tests/07reshape5intr

   1
   2 #
   3 # test interrupting and restarting raid5 reshape.
   4 set -x
   5 devs="$dev1"
   6 st=UU
   7 for disks in 2 3 4 5
   8 do
   9   eval devs=\"$devs \$dev$disks\"
  10   st=U$st
  11   for d in $devs
  12   do dd if=/dev/urandom of=$d bs=1024 || true
  13   done
  14
  15   case $disks in
  16    2 | 3) chunk=1024;;
  17    4 ) chunk=512;;
  18    5 ) chunk=256;;
  19   esac
  20
  21   mdadm -CR $md0 -amd -l5 -c $chunk -n$disks --assume-clean $devs
  22   mdadm $md0 --add $dev6
  23   echo 20 > /proc/sys/dev/raid/speed_limit_max
  24   mdadm --grow $md0 -n $[disks+1]
  25   check reshape
  26   check state $st
  27   mdadm --stop $md0
  28   mdadm --assemble $md0 $devs $dev6
  29   check reshape
  30   echo 2000 > /proc/sys/dev/raid/speed_limit_max
  31   check wait
  32   echo check > /sys/block/md0/md/sync_action
  33   check wait
  34   mm=`cat /sys/block/md0/md/mismatch_cnt`
  35   if [ $mm -gt 0 ]
  36   then echo >&2 "ERROR mismatch_cnt non-zero : $mm" ; exit 1
  37   fi
  38   mdadm -S $md0
  39 done