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, Intel Corporation.
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 #define OSD_OTABLE_MAX_HASH 0x00000000ffffffffULL
55 #define SCRUB_NEXT_BREAK 1 /* exit current loop and process next group */
56 #define SCRUB_NEXT_CONTINUE 2 /* skip current object and process next bit */
57 #define SCRUB_NEXT_EXIT 3 /* exit all the loops */
58 #define SCRUB_NEXT_WAIT 4 /* wait for free cache slot */
59 #define SCRUB_NEXT_CRASH 5 /* simulate system crash during OI scrub */
60 #define SCRUB_NEXT_FATAL 6 /* simulate failure during OI scrub */
61 #define SCRUB_NEXT_NOSCRUB 7 /* new created object, no scrub on it */
62 #define SCRUB_NEXT_NOLMA 8 /* the inode has no FID-in-LMA */
66 static inline struct osd_device *osd_scrub2dev(struct osd_scrub *scrub)
68 return container_of0(scrub, struct osd_device, od_scrub);
71 static inline struct super_block *osd_scrub2sb(struct osd_scrub *scrub)
73 return osd_sb(osd_scrub2dev(scrub));
76 static inline int osd_scrub_has_window(struct osd_scrub *scrub,
77 struct osd_otable_cache *ooc)
79 return scrub->os_pos_current < ooc->ooc_pos_preload + SCRUB_WINDOW_SIZE;
82 static int osd_scrub_refresh_mapping(struct osd_thread_info *info,
83 struct osd_device *dev,
84 const struct lu_fid *fid,
85 const struct osd_inode_id *id, int ops)
87 struct lu_fid *oi_fid = &info->oti_fid2;
88 struct osd_inode_id *oi_id = &info->oti_id2;
89 struct iam_container *bag;
90 struct iam_path_descr *ipd;
95 fid_cpu_to_be(oi_fid, fid);
96 osd_id_pack(oi_id, id);
97 jh = ldiskfs_journal_start_sb(osd_sb(dev),
98 osd_dto_credits_noquota[ops]);
101 CERROR("%.16s: fail to start trans for scrub store: rc = %d\n",
102 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, rc);
106 bag = &osd_fid2oi(dev, fid)->oi_dir.od_container;
107 ipd = osd_idx_ipd_get(info->oti_env, bag);
108 if (unlikely(ipd == NULL)) {
109 ldiskfs_journal_stop(jh);
110 CERROR("%.16s: fail to get ipd for scrub store\n",
111 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name);
115 if (ops == DTO_INDEX_UPDATE) {
116 rc = iam_update(jh, bag, (const struct iam_key *)oi_fid,
117 (struct iam_rec *)oi_id, ipd);
119 rc = iam_insert(jh, bag, (const struct iam_key *)oi_fid,
120 (struct iam_rec *)oi_id, ipd);
123 /* XXX: There are trouble things when adding OI
124 * mapping for IGIF object, which may cause
125 * multiple objects to be mapped to the same
126 * IGIF formatted FID. Consider the following
129 * 1) The MDT is upgrading from 1.8 device.
130 * The OI scrub generates IGIF FID1 for the
131 * OBJ1 and adds the OI mapping.
133 * 2) For some reason, the OI scrub does not
134 * process all the IGIF objects completely.
136 * 3) The MDT is backuped and restored against
139 * 4) When the MDT mounts up, the OI scrub will
140 * try to rebuild the OI files. For some IGIF
141 * object, OBJ2, which was not processed by the
142 * OI scrub before the backup/restore, and the
143 * new generated IGIF formatted FID may be just
144 * the FID1, the same as OBJ1.
146 * Under such case, the OI scrub cannot know how
147 * to generate new FID for the OBJ2.
149 * Currently, we do nothing for that. One possible
150 * solution is to generate new normal FID for the
153 * Anyway, it is rare, only exists in theory. */
156 osd_ipd_put(info->oti_env, bag, ipd);
157 ldiskfs_journal_stop(jh);
161 /* OI_scrub file ops */
163 static void osd_scrub_file_to_cpu(struct scrub_file *des,
164 struct scrub_file *src)
166 memcpy(des->sf_uuid, src->sf_uuid, 16);
167 des->sf_flags = le64_to_cpu(src->sf_flags);
168 des->sf_magic = le32_to_cpu(src->sf_magic);
169 des->sf_status = le16_to_cpu(src->sf_status);
170 des->sf_param = le16_to_cpu(src->sf_param);
171 des->sf_time_last_complete =
172 le64_to_cpu(src->sf_time_last_complete);
173 des->sf_time_latest_start =
174 le64_to_cpu(src->sf_time_latest_start);
175 des->sf_time_last_checkpoint =
176 le64_to_cpu(src->sf_time_last_checkpoint);
177 des->sf_pos_latest_start =
178 le64_to_cpu(src->sf_pos_latest_start);
179 des->sf_pos_last_checkpoint =
180 le64_to_cpu(src->sf_pos_last_checkpoint);
181 des->sf_pos_first_inconsistent =
182 le64_to_cpu(src->sf_pos_first_inconsistent);
183 des->sf_items_checked =
184 le64_to_cpu(src->sf_items_checked);
185 des->sf_items_updated =
186 le64_to_cpu(src->sf_items_updated);
187 des->sf_items_failed =
188 le64_to_cpu(src->sf_items_failed);
189 des->sf_items_updated_prior =
190 le64_to_cpu(src->sf_items_updated_prior);
191 des->sf_run_time = le32_to_cpu(src->sf_run_time);
192 des->sf_success_count = le32_to_cpu(src->sf_success_count);
193 des->sf_oi_count = le16_to_cpu(src->sf_oi_count);
194 memcpy(des->sf_oi_bitmap, src->sf_oi_bitmap, SCRUB_OI_BITMAP_SIZE);
197 static void osd_scrub_file_to_le(struct scrub_file *des,
198 struct scrub_file *src)
200 memcpy(des->sf_uuid, src->sf_uuid, 16);
201 des->sf_flags = cpu_to_le64(src->sf_flags);
202 des->sf_magic = cpu_to_le32(src->sf_magic);
203 des->sf_status = cpu_to_le16(src->sf_status);
204 des->sf_param = cpu_to_le16(src->sf_param);
205 des->sf_time_last_complete =
206 cpu_to_le64(src->sf_time_last_complete);
207 des->sf_time_latest_start =
208 cpu_to_le64(src->sf_time_latest_start);
209 des->sf_time_last_checkpoint =
210 cpu_to_le64(src->sf_time_last_checkpoint);
211 des->sf_pos_latest_start =
212 cpu_to_le64(src->sf_pos_latest_start);
213 des->sf_pos_last_checkpoint =
214 cpu_to_le64(src->sf_pos_last_checkpoint);
215 des->sf_pos_first_inconsistent =
216 cpu_to_le64(src->sf_pos_first_inconsistent);
217 des->sf_items_checked =
218 cpu_to_le64(src->sf_items_checked);
219 des->sf_items_updated =
220 cpu_to_le64(src->sf_items_updated);
221 des->sf_items_failed =
222 cpu_to_le64(src->sf_items_failed);
223 des->sf_items_updated_prior =
224 cpu_to_le64(src->sf_items_updated_prior);
225 des->sf_run_time = cpu_to_le32(src->sf_run_time);
226 des->sf_success_count = cpu_to_le32(src->sf_success_count);
227 des->sf_oi_count = cpu_to_le16(src->sf_oi_count);
228 memcpy(des->sf_oi_bitmap, src->sf_oi_bitmap, SCRUB_OI_BITMAP_SIZE);
231 static void osd_scrub_file_init(struct osd_scrub *scrub, __u8 *uuid)
233 struct scrub_file *sf = &scrub->os_file;
235 memset(sf, 0, sizeof(*sf));
236 memcpy(sf->sf_uuid, uuid, 16);
237 sf->sf_magic = SCRUB_MAGIC_V1;
238 sf->sf_status = SS_INIT;
241 void osd_scrub_file_reset(struct osd_scrub *scrub, __u8 *uuid, __u64 flags)
243 struct scrub_file *sf = &scrub->os_file;
245 CDEBUG(D_LFSCK, "Reset OI scrub file, flags = "LPX64"\n", flags);
246 memcpy(sf->sf_uuid, uuid, 16);
247 sf->sf_status = SS_INIT;
248 sf->sf_flags |= flags;
251 sf->sf_time_latest_start = 0;
252 sf->sf_time_last_checkpoint = 0;
253 sf->sf_pos_latest_start = 0;
254 sf->sf_pos_last_checkpoint = 0;
255 sf->sf_pos_first_inconsistent = 0;
256 sf->sf_items_checked = 0;
257 sf->sf_items_updated = 0;
258 sf->sf_items_failed = 0;
259 sf->sf_items_updated_prior = 0;
260 sf->sf_items_noscrub = 0;
261 sf->sf_items_igif = 0;
264 static int osd_scrub_file_load(struct osd_scrub *scrub)
267 char *name = LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name;
268 int len = sizeof(scrub->os_file_disk);
271 rc = osd_ldiskfs_read(scrub->os_inode, &scrub->os_file_disk, len, &pos);
273 struct scrub_file *sf = &scrub->os_file;
275 osd_scrub_file_to_cpu(sf, &scrub->os_file_disk);
276 if (sf->sf_magic != SCRUB_MAGIC_V1) {
277 CWARN("%.16s: invalid scrub magic 0x%x != 0x%x\n,",
278 name, sf->sf_magic, SCRUB_MAGIC_V1);
279 /* Process it as new scrub file. */
284 } else if (rc != 0) {
285 CERROR("%.16s: fail to load scrub file, expected = %d, "
286 "rc = %d\n", name, len, rc);
290 /* return -ENOENT for empty scrub file case. */
297 int osd_scrub_file_store(struct osd_scrub *scrub)
299 struct osd_device *dev;
302 int len = sizeof(scrub->os_file_disk);
306 dev = container_of0(scrub, struct osd_device, od_scrub);
307 credits = osd_dto_credits_noquota[DTO_WRITE_BASE] +
308 osd_dto_credits_noquota[DTO_WRITE_BLOCK];
309 jh = ldiskfs_journal_start_sb(osd_sb(dev), credits);
312 CERROR("%.16s: fail to start trans for scrub store, rc = %d\n",
313 LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name,rc);
317 osd_scrub_file_to_le(&scrub->os_file_disk, &scrub->os_file);
318 rc = osd_ldiskfs_write_record(scrub->os_inode, &scrub->os_file_disk,
320 ldiskfs_journal_stop(jh);
322 CERROR("%.16s: fail to store scrub file, expected = %d, "
324 LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name,
326 scrub->os_time_last_checkpoint = cfs_time_current();
327 scrub->os_time_next_checkpoint = scrub->os_time_last_checkpoint +
328 cfs_time_seconds(SCRUB_CHECKPOINT_INTERVAL);
334 static int osd_scrub_prep(struct osd_device *dev)
336 struct osd_scrub *scrub = &dev->od_scrub;
337 struct ptlrpc_thread *thread = &scrub->os_thread;
338 struct scrub_file *sf = &scrub->os_file;
339 __u32 flags = scrub->os_start_flags;
343 down_write(&scrub->os_rwsem);
344 if (flags & SS_SET_FAILOUT)
345 sf->sf_param |= SP_FAILOUT;
347 if (flags & SS_CLEAR_FAILOUT)
348 sf->sf_param &= ~SP_FAILOUT;
350 if (flags & SS_RESET)
351 osd_scrub_file_reset(scrub,
352 LDISKFS_SB(osd_sb(dev))->s_es->s_uuid, 0);
354 if (flags & SS_AUTO) {
355 scrub->os_full_speed = 1;
356 sf->sf_flags |= SF_AUTO;
358 scrub->os_full_speed = 0;
361 if (sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT | SF_UPGRADE))
362 scrub->os_full_speed = 1;
364 scrub->os_in_prior = 0;
365 scrub->os_waiting = 0;
366 scrub->os_paused = 0;
367 scrub->os_new_checked = 0;
368 if (sf->sf_pos_last_checkpoint != 0)
369 sf->sf_pos_latest_start = sf->sf_pos_last_checkpoint + 1;
371 sf->sf_pos_latest_start = LDISKFS_FIRST_INO(osd_sb(dev)) + 1;
373 scrub->os_pos_current = sf->sf_pos_latest_start;
374 sf->sf_status = SS_SCANNING;
375 sf->sf_time_latest_start = cfs_time_current_sec();
376 sf->sf_time_last_checkpoint = sf->sf_time_latest_start;
377 rc = osd_scrub_file_store(scrub);
379 spin_lock(&scrub->os_lock);
380 thread_set_flags(thread, SVC_RUNNING);
381 spin_unlock(&scrub->os_lock);
382 cfs_waitq_broadcast(&thread->t_ctl_waitq);
384 up_write(&scrub->os_rwsem);
390 osd_scrub_check_update(struct osd_thread_info *info, struct osd_device *dev,
391 struct osd_idmap_cache *oic, int val)
393 struct osd_scrub *scrub = &dev->od_scrub;
394 struct scrub_file *sf = &scrub->os_file;
395 struct lu_fid *fid = &oic->oic_fid;
396 struct osd_inode_id *lid = &oic->oic_lid;
397 struct osd_inode_id *lid2 = &info->oti_id;
398 struct osd_inconsistent_item *oii = NULL;
399 struct inode *inode = NULL;
400 int ops = DTO_INDEX_UPDATE;
405 down_write(&scrub->os_rwsem);
406 scrub->os_new_checked++;
410 if (scrub->os_in_prior)
411 oii = cfs_list_entry(oic, struct osd_inconsistent_item,
414 if (lid->oii_ino < sf->sf_pos_latest_start && oii == NULL)
417 if (fid_is_igif(fid))
420 if ((val == SCRUB_NEXT_NOLMA) &&
421 (!dev->od_handle_nolma || OBD_FAIL_CHECK(OBD_FAIL_FID_NOLMA)))
424 if ((oii != NULL && oii->oii_insert) || (val == SCRUB_NEXT_NOLMA))
427 /* XXX: Currently, no FID-in-LMA for OST object, so osd_oi_lookup()
428 * without checking FLD is enough.
430 * It should be updated if FID-in-LMA for OSD object introduced
432 rc = osd_oi_lookup(info, dev, fid, lid2, false);
438 inode = osd_iget(info, dev, lid);
441 /* Someone removed the inode. */
442 if (rc == -ENOENT || rc == -ESTALE)
447 /* Prevent the inode to be unlinked during OI scrub. */
448 mutex_lock(&inode->i_mutex);
449 if (unlikely(inode->i_nlink == 0)) {
450 mutex_unlock(&inode->i_mutex);
455 ops = DTO_INDEX_INSERT;
456 idx = osd_oi_fid2idx(dev, fid);
457 if (val == SCRUB_NEXT_NOLMA) {
458 sf->sf_flags |= SF_UPGRADE;
459 scrub->os_full_speed = 1;
460 rc = osd_ea_fid_set(info, inode, fid, 0);
464 sf->sf_flags |= SF_RECREATED | SF_INCONSISTENT;
465 scrub->os_full_speed = 1;
466 if (unlikely(!ldiskfs_test_bit(idx, sf->sf_oi_bitmap)))
467 ldiskfs_set_bit(idx, sf->sf_oi_bitmap);
469 } else if (osd_id_eq(lid, lid2)) {
472 sf->sf_flags |= SF_INCONSISTENT;
473 scrub->os_full_speed = 1;
476 rc = osd_scrub_refresh_mapping(info, dev, fid, lid, ops);
478 if (scrub->os_in_prior)
479 sf->sf_items_updated_prior++;
481 sf->sf_items_updated++;
488 sf->sf_items_failed++;
489 if (sf->sf_pos_first_inconsistent == 0 ||
490 sf->sf_pos_first_inconsistent > lid->oii_ino)
491 sf->sf_pos_first_inconsistent = lid->oii_ino;
496 if (ops == DTO_INDEX_INSERT) {
497 mutex_unlock(&inode->i_mutex);
500 up_write(&scrub->os_rwsem);
503 LASSERT(!cfs_list_empty(&oii->oii_list));
505 spin_lock(&scrub->os_lock);
506 cfs_list_del_init(&oii->oii_list);
507 spin_unlock(&scrub->os_lock);
510 RETURN(sf->sf_param & SP_FAILOUT ? rc : 0);
513 static int osd_scrub_checkpoint(struct osd_scrub *scrub)
515 struct scrub_file *sf = &scrub->os_file;
518 if (likely(cfs_time_before(cfs_time_current(),
519 scrub->os_time_next_checkpoint) ||
520 scrub->os_new_checked == 0))
523 down_write(&scrub->os_rwsem);
524 sf->sf_items_checked += scrub->os_new_checked;
525 scrub->os_new_checked = 0;
526 sf->sf_pos_last_checkpoint = scrub->os_pos_current;
527 sf->sf_time_last_checkpoint = cfs_time_current_sec();
528 sf->sf_run_time += cfs_duration_sec(cfs_time_current() + HALF_SEC -
529 scrub->os_time_last_checkpoint);
530 rc = osd_scrub_file_store(scrub);
531 up_write(&scrub->os_rwsem);
536 static void osd_scrub_post(struct osd_scrub *scrub, int result)
538 struct scrub_file *sf = &scrub->os_file;
541 down_write(&scrub->os_rwsem);
542 spin_lock(&scrub->os_lock);
543 thread_set_flags(&scrub->os_thread, SVC_STOPPING);
544 spin_unlock(&scrub->os_lock);
545 if (scrub->os_new_checked > 0) {
546 sf->sf_items_checked += scrub->os_new_checked;
547 scrub->os_new_checked = 0;
548 sf->sf_pos_last_checkpoint = scrub->os_pos_current;
550 sf->sf_time_last_checkpoint = cfs_time_current_sec();
552 sf->sf_status = SS_COMPLETED;
553 memset(sf->sf_oi_bitmap, 0, SCRUB_OI_BITMAP_SIZE);
554 sf->sf_flags &= ~(SF_RECREATED | SF_INCONSISTENT |
555 SF_UPGRADE | SF_AUTO);
556 sf->sf_time_last_complete = sf->sf_time_last_checkpoint;
557 sf->sf_success_count++;
558 } else if (result == 0) {
559 if (scrub->os_paused)
560 sf->sf_status = SS_PAUSED;
562 sf->sf_status = SS_STOPPED;
564 sf->sf_status = SS_FAILED;
566 sf->sf_run_time += cfs_duration_sec(cfs_time_current() + HALF_SEC -
567 scrub->os_time_last_checkpoint);
568 result = osd_scrub_file_store(scrub);
570 CERROR("%.16s: fail to osd_scrub_post, rc = %d\n",
571 LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name,
573 up_write(&scrub->os_rwsem);
578 /* iteration engine */
580 struct osd_iit_param {
581 struct super_block *sb;
582 struct buffer_head *bitmap;
588 typedef int (*osd_iit_next_policy)(struct osd_thread_info *info,
589 struct osd_device *dev,
590 struct osd_iit_param *param,
591 struct osd_idmap_cache **oic,
594 typedef int (*osd_iit_exec_policy)(struct osd_thread_info *info,
595 struct osd_device *dev,
596 struct osd_iit_param *param,
597 struct osd_idmap_cache *oic,
598 int *noslot, int rc);
600 static int osd_iit_next(struct osd_iit_param *param, __u32 *pos)
602 param->offset = ldiskfs_find_next_bit(param->bitmap->b_data,
603 LDISKFS_INODES_PER_GROUP(param->sb), param->offset);
604 if (param->offset >= LDISKFS_INODES_PER_GROUP(param->sb)) {
605 *pos = 1 + (param->bg+1) * LDISKFS_INODES_PER_GROUP(param->sb);
606 return SCRUB_NEXT_BREAK;
608 *pos = param->gbase + param->offset;
613 static int osd_iit_iget(struct osd_thread_info *info, struct osd_device *dev,
614 struct lu_fid *fid, struct osd_inode_id *lid, __u32 pos,
615 struct super_block *sb, bool scrub)
617 struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
621 osd_id_gen(lid, pos, OSD_OII_NOGEN);
622 inode = osd_iget(info, dev, lid);
625 /* The inode may be removed after bitmap searching, or the
626 * file is new created without inode initialized yet. */
627 if (rc == -ENOENT || rc == -ESTALE)
628 return SCRUB_NEXT_CONTINUE;
630 CERROR("%.16s: fail to read inode, ino# = %u, rc = %d\n",
631 LDISKFS_SB(sb)->s_es->s_volume_name, pos, rc);
635 /* If the inode has no OI mapping, then it is special locally used,
636 * should be invisible to OI scrub or up layer LFSCK. */
637 if (ldiskfs_test_inode_state(inode, LDISKFS_STATE_LUSTRE_NO_OI)) {
639 return SCRUB_NEXT_CONTINUE;
643 ldiskfs_test_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB)) {
644 /* Only skip it for the first OI scrub accessing. */
645 ldiskfs_clear_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB);
647 return SCRUB_NEXT_NOSCRUB;
650 rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
652 if (fid_is_llog(&lma->lma_self_fid) ||
653 (!scrub && fid_is_internal(&lma->lma_self_fid)))
654 rc = SCRUB_NEXT_CONTINUE;
656 *fid = lma->lma_self_fid;
657 } else if (rc == -ENODATA) {
658 lu_igif_build(fid, inode->i_ino, inode->i_generation);
660 rc = SCRUB_NEXT_NOLMA;
668 static int osd_scrub_next(struct osd_thread_info *info, struct osd_device *dev,
669 struct osd_iit_param *param,
670 struct osd_idmap_cache **oic, int noslot)
672 struct osd_scrub *scrub = &dev->od_scrub;
673 struct ptlrpc_thread *thread = &scrub->os_thread;
675 struct osd_inode_id *lid;
678 if (OBD_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_DELAY) && cfs_fail_val > 0) {
679 struct l_wait_info lwi;
681 lwi = LWI_TIMEOUT(cfs_time_seconds(cfs_fail_val), NULL, NULL);
682 l_wait_event(thread->t_ctl_waitq,
683 !cfs_list_empty(&scrub->os_inconsistent_items) ||
684 !thread_is_running(thread),
688 if (OBD_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_CRASH)) {
689 spin_lock(&scrub->os_lock);
690 thread_set_flags(thread, SVC_STOPPING);
691 spin_unlock(&scrub->os_lock);
692 return SCRUB_NEXT_CRASH;
695 if (OBD_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_FATAL))
696 return SCRUB_NEXT_FATAL;
698 if (unlikely(!thread_is_running(thread)))
699 return SCRUB_NEXT_EXIT;
701 if (!cfs_list_empty(&scrub->os_inconsistent_items)) {
702 struct osd_inconsistent_item *oii;
704 oii = cfs_list_entry(scrub->os_inconsistent_items.next,
705 struct osd_inconsistent_item, oii_list);
706 *oic = &oii->oii_cache;
707 scrub->os_in_prior = 1;
712 return SCRUB_NEXT_WAIT;
714 rc = osd_iit_next(param, &scrub->os_pos_current);
718 *oic = &scrub->os_oic;
719 fid = &(*oic)->oic_fid;
720 lid = &(*oic)->oic_lid;
721 rc = osd_iit_iget(info, dev, fid, lid,
722 scrub->os_pos_current, param->sb, true);
726 static int osd_preload_next(struct osd_thread_info *info,
727 struct osd_device *dev, struct osd_iit_param *param,
728 struct osd_idmap_cache **oic, int noslot)
730 struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
731 struct osd_scrub *scrub;
732 struct ptlrpc_thread *thread;
735 rc = osd_iit_next(param, &ooc->ooc_pos_preload);
739 scrub = &dev->od_scrub;
740 thread = &scrub->os_thread;
741 if (thread_is_running(thread) &&
742 ooc->ooc_pos_preload >= scrub->os_pos_current)
743 return SCRUB_NEXT_EXIT;
745 rc = osd_iit_iget(info, dev,
746 &ooc->ooc_cache[ooc->ooc_producer_idx].oic_fid,
747 &ooc->ooc_cache[ooc->ooc_producer_idx].oic_lid,
748 ooc->ooc_pos_preload, param->sb, false);
749 /* If succeed, it needs to move forward; otherwise up layer LFSCK may
750 * ignore the failure, so it still need to skip the inode next time. */
751 ooc->ooc_pos_preload = param->gbase + ++(param->offset);
756 osd_scrub_wakeup(struct osd_scrub *scrub, struct osd_otable_it *it)
758 spin_lock(&scrub->os_lock);
759 if (osd_scrub_has_window(scrub, &it->ooi_cache) ||
760 !cfs_list_empty(&scrub->os_inconsistent_items) ||
761 it->ooi_waiting || !thread_is_running(&scrub->os_thread))
762 scrub->os_waiting = 0;
764 scrub->os_waiting = 1;
765 spin_unlock(&scrub->os_lock);
767 return !scrub->os_waiting;
770 static int osd_scrub_exec(struct osd_thread_info *info, struct osd_device *dev,
771 struct osd_iit_param *param,
772 struct osd_idmap_cache *oic, int *noslot, int rc)
774 struct l_wait_info lwi = { 0 };
775 struct osd_scrub *scrub = &dev->od_scrub;
776 struct scrub_file *sf = &scrub->os_file;
777 struct ptlrpc_thread *thread = &scrub->os_thread;
778 struct osd_otable_it *it = dev->od_otable_it;
779 struct osd_otable_cache *ooc = it ? &it->ooi_cache : NULL;
782 case SCRUB_NEXT_CONTINUE:
784 case SCRUB_NEXT_WAIT:
786 case SCRUB_NEXT_NOSCRUB:
787 down_write(&scrub->os_rwsem);
788 scrub->os_new_checked++;
789 sf->sf_items_noscrub++;
790 up_write(&scrub->os_rwsem);
794 rc = osd_scrub_check_update(info, dev, oic, rc);
798 rc = osd_scrub_checkpoint(scrub);
800 CERROR("%.16s: fail to checkpoint, pos = %u, rc = %d\n",
801 LDISKFS_SB(param->sb)->s_es->s_volume_name,
802 scrub->os_pos_current, rc);
803 /* Continue, as long as the scrub itself can go ahead. */
806 if (scrub->os_in_prior) {
807 scrub->os_in_prior = 0;
812 scrub->os_pos_current = param->gbase + ++(param->offset);
815 if (it != NULL && it->ooi_waiting &&
816 ooc->ooc_pos_preload < scrub->os_pos_current) {
817 spin_lock(&scrub->os_lock);
819 cfs_waitq_broadcast(&thread->t_ctl_waitq);
820 spin_unlock(&scrub->os_lock);
823 if (scrub->os_full_speed || rc == SCRUB_NEXT_CONTINUE)
826 if (osd_scrub_has_window(scrub, ooc)) {
831 l_wait_event(thread->t_ctl_waitq,
832 osd_scrub_wakeup(scrub, it),
835 if (osd_scrub_has_window(scrub, ooc))
842 static int osd_preload_exec(struct osd_thread_info *info,
843 struct osd_device *dev, struct osd_iit_param *param,
844 struct osd_idmap_cache *oic, int *noslot, int rc)
846 struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
849 ooc->ooc_cached_items++;
850 ooc->ooc_producer_idx = (ooc->ooc_producer_idx + 1) &
851 ~OSD_OTABLE_IT_CACHE_MASK;
853 return rc > 0 ? 0 : rc;
856 #define SCRUB_IT_ALL 1
857 #define SCRUB_IT_CRASH 2
859 static int osd_inode_iteration(struct osd_thread_info *info,
860 struct osd_device *dev, __u32 max, bool preload)
862 osd_iit_next_policy next;
863 osd_iit_exec_policy exec;
866 struct osd_iit_param param;
873 struct osd_scrub *scrub = &dev->od_scrub;
875 next = osd_scrub_next;
876 exec = osd_scrub_exec;
877 pos = &scrub->os_pos_current;
878 count = &scrub->os_new_checked;
880 struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
882 next = osd_preload_next;
883 exec = osd_preload_exec;
884 pos = &ooc->ooc_pos_preload;
885 count = &ooc->ooc_cached_items;
887 param.sb = osd_sb(dev);
888 limit = le32_to_cpu(LDISKFS_SB(param.sb)->s_es->s_inodes_count);
890 while (*pos <= limit && *count < max) {
891 struct osd_idmap_cache *oic = NULL;
893 param.bg = (*pos - 1) / LDISKFS_INODES_PER_GROUP(param.sb);
894 param.offset = (*pos - 1) % LDISKFS_INODES_PER_GROUP(param.sb);
895 param.gbase = 1 + param.bg * LDISKFS_INODES_PER_GROUP(param.sb);
896 param.bitmap = ldiskfs_read_inode_bitmap(param.sb, param.bg);
897 if (param.bitmap == NULL) {
898 CERROR("%.16s: fail to read bitmap for %u, "
899 "scrub will stop, urgent mode\n",
900 LDISKFS_SB(param.sb)->s_es->s_volume_name,
905 while (param.offset < LDISKFS_INODES_PER_GROUP(param.sb) &&
907 rc = next(info, dev, ¶m, &oic, noslot);
909 case SCRUB_NEXT_BREAK:
911 case SCRUB_NEXT_EXIT:
912 brelse(param.bitmap);
914 case SCRUB_NEXT_CRASH:
915 brelse(param.bitmap);
916 RETURN(SCRUB_IT_CRASH);
917 case SCRUB_NEXT_FATAL:
918 brelse(param.bitmap);
922 rc = exec(info, dev, ¶m, oic, &noslot, rc);
924 brelse(param.bitmap);
928 if (preload && dev->od_otable_it->ooi_stopping) {
929 brelse(param.bitmap);
935 brelse(param.bitmap);
937 if (preload && dev->od_otable_it->ooi_stopping)
942 RETURN(SCRUB_IT_ALL);
946 static int osd_otable_it_preload(const struct lu_env *env,
947 struct osd_otable_it *it)
949 struct osd_device *dev = it->ooi_dev;
950 struct osd_scrub *scrub = &dev->od_scrub;
951 struct osd_otable_cache *ooc = &it->ooi_cache;
955 rc = osd_inode_iteration(osd_oti_get(env), dev,
956 OSD_OTABLE_IT_CACHE_SIZE, true);
957 if (rc == SCRUB_IT_ALL)
958 it->ooi_all_cached = 1;
960 CDEBUG(D_LFSCK, "OSD pre-loaded: max = %u, preload = %u, rc = %d\n",
961 le32_to_cpu(LDISKFS_SB(osd_sb(dev))->s_es->s_inodes_count),
962 ooc->ooc_pos_preload, rc);
964 if (scrub->os_waiting && osd_scrub_has_window(scrub, ooc)) {
965 scrub->os_waiting = 0;
966 cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
969 RETURN(rc < 0 ? rc : ooc->ooc_cached_items);
972 static int osd_scrub_main(void *args)
975 struct osd_device *dev = (struct osd_device *)args;
976 struct osd_scrub *scrub = &dev->od_scrub;
977 struct ptlrpc_thread *thread = &scrub->os_thread;
978 struct super_block *sb = osd_sb(dev);
982 cfs_daemonize("OI_scrub");
983 rc = lu_env_init(&env, LCT_DT_THREAD);
985 CERROR("%.16s: OI scrub, fail to init env, rc = %d\n",
986 LDISKFS_SB(sb)->s_es->s_volume_name, rc);
990 rc = osd_scrub_prep(dev);
992 CERROR("%.16s: OI scrub, fail to scrub prep, rc = %d\n",
993 LDISKFS_SB(sb)->s_es->s_volume_name, rc);
997 if (!scrub->os_full_speed) {
998 struct l_wait_info lwi = { 0 };
999 struct osd_otable_it *it = dev->od_otable_it;
1000 struct osd_otable_cache *ooc = &it->ooi_cache;
1002 l_wait_event(thread->t_ctl_waitq,
1003 it->ooi_user_ready || !thread_is_running(thread),
1005 if (unlikely(!thread_is_running(thread)))
1008 LASSERT(scrub->os_pos_current >= ooc->ooc_pos_preload);
1009 scrub->os_pos_current = ooc->ooc_pos_preload;
1012 CDEBUG(D_LFSCK, "OI scrub: flags = 0x%x, pos = %u\n",
1013 scrub->os_start_flags, scrub->os_pos_current);
1015 rc = osd_inode_iteration(osd_oti_get(&env), dev, ~0U, false);
1016 if (unlikely(rc == SCRUB_IT_CRASH))
1017 GOTO(out, rc = -EINVAL);
1021 osd_scrub_post(scrub, rc);
1022 CDEBUG(D_LFSCK, "OI scrub: stop, rc = %d, pos = %u\n",
1023 rc, scrub->os_pos_current);
1026 while (!cfs_list_empty(&scrub->os_inconsistent_items)) {
1027 struct osd_inconsistent_item *oii;
1029 oii = cfs_list_entry(scrub->os_inconsistent_items.next,
1030 struct osd_inconsistent_item, oii_list);
1031 cfs_list_del_init(&oii->oii_list);
1037 spin_lock(&scrub->os_lock);
1038 thread_set_flags(thread, SVC_STOPPED);
1039 cfs_waitq_broadcast(&thread->t_ctl_waitq);
1040 spin_unlock(&scrub->os_lock);
1044 /* initial OI scrub */
1046 typedef int (*scandir_t)(struct osd_thread_info *, struct osd_device *,
1047 struct dentry *, filldir_t filldir);
1049 static int osd_ios_varfid_fill(void *buf, const char *name, int namelen,
1050 loff_t offset, __u64 ino, unsigned d_type);
1053 osd_ios_general_scan(struct osd_thread_info *info, struct osd_device *dev,
1054 struct dentry *dentry, filldir_t filldir);
1056 osd_ios_ROOT_scan(struct osd_thread_info *info, struct osd_device *dev,
1057 struct dentry *dentry, filldir_t filldir);
1060 osd_ios_OBJECTS_scan(struct osd_thread_info *info, struct osd_device *dev,
1061 struct dentry *dentry, filldir_t filldir);
1064 OLF_SCAN_SUBITEMS = 0x0001,
1065 OLF_HIDE_FID = 0x0002,
1066 OLF_SHOW_NAME = 0x0004,
1071 struct lu_fid olm_fid;
1073 scandir_t olm_scandir;
1074 filldir_t olm_filldir;
1077 /* Add the new introduced local files in the list in the future. */
1078 static const struct osd_lf_map osd_lf_maps[] = {
1080 { CATLIST, { FID_SEQ_LOCAL_FILE, LLOG_CATALOGS_OID, 0 }, OLF_SHOW_NAME,
1084 { MOUNT_CONFIGS_DIR, { FID_SEQ_LOCAL_FILE, MGS_CONFIGS_OID, 0 },
1085 OLF_SCAN_SUBITEMS, osd_ios_general_scan,
1086 osd_ios_varfid_fill },
1088 /* NIDTBL_VERSIONS */
1089 { MGS_NIDTBL_DIR, { 0, 0, 0 }, OLF_SCAN_SUBITEMS,
1090 osd_ios_general_scan, osd_ios_varfid_fill },
1093 { "PENDING", { FID_SEQ_LOCAL_FILE, MDD_ORPHAN_OID, 0 }, 0, NULL, NULL },
1096 { "ROOT", { FID_SEQ_ROOT, 1, 0 },
1097 OLF_SCAN_SUBITEMS | OLF_HIDE_FID, osd_ios_ROOT_scan, NULL },
1099 /* changelog_catalog */
1100 { CHANGELOG_CATALOG, { 0, 0, 0 }, 0, NULL, NULL },
1102 /* changelog_users */
1103 { CHANGELOG_USERS, { 0, 0, 0 }, 0, NULL, NULL },
1106 { "fld", { FID_SEQ_LOCAL_FILE, FLD_INDEX_OID, 0 }, OLF_SHOW_NAME,
1110 { LAST_RCVD, { FID_SEQ_LOCAL_FILE, LAST_RECV_OID, 0 }, OLF_SHOW_NAME,
1113 /* lfsck_bookmark */
1114 { "lfsck_bookmark", { FID_SEQ_LOCAL_FILE, LFSCK_BOOKMARK_OID, 0 }, 0,
1118 { LOV_OBJID, { FID_SEQ_LOCAL_FILE, MDD_LOV_OBJ_OID, 0 }, OLF_SHOW_NAME,
1122 { LOV_OBJSEQ, { FID_SEQ_LOCAL_FILE, MDD_LOV_OBJ_OSEQ, 0 },
1123 OLF_SHOW_NAME, NULL, NULL },
1126 { QMT_DIR, { 0, 0, 0 }, OLF_SCAN_SUBITEMS,
1127 osd_ios_general_scan, osd_ios_varfid_fill },
1130 { QSD_DIR, { 0, 0, 0 }, OLF_SCAN_SUBITEMS,
1131 osd_ios_general_scan, osd_ios_varfid_fill },
1133 /* seq-200000003-lastid */
1134 { "seq-200000003-lastid", { FID_SEQ_LOCAL_NAME, 1, 0 }, 0,
1138 { "seq_ctl", { FID_SEQ_LOCAL_FILE, FID_SEQ_CTL_OID, 0 },
1139 OLF_SHOW_NAME, NULL, NULL },
1142 { "seq_srv", { FID_SEQ_LOCAL_FILE, FID_SEQ_SRV_OID, 0 },
1143 OLF_SHOW_NAME, NULL, NULL },
1146 { "LAST_GROUP", { FID_SEQ_LOCAL_FILE, OFD_LAST_GROUP_OID, 0 },
1147 OLF_SHOW_NAME, NULL, NULL },
1150 { HEALTH_CHECK, { FID_SEQ_LOCAL_FILE, OFD_HEALTH_CHECK_OID, 0 },
1151 OLF_SHOW_NAME, NULL, NULL },
1153 /* lfsck_namespace */
1154 { "lfsck_namespace", { FID_SEQ_LOCAL_FILE, LFSCK_BOOKMARK_OID, 0 }, 0,
1157 /* OBJECTS, upgrade from old device */
1158 { OBJECTS, { 0, 0, 0 }, OLF_SCAN_SUBITEMS, osd_ios_OBJECTS_scan, NULL },
1160 /* lquota_v2.user, upgrade from old device */
1161 { "lquota_v2.user", { 0, 0, 0 }, 0, NULL, NULL },
1163 /* lquota_v2.group, upgrade from old device */
1164 { "lquota_v2.group", { 0, 0, 0 }, 0, NULL, NULL },
1166 { NULL, { 0, 0, 0 }, 0, NULL, NULL }
1169 struct osd_ios_item {
1170 cfs_list_t oii_list;
1171 struct dentry *oii_dentry;
1172 scandir_t oii_scandir;
1173 filldir_t oii_filldir;
1176 struct osd_ios_filldir_buf {
1177 struct osd_thread_info *oifb_info;
1178 struct osd_device *oifb_dev;
1179 struct dentry *oifb_dentry;
1182 static inline struct dentry *
1183 osd_ios_lookup_one_len(const char *name, struct dentry *parent, int namelen)
1185 struct dentry *dentry;
1187 dentry = ll_lookup_one_len(name, parent, namelen);
1188 if (!IS_ERR(dentry) && dentry->d_inode == NULL) {
1190 return ERR_PTR(-ENOENT);
1197 osd_ios_llogname2fid(struct lu_fid *fid, const char *name, int namelen)
1202 fid->f_seq = FID_SEQ_LLOG;
1204 id = id * 10 + name[i++] - '0';
1206 fid->f_oid = id & 0x00000000ffffffffULL;
1207 fid->f_ver = id >> 32;
1211 osd_ios_Oname2fid(struct lu_fid *fid, const char *name, int namelen)
1217 seq = seq * 10 + name[i++] - '0';
1219 lu_last_id_fid(fid, seq);
1223 osd_ios_new_item(struct osd_device *dev, struct dentry *dentry,
1224 scandir_t scandir, filldir_t filldir)
1226 struct osd_ios_item *item;
1228 OBD_ALLOC_PTR(item);
1232 CFS_INIT_LIST_HEAD(&item->oii_list);
1233 item->oii_dentry = dget(dentry);
1234 item->oii_scandir = scandir;
1235 item->oii_filldir = filldir;
1236 cfs_list_add_tail(&item->oii_list, &dev->od_ios_list);
1241 * osd_ios_scan_one() - check/fix LMA FID and OI entry for one inode
1243 * The passed \a inode's \a fid is verified against the LMA FID. If the \a fid
1244 * is NULL or is empty the IGIF FID is used. The FID is verified in the OI to
1245 * reference the inode, or fixed if it is missing or references another inode.
1248 osd_ios_scan_one(struct osd_thread_info *info, struct osd_device *dev,
1249 struct inode *inode, const struct lu_fid *fid, int flags)
1251 struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
1252 struct osd_inode_id *id = &info->oti_id;
1253 struct osd_inode_id *id2 = &info->oti_id2;
1254 struct osd_scrub *scrub = &dev->od_scrub;
1255 struct scrub_file *sf = &scrub->os_file;
1260 rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
1261 if (rc != 0 && rc != -ENODATA)
1264 osd_id_gen(id, inode->i_ino, inode->i_generation);
1265 if (rc == -ENODATA) {
1266 if (fid == NULL || fid_is_zero(fid) || flags & OLF_HIDE_FID)
1267 lu_igif_build(&tfid, inode->i_ino, inode->i_generation);
1270 rc = osd_ea_fid_set(info, inode, &tfid, 0);
1274 tfid = lma->lma_self_fid;
1277 rc = __osd_oi_lookup(info, dev, &tfid, id2);
1282 rc = osd_scrub_refresh_mapping(info, dev, &tfid, id,
1287 if (osd_id_eq_strict(id, id2))
1290 if (!(sf->sf_flags & SF_INCONSISTENT)) {
1291 osd_scrub_file_reset(scrub,
1292 LDISKFS_SB(osd_sb(dev))->s_es->s_uuid,
1294 rc = osd_scrub_file_store(scrub);
1299 rc = osd_scrub_refresh_mapping(info, dev, &tfid, id, DTO_INDEX_UPDATE);
1304 static int osd_ios_varfid_fill(void *buf, const char *name, int namelen,
1305 loff_t offset, __u64 ino, unsigned d_type)
1307 struct osd_ios_filldir_buf *fill_buf = buf;
1308 struct osd_device *dev = fill_buf->oifb_dev;
1309 struct dentry *child;
1313 /* skip any '.' started names */
1317 child = osd_ios_lookup_one_len(name, fill_buf->oifb_dentry, namelen);
1319 RETURN(PTR_ERR(child));
1321 rc = osd_ios_scan_one(fill_buf->oifb_info, dev, child->d_inode,
1323 if (rc == 0 && S_ISDIR(child->d_inode->i_mode))
1324 rc = osd_ios_new_item(dev, child, osd_ios_general_scan,
1325 osd_ios_varfid_fill);
1331 static int osd_ios_root_fill(void *buf, const char *name, int namelen,
1332 loff_t offset, __u64 ino, unsigned d_type)
1334 struct osd_ios_filldir_buf *fill_buf = buf;
1335 struct osd_device *dev = fill_buf->oifb_dev;
1336 const struct osd_lf_map *map;
1337 struct dentry *child;
1341 /* skip any '.' started names */
1345 for (map = osd_lf_maps; map->olm_name != NULL; map++) {
1346 if (strlen(map->olm_name) != namelen)
1349 if (strncmp(map->olm_name, name, namelen) == 0)
1353 if (map->olm_name == NULL)
1356 child = osd_ios_lookup_one_len(name, fill_buf->oifb_dentry, namelen);
1358 RETURN(PTR_ERR(child));
1360 rc = osd_ios_scan_one(fill_buf->oifb_info, dev, child->d_inode,
1361 &map->olm_fid, map->olm_flags);
1362 if (rc == 0 && map->olm_flags & OLF_SCAN_SUBITEMS)
1363 rc = osd_ios_new_item(dev, child, map->olm_scandir,
1371 osd_ios_general_scan(struct osd_thread_info *info, struct osd_device *dev,
1372 struct dentry *dentry, filldir_t filldir)
1374 struct osd_ios_filldir_buf buf = { info, dev, dentry };
1375 struct file *filp = &info->oti_it_ea.oie_file;
1376 struct inode *inode = dentry->d_inode;
1377 const struct file_operations *fops = inode->i_fop;
1381 LASSERT(filldir != NULL);
1384 filp->f_dentry = dentry;
1385 filp->f_mode = FMODE_64BITHASH;
1386 filp->f_mapping = inode->i_mapping;
1388 filp->private_data = NULL;
1390 rc = fops->readdir(filp, &buf, filldir);
1391 fops->release(inode, filp);
1397 osd_ios_ROOT_scan(struct osd_thread_info *info, struct osd_device *dev,
1398 struct dentry *dentry, filldir_t filldir)
1400 struct osd_scrub *scrub = &dev->od_scrub;
1401 struct scrub_file *sf = &scrub->os_file;
1402 struct dentry *child;
1406 /* It is existing MDT device. */
1407 dev->od_handle_nolma = 1;
1408 child = osd_ios_lookup_one_len(dot_lustre_name, dentry,
1409 strlen(dot_lustre_name));
1410 if (IS_ERR(child)) {
1411 rc = PTR_ERR(child);
1412 if (rc == -ENOENT) {
1413 /* It is 1.8 MDT device. */
1414 if (!(sf->sf_flags & SF_UPGRADE)) {
1415 osd_scrub_file_reset(scrub,
1416 LDISKFS_SB(osd_sb(dev))->s_es->s_uuid,
1418 rc = osd_scrub_file_store(scrub);
1424 rc = osd_ios_scan_one(info, dev, child->d_inode, NULL, 0);
1432 osd_ios_OBJECTS_scan(struct osd_thread_info *info, struct osd_device *dev,
1433 struct dentry *dentry, filldir_t filldir)
1435 struct dentry *child;
1439 child = osd_ios_lookup_one_len(ADMIN_USR, dentry, strlen(ADMIN_USR));
1440 if (!IS_ERR(child)) {
1441 rc = osd_ios_scan_one(info, dev, child->d_inode, NULL, 0);
1444 rc = PTR_ERR(child);
1447 if (rc != 0 && rc != -ENOENT)
1450 child = osd_ios_lookup_one_len(ADMIN_GRP, dentry, strlen(ADMIN_GRP));
1451 if (!IS_ERR(child)) {
1452 rc = osd_ios_scan_one(info, dev, child->d_inode, NULL, 0);
1455 rc = PTR_ERR(child);
1464 static int osd_initial_OI_scrub(struct osd_thread_info *info,
1465 struct osd_device *dev)
1467 struct osd_ios_item *item = NULL;
1468 scandir_t scandir = osd_ios_general_scan;
1469 filldir_t filldir = osd_ios_root_fill;
1470 struct dentry *dentry = osd_sb(dev)->s_root;
1475 rc = scandir(info, dev, dentry, filldir);
1477 dput(item->oii_dentry);
1484 if (cfs_list_empty(&dev->od_ios_list))
1487 item = cfs_list_entry(dev->od_ios_list.next,
1488 struct osd_ios_item, oii_list);
1489 cfs_list_del_init(&item->oii_list);
1491 LASSERT(item->oii_scandir != NULL);
1492 scandir = item->oii_scandir;
1493 filldir = item->oii_filldir;
1494 dentry = item->oii_dentry;
1497 while (!cfs_list_empty(&dev->od_ios_list)) {
1498 item = cfs_list_entry(dev->od_ios_list.next,
1499 struct osd_ios_item, oii_list);
1500 cfs_list_del_init(&item->oii_list);
1501 dput(item->oii_dentry);
1508 char *osd_lf_fid2name(const struct lu_fid *fid)
1510 const struct osd_lf_map *map = osd_lf_maps;
1512 while (map->olm_name != NULL) {
1513 if (!lu_fid_eq(fid, &map->olm_fid)) {
1518 if (map->olm_flags & OLF_SHOW_NAME)
1519 return map->olm_name;
1527 /* OI scrub start/stop */
1529 static int do_osd_scrub_start(struct osd_device *dev, __u32 flags)
1531 struct osd_scrub *scrub = &dev->od_scrub;
1532 struct ptlrpc_thread *thread = &scrub->os_thread;
1533 struct l_wait_info lwi = { 0 };
1538 /* os_lock: sync status between stop and scrub thread */
1539 spin_lock(&scrub->os_lock);
1540 if (thread_is_running(thread)) {
1541 spin_unlock(&scrub->os_lock);
1543 } else if (unlikely(thread_is_stopping(thread))) {
1544 spin_unlock(&scrub->os_lock);
1545 l_wait_event(thread->t_ctl_waitq,
1546 thread_is_stopped(thread),
1550 spin_unlock(&scrub->os_lock);
1552 if (scrub->os_file.sf_status == SS_COMPLETED)
1555 scrub->os_start_flags = flags;
1556 thread_set_flags(thread, 0);
1557 rc = cfs_create_thread(osd_scrub_main, dev, 0);
1559 CERROR("%.16s: cannot start iteration thread, rc = %d\n",
1560 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, rc);
1564 l_wait_event(thread->t_ctl_waitq,
1565 thread_is_running(thread) || thread_is_stopped(thread),
1571 int osd_scrub_start(struct osd_device *dev)
1576 /* od_otable_mutex: prevent curcurrent start/stop */
1577 mutex_lock(&dev->od_otable_mutex);
1578 rc = do_osd_scrub_start(dev, SS_AUTO);
1579 mutex_unlock(&dev->od_otable_mutex);
1581 RETURN(rc == -EALREADY ? 0 : rc);
1584 static void do_osd_scrub_stop(struct osd_scrub *scrub)
1586 struct ptlrpc_thread *thread = &scrub->os_thread;
1587 struct l_wait_info lwi = { 0 };
1589 /* os_lock: sync status between stop and scrub thread */
1590 spin_lock(&scrub->os_lock);
1591 if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
1592 thread_set_flags(thread, SVC_STOPPING);
1593 spin_unlock(&scrub->os_lock);
1594 cfs_waitq_broadcast(&thread->t_ctl_waitq);
1595 l_wait_event(thread->t_ctl_waitq,
1596 thread_is_stopped(thread),
1598 /* Do not skip the last lock/unlock, which can guarantee that
1599 * the caller cannot return until the OI scrub thread exit. */
1600 spin_lock(&scrub->os_lock);
1602 spin_unlock(&scrub->os_lock);
1605 static void osd_scrub_stop(struct osd_device *dev)
1607 /* od_otable_mutex: prevent curcurrent start/stop */
1608 mutex_lock(&dev->od_otable_mutex);
1609 dev->od_scrub.os_paused = 1;
1610 do_osd_scrub_stop(&dev->od_scrub);
1611 mutex_unlock(&dev->od_otable_mutex);
1614 /* OI scrub setup/cleanup */
1616 static const char osd_scrub_name[] = "OI_scrub";
1618 int osd_scrub_setup(const struct lu_env *env, struct osd_device *dev)
1620 struct osd_thread_info *info = osd_oti_get(env);
1621 struct osd_scrub *scrub = &dev->od_scrub;
1622 struct lvfs_run_ctxt *ctxt = &scrub->os_ctxt;
1623 struct scrub_file *sf = &scrub->os_file;
1624 struct super_block *sb = osd_sb(dev);
1625 struct ldiskfs_super_block *es = LDISKFS_SB(sb)->s_es;
1626 struct lvfs_run_ctxt saved;
1632 memset(scrub, 0, sizeof(*scrub));
1633 OBD_SET_CTXT_MAGIC(ctxt);
1634 ctxt->pwdmnt = dev->od_mnt;
1635 ctxt->pwd = dev->od_mnt->mnt_root;
1636 ctxt->fs = get_ds();
1638 cfs_waitq_init(&scrub->os_thread.t_ctl_waitq);
1639 init_rwsem(&scrub->os_rwsem);
1640 spin_lock_init(&scrub->os_lock);
1641 CFS_INIT_LIST_HEAD(&scrub->os_inconsistent_items);
1643 push_ctxt(&saved, ctxt, NULL);
1644 filp = filp_open(osd_scrub_name, O_RDWR | O_CREAT, 0644);
1646 RETURN(PTR_ERR(filp));
1648 scrub->os_inode = igrab(filp->f_dentry->d_inode);
1649 filp_close(filp, 0);
1650 pop_ctxt(&saved, ctxt, NULL);
1651 ldiskfs_set_inode_state(scrub->os_inode,
1652 LDISKFS_STATE_LUSTRE_NO_OI);
1654 rc = osd_scrub_file_load(scrub);
1655 if (rc == -ENOENT) {
1656 osd_scrub_file_init(scrub, es->s_uuid);
1658 } else if (rc != 0) {
1661 if (memcmp(sf->sf_uuid, es->s_uuid, 16) != 0) {
1662 osd_scrub_file_reset(scrub, es->s_uuid,SF_INCONSISTENT);
1664 } else if (sf->sf_status == SS_SCANNING) {
1665 sf->sf_status = SS_CRASHED;
1670 if (sf->sf_pos_last_checkpoint != 0)
1671 scrub->os_pos_current = sf->sf_pos_last_checkpoint + 1;
1673 scrub->os_pos_current = LDISKFS_FIRST_INO(sb) + 1;
1676 rc = osd_scrub_file_store(scrub);
1681 /* Initialize OI files. */
1682 rc = osd_oi_init(info, dev);
1686 rc = osd_initial_OI_scrub(info, dev);
1687 if (rc == 0 && !dev->od_noscrub &&
1688 ((sf->sf_status == SS_PAUSED) ||
1689 (sf->sf_status == SS_CRASHED &&
1690 sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT | SF_UPGRADE |
1692 (sf->sf_status == SS_INIT &&
1693 sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT | SF_UPGRADE))))
1694 rc = osd_scrub_start(dev);
1699 void osd_scrub_cleanup(const struct lu_env *env, struct osd_device *dev)
1701 struct osd_scrub *scrub = &dev->od_scrub;
1703 LASSERT(dev->od_otable_it == NULL);
1705 if (scrub->os_inode != NULL) {
1706 osd_scrub_stop(dev);
1707 iput(scrub->os_inode);
1708 scrub->os_inode = NULL;
1710 if (dev->od_oi_table != NULL)
1711 osd_oi_fini(osd_oti_get(env), dev);
1714 /* object table based iteration APIs */
1716 static struct dt_it *osd_otable_it_init(const struct lu_env *env,
1717 struct dt_object *dt, __u32 attr,
1718 struct lustre_capa *capa)
1720 enum dt_otable_it_flags flags = attr >> DT_OTABLE_IT_FLAGS_SHIFT;
1721 enum dt_otable_it_valid valid = attr & ~DT_OTABLE_IT_FLAGS_MASK;
1722 struct osd_device *dev = osd_dev(dt->do_lu.lo_dev);
1723 struct osd_scrub *scrub = &dev->od_scrub;
1724 struct osd_otable_it *it;
1729 /* od_otable_mutex: prevent curcurrent init/fini */
1730 mutex_lock(&dev->od_otable_mutex);
1731 if (dev->od_otable_it != NULL)
1732 GOTO(out, it = ERR_PTR(-EALREADY));
1736 GOTO(out, it = ERR_PTR(-ENOMEM));
1738 dev->od_otable_it = it;
1740 it->ooi_pid = cfs_curproc_pid();
1741 it->ooi_cache.ooc_consumer_idx = -1;
1742 if (flags & DOIF_OUTUSED)
1743 it->ooi_used_outside = 1;
1745 if (flags & DOIF_RESET)
1748 if (valid & DOIV_ERROR_HANDLE) {
1749 if (flags & DOIF_FAILOUT)
1750 start |= SS_SET_FAILOUT;
1752 start |= SS_CLEAR_FAILOUT;
1755 rc = do_osd_scrub_start(dev, start);
1756 if (rc < 0 && rc != -EALREADY) {
1757 dev->od_otable_it = NULL;
1759 GOTO(out, it = ERR_PTR(rc));
1762 it->ooi_cache.ooc_pos_preload = scrub->os_pos_current;
1767 mutex_unlock(&dev->od_otable_mutex);
1768 return (struct dt_it *)it;
1771 static void osd_otable_it_fini(const struct lu_env *env, struct dt_it *di)
1773 struct osd_otable_it *it = (struct osd_otable_it *)di;
1774 struct osd_device *dev = it->ooi_dev;
1776 /* od_otable_mutex: prevent curcurrent init/fini */
1777 mutex_lock(&dev->od_otable_mutex);
1778 do_osd_scrub_stop(&dev->od_scrub);
1779 LASSERT(dev->od_otable_it == it);
1781 dev->od_otable_it = NULL;
1782 mutex_unlock(&dev->od_otable_mutex);
1786 static int osd_otable_it_get(const struct lu_env *env,
1787 struct dt_it *di, const struct dt_key *key)
1795 * Sometimes the otable-based iteration driver (LFSCK) may be blocked in OSD
1796 * layer when someone wants to stop/pause the iteration. Under such case, we
1797 * need some mechanism to notify the event and wakeup the blocker.
1799 static void osd_otable_it_put(const struct lu_env *env, struct dt_it *di)
1801 struct osd_otable_it *it = (struct osd_otable_it *)di;
1802 struct osd_device *dev = it->ooi_dev;
1804 /* od_otable_mutex: prevent curcurrent init/fini */
1805 mutex_lock(&dev->od_otable_mutex);
1806 if (it->ooi_pid == cfs_curproc_pid()) {
1807 dev->od_scrub.os_paused = 1;
1809 struct ptlrpc_thread *thread = &dev->od_scrub.os_thread;
1811 it->ooi_stopping = 1;
1812 if (it->ooi_waiting)
1813 cfs_waitq_broadcast(&thread->t_ctl_waitq);
1815 mutex_unlock(&dev->od_otable_mutex);
1819 osd_otable_it_wakeup(struct osd_scrub *scrub, struct osd_otable_it *it)
1821 spin_lock(&scrub->os_lock);
1822 if (it->ooi_cache.ooc_pos_preload < scrub->os_pos_current ||
1823 scrub->os_waiting || it->ooi_stopping ||
1824 !thread_is_running(&scrub->os_thread))
1825 it->ooi_waiting = 0;
1827 it->ooi_waiting = 1;
1828 spin_unlock(&scrub->os_lock);
1830 return !it->ooi_waiting;
1833 static int osd_otable_it_next(const struct lu_env *env, struct dt_it *di)
1835 struct osd_otable_it *it = (struct osd_otable_it *)di;
1836 struct osd_device *dev = it->ooi_dev;
1837 struct osd_scrub *scrub = &dev->od_scrub;
1838 struct osd_otable_cache *ooc = &it->ooi_cache;
1839 struct ptlrpc_thread *thread = &scrub->os_thread;
1840 struct l_wait_info lwi = { 0 };
1844 LASSERT(it->ooi_user_ready);
1847 if (!thread_is_running(thread) && !it->ooi_used_outside)
1850 if (ooc->ooc_cached_items > 0) {
1851 ooc->ooc_cached_items--;
1852 ooc->ooc_consumer_idx = (ooc->ooc_consumer_idx + 1) &
1853 ~OSD_OTABLE_IT_CACHE_MASK;
1857 if (it->ooi_all_cached) {
1858 l_wait_event(thread->t_ctl_waitq,
1859 !thread_is_running(thread),
1864 if (scrub->os_waiting && osd_scrub_has_window(scrub, ooc)) {
1865 spin_lock(&scrub->os_lock);
1866 scrub->os_waiting = 0;
1867 cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
1868 spin_unlock(&scrub->os_lock);
1871 if (it->ooi_cache.ooc_pos_preload >= scrub->os_pos_current)
1872 l_wait_event(thread->t_ctl_waitq,
1873 osd_otable_it_wakeup(scrub, it),
1876 if (!thread_is_running(thread) && !it->ooi_used_outside)
1879 if (it->ooi_stopping)
1882 rc = osd_otable_it_preload(env, it);
1889 static struct dt_key *osd_otable_it_key(const struct lu_env *env,
1890 const struct dt_it *di)
1895 static int osd_otable_it_key_size(const struct lu_env *env,
1896 const struct dt_it *di)
1898 return sizeof(__u64);
1901 static int osd_otable_it_rec(const struct lu_env *env, const struct dt_it *di,
1902 struct dt_rec *rec, __u32 attr)
1904 struct osd_otable_it *it = (struct osd_otable_it *)di;
1905 struct osd_otable_cache *ooc = &it->ooi_cache;
1907 *(struct lu_fid *)rec = ooc->ooc_cache[ooc->ooc_consumer_idx].oic_fid;
1909 /* Filter out Invald FID already. */
1910 LASSERTF(fid_is_sane((struct lu_fid *)rec),
1911 "Invalid FID "DFID", p_idx = %d, c_idx = %d\n",
1912 PFID((struct lu_fid *)rec),
1913 ooc->ooc_producer_idx, ooc->ooc_consumer_idx);
1918 static __u64 osd_otable_it_store(const struct lu_env *env,
1919 const struct dt_it *di)
1921 struct osd_otable_it *it = (struct osd_otable_it *)di;
1922 struct osd_otable_cache *ooc = &it->ooi_cache;
1925 if (it->ooi_user_ready)
1926 hash = ooc->ooc_pos_preload;
1927 else if (likely(ooc->ooc_consumer_idx != -1))
1928 hash = ooc->ooc_cache[ooc->ooc_consumer_idx].oic_lid.oii_ino;
1935 * Set the OSD layer iteration start position as the specified hash.
1937 static int osd_otable_it_load(const struct lu_env *env,
1938 const struct dt_it *di, __u64 hash)
1940 struct osd_otable_it *it = (struct osd_otable_it *)di;
1941 struct osd_device *dev = it->ooi_dev;
1942 struct osd_otable_cache *ooc = &it->ooi_cache;
1943 struct osd_scrub *scrub = &dev->od_scrub;
1947 /* Forbid to set iteration position after iteration started. */
1948 if (it->ooi_user_ready)
1951 if (hash > OSD_OTABLE_MAX_HASH)
1952 hash = OSD_OTABLE_MAX_HASH;
1954 /* Skip the one that has been processed last time. */
1955 if (ooc->ooc_pos_preload > hash)
1956 ooc->ooc_pos_preload = hash;
1958 if (ooc->ooc_pos_preload <= LDISKFS_FIRST_INO(osd_sb(dev)))
1959 ooc->ooc_pos_preload = LDISKFS_FIRST_INO(osd_sb(dev)) + 1;
1961 it->ooi_user_ready = 1;
1962 if (!scrub->os_full_speed)
1963 cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
1965 /* Unplug OSD layer iteration by the first next() call. */
1966 rc = osd_otable_it_next(env, (struct dt_it *)it);
1971 static int osd_otable_it_key_rec(const struct lu_env *env,
1972 const struct dt_it *di, void *key_rec)
1977 const struct dt_index_operations osd_otable_ops = {
1979 .init = osd_otable_it_init,
1980 .fini = osd_otable_it_fini,
1981 .get = osd_otable_it_get,
1982 .put = osd_otable_it_put,
1983 .next = osd_otable_it_next,
1984 .key = osd_otable_it_key,
1985 .key_size = osd_otable_it_key_size,
1986 .rec = osd_otable_it_rec,
1987 .store = osd_otable_it_store,
1988 .load = osd_otable_it_load,
1989 .key_rec = osd_otable_it_key_rec,
1993 /* high priority inconsistent items list APIs */
1995 int osd_oii_insert(struct osd_device *dev, struct osd_idmap_cache *oic,
1998 struct osd_inconsistent_item *oii;
1999 struct osd_scrub *scrub = &dev->od_scrub;
2000 struct ptlrpc_thread *thread = &scrub->os_thread;
2005 if (unlikely(oii == NULL))
2008 CFS_INIT_LIST_HEAD(&oii->oii_list);
2009 oii->oii_cache = *oic;
2010 oii->oii_insert = insert;
2012 spin_lock(&scrub->os_lock);
2013 if (unlikely(!thread_is_running(thread))) {
2014 spin_unlock(&scrub->os_lock);
2019 if (cfs_list_empty(&scrub->os_inconsistent_items))
2021 cfs_list_add_tail(&oii->oii_list, &scrub->os_inconsistent_items);
2022 spin_unlock(&scrub->os_lock);
2025 cfs_waitq_broadcast(&thread->t_ctl_waitq);
2030 int osd_oii_lookup(struct osd_device *dev, const struct lu_fid *fid,
2031 struct osd_inode_id *id)
2033 struct osd_scrub *scrub = &dev->od_scrub;
2034 struct osd_inconsistent_item *oii;
2037 spin_lock(&scrub->os_lock);
2038 cfs_list_for_each_entry(oii, &scrub->os_inconsistent_items, oii_list) {
2039 if (lu_fid_eq(fid, &oii->oii_cache.oic_fid)) {
2040 *id = oii->oii_cache.oic_lid;
2041 spin_unlock(&scrub->os_lock);
2045 spin_unlock(&scrub->os_lock);
2052 static const char *scrub_status_names[] = {
2063 static const char *scrub_flags_names[] = {
2071 static const char *scrub_param_names[] = {
2076 static int scrub_bits_dump(char **buf, int *len, int bits, const char *names[],
2084 rc = snprintf(*buf, *len, "%s:%c", prefix, bits != 0 ? ' ' : '\n');
2090 for (i = 0, flag = 1; bits != 0; i++, flag = 1 << i) {
2093 rc = snprintf(*buf, *len, "%s%c", names[i],
2094 bits != 0 ? ',' : '\n');
2105 static int scrub_time_dump(char **buf, int *len, __u64 time, const char *prefix)
2110 rc = snprintf(*buf, *len, "%s: "LPU64" seconds\n", prefix,
2111 cfs_time_current_sec() - time);
2113 rc = snprintf(*buf, *len, "%s: N/A\n", prefix);
2122 static int scrub_pos_dump(char **buf, int *len, __u64 pos, const char *prefix)
2127 rc = snprintf(*buf, *len, "%s: "LPU64"\n", prefix, pos);
2129 rc = snprintf(*buf, *len, "%s: N/A\n", prefix);
2138 int osd_scrub_dump(struct osd_device *dev, char *buf, int len)
2140 struct osd_scrub *scrub = &dev->od_scrub;
2141 struct scrub_file *sf = &scrub->os_file;
2148 down_read(&scrub->os_rwsem);
2149 rc = snprintf(buf, len,
2154 sf->sf_magic, (int)sf->sf_oi_count,
2155 scrub_status_names[sf->sf_status]);
2161 rc = scrub_bits_dump(&buf, &len, sf->sf_flags, scrub_flags_names,
2166 rc = scrub_bits_dump(&buf, &len, sf->sf_param, scrub_param_names,
2171 rc = scrub_time_dump(&buf, &len, sf->sf_time_last_complete,
2172 "time_since_last_completed");
2176 rc = scrub_time_dump(&buf, &len, sf->sf_time_latest_start,
2177 "time_since_latest_start");
2181 rc = scrub_time_dump(&buf, &len, sf->sf_time_last_checkpoint,
2182 "time_since_last_checkpoint");
2186 rc = scrub_pos_dump(&buf, &len, sf->sf_pos_latest_start,
2187 "latest_start_position");
2191 rc = scrub_pos_dump(&buf, &len, sf->sf_pos_last_checkpoint,
2192 "last_checkpoint_position");
2196 rc = scrub_pos_dump(&buf, &len, sf->sf_pos_first_inconsistent,
2197 "first_failure_position");
2201 checked = sf->sf_items_checked + scrub->os_new_checked;
2202 rc = snprintf(buf, len,
2203 "checked: "LPU64"\n"
2204 "updated: "LPU64"\n"
2206 "prior_updated: "LPU64"\n"
2207 "noscrub: "LPU64"\n"
2209 "success_count: %u\n",
2210 checked, sf->sf_items_updated, sf->sf_items_failed,
2211 sf->sf_items_updated_prior, sf->sf_items_noscrub,
2212 sf->sf_items_igif, sf->sf_success_count);
2219 if (thread_is_running(&scrub->os_thread)) {
2220 cfs_duration_t duration = cfs_time_current() -
2221 scrub->os_time_last_checkpoint;
2222 __u64 new_checked = scrub->os_new_checked * CFS_HZ;
2223 __u32 rtime = sf->sf_run_time +
2224 cfs_duration_sec(duration + HALF_SEC);
2227 do_div(new_checked, duration);
2229 do_div(speed, rtime);
2230 rc = snprintf(buf, len,
2231 "run_time: %u seconds\n"
2232 "average_speed: "LPU64" objects/sec\n"
2233 "real-time_speed: "LPU64" objects/sec\n"
2234 "current_position: %u\n",
2235 rtime, speed, new_checked, scrub->os_pos_current);
2237 if (sf->sf_run_time != 0)
2238 do_div(speed, sf->sf_run_time);
2239 rc = snprintf(buf, len,
2240 "run_time: %u seconds\n"
2241 "average_speed: "LPU64" objects/sec\n"
2242 "real-time_speed: N/A\n"
2243 "current_position: N/A\n",
2244 sf->sf_run_time, speed);
2254 up_read(&scrub->os_rwsem);