Lines Matching +full:update +full:- +full:fc +full:- +full:fixup
1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 2000-2004 Neil Brown
7 * RAID-10 support for md.
24 #include "md-bitmap.h"
78 do { if ((md)->queue) blk_add_trace_msg((md)->queue, "raid10 " fmt, ##args); } while (0)
80 #include "raid1-10.c"
85 write_sequnlock_irq(&(conf)->resync_lock); \
88 #define cmd_after(conf) write_seqlock_irq(&(conf)->resync_lock)
91 wait_event_cmd((conf)->wait_barrier, cond, cmd_before(conf, cmd), \
98 * for resync bio, r10bio pointer can be retrieved from the per-bio
103 return get_resync_pages(bio)->raid_bio; in get_resync_r10bio()
109 int size = offsetof(struct r10bio, devs[conf->geo.raid_disks]); in r10bio_pool_alloc()
144 if (test_bit(MD_RECOVERY_SYNC, &conf->mddev->recovery) || in r10buf_pool_alloc()
145 test_bit(MD_RECOVERY_RESHAPE, &conf->mddev->recovery)) in r10buf_pool_alloc()
146 nalloc = conf->copies; /* resync */ in r10buf_pool_alloc()
151 if (!conf->have_replacement) in r10buf_pool_alloc()
162 for (j = nalloc ; j-- ; ) { in r10buf_pool_alloc()
166 bio_init(bio, NULL, bio->bi_inline_vecs, RESYNC_PAGES, 0); in r10buf_pool_alloc()
167 r10_bio->devs[j].bio = bio; in r10buf_pool_alloc()
168 if (!conf->have_replacement) in r10buf_pool_alloc()
173 bio_init(bio, NULL, bio->bi_inline_vecs, RESYNC_PAGES, 0); in r10buf_pool_alloc()
174 r10_bio->devs[j].repl_bio = bio; in r10buf_pool_alloc()
181 struct bio *rbio = r10_bio->devs[j].repl_bio; in r10buf_pool_alloc()
188 bio = r10_bio->devs[j].bio; in r10buf_pool_alloc()
191 &conf->mddev->recovery)) { in r10buf_pool_alloc()
199 rp->raid_bio = r10_bio; in r10buf_pool_alloc()
200 bio->bi_private = rp; in r10buf_pool_alloc()
203 rbio->bi_private = rp_repl; in r10buf_pool_alloc()
210 while (--j >= 0) in r10buf_pool_alloc()
216 if (r10_bio->devs[j].bio) in r10buf_pool_alloc()
217 bio_uninit(r10_bio->devs[j].bio); in r10buf_pool_alloc()
218 kfree(r10_bio->devs[j].bio); in r10buf_pool_alloc()
219 if (r10_bio->devs[j].repl_bio) in r10buf_pool_alloc()
220 bio_uninit(r10_bio->devs[j].repl_bio); in r10buf_pool_alloc()
221 kfree(r10_bio->devs[j].repl_bio); in r10buf_pool_alloc()
236 for (j = conf->copies; j--; ) { in r10buf_pool_free()
237 struct bio *bio = r10bio->devs[j].bio; in r10buf_pool_free()
246 bio = r10bio->devs[j].repl_bio; in r10buf_pool_free()
263 for (i = 0; i < conf->geo.raid_disks; i++) { in put_all_bios()
264 struct bio **bio = & r10_bio->devs[i].bio; in put_all_bios()
268 bio = &r10_bio->devs[i].repl_bio; in put_all_bios()
269 if (r10_bio->read_slot < 0 && !BIO_SPECIAL(*bio)) in put_all_bios()
277 struct r10conf *conf = r10_bio->mddev->private; in free_r10bio()
280 mempool_free(r10_bio, &conf->r10bio_pool); in free_r10bio()
285 struct r10conf *conf = r10_bio->mddev->private; in put_buf()
287 mempool_free(r10_bio, &conf->r10buf_pool); in put_buf()
294 if (wq_has_sleeper(&conf->wait_barrier)) in wake_up_barrier()
295 wake_up(&conf->wait_barrier); in wake_up_barrier()
301 struct mddev *mddev = r10_bio->mddev; in reschedule_retry()
302 struct r10conf *conf = mddev->private; in reschedule_retry()
304 spin_lock_irqsave(&conf->device_lock, flags); in reschedule_retry()
305 list_add(&r10_bio->retry_list, &conf->retry_list); in reschedule_retry()
306 conf->nr_queued ++; in reschedule_retry()
307 spin_unlock_irqrestore(&conf->device_lock, flags); in reschedule_retry()
310 wake_up(&conf->wait_barrier); in reschedule_retry()
312 md_wakeup_thread(mddev->thread); in reschedule_retry()
322 struct bio *bio = r10_bio->master_bio; in raid_end_bio_io()
323 struct r10conf *conf = r10_bio->mddev->private; in raid_end_bio_io()
325 if (!test_bit(R10BIO_Uptodate, &r10_bio->state)) in raid_end_bio_io()
326 bio->bi_status = BLK_STS_IOERR; in raid_end_bio_io()
339 * Update disk head position estimator based on IRQ completion info.
343 struct r10conf *conf = r10_bio->mddev->private; in update_head_pos()
345 conf->mirrors[r10_bio->devs[slot].devnum].head_position = in update_head_pos()
346 r10_bio->devs[slot].addr + (r10_bio->sectors); in update_head_pos()
358 for (slot = 0; slot < conf->geo.raid_disks; slot++) { in find_bio_disk()
359 if (r10_bio->devs[slot].bio == bio) in find_bio_disk()
361 if (r10_bio->devs[slot].repl_bio == bio) { in find_bio_disk()
373 return r10_bio->devs[slot].devnum; in find_bio_disk()
378 int uptodate = !bio->bi_status; in raid10_end_read_request()
379 struct r10bio *r10_bio = bio->bi_private; in raid10_end_read_request()
382 struct r10conf *conf = r10_bio->mddev->private; in raid10_end_read_request()
384 slot = r10_bio->read_slot; in raid10_end_read_request()
385 rdev = r10_bio->devs[slot].rdev; in raid10_end_read_request()
398 * user-side. So if something waits for IO, then it will in raid10_end_read_request()
401 set_bit(R10BIO_Uptodate, &r10_bio->state); in raid10_end_read_request()
408 if (!_enough(conf, test_bit(R10BIO_Previous, &r10_bio->state), in raid10_end_read_request()
409 rdev->raid_disk)) in raid10_end_read_request()
414 rdev_dec_pending(rdev, conf->mddev); in raid10_end_read_request()
417 * oops, read error - keep the refcount on the rdev in raid10_end_read_request()
420 mdname(conf->mddev), in raid10_end_read_request()
421 rdev->bdev, in raid10_end_read_request()
422 (unsigned long long)r10_bio->sector); in raid10_end_read_request()
423 set_bit(R10BIO_ReadError, &r10_bio->state); in raid10_end_read_request()
430 md_write_end(r10_bio->mddev); in close_write()
435 if (atomic_dec_and_test(&r10_bio->remaining)) { in one_write_done()
436 if (test_bit(R10BIO_WriteError, &r10_bio->state)) in one_write_done()
440 if (test_bit(R10BIO_MadeGood, &r10_bio->state)) in one_write_done()
450 struct r10bio *r10_bio = bio->bi_private; in raid10_end_write_request()
453 struct r10conf *conf = r10_bio->mddev->private; in raid10_end_write_request()
459 discard_error = bio->bi_status && bio_op(bio) == REQ_OP_DISCARD; in raid10_end_write_request()
464 rdev = conf->mirrors[dev].replacement; in raid10_end_write_request()
468 rdev = conf->mirrors[dev].rdev; in raid10_end_write_request()
473 if (bio->bi_status && !discard_error) { in raid10_end_write_request()
478 md_error(rdev->mddev, rdev); in raid10_end_write_request()
480 set_bit(WriteErrorSeen, &rdev->flags); in raid10_end_write_request()
481 if (!test_and_set_bit(WantReplacement, &rdev->flags)) in raid10_end_write_request()
483 &rdev->mddev->recovery); in raid10_end_write_request()
486 if (test_bit(FailFast, &rdev->flags) && in raid10_end_write_request()
487 (bio->bi_opf & MD_FAILFAST)) { in raid10_end_write_request()
488 md_error(rdev->mddev, rdev); in raid10_end_write_request()
495 if (!test_bit(Faulty, &rdev->flags)) in raid10_end_write_request()
496 set_bit(R10BIO_WriteError, &r10_bio->state); in raid10_end_write_request()
499 r10_bio->devs[slot].bio = NULL; in raid10_end_write_request()
511 * user-side. So if something waits for IO, then it will in raid10_end_write_request()
522 * before rdev->recovery_offset, but for simplicity we don't in raid10_end_write_request()
525 if (test_bit(In_sync, &rdev->flags) && in raid10_end_write_request()
526 !test_bit(Faulty, &rdev->flags)) in raid10_end_write_request()
527 set_bit(R10BIO_Uptodate, &r10_bio->state); in raid10_end_write_request()
531 r10_bio->devs[slot].addr, in raid10_end_write_request()
532 r10_bio->sectors, in raid10_end_write_request()
536 r10_bio->devs[slot].repl_bio = IO_MADE_GOOD; in raid10_end_write_request()
538 r10_bio->devs[slot].bio = IO_MADE_GOOD; in raid10_end_write_request()
540 set_bit(R10BIO_MadeGood, &r10_bio->state); in raid10_end_write_request()
551 rdev_dec_pending(rdev, conf->mddev); in raid10_end_write_request()
591 last_far_set_start = (geo->raid_disks / geo->far_set_size) - 1; in __raid10_find_phys()
592 last_far_set_start *= geo->far_set_size; in __raid10_find_phys()
594 last_far_set_size = geo->far_set_size; in __raid10_find_phys()
595 last_far_set_size += (geo->raid_disks % geo->far_set_size); in __raid10_find_phys()
598 chunk = r10bio->sector >> geo->chunk_shift; in __raid10_find_phys()
599 sector = r10bio->sector & geo->chunk_mask; in __raid10_find_phys()
601 chunk *= geo->near_copies; in __raid10_find_phys()
603 dev = sector_div(stripe, geo->raid_disks); in __raid10_find_phys()
604 if (geo->far_offset) in __raid10_find_phys()
605 stripe *= geo->far_copies; in __raid10_find_phys()
607 sector += stripe << geo->chunk_shift; in __raid10_find_phys()
610 for (n = 0; n < geo->near_copies; n++) { in __raid10_find_phys()
614 r10bio->devs[slot].devnum = d; in __raid10_find_phys()
615 r10bio->devs[slot].addr = s; in __raid10_find_phys()
618 for (f = 1; f < geo->far_copies; f++) { in __raid10_find_phys()
619 set = d / geo->far_set_size; in __raid10_find_phys()
620 d += geo->near_copies; in __raid10_find_phys()
622 if ((geo->raid_disks % geo->far_set_size) && in __raid10_find_phys()
624 d -= last_far_set_start; in __raid10_find_phys()
628 d %= geo->far_set_size; in __raid10_find_phys()
629 d += geo->far_set_size * set; in __raid10_find_phys()
631 s += geo->stride; in __raid10_find_phys()
632 r10bio->devs[slot].devnum = d; in __raid10_find_phys()
633 r10bio->devs[slot].addr = s; in __raid10_find_phys()
637 if (dev >= geo->raid_disks) { in __raid10_find_phys()
639 sector += (geo->chunk_mask + 1); in __raid10_find_phys()
646 struct geom *geo = &conf->geo; in raid10_find_phys()
648 if (conf->reshape_progress != MaxSector && in raid10_find_phys()
649 ((r10bio->sector >= conf->reshape_progress) != in raid10_find_phys()
650 conf->mddev->reshape_backwards)) { in raid10_find_phys()
651 set_bit(R10BIO_Previous, &r10bio->state); in raid10_find_phys()
652 geo = &conf->prev; in raid10_find_phys()
654 clear_bit(R10BIO_Previous, &r10bio->state); in raid10_find_phys()
662 /* Never use conf->prev as this is only called during resync in raid10_find_virt()
665 struct geom *geo = &conf->geo; in raid10_find_virt()
666 int far_set_start = (dev / geo->far_set_size) * geo->far_set_size; in raid10_find_virt()
667 int far_set_size = geo->far_set_size; in raid10_find_virt()
670 if (geo->raid_disks % geo->far_set_size) { in raid10_find_virt()
671 last_far_set_start = (geo->raid_disks / geo->far_set_size) - 1; in raid10_find_virt()
672 last_far_set_start *= geo->far_set_size; in raid10_find_virt()
675 far_set_size = geo->far_set_size; in raid10_find_virt()
676 far_set_size += (geo->raid_disks % geo->far_set_size); in raid10_find_virt()
681 offset = sector & geo->chunk_mask; in raid10_find_virt()
682 if (geo->far_offset) { in raid10_find_virt()
683 int fc; in raid10_find_virt() local
684 chunk = sector >> geo->chunk_shift; in raid10_find_virt()
685 fc = sector_div(chunk, geo->far_copies); in raid10_find_virt()
686 dev -= fc * geo->near_copies; in raid10_find_virt()
690 while (sector >= geo->stride) { in raid10_find_virt()
691 sector -= geo->stride; in raid10_find_virt()
692 if (dev < (geo->near_copies + far_set_start)) in raid10_find_virt()
693 dev += far_set_size - geo->near_copies; in raid10_find_virt()
695 dev -= geo->near_copies; in raid10_find_virt()
697 chunk = sector >> geo->chunk_shift; in raid10_find_virt()
699 vchunk = chunk * geo->raid_disks + dev; in raid10_find_virt()
700 sector_div(vchunk, geo->near_copies); in raid10_find_virt()
701 return (vchunk << geo->chunk_shift) + offset; in raid10_find_virt()
706 * be done. There is a per-array 'next expected sequential IO' sector
707 * number - if this matches on the next IO then we use the last disk.
708 * There is also a per-disk 'last know head position' sector that is
710 * completion handlers update this position correctly. If there is no
727 const sector_t this_sector = r10_bio->sector; in read_balance()
729 int sectors = r10_bio->sectors; in read_balance()
737 struct geom *geo = &conf->geo; in read_balance()
741 best_dist_slot = -1; in read_balance()
748 clear_bit(R10BIO_FailFast, &r10_bio->state); in read_balance()
755 if ((conf->mddev->recovery_cp < MaxSector in read_balance()
756 && (this_sector + sectors >= conf->next_resync)) || in read_balance()
757 (mddev_is_clustered(conf->mddev) && in read_balance()
758 md_cluster_ops->area_resyncing(conf->mddev, READ, this_sector, in read_balance()
762 for (slot = 0; slot < conf->copies ; slot++) { in read_balance()
769 if (r10_bio->devs[slot].bio == IO_BLOCKED) in read_balance()
771 disk = r10_bio->devs[slot].devnum; in read_balance()
772 rdev = rcu_dereference(conf->mirrors[disk].replacement); in read_balance()
773 if (rdev == NULL || test_bit(Faulty, &rdev->flags) || in read_balance()
774 r10_bio->devs[slot].addr + sectors > in read_balance()
775 rdev->recovery_offset) { in read_balance()
782 rdev = rcu_dereference(conf->mirrors[disk].rdev); in read_balance()
785 test_bit(Faulty, &rdev->flags)) in read_balance()
787 if (!test_bit(In_sync, &rdev->flags) && in read_balance()
788 r10_bio->devs[slot].addr + sectors > rdev->recovery_offset) in read_balance()
791 dev_sector = r10_bio->devs[slot].addr; in read_balance()
802 bad_sectors -= (dev_sector - first_bad); in read_balance()
809 first_bad - dev_sector; in read_balance()
826 nonrot = bdev_nonrot(rdev->bdev); in read_balance()
828 pending = atomic_read(&rdev->nr_pending); in read_balance()
837 set_bit(R10BIO_FailFast, &r10_bio->state); in read_balance()
842 if (geo->near_copies > 1 && !pending) in read_balance()
846 else if (geo->far_copies > 1) in read_balance()
847 new_distance = r10_bio->devs[slot].addr; in read_balance()
849 new_distance = abs(r10_bio->devs[slot].addr - in read_balance()
850 conf->mirrors[disk].head_position); in read_balance()
858 if (slot >= conf->copies) { in read_balance()
869 atomic_inc(&rdev->nr_pending); in read_balance()
870 r10_bio->read_slot = slot; in read_balance()
884 spin_lock_irq(&conf->device_lock); in flush_pending_writes()
886 if (conf->pending_bio_list.head) { in flush_pending_writes()
890 bio = bio_list_get(&conf->pending_bio_list); in flush_pending_writes()
891 spin_unlock_irq(&conf->device_lock); in flush_pending_writes()
895 * current->state might be TASK_UNINTERRUPTIBLE which will in flush_pending_writes()
899 * is a false-positive. Silence the warning by resetting in flush_pending_writes()
905 raid1_prepare_flush_writes(conf->mddev->bitmap); in flush_pending_writes()
906 wake_up(&conf->wait_barrier); in flush_pending_writes()
909 struct bio *next = bio->bi_next; in flush_pending_writes()
917 spin_unlock_irq(&conf->device_lock); in flush_pending_writes()
929 * We choose only to raise the barrier if no-one is waiting for the
944 write_seqlock_irq(&conf->resync_lock); in raise_barrier()
946 if (WARN_ON_ONCE(force && !conf->barrier)) in raise_barrier()
950 wait_event_barrier(conf, force || !conf->nr_waiting); in raise_barrier()
953 WRITE_ONCE(conf->barrier, conf->barrier + 1); in raise_barrier()
956 wait_event_barrier(conf, !atomic_read(&conf->nr_pending) && in raise_barrier()
957 conf->barrier < RESYNC_DEPTH); in raise_barrier()
959 write_sequnlock_irq(&conf->resync_lock); in raise_barrier()
966 write_seqlock_irqsave(&conf->resync_lock, flags); in lower_barrier()
967 WRITE_ONCE(conf->barrier, conf->barrier - 1); in lower_barrier()
968 write_sequnlock_irqrestore(&conf->resync_lock, flags); in lower_barrier()
969 wake_up(&conf->wait_barrier); in lower_barrier()
974 struct bio_list *bio_list = current->bio_list; in stop_waiting_barrier()
978 if (!conf->barrier) in stop_waiting_barrier()
983 * rising completely), and the pre-process bio queue isn't empty, then in stop_waiting_barrier()
987 if (atomic_read(&conf->nr_pending) && bio_list && in stop_waiting_barrier()
992 thread = rcu_dereference_protected(conf->mddev->thread, true); in stop_waiting_barrier()
998 if (thread->tsk == current) { in stop_waiting_barrier()
999 WARN_ON_ONCE(atomic_read(&conf->nr_pending) == 0); in stop_waiting_barrier()
1008 unsigned int seq = read_seqbegin(&conf->resync_lock); in wait_barrier_nolock()
1010 if (READ_ONCE(conf->barrier)) in wait_barrier_nolock()
1013 atomic_inc(&conf->nr_pending); in wait_barrier_nolock()
1014 if (!read_seqretry(&conf->resync_lock, seq)) in wait_barrier_nolock()
1017 if (atomic_dec_and_test(&conf->nr_pending)) in wait_barrier_nolock()
1030 write_seqlock_irq(&conf->resync_lock); in wait_barrier()
1031 if (conf->barrier) { in wait_barrier()
1036 conf->nr_waiting++; in wait_barrier()
1037 raid10_log(conf->mddev, "wait barrier"); in wait_barrier()
1039 conf->nr_waiting--; in wait_barrier()
1041 if (!conf->nr_waiting) in wait_barrier()
1042 wake_up(&conf->wait_barrier); in wait_barrier()
1046 atomic_inc(&conf->nr_pending); in wait_barrier()
1047 write_sequnlock_irq(&conf->resync_lock); in wait_barrier()
1053 if ((atomic_dec_and_test(&conf->nr_pending)) || in allow_barrier()
1054 (conf->array_freeze_pending)) in allow_barrier()
1067 * pending IO requests to complete or be queued for re-try. in freeze_array()
1072 write_seqlock_irq(&conf->resync_lock); in freeze_array()
1073 conf->array_freeze_pending++; in freeze_array()
1074 WRITE_ONCE(conf->barrier, conf->barrier + 1); in freeze_array()
1075 conf->nr_waiting++; in freeze_array()
1076 wait_event_barrier_cmd(conf, atomic_read(&conf->nr_pending) == in freeze_array()
1077 conf->nr_queued + extra, flush_pending_writes(conf)); in freeze_array()
1078 conf->array_freeze_pending--; in freeze_array()
1079 write_sequnlock_irq(&conf->resync_lock); in freeze_array()
1085 write_seqlock_irq(&conf->resync_lock); in unfreeze_array()
1086 WRITE_ONCE(conf->barrier, conf->barrier - 1); in unfreeze_array()
1087 conf->nr_waiting--; in unfreeze_array()
1088 wake_up(&conf->wait_barrier); in unfreeze_array()
1089 write_sequnlock_irq(&conf->resync_lock); in unfreeze_array()
1095 if (!test_bit(MD_RECOVERY_RESHAPE, &rdev->mddev->recovery) || in choose_data_offset()
1096 test_bit(R10BIO_Previous, &r10_bio->state)) in choose_data_offset()
1097 return rdev->data_offset; in choose_data_offset()
1099 return rdev->new_data_offset; in choose_data_offset()
1105 struct mddev *mddev = plug->cb.data; in raid10_unplug()
1106 struct r10conf *conf = mddev->private; in raid10_unplug()
1110 spin_lock_irq(&conf->device_lock); in raid10_unplug()
1111 bio_list_merge(&conf->pending_bio_list, &plug->pending); in raid10_unplug()
1112 spin_unlock_irq(&conf->device_lock); in raid10_unplug()
1114 md_wakeup_thread(mddev->thread); in raid10_unplug()
1119 /* we aren't scheduling, so we can do the write-out directly. */ in raid10_unplug()
1120 bio = bio_list_get(&plug->pending); in raid10_unplug()
1121 raid1_prepare_flush_writes(mddev->bitmap); in raid10_unplug()
1125 struct bio *next = bio->bi_next; in raid10_unplug()
1144 if (!wait_barrier(conf, bio->bi_opf & REQ_NOWAIT)) { in regular_request_wait()
1148 while (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) && in regular_request_wait()
1149 bio->bi_iter.bi_sector < conf->reshape_progress && in regular_request_wait()
1150 bio->bi_iter.bi_sector + sectors > conf->reshape_progress) { in regular_request_wait()
1152 if (bio->bi_opf & REQ_NOWAIT) { in regular_request_wait()
1156 raid10_log(conf->mddev, "wait reshape"); in regular_request_wait()
1157 wait_event(conf->wait_barrier, in regular_request_wait()
1158 conf->reshape_progress <= bio->bi_iter.bi_sector || in regular_request_wait()
1159 conf->reshape_progress >= bio->bi_iter.bi_sector + in regular_request_wait()
1169 struct r10conf *conf = mddev->private; in raid10_read_request()
1172 const blk_opf_t do_sync = bio->bi_opf & REQ_SYNC; in raid10_read_request()
1176 int slot = r10_bio->read_slot; in raid10_read_request()
1180 if (slot >= 0 && r10_bio->devs[slot].rdev) { in raid10_read_request()
1196 disk = r10_bio->devs[slot].devnum; in raid10_read_request()
1197 err_rdev = rcu_dereference(conf->mirrors[disk].rdev); in raid10_read_request()
1199 snprintf(b, sizeof(b), "%pg", err_rdev->bdev); in raid10_read_request()
1203 err_rdev = r10_bio->devs[slot].rdev; in raid10_read_request()
1208 if (!regular_request_wait(mddev, conf, bio, r10_bio->sectors)) in raid10_read_request()
1215 (unsigned long long)r10_bio->sector); in raid10_read_request()
1223 rdev->bdev, in raid10_read_request()
1224 (unsigned long long)r10_bio->sector); in raid10_read_request()
1227 gfp, &conf->bio_split); in raid10_read_request()
1233 r10_bio->master_bio = bio; in raid10_read_request()
1234 r10_bio->sectors = max_sectors; in raid10_read_request()
1236 slot = r10_bio->read_slot; in raid10_read_request()
1240 r10_bio->master_bio = bio; in raid10_read_request()
1242 read_bio = bio_alloc_clone(rdev->bdev, bio, gfp, &mddev->bio_set); in raid10_read_request()
1244 r10_bio->devs[slot].bio = read_bio; in raid10_read_request()
1245 r10_bio->devs[slot].rdev = rdev; in raid10_read_request()
1247 read_bio->bi_iter.bi_sector = r10_bio->devs[slot].addr + in raid10_read_request()
1249 read_bio->bi_end_io = raid10_end_read_request; in raid10_read_request()
1250 read_bio->bi_opf = op | do_sync; in raid10_read_request()
1251 if (test_bit(FailFast, &rdev->flags) && in raid10_read_request()
1252 test_bit(R10BIO_FailFast, &r10_bio->state)) in raid10_read_request()
1253 read_bio->bi_opf |= MD_FAILFAST; in raid10_read_request()
1254 read_bio->bi_private = r10_bio; in raid10_read_request()
1256 if (mddev->gendisk) in raid10_read_request()
1257 trace_block_bio_remap(read_bio, disk_devt(mddev->gendisk), in raid10_read_request()
1258 r10_bio->sector); in raid10_read_request()
1268 const blk_opf_t do_sync = bio->bi_opf & REQ_SYNC; in raid10_write_one_disk()
1269 const blk_opf_t do_fua = bio->bi_opf & REQ_FUA; in raid10_write_one_disk()
1271 struct r10conf *conf = mddev->private; in raid10_write_one_disk()
1273 int devnum = r10_bio->devs[n_copy].devnum; in raid10_write_one_disk()
1277 rdev = conf->mirrors[devnum].replacement; in raid10_write_one_disk()
1281 rdev = conf->mirrors[devnum].rdev; in raid10_write_one_disk()
1284 rdev = conf->mirrors[devnum].rdev; in raid10_write_one_disk()
1286 mbio = bio_alloc_clone(rdev->bdev, bio, GFP_NOIO, &mddev->bio_set); in raid10_write_one_disk()
1288 r10_bio->devs[n_copy].repl_bio = mbio; in raid10_write_one_disk()
1290 r10_bio->devs[n_copy].bio = mbio; in raid10_write_one_disk()
1292 mbio->bi_iter.bi_sector = (r10_bio->devs[n_copy].addr + in raid10_write_one_disk()
1294 mbio->bi_end_io = raid10_end_write_request; in raid10_write_one_disk()
1295 mbio->bi_opf = op | do_sync | do_fua; in raid10_write_one_disk()
1297 &conf->mirrors[devnum].rdev->flags) in raid10_write_one_disk()
1299 mbio->bi_opf |= MD_FAILFAST; in raid10_write_one_disk()
1300 mbio->bi_private = r10_bio; in raid10_write_one_disk()
1302 if (conf->mddev->gendisk) in raid10_write_one_disk()
1303 trace_block_bio_remap(mbio, disk_devt(conf->mddev->gendisk), in raid10_write_one_disk()
1304 r10_bio->sector); in raid10_write_one_disk()
1306 mbio->bi_bdev = (void *)rdev; in raid10_write_one_disk()
1308 atomic_inc(&r10_bio->remaining); in raid10_write_one_disk()
1310 if (!raid1_add_bio_to_plug(mddev, mbio, raid10_unplug, conf->copies)) { in raid10_write_one_disk()
1311 spin_lock_irqsave(&conf->device_lock, flags); in raid10_write_one_disk()
1312 bio_list_add(&conf->pending_bio_list, mbio); in raid10_write_one_disk()
1313 spin_unlock_irqrestore(&conf->device_lock, flags); in raid10_write_one_disk()
1314 md_wakeup_thread(mddev->thread); in raid10_write_one_disk()
1323 rrdev = rcu_dereference(mirror->replacement); in dereference_rdev_and_rrdev()
1329 rdev = rcu_dereference(mirror->rdev); in dereference_rdev_and_rrdev()
1340 struct r10conf *conf = mddev->private; in wait_blocked_dev()
1346 for (i = 0; i < conf->copies; i++) { in wait_blocked_dev()
1349 rdev = dereference_rdev_and_rrdev(&conf->mirrors[i], &rrdev); in wait_blocked_dev()
1350 if (rdev && unlikely(test_bit(Blocked, &rdev->flags))) { in wait_blocked_dev()
1351 atomic_inc(&rdev->nr_pending); in wait_blocked_dev()
1355 if (rrdev && unlikely(test_bit(Blocked, &rrdev->flags))) { in wait_blocked_dev()
1356 atomic_inc(&rrdev->nr_pending); in wait_blocked_dev()
1361 if (rdev && test_bit(WriteErrorSeen, &rdev->flags)) { in wait_blocked_dev()
1363 sector_t dev_sector = r10_bio->devs[i].addr; in wait_blocked_dev()
1371 if (!r10_bio->sectors) in wait_blocked_dev()
1374 is_bad = is_badblock(rdev, dev_sector, r10_bio->sectors, in wait_blocked_dev()
1381 atomic_inc(&rdev->nr_pending); in wait_blocked_dev()
1382 set_bit(BlockedBadBlocks, &rdev->flags); in wait_blocked_dev()
1393 raid10_log(conf->mddev, "%s wait rdev %d blocked", in wait_blocked_dev()
1394 __func__, blocked_rdev->raid_disk); in wait_blocked_dev()
1404 struct r10conf *conf = mddev->private; in raid10_write_request()
1410 md_cluster_ops->area_resyncing(mddev, WRITE, in raid10_write_request()
1411 bio->bi_iter.bi_sector, in raid10_write_request()
1415 if (bio->bi_opf & REQ_NOWAIT) { in raid10_write_request()
1420 prepare_to_wait(&conf->wait_barrier, in raid10_write_request()
1422 if (!md_cluster_ops->area_resyncing(mddev, WRITE, in raid10_write_request()
1423 bio->bi_iter.bi_sector, bio_end_sector(bio))) in raid10_write_request()
1427 finish_wait(&conf->wait_barrier, &w); in raid10_write_request()
1430 sectors = r10_bio->sectors; in raid10_write_request()
1433 if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) && in raid10_write_request()
1434 (mddev->reshape_backwards in raid10_write_request()
1435 ? (bio->bi_iter.bi_sector < conf->reshape_safe && in raid10_write_request()
1436 bio->bi_iter.bi_sector + sectors > conf->reshape_progress) in raid10_write_request()
1437 : (bio->bi_iter.bi_sector + sectors > conf->reshape_safe && in raid10_write_request()
1438 bio->bi_iter.bi_sector < conf->reshape_progress))) { in raid10_write_request()
1439 /* Need to update reshape_position in metadata */ in raid10_write_request()
1440 mddev->reshape_position = conf->reshape_progress; in raid10_write_request()
1441 set_mask_bits(&mddev->sb_flags, 0, in raid10_write_request()
1443 md_wakeup_thread(mddev->thread); in raid10_write_request()
1444 if (bio->bi_opf & REQ_NOWAIT) { in raid10_write_request()
1449 raid10_log(conf->mddev, "wait reshape metadata"); in raid10_write_request()
1450 wait_event(mddev->sb_wait, in raid10_write_request()
1451 !test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags)); in raid10_write_request()
1453 conf->reshape_safe = mddev->reshape_position; in raid10_write_request()
1466 r10_bio->read_slot = -1; /* make sure repl_bio gets freed */ in raid10_write_request()
1472 max_sectors = r10_bio->sectors; in raid10_write_request()
1474 for (i = 0; i < conf->copies; i++) { in raid10_write_request()
1475 int d = r10_bio->devs[i].devnum; in raid10_write_request()
1478 rdev = dereference_rdev_and_rrdev(&conf->mirrors[d], &rrdev); in raid10_write_request()
1479 if (rdev && (test_bit(Faulty, &rdev->flags))) in raid10_write_request()
1481 if (rrdev && (test_bit(Faulty, &rrdev->flags))) in raid10_write_request()
1484 r10_bio->devs[i].bio = NULL; in raid10_write_request()
1485 r10_bio->devs[i].repl_bio = NULL; in raid10_write_request()
1489 if (rdev && test_bit(WriteErrorSeen, &rdev->flags)) { in raid10_write_request()
1491 sector_t dev_sector = r10_bio->devs[i].addr; in raid10_write_request()
1499 bad_sectors -= (dev_sector - first_bad); in raid10_write_request()
1508 int good_sectors = first_bad - dev_sector; in raid10_write_request()
1514 r10_bio->devs[i].bio = bio; in raid10_write_request()
1515 atomic_inc(&rdev->nr_pending); in raid10_write_request()
1518 r10_bio->devs[i].repl_bio = bio; in raid10_write_request()
1519 atomic_inc(&rrdev->nr_pending); in raid10_write_request()
1524 if (max_sectors < r10_bio->sectors) in raid10_write_request()
1525 r10_bio->sectors = max_sectors; in raid10_write_request()
1527 if (r10_bio->sectors < bio_sectors(bio)) { in raid10_write_request()
1528 struct bio *split = bio_split(bio, r10_bio->sectors, in raid10_write_request()
1529 GFP_NOIO, &conf->bio_split); in raid10_write_request()
1535 r10_bio->master_bio = bio; in raid10_write_request()
1539 r10_bio->master_bio = bio; in raid10_write_request()
1540 atomic_set(&r10_bio->remaining, 1); in raid10_write_request()
1542 for (i = 0; i < conf->copies; i++) { in raid10_write_request()
1543 if (r10_bio->devs[i].bio) in raid10_write_request()
1545 if (r10_bio->devs[i].repl_bio) in raid10_write_request()
1553 struct r10conf *conf = mddev->private; in __make_request()
1556 r10_bio = mempool_alloc(&conf->r10bio_pool, GFP_NOIO); in __make_request()
1558 r10_bio->master_bio = bio; in __make_request()
1559 r10_bio->sectors = sectors; in __make_request()
1561 r10_bio->mddev = mddev; in __make_request()
1562 r10_bio->sector = bio->bi_iter.bi_sector; in __make_request()
1563 r10_bio->state = 0; in __make_request()
1564 r10_bio->read_slot = -1; in __make_request()
1565 memset(r10_bio->devs, 0, sizeof(r10_bio->devs[0]) * in __make_request()
1566 conf->geo.raid_disks); in __make_request()
1576 struct r10conf *conf = r10bio->mddev->private; in raid_end_discard_bio()
1579 while (atomic_dec_and_test(&r10bio->remaining)) { in raid_end_discard_bio()
1583 if (!test_bit(R10BIO_Discard, &r10bio->state)) { in raid_end_discard_bio()
1584 first_r10bio = (struct r10bio *)r10bio->master_bio; in raid_end_discard_bio()
1588 md_write_end(r10bio->mddev); in raid_end_discard_bio()
1589 bio_endio(r10bio->master_bio); in raid_end_discard_bio()
1598 struct r10bio *r10_bio = bio->bi_private; in raid10_end_discard_request()
1599 struct r10conf *conf = r10_bio->mddev->private; in raid10_end_discard_request()
1607 if (!test_bit(R10BIO_Uptodate, &r10_bio->state)) in raid10_end_discard_request()
1608 set_bit(R10BIO_Uptodate, &r10_bio->state); in raid10_end_discard_request()
1612 rdev = conf->mirrors[dev].replacement; in raid10_end_discard_request()
1620 rdev = conf->mirrors[dev].rdev; in raid10_end_discard_request()
1624 rdev_dec_pending(rdev, conf->mddev); in raid10_end_discard_request()
1635 struct r10conf *conf = mddev->private; in raid10_handle_discard()
1636 struct geom *geo = &conf->geo; in raid10_handle_discard()
1637 int far_copies = geo->far_copies; in raid10_handle_discard()
1654 if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) in raid10_handle_discard()
1655 return -EAGAIN; in raid10_handle_discard()
1657 if (WARN_ON_ONCE(bio->bi_opf & REQ_NOWAIT)) { in raid10_handle_discard()
1667 if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) in raid10_handle_discard()
1670 if (geo->near_copies) in raid10_handle_discard()
1671 stripe_data_disks = geo->raid_disks / geo->near_copies + in raid10_handle_discard()
1672 geo->raid_disks % geo->near_copies; in raid10_handle_discard()
1674 stripe_data_disks = geo->raid_disks; in raid10_handle_discard()
1676 stripe_size = stripe_data_disks << geo->chunk_shift; in raid10_handle_discard()
1678 bio_start = bio->bi_iter.bi_sector; in raid10_handle_discard()
1697 split_size = stripe_size - remainder; in raid10_handle_discard()
1698 split = bio_split(bio, split_size, GFP_NOIO, &conf->bio_split); in raid10_handle_discard()
1707 split_size = bio_sectors(bio) - remainder; in raid10_handle_discard()
1708 split = bio_split(bio, split_size, GFP_NOIO, &conf->bio_split); in raid10_handle_discard()
1717 bio_start = bio->bi_iter.bi_sector; in raid10_handle_discard()
1725 chunk = bio_start >> geo->chunk_shift; in raid10_handle_discard()
1726 chunk *= geo->near_copies; in raid10_handle_discard()
1728 start_disk_index = sector_div(first_stripe_index, geo->raid_disks); in raid10_handle_discard()
1729 if (geo->far_offset) in raid10_handle_discard()
1730 first_stripe_index *= geo->far_copies; in raid10_handle_discard()
1731 start_disk_offset = (bio_start & geo->chunk_mask) + in raid10_handle_discard()
1732 (first_stripe_index << geo->chunk_shift); in raid10_handle_discard()
1734 chunk = bio_end >> geo->chunk_shift; in raid10_handle_discard()
1735 chunk *= geo->near_copies; in raid10_handle_discard()
1737 end_disk_index = sector_div(last_stripe_index, geo->raid_disks); in raid10_handle_discard()
1738 if (geo->far_offset) in raid10_handle_discard()
1739 last_stripe_index *= geo->far_copies; in raid10_handle_discard()
1740 end_disk_offset = (bio_end & geo->chunk_mask) + in raid10_handle_discard()
1741 (last_stripe_index << geo->chunk_shift); in raid10_handle_discard()
1744 r10_bio = mempool_alloc(&conf->r10bio_pool, GFP_NOIO); in raid10_handle_discard()
1745 r10_bio->mddev = mddev; in raid10_handle_discard()
1746 r10_bio->state = 0; in raid10_handle_discard()
1747 r10_bio->sectors = 0; in raid10_handle_discard()
1748 memset(r10_bio->devs, 0, sizeof(r10_bio->devs[0]) * geo->raid_disks); in raid10_handle_discard()
1753 * Inspired by raid10_sync_request, we can use the first r10bio->master_bio in raid10_handle_discard()
1754 * to record the discard bio. Other r10bio->master_bio record the first in raid10_handle_discard()
1760 r10_bio->master_bio = bio; in raid10_handle_discard()
1761 set_bit(R10BIO_Discard, &r10_bio->state); in raid10_handle_discard()
1765 r10_bio->master_bio = (struct bio *)first_r10bio; in raid10_handle_discard()
1773 for (disk = 0; disk < geo->raid_disks; disk++) { in raid10_handle_discard()
1776 rdev = dereference_rdev_and_rrdev(&conf->mirrors[disk], &rrdev); in raid10_handle_discard()
1777 r10_bio->devs[disk].bio = NULL; in raid10_handle_discard()
1778 r10_bio->devs[disk].repl_bio = NULL; in raid10_handle_discard()
1780 if (rdev && (test_bit(Faulty, &rdev->flags))) in raid10_handle_discard()
1782 if (rrdev && (test_bit(Faulty, &rrdev->flags))) in raid10_handle_discard()
1788 r10_bio->devs[disk].bio = bio; in raid10_handle_discard()
1789 atomic_inc(&rdev->nr_pending); in raid10_handle_discard()
1792 r10_bio->devs[disk].repl_bio = bio; in raid10_handle_discard()
1793 atomic_inc(&rrdev->nr_pending); in raid10_handle_discard()
1798 atomic_set(&r10_bio->remaining, 1); in raid10_handle_discard()
1799 for (disk = 0; disk < geo->raid_disks; disk++) { in raid10_handle_discard()
1816 dev_start = (first_stripe_index + 1) * mddev->chunk_sectors; in raid10_handle_discard()
1818 dev_start = first_stripe_index * mddev->chunk_sectors; in raid10_handle_discard()
1823 dev_end = (last_stripe_index + 1) * mddev->chunk_sectors; in raid10_handle_discard()
1825 dev_end = last_stripe_index * mddev->chunk_sectors; in raid10_handle_discard()
1833 * add rdev->nr_pending in the first loop. in raid10_handle_discard()
1835 if (r10_bio->devs[disk].bio) { in raid10_handle_discard()
1836 struct md_rdev *rdev = conf->mirrors[disk].rdev; in raid10_handle_discard()
1837 mbio = bio_alloc_clone(bio->bi_bdev, bio, GFP_NOIO, in raid10_handle_discard()
1838 &mddev->bio_set); in raid10_handle_discard()
1839 mbio->bi_end_io = raid10_end_discard_request; in raid10_handle_discard()
1840 mbio->bi_private = r10_bio; in raid10_handle_discard()
1841 r10_bio->devs[disk].bio = mbio; in raid10_handle_discard()
1842 r10_bio->devs[disk].devnum = disk; in raid10_handle_discard()
1843 atomic_inc(&r10_bio->remaining); in raid10_handle_discard()
1846 dev_end - dev_start); in raid10_handle_discard()
1849 if (r10_bio->devs[disk].repl_bio) { in raid10_handle_discard()
1850 struct md_rdev *rrdev = conf->mirrors[disk].replacement; in raid10_handle_discard()
1851 rbio = bio_alloc_clone(bio->bi_bdev, bio, GFP_NOIO, in raid10_handle_discard()
1852 &mddev->bio_set); in raid10_handle_discard()
1853 rbio->bi_end_io = raid10_end_discard_request; in raid10_handle_discard()
1854 rbio->bi_private = r10_bio; in raid10_handle_discard()
1855 r10_bio->devs[disk].repl_bio = rbio; in raid10_handle_discard()
1856 r10_bio->devs[disk].devnum = disk; in raid10_handle_discard()
1857 atomic_inc(&r10_bio->remaining); in raid10_handle_discard()
1860 dev_end - dev_start); in raid10_handle_discard()
1865 if (!geo->far_offset && --far_copies) { in raid10_handle_discard()
1866 first_stripe_index += geo->stride >> geo->chunk_shift; in raid10_handle_discard()
1867 start_disk_offset += geo->stride; in raid10_handle_discard()
1868 last_stripe_index += geo->stride >> geo->chunk_shift; in raid10_handle_discard()
1869 end_disk_offset += geo->stride; in raid10_handle_discard()
1870 atomic_inc(&first_r10bio->remaining); in raid10_handle_discard()
1881 return -EAGAIN; in raid10_handle_discard()
1886 struct r10conf *conf = mddev->private; in raid10_make_request()
1887 sector_t chunk_mask = (conf->geo.chunk_mask & conf->prev.chunk_mask); in raid10_make_request()
1891 if (unlikely(bio->bi_opf & REQ_PREFLUSH) in raid10_make_request()
1906 if (unlikely((bio->bi_iter.bi_sector & chunk_mask) + in raid10_make_request()
1908 && (conf->geo.near_copies < conf->geo.raid_disks in raid10_make_request()
1909 || conf->prev.near_copies < in raid10_make_request()
1910 conf->prev.raid_disks))) in raid10_make_request()
1911 sectors = chunk_sects - in raid10_make_request()
1912 (bio->bi_iter.bi_sector & in raid10_make_request()
1913 (chunk_sects - 1)); in raid10_make_request()
1923 struct r10conf *conf = mddev->private; in raid10_status()
1926 if (conf->geo.near_copies < conf->geo.raid_disks) in raid10_status()
1927 seq_printf(seq, " %dK chunks", mddev->chunk_sectors / 2); in raid10_status()
1928 if (conf->geo.near_copies > 1) in raid10_status()
1929 seq_printf(seq, " %d near-copies", conf->geo.near_copies); in raid10_status()
1930 if (conf->geo.far_copies > 1) { in raid10_status()
1931 if (conf->geo.far_offset) in raid10_status()
1932 seq_printf(seq, " %d offset-copies", conf->geo.far_copies); in raid10_status()
1934 seq_printf(seq, " %d far-copies", conf->geo.far_copies); in raid10_status()
1935 if (conf->geo.far_set_size != conf->geo.raid_disks) in raid10_status()
1936 seq_printf(seq, " %d devices per set", conf->geo.far_set_size); in raid10_status()
1938 seq_printf(seq, " [%d/%d] [", conf->geo.raid_disks, in raid10_status()
1939 conf->geo.raid_disks - mddev->degraded); in raid10_status()
1941 for (i = 0; i < conf->geo.raid_disks; i++) { in raid10_status()
1942 struct md_rdev *rdev = rcu_dereference(conf->mirrors[i].rdev); in raid10_status()
1943 seq_printf(seq, "%s", rdev && test_bit(In_sync, &rdev->flags) ? "U" : "_"); in raid10_status()
1960 disks = conf->prev.raid_disks; in _enough()
1961 ncopies = conf->prev.near_copies; in _enough()
1963 disks = conf->geo.raid_disks; in _enough()
1964 ncopies = conf->geo.near_copies; in _enough()
1969 int n = conf->copies; in _enough()
1972 while (n--) { in _enough()
1975 (rdev = rcu_dereference(conf->mirrors[this].rdev)) && in _enough()
1976 test_bit(In_sync, &rdev->flags)) in _enough()
1994 * This is ensured if ->reconfig_mutex or ->device_lock in enough()
2002 * raid10_error() - RAID10 error handler.
2008 * - &MD_BROKEN flag is set in &mddev->flags.
2010 * - recovery is interrupted.
2011 * - &mddev->degraded is bumped.
2014 * &mddev->fail_last_dev is off.
2018 struct r10conf *conf = mddev->private; in raid10_error()
2021 spin_lock_irqsave(&conf->device_lock, flags); in raid10_error()
2023 if (test_bit(In_sync, &rdev->flags) && !enough(conf, rdev->raid_disk)) { in raid10_error()
2024 set_bit(MD_BROKEN, &mddev->flags); in raid10_error()
2026 if (!mddev->fail_last_dev) { in raid10_error()
2027 spin_unlock_irqrestore(&conf->device_lock, flags); in raid10_error()
2031 if (test_and_clear_bit(In_sync, &rdev->flags)) in raid10_error()
2032 mddev->degraded++; in raid10_error()
2034 set_bit(MD_RECOVERY_INTR, &mddev->recovery); in raid10_error()
2035 set_bit(Blocked, &rdev->flags); in raid10_error()
2036 set_bit(Faulty, &rdev->flags); in raid10_error()
2037 set_mask_bits(&mddev->sb_flags, 0, in raid10_error()
2039 spin_unlock_irqrestore(&conf->device_lock, flags); in raid10_error()
2042 mdname(mddev), rdev->bdev, in raid10_error()
2043 mdname(mddev), conf->geo.raid_disks - mddev->degraded); in raid10_error()
2056 pr_debug(" --- wd:%d rd:%d\n", conf->geo.raid_disks - conf->mddev->degraded, in print_conf()
2057 conf->geo.raid_disks); in print_conf()
2059 /* This is only called with ->reconfix_mutex held, so in print_conf()
2061 for (i = 0; i < conf->geo.raid_disks; i++) { in print_conf()
2062 rdev = conf->mirrors[i].rdev; in print_conf()
2065 i, !test_bit(In_sync, &rdev->flags), in print_conf()
2066 !test_bit(Faulty, &rdev->flags), in print_conf()
2067 rdev->bdev); in print_conf()
2076 mempool_exit(&conf->r10buf_pool); in close_sync()
2082 struct r10conf *conf = mddev->private; in raid10_spare_active()
2088 * Find all non-in_sync disks within the RAID10 configuration in raid10_spare_active()
2091 for (i = 0; i < conf->geo.raid_disks; i++) { in raid10_spare_active()
2092 tmp = conf->mirrors + i; in raid10_spare_active()
2093 if (tmp->replacement in raid10_spare_active()
2094 && tmp->replacement->recovery_offset == MaxSector in raid10_spare_active()
2095 && !test_bit(Faulty, &tmp->replacement->flags) in raid10_spare_active()
2096 && !test_and_set_bit(In_sync, &tmp->replacement->flags)) { in raid10_spare_active()
2098 if (!tmp->rdev in raid10_spare_active()
2099 || !test_and_clear_bit(In_sync, &tmp->rdev->flags)) in raid10_spare_active()
2101 if (tmp->rdev) { in raid10_spare_active()
2104 * and never re-added. in raid10_spare_active()
2106 set_bit(Faulty, &tmp->rdev->flags); in raid10_spare_active()
2108 tmp->rdev->sysfs_state); in raid10_spare_active()
2110 sysfs_notify_dirent_safe(tmp->replacement->sysfs_state); in raid10_spare_active()
2111 } else if (tmp->rdev in raid10_spare_active()
2112 && tmp->rdev->recovery_offset == MaxSector in raid10_spare_active()
2113 && !test_bit(Faulty, &tmp->rdev->flags) in raid10_spare_active()
2114 && !test_and_set_bit(In_sync, &tmp->rdev->flags)) { in raid10_spare_active()
2116 sysfs_notify_dirent_safe(tmp->rdev->sysfs_state); in raid10_spare_active()
2119 spin_lock_irqsave(&conf->device_lock, flags); in raid10_spare_active()
2120 mddev->degraded -= count; in raid10_spare_active()
2121 spin_unlock_irqrestore(&conf->device_lock, flags); in raid10_spare_active()
2129 struct r10conf *conf = mddev->private; in raid10_add_disk()
2130 int err = -EEXIST; in raid10_add_disk()
2131 int mirror, repl_slot = -1; in raid10_add_disk()
2133 int last = conf->geo.raid_disks - 1; in raid10_add_disk()
2136 if (mddev->recovery_cp < MaxSector) in raid10_add_disk()
2137 /* only hot-add to in-sync arrays, as recovery is in raid10_add_disk()
2140 return -EBUSY; in raid10_add_disk()
2141 if (rdev->saved_raid_disk < 0 && !_enough(conf, 1, -1)) in raid10_add_disk()
2142 return -EINVAL; in raid10_add_disk()
2145 return -ENXIO; in raid10_add_disk()
2147 if (rdev->raid_disk >= 0) in raid10_add_disk()
2148 first = last = rdev->raid_disk; in raid10_add_disk()
2150 if (rdev->saved_raid_disk >= first && in raid10_add_disk()
2151 rdev->saved_raid_disk < conf->geo.raid_disks && in raid10_add_disk()
2152 conf->mirrors[rdev->saved_raid_disk].rdev == NULL) in raid10_add_disk()
2153 mirror = rdev->saved_raid_disk; in raid10_add_disk()
2157 p = &conf->mirrors[mirror]; in raid10_add_disk()
2158 if (p->recovery_disabled == mddev->recovery_disabled) in raid10_add_disk()
2160 if (p->rdev) { in raid10_add_disk()
2161 if (test_bit(WantReplacement, &p->rdev->flags) && in raid10_add_disk()
2162 p->replacement == NULL && repl_slot < 0) in raid10_add_disk()
2167 if (mddev->gendisk) in raid10_add_disk()
2168 disk_stack_limits(mddev->gendisk, rdev->bdev, in raid10_add_disk()
2169 rdev->data_offset << 9); in raid10_add_disk()
2171 p->head_position = 0; in raid10_add_disk()
2172 p->recovery_disabled = mddev->recovery_disabled - 1; in raid10_add_disk()
2173 rdev->raid_disk = mirror; in raid10_add_disk()
2175 if (rdev->saved_raid_disk != mirror) in raid10_add_disk()
2176 conf->fullsync = 1; in raid10_add_disk()
2177 rcu_assign_pointer(p->rdev, rdev); in raid10_add_disk()
2182 p = &conf->mirrors[repl_slot]; in raid10_add_disk()
2183 clear_bit(In_sync, &rdev->flags); in raid10_add_disk()
2184 set_bit(Replacement, &rdev->flags); in raid10_add_disk()
2185 rdev->raid_disk = repl_slot; in raid10_add_disk()
2187 if (mddev->gendisk) in raid10_add_disk()
2188 disk_stack_limits(mddev->gendisk, rdev->bdev, in raid10_add_disk()
2189 rdev->data_offset << 9); in raid10_add_disk()
2190 conf->fullsync = 1; in raid10_add_disk()
2191 rcu_assign_pointer(p->replacement, rdev); in raid10_add_disk()
2200 struct r10conf *conf = mddev->private; in raid10_remove_disk()
2202 int number = rdev->raid_disk; in raid10_remove_disk()
2207 if (unlikely(number >= mddev->raid_disks)) in raid10_remove_disk()
2209 p = conf->mirrors + number; in raid10_remove_disk()
2210 if (rdev == p->rdev) in raid10_remove_disk()
2211 rdevp = &p->rdev; in raid10_remove_disk()
2212 else if (rdev == p->replacement) in raid10_remove_disk()
2213 rdevp = &p->replacement; in raid10_remove_disk()
2217 if (test_bit(In_sync, &rdev->flags) || in raid10_remove_disk()
2218 atomic_read(&rdev->nr_pending)) { in raid10_remove_disk()
2219 err = -EBUSY; in raid10_remove_disk()
2222 /* Only remove non-faulty devices if recovery in raid10_remove_disk()
2225 if (!test_bit(Faulty, &rdev->flags) && in raid10_remove_disk()
2226 mddev->recovery_disabled != p->recovery_disabled && in raid10_remove_disk()
2227 (!p->replacement || p->replacement == rdev) && in raid10_remove_disk()
2228 number < conf->geo.raid_disks && in raid10_remove_disk()
2229 enough(conf, -1)) { in raid10_remove_disk()
2230 err = -EBUSY; in raid10_remove_disk()
2234 if (!test_bit(RemoveSynchronized, &rdev->flags)) { in raid10_remove_disk()
2236 if (atomic_read(&rdev->nr_pending)) { in raid10_remove_disk()
2238 err = -EBUSY; in raid10_remove_disk()
2243 if (p->replacement) { in raid10_remove_disk()
2245 p->rdev = p->replacement; in raid10_remove_disk()
2246 clear_bit(Replacement, &p->replacement->flags); in raid10_remove_disk()
2248 * but will never see neither -- if they are careful. in raid10_remove_disk()
2250 p->replacement = NULL; in raid10_remove_disk()
2253 clear_bit(WantReplacement, &rdev->flags); in raid10_remove_disk()
2264 struct r10conf *conf = r10_bio->mddev->private; in __end_sync_read()
2266 if (!bio->bi_status) in __end_sync_read()
2267 set_bit(R10BIO_Uptodate, &r10_bio->state); in __end_sync_read()
2272 atomic_add(r10_bio->sectors, in __end_sync_read()
2273 &conf->mirrors[d].rdev->corrected_errors); in __end_sync_read()
2278 rdev_dec_pending(conf->mirrors[d].rdev, conf->mddev); in __end_sync_read()
2279 if (test_bit(R10BIO_IsRecover, &r10_bio->state) || in __end_sync_read()
2280 atomic_dec_and_test(&r10_bio->remaining)) { in __end_sync_read()
2291 struct r10conf *conf = r10_bio->mddev->private; in end_sync_read()
2300 struct r10bio *r10_bio = bio->bi_private; in end_reshape_read()
2302 __end_sync_read(r10_bio, bio, r10_bio->read_slot); in end_reshape_read()
2307 struct mddev *mddev = r10_bio->mddev; in end_sync_request()
2309 while (atomic_dec_and_test(&r10_bio->remaining)) { in end_sync_request()
2310 if (r10_bio->master_bio == NULL) { in end_sync_request()
2312 sector_t s = r10_bio->sectors; in end_sync_request()
2313 if (test_bit(R10BIO_MadeGood, &r10_bio->state) || in end_sync_request()
2314 test_bit(R10BIO_WriteError, &r10_bio->state)) in end_sync_request()
2321 struct r10bio *r10_bio2 = (struct r10bio *)r10_bio->master_bio; in end_sync_request()
2322 if (test_bit(R10BIO_MadeGood, &r10_bio->state) || in end_sync_request()
2323 test_bit(R10BIO_WriteError, &r10_bio->state)) in end_sync_request()
2335 struct mddev *mddev = r10_bio->mddev; in end_sync_write()
2336 struct r10conf *conf = mddev->private; in end_sync_write()
2346 rdev = conf->mirrors[d].replacement; in end_sync_write()
2348 rdev = conf->mirrors[d].rdev; in end_sync_write()
2350 if (bio->bi_status) { in end_sync_write()
2354 set_bit(WriteErrorSeen, &rdev->flags); in end_sync_write()
2355 if (!test_and_set_bit(WantReplacement, &rdev->flags)) in end_sync_write()
2357 &rdev->mddev->recovery); in end_sync_write()
2358 set_bit(R10BIO_WriteError, &r10_bio->state); in end_sync_write()
2361 r10_bio->devs[slot].addr, in end_sync_write()
2362 r10_bio->sectors, in end_sync_write()
2364 set_bit(R10BIO_MadeGood, &r10_bio->state); in end_sync_write()
2384 * We check if all blocks are in-sync and only write to blocks that
2389 struct r10conf *conf = mddev->private; in sync_request_write()
2395 atomic_set(&r10_bio->remaining, 1); in sync_request_write()
2398 for (i=0; i<conf->copies; i++) in sync_request_write()
2399 if (!r10_bio->devs[i].bio->bi_status) in sync_request_write()
2402 if (i == conf->copies) in sync_request_write()
2406 fbio = r10_bio->devs[i].bio; in sync_request_write()
2407 fbio->bi_iter.bi_size = r10_bio->sectors << 9; in sync_request_write()
2408 fbio->bi_iter.bi_idx = 0; in sync_request_write()
2409 fpages = get_resync_pages(fbio)->pages; in sync_request_write()
2411 vcnt = (r10_bio->sectors + (PAGE_SIZE >> 9) - 1) >> (PAGE_SHIFT - 9); in sync_request_write()
2413 for (i=0 ; i < conf->copies ; i++) { in sync_request_write()
2418 tbio = r10_bio->devs[i].bio; in sync_request_write()
2420 if (tbio->bi_end_io != end_sync_read) in sync_request_write()
2425 tpages = get_resync_pages(tbio)->pages; in sync_request_write()
2426 d = r10_bio->devs[i].devnum; in sync_request_write()
2427 rdev = conf->mirrors[d].rdev; in sync_request_write()
2428 if (!r10_bio->devs[i].bio->bi_status) { in sync_request_write()
2433 int sectors = r10_bio->sectors; in sync_request_write()
2442 sectors -= len/512; in sync_request_write()
2446 atomic64_add(r10_bio->sectors, &mddev->resync_mismatches); in sync_request_write()
2447 if (test_bit(MD_RECOVERY_CHECK, &mddev->recovery)) in sync_request_write()
2450 } else if (test_bit(FailFast, &rdev->flags)) { in sync_request_write()
2452 md_error(rdev->mddev, rdev); in sync_request_write()
2457 * First we need to fixup bv_offset, bv_len and in sync_request_write()
2461 bio_reset(tbio, conf->mirrors[d].rdev->bdev, REQ_OP_WRITE); in sync_request_write()
2463 md_bio_reset_resync_pages(tbio, rp, fbio->bi_iter.bi_size); in sync_request_write()
2465 rp->raid_bio = r10_bio; in sync_request_write()
2466 tbio->bi_private = rp; in sync_request_write()
2467 tbio->bi_iter.bi_sector = r10_bio->devs[i].addr; in sync_request_write()
2468 tbio->bi_end_io = end_sync_write; in sync_request_write()
2472 atomic_inc(&conf->mirrors[d].rdev->nr_pending); in sync_request_write()
2473 atomic_inc(&r10_bio->remaining); in sync_request_write()
2474 md_sync_acct(conf->mirrors[d].rdev->bdev, bio_sectors(tbio)); in sync_request_write()
2476 if (test_bit(FailFast, &conf->mirrors[d].rdev->flags)) in sync_request_write()
2477 tbio->bi_opf |= MD_FAILFAST; in sync_request_write()
2478 tbio->bi_iter.bi_sector += conf->mirrors[d].rdev->data_offset; in sync_request_write()
2485 for (i = 0; i < conf->copies; i++) { in sync_request_write()
2488 tbio = r10_bio->devs[i].repl_bio; in sync_request_write()
2489 if (!tbio || !tbio->bi_end_io) in sync_request_write()
2491 if (r10_bio->devs[i].bio->bi_end_io != end_sync_write in sync_request_write()
2492 && r10_bio->devs[i].bio != fbio) in sync_request_write()
2494 d = r10_bio->devs[i].devnum; in sync_request_write()
2495 atomic_inc(&r10_bio->remaining); in sync_request_write()
2496 md_sync_acct(conf->mirrors[d].replacement->bdev, in sync_request_write()
2502 if (atomic_dec_and_test(&r10_bio->remaining)) { in sync_request_write()
2503 md_done_sync(mddev, r10_bio->sectors, 1); in sync_request_write()
2511 * We recover all non-is_sync drives by finding the virtual address of
2513 * There is a separate r10_bio for each non-in_sync drive.
2521 * We repeat the read in smaller page-sized sections. in fix_recovery_read_error()
2527 struct mddev *mddev = r10_bio->mddev; in fix_recovery_read_error()
2528 struct r10conf *conf = mddev->private; in fix_recovery_read_error()
2529 struct bio *bio = r10_bio->devs[0].bio; in fix_recovery_read_error()
2531 int sectors = r10_bio->sectors; in fix_recovery_read_error()
2533 int dr = r10_bio->devs[0].devnum; in fix_recovery_read_error()
2534 int dw = r10_bio->devs[1].devnum; in fix_recovery_read_error()
2535 struct page **pages = get_resync_pages(bio)->pages; in fix_recovery_read_error()
2546 rdev = conf->mirrors[dr].rdev; in fix_recovery_read_error()
2547 addr = r10_bio->devs[0].addr + sect, in fix_recovery_read_error()
2554 rdev = conf->mirrors[dw].rdev; in fix_recovery_read_error()
2555 addr = r10_bio->devs[1].addr + sect; in fix_recovery_read_error()
2562 set_bit(WriteErrorSeen, &rdev->flags); in fix_recovery_read_error()
2564 &rdev->flags)) in fix_recovery_read_error()
2566 &rdev->mddev->recovery); in fix_recovery_read_error()
2570 /* We don't worry if we cannot set a bad block - in fix_recovery_read_error()
2576 if (rdev != conf->mirrors[dw].rdev) { in fix_recovery_read_error()
2578 struct md_rdev *rdev2 = conf->mirrors[dw].rdev; in fix_recovery_read_error()
2579 addr = r10_bio->devs[1].addr + sect; in fix_recovery_read_error()
2586 conf->mirrors[dw].recovery_disabled in fix_recovery_read_error()
2587 = mddev->recovery_disabled; in fix_recovery_read_error()
2589 &mddev->recovery); in fix_recovery_read_error()
2595 sectors -= s; in fix_recovery_read_error()
2603 struct r10conf *conf = mddev->private; in recovery_request_write()
2605 struct bio *wbio = r10_bio->devs[1].bio; in recovery_request_write()
2606 struct bio *wbio2 = r10_bio->devs[1].repl_bio; in recovery_request_write()
2608 /* Need to test wbio2->bi_end_io before we call in recovery_request_write()
2612 if (wbio2 && !wbio2->bi_end_io) in recovery_request_write()
2615 if (!test_bit(R10BIO_Uptodate, &r10_bio->state)) { in recovery_request_write()
2617 if (wbio->bi_end_io) in recovery_request_write()
2628 d = r10_bio->devs[1].devnum; in recovery_request_write()
2629 if (wbio->bi_end_io) { in recovery_request_write()
2630 atomic_inc(&conf->mirrors[d].rdev->nr_pending); in recovery_request_write()
2631 md_sync_acct(conf->mirrors[d].rdev->bdev, bio_sectors(wbio)); in recovery_request_write()
2635 atomic_inc(&conf->mirrors[d].replacement->nr_pending); in recovery_request_write()
2636 md_sync_acct(conf->mirrors[d].replacement->bdev, in recovery_request_write()
2652 unsigned int read_errors = atomic_read(&rdev->read_errors); in check_decay_read_errors()
2656 if (rdev->last_read_error == 0) { in check_decay_read_errors()
2658 rdev->last_read_error = cur_time_mon; in check_decay_read_errors()
2662 hours_since_last = (long)(cur_time_mon - in check_decay_read_errors()
2663 rdev->last_read_error) / 3600; in check_decay_read_errors()
2665 rdev->last_read_error = cur_time_mon; in check_decay_read_errors()
2673 atomic_set(&rdev->read_errors, 0); in check_decay_read_errors()
2675 atomic_set(&rdev->read_errors, read_errors >> hours_since_last); in check_decay_read_errors()
2685 && (op == REQ_OP_READ || test_bit(WriteErrorSeen, &rdev->flags))) in r10_sync_page_io()
2686 return -1; in r10_sync_page_io()
2691 set_bit(WriteErrorSeen, &rdev->flags); in r10_sync_page_io()
2692 if (!test_and_set_bit(WantReplacement, &rdev->flags)) in r10_sync_page_io()
2694 &rdev->mddev->recovery); in r10_sync_page_io()
2696 /* need to record an error - either for the block or the device */ in r10_sync_page_io()
2698 md_error(rdev->mddev, rdev); in r10_sync_page_io()
2712 int sect = 0; /* Offset from r10_bio->sector */ in fix_read_error()
2713 int sectors = r10_bio->sectors, slot = r10_bio->read_slot; in fix_read_error()
2715 int max_read_errors = atomic_read(&mddev->max_corr_read_errors); in fix_read_error()
2716 int d = r10_bio->devs[slot].devnum; in fix_read_error()
2721 rdev = conf->mirrors[d].rdev; in fix_read_error()
2723 if (test_bit(Faulty, &rdev->flags)) in fix_read_error()
2729 atomic_inc(&rdev->read_errors); in fix_read_error()
2730 if (atomic_read(&rdev->read_errors) > max_read_errors) { in fix_read_error()
2732 mdname(mddev), rdev->bdev, in fix_read_error()
2733 atomic_read(&rdev->read_errors), max_read_errors); in fix_read_error()
2735 mdname(mddev), rdev->bdev); in fix_read_error()
2737 r10_bio->devs[slot].bio = IO_BLOCKED; in fix_read_error()
2755 d = r10_bio->devs[sl].devnum; in fix_read_error()
2756 rdev = rcu_dereference(conf->mirrors[d].rdev); in fix_read_error()
2758 test_bit(In_sync, &rdev->flags) && in fix_read_error()
2759 !test_bit(Faulty, &rdev->flags) && in fix_read_error()
2760 is_badblock(rdev, r10_bio->devs[sl].addr + sect, s, in fix_read_error()
2762 atomic_inc(&rdev->nr_pending); in fix_read_error()
2765 r10_bio->devs[sl].addr + in fix_read_error()
2768 conf->tmppage, in fix_read_error()
2776 if (sl == conf->copies) in fix_read_error()
2786 int dn = r10_bio->devs[slot].devnum; in fix_read_error()
2787 rdev = conf->mirrors[dn].rdev; in fix_read_error()
2791 r10_bio->devs[slot].addr in fix_read_error()
2795 r10_bio->devs[slot].bio in fix_read_error()
2802 /* write it back and re-read */ in fix_read_error()
2806 sl = conf->copies; in fix_read_error()
2807 sl--; in fix_read_error()
2808 d = r10_bio->devs[sl].devnum; in fix_read_error()
2809 rdev = rcu_dereference(conf->mirrors[d].rdev); in fix_read_error()
2811 test_bit(Faulty, &rdev->flags) || in fix_read_error()
2812 !test_bit(In_sync, &rdev->flags)) in fix_read_error()
2815 atomic_inc(&rdev->nr_pending); in fix_read_error()
2818 r10_bio->devs[sl].addr + in fix_read_error()
2820 s, conf->tmppage, REQ_OP_WRITE) in fix_read_error()
2829 rdev->bdev); in fix_read_error()
2832 rdev->bdev); in fix_read_error()
2840 sl = conf->copies; in fix_read_error()
2841 sl--; in fix_read_error()
2842 d = r10_bio->devs[sl].devnum; in fix_read_error()
2843 rdev = rcu_dereference(conf->mirrors[d].rdev); in fix_read_error()
2845 test_bit(Faulty, &rdev->flags) || in fix_read_error()
2846 !test_bit(In_sync, &rdev->flags)) in fix_read_error()
2849 atomic_inc(&rdev->nr_pending); in fix_read_error()
2852 r10_bio->devs[sl].addr + in fix_read_error()
2854 s, conf->tmppage, REQ_OP_READ)) { in fix_read_error()
2862 rdev->bdev); in fix_read_error()
2865 rdev->bdev); in fix_read_error()
2873 rdev->bdev); in fix_read_error()
2874 atomic_add(s, &rdev->corrected_errors); in fix_read_error()
2882 sectors -= s; in fix_read_error()
2889 struct bio *bio = r10_bio->master_bio; in narrow_write_error()
2890 struct mddev *mddev = r10_bio->mddev; in narrow_write_error()
2891 struct r10conf *conf = mddev->private; in narrow_write_error()
2892 struct md_rdev *rdev = conf->mirrors[r10_bio->devs[i].devnum].rdev; in narrow_write_error()
2907 int sect_to_write = r10_bio->sectors; in narrow_write_error()
2910 if (rdev->badblocks.shift < 0) in narrow_write_error()
2913 block_sectors = roundup(1 << rdev->badblocks.shift, in narrow_write_error()
2914 bdev_logical_block_size(rdev->bdev) >> 9); in narrow_write_error()
2915 sector = r10_bio->sector; in narrow_write_error()
2916 sectors = ((r10_bio->sector + block_sectors) in narrow_write_error()
2917 & ~(sector_t)(block_sectors - 1)) in narrow_write_error()
2918 - sector; in narrow_write_error()
2926 wbio = bio_alloc_clone(rdev->bdev, bio, GFP_NOIO, in narrow_write_error()
2927 &mddev->bio_set); in narrow_write_error()
2928 bio_trim(wbio, sector - bio->bi_iter.bi_sector, sectors); in narrow_write_error()
2929 wsector = r10_bio->devs[i].addr + (sector - r10_bio->sector); in narrow_write_error()
2930 wbio->bi_iter.bi_sector = wsector + in narrow_write_error()
2932 wbio->bi_opf = REQ_OP_WRITE; in narrow_write_error()
2941 sect_to_write -= sectors; in narrow_write_error()
2950 int slot = r10_bio->read_slot; in handle_read_error()
2952 struct r10conf *conf = mddev->private; in handle_read_error()
2953 struct md_rdev *rdev = r10_bio->devs[slot].rdev; in handle_read_error()
2958 * other devices. When we find one, we re-write in handle_read_error()
2963 bio = r10_bio->devs[slot].bio; in handle_read_error()
2965 r10_bio->devs[slot].bio = NULL; in handle_read_error()
2967 if (mddev->ro) in handle_read_error()
2968 r10_bio->devs[slot].bio = IO_BLOCKED; in handle_read_error()
2969 else if (!test_bit(FailFast, &rdev->flags)) { in handle_read_error()
2977 r10_bio->state = 0; in handle_read_error()
2978 raid10_read_request(mddev, r10_bio->master_bio, r10_bio, false); in handle_read_error()
2980 * allow_barrier after re-submit to ensure no sync io in handle_read_error()
2997 if (test_bit(R10BIO_IsSync, &r10_bio->state) || in handle_write_completed()
2998 test_bit(R10BIO_IsRecover, &r10_bio->state)) { in handle_write_completed()
2999 for (m = 0; m < conf->copies; m++) { in handle_write_completed()
3000 int dev = r10_bio->devs[m].devnum; in handle_write_completed()
3001 rdev = conf->mirrors[dev].rdev; in handle_write_completed()
3002 if (r10_bio->devs[m].bio == NULL || in handle_write_completed()
3003 r10_bio->devs[m].bio->bi_end_io == NULL) in handle_write_completed()
3005 if (!r10_bio->devs[m].bio->bi_status) { in handle_write_completed()
3008 r10_bio->devs[m].addr, in handle_write_completed()
3009 r10_bio->sectors, 0); in handle_write_completed()
3013 r10_bio->devs[m].addr, in handle_write_completed()
3014 r10_bio->sectors, 0)) in handle_write_completed()
3015 md_error(conf->mddev, rdev); in handle_write_completed()
3017 rdev = conf->mirrors[dev].replacement; in handle_write_completed()
3018 if (r10_bio->devs[m].repl_bio == NULL || in handle_write_completed()
3019 r10_bio->devs[m].repl_bio->bi_end_io == NULL) in handle_write_completed()
3022 if (!r10_bio->devs[m].repl_bio->bi_status) { in handle_write_completed()
3025 r10_bio->devs[m].addr, in handle_write_completed()
3026 r10_bio->sectors, 0); in handle_write_completed()
3030 r10_bio->devs[m].addr, in handle_write_completed()
3031 r10_bio->sectors, 0)) in handle_write_completed()
3032 md_error(conf->mddev, rdev); in handle_write_completed()
3038 for (m = 0; m < conf->copies; m++) { in handle_write_completed()
3039 int dev = r10_bio->devs[m].devnum; in handle_write_completed()
3040 struct bio *bio = r10_bio->devs[m].bio; in handle_write_completed()
3041 rdev = conf->mirrors[dev].rdev; in handle_write_completed()
3045 r10_bio->devs[m].addr, in handle_write_completed()
3046 r10_bio->sectors, 0); in handle_write_completed()
3047 rdev_dec_pending(rdev, conf->mddev); in handle_write_completed()
3048 } else if (bio != NULL && bio->bi_status) { in handle_write_completed()
3051 md_error(conf->mddev, rdev); in handle_write_completed()
3052 rdev_dec_pending(rdev, conf->mddev); in handle_write_completed()
3054 bio = r10_bio->devs[m].repl_bio; in handle_write_completed()
3055 rdev = conf->mirrors[dev].replacement; in handle_write_completed()
3059 r10_bio->devs[m].addr, in handle_write_completed()
3060 r10_bio->sectors, 0); in handle_write_completed()
3061 rdev_dec_pending(rdev, conf->mddev); in handle_write_completed()
3065 spin_lock_irq(&conf->device_lock); in handle_write_completed()
3066 list_add(&r10_bio->retry_list, &conf->bio_end_io_list); in handle_write_completed()
3067 conf->nr_queued++; in handle_write_completed()
3068 spin_unlock_irq(&conf->device_lock); in handle_write_completed()
3073 wake_up(&conf->wait_barrier); in handle_write_completed()
3074 md_wakeup_thread(conf->mddev->thread); in handle_write_completed()
3077 &r10_bio->state)) in handle_write_completed()
3086 struct mddev *mddev = thread->mddev; in raid10d()
3089 struct r10conf *conf = mddev->private; in raid10d()
3090 struct list_head *head = &conf->retry_list; in raid10d()
3095 if (!list_empty_careful(&conf->bio_end_io_list) && in raid10d()
3096 !test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags)) { in raid10d()
3098 spin_lock_irqsave(&conf->device_lock, flags); in raid10d()
3099 if (!test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags)) { in raid10d()
3100 while (!list_empty(&conf->bio_end_io_list)) { in raid10d()
3101 list_move(conf->bio_end_io_list.prev, &tmp); in raid10d()
3102 conf->nr_queued--; in raid10d()
3105 spin_unlock_irqrestore(&conf->device_lock, flags); in raid10d()
3109 list_del(&r10_bio->retry_list); in raid10d()
3112 &r10_bio->state)) in raid10d()
3123 spin_lock_irqsave(&conf->device_lock, flags); in raid10d()
3125 spin_unlock_irqrestore(&conf->device_lock, flags); in raid10d()
3128 r10_bio = list_entry(head->prev, struct r10bio, retry_list); in raid10d()
3129 list_del(head->prev); in raid10d()
3130 conf->nr_queued--; in raid10d()
3131 spin_unlock_irqrestore(&conf->device_lock, flags); in raid10d()
3133 mddev = r10_bio->mddev; in raid10d()
3134 conf = mddev->private; in raid10d()
3135 if (test_bit(R10BIO_MadeGood, &r10_bio->state) || in raid10d()
3136 test_bit(R10BIO_WriteError, &r10_bio->state)) in raid10d()
3138 else if (test_bit(R10BIO_IsReshape, &r10_bio->state)) in raid10d()
3140 else if (test_bit(R10BIO_IsSync, &r10_bio->state)) in raid10d()
3142 else if (test_bit(R10BIO_IsRecover, &r10_bio->state)) in raid10d()
3144 else if (test_bit(R10BIO_ReadError, &r10_bio->state)) in raid10d()
3150 if (mddev->sb_flags & ~(1<<MD_SB_CHANGE_PENDING)) in raid10d()
3161 BUG_ON(mempool_initialized(&conf->r10buf_pool)); in init_resync()
3162 conf->have_replacement = 0; in init_resync()
3163 for (i = 0; i < conf->geo.raid_disks; i++) in init_resync()
3164 if (conf->mirrors[i].replacement) in init_resync()
3165 conf->have_replacement = 1; in init_resync()
3166 ret = mempool_init(&conf->r10buf_pool, buffs, in init_resync()
3170 conf->next_resync = 0; in init_resync()
3176 struct r10bio *r10bio = mempool_alloc(&conf->r10buf_pool, GFP_NOIO); in raid10_alloc_init_r10buf()
3182 if (test_bit(MD_RECOVERY_SYNC, &conf->mddev->recovery) || in raid10_alloc_init_r10buf()
3183 test_bit(MD_RECOVERY_RESHAPE, &conf->mddev->recovery)) in raid10_alloc_init_r10buf()
3184 nalloc = conf->copies; /* resync */ in raid10_alloc_init_r10buf()
3189 bio = r10bio->devs[i].bio; in raid10_alloc_init_r10buf()
3190 rp = bio->bi_private; in raid10_alloc_init_r10buf()
3192 bio->bi_private = rp; in raid10_alloc_init_r10buf()
3193 bio = r10bio->devs[i].repl_bio; in raid10_alloc_init_r10buf()
3195 rp = bio->bi_private; in raid10_alloc_init_r10buf()
3197 bio->bi_private = rp; in raid10_alloc_init_r10buf()
3224 chunks = conf->geo.raid_disks / conf->geo.near_copies; in raid10_set_cluster_sync_high()
3225 if (conf->geo.raid_disks % conf->geo.near_copies == 0) in raid10_set_cluster_sync_high()
3229 window_size = (chunks + extra_chunk) * conf->mddev->chunk_sectors; in raid10_set_cluster_sync_high()
3237 conf->cluster_sync_high = conf->cluster_sync_low + window_size; in raid10_set_cluster_sync_high()
3243 * We need to make sure that no normal I/O request - particularly write
3244 * requests - conflict with active sync requests.
3250 * We differentiate by looking at MD_RECOVERY_SYNC in mddev->recovery.
3253 * and update if there are differences. If only one copy is live,
3256 * value for each non-in_sync drive, and over-write.
3259 * given address, one for each out-of-sync device. We model this by allocating
3260 * a number of r10_bio structures, one for each out-of-sync device.
3266 * This link is counted in ->remaining. When the r10_bio that points to NULL
3275 struct r10conf *conf = mddev->private; in raid10_sync_request()
3284 sector_t chunk_mask = conf->geo.chunk_mask; in raid10_sync_request()
3286 int error_disk = -1; in raid10_sync_request()
3292 if (mddev->bitmap == NULL && in raid10_sync_request()
3293 mddev->recovery_cp == MaxSector && in raid10_sync_request()
3294 mddev->reshape_position == MaxSector && in raid10_sync_request()
3295 !test_bit(MD_RECOVERY_SYNC, &mddev->recovery) && in raid10_sync_request()
3296 !test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery) && in raid10_sync_request()
3297 !test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) && in raid10_sync_request()
3298 conf->fullsync == 0) { in raid10_sync_request()
3300 return mddev->dev_sectors - sector_nr; in raid10_sync_request()
3303 if (!mempool_initialized(&conf->r10buf_pool)) in raid10_sync_request()
3308 max_sector = mddev->dev_sectors; in raid10_sync_request()
3309 if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) || in raid10_sync_request()
3310 test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) in raid10_sync_request()
3311 max_sector = mddev->resync_max_sectors; in raid10_sync_request()
3313 conf->cluster_sync_low = 0; in raid10_sync_request()
3314 conf->cluster_sync_high = 0; in raid10_sync_request()
3321 * mddev->curr_resync, but for recovery, in raid10_sync_request()
3325 if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) { in raid10_sync_request()
3331 if (mddev->curr_resync < max_sector) { /* aborted */ in raid10_sync_request()
3332 if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) in raid10_sync_request()
3333 md_bitmap_end_sync(mddev->bitmap, mddev->curr_resync, in raid10_sync_request()
3335 else for (i = 0; i < conf->geo.raid_disks; i++) { in raid10_sync_request()
3337 raid10_find_virt(conf, mddev->curr_resync, i); in raid10_sync_request()
3338 md_bitmap_end_sync(mddev->bitmap, sect, in raid10_sync_request()
3343 if ((!mddev->bitmap || conf->fullsync) in raid10_sync_request()
3344 && conf->have_replacement in raid10_sync_request()
3345 && test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) { in raid10_sync_request()
3350 for (i = 0; i < conf->geo.raid_disks; i++) { in raid10_sync_request()
3352 rcu_dereference(conf->mirrors[i].replacement); in raid10_sync_request()
3354 rdev->recovery_offset = MaxSector; in raid10_sync_request()
3358 conf->fullsync = 0; in raid10_sync_request()
3360 md_bitmap_close_sync(mddev->bitmap); in raid10_sync_request()
3366 if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) in raid10_sync_request()
3369 if (chunks_skipped >= conf->geo.raid_disks) { in raid10_sync_request()
3371 test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ? "resync" : "recovery"); in raid10_sync_request()
3373 !test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) { in raid10_sync_request()
3378 conf->mirrors[error_disk].recovery_disabled = in raid10_sync_request()
3379 mddev->recovery_disabled; in raid10_sync_request()
3387 return (max_sector - sector_nr) + sectors_skipped; in raid10_sync_request()
3390 if (max_sector > mddev->resync_max) in raid10_sync_request()
3391 max_sector = mddev->resync_max; /* Don't do IO beyond here */ in raid10_sync_request()
3393 /* make sure whole request will fit in a chunk - if chunks in raid10_sync_request()
3396 if (conf->geo.near_copies < conf->geo.raid_disks && in raid10_sync_request()
3401 * If there is non-resync activity waiting for a turn, then let it in raid10_sync_request()
3404 if (conf->nr_waiting) in raid10_sync_request()
3417 /* First, we decide what to do and set ->bi_end_io in raid10_sync_request()
3422 max_sync = RESYNC_PAGES << (PAGE_SHIFT-9); in raid10_sync_request()
3423 if (!test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) { in raid10_sync_request()
3428 for (i = 0 ; i < conf->geo.raid_disks; i++) { in raid10_sync_request()
3434 struct raid10_info *mirror = &conf->mirrors[i]; in raid10_sync_request()
3438 mrdev = rcu_dereference(mirror->rdev); in raid10_sync_request()
3439 mreplace = rcu_dereference(mirror->replacement); in raid10_sync_request()
3441 if (mrdev && (test_bit(Faulty, &mrdev->flags) || in raid10_sync_request()
3442 test_bit(In_sync, &mrdev->flags))) in raid10_sync_request()
3444 if (mreplace && test_bit(Faulty, &mreplace->flags)) in raid10_sync_request()
3456 if (sect >= mddev->resync_max_sectors) { in raid10_sync_request()
3457 /* last stripe is not complete - don't in raid10_sync_request()
3467 must_sync = md_bitmap_start_sync(mddev->bitmap, sect, in raid10_sync_request()
3473 !conf->fullsync) { in raid10_sync_request()
3477 chunks_skipped = -1; in raid10_sync_request()
3482 atomic_inc(&mrdev->nr_pending); in raid10_sync_request()
3484 atomic_inc(&mreplace->nr_pending); in raid10_sync_request()
3488 r10_bio->state = 0; in raid10_sync_request()
3490 atomic_set(&r10_bio->remaining, 0); in raid10_sync_request()
3492 r10_bio->master_bio = (struct bio*)rb2; in raid10_sync_request()
3494 atomic_inc(&rb2->remaining); in raid10_sync_request()
3495 r10_bio->mddev = mddev; in raid10_sync_request()
3496 set_bit(R10BIO_IsRecover, &r10_bio->state); in raid10_sync_request()
3497 r10_bio->sector = sect; in raid10_sync_request()
3505 for (j = 0; j < conf->geo.raid_disks; j++) { in raid10_sync_request()
3507 conf->mirrors[j].rdev); in raid10_sync_request()
3508 if (rdev == NULL || test_bit(Faulty, &rdev->flags)) { in raid10_sync_request()
3514 must_sync = md_bitmap_start_sync(mddev->bitmap, sect, in raid10_sync_request()
3518 for (j=0; j<conf->copies;j++) { in raid10_sync_request()
3520 int d = r10_bio->devs[j].devnum; in raid10_sync_request()
3523 rcu_dereference(conf->mirrors[d].rdev); in raid10_sync_request()
3527 !test_bit(In_sync, &rdev->flags)) in raid10_sync_request()
3531 sector = r10_bio->devs[j].addr; in raid10_sync_request()
3536 max_sync = first_bad - sector; in raid10_sync_request()
3538 bad_sectors -= (sector in raid10_sync_request()
3539 - first_bad); in raid10_sync_request()
3545 bio = r10_bio->devs[0].bio; in raid10_sync_request()
3546 bio->bi_next = biolist; in raid10_sync_request()
3548 bio->bi_end_io = end_sync_read; in raid10_sync_request()
3549 bio->bi_opf = REQ_OP_READ; in raid10_sync_request()
3550 if (test_bit(FailFast, &rdev->flags)) in raid10_sync_request()
3551 bio->bi_opf |= MD_FAILFAST; in raid10_sync_request()
3552 from_addr = r10_bio->devs[j].addr; in raid10_sync_request()
3553 bio->bi_iter.bi_sector = from_addr + in raid10_sync_request()
3554 rdev->data_offset; in raid10_sync_request()
3555 bio_set_dev(bio, rdev->bdev); in raid10_sync_request()
3556 atomic_inc(&rdev->nr_pending); in raid10_sync_request()
3559 for (k=0; k<conf->copies; k++) in raid10_sync_request()
3560 if (r10_bio->devs[k].devnum == i) in raid10_sync_request()
3562 BUG_ON(k == conf->copies); in raid10_sync_request()
3563 to_addr = r10_bio->devs[k].addr; in raid10_sync_request()
3564 r10_bio->devs[0].devnum = d; in raid10_sync_request()
3565 r10_bio->devs[0].addr = from_addr; in raid10_sync_request()
3566 r10_bio->devs[1].devnum = i; in raid10_sync_request()
3567 r10_bio->devs[1].addr = to_addr; in raid10_sync_request()
3570 bio = r10_bio->devs[1].bio; in raid10_sync_request()
3571 bio->bi_next = biolist; in raid10_sync_request()
3573 bio->bi_end_io = end_sync_write; in raid10_sync_request()
3574 bio->bi_opf = REQ_OP_WRITE; in raid10_sync_request()
3575 bio->bi_iter.bi_sector = to_addr in raid10_sync_request()
3576 + mrdev->data_offset; in raid10_sync_request()
3577 bio_set_dev(bio, mrdev->bdev); in raid10_sync_request()
3578 atomic_inc(&r10_bio->remaining); in raid10_sync_request()
3580 r10_bio->devs[1].bio->bi_end_io = NULL; in raid10_sync_request()
3583 bio = r10_bio->devs[1].repl_bio; in raid10_sync_request()
3585 bio->bi_end_io = NULL; in raid10_sync_request()
3592 bio->bi_next = biolist; in raid10_sync_request()
3594 bio->bi_end_io = end_sync_write; in raid10_sync_request()
3595 bio->bi_opf = REQ_OP_WRITE; in raid10_sync_request()
3596 bio->bi_iter.bi_sector = to_addr + in raid10_sync_request()
3597 mreplace->data_offset; in raid10_sync_request()
3598 bio_set_dev(bio, mreplace->bdev); in raid10_sync_request()
3599 atomic_inc(&r10_bio->remaining); in raid10_sync_request()
3603 if (j == conf->copies) { in raid10_sync_request()
3611 for (k = 0; k < conf->copies; k++) in raid10_sync_request()
3612 if (r10_bio->devs[k].devnum == i) in raid10_sync_request()
3615 &mrdev->flags) in raid10_sync_request()
3618 r10_bio->devs[k].addr, in raid10_sync_request()
3624 r10_bio->devs[k].addr, in raid10_sync_request()
3630 &mddev->recovery)) in raid10_sync_request()
3633 mirror->recovery_disabled in raid10_sync_request()
3634 = mddev->recovery_disabled; in raid10_sync_request()
3640 atomic_dec(&rb2->remaining); in raid10_sync_request()
3652 if (r10_bio->devs[0].bio->bi_opf & MD_FAILFAST) { in raid10_sync_request()
3658 for (; j < conf->copies; j++) { in raid10_sync_request()
3659 int d = r10_bio->devs[j].devnum; in raid10_sync_request()
3660 if (conf->mirrors[d].rdev && in raid10_sync_request()
3662 &conf->mirrors[d].rdev->flags)) in raid10_sync_request()
3666 r10_bio->devs[0].bio->bi_opf in raid10_sync_request()
3673 r10_bio = (struct r10bio*) rb2->master_bio; in raid10_sync_request()
3674 rb2->master_bio = NULL; in raid10_sync_request()
3684 * Since curr_resync_completed could probably not update in in raid10_sync_request()
3690 md_bitmap_cond_end_sync(mddev->bitmap, sector_nr, in raid10_sync_request()
3692 (sector_nr + 2 * RESYNC_SECTORS > conf->cluster_sync_high)); in raid10_sync_request()
3694 if (!md_bitmap_start_sync(mddev->bitmap, sector_nr, in raid10_sync_request()
3695 &sync_blocks, mddev->degraded) && in raid10_sync_request()
3696 !conf->fullsync && !test_bit(MD_RECOVERY_REQUESTED, in raid10_sync_request()
3697 &mddev->recovery)) { in raid10_sync_request()
3705 r10_bio->state = 0; in raid10_sync_request()
3707 r10_bio->mddev = mddev; in raid10_sync_request()
3708 atomic_set(&r10_bio->remaining, 0); in raid10_sync_request()
3710 conf->next_resync = sector_nr; in raid10_sync_request()
3712 r10_bio->master_bio = NULL; in raid10_sync_request()
3713 r10_bio->sector = sector_nr; in raid10_sync_request()
3714 set_bit(R10BIO_IsSync, &r10_bio->state); in raid10_sync_request()
3716 r10_bio->sectors = (sector_nr | chunk_mask) - sector_nr + 1; in raid10_sync_request()
3718 for (i = 0; i < conf->copies; i++) { in raid10_sync_request()
3719 int d = r10_bio->devs[i].devnum; in raid10_sync_request()
3724 if (r10_bio->devs[i].repl_bio) in raid10_sync_request()
3725 r10_bio->devs[i].repl_bio->bi_end_io = NULL; in raid10_sync_request()
3727 bio = r10_bio->devs[i].bio; in raid10_sync_request()
3728 bio->bi_status = BLK_STS_IOERR; in raid10_sync_request()
3730 rdev = rcu_dereference(conf->mirrors[d].rdev); in raid10_sync_request()
3731 if (rdev == NULL || test_bit(Faulty, &rdev->flags)) { in raid10_sync_request()
3735 sector = r10_bio->devs[i].addr; in raid10_sync_request()
3739 max_sync = first_bad - sector; in raid10_sync_request()
3741 bad_sectors -= (sector - first_bad); in raid10_sync_request()
3748 atomic_inc(&rdev->nr_pending); in raid10_sync_request()
3749 atomic_inc(&r10_bio->remaining); in raid10_sync_request()
3750 bio->bi_next = biolist; in raid10_sync_request()
3752 bio->bi_end_io = end_sync_read; in raid10_sync_request()
3753 bio->bi_opf = REQ_OP_READ; in raid10_sync_request()
3754 if (test_bit(FailFast, &rdev->flags)) in raid10_sync_request()
3755 bio->bi_opf |= MD_FAILFAST; in raid10_sync_request()
3756 bio->bi_iter.bi_sector = sector + rdev->data_offset; in raid10_sync_request()
3757 bio_set_dev(bio, rdev->bdev); in raid10_sync_request()
3760 rdev = rcu_dereference(conf->mirrors[d].replacement); in raid10_sync_request()
3761 if (rdev == NULL || test_bit(Faulty, &rdev->flags)) { in raid10_sync_request()
3765 atomic_inc(&rdev->nr_pending); in raid10_sync_request()
3768 bio = r10_bio->devs[i].repl_bio; in raid10_sync_request()
3769 bio->bi_status = BLK_STS_IOERR; in raid10_sync_request()
3771 sector = r10_bio->devs[i].addr; in raid10_sync_request()
3772 bio->bi_next = biolist; in raid10_sync_request()
3774 bio->bi_end_io = end_sync_write; in raid10_sync_request()
3775 bio->bi_opf = REQ_OP_WRITE; in raid10_sync_request()
3776 if (test_bit(FailFast, &rdev->flags)) in raid10_sync_request()
3777 bio->bi_opf |= MD_FAILFAST; in raid10_sync_request()
3778 bio->bi_iter.bi_sector = sector + rdev->data_offset; in raid10_sync_request()
3779 bio_set_dev(bio, rdev->bdev); in raid10_sync_request()
3785 for (i=0; i<conf->copies; i++) { in raid10_sync_request()
3786 int d = r10_bio->devs[i].devnum; in raid10_sync_request()
3787 if (r10_bio->devs[i].bio->bi_end_io) in raid10_sync_request()
3788 rdev_dec_pending(conf->mirrors[d].rdev, in raid10_sync_request()
3790 if (r10_bio->devs[i].repl_bio && in raid10_sync_request()
3791 r10_bio->devs[i].repl_bio->bi_end_io) in raid10_sync_request()
3793 conf->mirrors[d].replacement, in raid10_sync_request()
3809 len = (max_sector - sector_nr) << 9; in raid10_sync_request()
3812 for (bio= biolist ; bio ; bio=bio->bi_next) { in raid10_sync_request()
3816 bio->bi_status = BLK_STS_RESOURCE; in raid10_sync_request()
3824 r10_bio->sectors = nr_sectors; in raid10_sync_request()
3827 test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) { in raid10_sync_request()
3829 if (conf->cluster_sync_high < sector_nr + nr_sectors) { in raid10_sync_request()
3830 conf->cluster_sync_low = mddev->curr_resync_completed; in raid10_sync_request()
3833 md_cluster_ops->resync_info_update(mddev, in raid10_sync_request()
3834 conf->cluster_sync_low, in raid10_sync_request()
3835 conf->cluster_sync_high); in raid10_sync_request()
3842 for (i = 0; i < conf->geo.raid_disks; i++) { in raid10_sync_request()
3850 if (conf->cluster_sync_high < sect_va1 + nr_sectors) { in raid10_sync_request()
3857 mddev->curr_resync_completed, i); in raid10_sync_request()
3859 if (conf->cluster_sync_low == 0 || in raid10_sync_request()
3860 conf->cluster_sync_low > sect_va2) in raid10_sync_request()
3861 conf->cluster_sync_low = sect_va2; in raid10_sync_request()
3866 md_cluster_ops->resync_info_update(mddev, in raid10_sync_request()
3867 conf->cluster_sync_low, in raid10_sync_request()
3868 conf->cluster_sync_high); in raid10_sync_request()
3874 biolist = biolist->bi_next; in raid10_sync_request()
3876 bio->bi_next = NULL; in raid10_sync_request()
3878 r10_bio->sectors = nr_sectors; in raid10_sync_request()
3880 if (bio->bi_end_io == end_sync_read) { in raid10_sync_request()
3882 bio->bi_status = 0; in raid10_sync_request()
3895 /* There is nowhere to write, so all non-sync in raid10_sync_request()
3902 sectors_skipped += (max_sector - sector_nr); in raid10_sync_request()
3912 struct r10conf *conf = mddev->private; in raid10_size()
3915 raid_disks = min(conf->geo.raid_disks, in raid10_size()
3916 conf->prev.raid_disks); in raid10_size()
3918 sectors = conf->dev_sectors; in raid10_size()
3920 size = sectors >> conf->geo.chunk_shift; in raid10_size()
3921 sector_div(size, conf->geo.far_copies); in raid10_size()
3923 sector_div(size, conf->geo.near_copies); in raid10_size()
3925 return size << conf->geo.chunk_shift; in raid10_size()
3930 /* Calculate the number of sectors-per-device that will in calc_sectors()
3931 * actually be used, and set conf->dev_sectors and in calc_sectors()
3932 * conf->stride in calc_sectors()
3935 size = size >> conf->geo.chunk_shift; in calc_sectors()
3936 sector_div(size, conf->geo.far_copies); in calc_sectors()
3937 size = size * conf->geo.raid_disks; in calc_sectors()
3938 sector_div(size, conf->geo.near_copies); in calc_sectors()
3941 size = size * conf->copies; in calc_sectors()
3946 size = DIV_ROUND_UP_SECTOR_T(size, conf->geo.raid_disks); in calc_sectors()
3948 conf->dev_sectors = size << conf->geo.chunk_shift; in calc_sectors()
3950 if (conf->geo.far_offset) in calc_sectors()
3951 conf->geo.stride = 1 << conf->geo.chunk_shift; in calc_sectors()
3953 sector_div(size, conf->geo.far_copies); in calc_sectors()
3954 conf->geo.stride = size << conf->geo.chunk_shift; in calc_sectors()
3961 int nc, fc, fo; in setup_geo() local
3965 layout = mddev->layout; in setup_geo()
3966 chunk = mddev->chunk_sectors; in setup_geo()
3967 disks = mddev->raid_disks - mddev->delta_disks; in setup_geo()
3970 layout = mddev->new_layout; in setup_geo()
3971 chunk = mddev->new_chunk_sectors; in setup_geo()
3972 disks = mddev->raid_disks; in setup_geo()
3975 case geo_start: /* new when starting reshape - raid_disks not in setup_geo()
3977 layout = mddev->new_layout; in setup_geo()
3978 chunk = mddev->new_chunk_sectors; in setup_geo()
3979 disks = mddev->raid_disks + mddev->delta_disks; in setup_geo()
3983 return -1; in setup_geo()
3986 return -2; in setup_geo()
3988 fc = (layout >> 8) & 255; in setup_geo()
3990 geo->raid_disks = disks; in setup_geo()
3991 geo->near_copies = nc; in setup_geo()
3992 geo->far_copies = fc; in setup_geo()
3993 geo->far_offset = fo; in setup_geo()
3996 geo->far_set_size = disks; in setup_geo()
3998 case 1: /* "improved" layout which was buggy. Hopefully no-one is in setup_geo()
4000 geo->far_set_size = disks/fc; in setup_geo()
4001 WARN(geo->far_set_size < fc, in setup_geo()
4002 "This RAID10 layout does not provide data safety - please backup and create new array\n"); in setup_geo()
4005 geo->far_set_size = fc * nc; in setup_geo()
4008 return -1; in setup_geo()
4010 geo->chunk_mask = chunk - 1; in setup_geo()
4011 geo->chunk_shift = ffz(~chunk); in setup_geo()
4012 return nc*fc; in setup_geo()
4020 mempool_exit(&conf->r10bio_pool); in raid10_free_conf()
4021 kfree(conf->mirrors); in raid10_free_conf()
4022 kfree(conf->mirrors_old); in raid10_free_conf()
4023 kfree(conf->mirrors_new); in raid10_free_conf()
4024 safe_put_page(conf->tmppage); in raid10_free_conf()
4025 bioset_exit(&conf->bio_split); in raid10_free_conf()
4032 int err = -EINVAL; in setup_conf()
4038 if (copies == -2) { in setup_conf()
4044 if (copies < 2 || copies > mddev->raid_disks) { in setup_conf()
4046 mdname(mddev), mddev->new_layout); in setup_conf()
4050 err = -ENOMEM; in setup_conf()
4056 conf->mirrors = kcalloc(mddev->raid_disks + max(0, -mddev->delta_disks), in setup_conf()
4059 if (!conf->mirrors) in setup_conf()
4062 conf->tmppage = alloc_page(GFP_KERNEL); in setup_conf()
4063 if (!conf->tmppage) in setup_conf()
4066 conf->geo = geo; in setup_conf()
4067 conf->copies = copies; in setup_conf()
4068 err = mempool_init(&conf->r10bio_pool, NR_RAID_BIOS, r10bio_pool_alloc, in setup_conf()
4073 err = bioset_init(&conf->bio_split, BIO_POOL_SIZE, 0, 0); in setup_conf()
4077 calc_sectors(conf, mddev->dev_sectors); in setup_conf()
4078 if (mddev->reshape_position == MaxSector) { in setup_conf()
4079 conf->prev = conf->geo; in setup_conf()
4080 conf->reshape_progress = MaxSector; in setup_conf()
4082 if (setup_geo(&conf->prev, mddev, geo_old) != conf->copies) { in setup_conf()
4083 err = -EINVAL; in setup_conf()
4086 conf->reshape_progress = mddev->reshape_position; in setup_conf()
4087 if (conf->prev.far_offset) in setup_conf()
4088 conf->prev.stride = 1 << conf->prev.chunk_shift; in setup_conf()
4091 conf->prev.stride = conf->dev_sectors; in setup_conf()
4093 conf->reshape_safe = conf->reshape_progress; in setup_conf()
4094 spin_lock_init(&conf->device_lock); in setup_conf()
4095 INIT_LIST_HEAD(&conf->retry_list); in setup_conf()
4096 INIT_LIST_HEAD(&conf->bio_end_io_list); in setup_conf()
4098 seqlock_init(&conf->resync_lock); in setup_conf()
4099 init_waitqueue_head(&conf->wait_barrier); in setup_conf()
4100 atomic_set(&conf->nr_pending, 0); in setup_conf()
4102 err = -ENOMEM; in setup_conf()
4103 rcu_assign_pointer(conf->thread, in setup_conf()
4105 if (!conf->thread) in setup_conf()
4108 conf->mddev = mddev; in setup_conf()
4118 int raid_disks = conf->geo.raid_disks; in raid10_set_io_opt()
4120 if (!(conf->geo.raid_disks % conf->geo.near_copies)) in raid10_set_io_opt()
4121 raid_disks /= conf->geo.near_copies; in raid10_set_io_opt()
4122 blk_queue_io_opt(conf->mddev->queue, (conf->mddev->chunk_sectors << 9) * in raid10_set_io_opt()
4137 return -ENOMEM; in raid10_run()
4139 if (mddev->private == NULL) { in raid10_run()
4143 mddev->private = conf; in raid10_run()
4145 conf = mddev->private; in raid10_run()
4149 rcu_assign_pointer(mddev->thread, conf->thread); in raid10_run()
4150 rcu_assign_pointer(conf->thread, NULL); in raid10_run()
4152 if (mddev_is_clustered(conf->mddev)) { in raid10_run()
4153 int fc, fo; in raid10_run() local
4155 fc = (mddev->layout >> 8) & 255; in raid10_run()
4156 fo = mddev->layout & (1<<16); in raid10_run()
4157 if (fc > 1 || fo > 0) { in raid10_run()
4164 if (mddev->queue) { in raid10_run()
4165 blk_queue_max_write_zeroes_sectors(mddev->queue, 0); in raid10_run()
4166 blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9); in raid10_run()
4173 disk_idx = rdev->raid_disk; in raid10_run()
4176 if (disk_idx >= conf->geo.raid_disks && in raid10_run()
4177 disk_idx >= conf->prev.raid_disks) in raid10_run()
4179 disk = conf->mirrors + disk_idx; in raid10_run()
4181 if (test_bit(Replacement, &rdev->flags)) { in raid10_run()
4182 if (disk->replacement) in raid10_run()
4184 disk->replacement = rdev; in raid10_run()
4186 if (disk->rdev) in raid10_run()
4188 disk->rdev = rdev; in raid10_run()
4190 diff = (rdev->new_data_offset - rdev->data_offset); in raid10_run()
4191 if (!mddev->reshape_backwards) in raid10_run()
4192 diff = -diff; in raid10_run()
4198 if (mddev->gendisk) in raid10_run()
4199 disk_stack_limits(mddev->gendisk, rdev->bdev, in raid10_run()
4200 rdev->data_offset << 9); in raid10_run()
4202 disk->head_position = 0; in raid10_run()
4207 if (!enough(conf, -1)) { in raid10_run()
4213 if (conf->reshape_progress != MaxSector) { in raid10_run()
4215 if (conf->geo.far_copies != 1 && in raid10_run()
4216 conf->geo.far_offset == 0) in raid10_run()
4218 if (conf->prev.far_copies != 1 && in raid10_run()
4219 conf->prev.far_offset == 0) in raid10_run()
4223 mddev->degraded = 0; in raid10_run()
4225 i < conf->geo.raid_disks in raid10_run()
4226 || i < conf->prev.raid_disks; in raid10_run()
4229 disk = conf->mirrors + i; in raid10_run()
4231 if (!disk->rdev && disk->replacement) { in raid10_run()
4232 /* The replacement is all we have - use it */ in raid10_run()
4233 disk->rdev = disk->replacement; in raid10_run()
4234 disk->replacement = NULL; in raid10_run()
4235 clear_bit(Replacement, &disk->rdev->flags); in raid10_run()
4238 if (!disk->rdev || in raid10_run()
4239 !test_bit(In_sync, &disk->rdev->flags)) { in raid10_run()
4240 disk->head_position = 0; in raid10_run()
4241 mddev->degraded++; in raid10_run()
4242 if (disk->rdev && in raid10_run()
4243 disk->rdev->saved_raid_disk < 0) in raid10_run()
4244 conf->fullsync = 1; in raid10_run()
4247 if (disk->replacement && in raid10_run()
4248 !test_bit(In_sync, &disk->replacement->flags) && in raid10_run()
4249 disk->replacement->saved_raid_disk < 0) { in raid10_run()
4250 conf->fullsync = 1; in raid10_run()
4253 disk->recovery_disabled = mddev->recovery_disabled - 1; in raid10_run()
4256 if (mddev->recovery_cp != MaxSector) in raid10_run()
4257 pr_notice("md/raid10:%s: not clean -- starting background reconstruction\n", in raid10_run()
4260 mdname(mddev), conf->geo.raid_disks - mddev->degraded, in raid10_run()
4261 conf->geo.raid_disks); in raid10_run()
4265 mddev->dev_sectors = conf->dev_sectors; in raid10_run()
4268 mddev->resync_max_sectors = size; in raid10_run()
4269 set_bit(MD_FAILFAST_SUPPORTED, &mddev->flags); in raid10_run()
4274 if (conf->reshape_progress != MaxSector) { in raid10_run()
4277 before_length = ((1 << conf->prev.chunk_shift) * in raid10_run()
4278 conf->prev.far_copies); in raid10_run()
4279 after_length = ((1 << conf->geo.chunk_shift) * in raid10_run()
4280 conf->geo.far_copies); in raid10_run()
4287 conf->offset_diff = min_offset_diff; in raid10_run()
4289 clear_bit(MD_RECOVERY_SYNC, &mddev->recovery); in raid10_run()
4290 clear_bit(MD_RECOVERY_CHECK, &mddev->recovery); in raid10_run()
4291 set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery); in raid10_run()
4292 set_bit(MD_RECOVERY_RUNNING, &mddev->recovery); in raid10_run()
4293 rcu_assign_pointer(mddev->sync_thread, in raid10_run()
4295 if (!mddev->sync_thread) in raid10_run()
4302 md_unregister_thread(mddev, &mddev->thread); in raid10_run()
4304 mddev->private = NULL; in raid10_run()
4306 return -EIO; in raid10_run()
4316 struct r10conf *conf = mddev->private; in raid10_quiesce()
4338 struct r10conf *conf = mddev->private; in raid10_resize()
4341 if (mddev->reshape_position != MaxSector) in raid10_resize()
4342 return -EBUSY; in raid10_resize()
4344 if (conf->geo.far_copies > 1 && !conf->geo.far_offset) in raid10_resize()
4345 return -EINVAL; in raid10_resize()
4349 if (mddev->external_size && in raid10_resize()
4350 mddev->array_sectors > size) in raid10_resize()
4351 return -EINVAL; in raid10_resize()
4352 if (mddev->bitmap) { in raid10_resize()
4353 int ret = md_bitmap_resize(mddev->bitmap, size, 0, 0); in raid10_resize()
4358 if (sectors > mddev->dev_sectors && in raid10_resize()
4359 mddev->recovery_cp > oldsize) { in raid10_resize()
4360 mddev->recovery_cp = oldsize; in raid10_resize()
4361 set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); in raid10_resize()
4364 mddev->dev_sectors = conf->dev_sectors; in raid10_resize()
4365 mddev->resync_max_sectors = size; in raid10_resize()
4374 if (mddev->degraded > 0) { in raid10_takeover_raid0()
4377 return ERR_PTR(-EINVAL); in raid10_takeover_raid0()
4382 mddev->new_level = 10; in raid10_takeover_raid0()
4384 mddev->new_layout = (1<<8) + 2; in raid10_takeover_raid0()
4385 mddev->new_chunk_sectors = mddev->chunk_sectors; in raid10_takeover_raid0()
4386 mddev->delta_disks = mddev->raid_disks; in raid10_takeover_raid0()
4387 mddev->raid_disks *= 2; in raid10_takeover_raid0()
4389 mddev->recovery_cp = MaxSector; in raid10_takeover_raid0()
4390 mddev->dev_sectors = size; in raid10_takeover_raid0()
4395 if (rdev->raid_disk >= 0) { in raid10_takeover_raid0()
4396 rdev->new_raid_disk = rdev->raid_disk * 2; in raid10_takeover_raid0()
4397 rdev->sectors = size; in raid10_takeover_raid0()
4409 * raid0 - providing it has only two drives in raid10_takeover()
4411 if (mddev->level == 0) { in raid10_takeover()
4413 raid0_conf = mddev->private; in raid10_takeover()
4414 if (raid0_conf->nr_strip_zones > 1) { in raid10_takeover()
4417 return ERR_PTR(-EINVAL); in raid10_takeover()
4420 raid0_conf->strip_zone->zone_end, in raid10_takeover()
4421 raid0_conf->strip_zone->nb_dev); in raid10_takeover()
4423 return ERR_PTR(-EINVAL); in raid10_takeover()
4429 * - layout (to ->new_layout) in raid10_check_reshape()
4430 * - chunk size (to ->new_chunk_sectors) in raid10_check_reshape()
4431 * - raid_disks (by delta_disks) in raid10_check_reshape()
4442 struct r10conf *conf = mddev->private; in raid10_check_reshape()
4445 if (conf->geo.far_copies != 1 && !conf->geo.far_offset) in raid10_check_reshape()
4446 return -EINVAL; in raid10_check_reshape()
4448 if (setup_geo(&geo, mddev, geo_start) != conf->copies) in raid10_check_reshape()
4450 return -EINVAL; in raid10_check_reshape()
4453 return -EINVAL; in raid10_check_reshape()
4455 if (mddev->array_sectors & geo.chunk_mask) in raid10_check_reshape()
4457 return -EINVAL; in raid10_check_reshape()
4459 if (!enough(conf, -1)) in raid10_check_reshape()
4460 return -EINVAL; in raid10_check_reshape()
4462 kfree(conf->mirrors_new); in raid10_check_reshape()
4463 conf->mirrors_new = NULL; in raid10_check_reshape()
4464 if (mddev->delta_disks > 0) { in raid10_check_reshape()
4466 conf->mirrors_new = in raid10_check_reshape()
4467 kcalloc(mddev->raid_disks + mddev->delta_disks, in raid10_check_reshape()
4470 if (!conf->mirrors_new) in raid10_check_reshape()
4471 return -ENOMEM; in raid10_check_reshape()
4478 * - start an array
4479 * - remove non-faulty devices
4480 * - add a spare
4481 * - allow a reshape
4486 * of the two sections, and some non-in_sync devices may
4497 for (i = 0; i < conf->prev.raid_disks; i++) { in calc_degraded()
4498 struct md_rdev *rdev = rcu_dereference(conf->mirrors[i].rdev); in calc_degraded()
4499 if (!rdev || test_bit(Faulty, &rdev->flags)) in calc_degraded()
4501 else if (!test_bit(In_sync, &rdev->flags)) in calc_degraded()
4509 if (conf->geo.raid_disks == conf->prev.raid_disks) in calc_degraded()
4513 for (i = 0; i < conf->geo.raid_disks; i++) { in calc_degraded()
4514 struct md_rdev *rdev = rcu_dereference(conf->mirrors[i].rdev); in calc_degraded()
4515 if (!rdev || test_bit(Faulty, &rdev->flags)) in calc_degraded()
4517 else if (!test_bit(In_sync, &rdev->flags)) { in calc_degraded()
4523 if (conf->geo.raid_disks <= conf->prev.raid_disks) in calc_degraded()
4540 * array non-degraded. We also require that the difference in raid10_start_reshape()
4541 * between old and new data_offset - on each device - is in raid10_start_reshape()
4542 * enough that we never risk over-writing. in raid10_start_reshape()
4549 struct r10conf *conf = mddev->private; in raid10_start_reshape()
4554 if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) in raid10_start_reshape()
4555 return -EBUSY; in raid10_start_reshape()
4557 if (setup_geo(&new, mddev, geo_start) != conf->copies) in raid10_start_reshape()
4558 return -EINVAL; in raid10_start_reshape()
4560 before_length = ((1 << conf->prev.chunk_shift) * in raid10_start_reshape()
4561 conf->prev.far_copies); in raid10_start_reshape()
4562 after_length = ((1 << conf->geo.chunk_shift) * in raid10_start_reshape()
4563 conf->geo.far_copies); in raid10_start_reshape()
4566 if (!test_bit(In_sync, &rdev->flags) in raid10_start_reshape()
4567 && !test_bit(Faulty, &rdev->flags)) in raid10_start_reshape()
4569 if (rdev->raid_disk >= 0) { in raid10_start_reshape()
4570 long long diff = (rdev->new_data_offset in raid10_start_reshape()
4571 - rdev->data_offset); in raid10_start_reshape()
4572 if (!mddev->reshape_backwards) in raid10_start_reshape()
4573 diff = -diff; in raid10_start_reshape()
4583 return -EINVAL; in raid10_start_reshape()
4585 if (spares < mddev->delta_disks) in raid10_start_reshape()
4586 return -EINVAL; in raid10_start_reshape()
4588 conf->offset_diff = min_offset_diff; in raid10_start_reshape()
4589 spin_lock_irq(&conf->device_lock); in raid10_start_reshape()
4590 if (conf->mirrors_new) { in raid10_start_reshape()
4591 memcpy(conf->mirrors_new, conf->mirrors, in raid10_start_reshape()
4592 sizeof(struct raid10_info)*conf->prev.raid_disks); in raid10_start_reshape()
4594 kfree(conf->mirrors_old); in raid10_start_reshape()
4595 conf->mirrors_old = conf->mirrors; in raid10_start_reshape()
4596 conf->mirrors = conf->mirrors_new; in raid10_start_reshape()
4597 conf->mirrors_new = NULL; in raid10_start_reshape()
4599 setup_geo(&conf->geo, mddev, geo_start); in raid10_start_reshape()
4601 if (mddev->reshape_backwards) { in raid10_start_reshape()
4603 if (size < mddev->array_sectors) { in raid10_start_reshape()
4604 spin_unlock_irq(&conf->device_lock); in raid10_start_reshape()
4607 return -EINVAL; in raid10_start_reshape()
4609 mddev->resync_max_sectors = size; in raid10_start_reshape()
4610 conf->reshape_progress = size; in raid10_start_reshape()
4612 conf->reshape_progress = 0; in raid10_start_reshape()
4613 conf->reshape_safe = conf->reshape_progress; in raid10_start_reshape()
4614 spin_unlock_irq(&conf->device_lock); in raid10_start_reshape()
4616 if (mddev->delta_disks && mddev->bitmap) { in raid10_start_reshape()
4621 newsize = raid10_size(mddev, 0, conf->geo.raid_disks); in raid10_start_reshape()
4624 ret = md_bitmap_resize(mddev->bitmap, newsize, 0, 0); in raid10_start_reshape()
4632 if (rdev->raid_disk > -1 && in raid10_start_reshape()
4633 !test_bit(Faulty, &rdev->flags)) in raid10_start_reshape()
4634 sb = page_address(rdev->sb_page); in raid10_start_reshape()
4642 if ((sb && (le32_to_cpu(sb->feature_map) & in raid10_start_reshape()
4646 ret = md_bitmap_resize(mddev->bitmap, newsize, 0, 0); in raid10_start_reshape()
4650 ret = md_cluster_ops->resize_bitmaps(mddev, newsize, oldsize); in raid10_start_reshape()
4652 md_bitmap_resize(mddev->bitmap, oldsize, 0, 0); in raid10_start_reshape()
4657 if (mddev->delta_disks > 0) { in raid10_start_reshape()
4659 if (rdev->raid_disk < 0 && in raid10_start_reshape()
4660 !test_bit(Faulty, &rdev->flags)) { in raid10_start_reshape()
4662 if (rdev->raid_disk >= in raid10_start_reshape()
4663 conf->prev.raid_disks) in raid10_start_reshape()
4664 set_bit(In_sync, &rdev->flags); in raid10_start_reshape()
4666 rdev->recovery_offset = 0; in raid10_start_reshape()
4671 } else if (rdev->raid_disk >= conf->prev.raid_disks in raid10_start_reshape()
4672 && !test_bit(Faulty, &rdev->flags)) { in raid10_start_reshape()
4674 set_bit(In_sync, &rdev->flags); in raid10_start_reshape()
4678 * ->degraded is measured against the larger of the in raid10_start_reshape()
4681 spin_lock_irq(&conf->device_lock); in raid10_start_reshape()
4682 mddev->degraded = calc_degraded(conf); in raid10_start_reshape()
4683 spin_unlock_irq(&conf->device_lock); in raid10_start_reshape()
4684 mddev->raid_disks = conf->geo.raid_disks; in raid10_start_reshape()
4685 mddev->reshape_position = conf->reshape_progress; in raid10_start_reshape()
4686 set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags); in raid10_start_reshape()
4688 clear_bit(MD_RECOVERY_SYNC, &mddev->recovery); in raid10_start_reshape()
4689 clear_bit(MD_RECOVERY_CHECK, &mddev->recovery); in raid10_start_reshape()
4690 clear_bit(MD_RECOVERY_DONE, &mddev->recovery); in raid10_start_reshape()
4691 set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery); in raid10_start_reshape()
4692 set_bit(MD_RECOVERY_RUNNING, &mddev->recovery); in raid10_start_reshape()
4694 rcu_assign_pointer(mddev->sync_thread, in raid10_start_reshape()
4696 if (!mddev->sync_thread) { in raid10_start_reshape()
4697 ret = -EAGAIN; in raid10_start_reshape()
4700 conf->reshape_checkpoint = jiffies; in raid10_start_reshape()
4701 md_wakeup_thread(mddev->sync_thread); in raid10_start_reshape()
4706 mddev->recovery = 0; in raid10_start_reshape()
4707 spin_lock_irq(&conf->device_lock); in raid10_start_reshape()
4708 conf->geo = conf->prev; in raid10_start_reshape()
4709 mddev->raid_disks = conf->geo.raid_disks; in raid10_start_reshape()
4711 rdev->new_data_offset = rdev->data_offset; in raid10_start_reshape()
4713 conf->reshape_progress = MaxSector; in raid10_start_reshape()
4714 conf->reshape_safe = MaxSector; in raid10_start_reshape()
4715 mddev->reshape_position = MaxSector; in raid10_start_reshape()
4716 spin_unlock_irq(&conf->device_lock); in raid10_start_reshape()
4720 /* Calculate the last device-address that could contain
4721 * any block from the chunk that includes the array-address 's'
4723 * i.e. the address returned will be chunk-aligned and after
4728 s = (s | geo->chunk_mask) + 1; in last_dev_address()
4729 s >>= geo->chunk_shift; in last_dev_address()
4730 s *= geo->near_copies; in last_dev_address()
4731 s = DIV_ROUND_UP_SECTOR_T(s, geo->raid_disks); in last_dev_address()
4732 s *= geo->far_copies; in last_dev_address()
4733 s <<= geo->chunk_shift; in last_dev_address()
4737 /* Calculate the first device-address that could contain
4738 * any block from the chunk that includes the array-address 's'.
4743 s >>= geo->chunk_shift; in first_dev_address()
4744 s *= geo->near_copies; in first_dev_address()
4745 sector_div(s, geo->raid_disks); in first_dev_address()
4746 s *= geo->far_copies; in first_dev_address()
4747 s <<= geo->chunk_shift; in first_dev_address()
4758 * a chunk, but that is not a problem as mddev->reshape_position in reshape_request()
4763 * we need to flush all reshape requests and update the metadata. in reshape_request()
4774 * we must update the metadata to increase the 'safe' position. in reshape_request()
4781 * (conf->offset_diff - always positive) allows a bit of slack, in reshape_request()
4786 * The means one for each copy for write-out and an extra one for in reshape_request()
4787 * read-in. in reshape_request()
4788 * We store the read-in bio in ->master_bio and the others in in reshape_request()
4789 * ->devs[x].bio and ->devs[x].repl_bio. in reshape_request()
4791 struct r10conf *conf = mddev->private; in reshape_request()
4806 if (mddev->reshape_backwards && in reshape_request()
4807 conf->reshape_progress < raid10_size(mddev, 0, 0)) { in reshape_request()
4809 - conf->reshape_progress); in reshape_request()
4810 } else if (!mddev->reshape_backwards && in reshape_request()
4811 conf->reshape_progress > 0) in reshape_request()
4812 sector_nr = conf->reshape_progress; in reshape_request()
4814 mddev->curr_resync_completed = sector_nr; in reshape_request()
4815 sysfs_notify_dirent_safe(mddev->sysfs_completed); in reshape_request()
4822 * as that doesn't work well for ->reshape_backwards. in reshape_request()
4823 * So just use ->reshape_progress. in reshape_request()
4825 if (mddev->reshape_backwards) { in reshape_request()
4829 next = first_dev_address(conf->reshape_progress - 1, in reshape_request()
4830 &conf->geo); in reshape_request()
4835 safe = last_dev_address(conf->reshape_safe - 1, in reshape_request()
4836 &conf->prev); in reshape_request()
4838 if (next + conf->offset_diff < safe) in reshape_request()
4841 last = conf->reshape_progress - 1; in reshape_request()
4842 sector_nr = last & ~(sector_t)(conf->geo.chunk_mask in reshape_request()
4843 & conf->prev.chunk_mask); in reshape_request()
4845 sector_nr = last + 1 - RESYNC_SECTORS; in reshape_request()
4850 next = last_dev_address(conf->reshape_progress, &conf->geo); in reshape_request()
4855 safe = first_dev_address(conf->reshape_safe, &conf->prev); in reshape_request()
4857 /* Need to update metadata if 'next' might be beyond 'safe' in reshape_request()
4860 if (next > safe + conf->offset_diff) in reshape_request()
4863 sector_nr = conf->reshape_progress; in reshape_request()
4864 last = sector_nr | (conf->geo.chunk_mask in reshape_request()
4865 & conf->prev.chunk_mask); in reshape_request()
4868 last = sector_nr + RESYNC_SECTORS - 1; in reshape_request()
4872 time_after(jiffies, conf->reshape_checkpoint + 10*HZ)) { in reshape_request()
4873 /* Need to update reshape_position in metadata */ in reshape_request()
4875 mddev->reshape_position = conf->reshape_progress; in reshape_request()
4876 if (mddev->reshape_backwards) in reshape_request()
4877 mddev->curr_resync_completed = raid10_size(mddev, 0, 0) in reshape_request()
4878 - conf->reshape_progress; in reshape_request()
4880 mddev->curr_resync_completed = conf->reshape_progress; in reshape_request()
4881 conf->reshape_checkpoint = jiffies; in reshape_request()
4882 set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags); in reshape_request()
4883 md_wakeup_thread(mddev->thread); in reshape_request()
4884 wait_event(mddev->sb_wait, mddev->sb_flags == 0 || in reshape_request()
4885 test_bit(MD_RECOVERY_INTR, &mddev->recovery)); in reshape_request()
4886 if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) { in reshape_request()
4890 conf->reshape_safe = mddev->reshape_position; in reshape_request()
4898 r10_bio->state = 0; in reshape_request()
4900 atomic_set(&r10_bio->remaining, 0); in reshape_request()
4901 r10_bio->mddev = mddev; in reshape_request()
4902 r10_bio->sector = sector_nr; in reshape_request()
4903 set_bit(R10BIO_IsReshape, &r10_bio->state); in reshape_request()
4904 r10_bio->sectors = last - sector_nr + 1; in reshape_request()
4906 BUG_ON(!test_bit(R10BIO_Previous, &r10_bio->state)); in reshape_request()
4913 mempool_free(r10_bio, &conf->r10buf_pool); in reshape_request()
4914 set_bit(MD_RECOVERY_INTR, &mddev->recovery); in reshape_request()
4918 read_bio = bio_alloc_bioset(rdev->bdev, RESYNC_PAGES, REQ_OP_READ, in reshape_request()
4919 GFP_KERNEL, &mddev->bio_set); in reshape_request()
4920 read_bio->bi_iter.bi_sector = (r10_bio->devs[r10_bio->read_slot].addr in reshape_request()
4921 + rdev->data_offset); in reshape_request()
4922 read_bio->bi_private = r10_bio; in reshape_request()
4923 read_bio->bi_end_io = end_reshape_read; in reshape_request()
4924 r10_bio->master_bio = read_bio; in reshape_request()
4925 r10_bio->read_slot = r10_bio->devs[r10_bio->read_slot].devnum; in reshape_request()
4931 if (mddev_is_clustered(mddev) && conf->cluster_sync_high <= sector_nr) { in reshape_request()
4935 conf->cluster_sync_low = sector_nr; in reshape_request()
4936 conf->cluster_sync_high = sector_nr + CLUSTER_RESYNC_WINDOW_SECTORS; in reshape_request()
4937 sb = page_address(rdev->sb_page); in reshape_request()
4939 sb_reshape_pos = le64_to_cpu(sb->reshape_position); in reshape_request()
4943 * update cluster_sync_low until it has finished reshape. in reshape_request()
4945 if (sb_reshape_pos < conf->cluster_sync_low) in reshape_request()
4946 conf->cluster_sync_low = sb_reshape_pos; in reshape_request()
4949 md_cluster_ops->resync_info_update(mddev, conf->cluster_sync_low, in reshape_request()
4950 conf->cluster_sync_high); in reshape_request()
4954 __raid10_find_phys(&conf->geo, r10_bio); in reshape_request()
4957 read_bio->bi_next = NULL; in reshape_request()
4960 for (s = 0; s < conf->copies*2; s++) { in reshape_request()
4962 int d = r10_bio->devs[s/2].devnum; in reshape_request()
4965 rdev2 = rcu_dereference(conf->mirrors[d].replacement); in reshape_request()
4966 b = r10_bio->devs[s/2].repl_bio; in reshape_request()
4968 rdev2 = rcu_dereference(conf->mirrors[d].rdev); in reshape_request()
4969 b = r10_bio->devs[s/2].bio; in reshape_request()
4971 if (!rdev2 || test_bit(Faulty, &rdev2->flags)) in reshape_request()
4974 bio_set_dev(b, rdev2->bdev); in reshape_request()
4975 b->bi_iter.bi_sector = r10_bio->devs[s/2].addr + in reshape_request()
4976 rdev2->new_data_offset; in reshape_request()
4977 b->bi_end_io = end_reshape_write; in reshape_request()
4978 b->bi_opf = REQ_OP_WRITE; in reshape_request()
4979 b->bi_next = blist; in reshape_request()
4986 pages = get_resync_pages(r10_bio->devs[0].bio)->pages; in reshape_request()
4989 int len = (max_sectors - s) << 9; in reshape_request()
4992 for (bio = blist; bio ; bio = bio->bi_next) { in reshape_request()
4994 bio->bi_status = BLK_STS_RESOURCE; in reshape_request()
5003 r10_bio->sectors = nr_sectors; in reshape_request()
5006 md_sync_acct_bio(read_bio, r10_bio->sectors); in reshape_request()
5007 atomic_inc(&r10_bio->remaining); in reshape_request()
5008 read_bio->bi_next = NULL; in reshape_request()
5017 * update reshape_progress in reshape_request()
5019 if (mddev->reshape_backwards) in reshape_request()
5020 conf->reshape_progress -= sectors_done; in reshape_request()
5022 conf->reshape_progress += sectors_done; in reshape_request()
5034 * If we got a read error then we do sync 1-page reads from in reshape_request_write()
5035 * elsewhere until we find the data - or give up. in reshape_request_write()
5037 struct r10conf *conf = mddev->private; in reshape_request_write()
5040 if (!test_bit(R10BIO_Uptodate, &r10_bio->state)) in reshape_request_write()
5043 md_done_sync(mddev, r10_bio->sectors, 0); in reshape_request_write()
5050 atomic_set(&r10_bio->remaining, 1); in reshape_request_write()
5051 for (s = 0; s < conf->copies*2; s++) { in reshape_request_write()
5053 int d = r10_bio->devs[s/2].devnum; in reshape_request_write()
5057 rdev = rcu_dereference(conf->mirrors[d].replacement); in reshape_request_write()
5058 b = r10_bio->devs[s/2].repl_bio; in reshape_request_write()
5060 rdev = rcu_dereference(conf->mirrors[d].rdev); in reshape_request_write()
5061 b = r10_bio->devs[s/2].bio; in reshape_request_write()
5063 if (!rdev || test_bit(Faulty, &rdev->flags)) { in reshape_request_write()
5067 atomic_inc(&rdev->nr_pending); in reshape_request_write()
5069 md_sync_acct_bio(b, r10_bio->sectors); in reshape_request_write()
5070 atomic_inc(&r10_bio->remaining); in reshape_request_write()
5071 b->bi_next = NULL; in reshape_request_write()
5079 if (test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) in end_reshape()
5082 spin_lock_irq(&conf->device_lock); in end_reshape()
5083 conf->prev = conf->geo; in end_reshape()
5084 md_finish_reshape(conf->mddev); in end_reshape()
5086 conf->reshape_progress = MaxSector; in end_reshape()
5087 conf->reshape_safe = MaxSector; in end_reshape()
5088 spin_unlock_irq(&conf->device_lock); in end_reshape()
5090 if (conf->mddev->queue) in end_reshape()
5092 conf->fullsync = 0; in end_reshape()
5097 struct r10conf *conf = mddev->private; in raid10_update_reshape_pos()
5100 md_cluster_ops->resync_info_get(mddev, &lo, &hi); in raid10_update_reshape_pos()
5101 if (((mddev->reshape_position <= hi) && (mddev->reshape_position >= lo)) in raid10_update_reshape_pos()
5102 || mddev->reshape_position == MaxSector) in raid10_update_reshape_pos()
5103 conf->reshape_progress = mddev->reshape_position; in raid10_update_reshape_pos()
5112 int sectors = r10_bio->sectors; in handle_reshape_read_error()
5113 struct r10conf *conf = mddev->private; in handle_reshape_read_error()
5119 r10b = kmalloc(struct_size(r10b, devs, conf->copies), GFP_NOIO); in handle_reshape_read_error()
5121 set_bit(MD_RECOVERY_INTR, &mddev->recovery); in handle_reshape_read_error()
5122 return -ENOMEM; in handle_reshape_read_error()
5126 pages = get_resync_pages(r10_bio->devs[0].bio)->pages; in handle_reshape_read_error()
5128 r10b->sector = r10_bio->sector; in handle_reshape_read_error()
5129 __raid10_find_phys(&conf->prev, r10b); in handle_reshape_read_error()
5141 int d = r10b->devs[slot].devnum; in handle_reshape_read_error()
5142 struct md_rdev *rdev = rcu_dereference(conf->mirrors[d].rdev); in handle_reshape_read_error()
5145 test_bit(Faulty, &rdev->flags) || in handle_reshape_read_error()
5146 !test_bit(In_sync, &rdev->flags)) in handle_reshape_read_error()
5149 addr = r10b->devs[slot].addr + idx * PAGE_SIZE; in handle_reshape_read_error()
5150 atomic_inc(&rdev->nr_pending); in handle_reshape_read_error()
5163 if (slot >= conf->copies) in handle_reshape_read_error()
5172 &mddev->recovery); in handle_reshape_read_error()
5174 return -EIO; in handle_reshape_read_error()
5176 sectors -= s; in handle_reshape_read_error()
5186 struct mddev *mddev = r10_bio->mddev; in end_reshape_write()
5187 struct r10conf *conf = mddev->private; in end_reshape_write()
5195 rdev = conf->mirrors[d].replacement; in end_reshape_write()
5198 rdev = conf->mirrors[d].rdev; in end_reshape_write()
5201 if (bio->bi_status) { in end_reshape_write()
5212 if (!atomic_dec_and_test(&r10_bio->remaining)) in end_reshape_request()
5214 md_done_sync(r10_bio->mddev, r10_bio->sectors, 1); in end_reshape_request()
5215 bio_put(r10_bio->master_bio); in end_reshape_request()
5221 struct r10conf *conf = mddev->private; in raid10_finish_reshape()
5223 if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) in raid10_finish_reshape()
5226 if (mddev->delta_disks > 0) { in raid10_finish_reshape()
5227 if (mddev->recovery_cp > mddev->resync_max_sectors) { in raid10_finish_reshape()
5228 mddev->recovery_cp = mddev->resync_max_sectors; in raid10_finish_reshape()
5229 set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); in raid10_finish_reshape()
5231 mddev->resync_max_sectors = mddev->array_sectors; in raid10_finish_reshape()
5235 for (d = conf->geo.raid_disks ; in raid10_finish_reshape()
5236 d < conf->geo.raid_disks - mddev->delta_disks; in raid10_finish_reshape()
5238 struct md_rdev *rdev = rcu_dereference(conf->mirrors[d].rdev); in raid10_finish_reshape()
5240 clear_bit(In_sync, &rdev->flags); in raid10_finish_reshape()
5241 rdev = rcu_dereference(conf->mirrors[d].replacement); in raid10_finish_reshape()
5243 clear_bit(In_sync, &rdev->flags); in raid10_finish_reshape()
5247 mddev->layout = mddev->new_layout; in raid10_finish_reshape()
5248 mddev->chunk_sectors = 1 << conf->geo.chunk_shift; in raid10_finish_reshape()
5249 mddev->reshape_position = MaxSector; in raid10_finish_reshape()
5250 mddev->delta_disks = 0; in raid10_finish_reshape()
5251 mddev->reshape_backwards = 0; in raid10_finish_reshape()
5292 MODULE_ALIAS("md-personality-9"); /* RAID10 */
5293 MODULE_ALIAS("md-raid10");
5294 MODULE_ALIAS("md-level-10");