[Pkg-libvirt-maintainers] Bug#758759: postinst fails if virtlockd.service is masked

[Linus van Geuns]

Starting vlockd.service did allow the affected libvirt-packages to be updated:
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systemctl start virtlockd.service && aptitude safe-upgrade
The following partially installed packages will be configured:
  libvirt-bin libvirt-daemon-system
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
Setting up libvirt-daemon-system (1.2.7-10+b1) ...
Setting up libvirt-bin (1.2.7-10+b1) ...

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The original issue seems to apply to the current version of
libvirt-daemon-system:
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systemctl stop virtlockd.service && dpkg-reconfigure libvirt-daemon-system
Warning: Stopping virtlockd.service, but it can still be activated by:
  virtlockd.socket
Job for virtlockd.service failed. See 'systemctl status
virtlockd.service' and 'journalctl -xn' for details.

Aug 23 13:04:51 osmium systemd[1]: Stopping Virtual machine lock manager...
-- Subject: Unit virtlockd.service has begun shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit virtlockd.service has begun shutting down.
Aug 23 13:04:51 osmium systemd[1]: Stopped Virtual machine lock manager.
-- Subject: Unit virtlockd.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit virtlockd.service has finished shutting down.
Aug 23 13:04:52 osmium systemd[1]: Unit virtlockd.service cannot be
reloaded because it is inactive.
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Regards, Linus