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[PATCH] md: Don't clear bits in bitmap when writing to one device fails during recovery

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Currently a device failure during recovery leaves bits set in the bitmap.
This normally isn't a problem as the offending device will be rejected because
of errors.  However if device re-adding is being used with non-persistent
bitmaps, this can be a problem.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2006-03-31 02:31:57 -08:00 committed by Linus Torvalds
parent 39451a73a2
commit 6b1117d505
1 changed files with 12 additions and 1 deletions
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13
drivers/md/raid1.c
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@ -1135,8 +1135,19 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error)
mirror = i;
break;
}
if (!uptodate)
if (!uptodate) {
int sync_blocks = 0;
sector_t s = r1_bio->sector;
long sectors_to_go = r1_bio->sectors;
/* make sure these bits doesn't get cleared. */
do {
bitmap_end_sync(mddev->bitmap, r1_bio->sector,
&sync_blocks, 1);
s += sync_blocks;
sectors_to_go -= sync_blocks;
} while (sectors_to_go > 0);
md_error(mddev, conf->mirrors[mirror].rdev);
}
update_head_pos(mirror, r1_bio);