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;
83 * update/insert/delete the specified OI mapping (@fid @id) according to the ops
85 * \retval 1, changed nothing
86 * \retval 0, changed successfully
87 * \retval -ve, on error
89 static int osd_scrub_refresh_mapping(struct osd_thread_info *info,
90 struct osd_device *dev,
91 const struct lu_fid *fid,
92 const struct osd_inode_id *id, int ops)
94 struct lu_fid *oi_fid = &info->oti_fid2;
95 struct osd_inode_id *oi_id = &info->oti_id2;
96 struct iam_container *bag;
97 struct iam_path_descr *ipd;
102 fid_cpu_to_be(oi_fid, fid);
103 osd_id_pack(oi_id, id);
104 jh = ldiskfs_journal_start_sb(osd_sb(dev),
105 osd_dto_credits_noquota[ops]);
108 CERROR("%.16s: fail to start trans for scrub store: rc = %d\n",
109 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, rc);
113 bag = &osd_fid2oi(dev, fid)->oi_dir.od_container;
114 ipd = osd_idx_ipd_get(info->oti_env, bag);
115 if (unlikely(ipd == NULL)) {
116 ldiskfs_journal_stop(jh);
117 CERROR("%.16s: fail to get ipd for scrub store\n",
118 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name);
123 case DTO_INDEX_UPDATE:
124 rc = iam_update(jh, bag, (const struct iam_key *)oi_fid,
125 (struct iam_rec *)oi_id, ipd);
126 if (unlikely(rc == -ENOENT)) {
127 /* Some unlink thread mat removed the OI mapping. */
131 case DTO_INDEX_INSERT:
132 rc = iam_insert(jh, bag, (const struct iam_key *)oi_fid,
133 (struct iam_rec *)oi_id, ipd);
134 if (unlikely(rc == -EEXIST)) {
136 /* XXX: There are trouble things when adding OI
137 * mapping for IGIF object, which may cause
138 * multiple objects to be mapped to the same
139 * IGIF formatted FID. Consider the following
142 * 1) The MDT is upgrading from 1.8 device.
143 * The OI scrub generates IGIF FID1 for the
144 * OBJ1 and adds the OI mapping.
146 * 2) For some reason, the OI scrub does not
147 * process all the IGIF objects completely.
149 * 3) The MDT is backuped and restored against
152 * 4) When the MDT mounts up, the OI scrub will
153 * try to rebuild the OI files. For some IGIF
154 * object, OBJ2, which was not processed by the
155 * OI scrub before the backup/restore, and the
156 * new generated IGIF formatted FID may be just
157 * the FID1, the same as OBJ1.
159 * Under such case, the OI scrub cannot know how
160 * to generate new FID for the OBJ2.
162 * Currently, we do nothing for that. One possible
163 * solution is to generate new normal FID for the
166 * Anyway, it is rare, only exists in theory. */
169 case DTO_INDEX_DELETE:
170 rc = iam_delete(jh, bag, (const struct iam_key *)oi_fid, ipd);
172 /* It is normal that the unlink thread has removed the
173 * OI mapping already. */
178 LASSERTF(0, "Unexpected ops %d\n", ops);
181 osd_ipd_put(info->oti_env, bag, ipd);
182 ldiskfs_journal_stop(jh);
186 /* OI_scrub file ops */
188 static void osd_scrub_file_to_cpu(struct scrub_file *des,
189 struct scrub_file *src)
191 memcpy(des->sf_uuid, src->sf_uuid, 16);
192 des->sf_flags = le64_to_cpu(src->sf_flags);
193 des->sf_magic = le32_to_cpu(src->sf_magic);
194 des->sf_status = le16_to_cpu(src->sf_status);
195 des->sf_param = le16_to_cpu(src->sf_param);
196 des->sf_time_last_complete =
197 le64_to_cpu(src->sf_time_last_complete);
198 des->sf_time_latest_start =
199 le64_to_cpu(src->sf_time_latest_start);
200 des->sf_time_last_checkpoint =
201 le64_to_cpu(src->sf_time_last_checkpoint);
202 des->sf_pos_latest_start =
203 le64_to_cpu(src->sf_pos_latest_start);
204 des->sf_pos_last_checkpoint =
205 le64_to_cpu(src->sf_pos_last_checkpoint);
206 des->sf_pos_first_inconsistent =
207 le64_to_cpu(src->sf_pos_first_inconsistent);
208 des->sf_items_checked =
209 le64_to_cpu(src->sf_items_checked);
210 des->sf_items_updated =
211 le64_to_cpu(src->sf_items_updated);
212 des->sf_items_failed =
213 le64_to_cpu(src->sf_items_failed);
214 des->sf_items_updated_prior =
215 le64_to_cpu(src->sf_items_updated_prior);
216 des->sf_run_time = le32_to_cpu(src->sf_run_time);
217 des->sf_success_count = le32_to_cpu(src->sf_success_count);
218 des->sf_oi_count = le16_to_cpu(src->sf_oi_count);
219 memcpy(des->sf_oi_bitmap, src->sf_oi_bitmap, SCRUB_OI_BITMAP_SIZE);
222 static void osd_scrub_file_to_le(struct scrub_file *des,
223 struct scrub_file *src)
225 memcpy(des->sf_uuid, src->sf_uuid, 16);
226 des->sf_flags = cpu_to_le64(src->sf_flags);
227 des->sf_magic = cpu_to_le32(src->sf_magic);
228 des->sf_status = cpu_to_le16(src->sf_status);
229 des->sf_param = cpu_to_le16(src->sf_param);
230 des->sf_time_last_complete =
231 cpu_to_le64(src->sf_time_last_complete);
232 des->sf_time_latest_start =
233 cpu_to_le64(src->sf_time_latest_start);
234 des->sf_time_last_checkpoint =
235 cpu_to_le64(src->sf_time_last_checkpoint);
236 des->sf_pos_latest_start =
237 cpu_to_le64(src->sf_pos_latest_start);
238 des->sf_pos_last_checkpoint =
239 cpu_to_le64(src->sf_pos_last_checkpoint);
240 des->sf_pos_first_inconsistent =
241 cpu_to_le64(src->sf_pos_first_inconsistent);
242 des->sf_items_checked =
243 cpu_to_le64(src->sf_items_checked);
244 des->sf_items_updated =
245 cpu_to_le64(src->sf_items_updated);
246 des->sf_items_failed =
247 cpu_to_le64(src->sf_items_failed);
248 des->sf_items_updated_prior =
249 cpu_to_le64(src->sf_items_updated_prior);
250 des->sf_run_time = cpu_to_le32(src->sf_run_time);
251 des->sf_success_count = cpu_to_le32(src->sf_success_count);
252 des->sf_oi_count = cpu_to_le16(src->sf_oi_count);
253 memcpy(des->sf_oi_bitmap, src->sf_oi_bitmap, SCRUB_OI_BITMAP_SIZE);
256 static void osd_scrub_file_init(struct osd_scrub *scrub, __u8 *uuid)
258 struct scrub_file *sf = &scrub->os_file;
260 memset(sf, 0, sizeof(*sf));
261 memcpy(sf->sf_uuid, uuid, 16);
262 sf->sf_magic = SCRUB_MAGIC_V1;
263 sf->sf_status = SS_INIT;
266 void osd_scrub_file_reset(struct osd_scrub *scrub, __u8 *uuid, __u64 flags)
268 struct scrub_file *sf = &scrub->os_file;
270 CDEBUG(D_LFSCK, "Reset OI scrub file, flags = "LPX64"\n", flags);
271 memcpy(sf->sf_uuid, uuid, 16);
272 sf->sf_status = SS_INIT;
273 sf->sf_flags |= flags;
276 sf->sf_time_latest_start = 0;
277 sf->sf_time_last_checkpoint = 0;
278 sf->sf_pos_latest_start = 0;
279 sf->sf_pos_last_checkpoint = 0;
280 sf->sf_pos_first_inconsistent = 0;
281 sf->sf_items_checked = 0;
282 sf->sf_items_updated = 0;
283 sf->sf_items_failed = 0;
284 sf->sf_items_updated_prior = 0;
285 sf->sf_items_noscrub = 0;
286 sf->sf_items_igif = 0;
289 static int osd_scrub_file_load(struct osd_scrub *scrub)
292 char *name = LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name;
293 int len = sizeof(scrub->os_file_disk);
296 rc = osd_ldiskfs_read(scrub->os_inode, &scrub->os_file_disk, len, &pos);
298 struct scrub_file *sf = &scrub->os_file;
300 osd_scrub_file_to_cpu(sf, &scrub->os_file_disk);
301 if (sf->sf_magic != SCRUB_MAGIC_V1) {
302 CWARN("%.16s: invalid scrub magic 0x%x != 0x%x\n,",
303 name, sf->sf_magic, SCRUB_MAGIC_V1);
304 /* Process it as new scrub file. */
309 } else if (rc != 0) {
310 CERROR("%.16s: fail to load scrub file, expected = %d, "
311 "rc = %d\n", name, len, rc);
315 /* return -ENOENT for empty scrub file case. */
322 int osd_scrub_file_store(struct osd_scrub *scrub)
324 struct osd_device *dev;
327 int len = sizeof(scrub->os_file_disk);
331 dev = container_of0(scrub, struct osd_device, od_scrub);
332 credits = osd_dto_credits_noquota[DTO_WRITE_BASE] +
333 osd_dto_credits_noquota[DTO_WRITE_BLOCK];
334 jh = ldiskfs_journal_start_sb(osd_sb(dev), credits);
337 CERROR("%.16s: fail to start trans for scrub store, rc = %d\n",
338 LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name,rc);
342 osd_scrub_file_to_le(&scrub->os_file_disk, &scrub->os_file);
343 rc = osd_ldiskfs_write_record(scrub->os_inode, &scrub->os_file_disk,
345 ldiskfs_journal_stop(jh);
347 CERROR("%.16s: fail to store scrub file, expected = %d, "
349 LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name,
351 scrub->os_time_last_checkpoint = cfs_time_current();
352 scrub->os_time_next_checkpoint = scrub->os_time_last_checkpoint +
353 cfs_time_seconds(SCRUB_CHECKPOINT_INTERVAL);
359 static int osd_scrub_prep(struct osd_device *dev)
361 struct osd_scrub *scrub = &dev->od_scrub;
362 struct ptlrpc_thread *thread = &scrub->os_thread;
363 struct scrub_file *sf = &scrub->os_file;
364 __u32 flags = scrub->os_start_flags;
368 down_write(&scrub->os_rwsem);
369 if (flags & SS_SET_FAILOUT)
370 sf->sf_param |= SP_FAILOUT;
372 if (flags & SS_CLEAR_FAILOUT)
373 sf->sf_param &= ~SP_FAILOUT;
375 if (flags & SS_RESET)
376 osd_scrub_file_reset(scrub,
377 LDISKFS_SB(osd_sb(dev))->s_es->s_uuid, 0);
379 if (flags & SS_AUTO) {
380 scrub->os_full_speed = 1;
381 sf->sf_flags |= SF_AUTO;
383 scrub->os_full_speed = 0;
386 if (sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT | SF_UPGRADE))
387 scrub->os_full_speed = 1;
389 scrub->os_in_prior = 0;
390 scrub->os_waiting = 0;
391 scrub->os_paused = 0;
392 scrub->os_new_checked = 0;
393 if (sf->sf_pos_last_checkpoint != 0)
394 sf->sf_pos_latest_start = sf->sf_pos_last_checkpoint + 1;
396 sf->sf_pos_latest_start = LDISKFS_FIRST_INO(osd_sb(dev)) + 1;
398 scrub->os_pos_current = sf->sf_pos_latest_start;
399 sf->sf_status = SS_SCANNING;
400 sf->sf_time_latest_start = cfs_time_current_sec();
401 sf->sf_time_last_checkpoint = sf->sf_time_latest_start;
402 rc = osd_scrub_file_store(scrub);
404 spin_lock(&scrub->os_lock);
405 thread_set_flags(thread, SVC_RUNNING);
406 spin_unlock(&scrub->os_lock);
407 cfs_waitq_broadcast(&thread->t_ctl_waitq);
409 up_write(&scrub->os_rwsem);
415 osd_scrub_check_update(struct osd_thread_info *info, struct osd_device *dev,
416 struct osd_idmap_cache *oic, int val)
418 struct osd_scrub *scrub = &dev->od_scrub;
419 struct scrub_file *sf = &scrub->os_file;
420 struct lu_fid *fid = &oic->oic_fid;
421 struct osd_inode_id *lid = &oic->oic_lid;
422 struct osd_inode_id *lid2 = &info->oti_id;
423 struct osd_inconsistent_item *oii = NULL;
424 struct inode *inode = NULL;
425 int ops = DTO_INDEX_UPDATE;
430 down_write(&scrub->os_rwsem);
431 scrub->os_new_checked++;
435 if (scrub->os_in_prior)
436 oii = cfs_list_entry(oic, struct osd_inconsistent_item,
439 if (lid->oii_ino < sf->sf_pos_latest_start && oii == NULL)
442 if (fid_is_igif(fid))
445 if ((val == SCRUB_NEXT_NOLMA) &&
446 (!dev->od_handle_nolma || OBD_FAIL_CHECK(OBD_FAIL_FID_NOLMA)))
449 if ((oii != NULL && oii->oii_insert) || (val == SCRUB_NEXT_NOLMA))
452 /* XXX: Currently, no FID-in-LMA for OST object, so osd_oi_lookup()
453 * without checking FLD is enough.
455 * It should be updated if FID-in-LMA for OSD object introduced
457 rc = osd_oi_lookup(info, dev, fid, lid2, false);
463 inode = osd_iget(info, dev, lid);
466 /* Someone removed the inode. */
467 if (rc == -ENOENT || rc == -ESTALE)
472 /* Check whether the inode to be unlinked during OI scrub. */
473 if (unlikely(inode->i_nlink == 0)) {
478 ops = DTO_INDEX_INSERT;
479 idx = osd_oi_fid2idx(dev, fid);
480 if (val == SCRUB_NEXT_NOLMA) {
481 sf->sf_flags |= SF_UPGRADE;
482 scrub->os_full_speed = 1;
483 rc = osd_ea_fid_set(info, inode, fid, 0);
487 sf->sf_flags |= SF_RECREATED | SF_INCONSISTENT;
488 scrub->os_full_speed = 1;
489 if (unlikely(!ldiskfs_test_bit(idx, sf->sf_oi_bitmap)))
490 ldiskfs_set_bit(idx, sf->sf_oi_bitmap);
492 } else if (osd_id_eq(lid, lid2)) {
495 sf->sf_flags |= SF_INCONSISTENT;
496 scrub->os_full_speed = 1;
499 rc = osd_scrub_refresh_mapping(info, dev, fid, lid, ops);
501 if (scrub->os_in_prior)
502 sf->sf_items_updated_prior++;
504 sf->sf_items_updated++;
511 sf->sf_items_failed++;
512 if (sf->sf_pos_first_inconsistent == 0 ||
513 sf->sf_pos_first_inconsistent > lid->oii_ino)
514 sf->sf_pos_first_inconsistent = lid->oii_ino;
519 if (ops == DTO_INDEX_INSERT) {
520 /* There may be conflict unlink during the OI scrub,
521 * if happend, then remove the new added OI mapping. */
522 if (unlikely(inode->i_nlink == 0))
523 osd_scrub_refresh_mapping(info, dev, fid, lid,
527 up_write(&scrub->os_rwsem);
530 LASSERT(!cfs_list_empty(&oii->oii_list));
532 spin_lock(&scrub->os_lock);
533 cfs_list_del_init(&oii->oii_list);
534 spin_unlock(&scrub->os_lock);
537 RETURN(sf->sf_param & SP_FAILOUT ? rc : 0);
540 static int osd_scrub_checkpoint(struct osd_scrub *scrub)
542 struct scrub_file *sf = &scrub->os_file;
545 if (likely(cfs_time_before(cfs_time_current(),
546 scrub->os_time_next_checkpoint) ||
547 scrub->os_new_checked == 0))
550 down_write(&scrub->os_rwsem);
551 sf->sf_items_checked += scrub->os_new_checked;
552 scrub->os_new_checked = 0;
553 sf->sf_pos_last_checkpoint = scrub->os_pos_current;
554 sf->sf_time_last_checkpoint = cfs_time_current_sec();
555 sf->sf_run_time += cfs_duration_sec(cfs_time_current() + HALF_SEC -
556 scrub->os_time_last_checkpoint);
557 rc = osd_scrub_file_store(scrub);
558 up_write(&scrub->os_rwsem);
563 static void osd_scrub_post(struct osd_scrub *scrub, int result)
565 struct scrub_file *sf = &scrub->os_file;
568 down_write(&scrub->os_rwsem);
569 spin_lock(&scrub->os_lock);
570 thread_set_flags(&scrub->os_thread, SVC_STOPPING);
571 spin_unlock(&scrub->os_lock);
572 if (scrub->os_new_checked > 0) {
573 sf->sf_items_checked += scrub->os_new_checked;
574 scrub->os_new_checked = 0;
575 sf->sf_pos_last_checkpoint = scrub->os_pos_current;
577 sf->sf_time_last_checkpoint = cfs_time_current_sec();
579 sf->sf_status = SS_COMPLETED;
580 memset(sf->sf_oi_bitmap, 0, SCRUB_OI_BITMAP_SIZE);
581 sf->sf_flags &= ~(SF_RECREATED | SF_INCONSISTENT |
582 SF_UPGRADE | SF_AUTO);
583 sf->sf_time_last_complete = sf->sf_time_last_checkpoint;
584 sf->sf_success_count++;
585 } else if (result == 0) {
586 if (scrub->os_paused)
587 sf->sf_status = SS_PAUSED;
589 sf->sf_status = SS_STOPPED;
591 sf->sf_status = SS_FAILED;
593 sf->sf_run_time += cfs_duration_sec(cfs_time_current() + HALF_SEC -
594 scrub->os_time_last_checkpoint);
595 result = osd_scrub_file_store(scrub);
597 CERROR("%.16s: fail to osd_scrub_post, rc = %d\n",
598 LDISKFS_SB(osd_scrub2sb(scrub))->s_es->s_volume_name,
600 up_write(&scrub->os_rwsem);
605 /* iteration engine */
607 struct osd_iit_param {
608 struct super_block *sb;
609 struct buffer_head *bitmap;
615 typedef int (*osd_iit_next_policy)(struct osd_thread_info *info,
616 struct osd_device *dev,
617 struct osd_iit_param *param,
618 struct osd_idmap_cache **oic,
621 typedef int (*osd_iit_exec_policy)(struct osd_thread_info *info,
622 struct osd_device *dev,
623 struct osd_iit_param *param,
624 struct osd_idmap_cache *oic,
625 int *noslot, int rc);
627 static int osd_iit_next(struct osd_iit_param *param, __u32 *pos)
629 param->offset = ldiskfs_find_next_bit(param->bitmap->b_data,
630 LDISKFS_INODES_PER_GROUP(param->sb), param->offset);
631 if (param->offset >= LDISKFS_INODES_PER_GROUP(param->sb)) {
632 *pos = 1 + (param->bg+1) * LDISKFS_INODES_PER_GROUP(param->sb);
633 return SCRUB_NEXT_BREAK;
635 *pos = param->gbase + param->offset;
640 static int osd_iit_iget(struct osd_thread_info *info, struct osd_device *dev,
641 struct lu_fid *fid, struct osd_inode_id *lid, __u32 pos,
642 struct super_block *sb, bool scrub)
644 struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
648 osd_id_gen(lid, pos, OSD_OII_NOGEN);
649 inode = osd_iget(info, dev, lid);
652 /* The inode may be removed after bitmap searching, or the
653 * file is new created without inode initialized yet. */
654 if (rc == -ENOENT || rc == -ESTALE)
655 return SCRUB_NEXT_CONTINUE;
657 CERROR("%.16s: fail to read inode, ino# = %u, rc = %d\n",
658 LDISKFS_SB(sb)->s_es->s_volume_name, pos, rc);
662 /* If the inode has no OI mapping, then it is special locally used,
663 * should be invisible to OI scrub or up layer LFSCK. */
664 if (ldiskfs_test_inode_state(inode, LDISKFS_STATE_LUSTRE_NO_OI)) {
666 return SCRUB_NEXT_CONTINUE;
670 ldiskfs_test_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB)) {
671 /* Only skip it for the first OI scrub accessing. */
672 ldiskfs_clear_inode_state(inode, LDISKFS_STATE_LUSTRE_NOSCRUB);
674 return SCRUB_NEXT_NOSCRUB;
677 rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
679 if (fid_is_llog(&lma->lma_self_fid) ||
680 (!scrub && fid_is_internal(&lma->lma_self_fid)))
681 rc = SCRUB_NEXT_CONTINUE;
683 *fid = lma->lma_self_fid;
684 } else if (rc == -ENODATA) {
685 lu_igif_build(fid, inode->i_ino, inode->i_generation);
687 rc = SCRUB_NEXT_NOLMA;
695 static int osd_scrub_next(struct osd_thread_info *info, struct osd_device *dev,
696 struct osd_iit_param *param,
697 struct osd_idmap_cache **oic, int noslot)
699 struct osd_scrub *scrub = &dev->od_scrub;
700 struct ptlrpc_thread *thread = &scrub->os_thread;
702 struct osd_inode_id *lid;
705 if (OBD_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_DELAY) && cfs_fail_val > 0) {
706 struct l_wait_info lwi;
708 lwi = LWI_TIMEOUT(cfs_time_seconds(cfs_fail_val), NULL, NULL);
709 l_wait_event(thread->t_ctl_waitq,
710 !cfs_list_empty(&scrub->os_inconsistent_items) ||
711 !thread_is_running(thread),
715 if (OBD_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_CRASH)) {
716 spin_lock(&scrub->os_lock);
717 thread_set_flags(thread, SVC_STOPPING);
718 spin_unlock(&scrub->os_lock);
719 return SCRUB_NEXT_CRASH;
722 if (OBD_FAIL_CHECK(OBD_FAIL_OSD_SCRUB_FATAL))
723 return SCRUB_NEXT_FATAL;
725 if (unlikely(!thread_is_running(thread)))
726 return SCRUB_NEXT_EXIT;
728 if (!cfs_list_empty(&scrub->os_inconsistent_items)) {
729 struct osd_inconsistent_item *oii;
731 oii = cfs_list_entry(scrub->os_inconsistent_items.next,
732 struct osd_inconsistent_item, oii_list);
733 *oic = &oii->oii_cache;
734 scrub->os_in_prior = 1;
739 return SCRUB_NEXT_WAIT;
741 rc = osd_iit_next(param, &scrub->os_pos_current);
745 *oic = &scrub->os_oic;
746 fid = &(*oic)->oic_fid;
747 lid = &(*oic)->oic_lid;
748 rc = osd_iit_iget(info, dev, fid, lid,
749 scrub->os_pos_current, param->sb, true);
753 static int osd_preload_next(struct osd_thread_info *info,
754 struct osd_device *dev, struct osd_iit_param *param,
755 struct osd_idmap_cache **oic, int noslot)
757 struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
758 struct osd_scrub *scrub;
759 struct ptlrpc_thread *thread;
762 rc = osd_iit_next(param, &ooc->ooc_pos_preload);
766 scrub = &dev->od_scrub;
767 thread = &scrub->os_thread;
768 if (thread_is_running(thread) &&
769 ooc->ooc_pos_preload >= scrub->os_pos_current)
770 return SCRUB_NEXT_EXIT;
772 rc = osd_iit_iget(info, dev,
773 &ooc->ooc_cache[ooc->ooc_producer_idx].oic_fid,
774 &ooc->ooc_cache[ooc->ooc_producer_idx].oic_lid,
775 ooc->ooc_pos_preload, param->sb, false);
776 /* If succeed, it needs to move forward; otherwise up layer LFSCK may
777 * ignore the failure, so it still need to skip the inode next time. */
778 ooc->ooc_pos_preload = param->gbase + ++(param->offset);
783 osd_scrub_wakeup(struct osd_scrub *scrub, struct osd_otable_it *it)
785 spin_lock(&scrub->os_lock);
786 if (osd_scrub_has_window(scrub, &it->ooi_cache) ||
787 !cfs_list_empty(&scrub->os_inconsistent_items) ||
788 it->ooi_waiting || !thread_is_running(&scrub->os_thread))
789 scrub->os_waiting = 0;
791 scrub->os_waiting = 1;
792 spin_unlock(&scrub->os_lock);
794 return !scrub->os_waiting;
797 static int osd_scrub_exec(struct osd_thread_info *info, struct osd_device *dev,
798 struct osd_iit_param *param,
799 struct osd_idmap_cache *oic, int *noslot, int rc)
801 struct l_wait_info lwi = { 0 };
802 struct osd_scrub *scrub = &dev->od_scrub;
803 struct scrub_file *sf = &scrub->os_file;
804 struct ptlrpc_thread *thread = &scrub->os_thread;
805 struct osd_otable_it *it = dev->od_otable_it;
806 struct osd_otable_cache *ooc = it ? &it->ooi_cache : NULL;
809 case SCRUB_NEXT_CONTINUE:
811 case SCRUB_NEXT_WAIT:
813 case SCRUB_NEXT_NOSCRUB:
814 down_write(&scrub->os_rwsem);
815 scrub->os_new_checked++;
816 sf->sf_items_noscrub++;
817 up_write(&scrub->os_rwsem);
821 rc = osd_scrub_check_update(info, dev, oic, rc);
825 rc = osd_scrub_checkpoint(scrub);
827 CERROR("%.16s: fail to checkpoint, pos = %u, rc = %d\n",
828 LDISKFS_SB(param->sb)->s_es->s_volume_name,
829 scrub->os_pos_current, rc);
830 /* Continue, as long as the scrub itself can go ahead. */
833 if (scrub->os_in_prior) {
834 scrub->os_in_prior = 0;
839 scrub->os_pos_current = param->gbase + ++(param->offset);
842 if (it != NULL && it->ooi_waiting &&
843 ooc->ooc_pos_preload < scrub->os_pos_current) {
844 spin_lock(&scrub->os_lock);
846 cfs_waitq_broadcast(&thread->t_ctl_waitq);
847 spin_unlock(&scrub->os_lock);
850 if (scrub->os_full_speed || rc == SCRUB_NEXT_CONTINUE)
853 if (osd_scrub_has_window(scrub, ooc)) {
858 l_wait_event(thread->t_ctl_waitq,
859 osd_scrub_wakeup(scrub, it),
862 if (osd_scrub_has_window(scrub, ooc))
869 static int osd_preload_exec(struct osd_thread_info *info,
870 struct osd_device *dev, struct osd_iit_param *param,
871 struct osd_idmap_cache *oic, int *noslot, int rc)
873 struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
876 ooc->ooc_cached_items++;
877 ooc->ooc_producer_idx = (ooc->ooc_producer_idx + 1) &
878 ~OSD_OTABLE_IT_CACHE_MASK;
880 return rc > 0 ? 0 : rc;
883 #define SCRUB_IT_ALL 1
884 #define SCRUB_IT_CRASH 2
886 static int osd_inode_iteration(struct osd_thread_info *info,
887 struct osd_device *dev, __u32 max, bool preload)
889 osd_iit_next_policy next;
890 osd_iit_exec_policy exec;
893 struct osd_iit_param param;
900 struct osd_scrub *scrub = &dev->od_scrub;
902 next = osd_scrub_next;
903 exec = osd_scrub_exec;
904 pos = &scrub->os_pos_current;
905 count = &scrub->os_new_checked;
907 struct osd_otable_cache *ooc = &dev->od_otable_it->ooi_cache;
909 next = osd_preload_next;
910 exec = osd_preload_exec;
911 pos = &ooc->ooc_pos_preload;
912 count = &ooc->ooc_cached_items;
914 param.sb = osd_sb(dev);
915 limit = le32_to_cpu(LDISKFS_SB(param.sb)->s_es->s_inodes_count);
917 while (*pos <= limit && *count < max) {
918 struct osd_idmap_cache *oic = NULL;
920 param.bg = (*pos - 1) / LDISKFS_INODES_PER_GROUP(param.sb);
921 param.offset = (*pos - 1) % LDISKFS_INODES_PER_GROUP(param.sb);
922 param.gbase = 1 + param.bg * LDISKFS_INODES_PER_GROUP(param.sb);
923 param.bitmap = ldiskfs_read_inode_bitmap(param.sb, param.bg);
924 if (param.bitmap == NULL) {
925 CERROR("%.16s: fail to read bitmap for %u, "
926 "scrub will stop, urgent mode\n",
927 LDISKFS_SB(param.sb)->s_es->s_volume_name,
932 while (param.offset < LDISKFS_INODES_PER_GROUP(param.sb) &&
934 rc = next(info, dev, ¶m, &oic, noslot);
936 case SCRUB_NEXT_BREAK:
938 case SCRUB_NEXT_EXIT:
939 brelse(param.bitmap);
941 case SCRUB_NEXT_CRASH:
942 brelse(param.bitmap);
943 RETURN(SCRUB_IT_CRASH);
944 case SCRUB_NEXT_FATAL:
945 brelse(param.bitmap);
949 rc = exec(info, dev, ¶m, oic, &noslot, rc);
951 brelse(param.bitmap);
955 if (preload && dev->od_otable_it->ooi_stopping) {
956 brelse(param.bitmap);
962 brelse(param.bitmap);
964 if (preload && dev->od_otable_it->ooi_stopping)
969 RETURN(SCRUB_IT_ALL);
973 static int osd_otable_it_preload(const struct lu_env *env,
974 struct osd_otable_it *it)
976 struct osd_device *dev = it->ooi_dev;
977 struct osd_scrub *scrub = &dev->od_scrub;
978 struct osd_otable_cache *ooc = &it->ooi_cache;
982 rc = osd_inode_iteration(osd_oti_get(env), dev,
983 OSD_OTABLE_IT_CACHE_SIZE, true);
984 if (rc == SCRUB_IT_ALL)
985 it->ooi_all_cached = 1;
987 CDEBUG(D_LFSCK, "OSD pre-loaded: max = %u, preload = %u, rc = %d\n",
988 le32_to_cpu(LDISKFS_SB(osd_sb(dev))->s_es->s_inodes_count),
989 ooc->ooc_pos_preload, rc);
991 if (scrub->os_waiting && osd_scrub_has_window(scrub, ooc)) {
992 scrub->os_waiting = 0;
993 cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
996 RETURN(rc < 0 ? rc : ooc->ooc_cached_items);
999 static int osd_scrub_main(void *args)
1002 struct osd_device *dev = (struct osd_device *)args;
1003 struct osd_scrub *scrub = &dev->od_scrub;
1004 struct ptlrpc_thread *thread = &scrub->os_thread;
1005 struct super_block *sb = osd_sb(dev);
1009 cfs_daemonize("OI_scrub");
1010 rc = lu_env_init(&env, LCT_DT_THREAD);
1012 CERROR("%.16s: OI scrub, fail to init env, rc = %d\n",
1013 LDISKFS_SB(sb)->s_es->s_volume_name, rc);
1017 rc = osd_scrub_prep(dev);
1019 CERROR("%.16s: OI scrub, fail to scrub prep, rc = %d\n",
1020 LDISKFS_SB(sb)->s_es->s_volume_name, rc);
1024 if (!scrub->os_full_speed) {
1025 struct l_wait_info lwi = { 0 };
1026 struct osd_otable_it *it = dev->od_otable_it;
1027 struct osd_otable_cache *ooc = &it->ooi_cache;
1029 l_wait_event(thread->t_ctl_waitq,
1030 it->ooi_user_ready || !thread_is_running(thread),
1032 if (unlikely(!thread_is_running(thread)))
1035 scrub->os_pos_current = ooc->ooc_pos_preload;
1038 CDEBUG(D_LFSCK, "OI scrub: flags = 0x%x, pos = %u\n",
1039 scrub->os_start_flags, scrub->os_pos_current);
1041 rc = osd_inode_iteration(osd_oti_get(&env), dev, ~0U, false);
1042 if (unlikely(rc == SCRUB_IT_CRASH))
1043 GOTO(out, rc = -EINVAL);
1047 osd_scrub_post(scrub, rc);
1048 CDEBUG(D_LFSCK, "OI scrub: stop, rc = %d, pos = %u\n",
1049 rc, scrub->os_pos_current);
1052 while (!cfs_list_empty(&scrub->os_inconsistent_items)) {
1053 struct osd_inconsistent_item *oii;
1055 oii = cfs_list_entry(scrub->os_inconsistent_items.next,
1056 struct osd_inconsistent_item, oii_list);
1057 cfs_list_del_init(&oii->oii_list);
1063 spin_lock(&scrub->os_lock);
1064 thread_set_flags(thread, SVC_STOPPED);
1065 cfs_waitq_broadcast(&thread->t_ctl_waitq);
1066 spin_unlock(&scrub->os_lock);
1070 /* initial OI scrub */
1072 typedef int (*scandir_t)(struct osd_thread_info *, struct osd_device *,
1073 struct dentry *, filldir_t filldir);
1075 static int osd_ios_varfid_fill(void *buf, const char *name, int namelen,
1076 loff_t offset, __u64 ino, unsigned d_type);
1079 osd_ios_general_scan(struct osd_thread_info *info, struct osd_device *dev,
1080 struct dentry *dentry, filldir_t filldir);
1082 osd_ios_ROOT_scan(struct osd_thread_info *info, struct osd_device *dev,
1083 struct dentry *dentry, filldir_t filldir);
1086 osd_ios_OBJECTS_scan(struct osd_thread_info *info, struct osd_device *dev,
1087 struct dentry *dentry, filldir_t filldir);
1090 OLF_SCAN_SUBITEMS = 0x0001,
1091 OLF_HIDE_FID = 0x0002,
1092 OLF_SHOW_NAME = 0x0004,
1097 struct lu_fid olm_fid;
1099 scandir_t olm_scandir;
1100 filldir_t olm_filldir;
1103 /* Add the new introduced local files in the list in the future. */
1104 static const struct osd_lf_map osd_lf_maps[] = {
1106 { CATLIST, { FID_SEQ_LOCAL_FILE, LLOG_CATALOGS_OID, 0 }, OLF_SHOW_NAME,
1110 { MOUNT_CONFIGS_DIR, { FID_SEQ_LOCAL_FILE, MGS_CONFIGS_OID, 0 },
1111 OLF_SCAN_SUBITEMS, osd_ios_general_scan,
1112 osd_ios_varfid_fill },
1114 /* NIDTBL_VERSIONS */
1115 { MGS_NIDTBL_DIR, { 0, 0, 0 }, OLF_SCAN_SUBITEMS,
1116 osd_ios_general_scan, osd_ios_varfid_fill },
1119 { "PENDING", { FID_SEQ_LOCAL_FILE, MDD_ORPHAN_OID, 0 }, 0, NULL, NULL },
1122 { "ROOT", { FID_SEQ_ROOT, 1, 0 },
1123 OLF_SCAN_SUBITEMS | OLF_HIDE_FID, osd_ios_ROOT_scan, NULL },
1125 /* changelog_catalog */
1126 { CHANGELOG_CATALOG, { 0, 0, 0 }, 0, NULL, NULL },
1128 /* changelog_users */
1129 { CHANGELOG_USERS, { 0, 0, 0 }, 0, NULL, NULL },
1132 { "fld", { FID_SEQ_LOCAL_FILE, FLD_INDEX_OID, 0 }, OLF_SHOW_NAME,
1136 { LAST_RCVD, { FID_SEQ_LOCAL_FILE, LAST_RECV_OID, 0 }, OLF_SHOW_NAME,
1139 /* lfsck_bookmark */
1140 { "lfsck_bookmark", { FID_SEQ_LOCAL_FILE, LFSCK_BOOKMARK_OID, 0 }, 0,
1144 { LOV_OBJID, { FID_SEQ_LOCAL_FILE, MDD_LOV_OBJ_OID, 0 }, OLF_SHOW_NAME,
1148 { LOV_OBJSEQ, { FID_SEQ_LOCAL_FILE, MDD_LOV_OBJ_OSEQ, 0 },
1149 OLF_SHOW_NAME, NULL, NULL },
1152 { QMT_DIR, { 0, 0, 0 }, OLF_SCAN_SUBITEMS,
1153 osd_ios_general_scan, osd_ios_varfid_fill },
1156 { QSD_DIR, { 0, 0, 0 }, OLF_SCAN_SUBITEMS,
1157 osd_ios_general_scan, osd_ios_varfid_fill },
1159 /* seq-200000003-lastid */
1160 { "seq-200000003-lastid", { FID_SEQ_LOCAL_NAME, 1, 0 }, 0,
1164 { "seq_ctl", { FID_SEQ_LOCAL_FILE, FID_SEQ_CTL_OID, 0 },
1165 OLF_SHOW_NAME, NULL, NULL },
1168 { "seq_srv", { FID_SEQ_LOCAL_FILE, FID_SEQ_SRV_OID, 0 },
1169 OLF_SHOW_NAME, NULL, NULL },
1172 { "LAST_GROUP", { FID_SEQ_LOCAL_FILE, OFD_LAST_GROUP_OID, 0 },
1173 OLF_SHOW_NAME, NULL, NULL },
1176 { HEALTH_CHECK, { FID_SEQ_LOCAL_FILE, OFD_HEALTH_CHECK_OID, 0 },
1177 OLF_SHOW_NAME, NULL, NULL },
1179 /* lfsck_namespace */
1180 { "lfsck_namespace", { FID_SEQ_LOCAL_FILE, LFSCK_BOOKMARK_OID, 0 }, 0,
1183 /* OBJECTS, upgrade from old device */
1184 { OBJECTS, { 0, 0, 0 }, OLF_SCAN_SUBITEMS, osd_ios_OBJECTS_scan, NULL },
1186 /* lquota_v2.user, upgrade from old device */
1187 { "lquota_v2.user", { 0, 0, 0 }, 0, NULL, NULL },
1189 /* lquota_v2.group, upgrade from old device */
1190 { "lquota_v2.group", { 0, 0, 0 }, 0, NULL, NULL },
1192 { NULL, { 0, 0, 0 }, 0, NULL, NULL }
1195 struct osd_ios_item {
1196 cfs_list_t oii_list;
1197 struct dentry *oii_dentry;
1198 scandir_t oii_scandir;
1199 filldir_t oii_filldir;
1202 struct osd_ios_filldir_buf {
1203 struct osd_thread_info *oifb_info;
1204 struct osd_device *oifb_dev;
1205 struct dentry *oifb_dentry;
1208 static inline struct dentry *
1209 osd_ios_lookup_one_len(const char *name, struct dentry *parent, int namelen)
1211 struct dentry *dentry;
1213 dentry = ll_lookup_one_len(name, parent, namelen);
1214 if (!IS_ERR(dentry) && dentry->d_inode == NULL) {
1216 return ERR_PTR(-ENOENT);
1223 osd_ios_llogname2fid(struct lu_fid *fid, const char *name, int namelen)
1228 fid->f_seq = FID_SEQ_LLOG;
1230 id = id * 10 + name[i++] - '0';
1232 fid->f_oid = id & 0x00000000ffffffffULL;
1233 fid->f_ver = id >> 32;
1237 osd_ios_Oname2fid(struct lu_fid *fid, const char *name, int namelen)
1243 seq = seq * 10 + name[i++] - '0';
1245 lu_last_id_fid(fid, seq);
1249 osd_ios_new_item(struct osd_device *dev, struct dentry *dentry,
1250 scandir_t scandir, filldir_t filldir)
1252 struct osd_ios_item *item;
1254 OBD_ALLOC_PTR(item);
1258 CFS_INIT_LIST_HEAD(&item->oii_list);
1259 item->oii_dentry = dget(dentry);
1260 item->oii_scandir = scandir;
1261 item->oii_filldir = filldir;
1262 cfs_list_add_tail(&item->oii_list, &dev->od_ios_list);
1267 * osd_ios_scan_one() - check/fix LMA FID and OI entry for one inode
1269 * The passed \a inode's \a fid is verified against the LMA FID. If the \a fid
1270 * is NULL or is empty the IGIF FID is used. The FID is verified in the OI to
1271 * reference the inode, or fixed if it is missing or references another inode.
1274 osd_ios_scan_one(struct osd_thread_info *info, struct osd_device *dev,
1275 struct inode *inode, const struct lu_fid *fid, int flags)
1277 struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
1278 struct osd_inode_id *id = &info->oti_id;
1279 struct osd_inode_id *id2 = &info->oti_id2;
1280 struct osd_scrub *scrub = &dev->od_scrub;
1281 struct scrub_file *sf = &scrub->os_file;
1286 rc = osd_get_lma(info, inode, &info->oti_obj_dentry, lma);
1287 if (rc != 0 && rc != -ENODATA)
1290 osd_id_gen(id, inode->i_ino, inode->i_generation);
1291 if (rc == -ENODATA) {
1292 if (fid == NULL || fid_is_zero(fid) || flags & OLF_HIDE_FID)
1293 lu_igif_build(&tfid, inode->i_ino, inode->i_generation);
1296 rc = osd_ea_fid_set(info, inode, &tfid, 0);
1300 tfid = lma->lma_self_fid;
1303 rc = __osd_oi_lookup(info, dev, &tfid, id2);
1308 rc = osd_scrub_refresh_mapping(info, dev, &tfid, id,
1313 if (osd_id_eq_strict(id, id2))
1316 if (!(sf->sf_flags & SF_INCONSISTENT)) {
1317 osd_scrub_file_reset(scrub,
1318 LDISKFS_SB(osd_sb(dev))->s_es->s_uuid,
1320 rc = osd_scrub_file_store(scrub);
1325 rc = osd_scrub_refresh_mapping(info, dev, &tfid, id, DTO_INDEX_UPDATE);
1330 static int osd_ios_varfid_fill(void *buf, const char *name, int namelen,
1331 loff_t offset, __u64 ino, unsigned d_type)
1333 struct osd_ios_filldir_buf *fill_buf = buf;
1334 struct osd_device *dev = fill_buf->oifb_dev;
1335 struct dentry *child;
1339 /* skip any '.' started names */
1343 child = osd_ios_lookup_one_len(name, fill_buf->oifb_dentry, namelen);
1345 RETURN(PTR_ERR(child));
1347 rc = osd_ios_scan_one(fill_buf->oifb_info, dev, child->d_inode,
1349 if (rc == 0 && S_ISDIR(child->d_inode->i_mode))
1350 rc = osd_ios_new_item(dev, child, osd_ios_general_scan,
1351 osd_ios_varfid_fill);
1357 static int osd_ios_root_fill(void *buf, const char *name, int namelen,
1358 loff_t offset, __u64 ino, unsigned d_type)
1360 struct osd_ios_filldir_buf *fill_buf = buf;
1361 struct osd_device *dev = fill_buf->oifb_dev;
1362 const struct osd_lf_map *map;
1363 struct dentry *child;
1367 /* skip any '.' started names */
1371 for (map = osd_lf_maps; map->olm_name != NULL; map++) {
1372 if (strlen(map->olm_name) != namelen)
1375 if (strncmp(map->olm_name, name, namelen) == 0)
1379 if (map->olm_name == NULL)
1382 child = osd_ios_lookup_one_len(name, fill_buf->oifb_dentry, namelen);
1384 RETURN(PTR_ERR(child));
1386 rc = osd_ios_scan_one(fill_buf->oifb_info, dev, child->d_inode,
1387 &map->olm_fid, map->olm_flags);
1388 if (rc == 0 && map->olm_flags & OLF_SCAN_SUBITEMS)
1389 rc = osd_ios_new_item(dev, child, map->olm_scandir,
1397 osd_ios_general_scan(struct osd_thread_info *info, struct osd_device *dev,
1398 struct dentry *dentry, filldir_t filldir)
1400 struct osd_ios_filldir_buf buf = { info, dev, dentry };
1401 struct file *filp = &info->oti_it_ea.oie_file;
1402 struct inode *inode = dentry->d_inode;
1403 const struct file_operations *fops = inode->i_fop;
1407 LASSERT(filldir != NULL);
1410 filp->f_dentry = dentry;
1411 filp->f_mode = FMODE_64BITHASH;
1412 filp->f_mapping = inode->i_mapping;
1414 filp->private_data = NULL;
1416 rc = fops->readdir(filp, &buf, filldir);
1417 fops->release(inode, filp);
1423 osd_ios_ROOT_scan(struct osd_thread_info *info, struct osd_device *dev,
1424 struct dentry *dentry, filldir_t filldir)
1426 struct osd_scrub *scrub = &dev->od_scrub;
1427 struct scrub_file *sf = &scrub->os_file;
1428 struct dentry *child;
1432 /* It is existing MDT device. */
1433 dev->od_handle_nolma = 1;
1434 child = osd_ios_lookup_one_len(dot_lustre_name, dentry,
1435 strlen(dot_lustre_name));
1436 if (IS_ERR(child)) {
1437 rc = PTR_ERR(child);
1438 if (rc == -ENOENT) {
1439 /* It is 1.8 MDT device. */
1440 if (!(sf->sf_flags & SF_UPGRADE)) {
1441 osd_scrub_file_reset(scrub,
1442 LDISKFS_SB(osd_sb(dev))->s_es->s_uuid,
1444 rc = osd_scrub_file_store(scrub);
1450 rc = osd_ios_scan_one(info, dev, child->d_inode, NULL, 0);
1458 osd_ios_OBJECTS_scan(struct osd_thread_info *info, struct osd_device *dev,
1459 struct dentry *dentry, filldir_t filldir)
1461 struct dentry *child;
1465 child = osd_ios_lookup_one_len(ADMIN_USR, dentry, strlen(ADMIN_USR));
1466 if (!IS_ERR(child)) {
1467 rc = osd_ios_scan_one(info, dev, child->d_inode, NULL, 0);
1470 rc = PTR_ERR(child);
1473 if (rc != 0 && rc != -ENOENT)
1476 child = osd_ios_lookup_one_len(ADMIN_GRP, dentry, strlen(ADMIN_GRP));
1477 if (!IS_ERR(child)) {
1478 rc = osd_ios_scan_one(info, dev, child->d_inode, NULL, 0);
1481 rc = PTR_ERR(child);
1490 static int osd_initial_OI_scrub(struct osd_thread_info *info,
1491 struct osd_device *dev)
1493 struct osd_ios_item *item = NULL;
1494 scandir_t scandir = osd_ios_general_scan;
1495 filldir_t filldir = osd_ios_root_fill;
1496 struct dentry *dentry = osd_sb(dev)->s_root;
1501 rc = scandir(info, dev, dentry, filldir);
1503 dput(item->oii_dentry);
1510 if (cfs_list_empty(&dev->od_ios_list))
1513 item = cfs_list_entry(dev->od_ios_list.next,
1514 struct osd_ios_item, oii_list);
1515 cfs_list_del_init(&item->oii_list);
1517 LASSERT(item->oii_scandir != NULL);
1518 scandir = item->oii_scandir;
1519 filldir = item->oii_filldir;
1520 dentry = item->oii_dentry;
1523 while (!cfs_list_empty(&dev->od_ios_list)) {
1524 item = cfs_list_entry(dev->od_ios_list.next,
1525 struct osd_ios_item, oii_list);
1526 cfs_list_del_init(&item->oii_list);
1527 dput(item->oii_dentry);
1534 char *osd_lf_fid2name(const struct lu_fid *fid)
1536 const struct osd_lf_map *map = osd_lf_maps;
1538 while (map->olm_name != NULL) {
1539 if (!lu_fid_eq(fid, &map->olm_fid)) {
1544 if (map->olm_flags & OLF_SHOW_NAME)
1545 return map->olm_name;
1553 /* OI scrub start/stop */
1555 static int do_osd_scrub_start(struct osd_device *dev, __u32 flags)
1557 struct osd_scrub *scrub = &dev->od_scrub;
1558 struct ptlrpc_thread *thread = &scrub->os_thread;
1559 struct l_wait_info lwi = { 0 };
1564 /* os_lock: sync status between stop and scrub thread */
1565 spin_lock(&scrub->os_lock);
1566 if (thread_is_running(thread)) {
1567 spin_unlock(&scrub->os_lock);
1569 } else if (unlikely(thread_is_stopping(thread))) {
1570 spin_unlock(&scrub->os_lock);
1571 l_wait_event(thread->t_ctl_waitq,
1572 thread_is_stopped(thread),
1576 spin_unlock(&scrub->os_lock);
1578 if (scrub->os_file.sf_status == SS_COMPLETED)
1581 scrub->os_start_flags = flags;
1582 thread_set_flags(thread, 0);
1583 rc = cfs_create_thread(osd_scrub_main, dev, 0);
1585 CERROR("%.16s: cannot start iteration thread, rc = %d\n",
1586 LDISKFS_SB(osd_sb(dev))->s_es->s_volume_name, rc);
1590 l_wait_event(thread->t_ctl_waitq,
1591 thread_is_running(thread) || thread_is_stopped(thread),
1597 int osd_scrub_start(struct osd_device *dev)
1602 /* od_otable_mutex: prevent curcurrent start/stop */
1603 mutex_lock(&dev->od_otable_mutex);
1604 rc = do_osd_scrub_start(dev, SS_AUTO);
1605 mutex_unlock(&dev->od_otable_mutex);
1607 RETURN(rc == -EALREADY ? 0 : rc);
1610 static void do_osd_scrub_stop(struct osd_scrub *scrub)
1612 struct ptlrpc_thread *thread = &scrub->os_thread;
1613 struct l_wait_info lwi = { 0 };
1615 /* os_lock: sync status between stop and scrub thread */
1616 spin_lock(&scrub->os_lock);
1617 if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
1618 thread_set_flags(thread, SVC_STOPPING);
1619 spin_unlock(&scrub->os_lock);
1620 cfs_waitq_broadcast(&thread->t_ctl_waitq);
1621 l_wait_event(thread->t_ctl_waitq,
1622 thread_is_stopped(thread),
1624 /* Do not skip the last lock/unlock, which can guarantee that
1625 * the caller cannot return until the OI scrub thread exit. */
1626 spin_lock(&scrub->os_lock);
1628 spin_unlock(&scrub->os_lock);
1631 static void osd_scrub_stop(struct osd_device *dev)
1633 /* od_otable_mutex: prevent curcurrent start/stop */
1634 mutex_lock(&dev->od_otable_mutex);
1635 dev->od_scrub.os_paused = 1;
1636 do_osd_scrub_stop(&dev->od_scrub);
1637 mutex_unlock(&dev->od_otable_mutex);
1640 /* OI scrub setup/cleanup */
1642 static const char osd_scrub_name[] = "OI_scrub";
1644 int osd_scrub_setup(const struct lu_env *env, struct osd_device *dev)
1646 struct osd_thread_info *info = osd_oti_get(env);
1647 struct osd_scrub *scrub = &dev->od_scrub;
1648 struct lvfs_run_ctxt *ctxt = &scrub->os_ctxt;
1649 struct scrub_file *sf = &scrub->os_file;
1650 struct super_block *sb = osd_sb(dev);
1651 struct ldiskfs_super_block *es = LDISKFS_SB(sb)->s_es;
1652 struct lvfs_run_ctxt saved;
1658 memset(scrub, 0, sizeof(*scrub));
1659 OBD_SET_CTXT_MAGIC(ctxt);
1660 ctxt->pwdmnt = dev->od_mnt;
1661 ctxt->pwd = dev->od_mnt->mnt_root;
1662 ctxt->fs = get_ds();
1664 cfs_waitq_init(&scrub->os_thread.t_ctl_waitq);
1665 init_rwsem(&scrub->os_rwsem);
1666 spin_lock_init(&scrub->os_lock);
1667 CFS_INIT_LIST_HEAD(&scrub->os_inconsistent_items);
1669 push_ctxt(&saved, ctxt, NULL);
1670 filp = filp_open(osd_scrub_name, O_RDWR | O_CREAT, 0644);
1672 RETURN(PTR_ERR(filp));
1674 scrub->os_inode = igrab(filp->f_dentry->d_inode);
1675 filp_close(filp, 0);
1676 pop_ctxt(&saved, ctxt, NULL);
1677 ldiskfs_set_inode_state(scrub->os_inode,
1678 LDISKFS_STATE_LUSTRE_NO_OI);
1680 rc = osd_scrub_file_load(scrub);
1681 if (rc == -ENOENT) {
1682 osd_scrub_file_init(scrub, es->s_uuid);
1684 } else if (rc != 0) {
1687 if (memcmp(sf->sf_uuid, es->s_uuid, 16) != 0) {
1688 osd_scrub_file_reset(scrub, es->s_uuid,SF_INCONSISTENT);
1690 } else if (sf->sf_status == SS_SCANNING) {
1691 sf->sf_status = SS_CRASHED;
1696 if (sf->sf_pos_last_checkpoint != 0)
1697 scrub->os_pos_current = sf->sf_pos_last_checkpoint + 1;
1699 scrub->os_pos_current = LDISKFS_FIRST_INO(sb) + 1;
1702 rc = osd_scrub_file_store(scrub);
1707 /* Initialize OI files. */
1708 rc = osd_oi_init(info, dev);
1712 rc = osd_initial_OI_scrub(info, dev);
1713 if (rc == 0 && !dev->od_noscrub &&
1714 ((sf->sf_status == SS_PAUSED) ||
1715 (sf->sf_status == SS_CRASHED &&
1716 sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT | SF_UPGRADE |
1718 (sf->sf_status == SS_INIT &&
1719 sf->sf_flags & (SF_RECREATED | SF_INCONSISTENT | SF_UPGRADE))))
1720 rc = osd_scrub_start(dev);
1725 void osd_scrub_cleanup(const struct lu_env *env, struct osd_device *dev)
1727 struct osd_scrub *scrub = &dev->od_scrub;
1729 LASSERT(dev->od_otable_it == NULL);
1731 if (scrub->os_inode != NULL) {
1732 osd_scrub_stop(dev);
1733 iput(scrub->os_inode);
1734 scrub->os_inode = NULL;
1736 if (dev->od_oi_table != NULL)
1737 osd_oi_fini(osd_oti_get(env), dev);
1740 /* object table based iteration APIs */
1742 static struct dt_it *osd_otable_it_init(const struct lu_env *env,
1743 struct dt_object *dt, __u32 attr,
1744 struct lustre_capa *capa)
1746 enum dt_otable_it_flags flags = attr >> DT_OTABLE_IT_FLAGS_SHIFT;
1747 enum dt_otable_it_valid valid = attr & ~DT_OTABLE_IT_FLAGS_MASK;
1748 struct osd_device *dev = osd_dev(dt->do_lu.lo_dev);
1749 struct osd_scrub *scrub = &dev->od_scrub;
1750 struct osd_otable_it *it;
1755 /* od_otable_mutex: prevent curcurrent init/fini */
1756 mutex_lock(&dev->od_otable_mutex);
1757 if (dev->od_otable_it != NULL)
1758 GOTO(out, it = ERR_PTR(-EALREADY));
1762 GOTO(out, it = ERR_PTR(-ENOMEM));
1764 dev->od_otable_it = it;
1766 it->ooi_pid = cfs_curproc_pid();
1767 it->ooi_cache.ooc_consumer_idx = -1;
1768 if (flags & DOIF_OUTUSED)
1769 it->ooi_used_outside = 1;
1771 if (flags & DOIF_RESET)
1774 if (valid & DOIV_ERROR_HANDLE) {
1775 if (flags & DOIF_FAILOUT)
1776 start |= SS_SET_FAILOUT;
1778 start |= SS_CLEAR_FAILOUT;
1781 rc = do_osd_scrub_start(dev, start);
1782 if (rc < 0 && rc != -EALREADY) {
1783 dev->od_otable_it = NULL;
1785 GOTO(out, it = ERR_PTR(rc));
1788 it->ooi_cache.ooc_pos_preload = scrub->os_pos_current;
1793 mutex_unlock(&dev->od_otable_mutex);
1794 return (struct dt_it *)it;
1797 static void osd_otable_it_fini(const struct lu_env *env, struct dt_it *di)
1799 struct osd_otable_it *it = (struct osd_otable_it *)di;
1800 struct osd_device *dev = it->ooi_dev;
1802 /* od_otable_mutex: prevent curcurrent init/fini */
1803 mutex_lock(&dev->od_otable_mutex);
1804 do_osd_scrub_stop(&dev->od_scrub);
1805 LASSERT(dev->od_otable_it == it);
1807 dev->od_otable_it = NULL;
1808 mutex_unlock(&dev->od_otable_mutex);
1812 static int osd_otable_it_get(const struct lu_env *env,
1813 struct dt_it *di, const struct dt_key *key)
1821 * Sometimes the otable-based iteration driver (LFSCK) may be blocked in OSD
1822 * layer when someone wants to stop/pause the iteration. Under such case, we
1823 * need some mechanism to notify the event and wakeup the blocker.
1825 static void osd_otable_it_put(const struct lu_env *env, struct dt_it *di)
1827 struct osd_otable_it *it = (struct osd_otable_it *)di;
1828 struct osd_device *dev = it->ooi_dev;
1830 /* od_otable_mutex: prevent curcurrent init/fini */
1831 mutex_lock(&dev->od_otable_mutex);
1832 if (it->ooi_pid == cfs_curproc_pid()) {
1833 dev->od_scrub.os_paused = 1;
1835 struct ptlrpc_thread *thread = &dev->od_scrub.os_thread;
1837 it->ooi_stopping = 1;
1838 if (it->ooi_waiting)
1839 cfs_waitq_broadcast(&thread->t_ctl_waitq);
1841 mutex_unlock(&dev->od_otable_mutex);
1845 osd_otable_it_wakeup(struct osd_scrub *scrub, struct osd_otable_it *it)
1847 spin_lock(&scrub->os_lock);
1848 if (it->ooi_cache.ooc_pos_preload < scrub->os_pos_current ||
1849 scrub->os_waiting || it->ooi_stopping ||
1850 !thread_is_running(&scrub->os_thread))
1851 it->ooi_waiting = 0;
1853 it->ooi_waiting = 1;
1854 spin_unlock(&scrub->os_lock);
1856 return !it->ooi_waiting;
1859 static int osd_otable_it_next(const struct lu_env *env, struct dt_it *di)
1861 struct osd_otable_it *it = (struct osd_otable_it *)di;
1862 struct osd_device *dev = it->ooi_dev;
1863 struct osd_scrub *scrub = &dev->od_scrub;
1864 struct osd_otable_cache *ooc = &it->ooi_cache;
1865 struct ptlrpc_thread *thread = &scrub->os_thread;
1866 struct l_wait_info lwi = { 0 };
1870 LASSERT(it->ooi_user_ready);
1873 if (!thread_is_running(thread) && !it->ooi_used_outside)
1876 if (ooc->ooc_cached_items > 0) {
1877 ooc->ooc_cached_items--;
1878 ooc->ooc_consumer_idx = (ooc->ooc_consumer_idx + 1) &
1879 ~OSD_OTABLE_IT_CACHE_MASK;
1883 if (it->ooi_all_cached) {
1884 l_wait_event(thread->t_ctl_waitq,
1885 !thread_is_running(thread),
1890 if (scrub->os_waiting && osd_scrub_has_window(scrub, ooc)) {
1891 spin_lock(&scrub->os_lock);
1892 scrub->os_waiting = 0;
1893 cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
1894 spin_unlock(&scrub->os_lock);
1897 if (it->ooi_cache.ooc_pos_preload >= scrub->os_pos_current)
1898 l_wait_event(thread->t_ctl_waitq,
1899 osd_otable_it_wakeup(scrub, it),
1902 if (!thread_is_running(thread) && !it->ooi_used_outside)
1905 if (it->ooi_stopping)
1908 rc = osd_otable_it_preload(env, it);
1915 static struct dt_key *osd_otable_it_key(const struct lu_env *env,
1916 const struct dt_it *di)
1921 static int osd_otable_it_key_size(const struct lu_env *env,
1922 const struct dt_it *di)
1924 return sizeof(__u64);
1927 static int osd_otable_it_rec(const struct lu_env *env, const struct dt_it *di,
1928 struct dt_rec *rec, __u32 attr)
1930 struct osd_otable_it *it = (struct osd_otable_it *)di;
1931 struct osd_otable_cache *ooc = &it->ooi_cache;
1933 *(struct lu_fid *)rec = ooc->ooc_cache[ooc->ooc_consumer_idx].oic_fid;
1935 /* Filter out Invald FID already. */
1936 LASSERTF(fid_is_sane((struct lu_fid *)rec),
1937 "Invalid FID "DFID", p_idx = %d, c_idx = %d\n",
1938 PFID((struct lu_fid *)rec),
1939 ooc->ooc_producer_idx, ooc->ooc_consumer_idx);
1944 static __u64 osd_otable_it_store(const struct lu_env *env,
1945 const struct dt_it *di)
1947 struct osd_otable_it *it = (struct osd_otable_it *)di;
1948 struct osd_otable_cache *ooc = &it->ooi_cache;
1951 if (!it->ooi_user_ready)
1952 hash = ooc->ooc_pos_preload;
1953 else if (likely(ooc->ooc_consumer_idx != -1))
1954 hash = ooc->ooc_cache[ooc->ooc_consumer_idx].oic_lid.oii_ino;
1961 * Set the OSD layer iteration start position as the specified hash.
1963 static int osd_otable_it_load(const struct lu_env *env,
1964 const struct dt_it *di, __u64 hash)
1966 struct osd_otable_it *it = (struct osd_otable_it *)di;
1967 struct osd_device *dev = it->ooi_dev;
1968 struct osd_otable_cache *ooc = &it->ooi_cache;
1969 struct osd_scrub *scrub = &dev->od_scrub;
1973 /* Forbid to set iteration position after iteration started. */
1974 if (it->ooi_user_ready)
1977 if (hash > OSD_OTABLE_MAX_HASH)
1978 hash = OSD_OTABLE_MAX_HASH;
1980 ooc->ooc_pos_preload = hash;
1981 if (ooc->ooc_pos_preload <= LDISKFS_FIRST_INO(osd_sb(dev)))
1982 ooc->ooc_pos_preload = LDISKFS_FIRST_INO(osd_sb(dev)) + 1;
1984 it->ooi_user_ready = 1;
1985 if (!scrub->os_full_speed)
1986 cfs_waitq_broadcast(&scrub->os_thread.t_ctl_waitq);
1988 /* Unplug OSD layer iteration by the first next() call. */
1989 rc = osd_otable_it_next(env, (struct dt_it *)it);
1994 static int osd_otable_it_key_rec(const struct lu_env *env,
1995 const struct dt_it *di, void *key_rec)
2000 const struct dt_index_operations osd_otable_ops = {
2002 .init = osd_otable_it_init,
2003 .fini = osd_otable_it_fini,
2004 .get = osd_otable_it_get,
2005 .put = osd_otable_it_put,
2006 .next = osd_otable_it_next,
2007 .key = osd_otable_it_key,
2008 .key_size = osd_otable_it_key_size,
2009 .rec = osd_otable_it_rec,
2010 .store = osd_otable_it_store,
2011 .load = osd_otable_it_load,
2012 .key_rec = osd_otable_it_key_rec,
2016 /* high priority inconsistent items list APIs */
2018 int osd_oii_insert(struct osd_device *dev, struct osd_idmap_cache *oic,
2021 struct osd_inconsistent_item *oii;
2022 struct osd_scrub *scrub = &dev->od_scrub;
2023 struct ptlrpc_thread *thread = &scrub->os_thread;
2028 if (unlikely(oii == NULL))
2031 CFS_INIT_LIST_HEAD(&oii->oii_list);
2032 oii->oii_cache = *oic;
2033 oii->oii_insert = insert;
2035 spin_lock(&scrub->os_lock);
2036 if (unlikely(!thread_is_running(thread))) {
2037 spin_unlock(&scrub->os_lock);
2042 if (cfs_list_empty(&scrub->os_inconsistent_items))
2044 cfs_list_add_tail(&oii->oii_list, &scrub->os_inconsistent_items);
2045 spin_unlock(&scrub->os_lock);
2048 cfs_waitq_broadcast(&thread->t_ctl_waitq);
2053 int osd_oii_lookup(struct osd_device *dev, const struct lu_fid *fid,
2054 struct osd_inode_id *id)
2056 struct osd_scrub *scrub = &dev->od_scrub;
2057 struct osd_inconsistent_item *oii;
2060 spin_lock(&scrub->os_lock);
2061 cfs_list_for_each_entry(oii, &scrub->os_inconsistent_items, oii_list) {
2062 if (lu_fid_eq(fid, &oii->oii_cache.oic_fid)) {
2063 *id = oii->oii_cache.oic_lid;
2064 spin_unlock(&scrub->os_lock);
2068 spin_unlock(&scrub->os_lock);
2075 static const char *scrub_status_names[] = {
2086 static const char *scrub_flags_names[] = {
2094 static const char *scrub_param_names[] = {
2099 static int scrub_bits_dump(char **buf, int *len, int bits, const char *names[],
2107 rc = snprintf(*buf, *len, "%s:%c", prefix, bits != 0 ? ' ' : '\n');
2113 for (i = 0, flag = 1; bits != 0; i++, flag = 1 << i) {
2116 rc = snprintf(*buf, *len, "%s%c", names[i],
2117 bits != 0 ? ',' : '\n');
2128 static int scrub_time_dump(char **buf, int *len, __u64 time, const char *prefix)
2133 rc = snprintf(*buf, *len, "%s: "LPU64" seconds\n", prefix,
2134 cfs_time_current_sec() - time);
2136 rc = snprintf(*buf, *len, "%s: N/A\n", prefix);
2145 static int scrub_pos_dump(char **buf, int *len, __u64 pos, const char *prefix)
2150 rc = snprintf(*buf, *len, "%s: "LPU64"\n", prefix, pos);
2152 rc = snprintf(*buf, *len, "%s: N/A\n", prefix);
2161 int osd_scrub_dump(struct osd_device *dev, char *buf, int len)
2163 struct osd_scrub *scrub = &dev->od_scrub;
2164 struct scrub_file *sf = &scrub->os_file;
2171 down_read(&scrub->os_rwsem);
2172 rc = snprintf(buf, len,
2177 sf->sf_magic, (int)sf->sf_oi_count,
2178 scrub_status_names[sf->sf_status]);
2184 rc = scrub_bits_dump(&buf, &len, sf->sf_flags, scrub_flags_names,
2189 rc = scrub_bits_dump(&buf, &len, sf->sf_param, scrub_param_names,
2194 rc = scrub_time_dump(&buf, &len, sf->sf_time_last_complete,
2195 "time_since_last_completed");
2199 rc = scrub_time_dump(&buf, &len, sf->sf_time_latest_start,
2200 "time_since_latest_start");
2204 rc = scrub_time_dump(&buf, &len, sf->sf_time_last_checkpoint,
2205 "time_since_last_checkpoint");
2209 rc = scrub_pos_dump(&buf, &len, sf->sf_pos_latest_start,
2210 "latest_start_position");
2214 rc = scrub_pos_dump(&buf, &len, sf->sf_pos_last_checkpoint,
2215 "last_checkpoint_position");
2219 rc = scrub_pos_dump(&buf, &len, sf->sf_pos_first_inconsistent,
2220 "first_failure_position");
2224 checked = sf->sf_items_checked + scrub->os_new_checked;
2225 rc = snprintf(buf, len,
2226 "checked: "LPU64"\n"
2227 "updated: "LPU64"\n"
2229 "prior_updated: "LPU64"\n"
2230 "noscrub: "LPU64"\n"
2232 "success_count: %u\n",
2233 checked, sf->sf_items_updated, sf->sf_items_failed,
2234 sf->sf_items_updated_prior, sf->sf_items_noscrub,
2235 sf->sf_items_igif, sf->sf_success_count);
2242 if (thread_is_running(&scrub->os_thread)) {
2243 cfs_duration_t duration = cfs_time_current() -
2244 scrub->os_time_last_checkpoint;
2245 __u64 new_checked = scrub->os_new_checked * CFS_HZ;
2246 __u32 rtime = sf->sf_run_time +
2247 cfs_duration_sec(duration + HALF_SEC);
2250 do_div(new_checked, duration);
2252 do_div(speed, rtime);
2253 rc = snprintf(buf, len,
2254 "run_time: %u seconds\n"
2255 "average_speed: "LPU64" objects/sec\n"
2256 "real-time_speed: "LPU64" objects/sec\n"
2257 "current_position: %u\n",
2258 rtime, speed, new_checked, scrub->os_pos_current);
2260 if (sf->sf_run_time != 0)
2261 do_div(speed, sf->sf_run_time);
2262 rc = snprintf(buf, len,
2263 "run_time: %u seconds\n"
2264 "average_speed: "LPU64" objects/sec\n"
2265 "real-time_speed: N/A\n"
2266 "current_position: N/A\n",
2267 sf->sf_run_time, speed);
2277 up_read(&scrub->os_rwsem);