# create a simple raid0 mdadm -CR $md0 -l raid0 -n3 $dev0 $dev1 $dev2 check raid0 testdev $md0 3 $mdsize2_l 512 mdadm -S $md0 # verify raid0 with layouts fail for 0.90 mdadm -CR $md0 -e0.90 -l0 -n4 $dev0 $dev1 $dev2 $dev3 check opposite_result # now with no superblock mdadm -B $md0 -l0 -n5 $dev0 $dev1 $dev2 $dev3 $dev4 check raid0 testdev $md0 5 $size 512 mdadm -S $md0 if [ "$LINEAR" != "yes" ]; then echo -ne 'skipping... ' exit 0 fi # now same again with different chunk size for chunk in 4 32 256 do mdadm -CR $md0 -e0.90 -l linear --chunk $chunk -n3 $dev0 $dev1 $dev2 check linear testdev $md0 3 $mdsize0 $chunk mdadm -S $md0 # now with version-1 superblock mdadm -CR $md0 -e1.0 -l0 -c $chunk -n4 $dev0 $dev1 $dev2 $dev3 check raid0 testdev $md0 4 $mdsize1 $chunk mdadm -S $md0 # now with no superblock mdadm -B $md0 -l0 -n5 --chun=$chunk $dev0 $dev1 $dev2 $dev3 $dev4 check raid0 testdev $md0 5 $size $chunk mdadm -S $md0 done exit 0