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authorNeilBrown <neilb@suse.de>2013-06-26 05:55:20 +0400
committerNeilBrown <neilb@suse.de>2013-06-26 06:38:19 +0400
commiteea136d69f9facb2d3807386bbac1e6b1161795f (patch)
treebad385398a19c3c91774d2c85fd72842deb3944a /drivers/md/raid0.c
parent725d6e579f06360744fc101b1af2f82d8aa282f1 (diff)
downloadlinux-eea136d69f9facb2d3807386bbac1e6b1161795f.tar.xz
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 <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid0.c')
-rw-r--r--drivers/md/raid0.c1
1 files changed, 1 insertions, 0 deletions
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 */