This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1686604
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1686604
Title:
file system lockup with zfs hung task
Status in linux package in Ubuntu:
Incomplete
Bug description:
I am running an Ubuntu 16.04 server running on an HP Proliant chassis
with several lxc containers running on zfs. While performing a series
of debian updates on the host and container, as well as container
destruction/creation, the kernel spits out a stack trace indicating
that the there was a hung task while it was performing writeback in
zfs.
If I attempt to perform a "sync" command on the host, the command will
not return. Also, if I attempt to reboot the server with the reboot
command, the server never reboots. A power cycle is required.
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