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set -x -e
# reshape a RAID6 to RAID5 and then RAID0.
# then reshape back up to RAID5 and RAID5
mdadm -CR $md0 -l6 -n5 $dev0 $dev1 $dev2 $dev3 $dev4
check wait; sleep 1
check raid6
testdev $md0 3 19456 512
mdadm -G $md0 -l5
check wait; sleep 1
check raid5
testdev $md0 3 19456 512
mdadm -G $md0 -l0
check wait; sleep 1
check raid0
testdev $md0 3 19456 512
mdadm -G $md0 -l5 --add $dev3 $dev4
check wait; sleep 1
check raid5
check algorithm 2
testdev $md0 3 19456 512
mdadm -G $md0 -l 6
check wait; sleep 1
check raid6
check algorithm 2
testdev $md0 3 19456 512
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