file system lockup with zfs hung task

Bug #1686604 reported by Jon AuYeung
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Expired
Undecided
Unassigned

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.

Tags: lxc zfs
Revision history for this message
Jon AuYeung (jon-auyeung) wrote :
Juhani Numminen (jsonic)
affects: kernel-package (Ubuntu) → linux (Ubuntu)
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Missing required logs.

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
Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status: Incomplete → Expired
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