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_nocache(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_nocache(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_nocache(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;
212 static inline void lfsck_instance_get(struct lfsck_instance *lfsck)
214 atomic_inc(&lfsck->li_ref);
217 static inline void lfsck_instance_put(const struct lu_env *env,
218 struct lfsck_instance *lfsck)
220 if (atomic_dec_and_test(&lfsck->li_ref))
221 lfsck_instance_cleanup(env, lfsck);
224 static inline struct lfsck_instance *lfsck_instance_find(struct dt_device *key,
225 bool ref, bool unlink)
227 struct lfsck_instance *lfsck;
229 spin_lock(&lfsck_instance_lock);
230 cfs_list_for_each_entry(lfsck, &lfsck_instance_list, li_link) {
231 if (lfsck->li_bottom == key) {
233 lfsck_instance_get(lfsck);
235 list_del_init(&lfsck->li_link);
236 spin_unlock(&lfsck_instance_lock);
240 spin_unlock(&lfsck_instance_lock);
244 static inline int lfsck_instance_add(struct lfsck_instance *lfsck)
246 struct lfsck_instance *tmp;
248 spin_lock(&lfsck_instance_lock);
249 cfs_list_for_each_entry(tmp, &lfsck_instance_list, li_link) {
250 if (lfsck->li_bottom == tmp->li_bottom) {
251 spin_unlock(&lfsck_instance_lock);
256 cfs_list_add_tail(&lfsck->li_link, &lfsck_instance_list);
257 spin_unlock(&lfsck_instance_lock);
261 int lfsck_bits_dump(char **buf, int *len, int bits, const char *names[],
269 rc = snprintf(*buf, *len, "%s:%c", prefix, bits != 0 ? ' ' : '\n');
275 for (i = 0, flag = 1; bits != 0; i++, flag = 1 << i) {
278 rc = snprintf(*buf, *len, "%s%c", names[i],
279 bits != 0 ? ',' : '\n');
290 int lfsck_time_dump(char **buf, int *len, __u64 time, const char *prefix)
295 rc = snprintf(*buf, *len, "%s: "LPU64" seconds\n", prefix,
296 cfs_time_current_sec() - time);
298 rc = snprintf(*buf, *len, "%s: N/A\n", prefix);
307 int lfsck_pos_dump(char **buf, int *len, struct lfsck_position *pos,
312 if (fid_is_zero(&pos->lp_dir_parent)) {
313 if (pos->lp_oit_cookie == 0)
314 rc = snprintf(*buf, *len, "%s: N/A, N/A, N/A\n",
317 rc = snprintf(*buf, *len, "%s: "LPU64", N/A, N/A\n",
318 prefix, pos->lp_oit_cookie);
320 rc = snprintf(*buf, *len, "%s: "LPU64", "DFID", "LPU64"\n",
321 prefix, pos->lp_oit_cookie,
322 PFID(&pos->lp_dir_parent), pos->lp_dir_cookie);
332 void lfsck_pos_fill(const struct lu_env *env, struct lfsck_instance *lfsck,
333 struct lfsck_position *pos, bool init)
335 const struct dt_it_ops *iops = &lfsck->li_obj_oit->do_index_ops->dio_it;
337 if (unlikely(lfsck->li_di_oit == NULL)) {
338 memset(pos, 0, sizeof(*pos));
342 pos->lp_oit_cookie = iops->store(env, lfsck->li_di_oit);
343 if (!lfsck->li_current_oit_processed && !init)
344 pos->lp_oit_cookie--;
346 LASSERT(pos->lp_oit_cookie > 0);
348 if (lfsck->li_di_dir != NULL) {
349 struct dt_object *dto = lfsck->li_obj_dir;
351 pos->lp_dir_cookie = dto->do_index_ops->dio_it.store(env,
354 if (pos->lp_dir_cookie >= MDS_DIR_END_OFF) {
355 fid_zero(&pos->lp_dir_parent);
356 pos->lp_dir_cookie = 0;
358 pos->lp_dir_parent = *lu_object_fid(&dto->do_lu);
361 fid_zero(&pos->lp_dir_parent);
362 pos->lp_dir_cookie = 0;
366 static void __lfsck_set_speed(struct lfsck_instance *lfsck, __u32 limit)
368 lfsck->li_bookmark_ram.lb_speed_limit = limit;
369 if (limit != LFSCK_SPEED_NO_LIMIT) {
371 lfsck->li_sleep_rate = limit / HZ;
372 lfsck->li_sleep_jif = 1;
374 lfsck->li_sleep_rate = 1;
375 lfsck->li_sleep_jif = HZ / limit;
378 lfsck->li_sleep_jif = 0;
379 lfsck->li_sleep_rate = 0;
383 void lfsck_control_speed(struct lfsck_instance *lfsck)
385 struct ptlrpc_thread *thread = &lfsck->li_thread;
386 struct l_wait_info lwi;
388 if (lfsck->li_sleep_jif > 0 &&
389 lfsck->li_new_scanned >= lfsck->li_sleep_rate) {
390 spin_lock(&lfsck->li_lock);
391 if (likely(lfsck->li_sleep_jif > 0 &&
392 lfsck->li_new_scanned >= lfsck->li_sleep_rate)) {
393 lwi = LWI_TIMEOUT_INTR(lfsck->li_sleep_jif, NULL,
394 LWI_ON_SIGNAL_NOOP, NULL);
395 spin_unlock(&lfsck->li_lock);
397 l_wait_event(thread->t_ctl_waitq,
398 !thread_is_running(thread),
400 lfsck->li_new_scanned = 0;
402 spin_unlock(&lfsck->li_lock);
407 static int lfsck_parent_fid(const struct lu_env *env, struct dt_object *obj,
410 if (unlikely(!S_ISDIR(lfsck_object_type(obj)) ||
411 !dt_try_as_dir(env, obj)))
414 return dt_lookup(env, obj, (struct dt_rec *)fid,
415 (const struct dt_key *)"..", BYPASS_CAPA);
418 static int lfsck_needs_scan_dir(const struct lu_env *env,
419 struct lfsck_instance *lfsck,
420 struct dt_object *obj)
422 struct lu_fid *fid = &lfsck_env_info(env)->lti_fid;
426 if (!lfsck->li_master || !S_ISDIR(lfsck_object_type(obj)) ||
427 cfs_list_empty(&lfsck->li_list_dir))
431 /* XXX: Currently, we do not scan the "/REMOTE_PARENT_DIR",
432 * which is the agent directory to manage the objects
433 * which name entries reside on remote MDTs. Related
434 * consistency verification will be processed in LFSCK
436 if (lu_fid_eq(lfsck_dto2fid(obj), &lfsck->li_global_root_fid)) {
438 lfsck_object_put(env, obj);
442 /* .lustre doesn't contain "real" user objects, no need lfsck */
443 if (fid_is_dot_lustre(lfsck_dto2fid(obj))) {
445 lfsck_object_put(env, obj);
449 dt_read_lock(env, obj, MOR_TGT_CHILD);
450 if (unlikely(lfsck_is_dead_obj(obj))) {
451 dt_read_unlock(env, obj);
453 lfsck_object_put(env, obj);
457 rc = dt_xattr_get(env, obj,
458 lfsck_buf_get(env, NULL, 0), XATTR_NAME_LINK,
460 dt_read_unlock(env, obj);
463 lfsck_object_put(env, obj);
467 if (rc < 0 && rc != -ENODATA) {
469 lfsck_object_put(env, obj);
473 rc = lfsck_parent_fid(env, obj, fid);
475 lfsck_object_put(env, obj);
479 if (unlikely(lu_fid_eq(fid, &lfsck->li_local_root_fid)))
482 obj = lfsck_object_find(env, lfsck, fid);
485 else if (IS_ERR(obj))
488 if (!dt_object_exists(obj)) {
489 lfsck_object_put(env, obj);
493 /* Currently, only client visible directory can be remote. */
494 if (dt_object_remote(obj)) {
495 lfsck_object_put(env, obj);
504 /* LFSCK wrap functions */
506 void lfsck_fail(const struct lu_env *env, struct lfsck_instance *lfsck,
509 struct lfsck_component *com;
511 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
512 com->lc_ops->lfsck_fail(env, com, new_checked);
516 int lfsck_checkpoint(const struct lu_env *env, struct lfsck_instance *lfsck)
518 struct lfsck_component *com;
521 if (likely(cfs_time_beforeq(cfs_time_current(),
522 lfsck->li_time_next_checkpoint)))
525 lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, false);
526 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
527 rc = com->lc_ops->lfsck_checkpoint(env, com, false);
532 lfsck->li_time_last_checkpoint = cfs_time_current();
533 lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
534 cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
538 int lfsck_prep(const struct lu_env *env, struct lfsck_instance *lfsck)
540 struct dt_object *obj = NULL;
541 struct lfsck_component *com;
542 struct lfsck_component *next;
543 struct lfsck_position *pos = NULL;
544 const struct dt_it_ops *iops =
545 &lfsck->li_obj_oit->do_index_ops->dio_it;
550 LASSERT(lfsck->li_obj_dir == NULL);
551 LASSERT(lfsck->li_di_dir == NULL);
553 lfsck->li_current_oit_processed = 0;
554 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan, lc_link) {
555 com->lc_new_checked = 0;
556 if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN)
559 rc = com->lc_ops->lfsck_prep(env, com);
564 (!lfsck_pos_is_zero(&com->lc_pos_start) &&
565 lfsck_pos_is_eq(pos, &com->lc_pos_start) > 0))
566 pos = &com->lc_pos_start;
569 /* Init otable-based iterator. */
571 rc = iops->load(env, lfsck->li_di_oit, 0);
573 lfsck->li_oit_over = 1;
580 rc = iops->load(env, lfsck->li_di_oit, pos->lp_oit_cookie);
584 lfsck->li_oit_over = 1;
586 if (!lfsck->li_master || fid_is_zero(&pos->lp_dir_parent))
589 /* Find the directory for namespace-based traverse. */
590 obj = lfsck_object_find(env, lfsck, &pos->lp_dir_parent);
593 else if (IS_ERR(obj))
594 RETURN(PTR_ERR(obj));
596 /* XXX: Currently, skip remote object, the consistency for
597 * remote object will be processed in LFSCK phase III. */
598 if (!dt_object_exists(obj) || dt_object_remote(obj) ||
599 unlikely(!S_ISDIR(lfsck_object_type(obj))))
602 if (unlikely(!dt_try_as_dir(env, obj)))
603 GOTO(out, rc = -ENOTDIR);
605 /* Init the namespace-based directory traverse. */
606 iops = &obj->do_index_ops->dio_it;
607 di = iops->init(env, obj, lfsck->li_args_dir, BYPASS_CAPA);
609 GOTO(out, rc = PTR_ERR(di));
611 LASSERT(pos->lp_dir_cookie < MDS_DIR_END_OFF);
613 rc = iops->load(env, di, pos->lp_dir_cookie);
614 if ((rc == 0) || (rc > 0 && pos->lp_dir_cookie > 0))
615 rc = iops->next(env, di);
625 lfsck->li_obj_dir = lfsck_object_get(obj);
626 lfsck->li_cookie_dir = iops->store(env, di);
627 spin_lock(&lfsck->li_lock);
628 lfsck->li_di_dir = di;
629 spin_unlock(&lfsck->li_lock);
635 lfsck_object_put(env, obj);
638 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan,
640 com->lc_ops->lfsck_post(env, com, rc, true);
646 lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, true);
647 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
648 rc = com->lc_ops->lfsck_checkpoint(env, com, true);
653 lfsck->li_time_last_checkpoint = cfs_time_current();
654 lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
655 cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
659 int lfsck_exec_oit(const struct lu_env *env, struct lfsck_instance *lfsck,
660 struct dt_object *obj)
662 struct lfsck_component *com;
663 const struct dt_it_ops *iops;
668 LASSERT(lfsck->li_obj_dir == NULL);
670 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
671 rc = com->lc_ops->lfsck_exec_oit(env, com, obj);
676 rc = lfsck_needs_scan_dir(env, lfsck, obj);
680 if (unlikely(!dt_try_as_dir(env, obj)))
681 GOTO(out, rc = -ENOTDIR);
683 iops = &obj->do_index_ops->dio_it;
684 di = iops->init(env, obj, lfsck->li_args_dir, BYPASS_CAPA);
686 GOTO(out, rc = PTR_ERR(di));
688 rc = iops->load(env, di, 0);
690 rc = iops->next(env, di);
700 lfsck->li_obj_dir = lfsck_object_get(obj);
701 lfsck->li_cookie_dir = iops->store(env, di);
702 spin_lock(&lfsck->li_lock);
703 lfsck->li_di_dir = di;
704 spin_unlock(&lfsck->li_lock);
710 lfsck_fail(env, lfsck, false);
711 return (rc > 0 ? 0 : rc);
714 int lfsck_exec_dir(const struct lu_env *env, struct lfsck_instance *lfsck,
715 struct dt_object *obj, struct lu_dirent *ent)
717 struct lfsck_component *com;
720 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
721 rc = com->lc_ops->lfsck_exec_dir(env, com, obj, ent);
728 int lfsck_post(const struct lu_env *env, struct lfsck_instance *lfsck,
731 struct lfsck_component *com;
732 struct lfsck_component *next;
735 lfsck_pos_fill(env, lfsck, &lfsck->li_pos_current, false);
736 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_scan, lc_link) {
737 rc = com->lc_ops->lfsck_post(env, com, result, false);
742 lfsck->li_time_last_checkpoint = cfs_time_current();
743 lfsck->li_time_next_checkpoint = lfsck->li_time_last_checkpoint +
744 cfs_time_seconds(LFSCK_CHECKPOINT_INTERVAL);
748 int lfsck_double_scan(const struct lu_env *env, struct lfsck_instance *lfsck)
750 struct lfsck_component *com;
751 struct lfsck_component *next;
754 cfs_list_for_each_entry_safe(com, next, &lfsck->li_list_double_scan,
756 if (lfsck->li_bookmark_ram.lb_param & LPF_DRYRUN)
759 rc = com->lc_ops->lfsck_double_scan(env, com);
766 /* external interfaces */
768 int lfsck_get_speed(struct dt_device *key, void *buf, int len)
771 struct lfsck_instance *lfsck;
775 lfsck = lfsck_instance_find(key, true, false);
776 if (unlikely(lfsck == NULL))
779 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
783 rc = snprintf(buf, len, "%u\n", lfsck->li_bookmark_ram.lb_speed_limit);
789 lfsck_instance_put(&env, lfsck);
792 EXPORT_SYMBOL(lfsck_get_speed);
794 int lfsck_set_speed(struct dt_device *key, int val)
797 struct lfsck_instance *lfsck;
801 lfsck = lfsck_instance_find(key, true, false);
802 if (unlikely(lfsck == NULL))
805 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
809 mutex_lock(&lfsck->li_mutex);
810 __lfsck_set_speed(lfsck, val);
811 rc = lfsck_bookmark_store(&env, lfsck);
812 mutex_unlock(&lfsck->li_mutex);
818 lfsck_instance_put(&env, lfsck);
821 EXPORT_SYMBOL(lfsck_set_speed);
823 int lfsck_dump(struct dt_device *key, void *buf, int len, __u16 type)
826 struct lfsck_instance *lfsck;
827 struct lfsck_component *com = NULL;
831 lfsck = lfsck_instance_find(key, true, false);
832 if (unlikely(lfsck == NULL))
835 com = lfsck_component_find(lfsck, type);
837 GOTO(out, rc = -ENOTSUPP);
839 rc = lu_env_init(&env, LCT_MD_THREAD | LCT_DT_THREAD);
843 rc = com->lc_ops->lfsck_dump(&env, com, buf, len);
850 lfsck_component_put(&env, com);
851 lfsck_instance_put(&env, lfsck);
854 EXPORT_SYMBOL(lfsck_dump);
856 int lfsck_start(const struct lu_env *env, struct dt_device *key,
857 struct lfsck_start_param *lsp)
859 struct lfsck_start *start = lsp->lsp_start;
860 struct lfsck_instance *lfsck;
861 struct lfsck_bookmark *bk;
862 struct ptlrpc_thread *thread;
863 struct lfsck_component *com;
864 struct l_wait_info lwi = { 0 };
871 lfsck = lfsck_instance_find(key, true, false);
872 if (unlikely(lfsck == NULL))
875 /* start == NULL means auto trigger paused LFSCK. */
876 if ((start == NULL) &&
877 (cfs_list_empty(&lfsck->li_list_scan) ||
878 OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_AUTO)))
881 bk = &lfsck->li_bookmark_ram;
882 thread = &lfsck->li_thread;
883 mutex_lock(&lfsck->li_mutex);
884 spin_lock(&lfsck->li_lock);
885 if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
886 spin_unlock(&lfsck->li_lock);
887 GOTO(out, rc = -EALREADY);
890 spin_unlock(&lfsck->li_lock);
892 lfsck->li_namespace = lsp->lsp_namespace;
893 lfsck->li_paused = 0;
894 lfsck->li_oit_over = 0;
895 lfsck->li_drop_dryrun = 0;
896 lfsck->li_new_scanned = 0;
898 /* For auto trigger. */
902 start->ls_version = bk->lb_version;
903 if (start->ls_valid & LSV_SPEED_LIMIT) {
904 __lfsck_set_speed(lfsck, start->ls_speed_limit);
908 if (start->ls_valid & LSV_ERROR_HANDLE) {
909 valid |= DOIV_ERROR_HANDLE;
910 if (start->ls_flags & LPF_FAILOUT)
911 flags |= DOIF_FAILOUT;
913 if ((start->ls_flags & LPF_FAILOUT) &&
914 !(bk->lb_param & LPF_FAILOUT)) {
915 bk->lb_param |= LPF_FAILOUT;
917 } else if (!(start->ls_flags & LPF_FAILOUT) &&
918 (bk->lb_param & LPF_FAILOUT)) {
919 bk->lb_param &= ~LPF_FAILOUT;
924 if (start->ls_valid & LSV_DRYRUN) {
925 valid |= DOIV_DRYRUN;
926 if (start->ls_flags & LPF_DRYRUN)
927 flags |= DOIF_DRYRUN;
929 if ((start->ls_flags & LPF_DRYRUN) &&
930 !(bk->lb_param & LPF_DRYRUN)) {
931 bk->lb_param |= LPF_DRYRUN;
933 } else if (!(start->ls_flags & LPF_DRYRUN) &&
934 (bk->lb_param & LPF_DRYRUN)) {
935 bk->lb_param &= ~LPF_DRYRUN;
936 lfsck->li_drop_dryrun = 1;
942 rc = lfsck_bookmark_store(env, lfsck);
947 if (start->ls_flags & LPF_RESET)
950 if (start->ls_active != 0) {
951 struct lfsck_component *next;
954 if (start->ls_active == LFSCK_TYPES_ALL)
955 start->ls_active = LFSCK_TYPES_SUPPORTED;
957 if (start->ls_active & ~LFSCK_TYPES_SUPPORTED) {
958 start->ls_active &= ~LFSCK_TYPES_SUPPORTED;
959 GOTO(out, rc = -ENOTSUPP);
962 cfs_list_for_each_entry_safe(com, next,
963 &lfsck->li_list_scan, lc_link) {
964 if (!(com->lc_type & start->ls_active)) {
965 rc = com->lc_ops->lfsck_post(env, com, 0,
972 while (start->ls_active != 0) {
973 if (type & start->ls_active) {
974 com = __lfsck_component_find(lfsck, type,
975 &lfsck->li_list_idle);
977 /* The component status will be updated
978 * when its prep() is called later by
979 * the LFSCK main engine. */
980 cfs_list_del_init(&com->lc_link);
981 cfs_list_add_tail(&com->lc_link,
982 &lfsck->li_list_scan);
984 start->ls_active &= ~type;
990 cfs_list_for_each_entry(com, &lfsck->li_list_scan, lc_link) {
991 start->ls_active |= com->lc_type;
992 if (flags & DOIF_RESET) {
993 rc = com->lc_ops->lfsck_reset(env, com, false);
1000 lfsck->li_args_dir = LUDA_64BITHASH | LUDA_VERIFY;
1001 if (bk->lb_param & LPF_DRYRUN) {
1002 lfsck->li_args_dir |= LUDA_VERIFY_DRYRUN;
1003 valid |= DOIV_DRYRUN;
1004 flags |= DOIF_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 rc = PTR_ERR(kthread_run(lfsck_master_engine, lfsck, "lfsck"));
1018 if (IS_ERR_VALUE(rc)) {
1019 CERROR("%s: cannot start LFSCK thread, rc = %ld\n",
1020 lfsck_lfsck2name(lfsck), rc);
1023 l_wait_event(thread->t_ctl_waitq,
1024 thread_is_running(thread) ||
1025 thread_is_stopped(thread),
1032 mutex_unlock(&lfsck->li_mutex);
1034 lfsck_instance_put(env, lfsck);
1035 return (rc < 0 ? rc : 0);
1037 EXPORT_SYMBOL(lfsck_start);
1039 int lfsck_stop(const struct lu_env *env, struct dt_device *key, bool pause)
1041 struct lfsck_instance *lfsck;
1042 struct ptlrpc_thread *thread;
1043 struct l_wait_info lwi = { 0 };
1046 lfsck = lfsck_instance_find(key, true, false);
1047 if (unlikely(lfsck == NULL))
1050 thread = &lfsck->li_thread;
1051 mutex_lock(&lfsck->li_mutex);
1052 spin_lock(&lfsck->li_lock);
1053 if (thread_is_init(thread) || thread_is_stopped(thread)) {
1054 spin_unlock(&lfsck->li_lock);
1055 mutex_unlock(&lfsck->li_mutex);
1056 lfsck_instance_put(env, lfsck);
1061 lfsck->li_paused = 1;
1062 thread_set_flags(thread, SVC_STOPPING);
1063 spin_unlock(&lfsck->li_lock);
1065 wake_up_all(&thread->t_ctl_waitq);
1066 l_wait_event(thread->t_ctl_waitq,
1067 thread_is_stopped(thread),
1069 mutex_unlock(&lfsck->li_mutex);
1070 lfsck_instance_put(env, lfsck);
1074 EXPORT_SYMBOL(lfsck_stop);
1076 int lfsck_register(const struct lu_env *env, struct dt_device *key,
1077 struct dt_device *next, bool master)
1079 struct lfsck_instance *lfsck;
1080 struct dt_object *root = NULL;
1081 struct dt_object *obj;
1082 struct lu_fid *fid = &lfsck_env_info(env)->lti_fid;
1086 lfsck = lfsck_instance_find(key, false, false);
1087 if (unlikely(lfsck != NULL))
1090 OBD_ALLOC_PTR(lfsck);
1094 mutex_init(&lfsck->li_mutex);
1095 spin_lock_init(&lfsck->li_lock);
1096 CFS_INIT_LIST_HEAD(&lfsck->li_link);
1097 CFS_INIT_LIST_HEAD(&lfsck->li_list_scan);
1098 CFS_INIT_LIST_HEAD(&lfsck->li_list_dir);
1099 CFS_INIT_LIST_HEAD(&lfsck->li_list_double_scan);
1100 CFS_INIT_LIST_HEAD(&lfsck->li_list_idle);
1101 atomic_set(&lfsck->li_ref, 1);
1102 init_waitqueue_head(&lfsck->li_thread.t_ctl_waitq);
1103 lfsck->li_next = next;
1104 lfsck->li_bottom = key;
1106 fid->f_seq = FID_SEQ_LOCAL_NAME;
1109 rc = local_oid_storage_init(env, lfsck->li_bottom, fid, &lfsck->li_los);
1113 rc = dt_root_get(env, key, fid);
1117 root = dt_locate(env, lfsck->li_bottom, fid);
1119 GOTO(out, rc = PTR_ERR(root));
1121 lfsck->li_local_root_fid = *fid;
1122 dt_try_as_dir(env, root);
1124 lfsck->li_master = 1;
1125 if (lfsck_dev_idx(lfsck->li_bottom) == 0) {
1126 rc = dt_lookup(env, root,
1127 (struct dt_rec *)(&lfsck->li_global_root_fid),
1128 (const struct dt_key *)"ROOT", BYPASS_CAPA);
1134 fid->f_seq = FID_SEQ_LOCAL_FILE;
1135 fid->f_oid = OTABLE_IT_OID;
1137 obj = dt_locate(env, lfsck->li_bottom, fid);
1139 GOTO(out, rc = PTR_ERR(obj));
1141 lfsck->li_obj_oit = obj;
1142 rc = obj->do_ops->do_index_try(env, obj, &dt_otable_features);
1144 if (rc == -ENOTSUPP)
1150 rc = lfsck_bookmark_setup(env, lfsck);
1155 rc = lfsck_namespace_setup(env, lfsck);
1160 /* XXX: more LFSCK components initialization to be added here. */
1163 rc = lfsck_instance_add(lfsck);
1165 if (root != NULL && !IS_ERR(root))
1166 lu_object_put(env, &root->do_lu);
1168 lfsck_instance_cleanup(env, lfsck);
1171 EXPORT_SYMBOL(lfsck_register);
1173 void lfsck_degister(const struct lu_env *env, struct dt_device *key)
1175 struct lfsck_instance *lfsck;
1177 lfsck = lfsck_instance_find(key, false, true);
1179 lfsck_instance_put(env, lfsck);
1181 EXPORT_SYMBOL(lfsck_degister);
1183 static int __init lfsck_init(void)
1187 lfsck_key_init_generic(&lfsck_thread_key, NULL);
1188 rc = lu_context_key_register(&lfsck_thread_key);
1192 static void __exit lfsck_exit(void)
1194 LASSERT(cfs_list_empty(&lfsck_instance_list));
1196 lu_context_key_degister(&lfsck_thread_key);
1199 MODULE_AUTHOR("Intel Corporation <http://www.intel.com/>");
1200 MODULE_DESCRIPTION("LFSCK");
1201 MODULE_LICENSE("GPL");
1203 cfs_module(lfsck, LUSTRE_VERSION_STRING, lfsck_init, lfsck_exit);