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,
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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) 2013, Intel Corporation.
26 * lustre/lfsck/lfsck_internal.h
28 * Shared definitions and declarations for the LFSCK.
30 * Author: Fan, Yong <fan.yong@intel.com>
33 #ifndef _LFSCK_INTERNAL_H
34 # define _LFSCK_INTERNAL_H
36 #include <lustre/lustre_lfsck_user.h>
37 #include <lustre/lustre_user.h>
38 #include <lustre/lustre_idl.h>
40 #include <lu_object.h>
41 #include <dt_object.h>
42 #include <lustre_net.h>
43 #include <lustre_dlm.h>
44 #include <lustre_fid.h>
45 #include <md_object.h>
47 #define HALF_SEC (HZ >> 1)
48 #define LFSCK_CHECKPOINT_INTERVAL 60
50 #define LFSCK_NAMEENTRY_DEAD 1 /* The object has been unlinked. */
51 #define LFSCK_NAMEENTRY_REMOVED 2 /* The entry has been removed. */
52 #define LFSCK_NAMEENTRY_RECREATED 3 /* The entry has been recreated. */
55 /* The lfsck file is new created, for new MDT, upgrading from old disk,
56 * or re-creating the lfsck file manually. */
59 /* The first-step system scanning. */
60 LS_SCANNING_PHASE1 = 1,
62 /* The second-step system scanning. */
63 LS_SCANNING_PHASE2 = 2,
65 /* The LFSCK processing has completed for all objects. */
68 /* The LFSCK exited automatically for failure, will not auto restart. */
71 /* The LFSCK is stopped manually, will not auto restart. */
74 /* LFSCK is paused automatically when umount,
75 * will be restarted automatically when remount. */
78 /* System crashed during the LFSCK,
79 * will be restarted automatically after recovery. */
84 /* Finish the first cycle scanning. */
85 LF_SCANNED_ONCE = 0x00000001ULL,
87 /* There is some namespace inconsistency. */
88 LF_INCONSISTENT = 0x00000002ULL,
90 /* The device is upgraded from 1.8 format. */
91 LF_UPGRADE = 0x00000004ULL,
94 struct lfsck_position {
95 /* low layer object table-based iteration position. */
98 /* parent FID for directory traversal. */
99 struct lu_fid lp_dir_parent;
101 /* namespace-based directory traversal position. */
105 struct lfsck_bookmark {
106 /* Magic number to detect that this struct contains valid data. */
109 /* For compatible with old versions. */
112 /* See 'enum lfsck_param_flags' */
115 /* How many items can be scanned at most per second. */
116 __u32 lb_speed_limit;
118 /* For 64-bits aligned. */
121 /* For future using. */
122 __u64 lb_reserved[6];
125 struct lfsck_namespace {
126 /* Magic number to detect that this struct contains valid data. */
129 /* See 'enum lfsck_status'. */
132 /* See 'enum lfsck_flags'. */
135 /* How many completed LFSCK runs on the device. */
136 __u32 ln_success_count;
138 /* How long the LFSCK phase1 has run in seconds. */
139 __u32 ln_run_time_phase1;
141 /* How long the LFSCK phase2 has run in seconds. */
142 __u32 ln_run_time_phase2;
144 /* Time for the last LFSCK completed in seconds since epoch. */
145 __u64 ln_time_last_complete;
147 /* Time for the latest LFSCK ran in seconds since epoch. */
148 __u64 ln_time_latest_start;
150 /* Time for the last LFSCK checkpoint in seconds since epoch. */
151 __u64 ln_time_last_checkpoint;
153 /* Position for the latest LFSCK started from. */
154 struct lfsck_position ln_pos_latest_start;
156 /* Position for the last LFSCK checkpoint. */
157 struct lfsck_position ln_pos_last_checkpoint;
159 /* Position for the first should be updated object. */
160 struct lfsck_position ln_pos_first_inconsistent;
162 /* How many items (including dir) have been checked. */
163 __u64 ln_items_checked;
165 /* How many items have been repaired. */
166 __u64 ln_items_repaired;
168 /* How many items failed to be processed. */
169 __u64 ln_items_failed;
171 /* How many directories have been traversed. */
172 __u64 ln_dirs_checked;
174 /* How many multiple-linked objects have been checked. */
175 __u64 ln_mlinked_checked;
177 /* How many objects have been double scanned. */
178 __u64 ln_objs_checked_phase2;
180 /* How many objects have been reparied during double scan. */
181 __u64 ln_objs_repaired_phase2;
183 /* How many objects failed to be processed during double scan. */
184 __u64 ln_objs_failed_phase2;
186 /* How many objects with nlink fixed. */
187 __u64 ln_objs_nlink_repaired;
189 /* How many objects were lost before, but found back now. */
190 __u64 ln_objs_lost_found;
192 /* The latest object has been processed (failed) during double scan. */
193 struct lu_fid ln_fid_latest_scanned_phase2;
195 /* For further using. 256-bytes aligned now. */
196 __u64 ln_reserved[2];
199 struct lfsck_component;
201 struct lfsck_operations {
202 int (*lfsck_reset)(const struct lu_env *env,
203 struct lfsck_component *com,
206 void (*lfsck_fail)(const struct lu_env *env,
207 struct lfsck_component *com,
210 int (*lfsck_checkpoint)(const struct lu_env *env,
211 struct lfsck_component *com,
214 int (*lfsck_prep)(const struct lu_env *env,
215 struct lfsck_component *com);
217 int (*lfsck_exec_oit)(const struct lu_env *env,
218 struct lfsck_component *com,
219 struct dt_object *obj);
221 int (*lfsck_exec_dir)(const struct lu_env *env,
222 struct lfsck_component *com,
223 struct dt_object *obj,
224 struct lu_dirent *ent);
226 int (*lfsck_post)(const struct lu_env *env,
227 struct lfsck_component *com,
231 int (*lfsck_dump)(const struct lu_env *env,
232 struct lfsck_component *com,
236 int (*lfsck_double_scan)(const struct lu_env *env,
237 struct lfsck_component *com);
240 struct lfsck_component {
241 /* into lfsck_instance::li_list_(scan,double_scan,idle} */
244 /* into lfsck_instance::li_list_dir */
245 cfs_list_t lc_link_dir;
246 struct rw_semaphore lc_sem;
249 struct lfsck_position lc_pos_start;
250 struct lfsck_instance *lc_lfsck;
251 struct dt_object *lc_obj;
252 struct lfsck_operations *lc_ops;
257 /* How many objects have been checked since last checkpoint. */
258 __u32 lc_new_checked;
259 unsigned int lc_journal:1;
263 struct lfsck_instance {
264 struct mutex li_mutex;
267 /* Link into the lfsck_instance_list. */
270 /* For the components in (first) scanning via otable-based iteration. */
271 cfs_list_t li_list_scan;
273 /* For the components in scanning via directory traversal. Because
274 * directory traversal cannot guarantee all the object be scanned,
275 * so the component in the li_list_dir must be in li_list_scan. */
276 cfs_list_t li_list_dir;
278 /* For the components in double scanning. */
279 cfs_list_t li_list_double_scan;
281 /* For the components those are not scanning now. */
282 cfs_list_t li_list_idle;
285 struct ptlrpc_thread li_thread;
287 /* The time for last checkpoint, jiffies */
288 cfs_time_t li_time_last_checkpoint;
290 /* The time for next checkpoint, jiffies */
291 cfs_time_t li_time_next_checkpoint;
293 struct dt_device *li_next;
294 struct dt_device *li_bottom;
295 struct ldlm_namespace *li_namespace;
296 struct local_oid_storage *li_los;
297 struct lu_fid li_local_root_fid; /* backend root "/" */
298 struct lu_fid li_global_root_fid; /* /ROOT */
299 struct dt_object *li_bookmark_obj;
300 struct lfsck_bookmark li_bookmark_ram;
301 struct lfsck_bookmark li_bookmark_disk;
302 struct lfsck_position li_pos_current;
304 /* Obj for otable-based iteration */
305 struct dt_object *li_obj_oit;
307 /* Obj for directory traversal */
308 struct dt_object *li_obj_dir;
310 /* It for otable-based iteration */
311 struct dt_it *li_di_oit;
313 /* It for directory traversal */
314 struct dt_it *li_di_dir;
316 /* namespace-based directory traversal position. */
319 /* Arguments for low layer otable-based iteration. */
322 /* Arugments for namespace-based directory traversal. */
325 /* Schedule for every N objects. */
328 /* Sleep N jiffies for each schedule. */
331 /* How many objects have been scanned since last sleep. */
332 __u32 li_new_scanned;
334 unsigned int li_paused:1, /* The lfsck is paused. */
335 li_oit_over:1, /* oit is finished. */
336 li_drop_dryrun:1, /* Ever dryrun, not now. */
337 li_master:1, /* Master instance or not. */
338 li_current_oit_processed:1;
341 enum lfsck_linkea_flags {
342 /* The linkea entries does not match the object nlinks. */
343 LLF_UNMATCH_NLINKS = 0x01,
345 /* Fail to repair the multiple-linked objects during the double scan. */
346 LLF_REPAIR_FAILED = 0x02,
349 struct lfsck_thread_info {
350 struct lu_name lti_name;
351 struct lu_buf lti_buf;
352 struct lu_buf lti_linkea_buf;
353 struct lu_fid lti_fid;
354 struct lu_fid lti_fid2;
355 struct lu_attr lti_la;
356 struct ost_id lti_oi;
358 struct lustre_mdt_attrs lti_lma;
359 /* old LMA for compatibility */
360 char lti_lma_old[LMA_OLD_SIZE];
362 /* lti_ent and lti_key must be conjoint,
363 * then lti_ent::lde_name will be lti_key. */
364 struct lu_dirent lti_ent;
365 char lti_key[NAME_MAX + 16];
369 void lfsck_component_cleanup(const struct lu_env *env,
370 struct lfsck_component *com);
371 int lfsck_bits_dump(char **buf, int *len, int bits, const char *names[],
373 int lfsck_time_dump(char **buf, int *len, __u64 time, const char *prefix);
374 int lfsck_pos_dump(char **buf, int *len, struct lfsck_position *pos,
376 void lfsck_pos_fill(const struct lu_env *env, struct lfsck_instance *lfsck,
377 struct lfsck_position *pos, bool init);
378 void lfsck_control_speed(struct lfsck_instance *lfsck);
379 int lfsck_reset(const struct lu_env *env, struct lfsck_instance *lfsck,
381 void lfsck_fail(const struct lu_env *env, struct lfsck_instance *lfsck,
383 int lfsck_checkpoint(const struct lu_env *env, struct lfsck_instance *lfsck);
384 int lfsck_prep(const struct lu_env *env, struct lfsck_instance *lfsck);
385 int lfsck_exec_oit(const struct lu_env *env, struct lfsck_instance *lfsck,
386 struct dt_object *obj);
387 int lfsck_exec_dir(const struct lu_env *env, struct lfsck_instance *lfsck,
388 struct dt_object *obj, struct lu_dirent *ent);
389 int lfsck_post(const struct lu_env *env, struct lfsck_instance *lfsck,
391 int lfsck_double_scan(const struct lu_env *env, struct lfsck_instance *lfsck);
394 int lfsck_master_engine(void *args);
396 /* lfsck_bookmark.c */
397 int lfsck_bookmark_store(const struct lu_env *env,
398 struct lfsck_instance *lfsck);
399 int lfsck_bookmark_setup(const struct lu_env *env,
400 struct lfsck_instance *lfsck);
402 /* lfsck_namespace.c */
403 int lfsck_namespace_setup(const struct lu_env *env,
404 struct lfsck_instance *lfsck);
406 extern const char *lfsck_status_names[];
407 extern const char *lfsck_flags_names[];
408 extern const char *lfsck_param_names[];
409 extern struct lu_context_key lfsck_thread_key;
411 static inline struct lfsck_thread_info *
412 lfsck_env_info(const struct lu_env *env)
414 struct lfsck_thread_info *info;
416 info = lu_context_key_get(&env->le_ctx, &lfsck_thread_key);
417 LASSERT(info != NULL);
421 static inline const struct lu_name *
422 lfsck_name_get_const(const struct lu_env *env, const void *area, ssize_t len)
424 struct lu_name *lname;
426 lname = &lfsck_env_info(env)->lti_name;
427 lname->ln_name = area;
428 lname->ln_namelen = len;
432 static inline struct lu_buf *
433 lfsck_buf_get(const struct lu_env *env, void *area, ssize_t len)
437 buf = &lfsck_env_info(env)->lti_buf;
443 static inline const struct lu_buf *
444 lfsck_buf_get_const(const struct lu_env *env, const void *area, ssize_t len)
448 buf = &lfsck_env_info(env)->lti_buf;
449 buf->lb_buf = (void *)area;
454 static inline char *lfsck_lfsck2name(struct lfsck_instance *lfsck)
456 return lfsck->li_bottom->dd_lu_dev.ld_obd->obd_name;
459 static inline const struct lu_fid *lfsck_dto2fid(const struct dt_object *obj)
461 return lu_object_fid(&obj->do_lu);
464 static inline void lfsck_pos_set_zero(struct lfsck_position *pos)
466 memset(pos, 0, sizeof(*pos));
469 static inline int lfsck_pos_is_zero(const struct lfsck_position *pos)
471 return pos->lp_oit_cookie == 0 && fid_is_zero(&pos->lp_dir_parent);
474 static inline int lfsck_pos_is_eq(const struct lfsck_position *pos1,
475 const struct lfsck_position *pos2)
477 if (pos1->lp_oit_cookie < pos2->lp_oit_cookie)
480 if (pos1->lp_oit_cookie > pos2->lp_oit_cookie)
483 if (fid_is_zero(&pos1->lp_dir_parent) &&
484 !fid_is_zero(&pos2->lp_dir_parent))
487 if (!fid_is_zero(&pos1->lp_dir_parent) &&
488 fid_is_zero(&pos2->lp_dir_parent))
491 if (fid_is_zero(&pos1->lp_dir_parent) &&
492 fid_is_zero(&pos2->lp_dir_parent))
495 LASSERT(lu_fid_eq(&pos1->lp_dir_parent, &pos2->lp_dir_parent));
497 if (pos1->lp_dir_cookie < pos2->lp_dir_cookie)
500 if (pos1->lp_dir_cookie > pos2->lp_dir_cookie)
506 static void inline lfsck_position_le_to_cpu(struct lfsck_position *des,
507 struct lfsck_position *src)
509 des->lp_oit_cookie = le64_to_cpu(src->lp_oit_cookie);
510 fid_le_to_cpu(&des->lp_dir_parent, &src->lp_dir_parent);
511 des->lp_dir_cookie = le64_to_cpu(src->lp_dir_cookie);
514 static void inline lfsck_position_cpu_to_le(struct lfsck_position *des,
515 struct lfsck_position *src)
517 des->lp_oit_cookie = cpu_to_le64(src->lp_oit_cookie);
518 fid_cpu_to_le(&des->lp_dir_parent, &src->lp_dir_parent);
519 des->lp_dir_cookie = cpu_to_le64(src->lp_dir_cookie);
522 static inline umode_t lfsck_object_type(const struct dt_object *obj)
524 return lu_object_attr(&obj->do_lu);
527 static inline int lfsck_is_dead_obj(const struct dt_object *obj)
529 struct lu_object_header *loh = obj->do_lu.lo_header;
531 return !!test_bit(LU_OBJECT_HEARD_BANSHEE, &loh->loh_flags);
534 static inline struct dt_object *lfsck_object_find(const struct lu_env *env,
535 struct lfsck_instance *lfsck,
536 const struct lu_fid *fid)
538 return lu2dt(lu_object_find_slice(env, dt2lu_dev(lfsck->li_next),
542 static inline struct dt_object *lfsck_object_get(struct dt_object *obj)
544 lu_object_get(&obj->do_lu);
548 static inline void lfsck_object_put(const struct lu_env *env,
549 struct dt_object *obj)
551 lu_object_put(env, &obj->do_lu);
554 static inline mdsno_t lfsck_dev_idx(struct dt_device *dev)
556 return dev->dd_lu_dev.ld_site->ld_seq_site->ss_node_id;
559 #endif /* _LFSCK_INTERNAL_H */