diff options
Diffstat (limited to 'drivers/md/raid1.c')
| -rw-r--r-- | drivers/md/raid1.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index d3a64a04a6d8..51d9645ed09c 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -893,7 +893,6 @@ static int end_sync_read(struct bio *bio, unsigned int bytes_done, int error) if (!uptodate) { md_error(r1_bio->mddev, conf->mirrors[r1_bio->read_disk].rdev); - set_bit(R1BIO_Degraded, &r1_bio->state); } else set_bit(R1BIO_Uptodate, &r1_bio->state); rdev_dec_pending(conf->mirrors[r1_bio->read_disk].rdev, conf->mddev); @@ -918,10 +917,9 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error) mirror = i; break; } - if (!uptodate) { + if (!uptodate) md_error(mddev, conf->mirrors[mirror].rdev); - set_bit(R1BIO_Degraded, &r1_bio->state); - } + update_head_pos(mirror, r1_bio); if (atomic_dec_and_test(&r1_bio->remaining)) { @@ -1109,6 +1107,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i int i; int write_targets = 0; int sync_blocks; + int still_degraded = 0; if (!conf->r1buf_pool) { @@ -1137,7 +1136,10 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i return 0; } - if (!bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks, mddev->degraded) && + /* before building a request, check if we can skip these blocks.. + * This call the bitmap_start_sync doesn't actually record anything + */ + if (!bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks, 1) && !conf->fullsync) { /* We can skip this block, and probably several more */ *skipped = 1; @@ -1203,24 +1205,23 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i if (i == disk) { bio->bi_rw = READ; bio->bi_end_io = end_sync_read; - } else if (conf->mirrors[i].rdev && - !conf->mirrors[i].rdev->faulty && - (!conf->mirrors[i].rdev->in_sync || - sector_nr + RESYNC_SECTORS > mddev->recovery_cp)) { + } else if (conf->mirrors[i].rdev == NULL || + conf->mirrors[i].rdev->faulty) { + still_degraded = 1; + continue; + } else if (!conf->mirrors[i].rdev->in_sync || + sector_nr + RESYNC_SECTORS > mddev->recovery_cp) { bio->bi_rw = WRITE; bio->bi_end_io = end_sync_write; write_targets ++; } else + /* no need to read or write here */ continue; bio->bi_sector = sector_nr + conf->mirrors[i].rdev->data_offset; bio->bi_bdev = conf->mirrors[i].rdev->bdev; bio->bi_private = r1_bio; } - if (write_targets + 1 < conf->raid_disks) - /* array degraded, can't clear bitmap */ - set_bit(R1BIO_Degraded, &r1_bio->state); - if (write_targets == 0) { /* There is nowhere to write, so all non-sync * drives must be failed - so we are finished @@ -1243,7 +1244,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i break; if (sync_blocks == 0) { if (!bitmap_start_sync(mddev->bitmap, sector_nr, - &sync_blocks, mddev->degraded) && + &sync_blocks, still_degraded) && !conf->fullsync) break; if (sync_blocks < (PAGE_SIZE>>9)) |