diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/md.c | 35 | ||||
| -rw-r--r-- | drivers/md/md.h | 3 | ||||
| -rw-r--r-- | drivers/md/raid0.c | 11 | ||||
| -rw-r--r-- | drivers/md/raid0.h | 3 | ||||
| -rw-r--r-- | drivers/md/raid10.c | 19 | ||||
| -rw-r--r-- | drivers/md/raid10.h | 5 |
6 files changed, 41 insertions, 35 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 4edcda8f486..4869128bf74 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -3001,6 +3001,9 @@ level_store(mddev_t *mddev, const char *buf, size_t len) return -EINVAL; } + list_for_each_entry(rdev, &mddev->disks, same_set) + rdev->new_raid_disk = rdev->raid_disk; + /* ->takeover must set new_* and/or delta_disks * if it succeeds, and may set them when it fails. */ @@ -3051,13 +3054,35 @@ level_store(mddev_t *mddev, const char *buf, size_t len) mddev->safemode = 0; } - module_put(mddev->pers->owner); - /* Invalidate devices that are now superfluous */ - list_for_each_entry(rdev, &mddev->disks, same_set) - if (rdev->raid_disk >= mddev->raid_disks) { - rdev->raid_disk = -1; + list_for_each_entry(rdev, &mddev->disks, same_set) { + char nm[20]; + if (rdev->raid_disk < 0) + continue; + if (rdev->new_raid_disk > mddev->raid_disks) + rdev->new_raid_disk = -1; + if (rdev->new_raid_disk == rdev->raid_disk) + continue; + sprintf(nm, "rd%d", rdev->raid_disk); + sysfs_remove_link(&mddev->kobj, nm); + } + list_for_each_entry(rdev, &mddev->disks, same_set) { + if (rdev->raid_disk < 0) + continue; + if (rdev->new_raid_disk == rdev->raid_disk) + continue; + rdev->raid_disk = rdev->new_raid_disk; + if (rdev->raid_disk < 0) clear_bit(In_sync, &rdev->flags); + else { + char nm[20]; + sprintf(nm, "rd%d", rdev->raid_disk); + if(sysfs_create_link(&mddev->kobj, &rdev->kobj, nm)) + printk("md: cannot register %s for %s after level change\n", + nm, mdname(mddev)); } + } + + module_put(mddev->pers->owner); mddev->pers = pers; mddev->private = priv; strlcpy(mddev->clevel, pers->name, sizeof(mddev->clevel)); diff --git a/drivers/md/md.h b/drivers/md/md.h index 7ab5ea15545..10597bfec00 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -78,6 +78,9 @@ struct mdk_rdev_s int desc_nr; /* descriptor index in the superblock */ int raid_disk; /* role of device in array */ + int new_raid_disk; /* role that the device will have in + * the array after a level-change completes. + */ int saved_raid_disk; /* role that device used to have in the * array and could again if we did a partial * resync from the bitmap diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index e70f004c99e..7c7c38058bc 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -173,9 +173,11 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf) list_for_each_entry(rdev1, &mddev->disks, same_set) { int j = rdev1->raid_disk; - if (mddev->level == 10) + if (mddev->level == 10) { /* taking over a raid10-n2 array */ j /= 2; + rdev1->new_raid_disk = j; + } if (j < 0 || j >= mddev->raid_disks) { printk(KERN_ERR "md/raid0:%s: bad disk number %d - " @@ -361,12 +363,6 @@ static int raid0_run(mddev_t *mddev) mddev->private = conf; } conf = mddev->private; - if (conf->scale_raid_disks) { - int i; - for (i=0; i < conf->strip_zone[0].nb_dev; i++) - conf->devlist[i]->raid_disk /= conf->scale_raid_disks; - /* FIXME update sysfs rd links */ - } /* calculate array device size */ md_set_array_sectors(mddev, raid0_size(mddev, 0, 0)); @@ -643,7 +639,6 @@ static void *raid0_takeover_raid10(mddev_t *mddev) mddev->recovery_cp = MaxSector; create_strip_zones(mddev, &priv_conf); - priv_conf->scale_raid_disks = 2; return priv_conf; } diff --git a/drivers/md/raid0.h b/drivers/md/raid0.h index d724e664ca4..91f8e876ee6 100644 --- a/drivers/md/raid0.h +++ b/drivers/md/raid0.h @@ -13,9 +13,6 @@ struct raid0_private_data struct strip_zone *strip_zone; mdk_rdev_t **devlist; /* lists of rdevs, pointed to by strip_zone->dev */ int nr_strip_zones; - int scale_raid_disks; /* divide rdev->raid_disks by this in run() - * to handle conversion from raid10 - */ }; typedef struct raid0_private_data raid0_conf_t; diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 6d420cb487b..1bab3559f3e 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -2241,7 +2241,6 @@ static conf_t *setup_conf(mddev_t *mddev) if (!conf->thread) goto out; - conf->scale_disks = 0; conf->mddev = mddev; return conf; @@ -2300,11 +2299,6 @@ static int run(mddev_t *mddev) if (disk_idx >= conf->raid_disks || disk_idx < 0) continue; - if (conf->scale_disks) { - disk_idx *= conf->scale_disks; - rdev->raid_disk = disk_idx; - /* MOVE 'rd%d' link !! */ - } disk = conf->mirrors + disk_idx; disk->rdev = rdev; @@ -2435,13 +2429,6 @@ static void *raid10_takeover_raid0(mddev_t *mddev) return ERR_PTR(-EINVAL); } - /* Update slot numbers to obtain - * degraded raid10 with missing mirrors - */ - list_for_each_entry(rdev, &mddev->disks, same_set) { - rdev->raid_disk *= 2; - } - /* Set new parameters */ mddev->new_level = 10; /* new layout: far_copies = 1, near_copies = 2 */ @@ -2454,7 +2441,11 @@ static void *raid10_takeover_raid0(mddev_t *mddev) mddev->recovery_cp = MaxSector; conf = setup_conf(mddev); - conf->scale_disks = 2; + if (!IS_ERR(conf)) + list_for_each_entry(rdev, &mddev->disks, same_set) + if (rdev->raid_disk >= 0) + rdev->new_raid_disk = rdev->raid_disk * 2; + return conf; } diff --git a/drivers/md/raid10.h b/drivers/md/raid10.h index 3824a087e17..2316ac2e8e2 100644 --- a/drivers/md/raid10.h +++ b/drivers/md/raid10.h @@ -38,11 +38,6 @@ struct r10_private_data_s { int chunk_shift; /* shift from chunks to sectors */ sector_t chunk_mask; - int scale_disks; /* When starting array, multiply - * each ->raid_disk by this. - * Need for raid0->raid10 migration - */ - struct list_head retry_list; /* queue pending writes and submit them on unplug */ struct bio_list pending_bio_list; |