[Bug 1721633] Re: os-prober needs a check for subvolumes on btrfs formatted root partitions

[Phillip Susi]

*** This bug is a duplicate of bug 887836 ***
    https://bugs.launchpad.net/bugs/887836

** This bug has been marked a duplicate of bug 887836
   update-grub does not create btrfs menuentry in grub.cfg

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https://bugs.launchpad.net/bugs/1721633

Title:
  os-prober needs a check for subvolumes on btrfs formatted root
  partitions

Status in grub2 package in Ubuntu:
  New

Bug description:
  os-prober will not find other ubuntu installs when their root
  partitons are Btrfs and created by ubiquity.  Ubuntu creates
  subvolumes with the @ for root and @home.  os-prober needs to check
  inside the @ subvolume or there needs to be a symlink to @/boot @/etc
  which is hackish/not sane otherwise the other already installed ubuntu
  versions get overwritten or not seen in the grub menu.

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