Test different r5/r6 layouts.
Make sure kernel and restripe agree on all different layouts. Signed-off-by: NeilBrown <neilb@suse.de>
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test
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test
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@ -161,6 +161,7 @@ no_errors() {
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# basic device test
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testdev() {
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udevadm settle
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dev=$1
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cnt=$2
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dvsize=$3
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@ -7,10 +7,10 @@ layouts='ls rs la ra'
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lv=`uname -r`
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if expr $lv '>=' 2.6.30 > /dev/null
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then
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layouts="$layouts parity-first dd-zero-restart ddf-N-restart ddf-N-continue \
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layouts="$layouts parity-first ddf-zero-restart ddf-N-restart ddf-N-continue \
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left-asymmetric-6 right-asymmetric-6 left-symmetric-6 right-symmetric-6 parity-first-6"
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fi
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echo $layouts
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for layout in $layouts
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do
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mdadm -CR $md0 -l6 --layout $layout -n5 $dev0 $dev1 $dev2 $dev3 $dev4
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@ -0,0 +1,60 @@
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#
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# test that we can stop and restart a level change.
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# just test a few in-place changes, and a few
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# size-reducing changes.
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checkgeo() {
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# check the geometry of an array
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# level raid_disks chunk_size layout
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dev=$1
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shift
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sleep 0.5
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check wait
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for attr in level raid_disks chunk_size layout
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do
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if [ $# -gt 0 ] ; then
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val=$1
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shift
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if [ " `cat /sys/block/$dev/md/$attr`" != " $val" ]
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then echo "$attr doesn't match for $dev"
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exit 1
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fi
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fi
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done
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}
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restart() {
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sleep 0.5
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check reshape
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mdadm -S $md0
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mdadm -A $md0 $devs --backup-file=$bu
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sleep 0.5
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check reshape
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}
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bu=/tmp/md-backup
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rm -f $bu
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devs="$dev0 $dev1 $dev2 $dev3 $dev4"
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mdadm -CR $md0 -l5 -n5 -c 256 $devs
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checkgeo md0 raid5 5 $[256*1024] 2
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mdadm -G $md0 -c 128 --backup-file=$bu
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restart
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checkgeo md0 raid5 5 $[128*1024] 2
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mdadm -G $md0 --layout rs --backup-file=$bu
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restart
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checkgeo md0 raid5 5 $[128*1024] 3
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mdadm -G $md0 --array-size 59136
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mdadm -G $md0 --raid-disks 4 -c 64 --backup-file=$bu
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restart
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checkgeo md0 raid5 4 $[64*1024] 3
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devs="$dev0 $dev1 $dev2 $dev3"
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mdadm -G $md0 --array-size 19712
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mdadm -G $md0 -n 2 -c 256 --backup-file=$bu
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restart
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checkgeo md0 raid5 2 $[256*1024] 3
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@ -0,0 +1,91 @@
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# check that kernel an restripe interpret all the different layouts
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# the same
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# This involves changing the layout to each different possibility
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# while MDADM_GROW_VERIFY is set.
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testK=$[64*3*6]
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dd if=/dev/urandom of=/tmp/RandFile bs=1024 count=$testK
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export MDADM_GROW_VERITY=1
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dotest() {
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sleep 0.5
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check wait
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testdev $md0 $1 $mdsize0 64 nd
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blockdev --flushbufs $md0
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cmp -s -n $[textK*1024] $md0 /tmp/RandFile || { echo cmp failed; exit 2; }
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# write something new - shift chars 4 space
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tr ' -~' '$-~ -#' < /tmp/RandFile > /tmp/RandFile2
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mv /tmp/RandFile2 /tmp/RandFile
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dd if=/tmp/RandFile of=$md0
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}
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checkgeo() {
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# check the geometry of an array
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# level raid_disks chunk_size layout
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dev=$1
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shift
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sleep 0.5
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check wait
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for attr in level raid_disks chunk_size layout
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do
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if [ $# -gt 0 ] ; then
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val=$1
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shift
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if [ " `cat /sys/block/$dev/md/$attr`" != " $val" ]
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then echo "$attr doesn't match for $dev"
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exit 1
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fi
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fi
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done
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}
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bu=/tmp/md-test-backup
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rm -f $bu
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# first a degraded 5 device raid5
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mdadm -CR $md0 -l5 -n5 $dev0 $dev1 missing $dev2 $dev3
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dd if=/tmp/RandFile of=$md0
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dotest 4
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l5[0]=la
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l5[1]=ra
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l5[2]=ls
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l5[3]=rs
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l5[4]=parity-first
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l5[5]=parity-last
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for layout in 0 1 2 3 4 5 0
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do
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mdadm -G $md0 --layout=${l5[$layout]} --backup-file $bu
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checkgeo md0 raid5 5 $[64*1024] $layout
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dotest 4
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done
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mdadm -S $md0
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# now a doubly degraded raid6
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mdadm -CR $md0 -l6 -n5 $dev0 missing $dev2 missing $dev4
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dd if=/tmp/RandFile of=$md0
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dotest 3
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l6[0]=la
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l6[1]=ra
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l6[2]=ls
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l6[3]=rs
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l6[4]=parity-first
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l6[5]=parity-last
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l6[8]=ddf-zero-restart
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l6[9]=ddf-N-restart
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l6[10]=ddf-N-continue
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l6[16]=left-asymmetric-6
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l6[17]=right-asymmetric-6
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l6[18]=left-symmetric-6
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l6[19]=right-symmetric-6
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l6[20]=parity-first-6
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for layout in 0 1 2 3 4 5 8 9 10 16 17 18 19 20 0
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do
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mdadm -G $md0 --layout=${l6[$layout]} --backup-file $bu
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checkgeo md0 raid6 5 $[64*1024] $layout
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dotest 3
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done
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@ -1,6 +1,6 @@
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#
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# test interrupting and restartign raid5 reshape.
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# test interrupting and restarting raid5 reshape.
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set -x
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devs="$dev1"
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st=UU
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