}
}
-static inline void free_r1bio(r1bio_t *r1_bio)
+static void free_r1bio(r1bio_t *r1_bio)
{
conf_t *conf = mddev_to_conf(r1_bio->mddev);
mempool_free(r1_bio, conf->r1bio_pool);
}
-static inline void put_buf(r1bio_t *r1_bio)
+static void put_buf(r1bio_t *r1_bio)
{
conf_t *conf = mddev_to_conf(r1_bio->mddev);
int i;
r1bio_t * r1_bio = (r1bio_t *)(bio->bi_private);
int mirror, behind = test_bit(R1BIO_BehindIO, &r1_bio->state);
conf_t *conf = mddev_to_conf(r1_bio->mddev);
+ struct bio *to_put = NULL;
if (bio->bi_size)
return 1;
if (r1_bio->bios[mirror] == bio)
break;
- if (error == -ENOTSUPP && test_bit(R1BIO_Barrier, &r1_bio->state)) {
+ if (error == -EOPNOTSUPP && test_bit(R1BIO_Barrier, &r1_bio->state)) {
set_bit(BarriersNotsupp, &conf->mirrors[mirror].rdev->flags);
set_bit(R1BIO_BarrierRetry, &r1_bio->state);
r1_bio->mddev->barriers_work = 0;
+ /* Don't rdev_dec_pending in this branch - keep it for the retry */
} else {
/*
* this branch is our 'one mirror IO has finished' event handler:
*/
r1_bio->bios[mirror] = NULL;
+ to_put = bio;
if (!uptodate) {
md_error(r1_bio->mddev, conf->mirrors[mirror].rdev);
/* an I/O failed, we can't clear the bitmap */
}
}
}
+ rdev_dec_pending(conf->mirrors[mirror].rdev, conf->mddev);
}
/*
*
if (atomic_dec_and_test(&r1_bio->remaining)) {
if (test_bit(R1BIO_BarrierRetry, &r1_bio->state)) {
reschedule_retry(r1_bio);
- /* Don't dec_pending yet, we want to hold
- * the reference over the retry
- */
- return 0;
+ goto out;
}
+ /* it really is the end of this request */
if (test_bit(R1BIO_BehindIO, &r1_bio->state)) {
/* free extra copy of the data pages */
int i = bio->bi_vcnt;
md_write_end(r1_bio->mddev);
raid_end_bio_io(r1_bio);
}
+ out:
+ if (to_put)
+ bio_put(to_put);
- if (r1_bio->bios[mirror]==NULL)
- bio_put(bio);
-
- rdev_dec_pending(conf->mirrors[mirror].rdev, conf->mddev);
return 0;
}
const int rw = bio_data_dir(bio);
int do_barriers;
- if (unlikely(!mddev->barriers_work && bio_barrier(bio))) {
- bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
- return 0;
- }
-
/*
* Register the new request and wait if the reconstruction
* thread has put up a bar for new requests.
* Continue immediately if no resync is active currently.
+ * We test barriers_work *after* md_write_start as md_write_start
+ * may cause the first superblock write, and that will check out
+ * if barriers work.
*/
+
md_write_start(mddev, bio); /* wait on superblock update early */
+ if (unlikely(!mddev->barriers_work && bio_barrier(bio))) {
+ if (rw == WRITE)
+ md_write_end(mddev);
+ bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
+ return 0;
+ }
+
wait_barrier(conf);
disk_stat_inc(mddev->gendisk, ios[rw]);
atomic_set(&r1_bio->remaining, 0);
atomic_set(&r1_bio->behind_remaining, 0);
- do_barriers = bio->bi_rw & BIO_RW_BARRIER;
+ do_barriers = bio_barrier(bio);
if (do_barriers)
set_bit(R1BIO_Barrier, &r1_bio->state);
mirror = i;
break;
}
- if (!uptodate)
+ if (!uptodate) {
+ int sync_blocks = 0;
+ sector_t s = r1_bio->sector;
+ long sectors_to_go = r1_bio->sectors;
+ /* make sure these bits doesn't get cleared. */
+ do {
+ bitmap_end_sync(mddev->bitmap, r1_bio->sector,
+ &sync_blocks, 1);
+ s += sync_blocks;
+ sectors_to_go -= sync_blocks;
+ } while (sectors_to_go > 0);
md_error(mddev, conf->mirrors[mirror].rdev);
+ }
update_head_pos(mirror, r1_bio);
if (r1_bio->bios[d]->bi_end_io != end_sync_read)
continue;
rdev = conf->mirrors[d].rdev;
+ atomic_add(s, &rdev->corrected_errors);
if (sync_page_io(rdev->bdev,
sect + rdev->data_offset,
s<<9,
unplug = 1;
} else if (test_bit(R1BIO_BarrierRetry, &r1_bio->state)) {
/* some requests in the r1bio were BIO_RW_BARRIER
- * requests which failed with -ENOTSUPP. Hohumm..
+ * requests which failed with -EOPNOTSUPP. Hohumm..
* Better resubmit without the barrier.
* We know which devices to resubmit for, because
* all others have had their bios[] entry cleared.
+ * We already have a nr_pending reference on these rdevs.
*/
int i;
clear_bit(R1BIO_BarrierRetry, &r1_bio->state);
clear_bit(R1BIO_Barrier, &r1_bio->state);
for (i=0; i < conf->raid_disks; i++)
+ if (r1_bio->bios[i])
+ atomic_inc(&r1_bio->remaining);
+ for (i=0; i < conf->raid_disks; i++)
if (r1_bio->bios[i]) {
struct bio_vec *bvec;
int j;
d = conf->raid_disks;
d--;
rdev = conf->mirrors[d].rdev;
+ atomic_add(s, &rdev->corrected_errors);
if (rdev &&
test_bit(In_sync, &rdev->flags)) {
if (sync_page_io(rdev->bdev,
int buffs;
buffs = RESYNC_WINDOW / RESYNC_BLOCK_SIZE;
- if (conf->r1buf_pool)
- BUG();
+ BUG_ON(conf->r1buf_pool);
conf->r1buf_pool = mempool_create(buffs, r1buf_pool_alloc, r1buf_pool_free,
conf->poolinfo);
if (!conf->r1buf_pool)
!conf->fullsync &&
!test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
break;
- if (sync_blocks < (PAGE_SIZE>>9))
- BUG();
+ BUG_ON(sync_blocks < (PAGE_SIZE>>9));
if (len > (sync_blocks<<9))
len = sync_blocks<<9;
}
mdname(mddev), mddev->level);
goto out;
}
+ if (mddev->reshape_position != MaxSector) {
+ printk("raid1: %s: reshape_position set but not supported\n",
+ mdname(mddev));
+ goto out;
+ }
/*
* copy the already verified devices into our private RAID1
* bookkeeping area. [whatever we allocate in run(),
return 0;
}
-static int raid1_reshape(mddev_t *mddev, int raid_disks)
+static int raid1_reshape(mddev_t *mddev)
{
/* We need to:
* 1/ resize the r1bio_pool
struct pool_info *newpoolinfo;
mirror_info_t *newmirrors;
conf_t *conf = mddev_to_conf(mddev);
- int cnt;
+ int cnt, raid_disks;
int d, d2;
+ /* Cannot change chunk_size, layout, or level */
+ if (mddev->chunk_size != mddev->new_chunk ||
+ mddev->layout != mddev->new_layout ||
+ mddev->level != mddev->new_level) {
+ mddev->new_chunk = mddev->chunk_size;
+ mddev->new_layout = mddev->layout;
+ mddev->new_level = mddev->level;
+ return -EINVAL;
+ }
+
+ raid_disks = mddev->raid_disks + mddev->delta_disks;
+
if (raid_disks < conf->raid_disks) {
cnt=0;
for (d= 0; d < conf->raid_disks; d++)
mddev->degraded += (raid_disks - conf->raid_disks);
conf->raid_disks = mddev->raid_disks = raid_disks;
+ mddev->delta_disks = 0;
conf->last_used = 0; /* just make sure it is in-range */
lower_barrier(conf);
.spare_active = raid1_spare_active,
.sync_request = sync_request,
.resize = raid1_resize,
- .reshape = raid1_reshape,
+ .check_reshape = raid1_reshape,
.quiesce = raid1_quiesce,
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff