diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/raid1.c | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 97ee870b265d..3a95cc5e029c 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -271,21 +271,25 @@ static int raid1_end_read_request(struct bio *bio, unsigned int bytes_done, int */ update_head_pos(mirror, r1_bio); - if (uptodate || (conf->raid_disks - conf->mddev->degraded) <= 1) { - /* - * Set R1BIO_Uptodate in our master bio, so that - * we will return a good error code for to the higher - * levels even if IO on some other mirrored buffer fails. - * - * The 'master' represents the composite IO operation to - * user-side. So if something waits for IO, then it will - * wait for the 'master' bio. + if (uptodate) + set_bit(R1BIO_Uptodate, &r1_bio->state); + else { + /* If all other devices have failed, we want to return + * the error upwards rather than fail the last device. + * Here we redefine "uptodate" to mean "Don't want to retry" */ - if (uptodate) - set_bit(R1BIO_Uptodate, &r1_bio->state); + unsigned long flags; + spin_lock_irqsave(&conf->device_lock, flags); + if (r1_bio->mddev->degraded == conf->raid_disks || + (r1_bio->mddev->degraded == conf->raid_disks-1 && + !test_bit(Faulty, &conf->mirrors[mirror].rdev->flags))) + uptodate = 1; + spin_unlock_irqrestore(&conf->device_lock, flags); + } + if (uptodate) raid_end_bio_io(r1_bio); - } else { + else { /* * oops, read error: */ @@ -992,13 +996,14 @@ static void error(mddev_t *mddev, mdk_rdev_t *rdev) unsigned long flags; spin_lock_irqsave(&conf->device_lock, flags); mddev->degraded++; + set_bit(Faulty, &rdev->flags); spin_unlock_irqrestore(&conf->device_lock, flags); /* * if recovery is running, make sure it aborts. */ set_bit(MD_RECOVERY_ERR, &mddev->recovery); - } - set_bit(Faulty, &rdev->flags); + } else + set_bit(Faulty, &rdev->flags); set_bit(MD_CHANGE_DEVS, &mddev->flags); printk(KERN_ALERT "raid1: Disk failure on %s, disabling device. \n" " Operation continuing on %d devices\n", |