}
restart() {
- sleep 0.5
check reshape
mdadm -S $md0
mdadm -A $md0 $devs --backup-file=$bu
- sleep 0.5
check reshape
}
restart
checkgeo md0 raid5 5 $[128*1024] 3
-mdadm -G $md0 --array-size 58368
+# It needs to shrink array size first. Choose a value that
+# is power of 2 for array size. If not, it can't change
+# chunk size.
+mdadm -G $md0 --array-size 51200
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 --array-size 18432
mdadm -G $md0 -n 2 -c 256 --backup-file=$bu
restart
checkgeo md0 raid5 2 $[256*1024] 3
+++ /dev/null
-always fails
-
-Fails with errors:
-
- mdadm: this change will reduce the size of the array.
- use --grow --array-size first to truncate array.
- e.g. mdadm --grow /dev/md0 --array-size 56832
-
- ERROR: no reshape happening