, char *buf,
 	int found = 0;
 	char readbuf[LABEL_SCAN_SIZE];
 
-	if (!dev_open(dev)) {
-		stack;
-
-		if ((info = info_from_pvid(dev->pvid)))
-			lvmcache_update_vgname(info, ORPHAN);
-
-		return NULL;
-	}
-
 	if (!dev_read(dev, UINT64_C(0), LABEL_SCAN_SIZE, readbuf)) {
 		log_debug("%s: Failed to read label area", dev_name(dev));
 		goto out;
@@ -184,13 +175,11 @@ static struct labeller *_find_labeller(struct device *dev, char *buf,
       out:
 	if (!found) {
 		if ((info = info_from_pvid(dev->pvid)))
-			lvmcache_update_vgname(info, ORPHAN);
+			lvmcache_update_vgname_and_id(info, ORPHAN, ORPHAN,
+						      0, NULL);
 		log_very_verbose("%s: No label detected", dev_name(dev));
 	}
 
-	if (!dev_close(dev))
-		stack;
-
 	return r;
 }
 
@@ -272,16 +261,29 @@ int label_read(struct device *dev, struct label **result)
 	char buf[LABEL_SIZE];
 	struct labeller *l;
 	uint64_t sector;
-	int r;
+	struct lvmcache_info *info;
+	int r = 0;
 
-	if (!(l = _find_labeller(dev, buf, &sector))) {
+	if (!dev_open(dev)) {
 		stack;
-		return 0;
+
+		if ((info = info_from_pvid(dev->pvid)))
+			lvmcache_update_vgname_and_id(info, ORPHAN, ORPHAN,
+						      0, NULL);
+
+		goto out;
 	}
 
+	if (!(l = _find_labeller(dev, buf, &sector)))
+		goto_out;
+
 	if ((r = (l->ops->read)(l, dev, buf, result)) && result && *result)
 		(*result)->sector = sector;
 
+      out:
+	if (!dev_close(dev))
+		stack;
+
 	return r;
 }
 
@@ -335,18 +337,35 @@ int label_write(struct device *dev, struct label *label)
 	return r;
 }
 
+/* Unused */
 int label_verify(struct device *dev)
 {
 	struct labeller *l;
 	char buf[LABEL_SIZE];
 	uint64_t sector;
+	struct lvmcache_info *info;
+	int r = 0;
 
-	if (!(l = _find_labeller(dev, buf, &sector))) {
+	if (!dev_open(dev)) {
 		stack;
-		return 0;
+
+		if ((info = info_from_pvid(dev->pvid)))
+			lvmcache_update_vgname_and_id(info, ORPHAN, ORPHAN,
+						      0, NULL);
+
+		goto out;
 	}
 
-	return ((l->ops->verify) ? l->ops->verify(l, buf, sector) : 1);
+	if (!(l = _find_labeller(dev, buf, &sector)))
+		goto_out;
+
+	r = l->ops->verify ? l->ops->verify(l, buf, sector) : 1;
+
+      out:
+	if (!dev_close(dev))
+		stack;
+
+	return r;
 }
 
 void label_destroy(struct label *label)

lib/locking/cluster_locking.c

@@ -330,6 +330,9 @@ static int _lock_for_cluster(unsigned char cmd, unsigned int flags, char *name)
 	args[0] = flags & 0x7F; /* Maskoff lock flags */
 	args[1] = flags & 0xC0; /* Bitmap flags */
 
+	if (partial_mode())
+		args[1] |= LCK_PARTIAL_MODE;
+
 	/*
 	 * VG locks are just that: locks, and have no side effects
 	 * so we only need to do them on the local node because all

lib/locking/external_locking.c

@@ -72,7 +72,7 @@ int init_external_locking(struct locking_type *locking, struct config_tree *cft)
 	libname = find_config_str(cft->root, "global/locking_library",
 				  DEFAULT_LOCKING_LIB);
 
-	if (!(_locking_lib = load_shared_library(cft, libname, "locking"))) {
+	if (!(_locking_lib = load_shared_library(cft, libname, "locking", 1))) {
 		stack;
 		return 0;
 	}

lib/locking/locking.c

@@ -102,7 +102,7 @@ void reset_locking(void)
 		_unblock_signals();
 }
 
-static inline void _update_vg_lock_count(int flags)
+static void _update_vg_lock_count(int flags)
 {
 	if ((flags & LCK_SCOPE_MASK) != LCK_VG)
 		return;

lib/locking/locking.h

@@ -67,6 +67,11 @@ int check_lvm1_vg_inactive(struct cmd_context *cmd, const char *vgname);
 #define LCK_LOCAL	0x00000040	/* Don't propagate to other nodes */
 #define LCK_CLUSTER_VG	0x00000080	/* VG is clustered */
 
+/*
+ * Additional lock bits for cluster communication
+ */
+#define LCK_PARTIAL_MODE	0x00000001	/* Running in partial mode */
+
 /*
  * Common combinations
  */

lib/log/log.c

@@ -90,9 +90,13 @@ void init_syslog(int facility)
 	_syslog = 1;
 }
 
-void log_suppress(int suppress)
+int log_suppress(int suppress)
 {
+	int old_suppress = _log_suppress;
+
 	_log_suppress = suppress;
+
+	return old_suppress;
 }
 
 void release_log_memory(void)
@@ -253,6 +257,9 @@ void print_log(int level, const char *file, int line, const char *format, ...)
 	const char *message;
 	const char *trformat;		/* Translated format string */
 
+	if (_log_suppress == 2)
+		return;
+
 	trformat = _(format);
 
 	if (_lvm2_log_fn) {

lib/log/log.h

@@ -86,8 +86,9 @@ int ignorelockingfailure(void);
 int lockingfailed(void);
 int security_level(void);
 
-/* Suppress messages to stdout/stderr */
-void log_suppress(int suppress);
+/* Suppress messages to stdout/stderr (1) or everywhere (2) */
+/* Returns previous setting */
+int log_suppress(int suppress);
 
 /* Suppress messages to syslog */
 void syslog_suppress(int suppress);

lib/metadata/lv_alloc.h

@@ -52,7 +52,8 @@ struct alloc_handle *allocate_extents(struct volume_group *vg,
                                       uint32_t mirrored_pe,
                                       uint32_t status,
                                       struct list *allocatable_pvs,
-                                      alloc_policy_t alloc);
+				      alloc_policy_t alloc,
+				      struct list *parallel_areas);
 
 int lv_add_segment(struct alloc_handle *ah,
 		   uint32_t first_area, uint32_t num_areas,
@@ -83,4 +84,7 @@ int lv_add_more_mirrored_areas(struct logical_volume *lv,
 
 void alloc_destroy(struct alloc_handle *ah);
 
+struct list *build_parallel_areas_from_lv(struct cmd_context *cmd,
+					  struct logical_volume *lv);
+
 #endif

lib/metadata/lv_manip.c

@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
- * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -24,6 +24,18 @@
 #include "display.h"
 #include "segtype.h"
 
+/*
+ * PVs used by a segment of an LV
+ */
+struct seg_pvs {
+	struct list list;
+
+	struct list pvs;	/* struct pv_list */
+
+	uint32_t le;
+	uint32_t len;
+};
+
 /*
  * Find first unused LV number.
  */
@@ -342,13 +354,16 @@ static int _lv_reduce(struct logical_volume *lv, uint32_t extents, int delete)
 }
 
 /*
- * Empty an LV
+ * Empty an LV.
  */
 int lv_empty(struct logical_volume *lv)
 {
-	return _lv_reduce(lv, 0, lv->le_count);
+	return _lv_reduce(lv, lv->le_count, 0);
 }
 
+/*
+ * Remove given number of extents from LV.
+ */
 int lv_reduce(struct logical_volume *lv, uint32_t extents)
 {
 	return _lv_reduce(lv, extents, 1);
@@ -391,6 +406,10 @@ struct alloc_handle {
 	uint32_t log_count;		/* Number of parallel 1-extent logs */
 	uint32_t total_area_len;	/* Total number of parallel extents */
 
+	struct physical_volume *mirrored_pv;	/* FIXME Remove this */
+	uint32_t mirrored_pe;			/* FIXME Remove this */
+	struct list *parallel_areas;	/* PVs to avoid */
+
 	struct alloced_area log_area;	/* Extent used for log */
 	struct list alloced_areas[0];	/* Lists of areas in each stripe */
 };
@@ -404,7 +423,9 @@ static struct alloc_handle *_alloc_init(struct dm_pool *mem,
 					uint32_t mirrors,
 					uint32_t stripes,
 					uint32_t log_count,
-					struct physical_volume *mirrored_pv)
+					struct physical_volume *mirrored_pv,
+					uint32_t mirrored_pe,
+					struct list *parallel_areas)
 {
 	struct alloc_handle *ah;
 	uint32_t s, area_count;
@@ -458,6 +479,10 @@ static struct alloc_handle *_alloc_init(struct dm_pool *mem,
 	for (s = 0; s < ah->area_count; s++)
 		list_init(&ah->alloced_areas[s]);
 
+	ah->mirrored_pv = mirrored_pv;
+	ah->mirrored_pe = mirrored_pe;
+	ah->parallel_areas = parallel_areas;
+
 	return ah;
 }
 
@@ -646,7 +671,6 @@ static int _check_contiguous(struct lv_segment *prev_lvseg,
 /*
  * Choose sets of parallel areas to use, respecting any constraints.
  */
-/* FIXME Also accept existing areas new space must be parallel to */
 static int _find_parallel_space(struct alloc_handle *ah, alloc_policy_t alloc,
 				struct list *pvms, struct pv_area **areas,
 				uint32_t areas_size, unsigned can_split,
@@ -655,10 +679,15 @@ static int _find_parallel_space(struct alloc_handle *ah, alloc_policy_t alloc,
 {
 	struct pv_map *pvm;
 	struct pv_area *pva;
+	struct pv_list *pvl;
 	unsigned already_found_one = 0;
 	unsigned contiguous = 0, contiguous_count = 0;
 	unsigned ix;
 	unsigned ix_offset = 0;	/* Offset for non-contiguous allocations */
+	uint32_t max_parallel;	/* Maximum extents to allocate */
+	uint32_t next_le;
+	struct seg_pvs *spvs;
+	struct list *parallel_pvs;
 
 	/* FIXME Do calculations on free extent counts before selecting space */
 	/* FIXME Select log PV appropriately if there isn't one yet */
@@ -676,6 +705,25 @@ static int _find_parallel_space(struct alloc_handle *ah, alloc_policy_t alloc,
 	do {
 		ix = 0;
 
+		parallel_pvs = NULL;
+		max_parallel = needed;
+
+		/*
+		 * If there are existing parallel PVs, avoid them and reduce
+		 * the maximum we can allocate in one go accordingly.
+		 */
+		if (ah->parallel_areas) {
+			list_iterate_items(spvs, ah->parallel_areas) {
+				next_le = (prev_lvseg ? prev_lvseg->le + prev_lvseg->len : 0) + *allocated;
+				if (next_le >= spvs->le) {
+					if (next_le + max_parallel > spvs->le + spvs->len)
+						max_parallel = (spvs->le + spvs->len - next_le) * ah->area_multiple;
+					parallel_pvs = &spvs->pvs;
+					break;
+				}
+			}
+		}
+
 		/*
 		 * Put the smallest area of each PV that is at least the
 		 * size we need into areas array.  If there isn't one
@@ -686,10 +734,18 @@ static int _find_parallel_space(struct alloc_handle *ah, alloc_policy_t alloc,
 			if (list_empty(&pvm->areas))
 				continue;	/* Next PV */
 
-			/* Don't allocate onto the log pv */
-			if ((alloc != ALLOC_ANYWHERE) && ah->log_count &&
-			    (pvm->pv == ah->log_area.pv))
-				continue;	/* Next PV */
+			if (alloc != ALLOC_ANYWHERE) {
+				/* Don't allocate onto the log pv */
+				if (ah->log_count &&
+				    pvm->pv == ah->log_area.pv)
+					continue;	/* Next PV */
+
+				/* Avoid PVs used by existing parallel areas */
+				if (parallel_pvs)
+					list_iterate_items(pvl, parallel_pvs)
+						if (pvm->pv == pvl->pv)
+							goto next_pv;
+			}
 
 			already_found_one = 0;
 			/* First area in each list is the largest */
@@ -700,17 +756,17 @@ static int _find_parallel_space(struct alloc_handle *ah, alloc_policy_t alloc,
 							      pvm->pv,
 							      pva, areas)) {
 						contiguous_count++;
-						break; /* Next PV */
+						goto next_pv;
 					}
 					continue;
 				}
 
 				/* Is it big enough on its own? */
-				if ((pva->count < needed - *allocated) &&
+				if ((pva->count < max_parallel - *allocated) &&
 				    ((!can_split && !ah->log_count) ||
 				     (already_found_one &&
 				      !(alloc == ALLOC_ANYWHERE))))
-					break;	/* Next PV */
+					goto next_pv;
 
 				if (!already_found_one ||
 				    alloc == ALLOC_ANYWHERE) {
@@ -720,8 +776,9 @@ static int _find_parallel_space(struct alloc_handle *ah, alloc_policy_t alloc,
 
 				areas[ix + ix_offset - 1] = pva;
 
-				break;	/* Next PV */
+				goto next_pv;
 			}
+		next_pv:
 			if (ix >= areas_size)
 				break;
 		}
@@ -743,7 +800,7 @@ static int _find_parallel_space(struct alloc_handle *ah, alloc_policy_t alloc,
 
 		/* First time around, use smallest area as log_area */
 		/* FIXME decide which PV to use at top of function instead */
-		if (!_alloc_parallel_area(ah, needed, areas,
+		if (!_alloc_parallel_area(ah, max_parallel, areas,
 					  allocated,
 					  (ah->log_count && !ah->log_area.len) ?
 						*(areas + ix_offset + ix - 1) :
@@ -764,13 +821,11 @@ static int _find_parallel_space(struct alloc_handle *ah, alloc_policy_t alloc,
  */
 static int _allocate(struct alloc_handle *ah,
 		     struct volume_group *vg,
-			   struct logical_volume *lv, uint32_t status,
-			   uint32_t new_extents,
-			   struct list *allocatable_pvs,
-			   uint32_t stripes, uint32_t mirrors,
-			   struct segment_type *segtype,
-			   struct physical_volume *mirrored_pv,
-			   uint32_t mirrored_pe)
+		     struct logical_volume *lv, uint32_t status,
+		     uint32_t new_extents,
+		     struct list *allocatable_pvs,
+		     uint32_t stripes, uint32_t mirrors,
+		     struct segment_type *segtype)
 {
 	struct pv_area **areas;
 	uint32_t allocated = lv ? lv->le_count : 0;
@@ -781,12 +836,12 @@ static int _allocate(struct alloc_handle *ah,
 	struct list *pvms;
 	uint32_t areas_size;
 
-	if (allocated >= new_extents) {
+	if (allocated >= new_extents && !ah->log_count) {
 		log_error("_allocate called with no work to do!");
 		return 1;
 	}
 
-	if (mirrored_pv || (ah->alloc == ALLOC_CONTIGUOUS))
+	if (ah->mirrored_pv || (ah->alloc == ALLOC_CONTIGUOUS))
 		can_split = 0;
 
 	if (lv && !list_empty(&lv->segments))
@@ -906,7 +961,8 @@ struct alloc_handle *allocate_extents(struct volume_group *vg,
 				      uint32_t mirrored_pe,
 				      uint32_t status,
 				      struct list *allocatable_pvs,
-				      alloc_policy_t alloc)
+				      alloc_policy_t alloc,
+				      struct list *parallel_areas)
 {
 	struct alloc_handle *ah;
 
@@ -929,15 +985,15 @@ struct alloc_handle *allocate_extents(struct volume_group *vg,
 		alloc = vg->alloc;
 
 	if (!(ah = _alloc_init(vg->cmd->mem, segtype, alloc, mirrors,
-			       stripes, log_count, mirrored_pv))) {
+			       stripes, log_count, mirrored_pv,
+			       mirrored_pe, parallel_areas))) {
 		stack;
 		return NULL;
 	}
 
 	if (!segtype_is_virtual(segtype) &&
 	    !_allocate(ah, vg, lv, status, (lv ? lv->le_count : 0) + extents,
-		       allocatable_pvs,
-		       stripes, mirrors, segtype, mirrored_pv, mirrored_pe)) {
+		       allocatable_pvs, stripes, mirrors, segtype)) {
 		stack;
 		alloc_destroy(ah);
 		return NULL;
@@ -1098,8 +1154,7 @@ int lv_add_more_mirrored_areas(struct logical_volume *lv,
 		return 0;
 	}
 
-	list_iterate_items(seg, &lv->segments)
-		break;
+	seg = first_seg(lv);
 
 	old_area_count = seg->area_count;
 	new_area_count = old_area_count + num_extra_areas;
@@ -1139,7 +1194,7 @@ int lv_extend(struct logical_volume *lv,
 
 	if (!(ah = allocate_extents(lv->vg, lv, segtype, stripes, mirrors, 0,
 				    extents, mirrored_pv, mirrored_pe, status,
-				    allocatable_pvs, alloc))) {
+				    allocatable_pvs, alloc, NULL))) {
 		stack;
 		return 0;
 	}
@@ -1272,3 +1327,116 @@ struct logical_volume *lv_create_empty(struct format_instance *fi,
 
 	return lv;
 }
+
+/* Recursively process each PV used by part of an LV */
+static int _for_each_pv(struct cmd_context *cmd, struct logical_volume *lv,
+			uint32_t le, uint32_t len,
+			int (*fn)(struct cmd_context *cmd, struct pv_segment *peg, struct seg_pvs *spvs),
+			struct seg_pvs *spvs)
+{
+	struct lv_segment *seg;
+	uint32_t s;
+	uint32_t remaining_seg_len, area_len, area_multiple;
+
+	if (!(seg = find_seg_by_le(lv, le))) {
+		log_error("Failed to find segment for %s extent %" PRIu32,
+			  lv->name, le);
+		return 0;
+	}
+
+	/* Remaining logical length of segment */
+	remaining_seg_len = seg->len - (le - seg->le);
+
+	if (len > remaining_seg_len)
+		remaining_seg_len = len;
+
+	if (spvs->len > remaining_seg_len)
+		spvs->len = remaining_seg_len;
+
+	area_multiple = segtype_is_striped(seg->segtype) ? seg->area_count : 1;
+	area_len = remaining_seg_len / area_multiple;
+
+	for (s = 0; s < seg->area_count; s++) {
+		if (seg_type(seg, s) == AREA_LV) {
+			if (!_for_each_pv(cmd, seg_lv(seg, s),
+					  seg_le(seg, s) + (le - seg->le) / area_multiple,
+					  area_len, fn, spvs)) {
+				stack;
+				return 0;
+			}
+		} else if (seg_type(seg, s) == AREA_PV) {
+			if (!fn(cmd, seg_pvseg(seg, s), spvs)) {
+				stack;
+				return 0;
+			}
+		}
+	}
+
+	return 1;
+}
+
+static int _add_pvs(struct cmd_context *cmd, struct pv_segment *peg, struct seg_pvs *spvs)
+{
+	struct pv_list *pvl;
+
+	/* FIXME Don't add again if it's already on the list! */
+
+	if (!(pvl = dm_pool_alloc(cmd->mem, sizeof(*pvl)))) {
+		log_error("pv_list allocation failed");
+		return 0;
+	}
+
+	pvl->pv = peg->pv;
+
+	/* FIXME Use ordered list to facilitate comparison */
+	list_add(&spvs->pvs, &pvl->list);
+
+	/* FIXME Add mirror logs, snapshot cow LVs etc. */
+
+	return 1;
+}
+
+/*
+ * Construct list of segments of LVs showing which PVs they use.
+ */
+struct list *build_parallel_areas_from_lv(struct cmd_context *cmd,
+					  struct logical_volume *lv)
+{
+	struct list *parallel_areas;
+	struct seg_pvs *spvs;
+	uint32_t current_le = 0;
+
+	if (!(parallel_areas = dm_pool_alloc(cmd->mem, sizeof(*parallel_areas)))) {
+		log_error("parallel_areas allocation failed");
+		return NULL;
+	}
+
+	list_init(parallel_areas);
+
+	do {
+		if (!(spvs = dm_pool_zalloc(cmd->mem, sizeof(*spvs)))) {
+			log_error("allocation failed");
+			return NULL;
+		}
+
+		list_init(&spvs->pvs);
+
+		spvs->le = current_le;
+		spvs->len = lv->le_count - current_le;
+
+		list_add(parallel_areas, &spvs->list);
+
+		/* Find next segment end */
+		/* FIXME Unnecessary nesting! */
+		if (!_for_each_pv(cmd, lv, current_le, lv->le_count, _add_pvs, spvs)) {
+			stack;
+			return NULL;
+		}
+
+		current_le = spvs->le + spvs->len;
+	} while (current_le < lv->le_count);
+
+	/* FIXME Merge adjacent segments with identical PV lists (avoids need for contiguous allocation attempts between successful allocations) */
+
+	return parallel_areas;
+}

lib/metadata/metadata.c

@@ -71,6 +71,8 @@ static int _add_pv_to_vg(struct format_instance *fid, struct volume_group *vg,
 		return 0;
 	}
 
+	memcpy(&pv->vgid, &vg->id, sizeof(vg->id));
+
 	/* Units of 512-byte sectors */
 	pv->pe_size = vg->extent_size;
 
@@ -143,13 +145,14 @@ static int _copy_pv(struct physical_volume *pv_to,
 }
 
 int get_pv_from_vg_by_id(const struct format_type *fmt, const char *vg_name,
-			 const char *id, struct physical_volume *pv)
+			 const char *vgid, const char *pvid,
+			 struct physical_volume *pv)
 {
 	struct volume_group *vg;
 	struct pv_list *pvl;
 	int consistent = 0;
 
-	if (!(vg = vg_read(fmt->cmd, vg_name, &consistent))) {
+	if (!(vg = vg_read(fmt->cmd, vg_name, vgid, &consistent))) {
 		log_error("get_pv_from_vg_by_id: vg_read failed to read VG %s",
 			  vg_name);
 		return 0;
@@ -160,7 +163,7 @@ int get_pv_from_vg_by_id(const struct format_type *fmt, const char *vg_name,
 			  vg_name);
 
 	list_iterate_items(pvl, &vg->pvs) {
-		if (id_equal(&pvl->pv->id, (const struct id *) id)) {
+		if (id_equal(&pvl->pv->id, (const struct id *) pvid)) {
 			if (!_copy_pv(pv, pvl->pv)) {
 				stack;
 				return 0;
@@ -239,7 +242,7 @@ struct volume_group *vg_create(struct cmd_context *cmd, const char *vg_name,
 	/* is this vg name already in use ? */
 	old_partial = partial_mode();
 	init_partial(1);
-	if (vg_read(cmd, vg_name, &consistent)) {
+	if (vg_read(cmd, vg_name, NULL, &consistent)) {
 		log_err("A volume group called '%s' already exists.", vg_name);
 		goto bad;
 	}
@@ -286,7 +289,7 @@ struct volume_group *vg_create(struct cmd_context *cmd, const char *vg_name,
 	list_init(&vg->tags);
 
 	if (!(vg->fid = cmd->fmt->ops->create_instance(cmd->fmt, vg_name,
-						       NULL))) {
+						       NULL, NULL))) {
 		log_error("Failed to create format instance");
 		goto bad;
 	}
@@ -496,7 +499,7 @@ struct physical_volume *pv_create(const struct format_type *fmt,
 				  uint64_t pvmetadatasize, struct list *mdas)
 {
 	struct dm_pool *mem = fmt->cmd->mem;
-	struct physical_volume *pv = dm_pool_alloc(mem, sizeof(*pv));
+	struct physical_volume *pv = dm_pool_zalloc(mem, sizeof(*pv));
 
 	if (!pv) {
 		stack;
@@ -862,7 +865,7 @@ static struct volume_group *_vg_read_orphans(struct cmd_context *cmd)
 	struct volume_group *vg;
 	struct physical_volume *pv;
 
-	if (!(vginfo = vginfo_from_vgname(ORPHAN))) {
+	if (!(vginfo = vginfo_from_vgname(ORPHAN, NULL))) {
 		stack;
 		return NULL;
 	}
@@ -907,6 +910,7 @@ static struct volume_group *_vg_read_orphans(struct cmd_context *cmd)
  */
 static struct volume_group *_vg_read(struct cmd_context *cmd,
 				     const char *vgname,
+				     const char *vgid,
 				     int *consistent, int precommitted)
 {
 	struct format_instance *fid;
@@ -928,15 +932,15 @@ static struct volume_group *_vg_read(struct cmd_context *cmd,
 
 	/* Find the vgname in the cache */
 	/* If it's not there we must do full scan to be completely sure */
-	if (!(fmt = fmt_from_vgname(vgname))) {
+	if (!(fmt = fmt_from_vgname(vgname, vgid))) {
 		lvmcache_label_scan(cmd, 0);
-		if (!(fmt = fmt_from_vgname(vgname))) {
+		if (!(fmt = fmt_from_vgname(vgname, vgid))) {
 			if (memlock()) {
 				stack;
 				return NULL;
 			}
 			lvmcache_label_scan(cmd, 2);
-			if (!(fmt = fmt_from_vgname(vgname))) {
+			if (!(fmt = fmt_from_vgname(vgname, vgid))) {
 				stack;
 				return NULL;
 			}
@@ -947,7 +951,7 @@ static struct volume_group *_vg_read(struct cmd_context *cmd,
 		use_precommitted = 0;
 
 	/* create format instance with appropriate metadata area */
-	if (!(fid = fmt->ops->create_instance(fmt, vgname, NULL))) {
+	if (!(fid = fmt->ops->create_instance(fmt, vgname, vgid, NULL))) {
 		log_error("Failed to create format instance");
 		return NULL;
 	}
@@ -978,7 +982,7 @@ static struct volume_group *_vg_read(struct cmd_context *cmd,
 		inconsistent = 0;
 
 		lvmcache_label_scan(cmd, 2);
-		if (!(fmt = fmt_from_vgname(vgname))) {
+		if (!(fmt = fmt_from_vgname(vgname, vgid))) {
 			stack;
 			return NULL;
 		}
@@ -987,7 +991,7 @@ static struct volume_group *_vg_read(struct cmd_context *cmd,
 			use_precommitted = 0;
 
 		/* create format instance with appropriate metadata area */
-		if (!(fid = fmt->ops->create_instance(fmt, vgname, NULL))) {
+		if (!(fid = fmt->ops->create_instance(fmt, vgname, vgid, NULL))) {
 			log_error("Failed to create format instance");
 			return NULL;
 		}
@@ -1069,12 +1073,12 @@ static struct volume_group *_vg_read(struct cmd_context *cmd,
 }
 
 struct volume_group *vg_read(struct cmd_context *cmd, const char *vgname,
-			     int *consistent)
+			     const char *vgid, int *consistent)
 {
 	struct volume_group *vg;
 	struct lv_list *lvl;
 
-	if (!(vg = _vg_read(cmd, vgname, consistent, 0)))
+	if (!(vg = _vg_read(cmd, vgname, vgid, consistent, 0)))
 		return NULL;
 
 	if (!check_pv_segments(vg)) {
@@ -1112,7 +1116,7 @@ static struct volume_group *_vg_read_by_vgid(struct cmd_context *cmd,
 	/* Is corresponding vgname already cached? */
 	if ((vginfo = vginfo_from_vgid(vgid)) &&
 	    vginfo->vgname && *vginfo->vgname) {
-		if ((vg = _vg_read(cmd, vginfo->vgname,
+		if ((vg = _vg_read(cmd, vginfo->vgname, vgid,
 				   &consistent, precommitted)) &&
 		    !strncmp(vg->id.uuid, vgid, ID_LEN)) {
 			if (!consistent) {
@@ -1143,7 +1147,7 @@ static struct volume_group *_vg_read_by_vgid(struct cmd_context *cmd,
 		if (!vgname || !*vgname)
 			continue;	// FIXME Unnecessary? 
 		consistent = 0;
-		if ((vg = _vg_read(cmd, vgname, &consistent,
+		if ((vg = _vg_read(cmd, vgname, vgid, &consistent,
 				   precommitted)) &&
 		    !strncmp(vg->id.uuid, vgid, ID_LEN)) {
 			if (!consistent) {
@@ -1245,13 +1249,18 @@ struct list *get_vgs(struct cmd_context *cmd, int full_scan)
 	return lvmcache_get_vgnames(cmd, full_scan);
 }
 
+struct list *get_vgids(struct cmd_context *cmd, int full_scan)
+{
+	return lvmcache_get_vgids(cmd, full_scan);
+}
+
 struct list *get_pvs(struct cmd_context *cmd)
 {
 	struct str_list *strl;
 	struct list *results;
-	const char *vgname;
+	const char *vgname, *vgid;
 	struct list *pvh, *tmp;
-	struct list *vgnames;
+	struct list *vgids;
 	struct volume_group *vg;
 	int consistent = 0;
 	int old_partial;
@@ -1267,7 +1276,7 @@ struct list *get_pvs(struct cmd_context *cmd)
 	list_init(results);
 
 	/* Get list of VGs */
-	if (!(vgnames = get_vgs(cmd, 0))) {
+	if (!(vgids = get_vgids(cmd, 0))) {
 		log_error("get_pvs: get_vgs failed");
 		return NULL;
 	}
@@ -1278,12 +1287,16 @@ struct list *get_pvs(struct cmd_context *cmd)
 	old_pvmove = pvmove_mode();
 	init_partial(1);
 	init_pvmove(1);
-	list_iterate_items(strl, vgnames) {
-		vgname = strl->str;
-		if (!vgname)
+	list_iterate_items(strl, vgids) {
+		vgid = strl->str;
+		if (!vgid)
 			continue;	/* FIXME Unnecessary? */
 		consistent = 0;
-		if (!(vg = vg_read(cmd, vgname, &consistent))) {
+		if (!(vgname = vgname_from_vgid(NULL, vgid))) {
+			stack;
+			continue;
+		}
+		if (!(vg = vg_read(cmd, vgname, vgid, &consistent))) {
 			stack;
 			continue;
 		}

lib/metadata/metadata.h

@@ -23,9 +23,9 @@
 
 #include "ctype.h"
 #include "dev-cache.h"
+#include "lvm-string.h"
 #include "uuid.h"
 
-#define NAME_LEN 128
 #define MAX_STRIPES 128
 #define SECTOR_SHIFT 9L
 #define SECTOR_SIZE ( 1L << SECTOR_SHIFT )
@@ -122,6 +122,7 @@ struct physical_volume {
 	struct device *dev;
 	const struct format_type *fmt;
 	const char *vg_name;
+	struct id vgid;
 
 	uint32_t status;
 	uint64_t size;
@@ -382,6 +383,7 @@ struct format_handler {
 	 */
 	struct format_instance *(*create_instance) (const struct format_type *
 						    fmt, const char *vgname,
+						    const char *vgid,
 						    void *context);
 
 	/*
@@ -403,7 +405,7 @@ int vg_write(struct volume_group *vg);
 int vg_commit(struct volume_group *vg);
 int vg_revert(struct volume_group *vg);
 struct volume_group *vg_read(struct cmd_context *cmd, const char *vg_name,
-			     int *consistent);
+			     const char *vgid, int *consistent);
 struct physical_volume *pv_read(struct cmd_context *cmd, const char *pv_name,
 				struct list *mdas, uint64_t *label_sector,
 				int warnings);
@@ -411,6 +413,7 @@ struct list *get_pvs(struct cmd_context *cmd);
 
 /* Set full_scan to 1 to re-read every (filtered) device label */
 struct list *get_vgs(struct cmd_context *cmd, int full_scan);
+struct list *get_vgids(struct cmd_context *cmd, int full_scan);
 
 int pv_write(struct cmd_context *cmd, struct physical_volume *pv,
 	     struct list *mdas, int64_t label_sector);
@@ -478,7 +481,8 @@ struct pv_list *find_pv_in_vg(struct volume_group *vg, const char *pv_name);
 struct physical_volume *find_pv_in_vg_by_uuid(struct volume_group *vg,
 					      struct id *id);
 int get_pv_from_vg_by_id(const struct format_type *fmt, const char *vg_name,
-			 const char *id, struct physical_volume *pv);
+			 const char *vgid, const char *pvid,
+			 struct physical_volume *pv);
 
 /* Find an LV within a given VG */
 struct lv_list *find_lv_in_vg(struct volume_group *vg, const char *lv_name);
@@ -535,11 +539,16 @@ int lv_split_segment(struct logical_volume *lv, uint32_t le);
  */
 int lv_is_origin(const struct logical_volume *lv);
 int lv_is_cow(const struct logical_volume *lv);
+int lv_is_visible(const struct logical_volume *lv);
 
 int pv_is_in_vg(struct volume_group *vg, struct physical_volume *pv);
 
+/* Given a cow LV, return return the snapshot lv_segment that uses it */
 struct lv_segment *find_cow(const struct logical_volume *lv);
 
+/* Given a cow LV, return its origin */
+struct logical_volume *origin_from_cow(const struct logical_volume *lv);
+
 int vg_add_snapshot(struct format_instance *fid, const char *name,
 		    struct logical_volume *origin, struct logical_volume *cow,
 		    union lvid *lvid, uint32_t extent_count,
@@ -561,8 +570,14 @@ int create_mirror_layers(struct alloc_handle *ah,
 			 uint32_t status,
 			 uint32_t region_size,
 			 struct logical_volume *log_lv);
-int remove_mirror_images(struct lv_segment *mirrored_seg, uint32_t num_mirrors);
-int remove_all_mirror_images(struct logical_volume *lv);
+int add_mirror_layers(struct alloc_handle *ah,
+		      uint32_t num_mirrors,
+		      uint32_t existing_mirrors,
+		      struct logical_volume *lv,
+		      struct segment_type *segtype);
+
+int remove_mirror_images(struct lv_segment *mirrored_seg, uint32_t num_mirrors,
+			 struct list *removable_pvs, int remove_log);
 /*
  * Given mirror image or mirror log segment, find corresponding mirror segment 
  */
@@ -594,29 +609,4 @@ uint32_t find_free_lvnum(struct logical_volume *lv);
 char *generate_lv_name(struct volume_group *vg, const char *format,
 		       char *buffer, size_t len);
 
-static inline int validate_name(const char *n)
-{
-	register char c;
-	register int len = 0;
-
-	if (!n || !*n)
-		return 0;
-
-	/* Hyphen used as VG-LV separator - ambiguity if LV starts with it */
-	if (*n == '-')
-		return 0;
-
-	if (!strcmp(n, ".") || !strcmp(n, ".."))
-		return 0;
-
-	while ((len++, c = *n++))
-		if (!isalnum(c) && c != '.' && c != '_' && c != '-' && c != '+')
-			return 0;
-
-	if (len > NAME_LEN)
-		return 0;
-
-	return 1;
-}
-
 #endif

lib/metadata/mirror.c

@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2003-2004 Sistina Software, Inc. All rights reserved.  
- * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -21,6 +21,7 @@
 #include "activate.h"
 #include "lv_alloc.h"
 #include "lvm-string.h"
+#include "locking.h"	/* FIXME Should not be used in this file */
 
 struct lv_segment *find_mirror_seg(struct lv_segment *seg)
 {
@@ -62,6 +63,9 @@ static void _move_lv_segments(struct logical_volume *lv_to, struct logical_volum
 
 	list_init(&lv_from->segments);
 
+	lv_to->le_count = lv_from->le_count;
+	lv_to->size = lv_from->size;
+
 	lv_from->le_count = 0;
 	lv_from->size = 0;
 }
@@ -69,65 +73,163 @@ static void _move_lv_segments(struct logical_volume *lv_to, struct logical_volum
 /*
  * Reduce mirrored_seg to num_mirrors images.
  */
-int remove_mirror_images(struct lv_segment *mirrored_seg, uint32_t num_mirrors)
+int remove_mirror_images(struct lv_segment *mirrored_seg, uint32_t num_mirrors,
+			 struct list *removable_pvs, int remove_log)
 {
 	uint32_t m;
+	uint32_t s, s1;
+	struct logical_volume *sub_lv;
+	struct logical_volume *log_lv = NULL;
+	struct logical_volume *lv1 = NULL;
+	struct physical_volume *pv;
+	struct lv_segment *seg;
+	struct lv_segment_area area;
+	int all_pvs_removable, pv_found;
+	struct pv_list *pvl;
+	uint32_t old_area_count = mirrored_seg->area_count;
+	uint32_t new_area_count = mirrored_seg->area_count;
+
+	log_very_verbose("Reducing mirror set from %" PRIu32 " to %"
+			 PRIu32 " image(s)%s.",
+			 old_area_count, num_mirrors,
+			 remove_log ? " and no log volume" : "");
+
+	/* Move removable_pvs to end of array */
+	if (removable_pvs) {
+		for (s = 0; s < mirrored_seg->area_count; s++) {
+			all_pvs_removable = 1;
+			sub_lv = seg_lv(mirrored_seg, s);
+			list_iterate_items(seg, &sub_lv->segments) {
+				for (s1 = 0; s1 < seg->area_count; s1++) {
+					if (seg_type(seg, s1) != AREA_PV)
+						/* FIXME Recurse for AREA_LV */
+						continue;
+
+					pv = seg_pv(seg, s1);
+
+					pv_found = 0;
+					list_iterate_items(pvl, removable_pvs) {
+						if (pv->dev->dev == pvl->pv->dev->dev) {
+							pv_found = 1;
+							break;
+						}
+					}
+					if (!pv_found) {
+						all_pvs_removable = 0;
+						break;
+					}
+				}
+				if (!all_pvs_removable)
+					break;
+			}
+			if (all_pvs_removable) {
+				/* Swap segment to end */
+				new_area_count--;
+				area = mirrored_seg->areas[new_area_count];
+				mirrored_seg->areas[new_area_count] = mirrored_seg->areas[s];
+				mirrored_seg->areas[s] = area;
+			}
+			/* Found enough matches? */
+			if (new_area_count == num_mirrors)
+				break;
+		}
+		if (new_area_count == mirrored_seg->area_count) {
+			log_error("No mirror images found using specified PVs.");
+			return 0;
+		}
+	}
 
 	for (m = num_mirrors; m < mirrored_seg->area_count; m++) {
+		seg_lv(mirrored_seg, m)->status &= ~MIRROR_IMAGE;
+		seg_lv(mirrored_seg, m)->status |= VISIBLE_LV;
+	}
+
+	mirrored_seg->area_count = num_mirrors;
+
+	/* If no more mirrors, remove mirror layer */
+	if (num_mirrors == 1) {
+		lv1 = seg_lv(mirrored_seg, 0);
+		_move_lv_segments(mirrored_seg->lv, lv1);
+		mirrored_seg->lv->status &= ~MIRRORED;
+		remove_log = 1;
+	}
+
+	if (remove_log) {
+		log_lv = mirrored_seg->log_lv;
+		mirrored_seg->log_lv = NULL;
+	}
+
+	/*
+	 * To successfully remove these unwanted LVs we need to
+	 * remove the LVs from the mirror set, commit that metadata
+	 * then deactivate and remove them fully.
+	 */
+
+	/* FIXME lv1 has no segments here so shouldn't be written to disk! */
+
+	if (!vg_write(mirrored_seg->lv->vg)) {
+		log_error("intermediate VG write failed.");
+		return 0;
+	}
+
+	if (!suspend_lv(mirrored_seg->lv->vg->cmd, mirrored_seg->lv)) {
+		log_error("Failed to lock %s", mirrored_seg->lv->name);
+		vg_revert(mirrored_seg->lv->vg);
+		return 0;
+	}
+
+	if (!vg_commit(mirrored_seg->lv->vg)) {
+		resume_lv(mirrored_seg->lv->vg->cmd, mirrored_seg->lv);
+		return 0;
+	}
+
+	log_very_verbose("Updating \"%s\" in kernel", mirrored_seg->lv->name);
+
+	if (!resume_lv(mirrored_seg->lv->vg->cmd, mirrored_seg->lv)) {
+		log_error("Problem reactivating %s", mirrored_seg->lv->name);
+		return 0;
+	}
+
+	/* Delete the 'orphan' LVs */
+	for (m = num_mirrors; m < old_area_count; m++) {
+		if (!deactivate_lv(mirrored_seg->lv->vg->cmd, seg_lv(mirrored_seg, m))) {
+			stack;
+			return 0;
+		}
+
 		if (!lv_remove(seg_lv(mirrored_seg, m))) {
 			stack;
 			return 0;
 		}
 	}
 
-	mirrored_seg->area_count = num_mirrors;
+	if (lv1) {
+		if (!deactivate_lv(mirrored_seg->lv->vg->cmd, lv1)) {
+			stack;
+			return 0;
+		}
+
+		if (!lv_remove(lv1)) {
+			stack;
+			return 0;
+		}
+	}
+
+	if (log_lv) {
+		if (!deactivate_lv(mirrored_seg->lv->vg->cmd, log_lv)) {
+			stack;
+			return 0;
+		}
+
+		if (!lv_remove(log_lv)) {
+			stack;
+			return 0;
+		}
+	}
 
 	return 1;
 }
 
-int remove_all_mirror_images(struct logical_volume *lv)
-{
-	struct lv_segment *seg;
-	struct logical_volume *lv1;
-
-	seg = first_seg(lv);
-
-	if (!remove_mirror_images(seg, 1)) {
-		stack;
-		return 0;
-	}
-
-	if (seg->log_lv && !lv_remove(seg->log_lv)) {
-		stack;
-		return 0;
-	}
-
-	lv1 = seg_lv(seg, 0);
-
-	_move_lv_segments(lv, lv1);
-
-	if (!lv_remove(lv1)) {
-		stack;
-		return 0;
-	}
-
-	lv->status &= ~MIRRORED;
-
-	return 1;
-}
-
-/*
- * Add mirror images to an existing mirror
- */
-/* FIXME
-int add_mirror_images(struct alloc_handle *ah,
-		      uint32_t first_area,
-		      uint32_t num_areas,
-		      struct logical_volume *lv)
-{
-}
-*/
-
 static int _create_layers_for_mirror(struct alloc_handle *ah,
 				     uint32_t first_area,
 				     uint32_t num_mirrors,
@@ -161,7 +263,10 @@ static int _create_layers_for_mirror(struct alloc_handle *ah,
 			return 0;
 		}
 
-		if (!lv_add_segment(ah, m, 1, img_lvs[m],
+		if (m < first_area)
+			continue;
+
+		if (!lv_add_segment(ah, m - first_area, 1, img_lvs[m],
 				    get_segtype_from_string(lv->vg->cmd,
 							    "striped"),
 				    0, NULL, 0, 0, 0, NULL)) {
@@ -219,6 +324,30 @@ int create_mirror_layers(struct alloc_handle *ah,
 	return 1;
 }
 
+int add_mirror_layers(struct alloc_handle *ah,
+		      uint32_t num_mirrors,
+		      uint32_t existing_mirrors,
+		      struct logical_volume *lv,
+		      struct segment_type *segtype)
+{
+	struct logical_volume **img_lvs;
+
+	if (!(img_lvs = alloca(sizeof(*img_lvs) * num_mirrors))) {
+		log_error("img_lvs allocation failed. "
+			  "Remove new LV and retry.");
+		return 0;
+	}
+
+	if (!_create_layers_for_mirror(ah, 0, num_mirrors,
+				       lv, segtype,
+				       img_lvs)) {
+		stack;
+		return 0;
+	}
+
+	return lv_add_more_mirrored_areas(lv, img_lvs, num_mirrors, 0);
+}
+
 /* 
  * Replace any LV segments on given PV with temporary mirror.
  * Returns list of LVs changed.

lib/metadata/segtype.h

@@ -78,6 +78,12 @@ struct segtype_handler {
 			       uint64_t *total_denominator, float *percent);
 	int (*target_present) (void);
 	void (*destroy) (const struct segment_type * segtype);
+	int (*target_register_events) (struct dm_pool *mem,
+				       struct lv_segment *seg,
+				       struct config_tree *cft, int events);
+	int (*target_unregister_events) (struct dm_pool *mem,
+					 struct lv_segment *seg,
+					 struct config_tree *cft, int events);
 };
 
 struct segment_type *get_segtype_from_string(struct cmd_context *cmd,

lib/metadata/snapshot_manip.c

@@ -28,12 +28,26 @@ int lv_is_cow(const struct logical_volume *lv)
 	return lv->snapshot ? 1 : 0;
 }
 
+int lv_is_visible(const struct logical_volume *lv)
+{
+	if (lv_is_cow(lv))
+		return lv_is_visible(find_cow(lv)->lv);
+
+	return lv->status & VISIBLE_LV ? 1 : 0;
+}
+
 /* Given a cow LV, return the snapshot lv_segment that uses it */
 struct lv_segment *find_cow(const struct logical_volume *lv)
 {
 	return lv->snapshot;
 }
 
+/* Given a cow LV, return its origin */
+struct logical_volume *origin_from_cow(const struct logical_volume *lv)
+{
+	return lv->snapshot->origin;
+}
+
 int vg_add_snapshot(struct format_instance *fid, const char *name,
 		    struct logical_volume *origin,
 		    struct logical_volume *cow, union lvid *lvid,

lib/mirror/mirrored.c

@@ -25,6 +25,13 @@
 #include "lvm-string.h"
 #include "targets.h"
 #include "activate.h"
+#include "sharedlib.h"
+
+#ifdef DMEVENTD
+#  include <libdevmapper-event.h>
+#endif
+
+static int _block_on_error_available = 0;
 
 enum {
 	MIRR_DISABLED,
@@ -36,12 +43,12 @@ struct mirror_state {
 	uint32_t default_region_size;
 };
 
-static const char *_name(const struct lv_segment *seg)
+static const char *_mirrored_name(const struct lv_segment *seg)
 {
 	return seg->segtype->name;
 }
 
-static void _display(const struct lv_segment *seg)
+static void _mirrored_display(const struct lv_segment *seg)
 {
 	const char *size;
 	uint32_t s;
@@ -66,7 +73,7 @@ static void _display(const struct lv_segment *seg)
 	log_print(" ");
 }
 
-static int _text_import_area_count(struct config_node *sn, uint32_t *area_count)
+static int _mirrored_text_import_area_count(struct config_node *sn, uint32_t *area_count)
 {
 	if (!get_config_uint32(sn, "mirror_count", area_count)) {
 		log_error("Couldn't read 'mirror_count' for "
@@ -77,7 +84,7 @@ static int _text_import_area_count(struct config_node *sn, uint32_t *area_count)
 	return 1;
 }
 
-static int _text_import(struct lv_segment *seg, const struct config_node *sn,
+static int _mirrored_text_import(struct lv_segment *seg, const struct config_node *sn,
 			struct dm_hash_table *pv_hash)
 {
 	const struct config_node *cn;
@@ -132,7 +139,7 @@ static int _text_import(struct lv_segment *seg, const struct config_node *sn,
 	return text_import_areas(seg, sn, cn, pv_hash, MIRROR_IMAGE);
 }
 
-static int _text_export(const struct lv_segment *seg, struct formatter *f)
+static int _mirrored_text_export(const struct lv_segment *seg, struct formatter *f)
 {
 	outf(f, "mirror_count = %u", seg->area_count);
 	if (seg->status & PVMOVE)
@@ -147,7 +154,7 @@ static int _text_export(const struct lv_segment *seg, struct formatter *f)
 }
 
 #ifdef DEVMAPPER_SUPPORT
-static struct mirror_state *_init_target(struct dm_pool *mem,
+static struct mirror_state *_mirrored_init_target(struct dm_pool *mem,
 					 struct config_tree *cft)
 {
 	struct mirror_state *mirr_state;
@@ -165,7 +172,7 @@ static struct mirror_state *_init_target(struct dm_pool *mem,
 	return mirr_state;
 }
 
-static int _target_percent(void **target_state, struct dm_pool *mem,
+static int _mirrored_target_percent(void **target_state, struct dm_pool *mem,
 			   struct config_tree *cft, struct lv_segment *seg,
 			   char *params, uint64_t *total_numerator,
 			   uint64_t *total_denominator, float *percent)
@@ -177,7 +184,7 @@ static int _target_percent(void **target_state, struct dm_pool *mem,
 	char *pos = params;
 
 	if (!*target_state)
-		*target_state = _init_target(mem, cft);
+		*target_state = _mirrored_init_target(mem, cft);
 
 	mirr_state = *target_state;
 
@@ -221,6 +228,7 @@ static int _add_log(struct dev_manager *dm, struct lv_segment *seg,
 {
 	unsigned clustered = 0;
 	char *log_dlid = NULL;
+	uint32_t log_flags = 0;
 
 	/*
 	 * Use clustered mirror log for non-exclusive activation 
@@ -237,11 +245,13 @@ static int _add_log(struct dev_manager *dm, struct lv_segment *seg,
 		return 0;
 	}
 
-	/* FIXME Add sync parm? */
-	return dm_tree_node_add_mirror_target_log(node, region_size, clustered, log_dlid, area_count);
+	if (_block_on_error_available && !(seg->status & PVMOVE))
+		log_flags |= DM_BLOCK_ON_ERROR;
+
+	return dm_tree_node_add_mirror_target_log(node, region_size, clustered, log_dlid, area_count, log_flags);
 }
 
-static int _add_target_line(struct dev_manager *dm, struct dm_pool *mem,
+static int _mirrored_add_target_line(struct dev_manager *dm, struct dm_pool *mem,
                                 struct config_tree *cft, void **target_state,
                                 struct lv_segment *seg,
                                 struct dm_tree_node *node, uint64_t len,
@@ -255,7 +265,7 @@ static int _add_target_line(struct dev_manager *dm, struct dm_pool *mem,
 	int r;
 
 	if (!*target_state)
-		*target_state = _init_target(mem, cft);
+		*target_state = _mirrored_init_target(mem, cft);
 
 	mirr_state = *target_state;
 
@@ -312,37 +322,141 @@ static int _add_target_line(struct dev_manager *dm, struct dm_pool *mem,
 	return add_areas_line(dm, seg, node, start_area, area_count);
 }
 
-static int _target_present(void)
+static int _mirrored_target_present(void)
 {
-	static int checked = 0;
-	static int present = 0;
+	static int _mirrored_checked = 0;
+	static int _mirrored_present = 0;
+	uint32_t maj, min, patchlevel;
+	unsigned maj2, min2, patchlevel2;
+        char vsn[80];
 
-	if (!checked)
-		present = target_present("mirror", 1);
+	if (!_mirrored_checked) {
+		_mirrored_present = target_present("mirror", 1);
 
-	checked = 1;
+		/*
+		 * block_on_error available with mirror target >= 1.1
+		 * or with 1.0 in RHEL4U3 driver >= 4.5
+		 */
+		/* FIXME Move this into libdevmapper */
 
-	return present;
+		if (target_version("mirror", &maj, &min, &patchlevel) &&
+		    maj == 1 && 
+		    (min >= 1 || 
+		     (min == 0 && driver_version(vsn, sizeof(vsn)) &&
+		      sscanf(vsn, "%u.%u.%u", &maj2, &min2, &patchlevel2) == 3 &&
+		      maj2 == 4 && min2 == 5 && patchlevel2 == 0)))	/* RHEL4U3 */
+			_block_on_error_available = 1;
+	}
+
+	_mirrored_checked = 1;
+
+	return _mirrored_present;
 }
-#endif
 
-static void _destroy(const struct segment_type *segtype)
+#ifdef DMEVENTD
+static int _setup_registration(struct dm_pool *mem, struct config_tree *cft,
+			       char **dso)
+{
+	char *path;
+	const char *libpath;
+
+	if (!(path = dm_pool_alloc(mem, PATH_MAX))) {
+		log_error("Failed to allocate dmeventd library path.");
+		return 0;
+	}
+
+	libpath = find_config_str(cft->root, "dmeventd/mirror_library",
+				  DEFAULT_DMEVENTD_MIRROR_LIB);
+
+	get_shared_library_path(cft, libpath, path, PATH_MAX);
+
+	*dso = path;
+
+	return 1;
+}
+
+/* FIXME This gets run while suspended and performs banned operations. */
+/* FIXME Merge these two functions */
+static int _target_register_events(struct dm_pool *mem,
+				   struct lv_segment *seg,
+				   struct config_tree *cft, int events)
+{
+	char *dso, *name;
+	struct logical_volume *lv;
+	struct volume_group *vg;
+
+	lv = seg->lv;
+	vg = lv->vg;
+
+	if (!_setup_registration(mem, cft, &dso)) {
+		stack;
+		return 0;
+	}
+
+	if (!(name = build_dm_name(mem, vg->name, lv->name, NULL)))
+		return_0;
+
+	/* FIXME Save a returned handle here so we can unregister it later */
+	if (!dm_event_register(dso, name, DM_EVENT_ALL_ERRORS))
+		return_0;
+
+	log_info("Registered %s for events", name);
+
+	return 1;
+}
+
+static int _target_unregister_events(struct dm_pool *mem,
+				     struct lv_segment *seg,
+				     struct config_tree *cft, int events)
+{
+	char *dso;
+	char *name;
+	struct logical_volume *lv;
+	struct volume_group *vg;
+
+	lv = seg->lv;
+	vg = lv->vg;
+
+	/* FIXME Remove this and use handle to avoid config file race */
+	if (!_setup_registration(mem, cft, &dso))
+		return_0;
+
+	if (!(name = build_dm_name(mem, vg->name, lv->name, NULL)))
+		return_0;
+
+	/* FIXME Use handle returned by registration function instead of dso */
+	if (!dm_event_unregister(dso, name, DM_EVENT_ALL_ERRORS))
+		return_0;
+
+	log_info("Unregistered %s for events", name);
+
+	return 1;
+}
+
+#endif /* DMEVENTD */
+#endif /* DEVMAPPER_SUPPORT */
+
+static void _mirrored_destroy(const struct segment_type *segtype)
 {
 	dm_free((void *) segtype);
 }
 
 static struct segtype_handler _mirrored_ops = {
-	name:_name,
-	display:_display,
-	text_import_area_count:_text_import_area_count,
-	text_import:_text_import,
-	text_export:_text_export,
+	name:_mirrored_name,
+	display:_mirrored_display,
+	text_import_area_count:_mirrored_text_import_area_count,
+	text_import:_mirrored_text_import,
+	text_export:_mirrored_text_export,
 #ifdef DEVMAPPER_SUPPORT
-	add_target_line:_add_target_line,
-	target_percent:_target_percent,
-	target_present:_target_present,
+	add_target_line:_mirrored_add_target_line,
+	target_percent:_mirrored_target_percent,
+	target_present:_mirrored_target_present,
+#ifdef DMEVENTD
+	target_register_events:_target_register_events,
+	target_unregister_events:_target_unregister_events,
 #endif
-	destroy:_destroy,
+#endif
+	destroy:_mirrored_destroy,
 };
 
 #ifdef MIRRORED_INTERNAL

lib/misc/lvm-string.c

@@ -208,3 +208,27 @@ int split_dm_name(struct dm_pool *mem, const char *dmname,
 	return 1;
 }
 
+int validate_name(const char *n)
+{
+	register char c;
+	register int len = 0;
+
+	if (!n || !*n)
+		return 0;
+
+	/* Hyphen used as VG-LV separator - ambiguity if LV starts with it */
+	if (*n == '-')
+		return 0;
+
+	if (!strcmp(n, ".") || !strcmp(n, ".."))
+		return 0;
+
+	while ((len++, c = *n++))
+		if (!isalnum(c) && c != '.' && c != '_' && c != '-' && c != '+')
+			return 0;
+
+	if (len > NAME_LEN)
+		return 0;
+
+	return 1;
+}

lib/misc/lvm-string.h

@@ -19,6 +19,8 @@
 #include <stdio.h>
 #include <stdarg.h>
 
+#define NAME_LEN 128
+
 struct pool;
 
 /*
@@ -40,4 +42,6 @@ char *build_dm_name(struct dm_pool *mem, const char *vg,
 int split_dm_name(struct dm_pool *mem, const char *dmname,
                   char **vgname, char **lvname, char **layer);
 
+int validate_name(const char *n);
+
 #endif

lib/misc/sharedlib.c

@@ -22,8 +22,8 @@
 #include <sys/stat.h>
 #include <dlfcn.h>
 
-static void _get_library_path(struct config_tree *cft, const char *libname,
-			      char *path, int path_len)
+void get_shared_library_path(struct config_tree *cft, const char *libname,
+			     char *path, int path_len)
 {
 	struct stat info;
 	const char *lib_dir;
@@ -38,17 +38,23 @@ static void _get_library_path(struct config_tree *cft, const char *libname,
 }
 
 void *load_shared_library(struct config_tree *cft, const char *libname,
-			  const char *desc)
+			  const char *desc, int silent)
 {
 	char path[PATH_MAX];
 	void *library;
 
-	_get_library_path(cft, libname, path, sizeof(path));
+	get_shared_library_path(cft, libname, path, sizeof(path));
 
 	log_very_verbose("Opening shared %s library %s", desc, path);
 
-	if (!(library = dlopen(path, RTLD_LAZY)))
-		log_error("Unable to open external %s library %s", desc, path);
+	if (!(library = dlopen(path, RTLD_LAZY))) {
+		if (silent && ignorelockingfailure())
+			log_verbose("Unable to open external %s library %s",
+				    desc, path);
+		else
+			log_error("Unable to open external %s library %s",
+				  desc, path);
+	}
 
 	return library;
 }

lib/misc/sharedlib.h

@@ -16,5 +16,7 @@
 #include "config.h"
 #include <dlfcn.h>
 
+void get_shared_library_path(struct config_tree *cft, const char *libname,
+			     char *path, int path_len);
 void *load_shared_library(struct config_tree *cf, const char *libname,
-			  const char *what);
+			  const char *what, int silent);

lib/mm/memlock.c

@@ -90,7 +90,7 @@ static void _release_memory(void)
 }
 
 /* Stop memory getting swapped out */
-static void _lock_memory(void)
+static void _lock_mem(void)
 {
 #ifdef MCL_CURRENT
 	if (mlockall(MCL_CURRENT | MCL_FUTURE))
@@ -109,7 +109,7 @@ static void _lock_memory(void)
 				  _default_priority, strerror(errno));
 }
 
-static void _unlock_memory(void)
+static void _unlock_mem(void)
 {
 #ifdef MCL_CURRENT
 	if (munlockall())
@@ -126,14 +126,14 @@ static void _unlock_memory(void)
 void memlock_inc(void)
 {
 	if (!_memlock_count++)
-		_lock_memory();
+		_lock_mem();
 	log_debug("memlock_count inc to %d", _memlock_count);
 }
 
 void memlock_dec(void)
 {
 	if (_memlock_count && (!--_memlock_count))
-		_unlock_memory();
+		_unlock_mem();
 	log_debug("memlock_count dec to %d", _memlock_count);
 }
 

lib/regex/matcher.c

@@ -166,7 +166,7 @@ static void _calc_functions(struct matcher *m)
 	}
 }
 
-static inline struct dfa_state *_create_dfa_state(struct dm_pool *mem)
+static struct dfa_state *_create_dfa_state(struct dm_pool *mem)
 {
 	return dm_pool_zalloc(mem, sizeof(struct dfa_state));
 }
@@ -337,8 +337,7 @@ struct matcher *matcher_create(struct dm_pool *mem, const char **patterns,
 	return NULL;
 }
 
-static inline struct dfa_state *_step_matcher(int c,
-					      struct dfa_state *cs, int *r)
+static struct dfa_state *_step_matcher(int c, struct dfa_state *cs, int *r)
 {
 	if (!(cs = cs->lookup[(unsigned char) c]))
 		return NULL;

lib/regex/parse_rx.c

@@ -38,7 +38,7 @@ static void _single_char(struct parse_sp *ps, unsigned int c, const char *ptr)
  * Get the next token from the regular expression.
  * Returns: 1 success, 0 end of input, -1 error.
  */
-static int _get_token(struct parse_sp *ps)
+static int _rx_get_token(struct parse_sp *ps)
 {
 	int neg = 0, range = 0;
 	char c, lc = 0;
@@ -230,17 +230,17 @@ static struct rx_node *_term(struct parse_sp *ps)
 		}
 
 		dm_bit_copy(n->charset, ps->charset);
-		_get_token(ps);	/* match charset */
+		_rx_get_token(ps);	/* match charset */
 		break;
 
 	case '(':
-		_get_token(ps);	/* match '(' */
+		_rx_get_token(ps);	/* match '(' */
 		n = _or_term(ps);
 		if (ps->type != ')') {
 			log_error("missing ')' in regular expression");
 			return 0;
 		}
-		_get_token(ps);	/* match ')' */
+		_rx_get_token(ps);	/* match ')' */
 		break;
 
 	default:
@@ -280,7 +280,7 @@ static struct rx_node *_closure_term(struct parse_sp *ps)
 			return NULL;
 		}
 
-		_get_token(ps);
+		_rx_get_token(ps);
 		l = n;
 	}
 
@@ -316,7 +316,7 @@ static struct rx_node *_or_term(struct parse_sp *ps)
 	if (ps->type != '|')
 		return l;
 
-	_get_token(ps);		/* match '|' */
+	_rx_get_token(ps);		/* match '|' */
 
 	if (!(r = _or_term(ps))) {
 		log_error("Badly formed 'or' expression");
@@ -344,7 +344,7 @@ struct rx_node *rx_parse_tok(struct dm_pool *mem,
 	ps->charset = dm_bitset_create(mem, 256);
 	ps->cursor = begin;
 	ps->rx_end = end;
-	_get_token(ps);		/* load the first token */
+	_rx_get_token(ps);		/* load the first token */
 
 	if (!(r = _or_term(ps))) {
 		log_error("Parse error in regex");

lib/regex/ttree.c

@@ -59,7 +59,7 @@ void *ttree_lookup(struct ttree *tt, unsigned *key)
 	return *c ? (*c)->data : NULL;
 }
 
-static struct node *_node(struct dm_pool *mem, unsigned int k)
+static struct node *_tree_node(struct dm_pool *mem, unsigned int k)
 {
 	struct node *n = dm_pool_zalloc(mem, sizeof(*n));
 
@@ -86,7 +86,7 @@ int ttree_insert(struct ttree *tt, unsigned int *key, void *data)
 		count++;
 
 		while (count--) {
-			if (!(*c = _node(tt->mem, k))) {
+			if (!(*c = _tree_node(tt->mem, k))) {
 				stack;
 				return 0;
 			}

lib/report/report.c

@@ -324,7 +324,6 @@ static int _lvstatus_disp(struct report_handle *rh, struct field *field,
 	const struct logical_volume *lv = (const struct logical_volume *) data;
 	struct lvinfo info;
 	char *repstr;
-	struct lv_segment *snap_seg;
 	float snap_percent;
 
 	if (!(repstr = dm_pool_zalloc(rh->mem, 7))) {
@@ -344,7 +343,7 @@ static int _lvstatus_disp(struct report_handle *rh, struct field *field,
 		repstr[0] = 'v';
 	else if (lv_is_origin(lv))
 		repstr[0] = 'o';
-	else if (find_cow(lv))
+	else if (lv_is_cow(lv))
 		repstr[0] = 's';
 	else
 		repstr[0] = '-';
@@ -377,8 +376,8 @@ static int _lvstatus_disp(struct report_handle *rh, struct field *field,
 			repstr[4] = 'd';	/* Inactive without table */
 
 		/* Snapshot dropped? */
-		if (info.live_table && (snap_seg = find_cow(lv)) &&
-		    (!lv_snapshot_percent(snap_seg->cow, &snap_percent) ||
+		if (info.live_table && lv_is_cow(lv) &&
+		    (!lv_snapshot_percent(lv, &snap_percent) ||
 		     snap_percent < 0 || snap_percent >= 100)) {
 			repstr[0] = toupper(repstr[0]);
 			if (info.suspended)
@@ -491,10 +490,9 @@ static int _origin_disp(struct report_handle *rh, struct field *field,
 			const void *data)
 {
 	const struct logical_volume *lv = (const struct logical_volume *) data;
-	struct lv_segment *snap_seg;
 
-	if ((snap_seg = find_cow(lv)))
-		return _string_disp(rh, field, &snap_seg->origin->name);
+	if (lv_is_cow(lv))
+		return _string_disp(rh, field, &origin_from_cow(lv)->name);
 
 	field->report_string = "";
 	field->sort_value = (const void *) field->report_string;
@@ -527,8 +525,7 @@ static int _lvname_disp(struct report_handle *rh, struct field *field,
 	char *repstr;
 	size_t len;
 
-	/* FIXME Remove need for snapshot special case */
-	if (lv->status & VISIBLE_LV || lv_is_cow(lv)) {
+	if (lv_is_visible(lv)) {
 		repstr = lv->name;
 		return _string_disp(rh, field, &repstr);
 	}
@@ -667,11 +664,10 @@ static int _chunksize_disp(struct report_handle *rh, struct field *field,
 			   const void *data)
 {
 	const struct lv_segment *seg = (const struct lv_segment *) data;
-	struct lv_segment *snap_seg;
 	uint64_t size;
 
-	if ((snap_seg = find_cow(seg->lv)))
-		size = (uint64_t) snap_seg->chunk_size;
+	if (lv_is_cow(seg->lv))
+		size = (uint64_t) find_cow(seg->lv)->chunk_size;
 	else
 		size = 0;
 
@@ -840,7 +836,6 @@ static int _snpercent_disp(struct report_handle *rh, struct field *field,
 			   const void *data)
 {
 	const struct logical_volume *lv = (const struct logical_volume *) data;
-	struct lv_segment *snap_seg;
 	struct lvinfo info;
 	float snap_percent;
 	uint64_t *sortval;
@@ -851,16 +846,15 @@ static int _snpercent_disp(struct report_handle *rh, struct field *field,
 		return 0;
 	}
 
-	if (!(snap_seg = find_cow(lv)) ||
-	    (lv_info(lv->vg->cmd, snap_seg->cow, &info, 0) && !info.exists)) {
+	if (!lv_is_cow(lv) ||
+	    (lv_info(lv->vg->cmd, lv, &info, 0) && !info.exists)) {
 		field->report_string = "";
 		*sortval = UINT64_C(0);
 		field->sort_value = sortval;
 		return 1;
 	}
 
-	if (!lv_snapshot_percent(snap_seg->cow, &snap_percent)
-	    || snap_percent < 0) {
+	if (!lv_snapshot_percent(lv, &snap_percent) || snap_percent < 0) {
 		field->report_string = "100.00";
 		*sortval = UINT64_C(100);
 		field->sort_value = sortval;

lib/snapshot/snapshot.c

@@ -21,12 +21,12 @@
 #include "config.h"
 #include "activate.h"
 
-static const char *_name(const struct lv_segment *seg)
+static const char *_snap_name(const struct lv_segment *seg)
 {
 	return seg->segtype->name;
 }
 
-static int _text_import(struct lv_segment *seg, const struct config_node *sn,
+static int _snap_text_import(struct lv_segment *seg, const struct config_node *sn,
 			struct dm_hash_table *pv_hash)
 {
 	uint32_t chunk_size;
@@ -77,7 +77,7 @@ static int _text_import(struct lv_segment *seg, const struct config_node *sn,
 	return 1;
 }
 
-static int _text_export(const struct lv_segment *seg, struct formatter *f)
+static int _snap_text_export(const struct lv_segment *seg, struct formatter *f)
 {
 	outf(f, "chunk_size = %u", seg->chunk_size);
 	outf(f, "origin = \"%s\"", seg->origin->name);
@@ -87,7 +87,7 @@ static int _text_export(const struct lv_segment *seg, struct formatter *f)
 }
 
 #ifdef DEVMAPPER_SUPPORT
-static int _target_percent(void **target_state, struct dm_pool *mem,
+static int _snap_target_percent(void **target_state, struct dm_pool *mem,
 			   struct config_tree *cft, struct lv_segment *seg,
 			   char *params, uint64_t *total_numerator,
 			   uint64_t *total_denominator, float *percent)
@@ -109,35 +109,35 @@ static int _target_percent(void **target_state, struct dm_pool *mem,
 	return 1;
 }
 
-static int _target_present(void)
+static int _snap_target_present(void)
 {
-	static int checked = 0;
-	static int present = 0;
+	static int _snap_checked = 0;
+	static int _snap_present = 0;
 
-	if (!checked)
-		present = target_present("snapshot", 1) &&
+	if (!_snap_checked)
+		_snap_present = target_present("snapshot", 1) &&
 		    target_present("snapshot-origin", 0);
 
-	checked = 1;
+	_snap_checked = 1;
 
-	return present;
+	return _snap_present;
 }
 #endif
 
-static void _destroy(const struct segment_type *segtype)
+static void _snap_destroy(const struct segment_type *segtype)
 {
 	dm_free((void *) segtype);
 }
 
 static struct segtype_handler _snapshot_ops = {
-	name:_name,
-	text_import:_text_import,
-	text_export:_text_export,
+	name:_snap_name,
+	text_import:_snap_text_import,
+	text_export:_snap_text_export,
 #ifdef DEVMAPPER_SUPPORT
-	target_percent:_target_percent,
-	target_present:_target_present,
+	target_percent:_snap_target_percent,
+	target_present:_snap_target_present,
 #endif
-	destroy:_destroy,
+	destroy:_snap_destroy,
 };
 
 #ifdef SNAPSHOT_INTERNAL

lib/striped/striped.c

@@ -26,12 +26,12 @@
 #include "activate.h"
 #include "pv_alloc.h"
 
-static const char *_name(const struct lv_segment *seg)
+static const char *_striped_name(const struct lv_segment *seg)
 {
 	return (seg->area_count == 1) ? "linear" : seg->segtype->name;
 }
 
-static void _display(const struct lv_segment *seg)
+static void _striped_display(const struct lv_segment *seg)
 {
 	uint32_t s;
 
@@ -49,7 +49,7 @@ static void _display(const struct lv_segment *seg)
 	log_print(" ");
 }
 
-static int _text_import_area_count(struct config_node *sn, uint32_t *area_count)
+static int _striped_text_import_area_count(struct config_node *sn, uint32_t *area_count)
 {
 	if (!get_config_uint32(sn, "stripe_count", area_count)) {
 		log_error("Couldn't read 'stripe_count' for "
@@ -60,7 +60,7 @@ static int _text_import_area_count(struct config_node *sn, uint32_t *area_count)
 	return 1;
 }
 
-static int _text_import(struct lv_segment *seg, const struct config_node *sn,
+static int _striped_text_import(struct lv_segment *seg, const struct config_node *sn,
 			struct dm_hash_table *pv_hash)
 {
 	struct config_node *cn;
@@ -83,7 +83,7 @@ static int _text_import(struct lv_segment *seg, const struct config_node *sn,
 	return text_import_areas(seg, sn, cn, pv_hash, 0);
 }
 
-static int _text_export(const struct lv_segment *seg, struct formatter *f)
+static int _striped_text_export(const struct lv_segment *seg, struct formatter *f)
 {
 
 	outf(f, "stripe_count = %u%s", seg->area_count,
@@ -99,7 +99,7 @@ static int _text_export(const struct lv_segment *seg, struct formatter *f)
 /*
  * Test whether two segments could be merged by the current merging code
  */
-static int _segments_compatible(struct lv_segment *first,
+static int _striped_segments_compatible(struct lv_segment *first,
 				struct lv_segment *second)
 {
 	uint32_t width;
@@ -132,11 +132,11 @@ static int _segments_compatible(struct lv_segment *first,
 	return 1;
 }
 
-static int _merge_segments(struct lv_segment *seg1, struct lv_segment *seg2)
+static int _striped_merge_segments(struct lv_segment *seg1, struct lv_segment *seg2)
 {
 	uint32_t s;
 
-	if (!_segments_compatible(seg1, seg2))
+	if (!_striped_segments_compatible(seg1, seg2))
 		return 0;
 
 	seg1->len += seg2->len;
@@ -151,7 +151,7 @@ static int _merge_segments(struct lv_segment *seg1, struct lv_segment *seg2)
 }
 
 #ifdef DEVMAPPER_SUPPORT
-static int _add_target_line(struct dev_manager *dm, struct dm_pool *mem,
+static int _striped_add_target_line(struct dev_manager *dm, struct dm_pool *mem,
                                 struct config_tree *cft, void **target_state,
                                 struct lv_segment *seg,
                                 struct dm_tree_node *node, uint64_t len,
@@ -172,37 +172,38 @@ static int _add_target_line(struct dev_manager *dm, struct dm_pool *mem,
 	return add_areas_line(dm, seg, node, 0u, seg->area_count);
 }
 
-static int _target_present(void)
+static int _striped_target_present(void)
 {
-	static int checked = 0;
-	static int present = 0;
+	static int _striped_checked = 0;
+	static int _striped_present = 0;
 
-	if (!checked)
-		present = target_present("linear", 0) &&
+	if (!_striped_checked)
+		_striped_present = target_present("linear", 0) &&
 			  target_present("striped", 0);
 
-	checked = 1;
-	return present;
+	_striped_checked = 1;
+
+	return _striped_present;
 }
 #endif
 
-static void _destroy(const struct segment_type *segtype)
+static void _striped_destroy(const struct segment_type *segtype)
 {
 	dm_free((void *) segtype);
 }
 
 static struct segtype_handler _striped_ops = {
-	name:_name,
-	display:_display,
-	text_import_area_count:_text_import_area_count,
-	text_import:_text_import,
-	text_export:_text_export,
-	merge_segments:_merge_segments,
+	name:_striped_name,
+	display:_striped_display,
+	text_import_area_count:_striped_text_import_area_count,
+	text_import:_striped_text_import,
+	text_export:_striped_text_export,
+	merge_segments:_striped_merge_segments,
 #ifdef DEVMAPPER_SUPPORT
-	add_target_line:_add_target_line,
-	target_present:_target_present,
+	add_target_line:_striped_add_target_line,
+	target_present:_striped_target_present,
 #endif
-	destroy:_destroy,
+	destroy:_striped_destroy,
 };
 
 struct segment_type *init_striped_segtype(struct cmd_context *cmd)

lib/zero/zero.c

@@ -24,12 +24,12 @@
 #include "lvm-string.h"
 #include "activate.h"
 
-static const char *_name(const struct lv_segment *seg)
+static const char *_zero_name(const struct lv_segment *seg)
 {
 	return seg->segtype->name;
 }
 
-static int _merge_segments(struct lv_segment *seg1, struct lv_segment *seg2)
+static int _zero_merge_segments(struct lv_segment *seg1, struct lv_segment *seg2)
 {
 	seg1->len += seg2->len;
 	seg1->area_len += seg2->area_len;
@@ -38,7 +38,7 @@ static int _merge_segments(struct lv_segment *seg1, struct lv_segment *seg2)
 }
 
 #ifdef DEVMAPPER_SUPPORT
-static int _add_target_line(struct dev_manager *dm, struct dm_pool *mem,
+static int _zero_add_target_line(struct dev_manager *dm, struct dm_pool *mem,
                                 struct config_tree *cft, void **target_state,
                                 struct lv_segment *seg,
                                 struct dm_tree_node *node, uint64_t len,
@@ -47,32 +47,33 @@ static int _add_target_line(struct dev_manager *dm, struct dm_pool *mem,
 	return dm_tree_node_add_zero_target(node, len);
 }
 
-static int _target_present(void)
+static int _zero_target_present(void)
 {
-	static int checked = 0;
-	static int present = 0;
+	static int _zero_checked = 0;
+	static int _zero_present = 0;
 
-	if (!checked)
-		present = target_present("zero", 0);
+	if (!_zero_checked)
+		_zero_present = target_present("zero", 0);
 
-	checked = 1;
-	return present;
+	_zero_checked = 1;
+
+	return _zero_present;
 }
 #endif
 
-static void _destroy(const struct segment_type *segtype)
+static void _zero_destroy(const struct segment_type *segtype)
 {
 	dm_free((void *) segtype);
 }
 
 static struct segtype_handler _zero_ops = {
-	name:_name,
-	merge_segments:_merge_segments,
+	name:_zero_name,
+	merge_segments:_zero_merge_segments,
 #ifdef DEVMAPPER_SUPPORT
-	add_target_line:_add_target_line,
-	target_present:_target_present,
+	add_target_line:_zero_add_target_line,
+	target_present:_zero_target_present,
 #endif
-	destroy:_destroy,
+	destroy:_zero_destroy,
 };
 
 struct segment_type *init_zero_segtype(struct cmd_context *cmd)

libdm/.exported_symbols

@@ -2,6 +2,7 @@ dm_lib_release
 dm_lib_exit
 dm_driver_version
 dm_get_library_version
+dm_log
 dm_log_init
 dm_log_init_verbose
 dm_task_create
@@ -22,9 +23,14 @@ dm_task_set_major
 dm_task_set_minor
 dm_task_set_sector
 dm_task_set_message
+dm_task_set_uid
+dm_task_set_gid
+dm_task_set_mode
+dm_task_suppress_identical_reload
 dm_task_add_target
 dm_task_no_open_count
 dm_task_skip_lockfs
+dm_task_update_nodes
 dm_task_run
 dm_get_next_target
 dm_set_dev_dir
@@ -58,14 +64,16 @@ dm_tree_node_add_striped_target
 dm_tree_node_add_mirror_target
 dm_tree_node_add_mirror_target_log
 dm_tree_node_add_target_area
+dm_tree_skip_lockfs
 dm_is_dm_major
 dm_mknodes
 dm_malloc_aux
-dm_strdup
+dm_malloc_aux_debug
+dm_strdup_aux
 dm_free_aux
 dm_realloc_aux
-dm_dump_memory
-dm_bounds_check
+dm_dump_memory_debug
+dm_bounds_check_debug
 dm_pool_create
 dm_pool_destroy
 dm_pool_alloc
@@ -100,3 +108,4 @@ dm_hash_get_data
 dm_hash_get_first
 dm_hash_get_next
 dm_set_selinux_context
+dm_task_set_geometry

libdm/Makefile.in

@@ -17,14 +17,6 @@ top_srcdir = @top_srcdir@
 VPATH = @srcdir@
 interface = @interface@
 
-ifeq ("@DMEVENTD@", "yes")
-   SUBDIRS += event
-endif
-
-ifeq ($(MAKECMDGOALS),distclean)
-  SUBDIRS += event
-endif
-
 SOURCES =\
 	datastruct/bitset.c \
 	datastruct/hash.c \
@@ -50,8 +42,9 @@ CFLAGS += -DDEVICE_UID=@DEVICE_UID@ -DDEVICE_GID=@DEVICE_GID@ \
 
 include ../make.tmpl
 
-.PHONY: install_dynamic install_static \
-	install_fs install_ioctl install_ioctl_static
+.PHONY: install_dynamic install_static install_include \
+	install_fs install_ioctl install_ioctl_static \
+	install_pkgconfig
 
 INSTALL_TYPE = install_dynamic
 
@@ -59,18 +52,22 @@ ifeq ("@STATIC_LINK@", "yes")
   INSTALL_TYPE += install_static
 endif
 
-install: $(INSTALL_TYPE)
+ifeq ("@PKGCONFIG@", "yes")
+  INSTALL_TYPE += install_pkgconfig
+endif
+
+install: $(INSTALL_TYPE) install_include
+
+install_include:
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 444 libdevmapper.h \
+		$(includedir)/libdevmapper.h
 
 install_dynamic: install_@interface@
 	$(LN_S) -f libdevmapper.$(LIB_SUFFIX).$(LIB_VERSION) \
 		$(libdir)/libdevmapper.$(LIB_SUFFIX)
-	$(INSTALL) -D $(OWNER) $(GROUP) -m 444 libdevmapper.h \
-		$(includedir)/libdevmapper.h
 
 install_static: install_@interface@_static
 	$(LN_S) -f libdevmapper.a.$(LIB_VERSION) $(libdir)/libdevmapper.a
-	$(INSTALL) -D $(OWNER) $(GROUP) -m 444 libdevmapper.h \
-		$(includedir)/libdevmapper.h
 
 install_fs: fs/libdevmapper.$(LIB_SUFFIX)
 	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
@@ -80,6 +77,10 @@ install_ioctl: ioctl/libdevmapper.$(LIB_SUFFIX)
 	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
 		$(libdir)/libdevmapper.$(LIB_SUFFIX).$(LIB_VERSION)
 
+install_pkgconfig:
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 444 libdevmapper.pc \
+		$(usrlibdir)/pkgconfig/devmapper.pc
+
 install_ioctl_static: ioctl/libdevmapper.a
 	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
 		$(libdir)/libdevmapper.a.$(LIB_VERSION)
@@ -87,7 +88,7 @@ install_ioctl_static: ioctl/libdevmapper.a
 .PHONY: distclean_lib distclean
 
 distclean_lib: 
-	$(RM) libdm-common.h
+	$(RM) libdm-common.h libdevmapper.pc
 
 distclean: distclean_lib
 

libdm/datastruct/bitset.c

@@ -57,7 +57,7 @@ void dm_bit_union(dm_bitset_t out, dm_bitset_t in1, dm_bitset_t in2)
  */
 static inline int _test_word(uint32_t test, int bit)
 {
-	while (bit < DM_BITS_PER_INT) {
+	while (bit < (int) DM_BITS_PER_INT) {
 		if (test & (0x1 << bit))
 			return bit;
 		bit++;
@@ -73,7 +73,10 @@ int dm_bit_get_next(dm_bitset_t bs, int last_bit)
 
 	last_bit++;		/* otherwise we'll return the same bit again */
 
-	while (last_bit < bs[0]) {
+	/*
+	 * bs[0] holds number of bits
+	 */
+	while (last_bit < (int) bs[0]) {
 		word = last_bit >> INT_SHIFT;
 		test = bs[word + 1];
 		bit = last_bit & (DM_BITS_PER_INT - 1);