[Bug 1479760] Re: iso-scan/filename= does not search btrfs partitions

[Ubuntu Foundations Team Bug Bot]

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** Tags added: patch

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https://bugs.launchpad.net/bugs/1479760

Title:
  iso-scan/filename= does not search btrfs partitions

Status in casper package in Ubuntu:
  New

Bug description:
  When booting an ISO image from GRUB, the scripts in initrd.lz probe
  partitions for the file given by the iso-scan/filename= kernel option.
  However a whitelist in the initrd file /scripts/lupin-helpers only
  considers partitions with filesystems of the types ext2, ext3, ext4,
  xfs, jfs, reiserfs, vfat, ntfs, and iso9660, and will therefore fail
  to mount an ISO located on a btrfs partition.  Adding btrfs to this
  list worked fine for me when testing with a 15.04 iso.  I'm guessing
  its exclusion is just an historic artifact.

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