Public bug reported:
Ubuntu 11.04, kernel 3.0.0-7-server (pinned from oneiric).
The machine runs about 50 LXC containers (1300 processes at the moment).
Twice during last month I observed an process (first time it was apache
and then cron) in a container to get stuck in unkillable (D) state. This
is accompanied with "TASKNAME:TASKPID blocked for more than 120 seconds"
message in dmesg (of the host machine). If I try stop the container, I
can not start it anymore, as the cgroup is not completely and cleanly
destroyed.
Unfortunately I don't have a way to reproduce the bug.
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/838061
Title:
lxc causes process to get stuck in unkillable state
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