[Bug 1833025] Re: bcache partition within fstab prevents from booting

[Dan Streetman]

The commits that cause this aren't in Bionic, and the commits that fix
this are already in Eoan; so the fix is only needed in Disco.

** Bug watch added: github.com/systemd/systemd/issues #11368
   https://github.com/systemd/systemd/issues/11368

** Also affects: systemd via
   https://github.com/systemd/systemd/issues/11368
   Importance: Unknown
       Status: Unknown

** Also affects: systemd (Ubuntu Disco)
   Importance: Undecided
       Status: New

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

** Changed in: systemd (Ubuntu Disco)
     Assignee: (unassigned) => Dan Streetman (ddstreet)

** Changed in: systemd (Ubuntu Disco)
   Importance: Undecided => High

** Changed in: systemd (Ubuntu Disco)
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/1833025

Title:
  bcache partition within fstab prevents from booting

Status in systemd:
  Unknown
Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Disco:
  In Progress

Bug description:
  Almost every boot attempt drops to initramfs prompt, requiring me to
  type echo /dev/sdb >/sys/fs/bcache/register. Logs showing that attempt
  to register caching device via udev rules was made, but failed with
  code == 1.

  Looks like an regression were introduced in upstream (systemd 240)
  which breaks the order of udev commands.

  Here is an upstream bug https://github.com/systemd/systemd/issues/11368
  And here is a patch for this issue https://github.com/systemd/systemd/pull/11891
  Can you, please merge this patch to disco branch?

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