diff options
| author | NeilBrown <neilb@suse.de> | 2011-12-23 10:17:57 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2011-12-23 10:17:57 +1100 |
| commit | c19d57980b38a5bb613a898937a1cf85f422fb9b (patch) | |
| tree | ddc9f7ae53a4cd0464240ec8c49c03d35823a103 /drivers/md | |
| parent | 8c7a2c2bcfaf0ee29c74437a4814d1aa780d6a26 (diff) | |
| download | linux-c19d57980b38a5bb613a898937a1cf85f422fb9b.tar.gz linux-c19d57980b38a5bb613a898937a1cf85f422fb9b.tar.bz2 linux-c19d57980b38a5bb613a898937a1cf85f422fb9b.zip | |
md/raid1: recognise replacements when assembling arrays.
If a Replacement is seen, file it as such.
If we see two replacements (or two normal devices) for the one slot,
abort.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/raid1.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index f68075189df8..6df0c41578af 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2453,14 +2453,20 @@ static struct r1conf *setup_conf(struct mddev *mddev) conf->poolinfo->mddev = mddev; + err = -EINVAL; spin_lock_init(&conf->device_lock); list_for_each_entry(rdev, &mddev->disks, same_set) { int disk_idx = rdev->raid_disk; if (disk_idx >= mddev->raid_disks || disk_idx < 0) continue; - disk = conf->mirrors + disk_idx; + if (test_bit(Replacement, &rdev->flags)) + disk = conf->mirrors + conf->raid_disks + disk_idx; + else + disk = conf->mirrors + disk_idx; + if (disk->rdev) + goto abort; disk->rdev = rdev; disk->head_position = 0; @@ -2476,11 +2482,27 @@ static struct r1conf *setup_conf(struct mddev *mddev) conf->pending_count = 0; conf->recovery_disabled = mddev->recovery_disabled - 1; + err = -EIO; conf->last_used = -1; for (i = 0; i < conf->raid_disks * 2; i++) { disk = conf->mirrors + i; + if (i < conf->raid_disks && + disk[conf->raid_disks].rdev) { + /* This slot has a replacement. */ + if (!disk->rdev) { + /* No original, just make the replacement + * a recovering spare + */ + disk->rdev = + disk[conf->raid_disks].rdev; + disk[conf->raid_disks].rdev = NULL; + } else if (!test_bit(In_sync, &disk->rdev->flags)) + /* Original is not in_sync - bad */ + goto abort; + } + if (!disk->rdev || !test_bit(In_sync, &disk->rdev->flags)) { disk->head_position = 0; @@ -2494,7 +2516,6 @@ static struct r1conf *setup_conf(struct mddev *mddev) conf->last_used = i; } - err = -EIO; if (conf->last_used < 0) { printk(KERN_ERR "md/raid1:%s: no operational mirrors\n", mdname(mddev)); |