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md0: bitmap file is out of date (8 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md0: bitmap file is out of date, doing full recovery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.
On Sat, Aug 30, 2008 at 5:44 AM, Per Jessen
Andrew Joakimsen wrote:
How do I recover a broken MD RAID-1.... Since there is no way to make a backup with easy restore? I boot the system and it says:
Boot up a rescue system, and tell us what "cat /proc/mdstat" says.
A broken RAID1 usually means one broken disk, and that the array is running degraded. It is typically fixed by hot-removing the failed drive, then hot-adding a new one.
/Per Jessen, Zürich
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