[Bug 1424123] Re: Need to update for XFS crc=1 (non-default) on-disk format change

[Peter Cordes]

** Description changed:

  Filing a note here in case I forget later.
  
- It looks like GRUB in 14.10 doesn't support XFS's new on-disk metadata
- format that has CRCs.  (rationale:
+ It looks like GRUB (2.02-beta2-15) in 14.10 doesn't support XFS's new
+ on-disk metadata format that has CRCs.  (rationale:
  https://www.kernel.org/doc/Documentation/filesystems/xfs-self-
  describing-metadata.txt)
+ 
+ mkfs.xfs -m crc=1,finobt=1 /dev/sdXY   creates an XFS with the new on-
+ disk format.  This is NOT the default, and probably won't be until
+ kernel support for it has been in distros for a while.
+ 
  
  redhat bug with some patches from Dec 2014:
  https://bugzilla.redhat.com/show_bug.cgi?id=1001279
  
  I haven't yet dug up any changelogs about those patches getting merged
  into GRUB's upstream git repo.
  
  If there's a PPA, or an easy way to build a .deb from git master (or
  some other way I can easily test git master on an Ubuntu system), I'd be
  interested and willing to test this.
+ 
+ 
+ (It's possible I'm mistaken here, and my boot problem was from using RAID10,f2, rather than from XFS with crc=1.  testing now.)

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https://bugs.launchpad.net/bugs/1424123

Title:
  Need to update for XFS crc=1 (non-default) on-disk format change

Status in grub2 package in Ubuntu:
  New

Bug description:
  Filing a note here in case I forget later.

  It looks like GRUB (2.02-beta2-15) in 14.10 doesn't support XFS's new
  on-disk metadata format that has CRCs.  (rationale:
  https://www.kernel.org/doc/Documentation/filesystems/xfs-self-
  describing-metadata.txt)

  mkfs.xfs -m crc=1,finobt=1 /dev/sdXY   creates an XFS with the new on-
  disk format.  This is NOT the default, and probably won't be until
  kernel support for it has been in distros for a while.

  
  redhat bug with some patches from Dec 2014:
  https://bugzilla.redhat.com/show_bug.cgi?id=1001279

  I haven't yet dug up any changelogs about those patches getting merged
  into GRUB's upstream git repo.

  If there's a PPA, or an easy way to build a .deb from git master (or
  some other way I can easily test git master on an Ubuntu system), I'd
  be interested and willing to test this.

  
  (It's possible I'm mistaken here, and my boot problem was from using RAID10,f2, rather than from XFS with crc=1.  testing now.)

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