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# create a simple raid5 set
mdadm -CfR $md0 -e 0.90 -l 5 -n3 $dev0 $dev1 $dev2
check resync
testdev $md0 2 $mdsize0 512
mdadm -S $md0
# now with version-1 superblock
mdadm -CR $md0 -e1 --level=raid5 -n4 $dev0 $dev1 $dev2 $dev3
check recovery
testdev $md0 3 $mdsize1 512
mdadm -S $md0
# now same again with explicit layout
for lo in la ra left-symmetric right-symmetric
do
mdadm -CfR $md0 -l 5 -p $lo -n3 $dev0 $dev1 $dev2
check resync ; check raid5
testdev $md0 2 $mdsize1 512
mdadm -S $md0
# now with version-1 superblock
mdadm -CR $md0 -e1 --level=raid5 --layout $lo -n4 $dev0 $dev1 $dev2 $dev3
check recovery ; check raid5
testdev $md0 3 $mdsize1 512
mdadm -S $md0
done
exit 0
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