From eea136d69f9facb2d3807386bbac1e6b1161795f Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 26 Jun 2013 11:55:20 +1000 Subject: md: fix buglet in RAID5 -> RAID0 conversion. RAID5 uses a 'per-array' value for the 'size' of each device. RAID0 uses a 'per-device' value - it can be different for each device. When converting a RAID5 to a RAID0 we must ensure that the per-device size of each device matches the per-array size for the RAID5, else the array will change size. If the metadata cannot record a changed per-device size (as is the case with v0.90 metadata) the array could get bigger on restart. This does not cause data corruption, so it not a big issue and is mainly yet another a reason to not use 0.90. Signed-off-by: NeilBrown --- drivers/md/raid0.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/md/raid0.c') diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index fcf65e512cf5..c4d420b7d2f4 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -597,6 +597,7 @@ static void *raid0_takeover_raid45(struct mddev *mddev) mdname(mddev)); return ERR_PTR(-EINVAL); } + rdev->sectors = mddev->dev_sectors; } /* Set new parameters */ -- cgit