[Bug 1530457] [NEW] grub2: cherry-pick support for ZFS pool feature flags, bugfixes

[Hajo Möller]

Public bug reported:

Now that native ZFS becomes available in Ubuntu we should cherry-pick
patches from grub2 upstream, which add support for booting off zpools
with all (current) feature flags enabled/active and fix some issues and
memory leaks.

I'll quote my posting to bugs.debian.org:

Dear Maintainers,

as of May 2015 grub2 upstream includes patches by Toomas Soome to
support OpenZFS pools with feature flags, which fixes booting off ZFS
rpools. The relevant upstream logs:
http://git.savannah.gnu.org/cgit/grub.git/log/include/grub/zfs
http://git.savannah.gnu.org/cgit/grub.git/log/grub-core/fs/zfs

As I do not know whether Toomas' patches depend on intermediate commits
I propose to cherry-pick all new commits to "include/grub/zfs" and
"grub-core/fs/zfs". Even if the patches do not depend on previous
commits it would be nice to include them as fixes to memory leaks and
other issues.

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: grub2 (Debian)
     Importance: Unknown
         Status: Unknown

** Bug watch added: Debian Bug tracker #706415
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=706415

** Also affects: grub2 (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=706415
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/1530457

Title:
  grub2: cherry-pick support for ZFS pool feature flags, bugfixes

Status in grub2 package in Ubuntu:
  New
Status in grub2 package in Debian:
  Unknown

Bug description:
  Now that native ZFS becomes available in Ubuntu we should cherry-pick
  patches from grub2 upstream, which add support for booting off zpools
  with all (current) feature flags enabled/active and fix some issues and
  memory leaks.

  I'll quote my posting to bugs.debian.org:

  Dear Maintainers,

  as of May 2015 grub2 upstream includes patches by Toomas Soome to
  support OpenZFS pools with feature flags, which fixes booting off ZFS
  rpools. The relevant upstream logs:
  http://git.savannah.gnu.org/cgit/grub.git/log/include/grub/zfs
  http://git.savannah.gnu.org/cgit/grub.git/log/grub-core/fs/zfs

  As I do not know whether Toomas' patches depend on intermediate commits
  I propose to cherry-pick all new commits to "include/grub/zfs" and
  "grub-core/fs/zfs". Even if the patches do not depend on previous
  commits it would be nice to include them as fixes to memory leaks and
  other issues.

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