4500 RAID failure
I have a 4500 with 2 expansion units. We had a power failure for 2 hours on Saturday. The system came up to the recovery console, and I chose to reboot. It rebooted, and could only be pinged -- no other access, then rebooted again, and came up. But once the system was up, it indicated RAID failure on md0 -- the 4 internal drives. The other drives were fine.
Looking at the drives from the web interface, the status is OK on all 4 drives. All 4 drives show the same type, 245G MAXTOR, but in the size column it shows 230.67GB for 2 of the drives, and 533.00 MB for the other 2 drives.
Logging on to the system via ssh, I see that hde and hdg are the drives in question (onlly showing hde):
md100: former device hde2 is unavailable, removing from array!
md101: former device hde5 is unavailable, removing from array!
hde1: bad access: block=2, count=2
end_request: I/O error, dev 21:01 (hde), sector 2
hde: unknown partition table
hde: unknown partition table
md: trying to remove hde2 from md100 ...
md: trying to hot-add hde2 to md100 ...
md: hde2 has zero size, marking faulty!
md: hde2 has zero size, marking faulty!
md: trying to remove hde5 from md101 ...
md: trying to hot-add hde5 to md101 ...
md: hde5 has zero size, marking faulty!
md: hde5 has zero size, marking faulty!
hde: unknown partition table
Running fdisk, I see that neither hde nor hdg have any partitioning info.
Running fdisk or sfdisk to partition the drives works -- it shows the same info (cyls, etc.) as hda & hdc, but then the partition map is wiped by something.
So it appears the drives are OK, and just need partitioned. I'm presuming they are the same partition map as hda hdc -- but don't know for sure.
Any ideas how to get these drives back in the RAID array?
Thanks. Mike
|