Commit cf7a4416 authored Oct 16, 2007 by NeilBrown Committed by Linus Torvalds Oct 17, 2007

md: make sure read errors are auto-corrected during a 'check' resync in raid1



Whenever a read error is found, we should attempt to overwrite with correct
data to 'fix' it.

However when do a 'check' pass (which compares data blocks that are
successfully read, but doesn't normally overwrite) we don't do that.  We
should.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent d7f3d291

drivers/md/raid1.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1214,7 +1214,8 @@ static void sync_request_write(mddev_t mddev, r1bio_t r1_bio)
		j = 0;
		if (j >= 0)
		mddev->resync_mismatches += r1_bio->sectors;
		if (j < 0 \|\| test_bit(MD_RECOVERY_CHECK, &mddev->recovery)) {
		if (j < 0 \|\| (test_bit(MD_RECOVERY_CHECK, &mddev->recovery)
		&& test_bit(BIO_UPTODATE, &sbio->bi_flags))) {
		sbio->bi_end_io = NULL;
		rdev_dec_pending(conf->mirrors[i].rdev, mddev);
		} else {