set -e -x

# revert a reshape that is decreasing the number of devices,
# raid5, raid6, and raid10

bu=$targetdir/md-backup
rm -f $bu
# RAID5
mdadm -CR --assume-clean $md0 -l5 -n5  $devlist4
check raid5
testdev $md0 4 $mdsize1 512
mdadm --grow $md0 --array-size 56832
testdev $md0 3 $mdsize1 512
mdadm -G $md0 -n 4 --backup=$bu
sleep 3
mdadm -S $md0
mdadm -A $md0 --update=revert-reshape $devlist4 --backup-file=$bu
check wait
check raid5
fsck -f -n $md0
testdev $md0 4 $mdsize1 512
mdadm -S $md0

#FIXME
rm -f $bu
# RAID6
mdadm -CR --assume-clean $md0 -l6 -n5 $devlist4
check raid6
testdev $md0 3 $mdsize1 512
mdadm --grow $md0 --array-size 37888
testdev $md0 2 $mdsize1 512
mdadm -G $md0 -n 4 --backup=$bu
sleep 2
mdadm -S $md0
mdadm -A $md0 --update=revert-reshape $devlist4 --backup-file=$bu
check wait
check raid6
fsck -f -n $md0
testdev $md0 3 $mdsize1 512
mdadm -S $md0

# RAID10
mdadm -CR --assume-clean $md0 -l10 -n6 $devlist5
check raid10
testdev $md0 3 $mdsize1 512
mdadm --grow $md0 --array-size 36864
testdev $md0 2 $mdsize1 512
mdadm -G $md0 -n 4
sleep 3
mdadm -S $md0
mdadm -A $md0 --update=revert-reshape $devlist5
check wait
check raid10
fsck -f -n $md0
testdev $md0 3 $mdsize1 512
mdadm -S $md0