md/raid5: allow layout/chunksize to be changed on an active 2-drive raid5.

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2-drive raid5's aren't very interesting.  But if you are converting
a raid1 into a raid5, you will at least temporarily have one.  And
that it a good time to set the layout/chunksize for the new RAID5
if you aren't happy with the defaults.

layout and chunksize don't actually affect the placement of data
on a 2-drive raid5, so we just do some internal book-keeping.

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

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This commit is contained in:

NeilBrown 2009-03-31 14:56:41 +11:00

parent d562b0c431

commit b354603527

2 changed files with 66 additions and 13 deletions

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37

drivers/md/md.c

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42

drivers/md/raid5.c

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