You have been subscribed to a public bug:
The 'Unmounting local filesystems...' stage of shutdown fails, and reports that
the /var partition is busy.
This occurs where /var is on its own separate partition.
I am using 64 bit Kubuntu 12.10 (quantal) but I was also able to reproduce this
problem on a clean install of
xubuntu 12.10 i386 in virtualbox.
I added debugging messages to the script: /etc/init.d/umountfs
'fuser -m /var' shows that the only process with a file open on /var is
dhclient, which has a dhcp lease file in /var/lib/dhcp/
Using 'fuser -k -m /var' in the umountfs script kills the offending process,
allowing for a clean shutdown,
but that's not the right fix.
I'm not sure how to proceed from here.
dhclient is a child process of NetworkManager - should NetworkManager clean it
up?
the /etc/init.d/sendsigs script, which kills other processes during shutdown,
is specifically blocked from killing dhclient
by an entry in /run/sendsigs.omit.d/ so it is not clear to me what should be
happening.
Apologies if I filed this in the wrong place.
Description: Ubuntu 12.10
Release: 12.10
upstart:
Installed: 1.5-0ubuntu9
Candidate: 1.5-0ubuntu9
Version table:
*** 1.5-0ubuntu9 0
500 http://jp.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
100 /var/lib/dpkg/status
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
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umount of /var partition fails during shutdown, due to lingering dhclient
https://bugs.launchpad.net/bugs/1089771
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