3 # create a raid1 array with a wrmostly device
5 mdadm -CR $md0 -l1 -n3 $dev0 $dev1 --write-mostly $dev2
6 testdev $md0 1 $mdsize0 64
8 # unfortunately, we cannot measure if any read requests are going to $dev2
12 mdadm -CR $md0 -l1 -n3 --write-behind --bitmap=internal $dev0 $dev1 --write-mostly $dev2
13 testdev $md0 1 $mdsize0 64