tests/01raid6integ

   1
   2 # Check integrity of raid6 in degraded modes
   3 # Create a 5 disk raid6, dump some data to it, then
   4 # sha1sum it with different pairs of devices failed
   5
   6 if [ "$INTEGRITY" != "yes" ]; then
   7   echo -ne 'skipping... '
   8   exit 0
   9 fi
  10
  11 layouts='ls rs la ra'
  12 lv=`uname -r`
  13 if expr $lv '>=' 2.6.30 > /dev/null
  14 then
  15   layouts="$layouts parity-first ddf-zero-restart ddf-N-restart ddf-N-continue \
  16         left-asymmetric-6 right-asymmetric-6 left-symmetric-6 right-symmetric-6 parity-first-6"
  17 fi
  18
  19 for layout in $layouts
  20 do
  21   mdadm -CR $md0 -l6 --layout $layout -n5 $dev0 $dev1 $dev2 $dev3 $dev4
  22   check wait
  23   tar cf - /etc > $md0
  24   sum=`sha1sum $md0`
  25
  26   totest=
  27   for second in $dev0 $dev1 $dev2 $dev3 $dev4
  28   do
  29     mdadm $md0 -f $second
  30     mdadm $md0 -r $second
  31     blockdev --flushbufs $md0
  32     sum1=`sha1sum $md0`
  33     if [ "$sum" != "$sum1" ]
  34     then
  35       echo $sum does not match $sum1 with $second missing
  36       exit 1
  37     fi
  38     for first in $totest
  39     do
  40        mdadm $md0 -f $first
  41        mdadm $md0 -r $first
  42        blockdev --flushbufs $md0
  43        sum1=`sha1sum $md0`
  44        if [ "$sum" != "$sum1" ]
  45        then
  46          echo $sum does not match $sum1 with $first and $second missing
  47          exit 1
  48        fi
  49        mdadm $md0 -a $first
  50        check wait
  51     done
  52     mdadm $md0 -a $second
  53     check wait
  54     totest="$totest $second"
  55   done
  56   mdadm -S $md0
  57 done