Hi everyone,
One of my boxes crashed (with a hardware error, I think - CPU and
motherboard replacements are on their way). I booted it up on a
rescue disk (Fedora 8) to let the software raid sync up.
When it was running I noticed that one of the disks were listed as
"dm-5" and ... uh-oh ... there was a disk missing. I figured out
that the multipath stuff for some reason had setup two of the disks
as /dev/mapper/mpath0 and now md was syncing to this device.
Much later I figured out that "dmraid -b" reported two of the disks as
being the same:
/dev/sda: 976541696 total, "W553841781E0A2001842"
/dev/sdb: 976773168 total, "V600VXZG000000000000"
/dev/sdc: 586114704 total, "U1757241000000000000"
/dev/sdd: 976773168 total, "U1907712000000000000"
/dev/sde: 976773168 total, "U2133609000000000000"
/dev/sdf: 976773168 total, "D2994402000000000000"
/dev/sdg: 625140335 total, "U2130349000000000000"
/dev/sdh: 976773168 total, "U1541228000000000000"
/dev/sdi: 976771055 total, "W5267124000000000000"
/dev/sdj: 976773168 total, "U1409513000000000000"
/dev/sdk: 976773168 total, "U1409513000000000000"
Any idea how this could happen? All 11 disks are on a 3ware 9650
controller (the first one is a "single" 3ware device, the rest are
JBOD). I tried rebooting and booting on a Fedora 7 DVD with the same
result.
[ all this of course seems to have messed up my raid10 badly -- more
on that tomorrow ]
- ask
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