diff options
| -rw-r--r-- | drivers/md/raid0.c | 110 |
1 files changed, 65 insertions, 45 deletions
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 9f9c6b76ca7c..dc38c1a45166 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c | |||
| @@ -75,10 +75,10 @@ static void dump_zones(mddev_t *mddev) | |||
| 75 | for (j = 0; j < conf->nr_strip_zones; j++) { | 75 | for (j = 0; j < conf->nr_strip_zones; j++) { |
| 76 | printk(KERN_INFO "zone%d=[", j); | 76 | printk(KERN_INFO "zone%d=[", j); |
| 77 | for (k = 0; k < conf->strip_zone[j].nb_dev; k++) | 77 | for (k = 0; k < conf->strip_zone[j].nb_dev; k++) |
| 78 | printk("%s/", | 78 | printk(KERN_CONT "%s/", |
| 79 | bdevname(conf->devlist[j*raid_disks | 79 | bdevname(conf->devlist[j*raid_disks |
| 80 | + k]->bdev, b)); | 80 | + k]->bdev, b)); |
| 81 | printk("]\n"); | 81 | printk(KERN_CONT "]\n"); |
| 82 | 82 | ||
| 83 | zone_size = conf->strip_zone[j].zone_end - zone_start; | 83 | zone_size = conf->strip_zone[j].zone_end - zone_start; |
| 84 | printk(KERN_INFO " zone offset=%llukb " | 84 | printk(KERN_INFO " zone offset=%llukb " |
| @@ -104,8 +104,9 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf) | |||
| 104 | if (!conf) | 104 | if (!conf) |
| 105 | return -ENOMEM; | 105 | return -ENOMEM; |
| 106 | list_for_each_entry(rdev1, &mddev->disks, same_set) { | 106 | list_for_each_entry(rdev1, &mddev->disks, same_set) { |
| 107 | printk(KERN_INFO "raid0: looking at %s\n", | 107 | printk(KERN_INFO "md/raid0:%s: looking at %s\n", |
| 108 | bdevname(rdev1->bdev,b)); | 108 | mdname(mddev), |
| 109 | bdevname(rdev1->bdev, b)); | ||
| 109 | c = 0; | 110 | c = 0; |
| 110 | 111 | ||
| 111 | /* round size to chunk_size */ | 112 | /* round size to chunk_size */ |
| @@ -114,14 +115,16 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf) | |||
| 114 | rdev1->sectors = sectors * mddev->chunk_sectors; | 115 | rdev1->sectors = sectors * mddev->chunk_sectors; |
| 115 | 116 | ||
| 116 | list_for_each_entry(rdev2, &mddev->disks, same_set) { | 117 | list_for_each_entry(rdev2, &mddev->disks, same_set) { |
| 117 | printk(KERN_INFO "raid0: comparing %s(%llu)", | 118 | printk(KERN_INFO "md/raid0:%s: comparing %s(%llu)", |
| 119 | mdname(mddev), | ||
| 118 | bdevname(rdev1->bdev,b), | 120 | bdevname(rdev1->bdev,b), |
| 119 | (unsigned long long)rdev1->sectors); | 121 | (unsigned long long)rdev1->sectors); |
| 120 | printk(KERN_INFO " with %s(%llu)\n", | 122 | printk(KERN_CONT " with %s(%llu)\n", |
| 121 | bdevname(rdev2->bdev,b), | 123 | bdevname(rdev2->bdev,b), |
| 122 | (unsigned long long)rdev2->sectors); | 124 | (unsigned long long)rdev2->sectors); |
| 123 | if (rdev2 == rdev1) { | 125 | if (rdev2 == rdev1) { |
| 124 | printk(KERN_INFO "raid0: END\n"); | 126 | printk(KERN_INFO "md/raid0:%s: END\n", |
| 127 | mdname(mddev)); | ||
| 125 | break; | 128 | break; |
| 126 | } | 129 | } |
| 127 | if (rdev2->sectors == rdev1->sectors) { | 130 | if (rdev2->sectors == rdev1->sectors) { |
| @@ -129,20 +132,24 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf) | |||
| 129 | * Not unique, don't count it as a new | 132 | * Not unique, don't count it as a new |
| 130 | * group | 133 | * group |
| 131 | */ | 134 | */ |
| 132 | printk(KERN_INFO "raid0: EQUAL\n"); | 135 | printk(KERN_INFO "md/raid0:%s: EQUAL\n", |
| 136 | mdname(mddev)); | ||
| 133 | c = 1; | 137 | c = 1; |
| 134 | break; | 138 | break; |
| 135 | } | 139 | } |
| 136 | printk(KERN_INFO "raid0: NOT EQUAL\n"); | 140 | printk(KERN_INFO "md/raid0:%s: NOT EQUAL\n", |
| 141 | mdname(mddev)); | ||
| 137 | } | 142 | } |
| 138 | if (!c) { | 143 | if (!c) { |
| 139 | printk(KERN_INFO "raid0: ==> UNIQUE\n"); | 144 | printk(KERN_INFO "md/raid0:%s: ==> UNIQUE\n", |
| 145 | mdname(mddev)); | ||
| 140 | conf->nr_strip_zones++; | 146 | conf->nr_strip_zones++; |
| 141 | printk(KERN_INFO "raid0: %d zones\n", | 147 | printk(KERN_INFO "md/raid0:%s: %d zones\n", |
| 142 | conf->nr_strip_zones); | 148 | mdname(mddev), conf->nr_strip_zones); |
| 143 | } | 149 | } |
| 144 | } | 150 | } |
| 145 | printk(KERN_INFO "raid0: FINAL %d zones\n", conf->nr_strip_zones); | 151 | printk(KERN_INFO "md/raid0:%s: FINAL %d zones\n", |
| 152 | mdname(mddev), conf->nr_strip_zones); | ||
| 146 | err = -ENOMEM; | 153 | err = -ENOMEM; |
| 147 | conf->strip_zone = kzalloc(sizeof(struct strip_zone)* | 154 | conf->strip_zone = kzalloc(sizeof(struct strip_zone)* |
| 148 | conf->nr_strip_zones, GFP_KERNEL); | 155 | conf->nr_strip_zones, GFP_KERNEL); |
| @@ -170,13 +177,13 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf) | |||
| 170 | j /= 2; | 177 | j /= 2; |
| 171 | 178 | ||
| 172 | if (j < 0 || j >= mddev->raid_disks) { | 179 | if (j < 0 || j >= mddev->raid_disks) { |
| 173 | printk(KERN_ERR "raid0: bad disk number %d - " | 180 | printk(KERN_ERR "md/raid0:%s: bad disk number %d - " |
| 174 | "aborting!\n", j); | 181 | "aborting!\n", mdname(mddev), j); |
| 175 | goto abort; | 182 | goto abort; |
| 176 | } | 183 | } |
| 177 | if (dev[j]) { | 184 | if (dev[j]) { |
| 178 | printk(KERN_ERR "raid0: multiple devices for %d - " | 185 | printk(KERN_ERR "md/raid0:%s: multiple devices for %d - " |
| 179 | "aborting!\n", j); | 186 | "aborting!\n", mdname(mddev), j); |
| 180 | goto abort; | 187 | goto abort; |
| 181 | } | 188 | } |
| 182 | dev[j] = rdev1; | 189 | dev[j] = rdev1; |
| @@ -198,8 +205,8 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf) | |||
| 198 | cnt++; | 205 | cnt++; |
| 199 | } | 206 | } |
| 200 | if (cnt != mddev->raid_disks) { | 207 | if (cnt != mddev->raid_disks) { |
| 201 | printk(KERN_ERR "raid0: too few disks (%d of %d) - " | 208 | printk(KERN_ERR "md/raid0:%s: too few disks (%d of %d) - " |
| 202 | "aborting!\n", cnt, mddev->raid_disks); | 209 | "aborting!\n", mdname(mddev), cnt, mddev->raid_disks); |
| 203 | goto abort; | 210 | goto abort; |
| 204 | } | 211 | } |
| 205 | zone->nb_dev = cnt; | 212 | zone->nb_dev = cnt; |
| @@ -215,39 +222,44 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf) | |||
| 215 | zone = conf->strip_zone + i; | 222 | zone = conf->strip_zone + i; |
| 216 | dev = conf->devlist + i * mddev->raid_disks; | 223 | dev = conf->devlist + i * mddev->raid_disks; |
| 217 | 224 | ||
| 218 | printk(KERN_INFO "raid0: zone %d\n", i); | 225 | printk(KERN_INFO "md/raid0:%s: zone %d\n", |
| 226 | mdname(mddev), i); | ||
| 219 | zone->dev_start = smallest->sectors; | 227 | zone->dev_start = smallest->sectors; |
| 220 | smallest = NULL; | 228 | smallest = NULL; |
| 221 | c = 0; | 229 | c = 0; |
| 222 | 230 | ||
| 223 | for (j=0; j<cnt; j++) { | 231 | for (j=0; j<cnt; j++) { |
| 224 | rdev = conf->devlist[j]; | 232 | rdev = conf->devlist[j]; |
| 225 | printk(KERN_INFO "raid0: checking %s ...", | 233 | printk(KERN_INFO "md/raid0:%s: checking %s ...", |
| 226 | bdevname(rdev->bdev, b)); | 234 | mdname(mddev), |
| 235 | bdevname(rdev->bdev, b)); | ||
| 227 | if (rdev->sectors <= zone->dev_start) { | 236 | if (rdev->sectors <= zone->dev_start) { |
| 228 | printk(KERN_INFO " nope.\n"); | 237 | printk(KERN_CONT " nope.\n"); |
| 229 | continue; | 238 | continue; |
| 230 | } | 239 | } |
| 231 | printk(KERN_INFO " contained as device %d\n", c); | 240 | printk(KERN_CONT " contained as device %d\n", c); |
| 232 | dev[c] = rdev; | 241 | dev[c] = rdev; |
| 233 | c++; | 242 | c++; |
| 234 | if (!smallest || rdev->sectors < smallest->sectors) { | 243 | if (!smallest || rdev->sectors < smallest->sectors) { |
| 235 | smallest = rdev; | 244 | smallest = rdev; |
| 236 | printk(KERN_INFO " (%llu) is smallest!.\n", | 245 | printk(KERN_INFO "md/raid0:%s: (%llu) is smallest!.\n", |
| 237 | (unsigned long long)rdev->sectors); | 246 | mdname(mddev), |
| 247 | (unsigned long long)rdev->sectors); | ||
| 238 | } | 248 | } |
| 239 | } | 249 | } |
| 240 | 250 | ||
| 241 | zone->nb_dev = c; | 251 | zone->nb_dev = c; |
| 242 | sectors = (smallest->sectors - zone->dev_start) * c; | 252 | sectors = (smallest->sectors - zone->dev_start) * c; |
| 243 | printk(KERN_INFO "raid0: zone->nb_dev: %d, sectors: %llu\n", | 253 | printk(KERN_INFO "md/raid0:%s: zone->nb_dev: %d, sectors: %llu\n", |
| 244 | zone->nb_dev, (unsigned long long)sectors); | 254 | mdname(mddev), |
| 255 | zone->nb_dev, (unsigned long long)sectors); | ||
| 245 | 256 | ||
| 246 | curr_zone_end += sectors; | 257 | curr_zone_end += sectors; |
| 247 | zone->zone_end = curr_zone_end; | 258 | zone->zone_end = curr_zone_end; |
| 248 | 259 | ||
| 249 | printk(KERN_INFO "raid0: current zone start: %llu\n", | 260 | printk(KERN_INFO "md/raid0:%s: current zone start: %llu\n", |
| 250 | (unsigned long long)smallest->sectors); | 261 | mdname(mddev), |
| 262 | (unsigned long long)smallest->sectors); | ||
| 251 | } | 263 | } |
| 252 | mddev->queue->unplug_fn = raid0_unplug; | 264 | mddev->queue->unplug_fn = raid0_unplug; |
| 253 | mddev->queue->backing_dev_info.congested_fn = raid0_congested; | 265 | mddev->queue->backing_dev_info.congested_fn = raid0_congested; |
| @@ -258,7 +270,7 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf) | |||
| 258 | * chunk size is a multiple of that sector size | 270 | * chunk size is a multiple of that sector size |
| 259 | */ | 271 | */ |
| 260 | if ((mddev->chunk_sectors << 9) % queue_logical_block_size(mddev->queue)) { | 272 | if ((mddev->chunk_sectors << 9) % queue_logical_block_size(mddev->queue)) { |
| 261 | printk(KERN_ERR "%s chunk_size of %d not valid\n", | 273 | printk(KERN_ERR "md/raid0:%s: chunk_size of %d not valid\n", |
| 262 | mdname(mddev), | 274 | mdname(mddev), |
| 263 | mddev->chunk_sectors << 9); | 275 | mddev->chunk_sectors << 9); |
| 264 | goto abort; | 276 | goto abort; |
| @@ -268,7 +280,7 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf) | |||
| 268 | blk_queue_io_opt(mddev->queue, | 280 | blk_queue_io_opt(mddev->queue, |
| 269 | (mddev->chunk_sectors << 9) * mddev->raid_disks); | 281 | (mddev->chunk_sectors << 9) * mddev->raid_disks); |
| 270 | 282 | ||
| 271 | printk(KERN_INFO "raid0: done.\n"); | 283 | printk(KERN_INFO "md/raid0:%s: done.\n", mdname(mddev)); |
| 272 | *private_conf = conf; | 284 | *private_conf = conf; |
| 273 | 285 | ||
| 274 | return 0; | 286 | return 0; |
| @@ -331,7 +343,8 @@ static int raid0_run(mddev_t *mddev) | |||
| 331 | int ret; | 343 | int ret; |
| 332 | 344 | ||
| 333 | if (mddev->chunk_sectors == 0) { | 345 | if (mddev->chunk_sectors == 0) { |
| 334 | printk(KERN_ERR "md/raid0: chunk size must be set.\n"); | 346 | printk(KERN_ERR "md/raid0:%s: chunk size must be set.\n", |
| 347 | mdname(mddev)); | ||
| 335 | return -EINVAL; | 348 | return -EINVAL; |
| 336 | } | 349 | } |
| 337 | if (md_check_no_bitmap(mddev)) | 350 | if (md_check_no_bitmap(mddev)) |
| @@ -357,8 +370,9 @@ static int raid0_run(mddev_t *mddev) | |||
| 357 | /* calculate array device size */ | 370 | /* calculate array device size */ |
| 358 | md_set_array_sectors(mddev, raid0_size(mddev, 0, 0)); | 371 | md_set_array_sectors(mddev, raid0_size(mddev, 0, 0)); |
| 359 | 372 | ||
| 360 | printk(KERN_INFO "raid0 : md_size is %llu sectors.\n", | 373 | printk(KERN_INFO "md/raid0:%s: md_size is %llu sectors.\n", |
| 361 | (unsigned long long)mddev->array_sectors); | 374 | mdname(mddev), |
| 375 | (unsigned long long)mddev->array_sectors); | ||
| 362 | /* calculate the max read-ahead size. | 376 | /* calculate the max read-ahead size. |
| 363 | * For read-ahead of large files to be effective, we need to | 377 | * For read-ahead of large files to be effective, we need to |
| 364 | * readahead at least twice a whole stripe. i.e. number of devices | 378 | * readahead at least twice a whole stripe. i.e. number of devices |
| @@ -516,9 +530,10 @@ static int raid0_make_request(mddev_t *mddev, struct bio *bio) | |||
| 516 | return 1; | 530 | return 1; |
| 517 | 531 | ||
| 518 | bad_map: | 532 | bad_map: |
| 519 | printk("raid0_make_request bug: can't convert block across chunks" | 533 | printk("md/raid0:%s: make_request bug: can't convert block across chunks" |
| 520 | " or bigger than %dk %llu %d\n", chunk_sects / 2, | 534 | " or bigger than %dk %llu %d\n", |
| 521 | (unsigned long long)bio->bi_sector, bio->bi_size >> 10); | 535 | mdname(mddev), chunk_sects / 2, |
| 536 | (unsigned long long)bio->bi_sector, bio->bi_size >> 10); | ||
| 522 | 537 | ||
| 523 | bio_io_error(bio); | 538 | bio_io_error(bio); |
| 524 | return 0; | 539 | return 0; |
| @@ -563,7 +578,8 @@ static void *raid0_takeover_raid5(mddev_t *mddev) | |||
| 563 | raid0_conf_t *priv_conf; | 578 | raid0_conf_t *priv_conf; |
| 564 | 579 | ||
| 565 | if (mddev->degraded != 1) { | 580 | if (mddev->degraded != 1) { |
| 566 | printk(KERN_ERR "md: raid5 must be degraded! Degraded disks: %d\n", | 581 | printk(KERN_ERR "md/raid0:%s: raid5 must be degraded! Degraded disks: %d\n", |
| 582 | mdname(mddev), | ||
| 567 | mddev->degraded); | 583 | mddev->degraded); |
| 568 | return ERR_PTR(-EINVAL); | 584 | return ERR_PTR(-EINVAL); |
| 569 | } | 585 | } |
| @@ -571,7 +587,8 @@ static void *raid0_takeover_raid5(mddev_t *mddev) | |||
| 571 | list_for_each_entry(rdev, &mddev->disks, same_set) { | 587 | list_for_each_entry(rdev, &mddev->disks, same_set) { |
| 572 | /* check slot number for a disk */ | 588 | /* check slot number for a disk */ |
| 573 | if (rdev->raid_disk == mddev->raid_disks-1) { | 589 | if (rdev->raid_disk == mddev->raid_disks-1) { |
| 574 | printk(KERN_ERR "md: raid5 must have missing parity disk!\n"); | 590 | printk(KERN_ERR "md/raid0:%s: raid5 must have missing parity disk!\n", |
| 591 | mdname(mddev)); | ||
| 575 | return ERR_PTR(-EINVAL); | 592 | return ERR_PTR(-EINVAL); |
| 576 | } | 593 | } |
| 577 | } | 594 | } |
| @@ -599,16 +616,19 @@ static void *raid0_takeover_raid10(mddev_t *mddev) | |||
| 599 | * - all mirrors must be already degraded | 616 | * - all mirrors must be already degraded |
| 600 | */ | 617 | */ |
| 601 | if (mddev->layout != ((1 << 8) + 2)) { | 618 | if (mddev->layout != ((1 << 8) + 2)) { |
| 602 | printk(KERN_ERR "md: Raid0 cannot takover layout: %x\n", | 619 | printk(KERN_ERR "md/raid0:%s:: Raid0 cannot takover layout: 0x%x\n", |
| 620 | mdname(mddev), | ||
| 603 | mddev->layout); | 621 | mddev->layout); |
| 604 | return ERR_PTR(-EINVAL); | 622 | return ERR_PTR(-EINVAL); |
| 605 | } | 623 | } |
| 606 | if (mddev->raid_disks & 1) { | 624 | if (mddev->raid_disks & 1) { |
| 607 | printk(KERN_ERR "md: Raid0 cannot takover Raid10 with odd disk number.\n"); | 625 | printk(KERN_ERR "md/raid0:%s: Raid0 cannot takover Raid10 with odd disk number.\n", |
| 626 | mdname(mddev)); | ||
| 608 | return ERR_PTR(-EINVAL); | 627 | return ERR_PTR(-EINVAL); |
| 609 | } | 628 | } |
| 610 | if (mddev->degraded != (mddev->raid_disks>>1)) { | 629 | if (mddev->degraded != (mddev->raid_disks>>1)) { |
| 611 | printk(KERN_ERR "md: All mirrors must be already degraded!\n"); | 630 | printk(KERN_ERR "md/raid0:%s: All mirrors must be already degraded!\n", |
| 631 | mdname(mddev)); | ||
| 612 | return ERR_PTR(-EINVAL); | 632 | return ERR_PTR(-EINVAL); |
| 613 | } | 633 | } |
| 614 | 634 | ||
| @@ -636,8 +656,8 @@ static void *raid0_takeover(mddev_t *mddev) | |||
| 636 | if (mddev->layout == ALGORITHM_PARITY_N) | 656 | if (mddev->layout == ALGORITHM_PARITY_N) |
| 637 | return raid0_takeover_raid5(mddev); | 657 | return raid0_takeover_raid5(mddev); |
| 638 | 658 | ||
| 639 | printk(KERN_ERR "md: Raid can only takeover Raid5 with layout: %d\n", | 659 | printk(KERN_ERR "md/raid0:%s: Raid can only takeover Raid5 with layout: %d\n", |
| 640 | ALGORITHM_PARITY_N); | 660 | mdname(mddev), ALGORITHM_PARITY_N); |
| 641 | } | 661 | } |
| 642 | 662 | ||
| 643 | if (mddev->level == 10) | 663 | if (mddev->level == 10) |
