62e2991ff9
This case tries to allow raid5 reshape to use backwards direction. It changes chunksize after reshape and stops the raid. Then starts the raid again. Signed-off-by: Xiao Ni <xni@redhat.com> Suggested-by: Jes Sorensen <jes.sorensen@gmail.com> Suggested-by: Zhilong Liu <zlliu@suse.com> Suggested-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Jes Sorensen <jsorensen@fb.com>
54 lines
1.1 KiB
Plaintext
54 lines
1.1 KiB
Plaintext
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# create a small raid5 array, make it larger. Then make it smaller
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mdadm -CR $md0 -e0.90 --level raid5 --chunk=64 --raid-disks 3 --size $[size/2] $dev1 $dev2 $dev3
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check wait
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check state UUU
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testdev $md0 2 $[size/2] 32
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mdadm --grow $md0 --size max
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check resync
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check wait
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testdev $md0 2 $mdsize0 32
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mdadm --grow $md0 --size $[size/2]
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check nosync
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testdev $md0 2 $[size/2] 32
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mdadm -S $md0
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# same again with version 1.1 superblock
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mdadm -CR $md0 --level raid5 --metadata=1.1 --chunk=128 --raid-disks 4 --size $[size/2] $dev1 $dev2 $dev3 $dev4
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check wait
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check state UUUU
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testdev $md0 3 $[size/2] 128
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mdadm --grow $md0 --size max
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check resync
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check wait
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testdev $md0 3 $[mdsize1_l] 128
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mdadm --grow $md0 --size $[size/2]
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check nosync
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sh tests/testdev $md0 3 $[size/2] 128
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mdadm -S $md0
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# create a raid5 array and change the chunk
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mdadm -CR $md0 --level raid5 --metadata=1.1 --chunk=32 --raid-disks 3 --size $[size/2] $dev1 $dev2 $dev3
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check wait
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check state UUU
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check chunk 32
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mdadm $md0 --grow --chunk=64
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check reshape
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check wait
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check chunk 64
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mdadm -S $md0
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mdadm -A $md0 $dev1 $dev2 $dev3
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check state UUU
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check chunk 64
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mdadm -S $md0
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