[Bug 1887964] Re: VG unavailable after upgrade from 18.04 to 20.04 Cannot process volume group vg01 Volume group "vg01" not found

[Michel Bretschneider]

Update: I installed 5.4.0-73 via update, grub config got updated but
after reboot only

5.4.0-72 (the broken one)
4.15
4.4 (the uninstalled one)

appeared in the grub menu. After "reparing" the grub update (see:
https://askubuntu.com/a/1207143), the machine boots into 5.4.0-73
without major issues. There are still a bunch of warnings but at least
it starts.

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Title:
  VG unavailable after upgrade from 18.04 to 20.04 Cannot process volume
  group vg01 Volume group "vg01" not found

Status in lvm2 package in Ubuntu:
  Confirmed
Status in lvm2 source package in Focal:
  Confirmed

Bug description:
  After upgrading a laptop configured with LVM from 18.04 to 20.04 the volume group is no longer found.
  During boot the console shows

  Volume group "vg01" not found
  Cannot process volume group vg01
  Gave up waiting for suspend/resume device
  ALERT! /dev/mapper/vg01-root does not exist. Dropping to a shell!

  Attached dist-upgrade logs and console output.

  Tried the "vgck --updatemetadata vg01" recommended on this bug report:
  https://bugs.launchpad.net/ubuntu-z-systems/+bug/1874381

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