diff options
| -rw-r--r-- | drivers/md/md.c | 4 | ||||
| -rw-r--r-- | drivers/md/md.h | 9 | ||||
| -rw-r--r-- | drivers/md/raid1.c | 7 | ||||
| -rw-r--r-- | drivers/md/raid1.h | 6 |
4 files changed, 19 insertions, 7 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 77bd8d8..c7d9c6a 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1922,7 +1922,7 @@ static int bind_rdev_to_array(mdk_rdev_t * rdev, mddev_t * mddev) bd_link_disk_holder(rdev->bdev, mddev->gendisk); /* May as well allow recovery to be retried once */ - mddev->recovery_disabled = 0; + mddev->recovery_disabled++; return 0; @@ -7070,7 +7070,7 @@ static int remove_and_add_spares(mddev_t *mddev) } } - if (mddev->degraded && !mddev->recovery_disabled) { + if (mddev->degraded) { list_for_each_entry(rdev, &mddev->disks, same_set) { if (rdev->raid_disk >= 0 && !test_bit(In_sync, &rdev->flags) && diff --git a/drivers/md/md.h b/drivers/md/md.h index 6863f72..de5455d 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -239,9 +239,12 @@ struct mddev_s #define MD_RECOVERY_FROZEN 9 unsigned long recovery; - int recovery_disabled; /* if we detect that recovery - * will always fail, set this - * so we don't loop trying */ + /* If a RAID personality determines that recovery (of a particular + * device) will fail due to a read error on the source device, it + * takes a copy of this number and does not attempt recovery again + * until this number changes. + */ + int recovery_disabled; int in_sync; /* know to not need resync */ /* 'open_mutex' avoids races between 'md_open' and 'do_md_stop', so diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 1d79a04..44069b3 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -956,7 +956,7 @@ static void error(mddev_t *mddev, mdk_rdev_t *rdev) * However don't try a recovery from this drive as * it is very likely to fail. */ - mddev->recovery_disabled = 1; + conf->recovery_disabled = mddev->recovery_disabled; return; } if (test_and_clear_bit(In_sync, &rdev->flags)) { @@ -1052,6 +1052,9 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) int first = 0; int last = mddev->raid_disks - 1; + if (mddev->recovery_disabled == conf->recovery_disabled) + return -EBUSY; + if (rdev->raid_disk >= 0) first = last = rdev->raid_disk; @@ -1107,7 +1110,7 @@ static int raid1_remove_disk(mddev_t *mddev, int number) * is not possible. */ if (!test_bit(Faulty, &rdev->flags) && - !mddev->recovery_disabled && + mddev->recovery_disabled != conf->recovery_disabled && mddev->degraded < conf->raid_disks) { err = -EBUSY; goto abort; diff --git a/drivers/md/raid1.h b/drivers/md/raid1.h index e743a64..3cd18cf 100644 --- a/drivers/md/raid1.h +++ b/drivers/md/raid1.h @@ -48,6 +48,12 @@ struct r1_private_data_s { * (fresh device added). * Cleared when a sync completes. */ + int recovery_disabled; /* when the same as + * mddev->recovery_disabled + * we don't allow recovery + * to be attempted as we + * expect a read error + */ wait_queue_head_t wait_barrier; |
