tests/01raid6integ

   1
   2 # Check integrity of raid6 in degraded modes
   3 # Create a 5 disk raid6, dump some data to it, then
   4 # sh1sum it with different pairs of devices failed
   5
   6 layouts='ls rs la ra'
   7 lv=`uname -r`
   8 if expr $lv '>=' 2.6.30 > /dev/null
   9 then
  10   layouts="$layouts parity-first ddf-zero-restart ddf-N-restart ddf-N-continue \
  11         left-asymmetric-6 right-asymmetric-6 left-symmetric-6 right-symmetric-6 parity-first-6"
  12 fi
  13
  14 for layout in $layouts
  15 do
  16   mdadm -CR $md0 -l6 --layout $layout -n5 $dev0 $dev1 $dev2 $dev3 $dev4
  17   check wait
  18   tar cf - /etc > $md0
  19   sum=`sha1sum $md0`
  20
  21   totest=
  22   for second in $dev0 $dev1 $dev2 $dev3 $dev4
  23   do
  24     mdadm $md0 -f $second
  25     mdadm $md0 -r $second
  26     blockdev --flushbufs $md0
  27     sum1=`sha1sum $md0`
  28     if [ $sum != $sum1 ]
  29     then
  30       echo $sum does not matc $sum1 with $second missing
  31       exit 1
  32     fi
  33     for first in $totest
  34     do
  35        mdadm $md0 -f $first
  36        mdadm $md0 -r $first
  37        blockdev --flushbufs $md0
  38        sum1=`sha1sum $md0`
  39        if [ $sum != $sum1 ]
  40        then
  41          echo $sum does not matc $sum1 with $first and $second missing
  42          exit 1
  43        fi
  44        mdadm $md0 -a $first
  45        check wait
  46     done
  47     mdadm $md0 -a $second
  48     check wait
  49     totest="$totest $second"
  50   done
  51   mdadm -S $md0
  52 done
  53