| |
| # check that kernel an restripe interpret all the different layouts |
| # the same |
| # This involves changing the layout to each different possibility |
| # while MDADM_GROW_VERIFY is set. |
| |
| testK=$[64*3*6] |
| dd if=/dev/urandom of=/tmp/RandFile bs=1024 count=$testK |
| export MDADM_GROW_VERITY=1 |
| |
| |
| dotest() { |
| sleep 0.5 |
| check wait |
| testdev $md0 $1 $mdsize1 512 nd |
| blockdev --flushbufs $md0 |
| cmp -s -n $[textK*1024] $md0 /tmp/RandFile || { echo cmp failed; exit 2; } |
| # write something new - shift chars 4 space |
| tr ' -~' '$-~ -#' < /tmp/RandFile > /tmp/RandFile2 |
| mv /tmp/RandFile2 /tmp/RandFile |
| dd if=/tmp/RandFile of=$md0 |
| } |
| |
| checkgeo() { |
| # check the geometry of an array |
| # level raid_disks chunk_size layout |
| dev=$1 |
| shift |
| sleep 0.5 |
| check wait |
| for attr in level raid_disks chunk_size layout |
| do |
| if [ $# -gt 0 ] ; then |
| val=$1 |
| shift |
| if [ " `sed 's/ .*//' /sys/block/$dev/md/$attr`" != " $val" ] |
| then echo "$attr doesn't match for $dev" |
| exit 1 |
| fi |
| fi |
| done |
| } |
| |
| |
| bu=/tmp/md-test-backup |
| rm -f $bu |
| |
| # first a degraded 5 device raid5 |
| mdadm -CR $md0 -l5 -n5 $dev0 $dev1 missing $dev2 $dev3 |
| dd if=/tmp/RandFile of=$md0 |
| dotest 4 |
| |
| l5[0]=la |
| l5[1]=ra |
| l5[2]=ls |
| l5[3]=rs |
| l5[4]=parity-first |
| l5[5]=parity-last |
| for layout in 0 1 2 3 4 5 0 |
| do |
| mdadm -G $md0 --layout=${l5[$layout]} --backup-file $bu |
| checkgeo md0 raid5 5 $[512*1024] $layout |
| dotest 4 |
| done |
| |
| mdadm -S $md0 |
| # now a doubly degraded raid6 |
| mdadm -CR $md0 -l6 -n5 $dev0 missing $dev2 missing $dev4 |
| dd if=/tmp/RandFile of=$md0 |
| dotest 3 |
| |
| l6[0]=la |
| l6[1]=ra |
| l6[2]=ls |
| l6[3]=rs |
| l6[4]=parity-first |
| l6[5]=parity-last |
| l6[8]=ddf-zero-restart |
| l6[9]=ddf-N-restart |
| l6[10]=ddf-N-continue |
| l6[16]=left-asymmetric-6 |
| l6[17]=right-asymmetric-6 |
| l6[18]=left-symmetric-6 |
| l6[19]=right-symmetric-6 |
| l6[20]=parity-first-6 |
| for layout in 0 1 2 3 4 5 8 9 10 16 17 18 19 20 0 |
| do |
| mdadm -G $md0 --layout=${l6[$layout]} --backup-file $bu |
| checkgeo md0 raid6 5 $[512*1024] $layout |
| dotest 3 |
| done |