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# 
# Date: Wed, 21 Nov 2001 11:28:46 +1100 (EST)
# From: Neil Brown <neilb@cse.unsw.edu.au>
# To: "Bjarni R. Einarsson" <bre@klaki.net>
# Cc: linux-raid@vger.kernel.org
# Subject: Re: Ugly RAID5 crash - help?
#
.....
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Get and compile
   http://www.cse.unsw.edu.au/~neilb/source/mdctl/mdctl-0.5.tgz 
and run
  mdctl --assemble --force /dev/md2 /dev/hda6 /dev/hde6 /dev/hdg6

Without the --force, it will notice the event counter problems and
fail.
With the --force, it will correct the event counter of hdg6 to 64, and
then assemble the array with just one missing drive.
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# ----------------------
#
mdctl --examine
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Remake your RAID-1:
 
   mdctl --stop /dev/md1
   mdctl --create /dev/md1 --level=1 -n 2 /dev/sda1 /dev/sdb1
   lilo

#
#
# Testing mirroring
# -----------------
#
- Stop writing to it for now
- Simulate a failed disk
	mdctl --fail /dev/md0 /dev/sdb1

- Remove the failed disk
	mdctl --remove /dev/md0 /dev/sdb1

- Add a new disk
	mdctl --add /dev/md0 /dev/sdb1

- cat /proc/mdstat
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# end of file