On Thu, Jan 10, 2013 at 12:19 PM, chris <tknchris@xxxxxxxxx> wrote: > Hi Dave, > > Thanks for the tip, this has gotten me further > > # mdadm --assemble --scan > # cat /proc/mdstat > Personalities : > md127 : inactive sdd[1](S) sdb[0](S) > 4520 blocks super external:imsm > > So atleast now it has created an array of sorts but it only has 2 out > of the 4 disks it should and also all disks appear to be marked as > spares. > > Would I follow the same logic as typical mdadm recovery where I need > to create the array again with the right layout and disks in right > order and gain access to data without wiping it ? > > Any advice what direction to go in from here? > Backup the disks you have if possible. Don't recreate the array with all 4 disks be sure to specify a missing slot. With mdadm-3.2.5 you do have support for creating imsm arrays with 'missing' slots [1]. Then you can test some recreations to see if you can find data. At a minimum you know that sdb and sdd are in slot 2, 3, so the question is finding a good candidate for slot 0, or 1. It's a bit concerning that the superblocks for those have been lost, or those disks weren't moved over? You can look for serial numbers in /dev/disks/by-id. -- Dan [1]: http://marc.info/?l=linux-raid&m=131432484118038&w=2 -- 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
