mirror of
git://sourceware.org/git/lvm2.git
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add fixed event activation services
Add two new fixed activation services for startup: lvm-activate-vgs-main and lvm-activate-vgs-last. The -main service runs early, without service dependencies. The -last service runs later, after other services have started (other services that may set up devices for PVs, like mulitpathd.) The lvm-activate-vgs services both run "vgchange -aay" to activate all VGs that are preset and complete at the time of system startup. When there are many VGs, these two vgchange commands will replace many per-VG vgchange commands. The last service enables event activation by creating the file /run/lvm/event-activation-on. After that, new devices that appear will be processed by event based autoactivation commands. Prior to the existence of the event-activation-on file, event-based commands do nothing. lvm.conf event_activation_options can be used to configure service-based activation only, or event-based activation only, or the approach described above which begins with service based activation and then switches to event-based. service_only: only the -main and -last services will activate VGs. VGs on devices that appear later will not be autoactivated. event_only: the -main and -last services will not activate any VGs, and all VGs will be activated from per-VG event-based activation commands. service_to_event: the -main and -last services will activate VGs that are complete at the time the services run, and VGs that appear later will be activated from per-VG event-based activation commands.
This commit is contained in:
David Teigland
parent
566d576c09
commit
f3c1ce4d35
44
configure.ac
44
configure.ac
@ -781,39 +781,6 @@ AC_ARG_WITH(default-run-dir,
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AC_DEFINE_UNQUOTED(DEFAULT_RUN_DIR, ["$DEFAULT_RUN_DIR"],
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[Default LVM run directory.])
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################################################################################
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dnl -- Build cluster mirror log daemon
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AC_MSG_CHECKING(whether to build cluster mirror log daemon)
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AC_ARG_ENABLE(cmirrord,
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AS_HELP_STRING([--enable-cmirrord],
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[enable the cluster mirror log daemon]),
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CMIRRORD=$enableval, CMIRRORD=no)
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AC_MSG_RESULT($CMIRRORD)
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BUILD_CMIRRORD=$CMIRRORD
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################################################################################
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dnl -- cmirrord pidfile
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if test "$BUILD_CMIRRORD" = yes; then
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AC_ARG_WITH(cmirrord-pidfile,
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AS_HELP_STRING([--with-cmirrord-pidfile=PATH],
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[cmirrord pidfile [PID_DIR/cmirrord.pid]]),
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CMIRRORD_PIDFILE=$withval,
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CMIRRORD_PIDFILE="$DEFAULT_PID_DIR/cmirrord.pid")
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AC_DEFINE_UNQUOTED(CMIRRORD_PIDFILE, ["$CMIRRORD_PIDFILE"],
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[Path to cmirrord pidfile.])
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fi
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################################################################################
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dnl -- Look for corosync libraries if required.
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if [[ "$BUILD_CMIRRORD" = yes ]]; then
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pkg_config_init
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if test "$HAVE_CPG" != yes; then
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PKG_CHECK_MODULES(CPG, libcpg)
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fi
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fi
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################################################################################
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dnl -- Enable debugging
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AC_MSG_CHECKING(whether to enable debugging)
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@ -1655,10 +1622,6 @@ fi
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AC_MSG_CHECKING(whether to enable editline)
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AC_MSG_RESULT($EDITLINE)
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if test "$BUILD_CMIRRORD" = yes; then
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AC_CHECK_FUNCS(atexit,,hard_bailout)
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fi
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if test "$BUILD_LVMLOCKD" = yes; then
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AS_IF([test "$HAVE_REALTIME" != yes], [AC_MSG_ERROR([Realtime clock support is mandatory for lvmlockd.])])
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AC_CHECK_FUNCS(strtoull,,hard_bailout)
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@ -1834,7 +1797,6 @@ AC_ARG_VAR([UDEV_LIBS], [linker flags for udev])
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################################################################################
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AC_SUBST(AWK)
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AC_SUBST(BLKID_PC)
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AC_SUBST(BUILD_CMIRRORD)
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AC_SUBST(BUILD_DMEVENTD)
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AC_SUBST(BUILD_LVMDBUSD)
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AC_SUBST(BUILD_LVMPOLLD)
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@ -1967,7 +1929,6 @@ AC_SUBST(WRITE_INSTALL)
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AC_SUBST(DMEVENTD_PIDFILE)
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AC_SUBST(LVMPOLLD_PIDFILE)
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AC_SUBST(LVMLOCKD_PIDFILE)
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AC_SUBST(CMIRRORD_PIDFILE)
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AC_SUBST(interface)
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AC_SUBST(kerneldir)
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AC_SUBST(missingkernel)
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@ -1989,7 +1950,6 @@ Makefile
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make.tmpl
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libdm/make.tmpl
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daemons/Makefile
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daemons/cmirrord/Makefile
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daemons/dmeventd/Makefile
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daemons/dmeventd/libdevmapper-event.pc
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daemons/dmeventd/plugins/Makefile
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@ -2023,14 +1983,14 @@ libdm/libdevmapper.pc
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man/Makefile
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po/Makefile
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scripts/lvm2-pvscan.service
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scripts/lvm-activate-vgs-main.service
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scripts/lvm-activate-vgs-last.service
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scripts/blkdeactivate.sh
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scripts/blk_availability_init_red_hat
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scripts/blk_availability_systemd_red_hat.service
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scripts/cmirrord_init_red_hat
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scripts/com.redhat.lvmdbus1.service
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scripts/dm_event_systemd_red_hat.service
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scripts/dm_event_systemd_red_hat.socket
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scripts/lvm2_cmirrord_systemd_red_hat.service
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scripts/lvm2_lvmdbusd_systemd_red_hat.service
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scripts/lvm2_lvmpolld_init_red_hat
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scripts/lvm2_lvmpolld_systemd_red_hat.service
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@ -1130,6 +1130,18 @@ cfg(global_event_activation_CFG, "event_activation", global_CFG_SECTION, CFG_DEF
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"See the --setautoactivation option or the auto_activation_volume_list\n"
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"setting to configure autoactivation for specific VGs or LVs.\n")
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cfg_array(global_event_activation_options_CFG, "event_activation_options", global_CFG_SECTION, CFG_ALLOW_EMPTY | CFG_DEFAULT_COMMENTED, CFG_TYPE_STRING, DEFAULT_EVENT_ACTIVATION_OPTIONS, vsn(2, 3, 14), NULL, 0, NULL,
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"Set event activation options.\n"
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"service_to_event: begin with fixed activation services,\n"
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"then switch to event based activation.\n"
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"event_only: only use event based activation.\n"
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"service_only: only use fixed activation services.\n"
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"(This is equivalent to event_activation=0.)\n"
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"Autoactivation commands should set --eventactivation service|event\n"
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"to indicate if they are performing service or event activation.\n"
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"An autoactivation command may then be skipped according to the\n"
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"value of this setting.\n")
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cfg(global_use_lvmetad_CFG, "use_lvmetad", global_CFG_SECTION, CFG_DEFAULT_COMMENTED, CFG_TYPE_BOOL, 0, vsn(2, 2, 93), 0, vsn(2, 3, 0), NULL,
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NULL)
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@ -328,4 +328,7 @@
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#define DEFAULT_WWIDS_FILE "/etc/multipath/wwids"
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#define DEFAULT_EVENT_ACTIVATION_OPTION1 "service_to_event"
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#define DEFAULT_EVENT_ACTIVATION_OPTIONS "#S" DEFAULT_EVENT_ACTIVATION_OPTION1
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#endif /* _LVM_DEFAULTS_H */
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@ -1130,6 +1130,9 @@ int label_scan(struct cmd_context *cmd)
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}
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}
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}
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log_debug_devs("Filtering devices to scan done (nodata)");
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cmd->filter_nodata_only = 0;
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dm_list_iterate_items(devl, &all_devs)
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@ -15,9 +15,6 @@ srcdir = @srcdir@
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top_srcdir = @top_srcdir@
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top_builddir = @top_builddir@
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SOURCES = lvm2_activation_generator_systemd_red_hat.c
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TARGETS = lvm2_activation_generator_systemd_red_hat
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include $(top_builddir)/make.tmpl
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ifeq ("@BUILD_DMEVENTD@", "yes")
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@ -66,7 +63,7 @@ install_initscripts:
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@echo " [INSTALL] initscripts"
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$(Q) $(INSTALL_DIR) $(initdir)
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ifeq ("@BUILD_DMEVENTD@", "yes")
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$(Q) $(INSTALL_SCRIPT) lvm2_monitoring_init_red_hat $(initdir)/lvm2-monitor
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$(Q) $(INSTALL_SCRIPT) lvm2_monitoring_init_red_hat $(initdir)/lvm-monitor
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endif
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ifeq ("@BUILD_LVMPOLLD@", "yes")
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$(Q) $(INSTALL_SCRIPT) lvm2_lvmpolld_init_red_hat $(initdir)/lvm2-lvmpolld
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@ -78,24 +75,15 @@ ifeq ("@BLKDEACTIVATE@", "yes")
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$(Q) $(INSTALL_SCRIPT) blk_availability_init_red_hat $(initdir)/blk-availability
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endif
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CFLAGS_lvm2_activation_generator_systemd_red_hat.o += $(EXTRA_EXEC_CFLAGS)
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lvm2_activation_generator_systemd_red_hat: $(OBJECTS) $(LVMINTERNAL_LIBS)
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@echo " [CC] $@"
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$(Q) $(CC) -o $@ $(OBJECTS) $(CFLAGS) $(LDFLAGS) $(EXTRA_EXEC_LDFLAGS) $(ELDFLAGS) $(LVMINTERNAL_LIBS) $(LIBS)
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install_systemd_generators:
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@echo " [INSTALL] systemd_generators"
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$(Q) $(INSTALL_DIR) $(systemd_generator_dir)
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$(Q) $(INSTALL_PROGRAM) lvm2_activation_generator_systemd_red_hat $(systemd_generator_dir)/lvm2-activation-generator
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install_systemd_units: install_dbus_service
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@echo " [INSTALL] systemd_units"
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$(Q) $(INSTALL_DIR) $(systemd_unit_dir)
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$(Q) $(INSTALL_DATA) lvm-activate-vgs-main.service $(systemd_unit_dir)/lvm-activate-vgs-main.service
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$(Q) $(INSTALL_DATA) lvm-activate-vgs-last.service $(systemd_unit_dir)/lvm-activate-vgs-last.service
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ifeq ("@BUILD_DMEVENTD@", "yes")
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$(Q) $(INSTALL_DATA) dm_event_systemd_red_hat.socket $(systemd_unit_dir)/dm-event.socket
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$(Q) $(INSTALL_DATA) dm_event_systemd_red_hat.service $(systemd_unit_dir)/dm-event.service
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$(Q) $(INSTALL_DATA) lvm2_monitoring_systemd_red_hat.service $(systemd_unit_dir)/lvm2-monitor.service
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$(Q) $(INSTALL_DATA) lvm2_monitoring_systemd_red_hat.service $(systemd_unit_dir)/lvm-monitor.service
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endif
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ifeq ("@BLKDEACTIVATE@", "yes")
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$(Q) $(INSTALL_DATA) blk_availability_systemd_red_hat.service $(systemd_unit_dir)/blk-availability.service
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@ -155,7 +143,9 @@ DISTCLEAN_TARGETS += \
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lvm2_monitoring_init_red_hat \
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lvm2_monitoring_systemd_red_hat.service \
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lvm2_pvscan_systemd_red_hat@.service \
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lvm2_tmpfiles_red_hat.conf
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lvm2_tmpfiles_red_hat.conf \
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lvm-activate-vgs-main.service \
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lvm-activate-vgs-last.service
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# Remove ancient files
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DISTCLEAN_TARGETS += \
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@ -1,7 +1,7 @@
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[Unit]
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Description=Availability of block devices
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Before=shutdown.target
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After=lvm2-activation.service iscsi-shutdown.service iscsi.service iscsid.service fcoe.service rbdmap.service
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After=lvm-activate-vgs-main.service lvm-activate-vgs-last.service iscsi-shutdown.service iscsi.service iscsid.service fcoe.service rbdmap.service
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DefaultDependencies=no
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Conflicts=shutdown.target
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22
scripts/lvm-activate-vgs-last.service.in
Normal file
22
scripts/lvm-activate-vgs-last.service.in
Normal file
@ -0,0 +1,22 @@
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[Unit]
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Description=Activate LVM Volume Groups (last)
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Documentation=man:vgchange(8)
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Wants=systemd-udev-settle.service
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After=lvm-activate-vgs-main.service systemd-udev-settle.service multipathd.service cryptsetup.target
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Before=local-fs-pre.target shutdown.target
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DefaultDependencies=no
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Conflicts=shutdown.target
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# "--eventactivation service" tells vgchange it is being called
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# from an activation service, so it will do nothing if
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# lvm.conf event_activation_options = "event_only".
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# "--eventactivation on" tells vgchange to enable event-based
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# pvscan activations by creating /run/lvm/event-activation-on.
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[Service]
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Type=oneshot
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ExecStart=@SBINDIR@/lvm vgchange -aay --nohints --vgonline --eventactivation service,on
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RemainAfterExit=yes
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[Install]
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WantedBy=sysinit.target
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19
scripts/lvm-activate-vgs-main.service.in
Normal file
19
scripts/lvm-activate-vgs-main.service.in
Normal file
@ -0,0 +1,19 @@
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[Unit]
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Description=Activate LVM Volume Groups
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Documentation=man:vgchange(8)
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After=dm-event.socket dm-event.service
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Before=local-fs-pre.target shutdown.target
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DefaultDependencies=no
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Conflicts=shutdown.target
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# "--eventactivation service" tells vgchange it is being called
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# from an activation service, so it will do nothing if
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# lvm.conf event_activation_options = "event_only".
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[Service]
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Type=oneshot
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ExecStart=@SBINDIR@/lvm vgchange -aay --nohints --vgonline --eventactivation service
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RemainAfterExit=yes
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[Install]
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WantedBy=sysinit.target
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@ -1,8 +1,8 @@
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[Unit]
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Description=Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling
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Description=Monitor LVM Logical Volumes
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Documentation=man:dmeventd(8) man:lvcreate(8) man:lvchange(8) man:vgchange(8)
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Requires=dm-event.socket
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After=dm-event.socket dm-event.service lvm2-activation.service
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After=dm-event.socket dm-event.service lvm-activate-vgs-last.service
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Before=local-fs-pre.target shutdown.target
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DefaultDependencies=no
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Conflicts=shutdown.target
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@ -23,10 +23,10 @@ if [ $1 = 0 ]; then
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fi
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%triggerun -- %{name} < 2.02.86-2
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%{_bindir}/systemd-sysv-convert --save lvm2-monitor >/dev/null 2>&1 || :
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/bin/systemctl --no-reload enable lvm2-monitor.service > /dev/null 2>&1 || :
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/sbin/chkconfig --del lvm2-monitor > /dev/null 2>&1 || :
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/bin/systemctl try-restart lvm2-monitor.service > /dev/null 2>&1 || :
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%{_bindir}/systemd-sysv-convert --save lvm-monitor >/dev/null 2>&1 || :
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/bin/systemctl --no-reload enable lvm-monitor.service > /dev/null 2>&1 || :
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/sbin/chkconfig --del lvm-monitor > /dev/null 2>&1 || :
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/bin/systemctl try-restart lvm-monitor.service > /dev/null 2>&1 || :
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# files in the main package
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%files
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@ -100,9 +100,6 @@ fi
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%{_mandir}/man8/lvm-config.8.gz
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%{_mandir}/man8/lvm-dumpconfig.8.gz
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%{_mandir}/man8/lvm.8.gz
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%if %{enable_systemd}
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%{_mandir}/man8/lvm2-activation-generator.8.gz
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%endif
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%{_mandir}/man8/lvmconfig.8.gz
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%{_mandir}/man8/lvmdevices.8.gz
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%{_mandir}/man8/lvmdiskscan.8.gz
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@ -187,16 +184,17 @@ fi
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%dir %{_default_run_dir}
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%if %{enable_systemd}
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%{_tmpfilesdir}/%{name}.conf
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%{_unitdir}/lvm-activate-vgs-main.service
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%{_unitdir}/lvm-activate-vgs-last.service
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%{_unitdir}/lvm-monitor.service
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%{_unitdir}/blk-availability.service
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%{_unitdir}/lvm2-monitor.service
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%attr(555, -, -) %{_prefix}/lib/systemd/system-generators/lvm2-activation-generator
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%if %{have_service lvmpolld}
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%{_unitdir}/lvm2-lvmpolld.service
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%{_unitdir}/lvm2-lvmpolld.socket
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%endif
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%else
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%{_sysconfdir}/rc.d/init.d/blk-availability
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%{_sysconfdir}/rc.d/init.d/lvm2-monitor
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%{_sysconfdir}/rc.d/init.d/lvm-monitor
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%if %{have_service lvmpolld}
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%{_sysconfdir}/rc.d/init.d/lvm2-lvmpolld
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%endif
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@ -278,6 +278,11 @@ arg(errorwhenfull_ARG, '\0', "errorwhenfull", bool_VAL, 0, 0,
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"(Also see dm-thin-pool kernel module option no_space_timeout.)\n"
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"See \\fBlvmthin\\fP(7) for more information.\n")
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arg(eventactivation_ARG, '\0', "eventactivation", string_VAL, 0, 0,
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"Specify if the command is running autoactivation from an event\n"
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"or a fixed service. The lvm.conf event_activation_options setting\n"
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"determines if event or service based activation commands are used.\n")
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arg(force_long_ARG, '\0', "force", 0, ARG_COUNTABLE, 0,
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"Force metadata restore even with thin pool LVs.\n"
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"Use with extreme caution. Most changes to thin metadata\n"
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@ -1642,14 +1642,15 @@ DESC: Record that a PV is online or offline.
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pvscan --cache_long --activate ay
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OO: --ignorelockingfailure, --reportformat ReportFmt,
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--major Number, --minor Number, --noudevsync
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--major Number, --minor Number, --noudevsync, --eventactivation String
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OP: PV|String ...
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IO: --background
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ID: pvscan_cache
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DESC: Record that a PV is online and autoactivate the VG if complete.
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pvscan --cache_long --listvg PV
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OO: --ignorelockingfailure, --checkcomplete, --vgonline, --udevoutput
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OO: --ignorelockingfailure, --checkcomplete, --vgonline, --udevoutput,
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--eventactivation String
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ID: pvscan_cache
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DESC: Record that a PV is online and list the VG using the PV.
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@ -1747,7 +1748,8 @@ DESC: Start or stop processing LV conversions.
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vgchange --activate Active
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OO: --activationmode ActivationMode, --ignoreactivationskip, --partial, --sysinit,
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--readonly, --ignorelockingfailure, --monitor Bool, --poll Bool, --vgonline, OO_VGCHANGE
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--readonly, --ignorelockingfailure, --monitor Bool, --poll Bool,
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--vgonline, --eventactivation String, OO_VGCHANGE
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OP: VG|Tag|Select ...
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IO: --ignoreskippedcluster
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ID: vgchange_activate
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127
tools/pvscan.c
127
tools/pvscan.c
@ -46,6 +46,8 @@ static const char *_pvs_online_dir = DEFAULT_RUN_DIR "/pvs_online";
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static const char *_vgs_online_dir = DEFAULT_RUN_DIR "/vgs_online";
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static const char *_pvs_lookup_dir = DEFAULT_RUN_DIR "/pvs_lookup";
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static const char *_event_activation_file = DEFAULT_RUN_DIR "/event-activation-on";
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static int _pvscan_display_pv(struct cmd_context *cmd,
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struct physical_volume *pv,
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struct pvscan_params *params)
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@ -179,6 +181,84 @@ out:
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return ret;
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}
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|
||||
/*
|
||||
* Event based activation
|
||||
* lvm.conf event_activation_options = "event_only"
|
||||
* . all events are used for activation
|
||||
* . no fixed services are used for activation
|
||||
* . lvm.conf event_activation=1 required
|
||||
*
|
||||
* vgchange -aay --eventactivation service
|
||||
* . does nothing
|
||||
* vgchange -aay --eventactivation event
|
||||
* . does activation
|
||||
* pvscan --eventactivation event
|
||||
* . does activation
|
||||
*
|
||||
* ---
|
||||
*
|
||||
* Non-event based activation
|
||||
* lvm.conf event_activation_options = "service_only"
|
||||
* . fixed services are used for activation
|
||||
* . no events are used for activation
|
||||
* . lvm.conf event_activation=0 is equivalent to
|
||||
* event_activation=1 event_activation_options="service_only"
|
||||
*
|
||||
* vgchange -aay --eventactivation service
|
||||
* . does activation
|
||||
* vgchange -aay --eventactivation event
|
||||
* . does nothing
|
||||
* pvscan --eventactivation event
|
||||
* . does nothing
|
||||
*
|
||||
* ---
|
||||
*
|
||||
* Mix of event and non-event based activation
|
||||
* lvm.conf event_activation_options = "service_to_event"
|
||||
* . both services and events are used for activation
|
||||
* . fixed services are used for activation initially,
|
||||
* and last service enables event based activation
|
||||
* by creating the event-activation-on file
|
||||
*
|
||||
* vgchange -aay --eventactivation service
|
||||
* . does activation only if event-activation-on does not exist
|
||||
* vgchange -aay --eventactivation event
|
||||
* . does activation only if event-activation-on exists
|
||||
* vgchange -aay --eventactivation service,on
|
||||
* . does activation only if event-activation-on does not exist
|
||||
* . creates event-activation-on to enable event-based activation
|
||||
* vgchange --eventactivation on|off
|
||||
* . create or remove event-activation-on to enable|disable
|
||||
* event-based activation
|
||||
* pvscan --eventactivation event
|
||||
* . does activation only if event-activation-on exists
|
||||
*
|
||||
*/
|
||||
|
||||
int event_activation_enable(struct cmd_context *cmd)
|
||||
{
|
||||
FILE *fp;
|
||||
|
||||
if (!(fp = fopen(_event_activation_file, "w")))
|
||||
return_0;
|
||||
if (fclose(fp))
|
||||
stack;
|
||||
return 1;
|
||||
}
|
||||
|
||||
int event_activation_is_on(struct cmd_context *cmd)
|
||||
{
|
||||
struct stat buf;
|
||||
|
||||
if (!stat(_event_activation_file, &buf))
|
||||
return 1;
|
||||
|
||||
if (errno != ENOENT)
|
||||
log_debug("event_activation_is_on errno %d", errno);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Avoid a duplicate pvscan[%d] prefix when logging to the journal.
|
||||
* FIXME: this should probably replace if (udevoutput) with
|
||||
@ -367,7 +447,7 @@ static void _online_files_remove(const char *dirpath)
|
||||
log_sys_debug("closedir", dirpath);
|
||||
}
|
||||
|
||||
static int _online_pvid_file_create(struct cmd_context *cmd, struct device *dev, const char *vgname)
|
||||
int online_pvid_file_create(struct cmd_context *cmd, struct device *dev, const char *vgname, int ignore_existing, int *exists)
|
||||
{
|
||||
char path[PATH_MAX];
|
||||
char buf[MAX_PVID_FILE_SIZE] = { 0 };
|
||||
@ -407,8 +487,13 @@ static int _online_pvid_file_create(struct cmd_context *cmd, struct device *dev,
|
||||
|
||||
fd = open(path, O_CREAT | O_EXCL | O_RDWR, S_IRUSR | S_IWUSR);
|
||||
if (fd < 0) {
|
||||
if (errno == EEXIST)
|
||||
if (errno == EEXIST) {
|
||||
if (exists)
|
||||
*exists = 1;
|
||||
if (ignore_existing)
|
||||
return 1;
|
||||
goto check_duplicate;
|
||||
}
|
||||
log_error_pvscan(cmd, "Failed to create online file for %s path %s error %d", dev_name(dev), path, errno);
|
||||
return 0;
|
||||
}
|
||||
@ -427,7 +512,6 @@ static int _online_pvid_file_create(struct cmd_context *cmd, struct device *dev,
|
||||
}
|
||||
|
||||
/* We don't care about syncing, these files are not even persistent. */
|
||||
|
||||
if (close(fd))
|
||||
log_sys_debug("close", path);
|
||||
|
||||
@ -748,7 +832,7 @@ static int _pvscan_aa_single(struct cmd_context *cmd, const char *vg_name,
|
||||
|
||||
log_debug("pvscan autoactivating VG %s.", vg_name);
|
||||
|
||||
if (!vgchange_activate(cmd, vg, CHANGE_AAY)) {
|
||||
if (!vgchange_activate(cmd, vg, CHANGE_AAY, 1)) {
|
||||
log_error_pvscan(cmd, "%s: autoactivation failed.", vg->name);
|
||||
pp->activate_errors++;
|
||||
}
|
||||
@ -1036,7 +1120,7 @@ static int _pvscan_aa_quick(struct cmd_context *cmd, struct pvscan_aa_params *pp
|
||||
|
||||
log_debug("pvscan autoactivating VG %s.", vgname);
|
||||
|
||||
if (!vgchange_activate(cmd, vg, CHANGE_AAY)) {
|
||||
if (!vgchange_activate(cmd, vg, CHANGE_AAY, 1)) {
|
||||
log_error_pvscan(cmd, "%s: autoactivation failed.", vg->name);
|
||||
pp->activate_errors++;
|
||||
}
|
||||
@ -1420,7 +1504,7 @@ static int _online_devs(struct cmd_context *cmd, int do_all, struct dm_list *pvs
|
||||
* Create file named for pvid to record this PV is online.
|
||||
* The command creates/checks online files only when --cache is used.
|
||||
*/
|
||||
if (do_cache && !_online_pvid_file_create(cmd, dev, vg ? vg->name : NULL)) {
|
||||
if (do_cache && !online_pvid_file_create(cmd, dev, vg ? vg->name : NULL, 0, NULL)) {
|
||||
log_error_pvscan(cmd, "PV %s failed to create online file.", dev_name(dev));
|
||||
release_vg(vg);
|
||||
ret = 0;
|
||||
@ -1871,6 +1955,7 @@ int pvscan_cache_cmd(struct cmd_context *cmd, int argc, char **argv)
|
||||
{
|
||||
struct pvscan_aa_params pp = { 0 };
|
||||
struct dm_list complete_vgnames;
|
||||
const char *ea;
|
||||
int do_activate = arg_is_set(cmd, activate_ARG);
|
||||
int event_activation;
|
||||
int devno_args = 0;
|
||||
@ -1944,6 +2029,36 @@ int pvscan_cache_cmd(struct cmd_context *cmd, int argc, char **argv)
|
||||
log_verbose("Ignoring pvscan --cache because event_activation is disabled.");
|
||||
return ECMD_PROCESSED;
|
||||
}
|
||||
|
||||
|
||||
if ((ea = arg_str_value(cmd, eventactivation_ARG, NULL))) {
|
||||
int service_only = 0, event_only = 0, service_to_event = 0;
|
||||
int ea_service = 0, ea_event = 0, ea_on = 0;
|
||||
|
||||
if (!get_event_activation_config_settings(cmd, &service_only, &event_only, &service_to_event))
|
||||
return ECMD_FAILED;
|
||||
if (!get_event_activation_command_options(cmd, ea, &ea_service, &ea_event, &ea_on))
|
||||
return ECMD_FAILED;
|
||||
|
||||
if (ea_event) {
|
||||
if (!event_activation) {
|
||||
log_print_pvscan(cmd, "Skip pvscan for event and event_activation=0.");
|
||||
return ECMD_PROCESSED;
|
||||
}
|
||||
if (service_only) {
|
||||
log_print_pvscan(cmd, "Skip pvscan for event and event_activation_options service_only.");
|
||||
return ECMD_PROCESSED;
|
||||
}
|
||||
if (service_to_event && !event_activation_is_on(cmd)) {
|
||||
log_print_pvscan(cmd, "Skip pvscan for event and no event-activation-on.");
|
||||
return ECMD_PROCESSED;
|
||||
}
|
||||
} else {
|
||||
log_error("Option --eventactivation %s is not used by pvscan.", ea);
|
||||
return ECMD_FAILED;
|
||||
}
|
||||
}
|
||||
|
||||
if (!_pvscan_cache_args(cmd, argc, argv, &complete_vgnames))
|
||||
return ECMD_FAILED;
|
||||
}
|
||||
|
||||
@ -5714,3 +5714,90 @@ bad:
|
||||
out:
|
||||
return 0;
|
||||
}
|
||||
|
||||
int get_event_activation_config_settings(struct cmd_context *cmd,
|
||||
int *service_only, int *event_only, int *service_to_event)
|
||||
{
|
||||
const struct dm_config_node *cn;
|
||||
const struct dm_config_value *cv;
|
||||
int eo = 0, so = 0, se = 0;
|
||||
|
||||
if (!(cn = find_config_tree_array(cmd, global_event_activation_options_CFG, NULL)))
|
||||
return 1;
|
||||
|
||||
for (cv = cn->v; cv; cv = cv->next) {
|
||||
if (cv->type != DM_CFG_STRING)
|
||||
continue;
|
||||
if (!strcmp(cv->v.str, "service_only"))
|
||||
so = 1;
|
||||
else if (!strcmp(cv->v.str, "event_only"))
|
||||
eo = 1;
|
||||
else if (!strcmp(cv->v.str, "service_to_event"))
|
||||
se = 1;
|
||||
else if (strlen(cv->v.str) > 0)
|
||||
log_warn("WARNING: ignoring unrecognized event_activation_options value %s.", cv->v.str);
|
||||
}
|
||||
|
||||
if (se && (so || eo)) {
|
||||
log_warn("WARNING: ignoring incompatible event_activation_options, using service_to_event.");
|
||||
*service_to_event = 1;
|
||||
} else if (so && eo) {
|
||||
log_warn("WARNING: ignoring incompatible event_activation_options, using event_only.");
|
||||
*event_only = 1;
|
||||
} else if (se) {
|
||||
*service_to_event = 1;
|
||||
} else if (so) {
|
||||
*service_only = 1;
|
||||
} else if (eo) {
|
||||
*event_only = 1;
|
||||
} else {
|
||||
*service_to_event = 1;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int _ea_option_value(const char *val, int *ea_service, int *ea_event, int *ea_on)
|
||||
{
|
||||
if (!strcmp(val, "service"))
|
||||
*ea_service = 1;
|
||||
else if (!strcmp(val, "event"))
|
||||
*ea_event = 1;
|
||||
else if (!strcmp(val, "on"))
|
||||
*ea_on = 1;
|
||||
else {
|
||||
log_error("Unknown --eventactivation value.");
|
||||
return 0;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
int get_event_activation_command_options(struct cmd_context *cmd, const char *ea, int *ea_service, int *ea_event, int *ea_on)
|
||||
{
|
||||
char ea_vals[128] = {0};
|
||||
char *val1, *val2;
|
||||
|
||||
strncpy(ea_vals, ea, 127);
|
||||
|
||||
/* Currently only two values can be used together. */
|
||||
|
||||
val1 = ea_vals;
|
||||
|
||||
if ((val2 = strchr(ea_vals, ','))) {
|
||||
*val2 = '\0';
|
||||
val2++;
|
||||
}
|
||||
|
||||
if (val1 && !_ea_option_value(val1, ea_service, ea_event, ea_on))
|
||||
return 0;
|
||||
|
||||
if (val2 && !_ea_option_value(val2, ea_service, ea_event, ea_on))
|
||||
return 0;
|
||||
|
||||
if (*ea_service && *ea_event) {
|
||||
log_error("Invalid --eventactivation options, service and event are incompatible.");
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
@ -237,4 +237,9 @@ int lvremove_single(struct cmd_context *cmd, struct logical_volume *lv,
|
||||
|
||||
int get_lvt_enum(struct logical_volume *lv);
|
||||
|
||||
int get_event_activation_config_settings(struct cmd_context *cmd,
|
||||
int *service_only, int *event_only, int *service_to_event);
|
||||
int get_event_activation_command_options(struct cmd_context *cmd,
|
||||
const char *ea, int *ea_service, int *ea_event, int *ea_on);
|
||||
|
||||
#endif
|
||||
|
||||
@ -226,9 +226,8 @@ int lvconvert_poll(struct cmd_context *cmd, struct logical_volume *lv, unsigned
|
||||
int mirror_remove_missing(struct cmd_context *cmd,
|
||||
struct logical_volume *lv, int force);
|
||||
|
||||
|
||||
int vgchange_activate(struct cmd_context *cmd, struct volume_group *vg,
|
||||
activation_change_t activate);
|
||||
activation_change_t activate, int vg_complete_to_activate);
|
||||
|
||||
int vgchange_background_polling(struct cmd_context *cmd, struct volume_group *vg);
|
||||
|
||||
@ -295,8 +294,11 @@ int lvconvert_cachevol_attach_single(struct cmd_context *cmd,
|
||||
struct logical_volume *lv,
|
||||
struct processing_handle *handle);
|
||||
|
||||
int online_pvid_file_create(struct cmd_context *cmd, struct device *dev, const char *vgname, int ignore_existing, int *exists);
|
||||
void online_vg_file_remove(const char *vgname);
|
||||
int online_vg_file_create(struct cmd_context *cmd, const char *vgname);
|
||||
void online_dir_setup(struct cmd_context *cmd);
|
||||
int event_activation_enable(struct cmd_context *cmd);
|
||||
int event_activation_is_on(struct cmd_context *cmd);
|
||||
|
||||
#endif
|
||||
|
||||
186
tools/vgchange.c
186
tools/vgchange.c
@ -19,6 +19,7 @@
|
||||
struct vgchange_params {
|
||||
int lock_start_count;
|
||||
unsigned int lock_start_sanlock : 1;
|
||||
unsigned int vg_complete_to_activate : 1;
|
||||
};
|
||||
|
||||
/*
|
||||
@ -194,11 +195,47 @@ int vgchange_background_polling(struct cmd_context *cmd, struct volume_group *vg
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int _online_pvid_file_create_all(struct cmd_context *cmd)
|
||||
{
|
||||
struct lvmcache_info *info;
|
||||
struct dev_iter *iter;
|
||||
struct device *dev;
|
||||
const char *vgname;
|
||||
int exists;
|
||||
int exist_count = 0;
|
||||
int create_count = 0;
|
||||
|
||||
if (!(iter = dev_iter_create(NULL, 0)))
|
||||
return 0;
|
||||
while ((dev = dev_iter_get(cmd, iter))) {
|
||||
if (dev->pvid[0] &&
|
||||
(info = lvmcache_info_from_pvid(dev->pvid, dev, 0))) {
|
||||
vgname = lvmcache_vgname_from_info(info);
|
||||
if (vgname && !is_orphan_vg(vgname)) {
|
||||
/*
|
||||
* Ignore exsting pvid file because a pvscan may be creating
|
||||
* the same file as the same time we are, which is expected.
|
||||
*/
|
||||
exists = 0;
|
||||
online_pvid_file_create(cmd, dev, vgname, 1, &exists);
|
||||
if (exists)
|
||||
exist_count++;
|
||||
else
|
||||
create_count++;
|
||||
}
|
||||
}
|
||||
}
|
||||
dev_iter_destroy(iter);
|
||||
log_debug("PV online files created %d exist %d", create_count, exist_count);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int vgchange_activate(struct cmd_context *cmd, struct volume_group *vg,
|
||||
activation_change_t activate)
|
||||
activation_change_t activate, int vg_complete_to_activate)
|
||||
{
|
||||
int lv_open, active, monitored = 0, r = 1;
|
||||
const struct lv_list *lvl;
|
||||
struct pv_list *pvl;
|
||||
int do_activate = is_change_activating(activate);
|
||||
|
||||
/*
|
||||
@ -219,6 +256,20 @@ int vgchange_activate(struct cmd_context *cmd, struct volume_group *vg,
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (arg_is_set(cmd, vgonline_ARG) && !online_vg_file_create(cmd, vg->name)) {
|
||||
log_print("VG %s already online", vg->name);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (do_activate && vg_complete_to_activate) {
|
||||
dm_list_iterate_items(pvl, &vg->pvs) {
|
||||
if (!pvl->pv->dev) {
|
||||
log_print("VG %s is incomplete.", vg->name);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Safe, since we never write out new metadata here. Required for
|
||||
* partial activation to work.
|
||||
@ -262,11 +313,6 @@ int vgchange_activate(struct cmd_context *cmd, struct volume_group *vg,
|
||||
}
|
||||
}
|
||||
|
||||
if (arg_is_set(cmd, vgonline_ARG) && !online_vg_file_create(cmd, vg->name)) {
|
||||
log_print("VG %s finished", vg->name);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (!_activate_lvs_in_vg(cmd, vg, activate)) {
|
||||
stack;
|
||||
r = 0;
|
||||
@ -652,6 +698,7 @@ static int _vgchange_single(struct cmd_context *cmd, const char *vg_name,
|
||||
struct volume_group *vg,
|
||||
struct processing_handle *handle)
|
||||
{
|
||||
struct vgchange_params *vp = (struct vgchange_params *)handle->custom_handle;
|
||||
int ret = ECMD_PROCESSED;
|
||||
unsigned i;
|
||||
activation_change_t activate;
|
||||
@ -709,7 +756,7 @@ static int _vgchange_single(struct cmd_context *cmd, const char *vg_name,
|
||||
|
||||
if (arg_is_set(cmd, activate_ARG)) {
|
||||
activate = (activation_change_t) arg_uint_value(cmd, activate_ARG, 0);
|
||||
if (!vgchange_activate(cmd, vg, activate))
|
||||
if (!vgchange_activate(cmd, vg, activate, vp->vg_complete_to_activate))
|
||||
return_ECMD_FAILED;
|
||||
} else if (arg_is_set(cmd, refresh_ARG)) {
|
||||
/* refreshes the visible LVs (which starts polling) */
|
||||
@ -730,8 +777,113 @@ static int _vgchange_single(struct cmd_context *cmd, const char *vg_name,
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int _check_event_activation(struct cmd_context *cmd, struct vgchange_params *vp, int *skip_command, int *enable_events)
|
||||
{
|
||||
const char *ea;
|
||||
int service_only = 0, event_only = 0, service_to_event = 0;
|
||||
int ea_service = 0, ea_event = 0, ea_on = 0;
|
||||
int on_file_exists;
|
||||
int event_activation;
|
||||
|
||||
if (!(ea = arg_str_value(cmd, eventactivation_ARG, NULL))) {
|
||||
log_error("No eventactivation value.");
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* lvm.conf event_activation_options */
|
||||
if (!get_event_activation_config_settings(cmd, &service_only, &event_only, &service_to_event))
|
||||
return_0;
|
||||
|
||||
/* --eventactivation values */
|
||||
if (!get_event_activation_command_options(cmd, ea, &ea_service, &ea_event, &ea_on))
|
||||
return_0;
|
||||
|
||||
event_activation = find_config_tree_bool(cmd, global_event_activation_CFG, NULL);
|
||||
|
||||
/*
|
||||
* The combination of lvm.conf event_activation/event_activation_options
|
||||
* and the --eventactivation service|event value determines if this
|
||||
* command should do anything or be skipped, along with the existence of
|
||||
* the /run/lvm/event-activation-on file in case of service_to_event.
|
||||
*/
|
||||
if (!event_activation) {
|
||||
if (ea_event) {
|
||||
log_print("Skip vgchange for event and event_activation=0.");
|
||||
*skip_command = 1;
|
||||
return 1;
|
||||
}
|
||||
} else {
|
||||
if (event_only && ea_service) {
|
||||
log_print("Skip vgchange for service and event_activation_options event_only.");
|
||||
*skip_command = 1;
|
||||
return 1;
|
||||
}
|
||||
if (service_only && ea_event) {
|
||||
log_print("Skip vgchange for event and event_activation_options service_only.");
|
||||
*skip_command = 1;
|
||||
return 1;
|
||||
}
|
||||
|
||||
on_file_exists = event_activation_is_on(cmd);
|
||||
|
||||
if (service_to_event && ea_service && on_file_exists) {
|
||||
log_print("Skip vgchange for service and event-activation-on.");
|
||||
*skip_command = 1;
|
||||
return 1;
|
||||
}
|
||||
if (service_to_event && ea_event && !on_file_exists) {
|
||||
log_print("Skip vgchange for event and no event-activation-on.");
|
||||
*skip_command = 1;
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Switch from service activation to event activation when:
|
||||
* lvm.conf event_activation=1,
|
||||
* event_activation_options=service_to_event,
|
||||
* and --eventactivation service,on.
|
||||
*
|
||||
* When enabling event-based activation, first create the
|
||||
* /run/lvm/event-activation-on file to tell other commands
|
||||
* to begin responding to PV events and doing activation
|
||||
* for newly completed VGs. It also needs to create online
|
||||
* files for existing PVs because some VGs may be incomplete
|
||||
* at this point, and future pvscan commands need to
|
||||
* find online files for PVs that have already appeared.
|
||||
* The label scan provides info to know which PVs are
|
||||
* present and should have pvid online files created.
|
||||
*
|
||||
* process_each_vg() usually begins with lock_global() and
|
||||
* lvmcache_label_scan(), and then processes each VG.
|
||||
* In this case, lock_global/lvmcache_label_scan are done
|
||||
* before calling process_each_vg. This allows a special
|
||||
* step to be inserted between the label scan and processing
|
||||
* vgs. That step creates the pvid online files, which
|
||||
* requires label scan info. The lock_global and
|
||||
* lvmcache_label_scan will be skipped by process_each_vg
|
||||
* since they are already done here.
|
||||
*/
|
||||
if (event_activation && service_to_event && ea_service && ea_on) {
|
||||
if (!event_activation_enable(cmd))
|
||||
log_warn("WARNING: Failed to create event-activation-on.");
|
||||
*enable_events = 1;
|
||||
}
|
||||
|
||||
/*
|
||||
* lvm.conf service_to_event, and vgchange -aay --eventactivation service,
|
||||
* then only activate LVs if the VG is complete.
|
||||
* A later event will complete the VG and activate it.
|
||||
*/
|
||||
if (event_activation && service_to_event && ea_service)
|
||||
vp->vg_complete_to_activate = 1;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int vgchange(struct cmd_context *cmd, int argc, char **argv)
|
||||
{
|
||||
struct vgchange_params vp = { 0 };
|
||||
struct processing_handle *handle;
|
||||
uint32_t flags = 0;
|
||||
int ret;
|
||||
@ -845,6 +997,24 @@ int vgchange(struct cmd_context *cmd, int argc, char **argv)
|
||||
cmd->lockd_vg_enforce_sh = 1;
|
||||
}
|
||||
|
||||
if (arg_is_set(cmd, eventactivation_ARG)) {
|
||||
int skip_command = 0, enable_events = 0;
|
||||
if (!_check_event_activation(cmd, &vp, &skip_command, &enable_events))
|
||||
return ECMD_FAILED;
|
||||
if (skip_command)
|
||||
return ECMD_PROCESSED;
|
||||
if (enable_events) {
|
||||
if (!event_activation_enable(cmd))
|
||||
log_warn("WARNING: Failed to create event-activation-on.");
|
||||
/* The process_each_vg lock_global/lvmcache_label_scan will be skipped. */
|
||||
if (!lock_global(cmd, "sh"))
|
||||
return ECMD_FAILED;
|
||||
lvmcache_label_scan(cmd);
|
||||
_online_pvid_file_create_all(cmd);
|
||||
flags |= PROCESS_SKIP_SCAN;
|
||||
}
|
||||
}
|
||||
|
||||
if (update)
|
||||
flags |= READ_FOR_UPDATE;
|
||||
else if (arg_is_set(cmd, activate_ARG))
|
||||
@ -855,6 +1025,8 @@ int vgchange(struct cmd_context *cmd, int argc, char **argv)
|
||||
return ECMD_FAILED;
|
||||
}
|
||||
|
||||
handle->custom_handle = &vp;
|
||||
|
||||
ret = process_each_vg(cmd, argc, argv, NULL, NULL, flags, 0, handle, &_vgchange_single);
|
||||
|
||||
destroy_processing_handle(cmd, handle);
|
||||
|
||||
@ -121,6 +121,6 @@ LABEL="direct_pvscan"
|
||||
# MD | | X | X* | |
|
||||
# loop | | X | X* | |
|
||||
# other | X | | X | | X
|
||||
RUN+="(LVM_EXEC)/lvm pvscan --background --cache --activate ay --major $major --minor $minor", ENV{LVM_SCANNED}="1"
|
||||
RUN+="(LVM_EXEC)/lvm pvscan --cache -aay --eventactivation event --major $major --minor $minor", ENV{LVM_SCANNED}="1"
|
||||
|
||||
LABEL="lvm_end"
|
||||
|
||||
@ -78,9 +78,19 @@ ENV{SYSTEMD_READY}="1"
|
||||
#
|
||||
# TODO: adjust the output of vgchange -aay so that
|
||||
# it's better suited to appearing in the journal.
|
||||
#
|
||||
# "--eventactivation event" used with pvscan or vgchange
|
||||
# tells the command that it is being run from an event.
|
||||
# The command does nothing if lvm.conf event_activation=0.
|
||||
# The command does nothing if lvm.conf event_activation=1,
|
||||
# and lvm.conf event_activation_options="service_only".
|
||||
# The command goes ahead if event_activation_options="event_only",
|
||||
# or if event_activation_options="service_to_event" and the
|
||||
# event-activation-on file exists.
|
||||
#
|
||||
|
||||
IMPORT{program}="(LVM_EXEC)/lvm pvscan --cache --listvg --checkcomplete --vgonline --udevoutput --journal=output $env{DEVNAME}"
|
||||
ENV{LVM_VG_NAME_COMPLETE}=="?*", RUN+="/usr/bin/systemd-run -r --no-block --property DefaultDependencies=no --unit lvm-activate-$env{LVM_VG_NAME_COMPLETE} lvm vgchange -aay --nohints $env{LVM_VG_NAME_COMPLETE}"
|
||||
IMPORT{program}="(LVM_EXEC)/lvm pvscan --cache --listvg --checkcomplete --vgonline --eventactivation event --udevoutput --journal=output $env{DEVNAME}"
|
||||
ENV{LVM_VG_NAME_COMPLETE}=="?*", RUN+="/usr/bin/systemd-run -r --no-block --property DefaultDependencies=no --unit lvm-activate-$env{LVM_VG_NAME_COMPLETE} lvm vgchange -aay --nohints --eventactivation event $env{LVM_VG_NAME_COMPLETE}"
|
||||
GOTO="lvm_end"
|
||||
|
||||
LABEL="lvm_end"
|
||||
|
||||
Loading…
Reference in New Issue
Block a user