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>
31 #define DEBUG_SUBSYSTEM S_LFSCK
33 #include <libcfs/list.h>
34 #include <lu_object.h>
35 #include <dt_object.h>
36 #include <md_object.h>
37 #include <lustre_fld.h>
38 #include <lustre_lib.h>
39 #include <lustre_net.h>
40 #include <lustre_lfsck.h>
41 #include <lustre/lustre_lfsck_user.h>
43 #include "lfsck_internal.h"
45 /* define lfsck thread key */
46 LU_KEY_INIT(lfsck, struct lfsck_thread_info);
48 static void lfsck_key_fini(const struct lu_context *ctx,
49 struct lu_context_key *key, void *data)
51 struct lfsck_thread_info *info = data;
53 lu_buf_free(&info->lti_linkea_buf);
57 LU_CONTEXT_KEY_DEFINE(lfsck, LCT_MD_THREAD | LCT_DT_THREAD);
58 LU_KEY_INIT_GENERIC(lfsck);
60 static CFS_LIST_HEAD(lfsck_instance_list);
61 static DEFINE_SPINLOCK(lfsck_instance_lock);
63 const char *lfsck_status_names[] = {
75 const char *lfsck_flags_names[] = {
82 const char *lfsck_param_names[] = {
88 static inline mdsno_t lfsck_dev_idx(struct dt_device *dev)
90 return dev->dd_lu_dev.ld_site->ld_seq_site->ss_node_id;
93 static inline void lfsck_component_get(struct lfsck_component *com)
95 atomic_inc(&com->lc_ref);
98 static inline void lfsck_component_put(const struct lu_env *env,
99 struct lfsck_component *com)
101 if (atomic_dec_and_test(&com->lc_ref)) {
102 if (com->lc_obj != NULL)
103 lu_object_put(env, &com->lc_obj->do_lu);
104 if (com->lc_file_ram != NULL)
105 OBD_FREE(com->lc_file_ram, com->lc_file_size);
106 if (com->lc_file_disk != NULL)
107 OBD_FREE(com->lc_file_disk, com->lc_file_size);
112 static inline struct lfsck_component *
113 __lfsck_component_find(struct lfsck_instance *lfsck, __u16 type, cfs_list_t *list)
115 struct lfsck_component *com;
117 cfs_list_for_each_entry(com, list, lc_link) {
118 if (com->lc_type == type)
124 static struct lfsck_component *
125 lfsck_component_find(struct lfsck_instance *lfsck, __u16 type)
127 struct lfsck_component *com;
129 spin_lock(&lfsck->li_lock);
130 com = __lfsck_component_find(lfsck, type, &lfsck->li_list_scan);
134 com = __lfsck_component_find(lfsck, type,
135 &lfsck->li_list_double_scan);
139 com = __lfsck_component_find(lfsck, type, &lfsck->li_list_idle);
143 lfsck_component_get(com);
144 spin_unlock(&lfsck->li_lock);
148 void lfsck_component_cleanup(const struct lu_env *env,
149 struct lfsck_component *com)
151 if (!cfs_list_empty(&com->lc_link))
152 cfs_list_del_init(&com->lc_link);
153 if (!cfs_list_empty(&com->lc_link_dir))
154 cfs_list_del_init(&com->lc_link_dir);
156 lfsck_component_put(env, com);
159 static void lfsck_instance_cleanup(const struct lu_env *env,
160 struct lfsck_instance *lfsck)
162 struct ptlrpc_thread *thread = &lfsck->li_thread;
163 struct lfsck_component *com;
166 LASSERT(list_empty(&lfsck->li_link));
167 LASSERT(thread_is_init(thread) || thread_is_stopped(thread));
169 if (lfsck->li_obj_oit != NULL) {
170 lu_object_put(env, &lfsck->li_obj_oit->do_lu);
171 lfsck->li_obj_oit = NULL;
174 LASSERT(lfsck->li_obj_dir == NULL);
176 while (!cfs_list_empty(&lfsck->li_list_scan)) {
177 com = cfs_list_entry(lfsck->li_list_scan.next,
178 struct lfsck_component,
180 lfsck_component_cleanup(env, com);
183 LASSERT(cfs_list_empty(&lfsck->li_list_dir));
185 while (!cfs_list_empty(&lfsck->li_list_double_scan)) {
186 com = cfs_list_entry(lfsck->li_list_double_scan.next,
187 struct lfsck_component,
189 lfsck_component_cleanup(env, com);
192 while (!cfs_list_empty(&lfsck->li_list_idle)) {
193 com = cfs_list_entry(lfsck->li_list_idle.next,
194 struct lfsck_component,
196 lfsck_component_cleanup(env, com);
199 if (lfsck->li_bookmark_obj != NULL) {
200 lu_object_put(env, &lfsck->li_bookmark_obj->do_lu);
201 lfsck->li_bookmark_obj = NULL;
204 if (lfsck->li_los != NULL) {
205 local_oid_storage_fini(env, lfsck->li_los);
206 lfsck->li_los = NULL;
209 if (lfsck->li_local_root != NULL) {
210 lu_object_put(env, &lfsck->li_local_root->do_lu);
211 lfsck->li_local_root = NULL;
217 static inline void lfsck_instance_get(struct lfsck_instance *lfsck)
219 atomic_inc(&lfsck->li_ref);
222 static inline void lfsck_instance_put(const struct lu_env *env,
223 struct lfsck_instance *lfsck)
225 if (atomic_dec_and_test(&lfsck->li_ref))
226 lfsck_instance_cleanup(env, lfsck);
229 static inline struct lfsck_instance *lfsck_instance_find(struct dt_device *key,
230 bool ref, bool unlink)
232 struct lfsck_instance *lfsck;
234 spin_lock(&lfsck_instance_lock);
235 cfs_list_for_each_entry(lfsck, &lfsck_instance_list, li_link) {
236 if (lfsck->li_bottom == key) {
238 lfsck_instance_get(lfsck);
240 list_del_init(&lfsck->li_link);
241 spin_unlock(&lfsck_instance_lock);
245 spin_unlock(&lfsck_instance_lock);
249 static inline int lfsck_instance_add(struct lfsck_instance *lfsck)
251 struct lfsck_instance *tmp;
253 spin_lock(&lfsck_instance_lock);
254 cfs_list_for_each_entry(tmp, &lfsck_instance_list, li_link) {
255 if (lfsck->li_bottom == tmp->li_bottom) {
256 spin_unlock(&lfsck_instance_lock);
261 cfs_list_add_tail(&lfsck->li_link, &lfsck_instance_list);
262 spin_unlock(&lfsck_instance_lock);
266 int lfsck_bits_dump(char **buf, int *len, int bits, const char *names[],
274 rc = snprintf(*buf, *len, "%s:%c", prefix, bits != 0 ? ' ' : '\n');
280 for (i = 0, flag = 1; bits != 0; i++, flag = 1 << i) {
283 rc = snprintf(*buf, *len, "%s%c", names[i],
284 bits != 0 ? ',' : '\n');
295 int lfsck_time_dump(char **buf, int *len, __u64 time, const char *prefix)
300 rc = snprintf(*buf, *len, "%s: "LPU64" seconds\n", prefix,
301 cfs_time_current_sec() - time);
303 rc = snprintf(*buf, *len, "%s: N/A\n", prefix);
312 int lfsck_pos_dump(char **buf, int *len, struct lfsck_position *pos,
317 if (fid_is_zero(&pos->lp_dir_parent)) {
318 if (pos->lp_oit_cookie == 0)
319 rc = snprintf(*buf, *len, "%s: N/A, N/A, N/A\n",
322 rc = snprintf(*buf, *len, "%s: "LPU64", N/A, N/A\n",
323 prefix, pos->lp_oit_cookie);
325 rc = snprintf(*buf, *len, "%s: "LPU64", "DFID", "LPU64"\n",
326 prefix, pos->lp_oit_cookie,
327 PFID(&pos->lp_dir_parent), pos->lp_dir_cookie);
337 void lfsck_pos_fill(const struct lu_env *env, struct lfsck_instance *lfsck,
338 struct lfsck_position *pos, bool init)
340 const struct dt_it_ops *iops = &lfsck->li_obj_oit->do_index_ops->dio_it;
342 if (unlikely(lfsck->li_di_oit == NULL)) {
343 memset(pos, 0, sizeof(*pos));
347 pos->lp_oit_cookie = iops->store(env, lfsck->li_di_oit);
348 if (!lfsck->li_current_oit_processed && !init)
349 pos->lp_oit_cookie--;
351 LASSERT(pos->lp_oit_cookie > 0);
353 if (lfsck->li_di_dir != NULL) {
354 struct dt_object *dto = lfsck->li_obj_dir;
356 pos->lp_dir_cookie = dto->do_index_ops->dio_it.store(env,
359 if (pos->lp_dir_cookie >= MDS_DIR_END_OFF) {
360 fid_zero(&pos->lp_dir_parent);
361 pos->lp_dir_cookie = 0;
363 pos->lp_dir_parent = *lu_object_fid(&dto->do_lu);
366 fid_zero(&pos->lp_dir_parent);
367 pos->lp_dir_cookie = 0;
371 static void __lfsck_set_speed(struct lfsck_instance *lfsck, __u32 limit)
373 lfsck->li_bookmark_ram.lb_speed_limit = limit;
374 if (limit != LFSCK_SPEED_NO_LIMIT) {
375 if (limit > CFS_HZ) {
376 lfsck->li_sleep_rate = limit / CFS_HZ;
377 lfsck->li_sleep_jif = 1;
379 lfsck->li_sleep_rate = 1;
380 lfsck->li_sleep_jif = CFS_HZ / limit;
383 lfsck->li_sleep_jif = 0;
384 lfsck->li_sleep_rate = 0;
388 void lfsck_control_speed(struct lfsck_instance *lfsck)
390 struct ptlrpc_thread *thread = &lfsck->li_thread;
391 struct l_wait_info lwi;
393 if (lfsck->li_sleep_jif > 0 &&
394 lfsck->li_new_scanned >= lfsck->li_sleep_rate) {
395 spin_lock(&lfsck->li_lock);
396 if (likely(lfsck->li_sleep_jif > 0 &&
397 lfsck->li_new_scanned >= lfsck->li_sleep_rate)) {
398 lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL,
399 LWI_ON_SIGNAL_NOOP, NULL);
400 spin_unlock(&lfsck->li_lock);
402 l_wait_event(thread->t_ctl_waitq,
403 !thread_is_running(thread),
405 lfsck->li_new_scanned = 0;
407 spin_unlock(&lfsck->li_lock);
412 static int lfsck_parent_fid(const struct lu_env *env, struct dt_object *obj,
415 if (unlikely(!S_ISDIR(lfsck_object_type(obj)) ||
416 !dt_try_as_dir(env, obj)))
419 return dt_lookup(env, obj, (struct dt_rec *)fid,
420 (const struct dt_key *)"..", BYPASS_CAPA);
423 static int lfsck_needs_scan_dir(const struct lu_env *env,
424 struct lfsck_instance *lfsck,
425 struct dt_object *obj)
427 struct lu_fid *fid = &lfsck_env_info(env)->lti_fid;
431 if (!lfsck->li_master || !S_ISDIR(lfsck_object_type(obj)) ||
432 cfs_list_empty(&lfsck->li_list_dir))
436 /* XXX: Currently, we do not scan the "/REMOTE_PARENT_DIR",
437 * which is the agent directory to manage the objects
438 * which name entries reside on remote MDTs. Related
439 * consistency verification will be processed in LFSCK
441 if (lu_fid_eq(lfsck_dto2fid(obj), &lfsck->li_global_root_fid)) {
443 lfsck_object_put(env, obj);
447 /* .lustre doesn't contain "real" user objects, no need lfsck */
448 if (fid_is_dot_lustre(lfsck_dto2fid(obj))) {
450 lfsck_object_put(env, obj);
454 dt_read_lock(env, obj, MOR_TGT_CHILD);
455 if (unlikely(lfsck_is_dead_obj(obj))) {
456 dt_read_unlock(env, obj);
458 lfsck_object_put(env, obj);
462 rc = dt_xattr_get(env, obj,
463 lfsck_buf_get(env, NULL, 0), XATTR_NAME_LINK,
465 dt_read_unlock(env, obj);
468 lfsck_object_put(env, obj);
472 if (rc < 0 && rc != -ENODATA) {
474 lfsck_object_put(env, obj);
478 rc = lfsck_parent_fid(env, obj, fid);
480 lfsck_object_put(env, obj);
484 if (unlikely(lu_fid_eq(fid,
485 lfsck_dto2fid(lfsck->li_local_root))))
488 obj = lfsck_object_find(env, lfsck, fid);
491 else if (IS_ERR(obj))
494 if (!dt_object_exists(obj)) {
495 lfsck_object_put(env, obj);
499 /* Currently, only client visible directory can be remote. */
500 if (dt_object_remote(obj)) {
501 lfsck_object_put(env, obj);
510 /* LFSCK wrap functions */
512 void lfsck_fail(const struct lu_env *env, struct lfsck_instance *lfsck,
515 struct lfsck_component *com;
517 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
518 com->lc_ops->lfsck_fail(env, com, new_checked);
522 int lfsck_checkpoint(const struct lu_env *env, struct lfsck_instance *lfsck)
524 struct lfsck_component *com;
527 if (likely(cfs_time_beforeq(cfs_time_current(),
528 lfsck->li_time_next_checkpoint)))
531 lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, false);
532 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
533 rc = com->lc_ops->lfsck_checkpoint(env, com, false);
538 lfsck->li_time_last_checkpoint = cfs_time_current();
539 lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
540 cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
544 int lfsck_prep(const struct lu_env *env, struct lfsck_instance *lfsck)
546 struct dt_object *obj = NULL;
547 struct lfsck_component *com;
548 struct lfsck_component *next;
549 struct lfsck_position *pos = NULL;
550 const struct dt_it_ops *iops =
551 &lfsck->li_obj_oit->do_index_ops->dio_it;
556 LASSERT(lfsck->li_obj_dir == NULL);
557 LASSERT(lfsck->li_di_dir == NULL);
559 lfsck->li_current_oit_processed = 0;
560 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan, lc_link) {
561 com->lc_new_checked = 0;
562 if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN)
565 rc = com->lc_ops->lfsck_prep(env, com);
570 (!lfsck_pos_is_zero(&com->lc_pos_start) &&
571 lfsck_pos_is_eq(pos, &com->lc_pos_start) > 0))
572 pos = &com->lc_pos_start;
575 /* Init otable-based iterator. */
577 rc = iops->load(env, lfsck->li_di_oit, 0);
579 lfsck->li_oit_over = 1;
586 rc = iops->load(env, lfsck->li_di_oit, pos->lp_oit_cookie);
590 lfsck->li_oit_over = 1;
592 if (!lfsck->li_master || fid_is_zero(&pos->lp_dir_parent))
595 /* Find the directory for namespace-based traverse. */
596 obj = lfsck_object_find(env, lfsck, &pos->lp_dir_parent);
599 else if (IS_ERR(obj))
600 RETURN(PTR_ERR(obj));
602 /* XXX: Currently, skip remote object, the consistency for
603 * remote object will be processed in LFSCK phase III. */
604 if (!dt_object_exists(obj) || dt_object_remote(obj) ||
605 unlikely(!S_ISDIR(lfsck_object_type(obj))))
608 if (unlikely(!dt_try_as_dir(env, obj)))
609 GOTO(out, rc = -ENOTDIR);
611 /* Init the namespace-based directory traverse. */
612 iops = &obj->do_index_ops->dio_it;
613 di = iops->init(env, obj, lfsck->li_args_dir, BYPASS_CAPA);
615 GOTO(out, rc = PTR_ERR(di));
617 LASSERT(pos->lp_dir_cookie < MDS_DIR_END_OFF);
619 rc = iops->load(env, di, pos->lp_dir_cookie);
620 if ((rc == 0) || (rc > 0 && pos->lp_dir_cookie > 0))
621 rc = iops->next(env, di);
631 lfsck->li_obj_dir = lfsck_object_get(obj);
632 lfsck->li_cookie_dir = iops->store(env, di);
633 spin_lock(&lfsck->li_lock);
634 lfsck->li_di_dir = di;
635 spin_unlock(&lfsck->li_lock);
641 lfsck_object_put(env, obj);
644 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan,
646 com->lc_ops->lfsck_post(env, com, rc, true);
652 lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, true);
653 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
654 rc = com->lc_ops->lfsck_checkpoint(env, com, true);
659 lfsck->li_time_last_checkpoint = cfs_time_current();
660 lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
661 cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
665 int lfsck_exec_oit(const struct lu_env *env, struct lfsck_instance *lfsck,
666 struct dt_object *obj)
668 struct lfsck_component *com;
669 const struct dt_it_ops *iops;
674 LASSERT(lfsck->li_obj_dir == NULL);
676 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
677 rc = com->lc_ops->lfsck_exec_oit(env, com, obj);
682 rc = lfsck_needs_scan_dir(env, lfsck, obj);
686 if (unlikely(!dt_try_as_dir(env, obj)))
687 GOTO(out, rc = -ENOTDIR);
689 iops = &obj->do_index_ops->dio_it;
690 di = iops->init(env, obj, lfsck->li_args_dir, BYPASS_CAPA);
692 GOTO(out, rc = PTR_ERR(di));
694 rc = iops->load(env, di, 0);
696 rc = iops->next(env, di);
706 lfsck->li_obj_dir = lfsck_object_get(obj);
707 lfsck->li_cookie_dir = iops->store(env, di);
708 spin_lock(&lfsck->li_lock);
709 lfsck->li_di_dir = di;
710 spin_unlock(&lfsck->li_lock);
716 lfsck_fail(env, lfsck, false);
717 return (rc > 0 ? 0 : rc);
720 int lfsck_exec_dir(const struct lu_env *env, struct lfsck_instance *lfsck,
721 struct dt_object *obj, struct lu_dirent *ent)
723 struct lfsck_component *com;
726 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
727 rc = com->lc_ops->lfsck_exec_dir(env, com, obj, ent);
734 int lfsck_post(const struct lu_env *env, struct lfsck_instance *lfsck,
737 struct lfsck_component *com;
738 struct lfsck_component *next;
741 lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, false);
742 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan, lc_link) {
743 rc = com->lc_ops->lfsck_post(env, com, result, false);
748 lfsck->li_time_last_checkpoint = cfs_time_current();
749 lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
750 cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
754 int lfsck_double_scan(const struct lu_env *env, struct lfsck_instance *lfsck)
756 struct lfsck_component *com;
757 struct lfsck_component *next;
760 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_double_scan,
762 if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN)
765 rc = com->lc_ops->lfsck_double_scan(env, com);
772 /* external interfaces */
774 int lfsck_get_speed(struct dt_device *key, void *buf, int len)
777 struct lfsck_instance *lfsck;
781 lfsck = lfsck_instance_find(key, true, false);
782 if (unlikely(lfsck == NULL))
785 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
789 rc = snprintf(buf, len, "%u\n", lfsck->li_bookmark_ram.lb_speed_limit);
795 lfsck_instance_put(&env, lfsck);
798 EXPORT_SYMBOL(lfsck_get_speed);
800 int lfsck_set_speed(struct dt_device *key, int val)
803 struct lfsck_instance *lfsck;
807 lfsck = lfsck_instance_find(key, true, false);
808 if (unlikely(lfsck == NULL))
811 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
815 mutex_lock(&lfsck->li_mutex);
816 __lfsck_set_speed(lfsck, val);
817 rc = lfsck_bookmark_store(&env, lfsck);
818 mutex_unlock(&lfsck->li_mutex);
824 lfsck_instance_put(&env, lfsck);
827 EXPORT_SYMBOL(lfsck_set_speed);
829 int lfsck_dump(struct dt_device *key, void *buf, int len, __u16 type)
832 struct lfsck_instance *lfsck;
833 struct lfsck_component *com = NULL;
837 lfsck = lfsck_instance_find(key, true, false);
838 if (unlikely(lfsck == NULL))
841 com = lfsck_component_find(lfsck, type);
843 GOTO(out, rc = -ENOTSUPP);
845 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
849 rc = com->lc_ops->lfsck_dump(&env, com, buf, len);
856 lfsck_component_put(&env, com);
857 lfsck_instance_put(&env, lfsck);
860 EXPORT_SYMBOL(lfsck_dump);
862 int lfsck_start(const struct lu_env *env, struct dt_device *key,
863 struct lfsck_start_param *lsp)
865 struct lfsck_start *start = lsp->lsp_start;
866 struct lfsck_instance *lfsck;
867 struct lfsck_bookmark *bk;
868 struct ptlrpc_thread *thread;
869 struct lfsck_component *com;
870 struct l_wait_info lwi = { 0 };
877 lfsck = lfsck_instance_find(key, true, false);
878 if (unlikely(lfsck == NULL))
881 /* start == NULL means auto trigger paused LFSCK. */
882 if ((start == NULL) &&
883 (cfs_list_empty(&lfsck->li_list_scan) ||
884 OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_AUTO)))
887 bk = &lfsck->li_bookmark_ram;
888 thread = &lfsck->li_thread;
889 mutex_lock(&lfsck->li_mutex);
890 spin_lock(&lfsck->li_lock);
891 if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
892 spin_unlock(&lfsck->li_lock);
893 GOTO(out, rc = -EALREADY);
896 spin_unlock(&lfsck->li_lock);
898 lfsck->li_namespace = lsp->lsp_namespace;
899 lfsck->li_paused = 0;
900 lfsck->li_oit_over = 0;
901 lfsck->li_drop_dryrun = 0;
902 lfsck->li_new_scanned = 0;
904 /* For auto trigger. */
908 start->ls_version = bk->lb_version;
909 if (start->ls_valid & LSV_SPEED_LIMIT) {
910 __lfsck_set_speed(lfsck, start->ls_speed_limit);
914 if (start->ls_valid & LSV_ERROR_HANDLE) {
915 valid |= DOIV_ERROR_HANDLE;
916 if (start->ls_flags & LPF_FAILOUT)
917 flags |= DOIF_FAILOUT;
919 if ((start->ls_flags & LPF_FAILOUT) &&
920 !(bk->lb_param & LPF_FAILOUT)) {
921 bk->lb_param |= LPF_FAILOUT;
923 } else if (!(start->ls_flags & LPF_FAILOUT) &&
924 (bk->lb_param & LPF_FAILOUT)) {
925 bk->lb_param &= ~LPF_FAILOUT;
930 if (start->ls_valid & LSV_DRYRUN) {
931 if ((start->ls_flags & LPF_DRYRUN) &&
932 !(bk->lb_param & LPF_DRYRUN)) {
933 bk->lb_param |= LPF_DRYRUN;
935 } else if (!(start->ls_flags & LPF_DRYRUN) &&
936 (bk->lb_param & LPF_DRYRUN)) {
937 bk->lb_param &= ~LPF_DRYRUN;
938 lfsck->li_drop_dryrun = 1;
944 rc = lfsck_bookmark_store(env, lfsck);
949 if (start->ls_flags & LPF_RESET)
952 if (start->ls_active != 0) {
953 struct lfsck_component *next;
956 if (start->ls_active == LFSCK_TYPES_ALL)
957 start->ls_active = LFSCK_TYPES_SUPPORTED;
959 if (start->ls_active & ~LFSCK_TYPES_SUPPORTED) {
960 start->ls_active &= ~LFSCK_TYPES_SUPPORTED;
961 GOTO(out, rc = -ENOTSUPP);
964 cfs_list_for_each_entry_safe(com, next,
965 &lfsck->li_list_scan, lc_link) {
966 if (!(com->lc_type & start->ls_active)) {
967 rc = com->lc_ops->lfsck_post(env, com, 0,
974 while (start->ls_active != 0) {
975 if (type & start->ls_active) {
976 com = __lfsck_component_find(lfsck, type,
977 &lfsck->li_list_idle);
979 /* The component status will be updated
980 * when its prep() is called later by
981 * the LFSCK main engine. */
982 cfs_list_del_init(&com->lc_link);
983 cfs_list_add_tail(&com->lc_link,
984 &lfsck->li_list_scan);
986 start->ls_active &= ~type;
992 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
993 start->ls_active |= com->lc_type;
994 if (flags & DOIF_RESET) {
995 rc = com->lc_ops->lfsck_reset(env, com, false);
1002 lfsck->li_args_dir = LUDA_64BITHASH | LUDA_VERIFY;
1003 if (bk->lb_param & LPF_DRYRUN)
1004 lfsck->li_args_dir |= LUDA_VERIFY_DRYRUN;
1006 if (bk->lb_param & LPF_FAILOUT) {
1007 valid |= DOIV_ERROR_HANDLE;
1008 flags |= DOIF_FAILOUT;
1011 if (!cfs_list_empty(&lfsck->li_list_scan))
1012 flags |= DOIF_OUTUSED;
1014 lfsck->li_args_oit = (flags << DT_OTABLE_IT_FLAGS_SHIFT) | valid;
1015 thread_set_flags(thread, 0);
1016 rc = PTR_ERR(kthread_run(lfsck_master_engine, lfsck, "lfsck"));
1017 if (IS_ERR_VALUE(rc)) {
1018 CERROR("%s: cannot start LFSCK thread, rc = %ld\n",
1019 lfsck_lfsck2name(lfsck), rc);
1022 l_wait_event(thread->t_ctl_waitq,
1023 thread_is_running(thread) ||
1024 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);