[Bug 1992531] Re: crash on dir removal when previous apt overlay umount failed

[Dan Bungert]

We believe this issue has been resolved in Subiquity 23.04.2.

If you had tested this with a pre-final version of Ubuntu 23.04, it's
recommended to download the final install media.

For testing with Ubuntu Server 22.04.x or 20.04.x, when running
Subiquity, you should offered a new version of the installer.  Please
take that update to version 23.04.2 or later to get the fix.

If this is still a problem for you, please make a comment and set the state
back to New.  Thank you for the bug report.

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https://bugs.launchpad.net/bugs/1992531

Title:
  crash on dir removal when previous apt overlay umount failed

Status in subiquity:
  Fix Released

Bug description:
  If the apt overlay fails to umount, which is a non-fatal error,
  Subiquity will also fail to remove the directory the overlay is
  mounted at, which is a fatal error.

  unmount failure logged at LP: #1992533

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