*** This bug is a duplicate of bug 1781364 ***
https://bugs.launchpad.net/bugs/1781364
** This bug has been marked a duplicate of bug 1781364
Kernel error "task zfs:pid blocked for more than 120 seconds"
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** Changed in: linux
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1773392
Title:
zfs hangs on mount/unmount
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** Changed in: linux
Status: Unknown => New
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Title:
zfs hangs on mount/unmount
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** Bug watch added: Github Issue Tracker for ZFS #7659
https://github.com/zfsonlinux/zfs/issues/7659
** Changed in: linux
Status: Fix Released => Unknown
** Changed in: linux
Remote watch: Github Issue Tracker for ZFS #7691 => Github Issue Tracker for
ZFS #7659
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** Changed in: linux
Status: Unknown => Fix Released
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Title:
zfs hangs on mount/unmount
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Upstream bug report and pull request to try:
"Kernel error "task zfs:pid blocked for more than 120 seconds" #7691"
https://github.com/zfsonlinux/zfs/issues/7691
"Fix zpl_mount() deadlock #7693"
https://github.com/zfsonlinux/zfs/pull/7693
** Bug watch added: Github Issue Tracker for ZFS #7691
It's an issue for my server too. LXD hangs when I try to restart
containers at times. I'm switching to libvirt until this is resolved.
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Title:
vmlinuz-4.15.0-23-generic - it seems ok!
I have upgraded normally and everything is fine, the machine boots up.
It's all done for me.
Thanks!
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4.15.0-23-generic - same bug: zfs still hangs.
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Title:
zfs hangs on mount/unmount
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And another little update:
I started to downgrade kernels on my serves (ubuntu 18.04 lxd hw nodes) and
also I had a problem: HP blade gen8 hangs on reboot/shutdown (system indicates
blade failure and you need to pull it off and insert again), while gen7 works
fine.
With 4.13 kernel gen8 works
And another little update to previous experiment:
Everything works fine with kernel 4.13.0-36 and zfs 0.7.5 IF you create new
zpool with disabled unsupported features:
feature@multi_vdev_crash_dump
feature@large_dnode
feature@sha512
feature@skein
feature@edonr
feature@userobj_accounting
Problem
Another experiment:
1) Setting new ubuntu 18.04 server with LXD on ZFS - zfs hangs on ct restart
2) Install 4.13.0-36 (from 16.04 HWE install disk) kernel + zfs 0.6.5 from
xenial repo (because 0.7.5 not compatible with old kernel)
3) Setup grub to load old kernel and reboot
4) And... everything
Little update here:
I tried ubuntu server 16.04 with HWE (4.13.0-36-generic) and lxd 3.0 + zfs
0.7.5 (latest from bionic repo) - and it seems there is no such bug with 4.13
kernel.
After that I updated kernel (from bionic repo again - 4.15.0-22-generic)
- and but appear again: zfs hangs if my
apport information
** Tags added: apport-collected
** Description changed:
I am running lxd 3.0 on ubuntu 18.04 with kernel 4.15.0-22-generic and
4.15.0-20-generic (same behaviour) with zfs backend (0.7.5-1ubuntu16;
also tried 0.7.9).
Sometimes lxd hangs when I try to stop / restart
Little notice also: after that hang is happend you can't shutdown or
reboot your server, you need to reset it or turn it off manually (or via
ipmi).
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