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, 2013, Intel Corporation.
26 * lustre/lfsck/lfsck_lib.c
28 * Author: Fan, Yong <fan.yong@intel.com>
32 # define EXPORT_SYMTAB
34 #define DEBUG_SUBSYSTEM S_LFSCK
36 #include <libcfs/list.h>
37 #include <lu_object.h>
38 #include <dt_object.h>
39 #include <lustre_lib.h>
40 #include <lustre_net.h>
41 #include <lustre_lfsck.h>
42 #include <lustre/lustre_lfsck_user.h>
44 #include "lfsck_internal.h"
46 /* define lfsck thread key */
47 LU_KEY_INIT(lfsck, struct lfsck_thread_info);
49 static void lfsck_key_fini(const struct lu_context *ctx,
50 struct lu_context_key *key, void *data)
52 struct lfsck_thread_info *info = data;
54 lu_buf_free(&info->lti_linkea_buf);
58 LU_CONTEXT_KEY_DEFINE(lfsck, LCT_MD_THREAD | LCT_DT_THREAD);
59 LU_KEY_INIT_GENERIC(lfsck);
61 static CFS_LIST_HEAD(lfsck_instance_list);
62 static DEFINE_SPINLOCK(lfsck_instance_lock);
64 const char *lfsck_status_names[] = {
76 const char *lfsck_flags_names[] = {
83 const char *lfsck_param_names[] = {
89 static inline mdsno_t lfsck_dev_idx(struct dt_device *dev)
91 return dev->dd_lu_dev.ld_site->ld_seq_site->ss_node_id;
94 static inline void lfsck_component_get(struct lfsck_component *com)
96 atomic_inc(&com->lc_ref);
99 static inline void lfsck_component_put(const struct lu_env *env,
100 struct lfsck_component *com)
102 if (atomic_dec_and_test(&com->lc_ref)) {
103 if (com->lc_obj != NULL)
104 lu_object_put(env, &com->lc_obj->do_lu);
105 if (com->lc_file_ram != NULL)
106 OBD_FREE(com->lc_file_ram, com->lc_file_size);
107 if (com->lc_file_disk != NULL)
108 OBD_FREE(com->lc_file_disk, com->lc_file_size);
113 static inline struct lfsck_component *
114 __lfsck_component_find(struct lfsck_instance *lfsck, __u16 type, cfs_list_t *list)
116 struct lfsck_component *com;
118 cfs_list_for_each_entry(com, list, lc_link) {
119 if (com->lc_type == type)
125 static struct lfsck_component *
126 lfsck_component_find(struct lfsck_instance *lfsck, __u16 type)
128 struct lfsck_component *com;
130 spin_lock(&lfsck->li_lock);
131 com = __lfsck_component_find(lfsck, type, &lfsck->li_list_scan);
135 com = __lfsck_component_find(lfsck, type,
136 &lfsck->li_list_double_scan);
140 com = __lfsck_component_find(lfsck, type, &lfsck->li_list_idle);
144 lfsck_component_get(com);
145 spin_unlock(&lfsck->li_lock);
149 void lfsck_component_cleanup(const struct lu_env *env,
150 struct lfsck_component *com)
152 if (!cfs_list_empty(&com->lc_link))
153 cfs_list_del_init(&com->lc_link);
154 if (!cfs_list_empty(&com->lc_link_dir))
155 cfs_list_del_init(&com->lc_link_dir);
157 lfsck_component_put(env, com);
160 static void lfsck_instance_cleanup(const struct lu_env *env,
161 struct lfsck_instance *lfsck)
163 struct ptlrpc_thread *thread = &lfsck->li_thread;
164 struct lfsck_component *com;
167 LASSERT(list_empty(&lfsck->li_link));
168 LASSERT(thread_is_init(thread) || thread_is_stopped(thread));
170 if (lfsck->li_obj_oit != NULL) {
171 lu_object_put(env, &lfsck->li_obj_oit->do_lu);
172 lfsck->li_obj_oit = NULL;
175 LASSERT(lfsck->li_obj_dir == NULL);
177 while (!cfs_list_empty(&lfsck->li_list_scan)) {
178 com = cfs_list_entry(lfsck->li_list_scan.next,
179 struct lfsck_component,
181 lfsck_component_cleanup(env, com);
184 LASSERT(cfs_list_empty(&lfsck->li_list_dir));
186 while (!cfs_list_empty(&lfsck->li_list_double_scan)) {
187 com = cfs_list_entry(lfsck->li_list_double_scan.next,
188 struct lfsck_component,
190 lfsck_component_cleanup(env, com);
193 while (!cfs_list_empty(&lfsck->li_list_idle)) {
194 com = cfs_list_entry(lfsck->li_list_idle.next,
195 struct lfsck_component,
197 lfsck_component_cleanup(env, com);
200 if (lfsck->li_bookmark_obj != NULL) {
201 lu_object_put(env, &lfsck->li_bookmark_obj->do_lu);
202 lfsck->li_bookmark_obj = NULL;
205 if (lfsck->li_los != NULL) {
206 local_oid_storage_fini(env, lfsck->li_los);
207 lfsck->li_los = NULL;
210 if (lfsck->li_local_root != NULL) {
211 lu_object_put(env, &lfsck->li_local_root->do_lu);
212 lfsck->li_local_root = NULL;
218 static inline void lfsck_instance_get(struct lfsck_instance *lfsck)
220 atomic_inc(&lfsck->li_ref);
223 static inline void lfsck_instance_put(const struct lu_env *env,
224 struct lfsck_instance *lfsck)
226 if (atomic_dec_and_test(&lfsck->li_ref))
227 lfsck_instance_cleanup(env, lfsck);
230 static inline struct lfsck_instance *lfsck_instance_find(struct dt_device *key,
231 bool ref, bool unlink)
233 struct lfsck_instance *lfsck;
235 spin_lock(&lfsck_instance_lock);
236 cfs_list_for_each_entry(lfsck, &lfsck_instance_list, li_link) {
237 if (lfsck->li_bottom == key) {
239 lfsck_instance_get(lfsck);
241 list_del_init(&lfsck->li_link);
242 spin_unlock(&lfsck_instance_lock);
246 spin_unlock(&lfsck_instance_lock);
250 static inline int lfsck_instance_add(struct lfsck_instance *lfsck)
252 struct lfsck_instance *tmp;
254 spin_lock(&lfsck_instance_lock);
255 cfs_list_for_each_entry(tmp, &lfsck_instance_list, li_link) {
256 if (lfsck->li_bottom == tmp->li_bottom) {
257 spin_unlock(&lfsck_instance_lock);
262 cfs_list_add_tail(&lfsck->li_link, &lfsck_instance_list);
263 spin_unlock(&lfsck_instance_lock);
267 int lfsck_bits_dump(char **buf, int *len, int bits, const char *names[],
275 rc = snprintf(*buf, *len, "%s:%c", prefix, bits != 0 ? ' ' : '\n');
281 for (i = 0, flag = 1; bits != 0; i++, flag = 1 << i) {
284 rc = snprintf(*buf, *len, "%s%c", names[i],
285 bits != 0 ? ',' : '\n');
296 int lfsck_time_dump(char **buf, int *len, __u64 time, const char *prefix)
301 rc = snprintf(*buf, *len, "%s: "LPU64" seconds\n", prefix,
302 cfs_time_current_sec() - time);
304 rc = snprintf(*buf, *len, "%s: N/A\n", prefix);
313 int lfsck_pos_dump(char **buf, int *len, struct lfsck_position *pos,
318 if (fid_is_zero(&pos->lp_dir_parent)) {
319 if (pos->lp_oit_cookie == 0)
320 rc = snprintf(*buf, *len, "%s: N/A, N/A, N/A\n",
323 rc = snprintf(*buf, *len, "%s: "LPU64", N/A, N/A\n",
324 prefix, pos->lp_oit_cookie);
326 rc = snprintf(*buf, *len, "%s: "LPU64", "DFID", "LPU64"\n",
327 prefix, pos->lp_oit_cookie,
328 PFID(&pos->lp_dir_parent), pos->lp_dir_cookie);
338 void lfsck_pos_fill(const struct lu_env *env, struct lfsck_instance *lfsck,
339 struct lfsck_position *pos, bool init)
341 const struct dt_it_ops *iops = &lfsck->li_obj_oit->do_index_ops->dio_it;
343 if (unlikely(lfsck->li_di_oit == NULL)) {
344 memset(pos, 0, sizeof(*pos));
348 pos->lp_oit_cookie = iops->store(env, lfsck->li_di_oit);
349 if (!lfsck->li_current_oit_processed && !init)
350 pos->lp_oit_cookie--;
352 LASSERT(pos->lp_oit_cookie > 0);
354 if (lfsck->li_di_dir != NULL) {
355 struct dt_object *dto = lfsck->li_obj_dir;
357 pos->lp_dir_cookie = dto->do_index_ops->dio_it.store(env,
360 if (pos->lp_dir_cookie >= MDS_DIR_END_OFF) {
361 fid_zero(&pos->lp_dir_parent);
362 pos->lp_dir_cookie = 0;
364 pos->lp_dir_parent = *lu_object_fid(&dto->do_lu);
367 fid_zero(&pos->lp_dir_parent);
368 pos->lp_dir_cookie = 0;
372 static void __lfsck_set_speed(struct lfsck_instance *lfsck, __u32 limit)
374 lfsck->li_bookmark_ram.lb_speed_limit = limit;
375 if (limit != LFSCK_SPEED_NO_LIMIT) {
376 if (limit > CFS_HZ) {
377 lfsck->li_sleep_rate = limit / CFS_HZ;
378 lfsck->li_sleep_jif = 1;
380 lfsck->li_sleep_rate = 1;
381 lfsck->li_sleep_jif = CFS_HZ / limit;
384 lfsck->li_sleep_jif = 0;
385 lfsck->li_sleep_rate = 0;
389 void lfsck_control_speed(struct lfsck_instance *lfsck)
391 struct ptlrpc_thread *thread = &lfsck->li_thread;
392 struct l_wait_info lwi;
394 if (lfsck->li_sleep_jif > 0 &&
395 lfsck->li_new_scanned >= lfsck->li_sleep_rate) {
396 spin_lock(&lfsck->li_lock);
397 if (likely(lfsck->li_sleep_jif > 0 &&
398 lfsck->li_new_scanned >= lfsck->li_sleep_rate)) {
399 lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL,
400 LWI_ON_SIGNAL_NOOP, NULL);
401 spin_unlock(&lfsck->li_lock);
403 l_wait_event(thread->t_ctl_waitq,
404 !thread_is_running(thread),
406 lfsck->li_new_scanned = 0;
408 spin_unlock(&lfsck->li_lock);
413 static int lfsck_parent_fid(const struct lu_env *env, struct dt_object *obj,
416 if (unlikely(!S_ISDIR(lfsck_object_type(obj)) ||
417 !dt_try_as_dir(env, obj)))
420 return dt_lookup(env, obj, (struct dt_rec *)fid,
421 (const struct dt_key *)"..", BYPASS_CAPA);
424 static int lfsck_needs_scan_dir(const struct lu_env *env,
425 struct lfsck_instance *lfsck,
426 struct dt_object *obj)
428 struct lu_fid *fid = &lfsck_env_info(env)->lti_fid;
432 if (!lfsck->li_master || !S_ISDIR(lfsck_object_type(obj)) ||
433 cfs_list_empty(&lfsck->li_list_dir))
437 /* XXX: Currently, we do not scan the "/REMOTE_PARENT_DIR",
438 * which is the agent directory to manage the objects
439 * which name entries reside on remote MDTs. Related
440 * consistency verification will be processed in LFSCK
442 if (lu_fid_eq(lfsck_dto2fid(obj), &lfsck->li_global_root_fid)) {
444 lfsck_object_put(env, obj);
448 /* .lustre doesn't contain "real" user objects, no need lfsck */
449 if (fid_is_dot_lustre(lfsck_dto2fid(obj))) {
451 lfsck_object_put(env, obj);
455 dt_read_lock(env, obj, MOR_TGT_CHILD);
456 if (unlikely(lfsck_is_dead_obj(obj))) {
457 dt_read_unlock(env, obj);
459 lfsck_object_put(env, obj);
463 rc = dt_xattr_get(env, obj,
464 lfsck_buf_get(env, NULL, 0), XATTR_NAME_LINK,
466 dt_read_unlock(env, obj);
469 lfsck_object_put(env, obj);
473 if (rc < 0 && rc != -ENODATA) {
475 lfsck_object_put(env, obj);
479 rc = lfsck_parent_fid(env, obj, fid);
481 lfsck_object_put(env, obj);
485 if (unlikely(lu_fid_eq(fid,
486 lfsck_dto2fid(lfsck->li_local_root))))
489 obj = lfsck_object_find(env, lfsck, fid);
492 else if (IS_ERR(obj))
495 if (!dt_object_exists(obj)) {
496 lfsck_object_put(env, obj);
500 /* Currently, only client visible directory can be remote. */
501 if (dt_object_remote(obj)) {
502 lfsck_object_put(env, obj);
511 /* LFSCK wrap functions */
513 void lfsck_fail(const struct lu_env *env, struct lfsck_instance *lfsck,
516 struct lfsck_component *com;
518 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
519 com->lc_ops->lfsck_fail(env, com, new_checked);
523 int lfsck_checkpoint(const struct lu_env *env, struct lfsck_instance *lfsck)
525 struct lfsck_component *com;
528 if (likely(cfs_time_beforeq(cfs_time_current(),
529 lfsck->li_time_next_checkpoint)))
532 lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, false);
533 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
534 rc = com->lc_ops->lfsck_checkpoint(env, com, false);
539 lfsck->li_time_last_checkpoint = cfs_time_current();
540 lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
541 cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
545 int lfsck_prep(const struct lu_env *env, struct lfsck_instance *lfsck)
547 struct dt_object *obj = NULL;
548 struct lfsck_component *com;
549 struct lfsck_component *next;
550 struct lfsck_position *pos = NULL;
551 const struct dt_it_ops *iops =
552 &lfsck->li_obj_oit->do_index_ops->dio_it;
557 LASSERT(lfsck->li_obj_dir == NULL);
558 LASSERT(lfsck->li_di_dir == NULL);
560 lfsck->li_current_oit_processed = 0;
561 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan, lc_link) {
562 com->lc_new_checked = 0;
563 if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN)
566 rc = com->lc_ops->lfsck_prep(env, com);
571 (!lfsck_pos_is_zero(&com->lc_pos_start) &&
572 lfsck_pos_is_eq(pos, &com->lc_pos_start) > 0))
573 pos = &com->lc_pos_start;
576 /* Init otable-based iterator. */
578 rc = iops->load(env, lfsck->li_di_oit, 0);
580 lfsck->li_oit_over = 1;
587 rc = iops->load(env, lfsck->li_di_oit, pos->lp_oit_cookie);
591 lfsck->li_oit_over = 1;
593 if (!lfsck->li_master || fid_is_zero(&pos->lp_dir_parent))
596 /* Find the directory for namespace-based traverse. */
597 obj = lfsck_object_find(env, lfsck, &pos->lp_dir_parent);
600 else if (IS_ERR(obj))
601 RETURN(PTR_ERR(obj));
603 /* XXX: Currently, skip remote object, the consistency for
604 * remote object will be processed in LFSCK phase III. */
605 if (!dt_object_exists(obj) || dt_object_remote(obj) ||
606 unlikely(!S_ISDIR(lfsck_object_type(obj))))
609 if (unlikely(!dt_try_as_dir(env, obj)))
610 GOTO(out, rc = -ENOTDIR);
612 /* Init the namespace-based directory traverse. */
613 iops = &obj->do_index_ops->dio_it;
614 di = iops->init(env, obj, lfsck->li_args_dir, BYPASS_CAPA);
616 GOTO(out, rc = PTR_ERR(di));
618 LASSERT(pos->lp_dir_cookie < MDS_DIR_END_OFF);
620 rc = iops->load(env, di, pos->lp_dir_cookie);
621 if ((rc == 0) || (rc > 0 && pos->lp_dir_cookie > 0))
622 rc = iops->next(env, di);
632 lfsck->li_obj_dir = lfsck_object_get(obj);
633 lfsck->li_cookie_dir = iops->store(env, di);
634 spin_lock(&lfsck->li_lock);
635 lfsck->li_di_dir = di;
636 spin_unlock(&lfsck->li_lock);
642 lfsck_object_put(env, obj);
645 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan,
647 com->lc_ops->lfsck_post(env, com, rc, true);
653 lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, true);
654 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
655 rc = com->lc_ops->lfsck_checkpoint(env, com, true);
660 lfsck->li_time_last_checkpoint = cfs_time_current();
661 lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
662 cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
666 int lfsck_exec_oit(const struct lu_env *env, struct lfsck_instance *lfsck,
667 struct dt_object *obj)
669 struct lfsck_component *com;
670 const struct dt_it_ops *iops;
675 LASSERT(lfsck->li_obj_dir == NULL);
677 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
678 rc = com->lc_ops->lfsck_exec_oit(env, com, obj);
683 rc = lfsck_needs_scan_dir(env, lfsck, obj);
687 if (unlikely(!dt_try_as_dir(env, obj)))
688 GOTO(out, rc = -ENOTDIR);
690 iops = &obj->do_index_ops->dio_it;
691 di = iops->init(env, obj, lfsck->li_args_dir, BYPASS_CAPA);
693 GOTO(out, rc = PTR_ERR(di));
695 rc = iops->load(env, di, 0);
697 rc = iops->next(env, di);
707 lfsck->li_obj_dir = lfsck_object_get(obj);
708 lfsck->li_cookie_dir = iops->store(env, di);
709 spin_lock(&lfsck->li_lock);
710 lfsck->li_di_dir = di;
711 spin_unlock(&lfsck->li_lock);
717 lfsck_fail(env, lfsck, false);
718 return (rc > 0 ? 0 : rc);
721 int lfsck_exec_dir(const struct lu_env *env, struct lfsck_instance *lfsck,
722 struct dt_object *obj, struct lu_dirent *ent)
724 struct lfsck_component *com;
727 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
728 rc = com->lc_ops->lfsck_exec_dir(env, com, obj, ent);
735 int lfsck_post(const struct lu_env *env, struct lfsck_instance *lfsck,
738 struct lfsck_component *com;
739 struct lfsck_component *next;
742 lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, false);
743 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan, lc_link) {
744 rc = com->lc_ops->lfsck_post(env, com, result, false);
749 lfsck->li_time_last_checkpoint = cfs_time_current();
750 lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
751 cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
755 int lfsck_double_scan(const struct lu_env *env, struct lfsck_instance *lfsck)
757 struct lfsck_component *com;
758 struct lfsck_component *next;
761 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_double_scan,
763 if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN)
766 rc = com->lc_ops->lfsck_double_scan(env, com);
773 /* external interfaces */
775 int lfsck_get_speed(struct dt_device *key, void *buf, int len)
778 struct lfsck_instance *lfsck;
782 lfsck = lfsck_instance_find(key, true, false);
783 if (unlikely(lfsck == NULL))
786 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
790 rc = snprintf(buf, len, "%u\n", lfsck->li_bookmark_ram.lb_speed_limit);
796 lfsck_instance_put(&env, lfsck);
799 EXPORT_SYMBOL(lfsck_get_speed);
801 int lfsck_set_speed(struct dt_device *key, int val)
804 struct lfsck_instance *lfsck;
808 lfsck = lfsck_instance_find(key, true, false);
809 if (unlikely(lfsck == NULL))
812 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
816 mutex_lock(&lfsck->li_mutex);
817 __lfsck_set_speed(lfsck, val);
818 rc = lfsck_bookmark_store(&env, lfsck);
819 mutex_unlock(&lfsck->li_mutex);
825 lfsck_instance_put(&env, lfsck);
828 EXPORT_SYMBOL(lfsck_set_speed);
830 int lfsck_dump(struct dt_device *key, void *buf, int len, __u16 type)
833 struct lfsck_instance *lfsck;
834 struct lfsck_component *com = NULL;
838 lfsck = lfsck_instance_find(key, true, false);
839 if (unlikely(lfsck == NULL))
842 com = lfsck_component_find(lfsck, type);
844 GOTO(out, rc = -ENOTSUPP);
846 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
850 rc = com->lc_ops->lfsck_dump(&env, com, buf, len);
857 lfsck_component_put(&env, com);
858 lfsck_instance_put(&env, lfsck);
861 EXPORT_SYMBOL(lfsck_dump);
863 int lfsck_start(const struct lu_env *env, struct dt_device *key,
864 struct lfsck_start_param *lsp)
866 struct lfsck_start *start = lsp->lsp_start;
867 struct lfsck_instance *lfsck;
868 struct lfsck_bookmark *bk;
869 struct ptlrpc_thread *thread;
870 struct lfsck_component *com;
871 struct l_wait_info lwi = { 0 };
878 lfsck = lfsck_instance_find(key, true, false);
879 if (unlikely(lfsck == NULL))
882 /* start == NULL means auto trigger paused LFSCK. */
883 if ((start == NULL) &&
884 (cfs_list_empty(&lfsck->li_list_scan) ||
885 OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_AUTO)))
888 bk = &lfsck->li_bookmark_ram;
889 thread = &lfsck->li_thread;
890 mutex_lock(&lfsck->li_mutex);
891 spin_lock(&lfsck->li_lock);
892 if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
893 spin_unlock(&lfsck->li_lock);
894 GOTO(out, rc = -EALREADY);
897 spin_unlock(&lfsck->li_lock);
899 lfsck->li_namespace = lsp->lsp_namespace;
900 lfsck->li_paused = 0;
901 lfsck->li_oit_over = 0;
902 lfsck->li_drop_dryrun = 0;
903 lfsck->li_new_scanned = 0;
905 /* For auto trigger. */
909 start->ls_version = bk->lb_version;
910 if (start->ls_valid & LSV_SPEED_LIMIT) {
911 __lfsck_set_speed(lfsck, start->ls_speed_limit);
915 if (start->ls_valid & LSV_ERROR_HANDLE) {
916 valid |= DOIV_ERROR_HANDLE;
917 if (start->ls_flags & LPF_FAILOUT)
918 flags |= DOIF_FAILOUT;
920 if ((start->ls_flags & LPF_FAILOUT) &&
921 !(bk->lb_param & LPF_FAILOUT)) {
922 bk->lb_param |= LPF_FAILOUT;
924 } else if (!(start->ls_flags & LPF_FAILOUT) &&
925 (bk->lb_param & LPF_FAILOUT)) {
926 bk->lb_param &= ~LPF_FAILOUT;
931 if (start->ls_valid & LSV_DRYRUN) {
932 if ((start->ls_flags & LPF_DRYRUN) &&
933 !(bk->lb_param & LPF_DRYRUN)) {
934 bk->lb_param |= LPF_DRYRUN;
936 } else if (!(start->ls_flags & LPF_DRYRUN) &&
937 (bk->lb_param & LPF_DRYRUN)) {
938 bk->lb_param &= ~LPF_DRYRUN;
939 lfsck->li_drop_dryrun = 1;
945 rc = lfsck_bookmark_store(env, lfsck);
950 if (start->ls_flags & LPF_RESET)
953 if (start->ls_active != 0) {
954 struct lfsck_component *next;
957 if (start->ls_active == LFSCK_TYPES_ALL)
958 start->ls_active = LFSCK_TYPES_SUPPORTED;
960 if (start->ls_active & ~LFSCK_TYPES_SUPPORTED) {
961 start->ls_active &= ~LFSCK_TYPES_SUPPORTED;
962 GOTO(out, rc = -ENOTSUPP);
965 cfs_list_for_each_entry_safe(com, next,
966 &lfsck->li_list_scan, lc_link) {
967 if (!(com->lc_type & start->ls_active)) {
968 rc = com->lc_ops->lfsck_post(env, com, 0,
975 while (start->ls_active != 0) {
976 if (type & start->ls_active) {
977 com = __lfsck_component_find(lfsck, type,
978 &lfsck->li_list_idle);
980 /* The component status will be updated
981 * when its prep() is called later by
982 * the LFSCK main engine. */
983 cfs_list_del_init(&com->lc_link);
984 cfs_list_add_tail(&com->lc_link,
985 &lfsck->li_list_scan);
987 start->ls_active &= ~type;
993 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
994 start->ls_active |= com->lc_type;
995 if (flags & DOIF_RESET) {
996 rc = com->lc_ops->lfsck_reset(env, com, false);
1003 lfsck->li_args_dir = LUDA_64BITHASH | LUDA_VERIFY;
1004 if (bk->lb_param & LPF_DRYRUN)
1005 lfsck->li_args_dir |= LUDA_VERIFY_DRYRUN;
1007 if (bk->lb_param & LPF_FAILOUT) {
1008 valid |= DOIV_ERROR_HANDLE;
1009 flags |= DOIF_FAILOUT;
1012 if (!cfs_list_empty(&lfsck->li_list_scan))
1013 flags |= DOIF_OUTUSED;
1015 lfsck->li_args_oit = (flags << DT_OTABLE_IT_FLAGS_SHIFT) | valid;
1016 thread_set_flags(thread, 0);
1017 if (lfsck->li_master)
1018 rc = PTR_ERR(kthread_run(lfsck_master_engine, lfsck, "lfsck"));
1020 CERROR("%s: cannot start LFSCK thread, rc = %d\n",
1021 lfsck_lfsck2name(lfsck), rc);
1023 l_wait_event(thread->t_ctl_waitq,
1024 thread_is_running(thread) ||
1025 thread_is_stopped(thread),
1031 mutex_unlock(&lfsck->li_mutex);
1033 lfsck_instance_put(env, lfsck);
1034 return (rc < 0 ? rc : 0);
1036 EXPORT_SYMBOL(lfsck_start);
1038 int lfsck_stop(const struct lu_env *env, struct dt_device *key, bool pause)
1040 struct lfsck_instance *lfsck;
1041 struct ptlrpc_thread *thread;
1042 struct l_wait_info lwi = { 0 };
1045 lfsck = lfsck_instance_find(key, true, false);
1046 if (unlikely(lfsck == NULL))
1049 thread = &lfsck->li_thread;
1050 mutex_lock(&lfsck->li_mutex);
1051 spin_lock(&lfsck->li_lock);
1052 if (thread_is_init(thread) || thread_is_stopped(thread)) {
1053 spin_unlock(&lfsck->li_lock);
1054 mutex_unlock(&lfsck->li_mutex);
1055 lfsck_instance_put(env, lfsck);
1060 lfsck->li_paused = 1;
1061 thread_set_flags(thread, SVC_STOPPING);
1062 spin_unlock(&lfsck->li_lock);
1064 cfs_waitq_broadcast(&thread->t_ctl_waitq);
1065 l_wait_event(thread->t_ctl_waitq,
1066 thread_is_stopped(thread),
1068 mutex_unlock(&lfsck->li_mutex);
1069 lfsck_instance_put(env, lfsck);
1073 EXPORT_SYMBOL(lfsck_stop);
1075 int lfsck_register(const struct lu_env *env, struct dt_device *key,
1076 struct dt_device *next, bool master)
1078 struct lfsck_instance *lfsck;
1079 struct dt_object *root;
1080 struct dt_object *obj;
1081 struct lu_fid *fid = &lfsck_env_info(env)->lti_fid;
1085 lfsck = lfsck_instance_find(key, false, false);
1086 if (unlikely(lfsck != NULL))
1089 OBD_ALLOC_PTR(lfsck);
1093 mutex_init(&lfsck->li_mutex);
1094 spin_lock_init(&lfsck->li_lock);
1095 CFS_INIT_LIST_HEAD(&lfsck->li_link);
1096 CFS_INIT_LIST_HEAD(&lfsck->li_list_scan);
1097 CFS_INIT_LIST_HEAD(&lfsck->li_list_dir);
1098 CFS_INIT_LIST_HEAD(&lfsck->li_list_double_scan);
1099 CFS_INIT_LIST_HEAD(&lfsck->li_list_idle);
1100 atomic_set(&lfsck->li_ref, 1);
1101 cfs_waitq_init(&lfsck->li_thread.t_ctl_waitq);
1102 lfsck->li_next = next;
1103 lfsck->li_bottom = key;
1105 fid->f_seq = FID_SEQ_LOCAL_NAME;
1108 rc = local_oid_storage_init(env, lfsck->li_bottom, fid, &lfsck->li_los);
1112 rc = dt_root_get(env, key, fid);
1116 root = dt_locate(env, lfsck->li_bottom, fid);
1118 GOTO(out, rc = PTR_ERR(root));
1120 lfsck->li_local_root = root;
1121 dt_try_as_dir(env, root);
1123 lfsck->li_master = 1;
1124 if (lfsck_dev_idx(lfsck->li_bottom) == 0) {
1125 rc = dt_lookup(env, root,
1126 (struct dt_rec *)(&lfsck->li_global_root_fid),
1127 (const struct dt_key *)"ROOT", BYPASS_CAPA);
1133 fid->f_seq = FID_SEQ_LOCAL_FILE;
1134 fid->f_oid = OTABLE_IT_OID;
1136 obj = dt_locate(env, lfsck->li_bottom, fid);
1138 GOTO(out, rc = PTR_ERR(obj));
1140 lfsck->li_obj_oit = obj;
1141 rc = obj->do_ops->do_index_try(env, obj, &dt_otable_features);
1143 if (rc == -ENOTSUPP)
1149 rc = lfsck_bookmark_setup(env, lfsck);
1154 rc = lfsck_namespace_setup(env, lfsck);
1159 /* XXX: more LFSCK components initialization to be added here. */
1162 rc = lfsck_instance_add(lfsck);
1165 lfsck_instance_cleanup(env, lfsck);
1168 EXPORT_SYMBOL(lfsck_register);
1170 void lfsck_degister(const struct lu_env *env, struct dt_device *key)
1172 struct lfsck_instance *lfsck;
1174 lfsck = lfsck_instance_find(key, false, true);
1176 lfsck_instance_put(env, lfsck);
1178 EXPORT_SYMBOL(lfsck_degister);
1180 static int __init lfsck_init(void)
1184 lfsck_key_init_generic(&lfsck_thread_key, NULL);
1185 rc = lu_context_key_register(&lfsck_thread_key);
1189 static void __exit lfsck_exit(void)
1191 LASSERT(cfs_list_empty(&lfsck_instance_list));
1193 lu_context_key_degister(&lfsck_thread_key);
1196 MODULE_AUTHOR("Intel Corporation <http://www.intel.com/>");
1197 MODULE_DESCRIPTION("LFSCK");
1198 MODULE_LICENSE("GPL");
1200 cfs_module(lfsck, LUSTRE_VERSION_STRING, lfsck_init, lfsck_exit);