| # create a raid1 array with a wrmostly device | |
| mdadm -CR $md0 -l1 -n3 $dev0 $dev1 --write-mostly $dev2 | |
| testdev $md0 1 $mdsize1a 64 | |
| # unfortunately, we cannot measure if any read requests are going to $dev2 | |
| mdadm -S $md0 | |
| mdadm -CR $md0 -l1 -n3 --write-behind --bitmap=internal --bitmap-chunk=4 $dev0 $dev1 --write-mostly $dev2 | |
| testdev $md0 1 $mdsize1a 64 | |
| mdadm -S $md0 |