diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/md.c | 4 | ||||
| -rw-r--r-- | drivers/md/raid1.c | 8 | ||||
| -rw-r--r-- | drivers/md/raid10.c | 6 | ||||
| -rw-r--r-- | drivers/md/raid5.c | 2 | ||||
| -rw-r--r-- | drivers/md/raid6main.c | 27 |
5 files changed, 37 insertions, 10 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 78c7418..cd12fca 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1028,7 +1028,6 @@ static int super_1_validate(mddev_t *mddev, mdk_rdev_t *rdev) mddev->size = le64_to_cpu(sb->size)/2; mddev->events = le64_to_cpu(sb->events); mddev->bitmap_offset = 0; - mddev->default_bitmap_offset = 0; mddev->default_bitmap_offset = 1024; mddev->recovery_cp = le64_to_cpu(sb->resync_offset); @@ -2932,6 +2931,9 @@ static int set_array_info(mddev_t * mddev, mdu_array_info_t *info) mddev->sb_dirty = 1; + mddev->default_bitmap_offset = MD_SB_BYTES >> 9; + mddev->bitmap_offset = 0; + /* * Generate a 128 bit UUID */ diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 2da9d3b..3066c58 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -953,9 +953,6 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) int mirror = 0; mirror_info_t *p; - if (rdev->saved_raid_disk >= 0 && - conf->mirrors[rdev->saved_raid_disk].rdev == NULL) - mirror = rdev->saved_raid_disk; for (mirror=0; mirror < mddev->raid_disks; mirror++) if ( !(p=conf->mirrors+mirror)->rdev) { @@ -972,7 +969,10 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) p->head_position = 0; rdev->raid_disk = mirror; found = 1; - if (rdev->saved_raid_disk != mirror) + /* As all devices are equivalent, we don't need a full recovery + * if this was recently any drive of the array + */ + if (rdev->saved_raid_disk < 0) conf->fullsync = 1; rcu_assign_pointer(p->rdev, rdev); break; diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 867f06a..713dc9c 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -552,7 +552,11 @@ static int read_balance(conf_t *conf, r10bio_t *r10_bio) !test_bit(In_sync, &rdev->flags)) continue; - if (!atomic_read(&rdev->nr_pending)) { + /* This optimisation is debatable, and completely destroys + * sequential read speed for 'far copies' arrays. So only + * keep it for 'near' arrays, and review those later. + */ + if (conf->near_copies > 1 && !atomic_read(&rdev->nr_pending)) { disk = ndisk; slot = nslot; break; diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index e2a4028..36d5f8a 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -1704,7 +1704,9 @@ static void raid5d (mddev_t *mddev) if (conf->seq_flush - conf->seq_write > 0) { int seq = conf->seq_flush; + spin_unlock_irq(&conf->device_lock); bitmap_unplug(mddev->bitmap); + spin_lock_irq(&conf->device_lock); conf->seq_write = seq; activate_bit_delay(conf); } diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c index eae5a35..0000d16 100644 --- a/drivers/md/raid6main.c +++ b/drivers/md/raid6main.c @@ -1702,6 +1702,8 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i int data_disks = raid_disks - 2; sector_t max_sector = mddev->size << 1; int sync_blocks; + int still_degraded = 0; + int i; if (sector_nr >= max_sector) { /* just being told to finish up .. nothing much to do */ @@ -1710,7 +1712,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i if (mddev->curr_resync < max_sector) /* aborted */ bitmap_end_sync(mddev->bitmap, mddev->curr_resync, &sync_blocks, 1); - else /* compelted sync */ + else /* completed sync */ conf->fullsync = 0; bitmap_close_sync(mddev->bitmap); @@ -1748,7 +1750,16 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i */ schedule_timeout_uninterruptible(1); } - bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks, 0); + /* Need to check if array will still be degraded after recovery/resync + * We don't need to check the 'failed' flag as when that gets set, + * recovery aborts. + */ + for (i=0; i<mddev->raid_disks; i++) + if (conf->disks[i].rdev == NULL) + still_degraded = 1; + + bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks, still_degraded); + spin_lock(&sh->lock); set_bit(STRIPE_SYNCING, &sh->state); clear_bit(STRIPE_INSYNC, &sh->state); @@ -1784,7 +1795,9 @@ static void raid6d (mddev_t *mddev) if (conf->seq_flush - conf->seq_write > 0) { int seq = conf->seq_flush; + spin_unlock_irq(&conf->device_lock); bitmap_unplug(mddev->bitmap); + spin_lock_irq(&conf->device_lock); conf->seq_write = seq; activate_bit_delay(conf); } @@ -2145,9 +2158,15 @@ static int raid6_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) /* no point adding a device */ return 0; /* - * find the disk ... + * find the disk ... but prefer rdev->saved_raid_disk + * if possible. */ - for (disk=0; disk < mddev->raid_disks; disk++) + if (rdev->saved_raid_disk >= 0 && + conf->disks[rdev->saved_raid_disk].rdev == NULL) + disk = rdev->saved_raid_disk; + else + disk = 0; + for ( ; disk < mddev->raid_disks; disk++) if ((p=conf->disks + disk)->rdev == NULL) { clear_bit(In_sync, &rdev->flags); rdev->raid_disk = disk; |
