[Bug 2073751] [NEW] 50mounted-tests prevents os-prober to work with ThinLVM

[Guillaume]

Public bug reported:

No os-prober entries are added to grub.cfg for alternates systems on
ThinLVM, because of an issue with /usr/lib/linux-boot-probes/50mounted-
tests.

Updating line 55 from :
    type="$(grub-probe -d "$partition" -t fs)"
to
    type="$(grub-probe -d "$partition" -t fs || echo bad)"
fixes the issue.

Credit is due to mikeaa on bug #1987679.

Tested on Ubuntu 24.04.

** Affects: os-prober (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2073751

Title:
  50mounted-tests prevents os-prober to work with ThinLVM

Status in os-prober package in Ubuntu:
  New

Bug description:
  No os-prober entries are added to grub.cfg for alternates systems on
  ThinLVM, because of an issue with /usr/lib/linux-boot-
  probes/50mounted-tests.

  Updating line 55 from :
      type="$(grub-probe -d "$partition" -t fs)"
  to
      type="$(grub-probe -d "$partition" -t fs || echo bad)"
  fixes the issue.

  Credit is due to mikeaa on bug #1987679.

  Tested on Ubuntu 24.04.

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