Alright, so I swapped the system board out on my server running Ubuntu 12.04. The OS is on its own drive, and then I have 1 storage drive, and 3 drives in a Raid 5. Well, when booting up with the new board, I get a raid failed error and it drops me to a busybox shell, no matter if I choose yes or no at the boot degraded raid screen, it drops me to shell. I can then exit and get to ubuntu.
shows me that all drives are seen fine, but if I try to run
mdadm --assemble --scan
nothing happens, if I manually specify the drives with
mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 /dev/sde1
then I get several errors, first sda1 is busy, then no superblock found on sdb1, then it aborts.
mdadm --examine /dev/sd*
shows that sda looks good, shows the raid details, knows its a 3 device raid 5, looks great...sdb and sde however show no md superblock detected...
Can anyone help me out here? I have a LOT of data on these drives that I REALLY don't want to lose...I tried to research this before hand and all forums said it was really easy, just run mdadm --assemble --scan and you are done...yeah that didnt work, so please, any help would be appreciated. Thanks.