Public bug reported:
After installing xenial using the daily ubuntu-server installer,
creating an LVM volume for the root filesystem, I lvconverted it into a
raid1 mirror for redundancy over the pair of SSDs installed (as separate
LVM PVs):
sudo lvconvert -m 1 --type raid1 bonk/bonk1 /dev/sdc1 /dev/sdd1
After a reboot, the lvm2-monitor.service fails. Relevant lines from
journalctl:
$ sudo journalctl | grep -iE '(lvm|dmeventd)'
Mar 12 19:32:48 bonk1 systemd[1]: Listening on LVM2 metadata daemon
socket.
Mar 12 19:32:48 bonk1 systemd[1]: Listening on LVM2 poll daemon socket.
Mar 12 19:32:48 bonk1 systemd[1]: Starting Monitoring of LVM2 mirrors,
snapshots etc. using dmeventd or progress polling...
Mar 12 19:32:49 bonk1 systemd[1]: Started LVM2 metadata daemon.
Mar 12 19:32:52 bonk1 dmeventd[1039]: dmeventd
libdevmapper-event-lvm2raid.so dlopen failed: libdevmapper-event-lvm2raid.so:
cannot open shared object file: No such file or directory.
Mar 12 19:32:52 bonk1 dmeventd[1039]: dmeventd
libdevmapper-event-lvm2raid.so dlopen failed: libdevmapper-event-lvm2raid.so:
cannot open shared object file: No such file or directory.
Mar 12 19:32:52 bonk1 dmeventd[1039]: dmeventd
libdevmapper-event-lvm2raid.so dlopen failed: libdevmapper-event-lvm2raid.so:
cannot open shared object file: No such file or directory.
Mar 12 19:32:59 bonk1 lvm[556]: Monitoring bonk/bonk1 failed.
Mar 12 19:32:59 bonk1 lvm[556]: 4 logical volume(s) in volume group
"bonk" monitored
Mar 12 19:32:59 bonk1 systemd[1]: lvm2-monitor.service: Main process
exited, code=exited, status=5/NOTINSTALLED
Mar 12 19:32:59 bonk1 systemd[1]: Failed to start Monitoring of LVM2
mirrors, snapshots etc. using dmeventd or progress polling.
Mar 12 19:32:59 bonk1 systemd[1]: lvm2-monitor.service: Unit entered
failed state.
Mar 12 19:32:59 bonk1 systemd[1]: lvm2-monitor.service: Failed with
result 'exit-code'.
Mar 12 19:33:00 bonk1 dmeventd[1039]: dmeventd
libdevmapper-event-lvm2raid.so dlopen failed: libdevmapper-event-lvm2raid.so:
cannot open shared object file: No
such file or directory.
Mar 12 19:33:08 bonk1 systemd-udevd[662]: Process 'watershed sh -c
'/sbin/lvm vgscan; /sbin/lvm vgchange -a y'' failed with exit code 5.
Mar 12 19:33:08 bonk1 dmeventd[1039]: dmeventd
libdevmapper-event-lvm2raid.so dlopen failed: libdevmapper-event-lvm2raid.so:
cannot open shared object file: No such file or directory.
Mar 12 19:33:16 bonk1 systemd-udevd[655]: Process 'watershed sh -c
'/sbin/lvm vgscan; /sbin/lvm vgchange -a y'' failed with exit code 5.
The .so file is present and installed as part of dmeventd:
$ dpkg -S libdevmapper-event-lvm2raid.so
dmeventd:
/lib/x86_64-linux-gnu/device-mapper/libdevmapper-event-lvm2raid.so
This may be related to Debian's lvm2 2.02.133-2 change:
* Drop event plugin directory move. This moves the plugins back into
the main library path. (closes: #807279)
See:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=807279
---
$ apt-cache policy lvm2 dmeventd
lvm2:
Installed: 2.02.133-1ubuntu7
Candidate: 2.02.133-1ubuntu7
Version table:
*** 2.02.133-1ubuntu7 500
500 http://fi.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
100 /var/lib/dpkg/status
dmeventd:
Installed: 2:1.02.110-1ubuntu7
Candidate: 2:1.02.110-1ubuntu7
Version table:
*** 2:1.02.110-1ubuntu7 500
500 http://fi.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
100 /var/lib/dpkg/status
** Affects: lvm2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1556451
Title:
xenial lvm2-monitor.service fails with lvm raid1 volumes
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