Re: [opensuse] Recover md RAID-1.

From: Per Jessen <per@xxxxxxxxxxxx>
Date: Sun, 31 Aug 2008 11:02:49 +0200

Andrew Joakimsen wrote:

I can't get the array to rebuild

# mdadm -s /dev/md0
md0 stopped
unbind < sda2 >
export_rdev(sda2)
unbind < sdb1 >
export_rdev(sdb1)
stopped /dev/md0

# mdadm -A /dev/md0 /dev/sda2 /dev/sdb1
RAID array is not clean -- starting background reconstruction
RAID 1: RAID set md0 active with 2 out of 2 mirrors
md0: bitmap file is out of date (8 < 9) -- forcing full recovery
md0: bitmap file is out of date, doing full recovery
md0: bitmap initialisation failed: -5
md0: failed to create bitmap (-5)
md: perf->run() failed ...
mdadm: failed to RUN_ARRAY /dev/md0: input/output error

I can force mount /dev/sda2 or /dev /sdb1 to mount as ext3 and I can
read the data just fine.

If the data is fine, I would assemble the array in degraded mode using
just one of the two drives, then hot-add the 2nd one later.

/Per Jessen, Zürich

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References:
- [opensuse] Recover md RAID-1.
  - From: Andrew Joakimsen
- Re: [opensuse] Recover md RAID-1.
  - From: Per Jessen
- Re: [opensuse] Recover md RAID-1.
  - From: Andrew Joakimsen

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