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, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2015, 2017, Intel Corporation.
27 * lustre/target/update_recovery.c
29 * This file implement the methods to handle the update recovery.
31 * During DNE recovery, the recovery thread will redo the operation according
32 * to the transaction no, and these replay are either from client replay req
33 * or update replay records(for distribute transaction) in the update log.
34 * For distribute transaction replay, the replay thread will call
35 * distribute_txn_replay_handle() to handle the updates.
37 * After the Master MDT restarts, it will retrieve the update records from all
38 * of MDTs, for each distributed operation, it will check updates on all MDTs,
39 * if some updates records are missing on some MDTs, the replay thread will redo
40 * updates on these MDTs.
42 * Author: Di Wang <di.wang@intel.com>
44 #define DEBUG_SUBSYSTEM S_CLASS
46 #include <lu_target.h>
47 #include <lustre_obdo.h>
48 #include <lustre_update.h>
49 #include <lustre_swab.h>
50 #include <md_object.h>
52 #include <obd_class.h>
54 #include "tgt_internal.h"
57 * Lookup distribute_txn_replay req
59 * Lookup distribute_txn_replay in the replay list by batchid.
60 * It is assumed the list has been locked before calling this function.
62 * \param[in] tdtd distribute_txn_data, which holds the replay
64 * \param[in] batchid batchid used by lookup.
66 * \retval pointer of the replay if succeeds.
67 * \retval NULL if can not find it.
69 static struct distribute_txn_replay_req *
70 dtrq_lookup(struct target_distribute_txn_data *tdtd, __u64 batchid)
72 struct distribute_txn_replay_req *tmp;
73 struct distribute_txn_replay_req *dtrq = NULL;
75 list_for_each_entry(tmp, &tdtd->tdtd_replay_list, dtrq_list) {
76 if (tmp->dtrq_batchid == batchid) {
85 * insert distribute txn replay req
87 * Insert distribute txn replay to the replay list, and it assumes the
88 * list has been looked. Note: the replay list is a sorted list, which
89 * is sorted by master transno. It is assumed the replay list has been
90 * locked before calling this function.
92 * \param[in] tdtd target distribute txn data where replay list is
93 * \param[in] new distribute txn replay to be inserted
95 * \retval 0 if insertion succeeds
96 * \retval EEXIST if the dtrq already exists
98 static int dtrq_insert(struct target_distribute_txn_data *tdtd,
99 struct distribute_txn_replay_req *new)
101 struct distribute_txn_replay_req *iter;
103 /* Check if the dtrq has been added to the list */
104 iter = dtrq_lookup(tdtd, new->dtrq_batchid);
108 list_for_each_entry_reverse(iter, &tdtd->tdtd_replay_list, dtrq_list) {
109 if (iter->dtrq_master_transno > new->dtrq_master_transno)
112 /* If there are mulitple replay req with same transno, then
113 * sort them with batchid */
114 if (iter->dtrq_master_transno == new->dtrq_master_transno &&
115 iter->dtrq_batchid > new->dtrq_batchid)
118 list_add(&new->dtrq_list, &iter->dtrq_list);
122 if (list_empty(&new->dtrq_list))
123 list_add(&new->dtrq_list, &tdtd->tdtd_replay_list);
129 * create distribute txn replay req
131 * Allocate distribute txn replay req according to the update records.
133 * \param[in] tdtd target distribute txn data where replay list is.
134 * \param[in] record update records from the update log.
136 * \retval the pointer of distribute txn replay req if
137 * the creation succeeds.
138 * \retval NULL if the creation fails.
140 static struct distribute_txn_replay_req *
141 dtrq_create(struct target_distribute_txn_data *tdtd,
142 struct llog_update_record *lur)
144 struct distribute_txn_replay_req *new;
148 RETURN(ERR_PTR(-ENOMEM));
150 new->dtrq_lur_size = llog_update_record_size(lur);
151 OBD_ALLOC_LARGE(new->dtrq_lur, new->dtrq_lur_size);
152 if (new->dtrq_lur == NULL) {
154 RETURN(ERR_PTR(-ENOMEM));
157 memcpy(new->dtrq_lur, lur, new->dtrq_lur_size);
159 /* If the transno in the update record is 0, it means the
160 * update are from master MDT, and it will use the master
161 * last committed transno as its master transno. Later, if
162 * the update records are gotten from slave MDTs, then these
163 * transno will be replaced.
164 * See insert_update_records_to_replay_list(). */
165 if (lur->lur_update_rec.ur_master_transno == 0) {
166 new->dtrq_lur->lur_update_rec.ur_master_transno =
167 tdtd->tdtd_lut->lut_obd->obd_last_committed;
168 new->dtrq_master_transno =
169 tdtd->tdtd_lut->lut_obd->obd_last_committed;
171 new->dtrq_master_transno =
172 lur->lur_update_rec.ur_master_transno;
175 new->dtrq_batchid = lur->lur_update_rec.ur_batchid;
177 spin_lock_init(&new->dtrq_sub_list_lock);
178 INIT_LIST_HEAD(&new->dtrq_sub_list);
179 INIT_LIST_HEAD(&new->dtrq_list);
185 * Lookup distribute sub replay
187 * Lookup distribute sub replay in the sub list of distribute_txn_replay by
190 * \param[in] distribute_txn_replay_req the distribute txn replay req to lookup
191 * \param[in] mdt_index the mdt_index as the key of lookup
193 * \retval the pointer of sub replay if it can be found.
194 * \retval NULL if it can not find.
196 struct distribute_txn_replay_req_sub *
197 dtrq_sub_lookup(struct distribute_txn_replay_req *dtrq, __u32 mdt_index)
199 struct distribute_txn_replay_req_sub *dtrqs = NULL;
200 struct distribute_txn_replay_req_sub *tmp;
202 list_for_each_entry(tmp, &dtrq->dtrq_sub_list, dtrqs_list) {
203 if (tmp->dtrqs_mdt_index == mdt_index) {
212 * Try to add cookie to sub distribute txn request
214 * Check if the update log cookie has been added to the request, if not,
215 * add it to the dtrqs_cookie_list.
217 * \param[in] dtrqs sub replay req where cookies to be added.
218 * \param[in] cookie cookie to be added.
220 * \retval 0 if the cookie is adding succeeds.
221 * \retval negative errno if adding fails.
223 static int dtrq_sub_add_cookie(struct distribute_txn_replay_req_sub *dtrqs,
224 struct llog_cookie *cookie)
226 struct sub_thandle_cookie *new;
232 INIT_LIST_HEAD(&new->stc_list);
233 new->stc_cookie = *cookie;
234 /* Note: only single thread will access one sub_request each time,
235 * so no need lock here */
236 list_add(&new->stc_list, &dtrqs->dtrqs_cookie_list);
242 * Insert distribute txn sub req replay
244 * Allocate sub replay req and insert distribute txn replay list.
246 * \param[in] dtrq d to be added
247 * \param[in] cookie the cookie of the update record
248 * \param[in] mdt_index the mdt_index of the update record
250 * \retval 0 if the adding succeeds.
251 * \retval negative errno if the adding fails.
254 dtrq_sub_create_and_insert(struct distribute_txn_replay_req *dtrq,
255 struct llog_cookie *cookie,
258 struct distribute_txn_replay_req_sub *dtrqs = NULL;
259 struct distribute_txn_replay_req_sub *new;
263 spin_lock(&dtrq->dtrq_sub_list_lock);
264 dtrqs = dtrq_sub_lookup(dtrq, mdt_index);
265 spin_unlock(&dtrq->dtrq_sub_list_lock);
267 rc = dtrq_sub_add_cookie(dtrqs, cookie);
275 INIT_LIST_HEAD(&new->dtrqs_list);
276 INIT_LIST_HEAD(&new->dtrqs_cookie_list);
277 new->dtrqs_mdt_index = mdt_index;
278 spin_lock(&dtrq->dtrq_sub_list_lock);
279 dtrqs = dtrq_sub_lookup(dtrq, mdt_index);
281 list_add(&new->dtrqs_list, &dtrq->dtrq_sub_list);
286 spin_unlock(&dtrq->dtrq_sub_list_lock);
288 rc = dtrq_sub_add_cookie(dtrqs, cookie);
294 * append updates to the current replay updates
296 * Append more updates to the existent replay update. And this is only
297 * used when combining mulitple updates into one large updates during
300 * \param[in] dtrq the update replay request where the new update
301 * records will be added.
302 * \param[in] lur the new update record.
304 * \retval 0 if appending succeeds.
305 * \retval negative errno if appending fails.
307 static int dtrq_append_updates(struct distribute_txn_replay_req *dtrq,
308 struct update_records *record)
310 struct llog_update_record *new_lur;
311 size_t lur_size = dtrq->dtrq_lur_size;
315 /* Because several threads might retrieve the same records from
316 * different targets, and we only need one copy of records. So
317 * we will check if the records is in the next one, if not, just
319 spin_lock(&dtrq->dtrq_sub_list_lock);
320 if (dtrq->dtrq_lur->lur_update_rec.ur_index + 1 != record->ur_index) {
321 spin_unlock(&dtrq->dtrq_sub_list_lock);
324 dtrq->dtrq_lur->lur_update_rec.ur_index++;
325 spin_unlock(&dtrq->dtrq_sub_list_lock);
327 lur_size += update_records_size(record);
328 OBD_ALLOC_LARGE(new_lur, lur_size);
329 if (new_lur == NULL) {
330 spin_lock(&dtrq->dtrq_sub_list_lock);
331 dtrq->dtrq_lur->lur_update_rec.ur_index--;
332 spin_unlock(&dtrq->dtrq_sub_list_lock);
336 /* Copy the old and new records to the new allocated buffer */
337 memcpy(new_lur, dtrq->dtrq_lur, dtrq->dtrq_lur_size);
338 ptr = (char *)&new_lur->lur_update_rec +
339 update_records_size(&new_lur->lur_update_rec);
340 memcpy(ptr, &record->ur_ops,
341 update_records_size(record) -
342 offsetof(struct update_records, ur_ops));
344 new_lur->lur_update_rec.ur_update_count += record->ur_update_count;
345 new_lur->lur_update_rec.ur_param_count += record->ur_param_count;
346 new_lur->lur_hdr.lrh_len = llog_update_record_size(new_lur);
348 /* Replace the records */
349 OBD_FREE_LARGE(dtrq->dtrq_lur, dtrq->dtrq_lur_size);
350 dtrq->dtrq_lur = new_lur;
351 dtrq->dtrq_lur_size = lur_size;
352 dtrq->dtrq_lur->lur_update_rec.ur_flags = record->ur_flags;
353 update_records_dump(&new_lur->lur_update_rec, D_INFO, true);
358 * Insert update records to the replay list.
360 * Allocate distribute txn replay req and insert it into the replay
361 * list, then insert the update records into the replay req.
363 * \param[in] tdtd distribute txn replay data where the replay list
365 * \param[in] record the update record
366 * \param[in] cookie cookie of the record
367 * \param[in] index mdt index of the record
369 * \retval 0 if the adding succeeds.
370 * \retval negative errno if the adding fails.
373 insert_update_records_to_replay_list(struct target_distribute_txn_data *tdtd,
374 struct llog_update_record *lur,
375 struct llog_cookie *cookie,
378 struct distribute_txn_replay_req *dtrq;
379 struct update_records *record = &lur->lur_update_rec;
380 bool replace_record = false;
384 CDEBUG(D_HA, "%s: insert record batchid = %llu transno = %llu"
385 " mdt_index %u\n", tdtd->tdtd_lut->lut_obd->obd_name,
386 record->ur_batchid, record->ur_master_transno, mdt_index);
388 /* Update batchid if necessary */
389 spin_lock(&tdtd->tdtd_batchid_lock);
390 if (record->ur_batchid >= tdtd->tdtd_batchid) {
391 CDEBUG(D_HA, "%s update batchid from %llu" " to %llu\n",
392 tdtd->tdtd_lut->lut_obd->obd_name,
393 tdtd->tdtd_batchid, record->ur_batchid);
394 tdtd->tdtd_batchid = record->ur_batchid + 1;
396 spin_unlock(&tdtd->tdtd_batchid_lock);
399 spin_lock(&tdtd->tdtd_replay_list_lock);
400 /* First try to build the replay update request with the records */
401 dtrq = dtrq_lookup(tdtd, record->ur_batchid);
403 spin_unlock(&tdtd->tdtd_replay_list_lock);
404 dtrq = dtrq_create(tdtd, lur);
406 RETURN(PTR_ERR(dtrq));
408 spin_lock(&tdtd->tdtd_replay_list_lock);
409 rc = dtrq_insert(tdtd, dtrq);
411 spin_unlock(&tdtd->tdtd_replay_list_lock);
418 /* If the master transno in update header is not
419 * matched with the one in the record, then it means
420 * the dtrq is originally created by master record,
421 * so we need update master transno and reposition
422 * the dtrq(by master transno) in the list and also
423 * replace update record */
424 if (record->ur_master_transno != 0 &&
425 dtrq->dtrq_master_transno != record->ur_master_transno &&
426 dtrq->dtrq_lur != NULL) {
427 list_del_init(&dtrq->dtrq_list);
428 dtrq->dtrq_lur->lur_update_rec.ur_master_transno =
429 record->ur_master_transno;
431 dtrq->dtrq_master_transno = record->ur_master_transno;
432 replace_record = true;
433 /* try to insert again */
434 rc = dtrq_insert(tdtd, dtrq);
436 spin_unlock(&tdtd->tdtd_replay_list_lock);
442 spin_unlock(&tdtd->tdtd_replay_list_lock);
444 /* Because there should be only thread access the update record, so
445 * we do not need lock here */
446 if (replace_record) {
447 /* Replace the update record and master transno */
448 OBD_FREE_LARGE(dtrq->dtrq_lur, dtrq->dtrq_lur_size);
449 dtrq->dtrq_lur = NULL;
450 dtrq->dtrq_lur_size = llog_update_record_size(lur);
451 OBD_ALLOC_LARGE(dtrq->dtrq_lur, dtrq->dtrq_lur_size);
452 if (dtrq->dtrq_lur == NULL)
455 memcpy(dtrq->dtrq_lur, lur, dtrq->dtrq_lur_size);
458 /* This is a partial update records, let's try to append
459 * the record to the current replay request */
460 if (record->ur_flags & UPDATE_RECORD_CONTINUE)
461 rc = dtrq_append_updates(dtrq, record);
463 /* Then create and add sub update request */
464 rc = dtrq_sub_create_and_insert(dtrq, cookie, mdt_index);
468 EXPORT_SYMBOL(insert_update_records_to_replay_list);
471 * Dump updates of distribute txns.
473 * Output all of recovery updates in the distribute txn list to the
476 * \param[in] tdtd distribute txn data where all of distribute txn
478 * \param[in] mask debug mask
480 void dtrq_list_dump(struct target_distribute_txn_data *tdtd, unsigned int mask)
482 struct distribute_txn_replay_req *dtrq;
484 spin_lock(&tdtd->tdtd_replay_list_lock);
485 list_for_each_entry(dtrq, &tdtd->tdtd_replay_list, dtrq_list)
486 update_records_dump(&dtrq->dtrq_lur->lur_update_rec, mask,
488 spin_unlock(&tdtd->tdtd_replay_list_lock);
490 EXPORT_SYMBOL(dtrq_list_dump);
493 * Destroy distribute txn replay req
495 * Destroy distribute txn replay req and all of subs.
497 * \param[in] dtrq distribute txn replqy req to be destroyed.
499 void dtrq_destroy(struct distribute_txn_replay_req *dtrq)
501 struct distribute_txn_replay_req_sub *dtrqs;
502 struct distribute_txn_replay_req_sub *tmp;
504 LASSERT(list_empty(&dtrq->dtrq_list));
505 spin_lock(&dtrq->dtrq_sub_list_lock);
506 list_for_each_entry_safe(dtrqs, tmp, &dtrq->dtrq_sub_list, dtrqs_list) {
507 struct sub_thandle_cookie *stc;
508 struct sub_thandle_cookie *tmp;
510 list_del(&dtrqs->dtrqs_list);
511 list_for_each_entry_safe(stc, tmp, &dtrqs->dtrqs_cookie_list,
513 list_del(&stc->stc_list);
518 spin_unlock(&dtrq->dtrq_sub_list_lock);
520 if (dtrq->dtrq_lur != NULL)
521 OBD_FREE_LARGE(dtrq->dtrq_lur, dtrq->dtrq_lur_size);
525 EXPORT_SYMBOL(dtrq_destroy);
528 * Destroy all of replay req.
530 * Destroy all of replay req in the replay list.
532 * \param[in] tdtd target distribute txn data where the replay list is.
534 void dtrq_list_destroy(struct target_distribute_txn_data *tdtd)
536 struct distribute_txn_replay_req *dtrq;
537 struct distribute_txn_replay_req *tmp;
539 spin_lock(&tdtd->tdtd_replay_list_lock);
540 list_for_each_entry_safe(dtrq, tmp, &tdtd->tdtd_replay_list,
542 list_del_init(&dtrq->dtrq_list);
545 list_for_each_entry_safe(dtrq, tmp, &tdtd->tdtd_replay_finish_list,
547 list_del_init(&dtrq->dtrq_list);
550 spin_unlock(&tdtd->tdtd_replay_list_lock);
552 EXPORT_SYMBOL(dtrq_list_destroy);
555 * Get next req in the replay list
557 * Get next req needs to be replayed, since it is a sorted list
558 * (by master MDT transno)
560 * \param[in] tdtd distribute txn data where the replay list is
562 * \retval the pointer of update recovery header
564 struct distribute_txn_replay_req *
565 distribute_txn_get_next_req(struct target_distribute_txn_data *tdtd)
567 struct distribute_txn_replay_req *dtrq = NULL;
569 spin_lock(&tdtd->tdtd_replay_list_lock);
570 if (!list_empty(&tdtd->tdtd_replay_list)) {
571 dtrq = list_entry(tdtd->tdtd_replay_list.next,
572 struct distribute_txn_replay_req, dtrq_list);
573 list_del_init(&dtrq->dtrq_list);
575 spin_unlock(&tdtd->tdtd_replay_list_lock);
579 EXPORT_SYMBOL(distribute_txn_get_next_req);
582 * Get next transno in the replay list, because this is the sorted
583 * list, so it will return the transno of next req in the list.
585 * \param[in] tdtd distribute txn data where the replay list is
587 * \retval the transno of next update in the list
589 __u64 distribute_txn_get_next_transno(struct target_distribute_txn_data *tdtd)
591 struct distribute_txn_replay_req *dtrq = NULL;
594 spin_lock(&tdtd->tdtd_replay_list_lock);
595 if (!list_empty(&tdtd->tdtd_replay_list)) {
596 dtrq = list_entry(tdtd->tdtd_replay_list.next,
597 struct distribute_txn_replay_req, dtrq_list);
598 transno = dtrq->dtrq_master_transno;
600 spin_unlock(&tdtd->tdtd_replay_list_lock);
602 CDEBUG(D_HA, "%s: Next update transno %llu\n",
603 tdtd->tdtd_lut->lut_obd->obd_name, transno);
606 EXPORT_SYMBOL(distribute_txn_get_next_transno);
608 struct distribute_txn_replay_req *
609 distribute_txn_lookup_finish_list(struct target_distribute_txn_data *tdtd,
612 struct distribute_txn_replay_req *dtrq = NULL;
613 struct distribute_txn_replay_req *iter;
615 spin_lock(&tdtd->tdtd_replay_list_lock);
616 list_for_each_entry(iter, &tdtd->tdtd_replay_finish_list, dtrq_list) {
617 if (iter->dtrq_xid == xid) {
622 spin_unlock(&tdtd->tdtd_replay_list_lock);
626 bool is_req_replayed_by_update(struct ptlrpc_request *req)
628 struct lu_target *tgt = class_exp2tgt(req->rq_export);
629 struct distribute_txn_replay_req *dtrq;
631 if (tgt->lut_tdtd == NULL)
634 dtrq = distribute_txn_lookup_finish_list(tgt->lut_tdtd, req->rq_xid);
640 EXPORT_SYMBOL(is_req_replayed_by_update);
643 * Check if the update of one object is committed
645 * Check whether the update for the object is committed by checking whether
646 * the correspondent sub exists in the replay req. If it is committed, mark
647 * the committed flag in correspondent the sub thandle.
649 * \param[in] env execution environment
650 * \param[in] dtrq replay request
651 * \param[in] dt_obj object for the update
652 * \param[in] top_th top thandle
653 * \param[in] sub_th sub thandle which the update belongs to
655 * \retval 1 if the update is not committed.
656 * \retval 0 if the update is committed.
657 * \retval negative errno if some other failures happen.
659 static int update_is_committed(const struct lu_env *env,
660 struct distribute_txn_replay_req *dtrq,
661 struct dt_object *dt_obj,
662 struct top_thandle *top_th,
663 struct sub_thandle *st)
665 struct seq_server_site *seq_site;
666 const struct lu_fid *fid = lu_object_fid(&dt_obj->do_lu);
667 struct distribute_txn_replay_req_sub *dtrqs;
671 if (st->st_sub_th != NULL)
674 if (st->st_committed)
677 seq_site = lu_site2seq(dt_obj->do_lu.lo_dev->ld_site);
678 if (fid_is_update_log(fid) || fid_is_update_log_dir(fid)) {
679 mdt_index = fid_oid(fid);
680 } else if (!fid_seq_in_fldb(fid_seq(fid))) {
681 mdt_index = seq_site->ss_node_id;
683 struct lu_server_fld *fld;
684 struct lu_seq_range range = {0};
687 fld = seq_site->ss_server_fld;
688 fld_range_set_type(&range, LU_SEQ_RANGE_MDT);
689 LASSERT(fld->lsf_seq_lookup != NULL);
690 rc = fld->lsf_seq_lookup(env, fld, fid_seq(fid),
694 mdt_index = range.lsr_index;
697 dtrqs = dtrq_sub_lookup(dtrq, mdt_index);
698 if (dtrqs != NULL || top_th->tt_multiple_thandle->tmt_committed) {
699 st->st_committed = 1;
701 struct sub_thandle_cookie *stc;
702 struct sub_thandle_cookie *tmp;
704 list_for_each_entry_safe(stc, tmp,
705 &dtrqs->dtrqs_cookie_list,
707 list_move(&stc->stc_list, &st->st_cookie_list);
712 CDEBUG(D_HA, "Update of "DFID "on MDT%u is not committed\n", PFID(fid),
719 * Implementation of different update methods for update recovery.
721 * These following functions update_recovery_$(update_name) implement
722 * different updates recovery methods. They will extract the parameters
723 * from the common parameters area and call correspondent dt API to redo
726 * \param[in] env execution environment
727 * \param[in] op update operation to be replayed
728 * \param[in] params common update parameters which holds all parameters
730 * \param[in] th transaction handle
731 * \param[in] declare indicate it will do declare or real execution, true
732 * means declare, false means real execution
734 * \retval 0 if it succeeds.
735 * \retval negative errno if it fails.
737 static int update_recovery_create(const struct lu_env *env,
738 struct dt_object *dt_obj,
739 const struct update_op *op,
740 const struct update_params *params,
741 struct thandle_exec_args *ta,
744 struct update_thread_info *uti = update_env_info(env);
745 struct llog_update_record *lur = uti->uti_dtrq->dtrq_lur;
746 struct lu_attr *attr = &uti->uti_attr;
748 struct obdo *lobdo = &uti->uti_obdo;
749 struct dt_object_format dof;
751 unsigned int param_count;
755 if (dt_object_exists(dt_obj))
758 param_count = lur->lur_update_rec.ur_param_count;
759 wobdo = update_params_get_param_buf(params, op->uop_params_off[0],
763 if (size != sizeof(*wobdo))
766 if (LLOG_REC_HDR_NEEDS_SWABBING(&lur->lur_hdr))
767 lustre_swab_obdo(wobdo);
769 lustre_get_wire_obdo(NULL, lobdo, wobdo);
770 la_from_obdo(attr, lobdo, lobdo->o_valid);
772 dof.dof_type = dt_mode_to_dft(attr->la_mode);
774 rc = out_tx_create(env, dt_obj, attr, NULL, &dof,
780 static int update_recovery_destroy(const struct lu_env *env,
781 struct dt_object *dt_obj,
782 const struct update_op *op,
783 const struct update_params *params,
784 struct thandle_exec_args *ta,
790 rc = out_tx_destroy(env, dt_obj, ta, th, NULL, 0);
795 static int update_recovery_ref_add(const struct lu_env *env,
796 struct dt_object *dt_obj,
797 const struct update_op *op,
798 const struct update_params *params,
799 struct thandle_exec_args *ta,
805 rc = out_tx_ref_add(env, dt_obj, ta, th, NULL, 0);
810 static int update_recovery_ref_del(const struct lu_env *env,
811 struct dt_object *dt_obj,
812 const struct update_op *op,
813 const struct update_params *params,
814 struct thandle_exec_args *ta,
820 rc = out_tx_ref_del(env, dt_obj, ta, th, NULL, 0);
825 static int update_recovery_attr_set(const struct lu_env *env,
826 struct dt_object *dt_obj,
827 const struct update_op *op,
828 const struct update_params *params,
829 struct thandle_exec_args *ta,
832 struct update_thread_info *uti = update_env_info(env);
833 struct llog_update_record *lur = uti->uti_dtrq->dtrq_lur;
835 struct obdo *lobdo = &uti->uti_obdo;
836 struct lu_attr *attr = &uti->uti_attr;
838 unsigned int param_count;
842 param_count = lur->lur_update_rec.ur_param_count;
843 wobdo = update_params_get_param_buf(params, op->uop_params_off[0],
847 if (size != sizeof(*wobdo))
850 if (LLOG_REC_HDR_NEEDS_SWABBING(&lur->lur_hdr))
851 lustre_swab_obdo(wobdo);
853 lustre_get_wire_obdo(NULL, lobdo, wobdo);
854 la_from_obdo(attr, lobdo, lobdo->o_valid);
856 rc = out_tx_attr_set(env, dt_obj, attr, ta, th, NULL, 0);
861 static int update_recovery_xattr_set(const struct lu_env *env,
862 struct dt_object *dt_obj,
863 const struct update_op *op,
864 const struct update_params *params,
865 struct thandle_exec_args *ta,
868 struct update_thread_info *uti = update_env_info(env);
877 param_count = uti->uti_dtrq->dtrq_lur->lur_update_rec.ur_param_count;
878 name = update_params_get_param_buf(params,
879 op->uop_params_off[0],
884 buf = update_params_get_param_buf(params,
885 op->uop_params_off[1],
890 uti->uti_buf.lb_buf = buf;
891 uti->uti_buf.lb_len = (size_t)size;
893 buf = update_params_get_param_buf(params, op->uop_params_off[2],
897 if (size != sizeof(fl))
900 fl = le32_to_cpu(*(int *)buf);
902 rc = out_tx_xattr_set(env, dt_obj, &uti->uti_buf, name, fl, ta, th,
908 static int update_recovery_index_insert(const struct lu_env *env,
909 struct dt_object *dt_obj,
910 const struct update_op *op,
911 const struct update_params *params,
912 struct thandle_exec_args *ta,
915 struct update_thread_info *uti = update_env_info(env);
925 param_count = uti->uti_dtrq->dtrq_lur->lur_update_rec.ur_param_count;
926 name = update_params_get_param_buf(params, op->uop_params_off[0],
931 fid = update_params_get_param_buf(params, op->uop_params_off[1],
935 if (size != sizeof(*fid))
938 fid_le_to_cpu(fid, fid);
940 ptype = update_params_get_param_buf(params, op->uop_params_off[2],
944 if (size != sizeof(*ptype))
946 type = le32_to_cpu(*ptype);
948 if (dt_try_as_dir(env, dt_obj) == 0)
951 uti->uti_rec.rec_fid = fid;
952 uti->uti_rec.rec_type = type;
954 rc = out_tx_index_insert(env, dt_obj,
955 (const struct dt_rec *)&uti->uti_rec,
956 (const struct dt_key *)name, ta, th,
962 static int update_recovery_index_delete(const struct lu_env *env,
963 struct dt_object *dt_obj,
964 const struct update_op *op,
965 const struct update_params *params,
966 struct thandle_exec_args *ta,
969 struct update_thread_info *uti = update_env_info(env);
976 param_count = uti->uti_dtrq->dtrq_lur->lur_update_rec.ur_param_count;
977 name = update_params_get_param_buf(params, op->uop_params_off[0],
982 if (dt_try_as_dir(env, dt_obj) == 0)
985 rc = out_tx_index_delete(env, dt_obj,
986 (const struct dt_key *)name, ta, th, NULL, 0);
991 static int update_recovery_write(const struct lu_env *env,
992 struct dt_object *dt_obj,
993 const struct update_op *op,
994 const struct update_params *params,
995 struct thandle_exec_args *ta,
998 struct update_thread_info *uti = update_env_info(env);
1006 param_count = uti->uti_dtrq->dtrq_lur->lur_update_rec.ur_param_count;
1007 buf = update_params_get_param_buf(params, op->uop_params_off[0],
1008 param_count, &size);
1012 uti->uti_buf.lb_buf = buf;
1013 uti->uti_buf.lb_len = size;
1015 buf = update_params_get_param_buf(params, op->uop_params_off[1],
1016 param_count, &size);
1020 pos = le64_to_cpu(*(__u64 *)buf);
1022 rc = out_tx_write(env, dt_obj, &uti->uti_buf, pos,
1028 static int update_recovery_xattr_del(const struct lu_env *env,
1029 struct dt_object *dt_obj,
1030 const struct update_op *op,
1031 const struct update_params *params,
1032 struct thandle_exec_args *ta,
1035 struct update_thread_info *uti = update_env_info(env);
1042 param_count = uti->uti_dtrq->dtrq_lur->lur_update_rec.ur_param_count;
1043 name = update_params_get_param_buf(params, op->uop_params_off[0],
1044 param_count, &size);
1048 rc = out_tx_xattr_del(env, dt_obj, name, ta, th, NULL, 0);
1054 * Update session information
1056 * Update session information so tgt_txn_stop_cb()->tgt_last_rcvd_update()
1057 * can be called correctly during update replay.
1059 * \param[in] env execution environment.
1060 * \param[in] tdtd distribute data structure of the recovering tgt.
1061 * \param[in] th thandle of this update replay.
1062 * \param[in] master_th master sub thandle.
1063 * \param[in] ta_arg the tx arg structure to hold the update for updating
1066 static void update_recovery_update_ses(struct lu_env *env,
1067 struct target_distribute_txn_data *tdtd,
1069 struct thandle *master_th,
1070 struct distribute_txn_replay_req *dtrq,
1071 struct tx_arg *ta_arg)
1073 struct tgt_session_info *tsi;
1074 struct lu_target *lut = tdtd->tdtd_lut;
1075 struct obd_export *export;
1076 struct cfs_hash *hash;
1077 struct top_thandle *top_th;
1078 struct lsd_reply_data *lrd;
1081 tsi = tgt_ses_info(env);
1082 if (tsi->tsi_exp != NULL)
1085 size = ta_arg->u.write.buf.lb_len;
1086 lrd = ta_arg->u.write.buf.lb_buf;
1087 if (size != sizeof(*lrd) || lrd == NULL)
1090 lrd->lrd_transno = le64_to_cpu(lrd->lrd_transno);
1091 lrd->lrd_xid = le64_to_cpu(lrd->lrd_xid);
1092 lrd->lrd_data = le64_to_cpu(lrd->lrd_data);
1093 lrd->lrd_result = le32_to_cpu(lrd->lrd_result);
1094 lrd->lrd_client_gen = le32_to_cpu(lrd->lrd_client_gen);
1096 if (lrd->lrd_transno != tgt_th_info(env)->tti_transno)
1099 hash = cfs_hash_getref(lut->lut_obd->obd_gen_hash);
1103 export = cfs_hash_lookup(hash, &lrd->lrd_client_gen);
1104 if (export == NULL) {
1105 cfs_hash_putref(hash);
1109 tsi->tsi_exp = export;
1110 tsi->tsi_xid = lrd->lrd_xid;
1111 tsi->tsi_opdata = lrd->lrd_data;
1112 tsi->tsi_result = lrd->lrd_result;
1113 tsi->tsi_client_gen = lrd->lrd_client_gen;
1114 dtrq->dtrq_xid = lrd->lrd_xid;
1115 top_th = container_of(th, struct top_thandle, tt_super);
1116 top_th->tt_master_sub_thandle = master_th;
1117 cfs_hash_putref(hash);
1121 * Execute updates in the update replay records
1123 * Declare distribute txn replay by update records and add the updates
1124 * to the execution list. Note: it will check if the update has been
1125 * committed, and only execute the updates if it is not committed to
1128 * \param[in] env execution environment
1129 * \param[in] tdtd distribute txn replay data which hold all of replay
1130 * reqs and all replay parameters.
1131 * \param[in] dtrq distribute transaction replay req.
1132 * \param[in] ta thandle execute args.
1134 * \retval 0 if declare succeeds.
1135 * \retval negative errno if declare fails.
1137 static int update_recovery_exec(const struct lu_env *env,
1138 struct target_distribute_txn_data *tdtd,
1139 struct distribute_txn_replay_req *dtrq,
1140 struct thandle_exec_args *ta)
1142 struct llog_update_record *lur = dtrq->dtrq_lur;
1143 struct update_records *records = &lur->lur_update_rec;
1144 struct update_ops *ops = &records->ur_ops;
1145 struct update_params *params = update_records_get_params(records);
1146 struct top_thandle *top_th = container_of(ta->ta_handle,
1149 struct top_multiple_thandle *tmt = top_th->tt_multiple_thandle;
1150 struct update_op *op;
1155 /* These records have been swabbed in llog_cat_process() */
1156 for (i = 0, op = &ops->uops_op[0]; i < records->ur_update_count;
1157 i++, op = update_op_next_op(op)) {
1158 struct lu_fid *fid = &op->uop_fid;
1159 struct dt_object *dt_obj;
1160 struct dt_object *sub_dt_obj;
1161 struct dt_device *sub_dt;
1162 struct sub_thandle *st;
1164 if (op->uop_type == OUT_NOOP)
1167 dt_obj = dt_locate(env, tdtd->tdtd_dt, fid);
1168 if (IS_ERR(dt_obj)) {
1169 rc = PTR_ERR(dt_obj);
1171 LCONSOLE_WARN("%.16s: hit invalid OI mapping "
1172 "for "DFID" during recovering, "
1173 "that may because auto scrub is "
1174 "disabled on related MDT, and "
1175 "will cause recovery failure. "
1176 "Please enable auto scrub and "
1177 "retry the recovery.\n",
1178 tdtd->tdtd_lut->lut_obd->obd_name,
1183 sub_dt_obj = dt_object_child(dt_obj);
1185 /* Create sub thandle if not */
1186 sub_dt = lu2dt_dev(sub_dt_obj->do_lu.lo_dev);
1187 st = lookup_sub_thandle(tmt, sub_dt);
1189 st = create_sub_thandle(tmt, sub_dt);
1191 GOTO(next, rc = PTR_ERR(st));
1194 /* check if updates on the OSD/OSP are committed */
1195 rc = update_is_committed(env, dtrq, dt_obj, top_th, st);
1197 /* If this is committed, goto next */
1203 /* Create thandle for sub thandle if needed */
1204 if (st->st_sub_th == NULL) {
1205 rc = sub_thandle_trans_create(env, top_th, st);
1210 CDEBUG(D_HA, "replay %uth update\n", i);
1211 switch (op->uop_type) {
1213 rc = update_recovery_create(env, sub_dt_obj,
1218 rc = update_recovery_destroy(env, sub_dt_obj,
1223 rc = update_recovery_ref_add(env, sub_dt_obj,
1228 rc = update_recovery_ref_del(env, sub_dt_obj,
1233 rc = update_recovery_attr_set(env, sub_dt_obj,
1238 rc = update_recovery_xattr_set(env, sub_dt_obj,
1242 case OUT_INDEX_INSERT:
1243 rc = update_recovery_index_insert(env, sub_dt_obj,
1247 case OUT_INDEX_DELETE:
1248 rc = update_recovery_index_delete(env, sub_dt_obj,
1253 rc = update_recovery_write(env, sub_dt_obj,
1258 rc = update_recovery_xattr_del(env, sub_dt_obj,
1263 CERROR("Unknown update type %u\n", (__u32)op->uop_type);
1268 dt_object_put(env, dt_obj);
1273 ta->ta_handle->th_result = rc;
1278 * redo updates on MDT if needed.
1280 * During DNE recovery, the recovery thread (target_recovery_thread) will call
1281 * this function to replay distribute txn updates on all MDTs. It only replay
1282 * updates on the MDT where the update record is missing.
1284 * If the update already exists on the MDT, then it does not need replay the
1285 * updates on that MDT, and only mark the sub transaction has been committed
1288 * \param[in] env execution environment
1289 * \param[in] tdtd target distribute txn data, which holds the replay list
1290 * and all parameters needed by replay process.
1291 * \param[in] dtrq distribute txn replay req.
1293 * \retval 0 if replay succeeds.
1294 * \retval negative errno if replay failes.
1296 int distribute_txn_replay_handle(struct lu_env *env,
1297 struct target_distribute_txn_data *tdtd,
1298 struct distribute_txn_replay_req *dtrq)
1300 struct update_records *records = &dtrq->dtrq_lur->lur_update_rec;
1301 struct thandle_exec_args *ta;
1302 struct lu_context session_env;
1303 struct thandle *th = NULL;
1304 struct top_thandle *top_th;
1305 struct top_multiple_thandle *tmt;
1306 struct thandle_update_records *tur = NULL;
1311 /* initialize session, it is needed for the handler of target */
1312 rc = lu_context_init(&session_env, LCT_SERVER_SESSION | LCT_NOREF);
1314 CERROR("%s: failure to initialize session: rc = %d\n",
1315 tdtd->tdtd_lut->lut_obd->obd_name, rc);
1318 lu_context_enter(&session_env);
1319 env->le_ses = &session_env;
1321 update_records_dump(records, D_HA, true);
1322 th = top_trans_create(env, NULL);
1324 GOTO(exit_session, rc = PTR_ERR(th));
1326 ta = &update_env_info(env)->uti_tea;
1329 update_env_info(env)->uti_dtrq = dtrq;
1330 /* Create distribute transaction structure for this top thandle */
1331 top_th = container_of(th, struct top_thandle, tt_super);
1332 rc = top_trans_create_tmt(env, top_th);
1334 GOTO(stop_trans, rc);
1336 th->th_dev = tdtd->tdtd_dt;
1339 /* check if the distribute transaction has been committed */
1340 tmt = top_th->tt_multiple_thandle;
1341 tmt->tmt_master_sub_dt = tdtd->tdtd_lut->lut_bottom;
1342 tmt->tmt_batchid = dtrq->dtrq_batchid;
1343 tgt_th_info(env)->tti_transno = dtrq->dtrq_master_transno;
1345 if (tmt->tmt_batchid <= tdtd->tdtd_committed_batchid)
1346 tmt->tmt_committed = 1;
1348 rc = update_recovery_exec(env, tdtd, dtrq, ta);
1350 GOTO(stop_trans, rc);
1352 /* If no updates are needed to be replayed, then mark this records as
1353 * committed, so commit thread distribute_txn_commit_thread() will
1354 * delete the record */
1355 if (ta->ta_argno == 0)
1356 tmt->tmt_committed = 1;
1358 tur = &update_env_info(env)->uti_tur;
1359 tur->tur_update_records = dtrq->dtrq_lur;
1360 tur->tur_update_records_buf_size = dtrq->dtrq_lur_size;
1361 tur->tur_update_params = NULL;
1362 tur->tur_update_param_count = 0;
1363 tmt->tmt_update_records = tur;
1365 distribute_txn_insert_by_batchid(tmt);
1366 rc = top_trans_start(env, NULL, th);
1368 GOTO(stop_trans, rc);
1370 for (i = 0; i < ta->ta_argno; i++) {
1371 struct tx_arg *ta_arg;
1372 struct dt_object *dt_obj;
1373 struct dt_device *sub_dt;
1374 struct sub_thandle *st;
1376 ta_arg = ta->ta_args[i];
1377 dt_obj = ta_arg->object;
1379 LASSERT(tmt->tmt_committed == 0);
1380 sub_dt = lu2dt_dev(dt_obj->do_lu.lo_dev);
1381 st = lookup_sub_thandle(tmt, sub_dt);
1383 LASSERT(st != NULL);
1384 LASSERT(st->st_sub_th != NULL);
1385 rc = ta->ta_args[i]->exec_fn(env, st->st_sub_th,
1388 /* If the update is to update the reply data, then
1389 * we need set the session information, so
1390 * tgt_last_rcvd_update() can be called correctly */
1391 if (rc == 0 && dt_obj == tdtd->tdtd_lut->lut_reply_data)
1392 update_recovery_update_ses(env, tdtd, th,
1393 st->st_sub_th, dtrq, ta_arg);
1395 if (unlikely(rc < 0)) {
1396 CDEBUG(D_HA, "error during execution of #%u from"
1397 " %s:%d: rc = %d\n", i, ta->ta_args[i]->file,
1398 ta->ta_args[i]->line, rc);
1400 if (ta->ta_args[i]->undo_fn != NULL) {
1401 dt_obj = ta->ta_args[i]->object;
1403 lu2dt_dev(dt_obj->do_lu.lo_dev);
1404 st = lookup_sub_thandle(tmt, sub_dt);
1405 LASSERT(st != NULL);
1406 LASSERT(st->st_sub_th != NULL);
1408 ta->ta_args[i]->undo_fn(env,
1412 CERROR("%s: undo for %s:%d: rc = %d\n",
1413 dt_obd_name(ta->ta_handle->th_dev),
1414 ta->ta_args[i]->file,
1415 ta->ta_args[i]->line, -ENOTSUPP);
1420 CDEBUG(D_HA, "%s: executed %u/%u: rc = %d\n",
1421 dt_obd_name(sub_dt), i, ta->ta_argno, rc);
1427 rc = top_trans_stop(env, tdtd->tdtd_dt, th);
1428 for (i = 0; i < ta->ta_argno; i++) {
1429 if (ta->ta_args[i]->object != NULL) {
1430 dt_object_put(env, ta->ta_args[i]->object);
1431 ta->ta_args[i]->object = NULL;
1436 tur->tur_update_records = NULL;
1438 if (tgt_ses_info(env)->tsi_exp != NULL) {
1439 class_export_put(tgt_ses_info(env)->tsi_exp);
1440 tgt_ses_info(env)->tsi_exp = NULL;
1443 lu_context_exit(&session_env);
1444 lu_context_fini(&session_env);
1447 EXPORT_SYMBOL(distribute_txn_replay_handle);