4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License version 2 for more details. A copy is
14 * included in the COPYING file that accompanied this code.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Copyright (c) 2012 Whamcloud, Inc.
26 * lustre/osd-ldiskfs/osd_scrub.c
28 * Top-level entry points into osd module
30 * The OI scrub is used for rebuilding Object Index files when restores MDT from
33 * The otable based iterator scans ldiskfs inode table to feed up layer LFSCK.
35 * Author: Fan Yong <yong.fan@whamcloud.com>
39 # define EXPORT_SYMTAB
41 #define DEBUG_SUBSYSTEM S_MDS
43 #include <lustre/lustre_idl.h>
44 #include <lustre_disk.h>
45 #include <dt_object.h>
47 #include "osd_internal.h"
49 #include "osd_scrub.h"
51 #define HALF_SEC (CFS_HZ >> 1)
53 static inline struct osd_device *osd_scrub2dev(struct osd_scrub *scrub)
55 return container_of0(scrub, struct osd_device, od_scrub);
58 static inline struct super_block *osd_scrub2sb(struct osd_scrub *scrub)
60 return osd_sb(osd_scrub2dev(scrub));
63 static void osd_scrub_file_to_cpu(struct scrub_file *des,
64 struct scrub_file *src)
66 memcpy(des->sf_uuid, src->sf_uuid, 16);
67 des->sf_flags = le64_to_cpu(src->sf_flags);
68 des->sf_magic = le32_to_cpu(src->sf_magic);
69 des->sf_status = le16_to_cpu(src->sf_status);
70 des->sf_param = le16_to_cpu(src->sf_param);
71 des->sf_time_last_complete =
72 le64_to_cpu(src->sf_time_last_complete);
73 des->sf_time_latest_start =
74 le64_to_cpu(src->sf_time_latest_start);
75 des->sf_time_last_checkpoint =
76 le64_to_cpu(src->sf_time_last_checkpoint);
77 des->sf_pos_latest_start =
78 le64_to_cpu(src->sf_pos_latest_start);
79 des->sf_pos_last_checkpoint =
80 le64_to_cpu(src->sf_pos_last_checkpoint);
81 des->sf_pos_first_inconsistent =
82 le64_to_cpu(src->sf_pos_first_inconsistent);
83 des->sf_items_checked =
84 le64_to_cpu(src->sf_items_checked);
85 des->sf_items_updated =
86 le64_to_cpu(src->sf_items_updated);
87 des->sf_items_failed =
88 le64_to_cpu(src->sf_items_failed);
89 des->sf_items_updated_prior =
90 le64_to_cpu(src->sf_items_updated_prior);
91 des->sf_run_time = le32_to_cpu(src->sf_run_time);
92 des->sf_success_count = le32_to_cpu(src->sf_success_count);
93 des->sf_oi_count = le16_to_cpu(src->sf_oi_count);
94 memcpy(des->sf_oi_bitmap, src->sf_oi_bitmap, SCRUB_OI_BITMAP_SIZE);
97 static void osd_scrub_file_to_le(struct scrub_file *des,
98 struct scrub_file *src)
100 memcpy(des->sf_uuid, src->sf_uuid, 16);
101 des->sf_flags = cpu_to_le64(src->sf_flags);
102 des->sf_magic = cpu_to_le32(src->sf_magic);
103 des->sf_status = cpu_to_le16(src->sf_status);
104 des->sf_param = cpu_to_le16(src->sf_param);
105 des->sf_time_last_complete =
106 cpu_to_le64(src->sf_time_last_complete);
107 des->sf_time_latest_start =
108 cpu_to_le64(src->sf_time_latest_start);
109 des->sf_time_last_checkpoint =
110 cpu_to_le64(src->sf_time_last_checkpoint);
111 des->sf_pos_latest_start =
112 cpu_to_le64(src->sf_pos_latest_start);
113 des->sf_pos_last_checkpoint =
114 cpu_to_le64(src->sf_pos_last_checkpoint);
115 des->sf_pos_first_inconsistent =
116 cpu_to_le64(src->sf_pos_first_inconsistent);
117 des->sf_items_checked =
118 cpu_to_le64(src->sf_items_checked);
119 des->sf_items_updated =
120 cpu_to_le64(src->sf_items_updated);
121 des->sf_items_failed =
122 cpu_to_le64(src->sf_items_failed);
123 des->sf_items_updated_prior =
124 cpu_to_le64(src->sf_items_updated_prior);
125 des->sf_run_time = cpu_to_le32(src->sf_run_time);
126 des->sf_success_count = cpu_to_le32(src->sf_success_count);
127 des->sf_oi_count = cpu_to_le16(src->sf_oi_count);
128 memcpy(des->sf_oi_bitmap, src->sf_oi_bitmap, SCRUB_OI_BITMAP_SIZE);
131 static void osd_scrub_file_init(struct osd_scrub *scrub, __u8 *uuid)
133 struct scrub_file *sf = &scrub->os_file;
135 memset(sf, 0, sizeof(*sf));
136 memcpy(sf->sf_uuid, uuid, 16);
137 sf->sf_magic = SCRUB_MAGIC_V1;
138 sf->sf_status = SS_INIT;
141 void osd_scrub_file_reset(struct osd_scrub *scrub, __u8 *uuid, __u64 flags)
143 struct scrub_file *sf = &scrub->os_file;
145 CDEBUG(D_LFSCK, "Reset OI scrub file, flags = "LPX64"\n", flags);
146 memcpy(sf->sf_uuid, uuid, 16);
147 sf->sf_status = SS_INIT;
148 sf->sf_flags |= flags;
151 sf->sf_time_latest_start = 0;
152 sf->sf_time_last_checkpoint = 0;
153 sf->sf_pos_latest_start = 0;
154 sf->sf_pos_last_checkpoint = 0;
155 sf->sf_pos_first_inconsistent = 0;
156 sf->sf_items_checked = 0;
157 sf->sf_items_updated = 0;
158 sf->sf_items_failed = 0;
159 sf->sf_items_updated_prior = 0;
162 static int osd_scrub_file_load(struct osd_scrub *scrub)
165 char *name = LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name;
166 int len = sizeof(scrub->os_file_disk);
169 rc = osd_ldiskfs_read(scrub->os_inode, &scrub->os_file_disk, len, &pos);
171 struct scrub_file *sf = &scrub->os_file;
173 osd_scrub_file_to_cpu(sf, &scrub->os_file_disk);
174 if (sf->sf_magic != SCRUB_MAGIC_V1) {
175 CWARN("%.16s: invalid scrub magic 0x%x != 0x%x\n,",
176 name, sf->sf_magic, SCRUB_MAGIC_V1);
177 /* Process it as new scrub file. */
182 } else if (rc != 0) {
183 CERROR("%.16s: fail to load scrub file, expected = %d, "
184 "rc = %d\n", name, len, rc);
188 /* return -ENOENT for empty scrub file case. */
195 int osd_scrub_file_store(struct osd_scrub *scrub)
197 struct osd_device *dev;
200 int len = sizeof(scrub->os_file_disk);
204 dev = container_of0(scrub, struct osd_device, od_scrub);
205 credits = osd_dto_credits_noquota[DTO_WRITE_BASE] +
206 osd_dto_credits_noquota[DTO_WRITE_BLOCK];
207 jh = ldiskfs_journal_start_sb(osd_sb(dev), credits);
210 CERROR("%.16s: fail to start trans for scrub store, rc = %d\n",
211 LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name,rc);
215 osd_scrub_file_to_le(&scrub->os_file_disk, &scrub->os_file);
216 rc = osd_ldiskfs_write_record(scrub->os_inode, &scrub->os_file_disk,
218 ldiskfs_journal_stop(jh);
220 CERROR("%.16s: fail to store scrub file, expected = %d, "
222 LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name,
224 scrub->os_time_last_checkpoint = cfs_time_current();
225 scrub->os_time_next_checkpoint = scrub->os_time_last_checkpoint +
226 cfs_time_seconds(SCRUB_CHECKPOINT_INTERVAL);
230 static int osd_scrub_prep(struct osd_device *dev)
232 struct osd_scrub *scrub = &dev->od_scrub;
233 struct ptlrpc_thread *thread = &scrub->os_thread;
234 struct scrub_file *sf = &scrub->os_file;
235 __u32 flags = scrub->os_start_flags;
239 cfs_down_write(&scrub->os_rwsem);
240 if (flags & SS_SET_FAILOUT)
241 sf->sf_param |= SP_FAILOUT;
243 if (flags & SS_CLEAR_FAILOUT)
244 sf->sf_param &= ~SP_FAILOUT;
246 if (flags & SS_RESET)
247 osd_scrub_file_reset(scrub,
248 LDISKFS_SB(osd_sb(dev))->s_es->s_uuid, sf->sf_flags);
250 if (flags & SS_AUTO) {
251 scrub->os_full_speed = 1;
252 sf->sf_flags |= SF_AUTO;
254 scrub->os_full_speed = 0;
257 if (sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT))
258 scrub->os_full_speed = 1;
260 scrub->os_in_prior = 0;
261 scrub->os_waiting = 0;
262 scrub->os_new_checked = 0;
263 if (sf->sf_pos_last_checkpoint != 0)
264 sf->sf_pos_latest_start = sf->sf_pos_last_checkpoint + 1;
266 sf->sf_pos_latest_start = LDISKFS_FIRST_INO(osd_sb(dev));
268 scrub->os_pos_current = sf->sf_pos_latest_start;
269 sf->sf_status = SS_SCANNING;
270 sf->sf_time_latest_start = cfs_time_current_sec();
271 sf->sf_time_last_checkpoint = sf->sf_time_latest_start;
272 rc = osd_scrub_file_store(scrub);
274 cfs_spin_lock(&scrub->os_lock);
275 thread_set_flags(thread, SVC_RUNNING);
276 cfs_spin_unlock(&scrub->os_lock);
277 cfs_waitq_broadcast(&thread->t_ctl_waitq);
279 cfs_up_write(&scrub->os_rwsem);
285 osd_scrub_error(struct osd_device *dev, struct osd_inode_id *lid, int rc)
287 struct osd_scrub *scrub = &dev->od_scrub;
288 struct scrub_file *sf = &scrub->os_file;
290 cfs_down_write(&scrub->os_rwsem);
291 scrub->os_new_checked++;
292 sf->sf_items_failed++;
293 if (sf->sf_pos_first_inconsistent == 0 ||
294 sf->sf_pos_first_inconsistent > lid->oii_ino)
295 sf->sf_pos_first_inconsistent = lid->oii_ino;
296 cfs_up_write(&scrub->os_rwsem);
297 return sf->sf_param & SP_FAILOUT ? rc : 0;
301 osd_scrub_check_update(struct osd_thread_info *info, struct osd_device *dev,
302 struct osd_idmap_cache *oic)
304 struct osd_scrub *scrub = &dev->od_scrub;
305 struct scrub_file *sf = &scrub->os_file;
306 struct osd_inode_id *lid2 = &info->oti_id;
307 struct lu_fid *oi_fid = &info->oti_fid;
308 struct osd_inode_id *oi_id = &info->oti_id;
310 struct osd_inconsistent_item *oii = NULL;
311 struct inode *inode = NULL;
312 struct lu_fid *fid = &oic->oic_fid;
313 struct osd_inode_id *lid = &oic->oic_lid;
314 struct iam_container *bag;
315 struct iam_path_descr *ipd;
316 int ops = DTO_INDEX_UPDATE;
321 if (scrub->os_in_prior)
322 oii = cfs_list_entry(oic, struct osd_inconsistent_item,
325 cfs_down_write(&scrub->os_rwsem);
326 scrub->os_new_checked++;
327 if (lid->oii_ino < sf->sf_pos_latest_start && oii == NULL)
330 if (oii != NULL && oii->oii_insert)
333 rc = osd_oi_lookup(info, dev, fid, lid2);
339 inode = osd_iget(info, dev, lid);
342 /* Someone removed the inode. */
343 if (rc == -ENOENT || rc == -ESTALE)
348 /* Prevent the inode to be unlinked during OI scrub. */
349 cfs_mutex_lock(&inode->i_mutex);
350 if (unlikely(inode->i_nlink == 0)) {
351 cfs_mutex_unlock(&inode->i_mutex);
356 ops = DTO_INDEX_INSERT;
357 idx = osd_oi_fid2idx(dev, fid);
358 if (unlikely(!ldiskfs_test_bit(idx, sf->sf_oi_bitmap)))
359 ldiskfs_set_bit(idx, sf->sf_oi_bitmap);
360 sf->sf_flags |= SF_RECREATED;
361 } else if (osd_id_eq(lid, lid2)) {
365 sf->sf_flags |= SF_INCONSISTENT;
366 fid_cpu_to_be(oi_fid, fid);
367 osd_id_pack(oi_id, &oic->oic_lid);
368 jh = ldiskfs_journal_start_sb(osd_sb(dev),
369 osd_dto_credits_noquota[ops]);
372 CERROR("%.16s: fail to start trans for scrub store, rc = %d\n",
373 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, rc);
377 bag = &osd_fid2oi(dev, fid)->oi_dir.od_container;
378 ipd = osd_idx_ipd_get(info->oti_env, bag);
379 if (unlikely(ipd == NULL)) {
380 ldiskfs_journal_stop(jh);
381 CERROR("%.16s: fail to get ipd for scrub store\n",
382 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name);
383 GOTO(out, rc = -ENOMEM);
386 if (ops == DTO_INDEX_UPDATE)
387 rc = iam_update(jh, bag, (const struct iam_key *)oi_fid,
388 (struct iam_rec *)oi_id, ipd);
390 rc = iam_insert(jh, bag, (const struct iam_key *)oi_fid,
391 (struct iam_rec *)oi_id, ipd);
392 osd_ipd_put(info->oti_env, bag, ipd);
393 ldiskfs_journal_stop(jh);
395 if (scrub->os_in_prior)
396 sf->sf_items_updated_prior++;
398 sf->sf_items_updated++;
405 sf->sf_items_failed++;
406 if (sf->sf_pos_first_inconsistent == 0 ||
407 sf->sf_pos_first_inconsistent > lid->oii_ino)
408 sf->sf_pos_first_inconsistent = lid->oii_ino;
411 if (ops == DTO_INDEX_INSERT) {
412 cfs_mutex_unlock(&inode->i_mutex);
415 cfs_up_write(&scrub->os_rwsem);
418 LASSERT(!cfs_list_empty(&oii->oii_list));
420 cfs_spin_lock(&scrub->os_lock);
421 cfs_list_del_init(&oii->oii_list);
422 cfs_spin_unlock(&scrub->os_lock);
425 RETURN(sf->sf_param & SP_FAILOUT ? rc : 0);
428 static int do_osd_scrub_checkpoint(struct osd_scrub *scrub)
430 struct scrub_file *sf = &scrub->os_file;
434 cfs_down_write(&scrub->os_rwsem);
435 sf->sf_items_checked += scrub->os_new_checked;
436 scrub->os_new_checked = 0;
437 sf->sf_pos_last_checkpoint = scrub->os_pos_current;
438 sf->sf_time_last_checkpoint = cfs_time_current_sec();
439 sf->sf_run_time += cfs_duration_sec(cfs_time_current() + HALF_SEC -
440 scrub->os_time_last_checkpoint);
441 rc = osd_scrub_file_store(scrub);
442 cfs_up_write(&scrub->os_rwsem);
447 static inline int osd_scrub_checkpoint(struct osd_scrub *scrub)
449 if (unlikely(cfs_time_beforeq(scrub->os_time_next_checkpoint,
450 cfs_time_current()) &&
451 scrub->os_new_checked > 0))
452 return do_osd_scrub_checkpoint(scrub);
456 static void osd_scrub_post(struct osd_scrub *scrub, int result)
458 struct scrub_file *sf = &scrub->os_file;
461 cfs_down_write(&scrub->os_rwsem);
462 cfs_spin_lock(&scrub->os_lock);
463 thread_set_flags(&scrub->os_thread, SVC_STOPPING);
464 cfs_spin_unlock(&scrub->os_lock);
465 if (scrub->os_new_checked > 0) {
466 sf->sf_items_checked += scrub->os_new_checked;
467 scrub->os_new_checked = 0;
468 sf->sf_pos_last_checkpoint = scrub->os_pos_current;
470 sf->sf_time_last_checkpoint = cfs_time_current_sec();
472 sf->sf_status = SS_COMPLETED;
473 memset(sf->sf_oi_bitmap, 0, SCRUB_OI_BITMAP_SIZE);
474 sf->sf_flags &= ~(SF_RECREATED | SF_INCONSISTENT | SF_AUTO);
475 sf->sf_time_last_complete = sf->sf_time_last_checkpoint;
476 sf->sf_success_count++;
477 } else if (result == 0) {
478 sf->sf_status = SS_PAUSED;
480 sf->sf_status = SS_FAILED;
482 sf->sf_run_time += cfs_duration_sec(cfs_time_current() + HALF_SEC -
483 scrub->os_time_last_checkpoint);
484 result = osd_scrub_file_store(scrub);
486 CERROR("%.16s: fail to osd_scrub_post, rc = %d\n",
487 LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name,
489 cfs_up_write(&scrub->os_rwsem);
494 #define SCRUB_NEXT_BREAK 1 /* exit current loop and process next group */
495 #define SCRUB_NEXT_CONTINUE 2 /* skip current object and process next bit */
496 #define SCRUB_NEXT_EXIT 3 /* exit all the loops */
497 #define SCRUB_NEXT_WAIT 4 /* wait for free cache slot */
499 struct osd_iit_param {
500 struct super_block *sb;
501 struct buffer_head *bitmap;
507 typedef int (*osd_iit_next_policy)(struct osd_thread_info *info,
508 struct osd_device *dev,
509 struct osd_iit_param *param,
510 struct osd_idmap_cache **oic,
513 typedef int (*osd_iit_exec_policy)(struct osd_thread_info *info,
514 struct osd_device *dev,
515 struct osd_iit_param *param,
516 struct osd_idmap_cache *oic,
517 int *noslot, int rc);
519 static inline int osd_scrub_has_window(struct osd_scrub *scrub,
520 struct osd_otable_cache *ooc)
522 return scrub->os_pos_current < ooc->ooc_pos_preload + SCRUB_WINDOW_SIZE;
525 static int osd_iit_next(struct osd_iit_param *param, __u32 *pos)
527 param->offset = ldiskfs_find_next_bit(param->bitmap->b_data,
528 LDISKFS_INODES_PER_GROUP(param->sb), param->offset);
529 if (param->offset >= LDISKFS_INODES_PER_GROUP(param->sb)) {
530 *pos = 1 + (param->bg+1) * LDISKFS_INODES_PER_GROUP(param->sb);
531 return SCRUB_NEXT_BREAK;
533 *pos = param->gbase + param->offset;
538 static int osd_iit_iget(struct osd_thread_info *info, struct osd_device *dev,
539 struct lu_fid *fid, struct osd_inode_id *lid, __u32 pos,
540 struct super_block *sb, struct inode **pinode)
545 osd_id_gen(lid, pos, OSD_OII_NOGEN);
546 inode = osd_iget_fid(info, dev, lid, fid);
549 /* The inode may be removed after bitmap searching, or the
550 * file is new created without inode initialized yet. */
551 if (rc == -ENOENT || rc == -ESTALE)
552 return SCRUB_NEXT_CONTINUE;
554 CERROR("%.16s: fail to read inode, ino# = %u, rc = %d\n",
555 LDISKFS_SB(sb)->s_es->s_volume_name, pos, rc);
563 static int osd_scrub_next(struct osd_thread_info *info, struct osd_device *dev,
564 struct osd_iit_param *param,
565 struct osd_idmap_cache **oic, int noslot)
567 struct osd_scrub *scrub = &dev->od_scrub;
568 struct ptlrpc_thread *thread = &scrub->os_thread;
570 struct osd_inode_id *lid;
574 if (unlikely(!thread_is_running(thread)))
575 return SCRUB_NEXT_EXIT;
577 if (!cfs_list_empty(&scrub->os_inconsistent_items)) {
578 struct osd_inconsistent_item *oii;
580 oii = cfs_list_entry(scrub->os_inconsistent_items.next,
581 struct osd_inconsistent_item, oii_list);
582 *oic = &oii->oii_cache;
583 scrub->os_in_prior = 1;
588 return SCRUB_NEXT_WAIT;
590 rc = osd_iit_next(param, &scrub->os_pos_current);
594 *oic = &scrub->os_oic;
595 fid = &(*oic)->oic_fid;
596 lid = &(*oic)->oic_lid;
597 rc = osd_iit_iget(info, dev, fid, lid,
598 scrub->os_pos_current, param->sb, &inode);
602 if (!fid_is_norm(fid) || inode->i_state & I_LUSTRE_NOSCRUB)
603 rc = SCRUB_NEXT_CONTINUE;
608 static int osd_preload_next(struct osd_thread_info *info,
609 struct osd_device *dev, struct osd_iit_param *param,
610 struct osd_idmap_cache **oic, int noslot)
612 struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
613 struct osd_scrub *scrub;
614 struct ptlrpc_thread *thread;
618 rc = osd_iit_next(param, &ooc->ooc_pos_preload);
622 scrub = &dev->od_scrub;
623 thread = &scrub->os_thread;
624 if (thread_is_running(thread) &&
625 ooc->ooc_pos_preload >= scrub->os_pos_current)
626 return SCRUB_NEXT_EXIT;
628 rc = osd_iit_iget(info, dev,
629 &ooc->ooc_cache[ooc->ooc_producer_idx].oic_fid,
630 &ooc->ooc_cache[ooc->ooc_producer_idx].oic_lid,
631 ooc->ooc_pos_preload, param->sb, &inode);
632 /* If succeed, it needs to move forward; otherwise up layer LFSCK may
633 * ignore the failure, so it still need to skip the inode next time. */
634 ooc->ooc_pos_preload = param->gbase + ++(param->offset);
640 static int osd_scrub_exec(struct osd_thread_info *info, struct osd_device *dev,
641 struct osd_iit_param *param,
642 struct osd_idmap_cache *oic, int *noslot, int rc)
644 struct l_wait_info lwi = { 0 };
645 struct osd_scrub *scrub = &dev->od_scrub;
646 struct ptlrpc_thread *thread = &scrub->os_thread;
647 struct osd_otable_it *it = dev->od_otable_it;
648 struct osd_otable_cache *ooc = it ? &it->ooi_cache : NULL;
651 case SCRUB_NEXT_CONTINUE:
653 case SCRUB_NEXT_WAIT:
657 LASSERTF(rc <= 0, "unexpected rc = %d\n", rc);
660 rc = osd_scrub_error(dev, &oic->oic_lid, rc);
662 rc = osd_scrub_check_update(info, dev, oic);
666 rc = osd_scrub_checkpoint(scrub);
668 CERROR("%.16s: fail to checkpoint, pos = %u, rc = %d\n",
669 LDISKFS_SB(param->sb)->s_es->s_volume_name,
670 scrub->os_pos_current, rc);
671 /* Continue, as long as the scrub itself can go ahead. */
674 if (scrub->os_in_prior) {
675 scrub->os_in_prior = 0;
680 scrub->os_pos_current = param->gbase + ++(param->offset);
681 if (it != NULL && it->ooi_waiting &&
682 ooc->ooc_pos_preload < scrub->os_pos_current) {
684 cfs_waitq_broadcast(&thread->t_ctl_waitq);
687 if (scrub->os_full_speed || rc == SCRUB_NEXT_CONTINUE)
691 if (osd_scrub_has_window(scrub, ooc)) {
696 scrub->os_waiting = 1;
697 l_wait_event(thread->t_ctl_waitq,
698 osd_scrub_has_window(scrub, ooc) ||
699 !cfs_list_empty(&scrub->os_inconsistent_items) ||
700 !thread_is_running(thread),
702 scrub->os_waiting = 0;
704 if (osd_scrub_has_window(scrub, ooc))
711 static int osd_preload_exec(struct osd_thread_info *info,
712 struct osd_device *dev, struct osd_iit_param *param,
713 struct osd_idmap_cache *oic, int *noslot, int rc)
715 struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
718 ooc->ooc_cached_items++;
719 ooc->ooc_producer_idx = (ooc->ooc_producer_idx + 1) &
720 ~OSD_OTABLE_IT_CACHE_MASK;
722 return rc > 0 ? 0 : rc;
725 #define SCRUB_IT_ALL 1
727 static int osd_inode_iteration(struct osd_thread_info *info,
728 struct osd_device *dev, __u32 max, int preload)
730 osd_iit_next_policy next;
731 osd_iit_exec_policy exec;
734 struct osd_iit_param param;
741 struct osd_scrub *scrub = &dev->od_scrub;
743 next = osd_scrub_next;
744 exec = osd_scrub_exec;
745 pos = &scrub->os_pos_current;
746 count = &scrub->os_new_checked;
748 struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
750 next = osd_preload_next;
751 exec = osd_preload_exec;
752 pos = &ooc->ooc_pos_preload;
753 count = &ooc->ooc_cached_items;
755 param.sb = osd_sb(dev);
756 limit = le32_to_cpu(LDISKFS_SB(param.sb)->s_es->s_inodes_count);
758 while (*pos <= limit && *count < max) {
759 struct osd_idmap_cache *oic = NULL;
761 param.bg = (*pos - 1) / LDISKFS_INODES_PER_GROUP(param.sb);
762 param.offset = (*pos - 1) % LDISKFS_INODES_PER_GROUP(param.sb);
763 param.gbase = 1 + param.bg * LDISKFS_INODES_PER_GROUP(param.sb);
764 param.bitmap = ldiskfs_read_inode_bitmap(param.sb, param.bg);
765 if (param.bitmap == NULL) {
766 CERROR("%.16s: fail to read bitmap for %u, "
767 "scrub will stop, urgent mode\n",
768 LDISKFS_SB(param.sb)->s_es->s_volume_name,
773 while (param.offset < LDISKFS_INODES_PER_GROUP(param.sb) &&
775 rc = next(info, dev, ¶m, &oic, noslot);
777 case SCRUB_NEXT_BREAK:
779 case SCRUB_NEXT_EXIT:
780 brelse(param.bitmap);
784 rc = exec(info, dev, ¶m, oic, &noslot, rc);
786 brelse(param.bitmap);
792 brelse(param.bitmap);
796 RETURN(SCRUB_IT_ALL);
800 static int osd_scrub_main(void *args)
803 struct osd_device *dev = (struct osd_device *)args;
804 struct osd_scrub *scrub = &dev->od_scrub;
805 struct ptlrpc_thread *thread = &scrub->os_thread;
806 struct super_block *sb = osd_sb(dev);
810 cfs_daemonize("OI_scrub");
811 rc = lu_env_init(&env, LCT_DT_THREAD);
813 CERROR("%.16s: OI scrub, fail to init env, rc = %d\n",
814 LDISKFS_SB(sb)->s_es->s_volume_name, rc);
818 rc = osd_scrub_prep(dev);
820 CERROR("%.16s: OI scrub, fail to scrub prep, rc = %d\n",
821 LDISKFS_SB(sb)->s_es->s_volume_name, rc);
825 if (!scrub->os_full_speed) {
826 struct l_wait_info lwi = { 0 };
827 struct osd_otable_it *it = dev->od_otable_it;
828 struct osd_otable_cache *ooc = &it->ooi_cache;
830 l_wait_event(thread->t_ctl_waitq,
831 it->ooi_user_ready || !thread_is_running(thread),
833 if (unlikely(!thread_is_running(thread)))
836 LASSERT(scrub->os_pos_current >= ooc->ooc_pos_preload);
837 scrub->os_pos_current = ooc->ooc_pos_preload;
840 CDEBUG(D_LFSCK, "OI scrub: flags = 0x%x, pos = %u\n",
841 scrub->os_start_flags, scrub->os_pos_current);
843 rc = osd_inode_iteration(osd_oti_get(&env), dev, ~0U, 0);
847 osd_scrub_post(scrub, rc);
848 CDEBUG(D_LFSCK, "OI scrub: stop, rc = %d, pos = %u\n",
849 rc, scrub->os_pos_current);
852 while (!cfs_list_empty(&scrub->os_inconsistent_items)) {
853 struct osd_inconsistent_item *oii;
855 oii = cfs_list_entry(scrub->os_inconsistent_items.next,
856 struct osd_inconsistent_item, oii_list);
857 cfs_list_del_init(&oii->oii_list);
863 cfs_spin_lock(&scrub->os_lock);
864 thread_set_flags(thread, SVC_STOPPED);
865 cfs_waitq_broadcast(&thread->t_ctl_waitq);
866 cfs_spin_unlock(&scrub->os_lock);
870 static int do_osd_scrub_start(struct osd_device *dev, __u32 flags)
872 struct osd_scrub *scrub = &dev->od_scrub;
873 struct ptlrpc_thread *thread = &scrub->os_thread;
874 struct l_wait_info lwi = { 0 };
879 /* os_lock: sync status between stop and scrub thread */
880 cfs_spin_lock(&scrub->os_lock);
881 if (thread_is_running(thread)) {
882 cfs_spin_unlock(&scrub->os_lock);
884 } else if (unlikely(thread_is_stopping(thread))) {
885 cfs_spin_unlock(&scrub->os_lock);
886 l_wait_event(thread->t_ctl_waitq,
887 thread_is_stopped(thread),
891 cfs_spin_unlock(&scrub->os_lock);
893 scrub->os_start_flags = flags;
894 thread_set_flags(thread, 0);
895 rc = cfs_create_thread(osd_scrub_main, dev, 0);
897 CERROR("%.16s: cannot start iteration thread, rc = %d\n",
898 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, rc);
902 l_wait_event(thread->t_ctl_waitq,
903 thread_is_running(thread) || thread_is_stopped(thread),
909 int osd_scrub_start(struct osd_device *dev)
911 __u32 flags = SS_AUTO;
915 if (dev->od_scrub.os_file.sf_status == SS_COMPLETED)
918 /* od_otable_mutex: prevent curcurrent start/stop */
919 cfs_mutex_lock(&dev->od_otable_mutex);
920 rc = do_osd_scrub_start(dev, flags);
921 cfs_mutex_unlock(&dev->od_otable_mutex);
923 RETURN(rc == -EALREADY ? 0 : rc);
926 static void do_osd_scrub_stop(struct osd_scrub *scrub)
928 struct ptlrpc_thread *thread = &scrub->os_thread;
929 struct l_wait_info lwi = { 0 };
931 /* os_lock: sync status between stop and scrub thread */
932 cfs_spin_lock(&scrub->os_lock);
933 if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
934 thread_set_flags(thread, SVC_STOPPING);
935 cfs_spin_unlock(&scrub->os_lock);
936 cfs_waitq_broadcast(&thread->t_ctl_waitq);
937 l_wait_event(thread->t_ctl_waitq,
938 thread_is_stopped(thread),
940 /* Do not skip the last lock/unlock, which can guarantee that
941 * the caller cannot return until the OI scrub thread exit. */
942 cfs_spin_lock(&scrub->os_lock);
944 cfs_spin_unlock(&scrub->os_lock);
947 static void osd_scrub_stop(struct osd_device *dev)
949 /* od_otable_mutex: prevent curcurrent start/stop */
950 cfs_mutex_lock(&dev->od_otable_mutex);
951 do_osd_scrub_stop(&dev->od_scrub);
952 cfs_mutex_unlock(&dev->od_otable_mutex);
955 static const char osd_scrub_name[] = "OI_scrub";
957 int osd_scrub_setup(const struct lu_env *env, struct osd_device *dev)
959 struct osd_thread_info *info = osd_oti_get(env);
960 struct osd_scrub *scrub = &dev->od_scrub;
961 struct lvfs_run_ctxt *ctxt = &scrub->os_ctxt;
962 struct scrub_file *sf = &scrub->os_file;
963 struct osd_inode_id *id = &scrub->os_oic.oic_lid;
964 struct super_block *sb = osd_sb(dev);
965 struct ldiskfs_super_block *es = LDISKFS_SB(sb)->s_es;
967 struct lvfs_run_ctxt saved;
974 OBD_SET_CTXT_MAGIC(ctxt);
975 ctxt->pwdmnt = dev->od_mnt;
976 ctxt->pwd = dev->od_mnt->mnt_root;
979 cfs_waitq_init(&scrub->os_thread.t_ctl_waitq);
980 cfs_init_rwsem(&scrub->os_rwsem);
981 cfs_spin_lock_init(&scrub->os_lock);
982 CFS_INIT_LIST_HEAD(&scrub->os_inconsistent_items);
983 if (get_mount_flags(dev->od_mount->lmi_sb) & LMD_FLG_NOSCRUB)
984 scrub->os_no_scrub = 1;
986 push_ctxt(&saved, ctxt, NULL);
987 filp = filp_open(osd_scrub_name, O_RDWR | O_CREAT, 0644);
989 RETURN(PTR_ERR(filp));
991 scrub->os_inode = igrab(filp->f_dentry->d_inode);
993 pop_ctxt(&saved, ctxt, NULL);
995 rc = osd_scrub_file_load(scrub);
997 osd_scrub_file_init(scrub, es->s_uuid);
1000 } else if (rc != 0) {
1003 if (memcmp(sf->sf_uuid, es->s_uuid, 16) != 0) {
1004 osd_scrub_file_reset(scrub, es->s_uuid,SF_INCONSISTENT);
1006 } else if (sf->sf_status == SS_SCANNING) {
1007 sf->sf_status = SS_CRASHED;
1012 if (sf->sf_pos_last_checkpoint != 0)
1013 scrub->os_pos_current = sf->sf_pos_last_checkpoint + 1;
1015 scrub->os_pos_current = LDISKFS_FIRST_INO(sb);
1018 rc = osd_scrub_file_store(scrub);
1023 /* Initialize OI files. */
1024 rc = osd_oi_init(info, dev);
1029 rc = __osd_oi_lookup(info, dev, &LU_DOT_LUSTRE_FID, id);
1031 inode = osd_iget(info, dev, id);
1032 if (IS_ERR(inode)) {
1033 rc = PTR_ERR(inode);
1034 /* It is restored from old 2.x backup. */
1035 if (rc == -ENOENT || rc == -ESTALE) {
1036 osd_scrub_file_reset(scrub, es->s_uuid,
1038 rc = osd_scrub_file_store(scrub);
1043 } else if (rc == -ENOENT) {
1048 if (rc == 0 && !scrub->os_no_scrub &&
1049 ((sf->sf_status == SS_CRASHED &&
1050 sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT | SF_AUTO)) ||
1051 (sf->sf_status == SS_INIT &&
1052 sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT))))
1053 rc = osd_scrub_start(dev);
1058 void osd_scrub_cleanup(const struct lu_env *env, struct osd_device *dev)
1060 struct osd_scrub *scrub = &dev->od_scrub;
1062 LASSERT(dev->od_otable_it == NULL);
1064 if (scrub->os_inode != NULL) {
1065 osd_scrub_stop(dev);
1066 iput(scrub->os_inode);
1067 scrub->os_inode = NULL;
1069 if (dev->od_oi_table != NULL)
1070 osd_oi_fini(osd_oti_get(env), dev);
1073 static struct dt_it *osd_otable_it_init(const struct lu_env *env,
1074 struct dt_object *dt, __u32 attr,
1075 struct lustre_capa *capa)
1077 enum dt_otable_it_flags flags = attr >> DT_OTABLE_IT_FLAGS_SHIFT;
1078 enum dt_otable_it_valid valid = attr & ~DT_OTABLE_IT_FLAGS_MASK;
1079 struct osd_device *dev = osd_dev(dt->do_lu.lo_dev);
1080 struct osd_scrub *scrub = &dev->od_scrub;
1081 struct osd_otable_it *it;
1086 /* od_otable_mutex: prevent curcurrent init/fini */
1087 cfs_mutex_lock(&dev->od_otable_mutex);
1088 if (dev->od_otable_it != NULL)
1089 GOTO(out, it = ERR_PTR(-EALREADY));
1093 GOTO(out, it = ERR_PTR(-ENOMEM));
1095 dev->od_otable_it = it;
1097 it->ooi_cache.ooc_consumer_idx = -1;
1098 if (flags & DOIF_OUTUSED)
1099 it->ooi_used_outside = 1;
1101 if (flags & DOIF_RESET)
1104 if (valid & DOIV_ERROR_HANDLE) {
1105 if (flags & DOIF_FAILOUT)
1106 start |= SS_SET_FAILOUT;
1108 start |= SS_CLEAR_FAILOUT;
1111 rc = do_osd_scrub_start(dev, start);
1112 if (rc == -EALREADY) {
1113 it->ooi_cache.ooc_pos_preload = scrub->os_pos_current - 1;
1114 } else if (rc < 0) {
1115 dev->od_otable_it = NULL;
1117 GOTO(out, it = ERR_PTR(-EALREADY));
1119 it->ooi_cache.ooc_pos_preload = scrub->os_pos_current;
1125 cfs_mutex_unlock(&dev->od_otable_mutex);
1126 return (struct dt_it *)it;
1129 static void osd_otable_it_fini(const struct lu_env *env, struct dt_it *di)
1131 struct osd_otable_it *it = (struct osd_otable_it *)di;
1132 struct osd_device *dev = it->ooi_dev;
1134 /* od_otable_mutex: prevent curcurrent init/fini */
1135 cfs_mutex_lock(&dev->od_otable_mutex);
1136 do_osd_scrub_stop(&dev->od_scrub);
1137 LASSERT(dev->od_otable_it == it);
1139 dev->od_otable_it = NULL;
1140 cfs_mutex_unlock(&dev->od_otable_mutex);
1145 * Set the OSD layer iteration start position as the specified key.
1147 * The LFSCK out of OSD layer does not know the detail of the key, so if there
1148 * are several keys, they cannot be compared out of OSD, so call "::get()" for
1149 * each key, and OSD will select the smallest one by itself.
1151 static int osd_otable_it_get(const struct lu_env *env,
1152 struct dt_it *di, const struct dt_key *key)
1154 struct osd_otable_it *it = (struct osd_otable_it *)di;
1155 struct osd_otable_cache *ooc = &it->ooi_cache;
1156 const char *str = (const char *)key;
1160 /* Forbid to set iteration position after iteration started. */
1161 if (it->ooi_user_ready)
1167 if (sscanf(str, "%u", &ino) <= 0)
1170 /* Skip the one that has been processed last time. */
1171 if (ooc->ooc_pos_preload > ++ino)
1172 ooc->ooc_pos_preload = ino;
1177 static int osd_otable_it_preload(const struct lu_env *env,
1178 struct osd_otable_it *it)
1180 struct osd_device *dev = it->ooi_dev;
1181 struct osd_scrub *scrub = &dev->od_scrub;
1182 struct osd_otable_cache *ooc = &it->ooi_cache;
1186 rc = osd_inode_iteration(osd_oti_get(env), dev,
1187 OSD_OTABLE_IT_CACHE_SIZE, 1);
1188 if (rc == SCRUB_IT_ALL)
1189 it->ooi_all_cached = 1;
1191 CDEBUG(D_LFSCK, "OSD pre-loaded: max = %u, preload = %u, rc = %d\n",
1192 le32_to_cpu(LDISKFS_SB(osd_sb(dev))->s_es->s_inodes_count),
1193 ooc->ooc_pos_preload, rc);
1195 if (scrub->os_waiting && osd_scrub_has_window(scrub, ooc)) {
1196 scrub->os_waiting = 0;
1197 cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
1200 RETURN(rc < 0 ? rc : ooc->ooc_cached_items);
1203 static int osd_otable_it_next(const struct lu_env *env, struct dt_it *di)
1205 struct osd_otable_it *it = (struct osd_otable_it *)di;
1206 struct osd_device *dev = it->ooi_dev;
1207 struct osd_scrub *scrub = &dev->od_scrub;
1208 struct osd_otable_cache *ooc = &it->ooi_cache;
1209 struct ptlrpc_thread *thread = &scrub->os_thread;
1210 struct l_wait_info lwi = { 0 };
1214 LASSERT(it->ooi_user_ready);
1217 if (!thread_is_running(thread) && !it->ooi_used_outside)
1220 if (ooc->ooc_cached_items > 0) {
1221 ooc->ooc_cached_items--;
1222 ooc->ooc_consumer_idx = (ooc->ooc_consumer_idx + 1) &
1223 ~OSD_OTABLE_IT_CACHE_MASK;
1227 if (it->ooi_all_cached) {
1228 l_wait_event(thread->t_ctl_waitq,
1229 !thread_is_running(thread),
1234 it->ooi_waiting = 1;
1235 l_wait_event(thread->t_ctl_waitq,
1236 ooc->ooc_pos_preload < scrub->os_pos_current ||
1237 !thread_is_running(thread),
1239 it->ooi_waiting = 0;
1241 if (!thread_is_running(thread) && !it->ooi_used_outside)
1244 rc = osd_otable_it_preload(env, it);
1251 static struct dt_key *osd_otable_it_key(const struct lu_env *env,
1252 const struct dt_it *di)
1254 struct osd_otable_it *it = (struct osd_otable_it *)di;
1255 struct osd_otable_cache *ooc = &it->ooi_cache;
1257 sprintf(it->ooi_key, "%u",
1258 ooc->ooc_cache[ooc->ooc_consumer_idx].oic_lid.oii_ino);
1259 return (struct dt_key *)it->ooi_key;
1262 static int osd_otable_it_key_size(const struct lu_env *env,
1263 const struct dt_it *di)
1265 return sizeof(((struct osd_otable_it *)di)->ooi_key);
1268 static int osd_otable_it_rec(const struct lu_env *env, const struct dt_it *di,
1269 struct dt_rec *rec, __u32 attr)
1271 struct osd_otable_it *it = (struct osd_otable_it *)di;
1272 struct osd_otable_cache *ooc = &it->ooi_cache;
1274 *(struct lu_fid *)rec = ooc->ooc_cache[ooc->ooc_consumer_idx].oic_fid;
1278 static int osd_otable_it_load(const struct lu_env *env,
1279 const struct dt_it *di, __u64 hash)
1281 struct osd_otable_it *it = (struct osd_otable_it *)di;
1282 struct osd_device *dev = it->ooi_dev;
1283 struct osd_otable_cache *ooc = &it->ooi_cache;
1284 struct osd_scrub *scrub = &dev->od_scrub;
1286 if (it->ooi_user_ready)
1289 if (ooc->ooc_pos_preload < LDISKFS_FIRST_INO(osd_sb(dev)))
1290 ooc->ooc_pos_preload = LDISKFS_FIRST_INO(osd_sb(dev));
1291 it->ooi_user_ready = 1;
1292 if (!scrub->os_full_speed)
1293 cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
1295 /* Unplug OSD layer iteration by the first next() call. */
1296 return osd_otable_it_next(env, (struct dt_it *)it);
1299 const struct dt_index_operations osd_otable_ops = {
1301 .init = osd_otable_it_init,
1302 .fini = osd_otable_it_fini,
1303 .get = osd_otable_it_get,
1304 .next = osd_otable_it_next,
1305 .key = osd_otable_it_key,
1306 .key_size = osd_otable_it_key_size,
1307 .rec = osd_otable_it_rec,
1308 .load = osd_otable_it_load,
1312 int osd_oii_insert(struct osd_device *dev, struct osd_idmap_cache *oic,
1315 struct osd_inconsistent_item *oii;
1316 struct osd_scrub *scrub = &dev->od_scrub;
1317 struct ptlrpc_thread *thread = &scrub->os_thread;
1322 if (unlikely(oii == NULL))
1325 CFS_INIT_LIST_HEAD(&oii->oii_list);
1326 oii->oii_cache = *oic;
1327 oii->oii_insert = insert;
1329 cfs_spin_lock(&scrub->os_lock);
1330 if (unlikely(!thread_is_running(thread))) {
1331 cfs_spin_unlock(&scrub->os_lock);
1336 if (cfs_list_empty(&scrub->os_inconsistent_items))
1338 cfs_list_add_tail(&oii->oii_list, &scrub->os_inconsistent_items);
1339 cfs_spin_unlock(&scrub->os_lock);
1342 cfs_waitq_broadcast(&thread->t_ctl_waitq);
1347 int osd_oii_lookup(struct osd_device *dev, const struct lu_fid *fid,
1348 struct osd_inode_id *id)
1350 struct osd_scrub *scrub = &dev->od_scrub;
1351 struct osd_inconsistent_item *oii;
1354 cfs_spin_lock(&scrub->os_lock);
1355 cfs_list_for_each_entry(oii, &scrub->os_inconsistent_items, oii_list) {
1356 if (lu_fid_eq(fid, &oii->oii_cache.oic_fid)) {
1357 *id = oii->oii_cache.oic_lid;
1358 cfs_spin_unlock(&scrub->os_lock);
1362 cfs_spin_unlock(&scrub->os_lock);