tests/07changelevelintr

   1
   2 #
   3 # test that we can stop and restart a level change.
   4 # just test a few in-place changes, and a few
   5 # size-reducing changes.
   6
   7
   8 checkgeo() {
   9  # check the geometry of an array
  10  # level raid_disks chunk_size layout
  11  dev=$1
  12  shift
  13  sleep 0.5
  14  check wait
  15  for attr in level raid_disks chunk_size layout
  16  do
  17    if [ $# -gt 0 ] ; then
  18       val=$1
  19       shift
  20       if [ " `cat /sys/block/$dev/md/$attr`" != " $val" ]
  21       then echo "$attr doesn't match for $dev"
  22            exit 1
  23       fi
  24    fi
  25  done
  26 }
  27
  28 restart() {
  29  sleep 0.5
  30  check reshape
  31  mdadm -S $md0
  32  mdadm -A $md0 $devs --backup-file=$bu
  33  sleep 0.5
  34  check reshape
  35 }
  36
  37 bu=/tmp/md-backup
  38 rm -f $bu
  39 devs="$dev0 $dev1 $dev2 $dev3 $dev4"
  40 mdadm -CR $md0 -l5 -n5 -c 256 $devs
  41 checkgeo md0 raid5 5 $[256*1024] 2
  42
  43 mdadm -G $md0 -c 128 --backup-file=$bu
  44 restart
  45 checkgeo md0 raid5 5 $[128*1024] 2
  46
  47 mdadm -G $md0 --layout rs --backup-file=$bu
  48 restart
  49 checkgeo md0 raid5 5 $[128*1024] 3
  50
  51 mdadm -G $md0 --array-size 59136
  52 mdadm -G $md0 --raid-disks 4 -c 64 --backup-file=$bu
  53 restart
  54 checkgeo md0 raid5 4 $[64*1024] 3
  55
  56 devs="$dev0 $dev1 $dev2 $dev3"
  57 mdadm -G $md0 --array-size 19712
  58 mdadm -G $md0 -n 2 -c 256 --backup-file=$bu
  59 restart
  60 checkgeo md0 raid5 2 $[256*1024] 3