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f3c1ce4d35
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.
19 lines
531 B
SYSTEMD
19 lines
531 B
SYSTEMD
[Unit]
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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 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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[Service]
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Type=oneshot
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Environment=LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES=1
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ExecStart=@SBINDIR@/lvm vgchange --monitor y
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ExecStop=@SBINDIR@/lvm vgchange --monitor n
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RemainAfterExit=yes
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[Install]
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WantedBy=sysinit.target
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