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[Bug 2032166] Re: shiftfs-lxd.sh test in ubuntu_overlayfs_smoke_test fail with realtime kernel due to the lack of zfs support

To: canonical-ubuntu-qa@xxxxxxxxxxxxxxxxxxx
From: Po-Hsu Lin <2032166@xxxxxxxxxxxxxxxxxx>
Date: Tue, 02 Jan 2024 09:34:45 -0000
Reply-to: Bug 2032166 <2032166@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx

** Merge proposal linked:
   https://code.launchpad.net/~canonical-kernel-team/+git/overlay-shiftfs-tests/+merge/457815

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https://bugs.launchpad.net/bugs/2032166

Title:
  shiftfs-lxd.sh test in ubuntu_overlayfs_smoke_test fail with realtime
  kernel due to the lack of zfs support

Status in ubuntu-kernel-tests:
  In Progress

Bug description:
  The shiftfs-lxd.sh test is failing with:
   Running 'sudo -iu ubuntu /home/ubuntu/autotest/client/tmp/ubuntu_overlayfs_smoke_test/src/overlay-shiftfs-tests/tests/shiftfs-lxd.sh'
   Error: Error loading "zfs" module: Failed to run: modprobe -b zfs: exit status 1 (modprobe: FATAL: Module zfs not found in directory /lib/modules/5.15.0-1044-realtime)
   Creating c1
   Error: Failed loading storage pool "zfs": Storage pool not found
   Error: Instance not found
   FAIL
   Error: Instance not found
   Error: Failed checking instance exists "local:c1": Instance not found
   Error: Storage pool not found

  This is because ZFS is not supported in realtime kernel [1].

  We should disable this specific test for realtime kernels.

  [1] https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/2017637

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