diff options
Diffstat (limited to 'drivers/md/dm-raid.c')
| -rw-r--r-- | drivers/md/dm-raid.c | 72 |
1 files changed, 39 insertions, 33 deletions
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index facaf9142d5..59d15ec0ba8 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -1572,15 +1572,51 @@ static void raid_postsuspend(struct dm_target *ti) mddev_suspend(&rs->md); } -static void raid_resume(struct dm_target *ti) +static void attempt_restore_of_faulty_devices(struct raid_set *rs) { int i; uint64_t failed_devices, cleared_failed_devices = 0; unsigned long flags; struct dm_raid_superblock *sb; - struct raid_set *rs = ti->private; struct md_rdev *r; + for (i = 0; i < rs->md.raid_disks; i++) { + r = &rs->dev[i].rdev; + if (test_bit(Faulty, &r->flags) && r->sb_page && + sync_page_io(r, 0, r->sb_size, r->sb_page, READ, 1)) { + DMINFO("Faulty %s device #%d has readable super block." + " Attempting to revive it.", + rs->raid_type->name, i); + r->raid_disk = i; + r->saved_raid_disk = i; + flags = r->flags; + clear_bit(Faulty, &r->flags); + clear_bit(WriteErrorSeen, &r->flags); + clear_bit(In_sync, &r->flags); + if (r->mddev->pers->hot_add_disk(r->mddev, r)) { + r->raid_disk = -1; + r->saved_raid_disk = -1; + r->flags = flags; + } else { + r->recovery_offset = 0; + cleared_failed_devices |= 1 << i; + } + } + } + if (cleared_failed_devices) { + rdev_for_each(r, &rs->md) { + sb = page_address(r->sb_page); + failed_devices = le64_to_cpu(sb->failed_devices); + failed_devices &= ~cleared_failed_devices; + sb->failed_devices = cpu_to_le64(failed_devices); + } + } +} + +static void raid_resume(struct dm_target *ti) +{ + struct raid_set *rs = ti->private; + set_bit(MD_CHANGE_DEVS, &rs->md.flags); if (!rs->bitmap_loaded) { bitmap_load(&rs->md); @@ -1591,37 +1627,7 @@ static void raid_resume(struct dm_target *ti) * Take this opportunity to check whether any failed * devices are reachable again. */ - for (i = 0; i < rs->md.raid_disks; i++) { - r = &rs->dev[i].rdev; - if (test_bit(Faulty, &r->flags) && r->sb_page && - sync_page_io(r, 0, r->sb_size, - r->sb_page, READ, 1)) { - DMINFO("Faulty device #%d has readable super" - "block. Attempting to revive it.", i); - r->raid_disk = i; - r->saved_raid_disk = i; - flags = r->flags; - clear_bit(Faulty, &r->flags); - clear_bit(WriteErrorSeen, &r->flags); - clear_bit(In_sync, &r->flags); - if (r->mddev->pers->hot_add_disk(r->mddev, r)) { - r->raid_disk = -1; - r->saved_raid_disk = -1; - r->flags = flags; - } else { - r->recovery_offset = 0; - cleared_failed_devices |= 1 << i; - } - } - } - if (cleared_failed_devices) { - rdev_for_each(r, &rs->md) { - sb = page_address(r->sb_page); - failed_devices = le64_to_cpu(sb->failed_devices); - failed_devices &= ~cleared_failed_devices; - sb->failed_devices = cpu_to_le64(failed_devices); - } - } + attempt_restore_of_faulty_devices(rs); } clear_bit(MD_RECOVERY_FROZEN, &rs->md.recovery); |