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dm raid: avoid bitmap with raid4/5/6 journal device

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With raid4/5/6, journal device and write intent bitmap are mutually exclusive.

Signed-off-by: Heinz Mauelshagen <[email protected]>
Signed-off-by: Mike Snitzer <[email protected]>
This commit is contained in:
Heinz Mauelshagen 2018-10-12 20:24:25 +02:00 • committed by Mike Snitzer
commit d857ad75ed
1 changed files with 1 additions and 1 deletions
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2
drivers/md/dm-raid.c
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@ -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)) {