Guy wrote:
NO!!!!!
Bad plan, but almost correct.
If you "--add" a disk, md would think it is a new disk. And none of the
existing data would be used. The array would not start anyway. But if you
use the instructions below, you should get your array back to normal.
OK, that's encouraging :)
+ Stop array:mdadm: fail to stop array /dev/md0: Device or resource busy
+ "mdadm /dev/md0 -S"
Basically they're still mounted and can't unmount 'cos the nfsds are running.
Is a reboot the right thing? (back into single user)
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