156044805c
commit cb19a251a5
super1: reserve at least 2 chunks for reshape headroom.
reserved more space in a RAID5, so we need to update to array
sizes when reshaping.
Also make sure reshape tests we change the shape: raid5->raid1
was failing and we didn't notice.
Signed-off-by: NeilBrown <neilb@suse.de>
61 lines
1.2 KiB
Plaintext
61 lines
1.2 KiB
Plaintext
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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 58368
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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 19456
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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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