tree 7f8b0747385a02c793edd7df30d34c4c9c95b1a5
parent ac5e7113e74872928844d00085bd47c988f12728
author NeilBrown <neilb@suse.de> 1249261195 +1000
committer NeilBrown <neilb@suse.de> 1249261195 +1000

md: when a level change reduces the number of devices, remove the excess.

When an array is changed from RAID6 to RAID5, fewer drives are
needed.  So any device that is made superfluous by the level
conversion must be marked as not-active.
For the RAID6->RAID5 conversion, this will be a drive which only
has 'Q' blocks on it.

Cc: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>