# # Confirm that raid6check handles all RAID6 layouts. # Try both 4 and 5 devices. layouts='ls rs la ra' lv=`uname -r` if expr $lv '>=' 2.6.30 > /dev/null then layouts="$layouts parity-first ddf-zero-restart ddf-N-restart ddf-N-continue \ left-asymmetric-6 right-asymmetric-6 left-symmetric-6 right-symmetric-6 parity-first-6" fi for layout in $layouts do for devs in 4 5 do dl="$dev0 $dev1 $dev2 $dev3" if [ $devs = 5 ]; then dl="$dl $dev4"; fi mdadm -CR $md0 -l6 --layout $layout -n$devs $dl check wait tar cf - /etc > $md0 ./raid6check $md0 0 0 | grep 'Error detected' && exit 1 mdadm -S $md0 done done