On Thu Sep 17, 2009 at 09:19:58PM -0700, Tim Bostrom wrote:
> This seemed to work, though I'm still working through the permutations
> of the drive letters.
>
> I noticed that mdadm think that partition sde1 is ext2 filesystem on
> it. See below:
>
> [root@tera tbostrom]# mdadm -C /dev/md0 -l 5 -n 5 -c 256 /dev/sdb1
> /dev/sdd1 /dev/sdc1 /dev/sde1 missing
> mdadm: /dev/sdb1 appears to be part of a raid array:
> level=raid5 devices=5 ctime=Thu Sep 17 21:13:21 2009
> mdadm: /dev/sdd1 appears to be part of a raid array:
> level=raid5 devices=5 ctime=Thu Sep 17 21:13:21 2009
> mdadm: /dev/sdc1 appears to be part of a raid array:
> level=raid5 devices=5 ctime=Thu Sep 17 21:13:21 2009
> mdadm: /dev/sde1 appears to contain an ext2fs file system
> size=396408836K mtime=Mon Sep 21 03:41:16 2026
> mdadm: /dev/sde1 appears to be part of a raid array:
> level=raid5 devices=5 ctime=Thu Sep 17 21:13:21 2009
> Continue creating array?
>
> What gives? I tried popping sdf1 in there without creating the array
> - just to see what would happen and it thinks that sdf1 has ext2 as
> well.
>
That would suggest that sde1 is the first disk in the array (I think).
> Still at a loss here. I haven't worked through all the drive
> permutations. In the meantime, I'll try that. Does it make sense to
> try sdf1 in the permutation since the drive letters may have changed
> since moving from the enclosure? I thought I put them back in the
> same order as the enclosure.
>
Definitely not - we know sdf1 has been re-written when you did the
initial --create after moving the drives out of the enclosure. This
means it _definitely_ has invalid data on it.
Unfortunately, without having the metadata information from the
_original_ array _after_ it has been moved from the enclosure, there's
no way of knowing what order the drives should be in. I _think_ that
sde1 will be the first disk (as it shows up as an ext2 filesystem), but
you'll really have to try every possible combination of the 5 devices
(the 4 partitions and "missing"). You may be best scripting this (or
searching to see whether someone's already done that) - there's 120
possible combinations to try.
Cheers,
Robin
--
___
( ' } | Robin Hill <robin@xxxxxxxxxxxxxxx> |
/ / ) | Little Jim says .... |
// !! | "He fallen in de water !!" |
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