[mythtv-users] semiOT: minor emergency, raid array's contents deleted
drescherjm at gmail.com
Mon Dec 7 17:03:27 UTC 2009
On Mon, Dec 7, 2009 at 11:56 AM, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> so here's a weird one...
> was watching some tv then shutdown my frontend, ssh'd into the backend
> and noticed that both my raid arrays are now "empty". the filesystems,
> which are JFS, check out as fine, but both, on seperate computers, are
> now both completely blank. absolutely no idea how this happened, but
> I'm hoping someone here has an idea as to what may have happened and
> if there is a way to recover all my lost data?
With linux software raid recovery is usually possible. I have not seen
a case where I could not recover and I run dozens of arrays at work.
Your description of the problem is very unclear.
can you post the output of
Should look something like this:
# cat /proc/mdstat
Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : active raid5 sx8/1 sx8/4 sx8/3 sx8/5 sx8/2
976793600 blocks level 5, 256k chunk, algorithm 2 [5/5] [UUUUU]
md1 : active raid6 sx8/6 sx8/15 sx8/14 sx8/12 sx8/11
sx8/10 sx8/9 sx8/8 sx8/7
1953587200 blocks level 6, 512k chunk, algorithm 2 [10/9] [UUUUUUU_UU]
unused devices: <none>
well without the bad drive. I am working on that at the minute. I have
to either wait till everyone goes home or reboot the server to remove
the 5 drives from md0 so that I can replace them with 6x1TB drives and
use one of the old 250GB SATA1 disks in md1..
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