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Grow: print useful error when converting RAID1->RAID5 will fail.
authorNeilBrown <neilb@suse.de>
Thu, 22 Mar 2012 06:00:57 +0000 (17:00 +1100)
committerNeilBrown <neilb@suse.de>
Thu, 22 Mar 2012 06:00:57 +0000 (17:00 +1100)
commit5ca3a902fd576426c891ec3c20d1edd65d917c5d
tree107b08007fa3e7128374b62d23e56cddfd87ae7btree | snapshot
parentae6c05ad83eaa06f70bec0b0120c6befa9be5870commit | diff
Grow: print useful error when converting RAID1->RAID5 will fail.

RAID1 can only be converted to RAID0 or RAID5 if the size is
a multiple of 4K as we cannot have chunks smaller than 4K.

If this might happen, report a useful error message.

Signed-off-by: NeilBrown <neilb@suse.de>
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