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authorNeilBrown <neilb@suse.de>2013-07-04 16:38:16 +1000
committerNeilBrown <neilb@suse.de>2013-07-04 16:42:52 +1000
commitfdcfbbb653b27964c4daa4d2bcb364259c257e7d (patch)
tree1ea7bffe6fbd61874922fb9da20c0a9157a9d71c /firmware/ositech
parent78eaa0d4cbcdb345992fa3dd22b3bcbb473cc064 (diff)
downloadblackbird-op-linux-fdcfbbb653b27964c4daa4d2bcb364259c257e7d.tar.gz
blackbird-op-linux-fdcfbbb653b27964c4daa4d2bcb364259c257e7d.zip
md/raid5: allow 5-device RAID6 to be reshaped to 4-device.
There is a bug in 'check_reshape' for raid5.c To checks that the new minimum number of devices is large enough (which is good), but it does so also after the reshape has started (bad). This is bad because - the calculation is now wrong as mddev->raid_disks has changed already, and - it is pointless because it is now too late to stop. So only perform that test when reshape has not been committed to. Signed-off-by: NeilBrown <neilb@suse.de>
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