* [PATCH] dm-raid: avoid bitmap with raid4/5/6 journal device
@ 2018-10-12 18:24 Heinz Mauelshagen
0 siblings, 0 replies; only message in thread
From: Heinz Mauelshagen @ 2018-10-12 18:24 UTC (permalink / raw)
To: heinzm, dm-devel; +Cc: snitzer
With raid4/5/6, journal device and write intent bitmap are mutually exclusive.
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
---
drivers/md/dm-raid.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index c44925e4e481..e1dd1622a290 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -2475,7 +2475,7 @@ static int super_validate(struct raid_set *rs, struct md_rdev *rdev)
}
/* Enable bitmap creation for RAID levels != 0 */
- mddev->bitmap_info.offset = rt_is_raid0(rs->raid_type) ? 0 : to_sector(4096);
+ mddev->bitmap_info.offset = (rt_is_raid0(rs->raid_type) || rs->journal_dev.dev) ? 0 : to_sector(4096);
mddev->bitmap_info.default_offset = mddev->bitmap_info.offset;
if (!test_and_clear_bit(FirstUse, &rdev->flags)) {
--
2.17.2
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2018-10-12 18:24 [PATCH] dm-raid: avoid bitmap with raid4/5/6 journal device Heinz Mauelshagen
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