# Create some raid10 arrays, all with 6 devices and one spare
devs="$dev0 $dev1 $dev2 $dev3 $dev4 $dev5 $dev6"

for lo in n2 n3 f2 f3
do
 cm=1
 case $lo in
   f2 ) m=3 cm=2;;
   f3 ) m=2 cm=3;;
   n2 ) m=3;;
   n3 ) m=2;;
 esac
 mdadm --create --run --level=raid10 --layout $lo --raid-disks 6 -x 1 $md0 $devs
 check resync ; check raid10
 testdev $md0 $m $mdsize1 $[512*cm]
 mdadm -S $md0
done