On Sun, 1 Jan 2006, berk walker wrote:
I don 't think that will help you, per se. Why do you say it is your last
chance? If you have n-1 disks OK, then you may be OK. If not, a spare will
not help. Can you tell us more?
b-
So there is a RAID5 array with 4 disks. I had a long power failure, and
during the boot sequence, I saw that the 4th disk got marked as non fresh.
I started the process that should bring the 4th disk back in the array,
but during this the 3th disk died. The 4th disk is now marked as spare.
Meanwhile a found the 4k superblock on the disk (strace mdadm -E), and I
got - from the source of mdadm - the exact location of the spare flag. But
I guess, I have to recalc the correct checksum of the new superblock.(?)
--
Czigola, Gabor
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