08-09-2011
mdadm unable to fail a resyncing drive?
Hi All
I have a RAID 5 array consisting of 4 drives that had a partial drive failure in one of the drives.
Rebooting shows the faulty drive as background rebuilding and mdadm /dev/ARRAYID shows three drives as in sync with the fourth drive as spare rebuilding.
However the array won't come online instead reporting itself as active, degraded, not started
I want to take the faultyesque drive out of the array as smartctl shows it as just about to fail with a reallocated sectors problem.
I've executed a stop on the array but I can't fail the faulty drive as it just reports "No such device" however mdadm -E /dev/thatdrive reports it belonging to the array and mdadm -D /dev/thatarray shows the drive in the array but with thatdrive as "spare rebuilding".
I've read assorted stuff on this for the last 7-8 hours and short of physically pulling the drive out can't see a way to get the drive out of the array, I've even done a reboot to see if that helped with no effect.
What am I missing?
Thanks in advance.
---------- Post updated at 09:13 PM ---------- Previous update was at 03:25 AM ----------
No one has any ideas?
Wow that's scary how little depth of knowledge for mdadm there is out there.
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