92 lines
1.9 KiB
Plaintext
92 lines
1.9 KiB
Plaintext
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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 $mdsize1 512 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=$1
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shift
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if [ " `sed 's/ .*//' /sys/block/$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 $[512*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 $[512*1024] $layout
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dotest 3
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done
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