[Bug 645608] Re: Support mdadm metadata version 0.91 (used during reshape)

[Patrik Dufresne]

I still have this bug in Ubuntu hardy 10.04.2 LTS (server or desktop).

It would be nice just to change the error message to be more specific
about the problem being mdadm reshaping the RAID.

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Title:
  Support mdadm metadata version 0.91 (used during reshape)

Status in “grub2” package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: grub2

  I've got a following setup

  Quad code intel
  8gb memory
  6 x 1TB sata disk, in a raid5 array

  I've installed maveric i386 on a 4x 1TB array. It boots just fine.
  I've added the two other disks, and i'm currently reshaping the array to include the two extra disks. (i mention this because maybe it's relevant, some locking that prevents update-grub from accessing the disks?)

  I've run dist upgrade this morning, no problems, but i noticed just
  now that only 3GB memory was available. So i installed the pae kernel
  to fix this. Also tried to install the server kernel

  Suddenly, i get a lot of errors from grub-update. During apt-get and
  by hand.

  root at tenedos:~# update-grub
  Generating grub.cfg ...
  error: unsupported RAID version: 0.91.
  error: unsupported RAID version: 0.91.
  error: unsupported RAID version: 0.91.
  error: unsupported RAID version: 0.91.
  error: unsupported RAID version: 0.91.
  error: unsupported RAID version: 0.91.
  /usr/sbin/grub-probe: error: no such disk.

  An update was available for grub-pc so i installed that one as well, no improvement.
  No real info to be found on google.

  I'm afraid to reboot, since i don't think it will boot anymore.

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