Hi Alexandre, there's no need to file a different bug, I just tagged
this one as affecting "linux (Ubuntu)" as well (the launchpad "linux"
project is actually the kernel.

You just need to run the command mentioned in comment #12 to provide the
extra information needed.

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https://bugs.launchpad.net/bugs/1979633

Title:
  The "bare" snap is the cause of error messages "unable to read
  partition table" and "partition table beyond EOD, truncated"

Status in linux package in Ubuntu:
  Incomplete
Status in snapd package in Ubuntu:
  Invalid

Bug description:
  Hi,

  here is the problem:

  # journalctl | grep loop4
  Jun 23 09:49:45 vougeot kernel: loop4: detected capacity change from 0 to 8
  Jun 23 09:49:45 vougeot kernel: Dev loop4: unable to read RDB block 8
  Jun 23 09:49:45 vougeot kernel:  loop4: unable to read partition table
  Jun 23 09:49:45 vougeot kernel: loop4: partition table beyond EOD, truncated

  The loop4 device is used to mount the "bare" snap:

  $ df -a | grep /snap/bare/
  [...]
  /dev/loop4                                  128       128         0 100% 
/snap/bare/5

  Note that on another system, the loop device will probably have
  another number.  The error messages can be found with the following
  commands:

  # journalctl | grep "unable to read RDB block"
  Jun 23 09:49:45 vougeot kernel: Dev loop4: unable to read RDB block 8

  # journalctl | grep "unable to read partition table"
  Jun 23 09:49:45 vougeot kernel:  loop4: unable to read partition table

  # journalctl | grep "partition table beyond EOD"
  Jun 23 09:49:45 vougeot kernel: loop4: partition table beyond EOD, truncated

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: snapd 2.55.5+22.04
  Uname: Linux 5.18.6-051806-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82.1
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: KDE
  Date: Thu Jun 23 11:39:16 2022
  Snap.Changes: no changes found
  SourcePackage: snapd
  UpgradeStatus: No upgrade log present (probably fresh install)

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