man: minor fixes in lvmetad man page

- better add reference to lvm dumpconfig --type default
   than stating that lvmetad is not enabled by default
 - substitute #DEFAULT_PID_DIR# with concrete value

aclocal.m4

@@ -212,4 +212,19 @@ m4_popdef([pkg_default])
 m4_popdef([pkg_description])
 ]) dnl PKG_NOARCH_INSTALLDIR
 
+
+# PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
+# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+# -------------------------------------------
+# Retrieves the value of the pkg-config variable for the given module.
+AC_DEFUN([PKG_CHECK_VAR],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
+
+_PKG_CONFIG([$1], [variable="][$3]["], [$2])
+AS_VAR_COPY([$1], [pkg_cv_][$1])
+
+AS_VAR_IF([$1], [""], [$5], [$4])dnl
+])# PKG_CHECK_VAR
+
 m4_include([acinclude.m4])

configure

@@ -697,6 +697,7 @@ DMEVENTD
 DL_LIBS
 DEVMAPPER
 DEFAULT_RUN_DIR
+DEFAULT_PID_DIR
 DEFAULT_DM_RUN_DIR
 DEFAULT_LOCK_DIR
 DEFAULT_DATA_ALIGNMENT
@@ -11537,6 +11538,7 @@ LVM_LIBAPI=`echo "$VER" | $AWK -F '[()]' '{print $2}'`
 
 
 
+
 
 
 ################################################################################

configure.in

@@ -1674,6 +1674,7 @@ AC_SUBST(DEFAULT_PROFILE_SUBDIR)
 AC_SUBST(DEFAULT_DATA_ALIGNMENT)
 AC_SUBST(DEFAULT_LOCK_DIR)
 AC_SUBST(DEFAULT_DM_RUN_DIR)
+AC_SUBST(DEFAULT_PID_DIR)
 AC_SUBST(DEFAULT_RUN_DIR)
 AC_SUBST(DEVMAPPER)
 AC_SUBST(DLM_CFLAGS)

man/Makefile.in

@@ -96,7 +96,7 @@ $(MAN5) $(MAN7) $(MAN8) $(MAN8DM) $(MAN8CLUSTER):	Makefile
 %: %.in
 	@case "$@" in \
 	  */*) ;; \
-	  *) echo "Creating $@" ; $(SED) -e "s+#VERSION#+$(LVM_VERSION)+;s+#DEFAULT_SYS_DIR#+$(DEFAULT_SYS_DIR)+;s+#DEFAULT_ARCHIVE_DIR#+$(DEFAULT_ARCHIVE_DIR)+;s+#DEFAULT_BACKUP_DIR#+$(DEFAULT_BACKUP_DIR)+;s+#DEFAULT_PROFILE_DIR#+$(DEFAULT_PROFILE_DIR)+;s+#DEFAULT_CACHE_DIR#+$(DEFAULT_CACHE_DIR)+;s+#DEFAULT_LOCK_DIR#+$(DEFAULT_LOCK_DIR)+;s+#CLVMD_PATH#+@CLVMD_PATH@+;s+#LVM_PATH#+@LVM_PATH@+;s+#DEFAULT_RUN_DIR#+@DEFAULT_RUN_DIR@+;s+#SYSTEMD_GENERATOR_DIR#+$(SYSTEMD_GENERATOR_DIR)+;" $< > $@ ;; \
+	  *) echo "Creating $@" ; $(SED) -e "s+#VERSION#+$(LVM_VERSION)+;s+#DEFAULT_SYS_DIR#+$(DEFAULT_SYS_DIR)+;s+#DEFAULT_ARCHIVE_DIR#+$(DEFAULT_ARCHIVE_DIR)+;s+#DEFAULT_BACKUP_DIR#+$(DEFAULT_BACKUP_DIR)+;s+#DEFAULT_PROFILE_DIR#+$(DEFAULT_PROFILE_DIR)+;s+#DEFAULT_CACHE_DIR#+$(DEFAULT_CACHE_DIR)+;s+#DEFAULT_LOCK_DIR#+$(DEFAULT_LOCK_DIR)+;s+#CLVMD_PATH#+@CLVMD_PATH@+;s+#LVM_PATH#+@LVM_PATH@+;s+#DEFAULT_RUN_DIR#+@DEFAULT_RUN_DIR@+;s+#DEFAULT_PID_DIR#+@DEFAULT_PID_DIR@+;s+#SYSTEMD_GENERATOR_DIR#+$(SYSTEMD_GENERATOR_DIR)+;" $< > $@ ;; \
 	esac
 
 install_man5: $(MAN5)

man/lvmetad.8.in

@@ -19,7 +19,10 @@ from udev rules (which must be installed for LVM to work correctly when lvmetad
 is in use). Through these notifications, lvmetad has an up-to-date and
 consistent image of the volume groups available in the system.
 
-By default, lvmetad, even if running, is not used by LVM. See \fBlvm.conf\fP(5).
+lvmetad is used by LVM only if it is enabled in \fBlvm.conf\fP(5) by specifying the
+\fBglobal/use_lvmetad\fP setting. If this is not defined in the LVM configuration
+explicitly then default setting is used instead (see the output of
+\fBlvm dumpconfig --type default global/use_lvmetad\fP command).
 .SH OPTIONS
 
 To run the daemon in a test environment both the pidfile_path and the