| |
| # |
| # test that we can stop and restart a level change. |
| # just test a few in-place changes, and a few |
| # size-reducing changes. |
| |
| |
| checkgeo() { |
| # check the geometry of an array |
| # level raid_disks chunk_size layout |
| dev=$1 |
| shift |
| sleep 0.5 |
| check wait |
| sleep 1 |
| for attr in level raid_disks chunk_size layout |
| do |
| if [ $# -gt 0 ] ; then |
| val=$1 |
| shift |
| if [ " `cat /sys/block/$dev/md/$attr`" != " $val" ] |
| then echo "$attr doesn't match for $dev" |
| exit 1 |
| fi |
| fi |
| done |
| } |
| |
| restart() { |
| sleep 0.5 |
| check reshape |
| mdadm -S $md0 |
| mdadm -A $md0 $devs --backup-file=$bu |
| sleep 0.5 |
| check reshape |
| } |
| |
| bu=/tmp/md-backup |
| rm -f $bu |
| devs="$dev0 $dev1 $dev2 $dev3 $dev4" |
| mdadm -CR $md0 -l5 -n5 -c 256 $devs |
| checkgeo md0 raid5 5 $[256*1024] 2 |
| |
| mdadm -G $md0 -c 128 --backup-file=$bu |
| restart |
| checkgeo md0 raid5 5 $[128*1024] 2 |
| |
| mdadm -G $md0 --layout rs --backup-file=$bu |
| restart |
| checkgeo md0 raid5 5 $[128*1024] 3 |
| |
| mdadm -G $md0 --array-size 58368 |
| mdadm -G $md0 --raid-disks 4 -c 64 --backup-file=$bu |
| restart |
| checkgeo md0 raid5 4 $[64*1024] 3 |
| |
| devs="$dev0 $dev1 $dev2 $dev3" |
| mdadm -G $md0 --array-size 19456 |
| mdadm -G $md0 -n 2 -c 256 --backup-file=$bu |
| restart |
| checkgeo md0 raid5 2 $[256*1024] 3 |