So let's say we have a RAID 6 array:
md0: active raid6 sda1[X] sdb1[X] sdc1[X] sdd1[X] sde1[X]... ... [UU_UU...
sdc1 has failed so I mark it as faulty in preparation to remove it.
mdadm --manage /dev/md0 --fail /dev/sdc1
And what I get is this:
md0: active raid6 sda1[X] sdb1[X] sdc1[X](F) sdd1[X] sde1[X]... ...[UU_U_...
Now I have two drives not working, one of which is probably okay.
What on Earth just happened, where did I go wrong, and how can I undo it?
Edit: issue was that the real faulty drive had already been removed.
Last edited by Gullible Jones (2013-01-31 16:05:30)