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md/raid10 record bad blocks as needed during recovery. 

When recovering one or more devices, if all the good devices have
bad blocks we should record a bad block on the device being rebuilt.

If this fails, we need to abort the recovery.

To ensure we don't think that we aborted later than we actually did,
we need to move the check for MD_RECOVERY_INTR earlier in md_do_sync,
in particular before mddev->curr_resync is updated.

Signed-off-by: NeilBrown <neilb@suse.de>
hifive-unleashed-5.1
NeilBrown 2011-07-28 11:39:24 +10:00
parent 40c356ce5a
commit e875ecea26
2 changed files with 36 additions and 13 deletions
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9
drivers/md/md.c
View File

@ -7165,11 +7165,14 @@ void md_do_sync(mddev_t *mddev)
atomic_add(sectors, &mddev->recovery_active);
}
if (test_bit(MD_RECOVERY_INTR, &mddev->recovery))
break;
j += sectors;
if (j>1) mddev->curr_resync = j;
mddev->curr_mark_cnt = io_sectors;
if (last_check == 0)
/* this is the earliers that rebuilt will be
/* this is the earliest that rebuild will be
* visible in /proc/mdstat
*/
md_new_event(mddev);
@ -7178,10 +7181,6 @@ void md_do_sync(mddev_t *mddev)
continue;
last_check = io_sectors;
if (test_bit(MD_RECOVERY_INTR, &mddev->recovery))
break;
repeat:
if (time_after_eq(jiffies, mark[last_mark] + SYNC_MARK_STEP )) {
/* step marks */

40
drivers/md/raid10.c
View File

@ -2005,7 +2005,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr,
max_sync = RESYNC_PAGES << (PAGE_SHIFT-9);
if (!test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {
/* recovery... the complicated one */
int j, k;
int j;
r10_bio = NULL;
for (i=0 ; i<conf->raid_disks; i++) {
@ -2013,6 +2013,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr,
r10bio_t *rb2;
sector_t sect;
int must_sync;
int any_working;
if (conf->mirrors[i].rdev == NULL ||
test_bit(In_sync, &conf->mirrors[i].rdev->flags))
@ -2064,7 +2065,9 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr,
must_sync = bitmap_start_sync(mddev->bitmap, sect,
&sync_blocks, still_degraded);
any_working = 0;
for (j=0; j<conf->copies;j++) {
int k;
int d = r10_bio->devs[j].devnum;
mdk_rdev_t *rdev;
sector_t sector, first_bad;
@ -2073,6 +2076,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr,
!test_bit(In_sync, &conf->mirrors[d].rdev->flags))
continue;
/* This is where we read from */
any_working = 1;
rdev = conf->mirrors[d].rdev;
sector = r10_bio->devs[j].addr;
@ -2121,16 +2125,35 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr,
break;
}
if (j == conf->copies) {
/* Cannot recover, so abort the recovery */
/* Cannot recover, so abort the recovery or
* record a bad block */
put_buf(r10_bio);
if (rb2)
atomic_dec(&rb2->remaining);
r10_bio = rb2;
if (!test_and_set_bit(MD_RECOVERY_INTR,
&mddev->recovery))
printk(KERN_INFO "md/raid10:%s: insufficient "
"working devices for recovery.\n",
mdname(mddev));
if (any_working) {
/* problem is that there are bad blocks
* on other device(s)
*/
int k;
for (k = 0; k < conf->copies; k++)
if (r10_bio->devs[k].devnum == i)
break;
if (!rdev_set_badblocks(
conf->mirrors[i].rdev,
r10_bio->devs[k].addr,
max_sync, 0))
any_working = 0;
}
if (!any_working) {
if (!test_and_set_bit(MD_RECOVERY_INTR,
&mddev->recovery))
printk(KERN_INFO "md/raid10:%s: insufficient "
"working devices for recovery.\n",
mdname(mddev));
conf->mirrors[i].recovery_disabled
= mddev->recovery_disabled;
}
break;
}
}
@ -2290,7 +2313,8 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr,
return sectors_skipped + nr_sectors;
giveup:
/* There is nowhere to write, so all non-sync
* drives must be failed, so try the next chunk...
* drives must be failed or in resync, all drives
* have a bad block, so try the next chunk...
*/
if (sector_nr + max_sync < max_sector)
max_sector = sector_nr + max_sync;