* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/blkdev.h>
#include <linux/seq_file.h>
*/
char b[BDEVNAME_SIZE];
if (printk_ratelimit())
- printk(KERN_ERR "raid10: %s: rescheduling sector %llu\n",
+ printk(KERN_ERR "md/raid10:%s: %s: rescheduling sector %llu\n",
+ mdname(conf->mddev),
bdevname(conf->mirrors[dev].rdev->bdev,b), (unsigned long long)r10_bio->sector);
reschedule_retry(r10_bio);
}
*/
static int read_balance(conf_t *conf, r10bio_t *r10_bio)
{
- const unsigned long this_sector = r10_bio->sector;
+ const sector_t this_sector = r10_bio->sector;
int disk, slot, nslot;
const int sectors = r10_bio->sectors;
sector_t new_distance, current_distance;
spin_unlock_irq(&conf->resync_lock);
}
-static int make_request(struct request_queue *q, struct bio * bio)
+static int make_request(mddev_t *mddev, struct bio * bio)
{
- mddev_t *mddev = q->queuedata;
conf_t *conf = mddev->private;
mirror_info_t *mirror;
r10bio_t *r10_bio;
struct bio *read_bio;
- int cpu;
int i;
int chunk_sects = conf->chunk_mask + 1;
const int rw = bio_data_dir(bio);
*/
bp = bio_split(bio,
chunk_sects - (bio->bi_sector & (chunk_sects - 1)) );
- if (make_request(q, &bp->bio1))
+ if (make_request(mddev, &bp->bio1))
generic_make_request(&bp->bio1);
- if (make_request(q, &bp->bio2))
+ if (make_request(mddev, &bp->bio2))
generic_make_request(&bp->bio2);
bio_pair_release(bp);
return 0;
bad_map:
- printk("raid10_make_request bug: can't convert block across chunks"
- " or bigger than %dk %llu %d\n", chunk_sects/2,
+ printk("md/raid10:%s: make_request bug: can't convert block across chunks"
+ " or bigger than %dk %llu %d\n", mdname(mddev), chunk_sects/2,
(unsigned long long)bio->bi_sector, bio->bi_size >> 10);
bio_io_error(bio);
*/
wait_barrier(conf);
- cpu = part_stat_lock();
- part_stat_inc(cpu, &mddev->gendisk->part0, ios[rw]);
- part_stat_add(cpu, &mddev->gendisk->part0, sectors[rw],
- bio_sectors(bio));
- part_stat_unlock();
-
r10_bio = mempool_alloc(conf->r10bio_pool, GFP_NOIO);
r10_bio->master_bio = bio;
}
set_bit(Faulty, &rdev->flags);
set_bit(MD_CHANGE_DEVS, &mddev->flags);
- printk(KERN_ALERT "raid10: Disk failure on %s, disabling device.\n"
- "raid10: Operation continuing on %d devices.\n",
- bdevname(rdev->bdev,b), conf->raid_disks - mddev->degraded);
+ printk(KERN_ALERT "md/raid10:%s: Disk failure on %s, disabling device.\n"
+ KERN_ALERT "md/raid10:%s: Operation continuing on %d devices.\n",
+ mdname(mddev), bdevname(rdev->bdev, b),
+ mdname(mddev), conf->raid_disks - mddev->degraded);
}
static void print_conf(conf_t *conf)
int i;
mirror_info_t *tmp;
- printk("RAID10 conf printout:\n");
+ printk(KERN_DEBUG "RAID10 conf printout:\n");
if (!conf) {
- printk("(!conf)\n");
+ printk(KERN_DEBUG "(!conf)\n");
return;
}
- printk(" --- wd:%d rd:%d\n", conf->raid_disks - conf->mddev->degraded,
+ printk(KERN_DEBUG " --- wd:%d rd:%d\n", conf->raid_disks - conf->mddev->degraded,
conf->raid_disks);
for (i = 0; i < conf->raid_disks; i++) {
char b[BDEVNAME_SIZE];
tmp = conf->mirrors + i;
if (tmp->rdev)
- printk(" disk %d, wo:%d, o:%d, dev:%s\n",
+ printk(KERN_DEBUG " disk %d, wo:%d, o:%d, dev:%s\n",
i, !test_bit(In_sync, &tmp->rdev->flags),
!test_bit(Faulty, &tmp->rdev->flags),
bdevname(tmp->rdev->bdev,b));
int sectors = r10_bio->sectors;
mdk_rdev_t*rdev;
int max_read_errors = atomic_read(&mddev->max_corr_read_errors);
+ int d = r10_bio->devs[r10_bio->read_slot].devnum;
rcu_read_lock();
- {
- int d = r10_bio->devs[r10_bio->read_slot].devnum;
+ rdev = rcu_dereference(conf->mirrors[d].rdev);
+ if (rdev) { /* If rdev is not NULL */
char b[BDEVNAME_SIZE];
int cur_read_error_count = 0;
- rdev = rcu_dereference(conf->mirrors[d].rdev);
bdevname(rdev->bdev, b);
if (test_bit(Faulty, &rdev->flags)) {
if (cur_read_error_count > max_read_errors) {
rcu_read_unlock();
printk(KERN_NOTICE
- "raid10: %s: Raid device exceeded "
+ "md/raid10:%s: %s: Raid device exceeded "
"read_error threshold "
"[cur %d:max %d]\n",
+ mdname(mddev),
b, cur_read_error_count, max_read_errors);
printk(KERN_NOTICE
- "raid10: %s: Failing raid "
- "device\n", b);
+ "md/raid10:%s: %s: Failing raid "
+ "device\n", mdname(mddev), b);
md_error(mddev, conf->mirrors[d].rdev);
return;
}
rcu_read_lock();
do {
- int d = r10_bio->devs[sl].devnum;
+ d = r10_bio->devs[sl].devnum;
rdev = rcu_dereference(conf->mirrors[d].rdev);
if (rdev &&
test_bit(In_sync, &rdev->flags)) {
rcu_read_lock();
while (sl != r10_bio->read_slot) {
char b[BDEVNAME_SIZE];
- int d;
+
if (sl==0)
sl = conf->copies;
sl--;
== 0) {
/* Well, this device is dead */
printk(KERN_NOTICE
- "raid10:%s: read correction "
+ "md/raid10:%s: read correction "
"write failed"
" (%d sectors at %llu on %s)\n",
mdname(mddev), s,
(unsigned long long)(sect+
rdev->data_offset),
bdevname(rdev->bdev, b));
- printk(KERN_NOTICE "raid10:%s: failing "
+ printk(KERN_NOTICE "md/raid10:%s: %s: failing "
"drive\n",
+ mdname(mddev),
bdevname(rdev->bdev, b));
md_error(mddev, rdev);
}
}
sl = start;
while (sl != r10_bio->read_slot) {
- int d;
+
if (sl==0)
sl = conf->copies;
sl--;
READ) == 0) {
/* Well, this device is dead */
printk(KERN_NOTICE
- "raid10:%s: unable to read back "
+ "md/raid10:%s: unable to read back "
"corrected sectors"
" (%d sectors at %llu on %s)\n",
mdname(mddev), s,
(unsigned long long)(sect+
rdev->data_offset),
bdevname(rdev->bdev, b));
- printk(KERN_NOTICE "raid10:%s: failing drive\n",
+ printk(KERN_NOTICE "md/raid10:%s: %s: failing drive\n",
+ mdname(mddev),
bdevname(rdev->bdev, b));
md_error(mddev, rdev);
} else {
printk(KERN_INFO
- "raid10:%s: read error corrected"
+ "md/raid10:%s: read error corrected"
" (%d sectors at %llu on %s)\n",
mdname(mddev), s,
(unsigned long long)(sect+
mddev->ro ? IO_BLOCKED : NULL;
mirror = read_balance(conf, r10_bio);
if (mirror == -1) {
- printk(KERN_ALERT "raid10: %s: unrecoverable I/O"
+ printk(KERN_ALERT "md/raid10:%s: %s: unrecoverable I/O"
" read error for block %llu\n",
+ mdname(mddev),
bdevname(bio->bi_bdev,b),
(unsigned long long)r10_bio->sector);
raid_end_bio_io(r10_bio);
bio_put(bio);
rdev = conf->mirrors[mirror].rdev;
if (printk_ratelimit())
- printk(KERN_ERR "raid10: %s: redirecting sector %llu to"
+ printk(KERN_ERR "md/raid10:%s: %s: redirecting sector %llu to"
" another mirror\n",
+ mdname(mddev),
bdevname(rdev->bdev,b),
(unsigned long long)r10_bio->sector);
bio = bio_clone(r10_bio->master_bio, GFP_NOIO);
r10_bio = rb2;
if (!test_and_set_bit(MD_RECOVERY_INTR,
&mddev->recovery))
- printk(KERN_INFO "raid10: %s: insufficient working devices for recovery.\n",
+ printk(KERN_INFO "md/raid10:%s: insufficient "
+ "working devices for recovery.\n",
mdname(mddev));
break;
}
sector_t stride, size;
int err = -EINVAL;
- if (mddev->chunk_sectors < (PAGE_SIZE >> 9) ||
- !is_power_of_2(mddev->chunk_sectors)) {
- printk(KERN_ERR "md/raid10: chunk size must be "
- "at least PAGE_SIZE(%ld) and be a power of 2.\n", PAGE_SIZE);
+ if (mddev->new_chunk_sectors < (PAGE_SIZE >> 9) ||
+ !is_power_of_2(mddev->new_chunk_sectors)) {
+ printk(KERN_ERR "md/raid10:%s: chunk size must be "
+ "at least PAGE_SIZE(%ld) and be a power of 2.\n",
+ mdname(mddev), PAGE_SIZE);
goto out;
}
- nc = mddev->layout & 255;
- fc = (mddev->layout >> 8) & 255;
- fo = mddev->layout & (1<<16);
+ nc = mddev->new_layout & 255;
+ fc = (mddev->new_layout >> 8) & 255;
+ fo = mddev->new_layout & (1<<16);
if ((nc*fc) <2 || (nc*fc) > mddev->raid_disks ||
- (mddev->layout >> 17)) {
- printk(KERN_ERR "raid10: %s: unsupported raid10 layout: 0x%8x\n",
- mdname(mddev), mddev->layout);
+ (mddev->new_layout >> 17)) {
+ printk(KERN_ERR "md/raid10:%s: unsupported raid10 layout: 0x%8x\n",
+ mdname(mddev), mddev->new_layout);
goto out;
}
if (!conf->thread)
goto out;
- conf->scale_disks = 0;
conf->mddev = mddev;
return conf;
out:
- printk(KERN_ERR "raid10: couldn't allocate memory for %s\n",
+ printk(KERN_ERR "md/raid10:%s: couldn't allocate memory.\n",
mdname(mddev));
if (conf) {
if (conf->r10bio_pool)
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;
}
/* need to check that every block has at least one working mirror */
if (!enough(conf)) {
- printk(KERN_ERR "raid10: not enough operational mirrors for %s\n",
+ printk(KERN_ERR "md/raid10:%s: not enough operational mirrors.\n",
mdname(mddev));
goto out_free_conf;
}
}
if (mddev->recovery_cp != MaxSector)
- printk(KERN_NOTICE "raid10: %s is not clean"
+ printk(KERN_NOTICE "md/raid10:%s: not clean"
" -- starting background reconstruction\n",
mdname(mddev));
printk(KERN_INFO
- "raid10: raid set %s active with %d out of %d devices\n",
+ "md/raid10:%s: active with %d out of %d devices\n",
mdname(mddev), conf->raid_disks - mddev->degraded,
conf->raid_disks);
/*
conf_t *conf;
if (mddev->degraded > 0) {
- printk(KERN_ERR "error: degraded raid0!\n");
+ printk(KERN_ERR "md/raid10:%s: Error: degraded raid0!\n",
+ mdname(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 */
mddev->new_layout = (1<<8) + 2;
mddev->new_chunk_sectors = mddev->chunk_sectors;
mddev->delta_disks = mddev->raid_disks;
- mddev->degraded = mddev->raid_disks;
mddev->raid_disks *= 2;
/* make sure it will be not marked as dirty */
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;
}
/* for raid0 takeover only one zone is supported */
raid0_priv = mddev->private;
if (raid0_priv->nr_strip_zones > 1) {
- printk(KERN_ERR "md: cannot takeover raid 0 with more than one zone.\n");
+ printk(KERN_ERR "md/raid10:%s: cannot takeover raid 0"
+ " with more than one zone.\n",
+ mdname(mddev));
return ERR_PTR(-EINVAL);
}
return raid10_takeover_raid0(mddev);
git.samba.org / sfrench / cifs-2.6.git / blobdiff