[Bug 2067907] Re: systemd tools fail to mount disk images with btrfs filesystems

[Launchpad Bug Tracker]

This bug was fixed in the package systemd - 255.4-1ubuntu8.2

---------------
systemd (255.4-1ubuntu8.2) noble; urgency=medium

  * mountpoint-util: Deal with kernel API breakage in "norecovery" mount option.
    Also include fixup commit
    055b465a3f ("shared/mountpoint-util: for old kernels, assume "norecovery" is supported by btrfs").
    (LP: #2067907)
  * cgroup-util: allow cg_read_pid() to skip unmapped (zero) pids (LP: #2067922)
  * debian/extra: ship nice.conf for journald, not logind (LP: #2067927)

 -- Nick Rosbrook <enr0n at ubuntu.com>  Fri, 14 Jun 2024 17:03:19 -0400

** Changed in: systemd (Ubuntu Noble)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2067907

Title:
  systemd tools fail to mount disk images with btrfs filesystems

Status in systemd package in Ubuntu:
  Fix Committed
Status in systemd source package in Noble:
  Fix Released

Bug description:
  SRU Justification

  [Impact]

  In Ubuntu Noble, systemd-repart fail to mount images with btrfs
  filesystems in them. This is because the kernel removed the
  "norecovery" mount option which systemd-repart adds in when mounting
  filesystems from disk images.

  Commit which removed "norecovery" in the kernel:
  https://github.com/torvalds/linux/commit/a1912f712188291f9d7d434fba155461f1ebef66.

  [Fix]

  The issue was worked around upstream in systemd in
  https://github.com/systemd/systemd/pull/32892 and
  https://github.com/systemd/systemd/pull/32948.

  [Test]

  To reproduce:

  git clone https://github.com/systemd/mkosi
  cd mkosi
  bin/mkosi -d fedora -t disk --tools-tree=default -f
  sudo systemd-repart --image mkosi.output/image.raw
  The last command will fail with "Failed to mount image: Invalid argument". After backporting the two systemd commits, the last command will succeed.

  [Regression Potential]

  Low, the systemd commits only change behavior for btrfs filesystems,
  which are currently not working at all. The commits have been
  backported to the systemd stable releases and we've had no reports of
  any issues caused by backporting these commits.

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