ae6c05ad83
RAID1 arrays don't have a chunk size, but if you ever convert one to RAID5 you will need at least a small one >= 4K. So round of size to a multiple of 64K. This only affect Create, not "--grow --size=max". The latter is too hard and with smaller returns. Signed-off-by: NeilBrown <neilb@suse.de>
15 lines
373 B
Plaintext
15 lines
373 B
Plaintext
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# create a raid1 array with a wrmostly device
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mdadm -CR $md0 -l1 -n3 $dev0 $dev1 --write-mostly $dev2
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testdev $md0 1 $mdsize1a 64
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# unfortunately, we cannot measure if any read requests are going to $dev2
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mdadm -S $md0
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mdadm -CR $md0 -l1 -n3 --write-behind --bitmap=internal --bitmap-chunk=4 $dev0 $dev1 --write-mostly $dev2
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testdev $md0 1 $mdsize1a 64
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mdadm -S $md0
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