Is there any mdadm command that would have given any info or metadata from the previous array? I have almost 9 months of SSH logging on my laptop that I use to manage the array. Maybe there's some useful info left in the log that might help. -Tim On Fri, Sep 18, 2009 at 1:07 AM, Robin Hill <robin@xxxxxxxxxxxxxxx> wrote: > 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 !!" | > -- -tim -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
