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md/raid10: record bad blocks due to write errors during resync/recovery.

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If we get a write error during resync/recovery don't fail the device
but instead record a bad block.  If that fails we can then fail the
device.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2011-07-28 11:39:25 +10:00
parent f84ee364dd
commit 1a0b7cd826
1 changed files with 23 additions and 10 deletions
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33
drivers/md/raid10.c
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@ -1452,9 +1452,10 @@ static void end_sync_write(struct bio *bio, int error)
d = find_bio_disk(conf, r10_bio, bio, &slot);
if (!uptodate)
md_error(mddev, conf->mirrors[d].rdev);
else if (is_badblock(conf->mirrors[d].rdev,
if (!uptodate) {
set_bit(WriteErrorSeen, &conf->mirrors[d].rdev->flags);
set_bit(R10BIO_WriteError, &r10_bio->state);
} else if (is_badblock(conf->mirrors[d].rdev,
r10_bio->devs[slot].addr,
r10_bio->sectors,
&first_bad, &bad_sectors))
@ -1465,7 +1466,8 @@ static void end_sync_write(struct bio *bio, int error)
if (r10_bio->master_bio == NULL) {
/* the primary of several recovery bios */
sector_t s = r10_bio->sectors;
if (test_bit(R10BIO_MadeGood, &r10_bio->state))
if (test_bit(R10BIO_MadeGood, &r10_bio->state) ||
test_bit(R10BIO_WriteError, &r10_bio->state))
reschedule_retry(r10_bio);
else
put_buf(r10_bio);
@ -1473,7 +1475,8 @@ static void end_sync_write(struct bio *bio, int error)
break;
} else {
r10bio_t *r10_bio2 = (r10bio_t *)r10_bio->master_bio;
if (test_bit(R10BIO_MadeGood, &r10_bio->state))
if (test_bit(R10BIO_MadeGood, &r10_bio->state) ||
test_bit(R10BIO_WriteError, &r10_bio->state))
reschedule_retry(r10_bio);
else
put_buf(r10_bio);
@ -2029,23 +2032,33 @@ static void handle_write_completed(conf_t *conf, r10bio_t *r10_bio)
/* Some sort of write request has finished and it
* succeeded in writing where we thought there was a
* bad block. So forget the bad block.
* Or possibly if failed and we need to record
* a bad block.
*/
int m;
mdk_rdev_t *rdev;
if (test_bit(R10BIO_IsSync, &r10_bio->state) ||
test_bit(R10BIO_IsRecover, &r10_bio->state)) {
for (m = 0; m < conf->copies; m++)
if (r10_bio->devs[m].bio &&
test_bit(BIO_UPTODATE,
for (m = 0; m < conf->copies; m++) {
int dev = r10_bio->devs[m].devnum;
rdev = conf->mirrors[dev].rdev;
if (r10_bio->devs[m].bio == NULL)
continue;
if (test_bit(BIO_UPTODATE,
&r10_bio->devs[m].bio->bi_flags)) {
int dev = r10_bio->devs[m].devnum;
rdev = conf->mirrors[dev].rdev;
rdev_clear_badblocks(
rdev,
r10_bio->devs[m].addr,
r10_bio->sectors);
} else {
if (!rdev_set_badblocks(
rdev,
r10_bio->devs[m].addr,
r10_bio->sectors, 0))
md_error(conf->mddev, rdev);
}
}
put_buf(r10_bio);
} else {
for (m = 0; m < conf->copies; m++) {