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systemd: various updates and fixes

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Don't use lvmetad in lvm2-monitor.service ExecStop to avoid a systemd issue.
 - a systemd design issue while processing dependencies
   with socket-based activation that ends up with a hang
 - https://bugzilla.redhat.com/show_bug.cgi?id=843587
   (also tracker bug https://bugzilla.redhat.com/show_bug.cgi?id=871527)
 - not using lvmetad in this case is just a workaround, once the bug
   above is resolved, we should enable the lvmetad in that specific case

Remove dependency on fedora-storage-init.service in lvm2 systemd units.
 - fedora-storage-init.service and fedora-storage-init-late.service is
   going to be separated into respective units that belong to each block
   device subsystem:
     - mpath + mdraid activated via udev solely
     - dmraid with its own dmraid-activation.service unit
     - lvm2 with the lvm2-activation-generator to generate the
       activation units runtime if lvmetad disabled
       (global/use_lvmetad=0 set in lvm.conf) and activation done
       via udev+lvmetad if lvmetad enabled (global/use_lvmetad=1 set
       in lvm.conf)

Depend on lvm2-lvmetad.socket in lvm2-monitor.service systemd unit.
 - as lvm2-monitor uses lvmetad if lvmetad is enabled
This commit is contained in:
Peter Rajnoha 2012-10-30 20:36:49 +01:00
parent 09d77d0c94
commit 360c569ce8
2 changed files with 7 additions and 3 deletions
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3
WHATS_NEW
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@ -1,5 +1,8 @@
Version 2.02.99 -
===================================
Don't use lvmetad in lvm2-monitor.service ExecStop to avoid a systemd issue.
Remove dependency on fedora-storage-init.service in lvm2 systemd units.
Depend on lvm2-lvmetad.socket in lvm2-monitor.service systemd unit.
Hardcode use_lvmetad=0 if cluster locking used and issue a warning msg.
Avoid reading mirrors with failed devices in its mirrored log.
Avoid reading from mirrors that have failed devices if they block I/O.

7
scripts/lvm2_monitoring_systemd_red_hat.service.in
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@ -1,8 +1,8 @@
[Unit]
Description=Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling
Documentation=man:dmeventd(8) man:lvcreate(8) man:lvchange(8) man:vgchange(8)
Requires=dm-event.socket
After=dm-event.socket fedora-storage-init.service fedora-storage-init-late.service lvm2-activation.service lvm2-lvmetad.service
Requires=dm-event.socket lvm2-lvmetad.socket
After=dm-event.socket lvm2-lvmetad.socket lvm2-lvmetad.service
Before=local-fs.target
DefaultDependencies=no
Conflicts=shutdown.target
@ -11,7 +11,8 @@ Conflicts=shutdown.target
Type=oneshot
Environment=LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES=1
ExecStart=@sbindir@/lvm vgchange --monitor y
ExecStop=@sbindir@/lvm vgchange --monitor n
# The lvmetad must be disabled here, it needs https://bugzilla.redhat.com/show_bug.cgi?id=843587 to be resolved first.
ExecStop="@sbindir@/lvm vgchange --monitor n --config 'global{use_lvmetad=0}'"
RemainAfterExit=yes
[Install]