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) 2014, 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 <md_object.h>
48 #include <lustre_update.h>
50 #include <obd_class.h>
51 #include "tgt_internal.h"
54 * Lookup distribute_txn_replay req
56 * Lookup distribute_txn_replay in the replay list by batchid.
57 * It is assumed the list has been locked before calling this function.
59 * \param[in] tdtd distribute_txn_data, which holds the replay
61 * \param[in] batchid batchid used by lookup.
63 * \retval pointer of the replay if succeeds.
64 * \retval NULL if can not find it.
66 static struct distribute_txn_replay_req *
67 dtrq_lookup(struct target_distribute_txn_data *tdtd, __u64 batchid)
69 struct distribute_txn_replay_req *tmp;
70 struct distribute_txn_replay_req *dtrq = NULL;
72 list_for_each_entry(tmp, &tdtd->tdtd_replay_list, dtrq_list) {
73 if (tmp->dtrq_lur->lur_update_rec.ur_batchid == batchid) {
82 * insert distribute txn replay req
84 * Insert distribute txn replay to the replay list, and it assumes the
85 * list has been looked. Note: the replay list is a sorted list, which
86 * is sorted by master transno. It is assumed the replay list has been
87 * locked before calling this function.
89 * \param[in] tdtd target distribute txn data where replay list is
90 * \param[in] new distribute txn replay to be inserted
92 * \retval 0 if insertion succeeds
93 * \retval EEXIST if the dtrq already exists
95 static int dtrq_insert(struct target_distribute_txn_data *tdtd,
96 struct distribute_txn_replay_req *new)
98 struct distribute_txn_replay_req *iter;
100 list_for_each_entry_reverse(iter, &tdtd->tdtd_replay_list, dtrq_list) {
101 if (iter->dtrq_lur->lur_update_rec.ur_master_transno >
102 new->dtrq_lur->lur_update_rec.ur_master_transno)
105 /* If there are mulitple replay req with same transno, then
106 * sort them with batchid */
107 if (iter->dtrq_lur->lur_update_rec.ur_master_transno ==
108 new->dtrq_lur->lur_update_rec.ur_master_transno &&
109 iter->dtrq_lur->lur_update_rec.ur_batchid ==
110 new->dtrq_lur->lur_update_rec.ur_batchid)
113 /* If there are mulitple replay req with same transno, then
114 * sort them with batchid */
115 if (iter->dtrq_lur->lur_update_rec.ur_master_transno ==
116 new->dtrq_lur->lur_update_rec.ur_master_transno &&
117 iter->dtrq_lur->lur_update_rec.ur_batchid >
118 new->dtrq_lur->lur_update_rec.ur_batchid)
121 list_add(&new->dtrq_list, &iter->dtrq_list);
125 if (list_empty(&new->dtrq_list))
126 list_add(&new->dtrq_list, &tdtd->tdtd_replay_list);
132 * create distribute txn replay req
134 * Allocate distribute txn replay req according to the update records.
136 * \param[in] tdtd target distribute txn data where replay list is.
137 * \param[in] record update records from the update log.
139 * \retval the pointer of distribute txn replay req if
140 * the creation succeeds.
141 * \retval NULL if the creation fails.
143 static struct distribute_txn_replay_req *
144 dtrq_create(struct llog_update_record *lur)
146 struct distribute_txn_replay_req *new;
150 RETURN(ERR_PTR(-ENOMEM));
152 new->dtrq_lur_size = llog_update_record_size(lur);
153 OBD_ALLOC_LARGE(new->dtrq_lur, new->dtrq_lur_size);
154 if (new->dtrq_lur == NULL) {
156 RETURN(ERR_PTR(-ENOMEM));
159 memcpy(new->dtrq_lur, lur, new->dtrq_lur_size);
161 spin_lock_init(&new->dtrq_sub_list_lock);
162 INIT_LIST_HEAD(&new->dtrq_sub_list);
163 INIT_LIST_HEAD(&new->dtrq_list);
169 * Lookup distribute sub replay
171 * Lookup distribute sub replay in the sub list of distribute_txn_replay by
174 * \param[in] distribute_txn_replay_req the distribute txn replay req to lookup
175 * \param[in] mdt_index the mdt_index as the key of lookup
177 * \retval the pointer of sub replay if it can be found.
178 * \retval NULL if it can not find.
180 struct distribute_txn_replay_req_sub *
181 dtrq_sub_lookup(struct distribute_txn_replay_req *dtrq, __u32 mdt_index)
183 struct distribute_txn_replay_req_sub *dtrqs = NULL;
184 struct distribute_txn_replay_req_sub *tmp;
186 list_for_each_entry(tmp, &dtrq->dtrq_sub_list, dtrqs_list) {
187 if (tmp->dtrqs_mdt_index == mdt_index) {
196 * Try to add cookie to sub distribute txn request
198 * Check if the update log cookie has been added to the request, if not,
199 * add it to the dtrqs_cookie_list.
201 * \param[in] dtrqs sub replay req where cookies to be added.
202 * \param[in] cookie cookie to be added.
204 * \retval 0 if the cookie is adding succeeds.
205 * \retval negative errno if adding fails.
207 static int dtrq_sub_add_cookie(struct distribute_txn_replay_req_sub *dtrqs,
208 struct llog_cookie *cookie)
210 struct sub_thandle_cookie *new;
216 INIT_LIST_HEAD(&new->stc_list);
217 new->stc_cookie = *cookie;
218 /* Note: only single thread will access one sub_request each time,
219 * so no need lock here */
220 list_add(&new->stc_list, &dtrqs->dtrqs_cookie_list);
226 * Insert distribute txn sub req replay
228 * Allocate sub replay req and insert distribute txn replay list.
230 * \param[in] dtrq d to be added
231 * \param[in] cookie the cookie of the update record
232 * \param[in] mdt_index the mdt_index of the update record
234 * \retval 0 if the adding succeeds.
235 * \retval negative errno if the adding fails.
238 dtrq_sub_create_and_insert(struct distribute_txn_replay_req *dtrq,
239 struct llog_cookie *cookie,
242 struct distribute_txn_replay_req_sub *dtrqs = NULL;
243 struct distribute_txn_replay_req_sub *new;
247 spin_lock(&dtrq->dtrq_sub_list_lock);
248 dtrqs = dtrq_sub_lookup(dtrq, mdt_index);
249 spin_unlock(&dtrq->dtrq_sub_list_lock);
251 rc = dtrq_sub_add_cookie(dtrqs, cookie);
259 INIT_LIST_HEAD(&new->dtrqs_list);
260 INIT_LIST_HEAD(&new->dtrqs_cookie_list);
261 new->dtrqs_mdt_index = mdt_index;
262 spin_lock(&dtrq->dtrq_sub_list_lock);
263 dtrqs = dtrq_sub_lookup(dtrq, mdt_index);
265 list_add(&new->dtrqs_list, &dtrq->dtrq_sub_list);
270 spin_unlock(&dtrq->dtrq_sub_list_lock);
272 rc = dtrq_sub_add_cookie(dtrqs, cookie);
278 * append updates to the current replay updates
280 * Append more updates to the existent replay update. And this is only
281 * used when combining mulitple updates into one large updates during
284 * \param[in] dtrq the update replay request where the new update
285 * records will be added.
286 * \param[in] lur the new update record.
288 * \retval 0 if appending succeeds.
289 * \retval negative errno if appending fails.
291 static int dtrq_append_updates(struct distribute_txn_replay_req *dtrq,
292 struct update_records *record)
294 struct llog_update_record *new_lur;
295 size_t lur_size = dtrq->dtrq_lur_size;
299 /* Because several threads might retrieve the same records from
300 * different targets, and we only need one copy of records. So
301 * we will check if the records is in the next one, if not, just
303 spin_lock(&dtrq->dtrq_sub_list_lock);
304 if (dtrq->dtrq_lur->lur_update_rec.ur_index + 1 != record->ur_index) {
305 spin_unlock(&dtrq->dtrq_sub_list_lock);
308 dtrq->dtrq_lur->lur_update_rec.ur_index++;
309 spin_unlock(&dtrq->dtrq_sub_list_lock);
311 lur_size += update_records_size(record);
312 OBD_ALLOC_LARGE(new_lur, lur_size);
313 if (new_lur == NULL) {
314 spin_lock(&dtrq->dtrq_sub_list_lock);
315 dtrq->dtrq_lur->lur_update_rec.ur_index--;
316 spin_unlock(&dtrq->dtrq_sub_list_lock);
320 /* Copy the old and new records to the new allocated buffer */
321 memcpy(new_lur, dtrq->dtrq_lur, dtrq->dtrq_lur_size);
322 ptr = (char *)&new_lur->lur_update_rec +
323 update_records_size(&new_lur->lur_update_rec);
324 memcpy(ptr, &record->ur_ops,
325 update_records_size(record) -
326 offsetof(struct update_records, ur_ops));
328 new_lur->lur_update_rec.ur_update_count += record->ur_update_count;
329 new_lur->lur_update_rec.ur_param_count += record->ur_param_count;
330 new_lur->lur_hdr.lrh_len = llog_update_record_size(new_lur);
332 /* Replace the records */
333 OBD_FREE_LARGE(dtrq->dtrq_lur, dtrq->dtrq_lur_size);
334 dtrq->dtrq_lur = new_lur;
335 dtrq->dtrq_lur_size = lur_size;
336 dtrq->dtrq_lur->lur_update_rec.ur_flags = record->ur_flags;
337 update_records_dump(&new_lur->lur_update_rec, D_INFO, true);
342 * Insert update records to the replay list.
344 * Allocate distribute txn replay req and insert it into the replay
345 * list, then insert the update records into the replay req.
347 * \param[in] tdtd distribute txn replay data where the replay list
349 * \param[in] record the update record
350 * \param[in] cookie cookie of the record
351 * \param[in] index mdt index of the record
353 * \retval 0 if the adding succeeds.
354 * \retval negative errno if the adding fails.
357 insert_update_records_to_replay_list(struct target_distribute_txn_data *tdtd,
358 struct llog_update_record *lur,
359 struct llog_cookie *cookie,
362 struct distribute_txn_replay_req *dtrq;
363 struct update_records *record = &lur->lur_update_rec;
367 CDEBUG(D_HA, "%s: insert record batchid = "LPU64" transno = "LPU64
368 " mdt_index %u\n", tdtd->tdtd_lut->lut_obd->obd_name,
369 record->ur_batchid, record->ur_master_transno, mdt_index);
371 /* First try to build the replay update request with the records */
372 spin_lock(&tdtd->tdtd_replay_list_lock);
373 dtrq = dtrq_lookup(tdtd, record->ur_batchid);
374 spin_unlock(&tdtd->tdtd_replay_list_lock);
376 /* If the transno in the update record is 0, it means the
377 * update are from master MDT, and we will use the master
378 * last committed transno as its batchid. Note: if it got
379 * the records from the slave later, it needs to update
380 * the batchid by the transno in slave update log (see below) */
381 dtrq = dtrq_create(lur);
383 RETURN(PTR_ERR(dtrq));
385 if (record->ur_master_transno == 0)
386 dtrq->dtrq_lur->lur_update_rec.ur_master_transno =
387 tdtd->tdtd_lut->lut_last_transno;
388 spin_lock(&tdtd->tdtd_replay_list_lock);
389 rc = dtrq_insert(tdtd, dtrq);
390 spin_unlock(&tdtd->tdtd_replay_list_lock);
392 /* Some one else already add the record */
397 struct update_records *dtrq_rec;
399 /* If the master transno in update header is not
400 * matched with the one in the record, then it means
401 * the dtrq is originally created by master record,
402 * and we need update master transno and reposition
403 * the dtrq(by master transno). */
404 dtrq_rec = &dtrq->dtrq_lur->lur_update_rec;
405 if (record->ur_master_transno != 0 &&
406 dtrq_rec->ur_master_transno != record->ur_master_transno) {
407 dtrq_rec->ur_master_transno = record->ur_master_transno;
408 spin_lock(&tdtd->tdtd_replay_list_lock);
409 list_del_init(&dtrq->dtrq_list);
410 rc = dtrq_insert(tdtd, dtrq);
411 spin_unlock(&tdtd->tdtd_replay_list_lock);
416 /* This is a partial update records, let's try to append
417 * the record to the current replay request */
418 if (record->ur_flags & UPDATE_RECORD_CONTINUE)
419 rc = dtrq_append_updates(dtrq, record);
422 /* Then create and add sub update request */
423 rc = dtrq_sub_create_and_insert(dtrq, cookie, mdt_index);
427 EXPORT_SYMBOL(insert_update_records_to_replay_list);
430 * Dump updates of distribute txns.
432 * Output all of recovery updates in the distribute txn list to the
435 * \param[in] tdtd distribute txn data where all of distribute txn
437 * \param[in] mask debug mask
439 void dtrq_list_dump(struct target_distribute_txn_data *tdtd, unsigned int mask)
441 struct distribute_txn_replay_req *dtrq;
443 spin_lock(&tdtd->tdtd_replay_list_lock);
444 list_for_each_entry(dtrq, &tdtd->tdtd_replay_list, dtrq_list)
445 update_records_dump(&dtrq->dtrq_lur->lur_update_rec, mask,
447 spin_unlock(&tdtd->tdtd_replay_list_lock);
449 EXPORT_SYMBOL(dtrq_list_dump);
452 * Destroy distribute txn replay req
454 * Destroy distribute txn replay req and all of subs.
456 * \param[in] dtrq distribute txn replqy req to be destroyed.
458 void dtrq_destroy(struct distribute_txn_replay_req *dtrq)
460 struct distribute_txn_replay_req_sub *dtrqs;
461 struct distribute_txn_replay_req_sub *tmp;
463 LASSERT(list_empty(&dtrq->dtrq_list));
464 spin_lock(&dtrq->dtrq_sub_list_lock);
465 list_for_each_entry_safe(dtrqs, tmp, &dtrq->dtrq_sub_list, dtrqs_list) {
466 struct sub_thandle_cookie *stc;
467 struct sub_thandle_cookie *tmp;
469 list_del(&dtrqs->dtrqs_list);
470 list_for_each_entry_safe(stc, tmp, &dtrqs->dtrqs_cookie_list,
472 list_del(&stc->stc_list);
477 spin_unlock(&dtrq->dtrq_sub_list_lock);
479 if (dtrq->dtrq_lur != NULL)
480 OBD_FREE_LARGE(dtrq->dtrq_lur, dtrq->dtrq_lur_size);
484 EXPORT_SYMBOL(dtrq_destroy);
487 * Destroy all of replay req.
489 * Destroy all of replay req in the replay list.
491 * \param[in] tdtd target distribute txn data where the replay list is.
493 void dtrq_list_destroy(struct target_distribute_txn_data *tdtd)
495 struct distribute_txn_replay_req *dtrq;
496 struct distribute_txn_replay_req *tmp;
498 spin_lock(&tdtd->tdtd_replay_list_lock);
499 list_for_each_entry_safe(dtrq, tmp, &tdtd->tdtd_replay_list,
501 list_del_init(&dtrq->dtrq_list);
504 spin_unlock(&tdtd->tdtd_replay_list_lock);
506 EXPORT_SYMBOL(dtrq_list_destroy);
509 * Get next req in the replay list
511 * Get next req needs to be replayed, since it is a sorted list
512 * (by master MDT transno)
514 * \param[in] tdtd distribute txn data where the replay list is
516 * \retval the pointer of update recovery header
518 struct distribute_txn_replay_req *
519 distribute_txn_get_next_req(struct target_distribute_txn_data *tdtd)
521 struct distribute_txn_replay_req *dtrq = NULL;
523 spin_lock(&tdtd->tdtd_replay_list_lock);
524 if (!list_empty(&tdtd->tdtd_replay_list)) {
525 dtrq = list_entry(tdtd->tdtd_replay_list.next,
526 struct distribute_txn_replay_req, dtrq_list);
527 list_del_init(&dtrq->dtrq_list);
529 spin_unlock(&tdtd->tdtd_replay_list_lock);
533 EXPORT_SYMBOL(distribute_txn_get_next_req);
536 * Get next transno in the replay list, because this is the sorted
537 * list, so it will return the transno of next req in the list.
539 * \param[in] tdtd distribute txn data where the replay list is
541 * \retval the transno of next update in the list
543 __u64 distribute_txn_get_next_transno(struct target_distribute_txn_data *tdtd)
545 struct distribute_txn_replay_req *dtrq = NULL;
548 spin_lock(&tdtd->tdtd_replay_list_lock);
549 if (!list_empty(&tdtd->tdtd_replay_list)) {
550 dtrq = list_entry(tdtd->tdtd_replay_list.next,
551 struct distribute_txn_replay_req, dtrq_list);
552 transno = dtrq->dtrq_lur->lur_update_rec.ur_master_transno;
554 spin_unlock(&tdtd->tdtd_replay_list_lock);
556 CDEBUG(D_HA, "%s: Next update transno "LPU64"\n",
557 tdtd->tdtd_lut->lut_obd->obd_name, transno);
560 EXPORT_SYMBOL(distribute_txn_get_next_transno);
563 * Check if the update of one object is committed
565 * Check whether the update for the object is committed by checking whether
566 * the correspondent sub exists in the replay req. If it is committed, mark
567 * the committed flag in correspondent the sub thandle.
569 * \param[in] env execution environment
570 * \param[in] dtrq replay request
571 * \param[in] dt_obj object for the update
572 * \param[in] top_th top thandle
573 * \param[in] sub_th sub thandle which the update belongs to
575 * \retval 1 if the update is not committed.
576 * \retval 0 if the update is committed.
577 * \retval negative errno if some other failures happen.
579 static int update_is_committed(const struct lu_env *env,
580 struct distribute_txn_replay_req *dtrq,
581 struct dt_object *dt_obj,
582 struct top_thandle *top_th,
583 struct sub_thandle *st)
585 struct seq_server_site *seq_site;
586 const struct lu_fid *fid = lu_object_fid(&dt_obj->do_lu);
587 struct distribute_txn_replay_req_sub *dtrqs;
591 if (st->st_sub_th != NULL)
594 if (st->st_committed)
597 seq_site = lu_site2seq(dt_obj->do_lu.lo_dev->ld_site);
598 if (fid_is_update_log(fid) || fid_is_update_log_dir(fid)) {
599 mdt_index = fid_oid(fid);
600 } else if (!fid_seq_in_fldb(fid_seq(fid))) {
601 mdt_index = seq_site->ss_node_id;
603 struct lu_server_fld *fld;
604 struct lu_seq_range range = {0};
607 fld = seq_site->ss_server_fld;
608 fld_range_set_type(&range, LU_SEQ_RANGE_MDT);
609 LASSERT(fld->lsf_seq_lookup != NULL);
610 rc = fld->lsf_seq_lookup(env, fld, fid_seq(fid),
614 mdt_index = range.lsr_index;
617 dtrqs = dtrq_sub_lookup(dtrq, mdt_index);
618 if (dtrqs != NULL || top_th->tt_multiple_thandle->tmt_committed) {
619 st->st_committed = 1;
621 struct sub_thandle_cookie *stc;
622 struct sub_thandle_cookie *tmp;
624 list_for_each_entry_safe(stc, tmp,
625 &dtrqs->dtrqs_cookie_list,
627 list_move(&stc->stc_list, &st->st_cookie_list);
632 CDEBUG(D_HA, "Update of "DFID "on MDT%u is not committed\n", PFID(fid),
639 * Implementation of different update methods for update recovery.
641 * These following functions update_recovery_$(update_name) implement
642 * different updates recovery methods. They will extract the parameters
643 * from the common parameters area and call correspondent dt API to redo
646 * \param[in] env execution environment
647 * \param[in] op update operation to be replayed
648 * \param[in] params common update parameters which holds all parameters
650 * \param[in] th transaction handle
651 * \param[in] declare indicate it will do declare or real execution, true
652 * means declare, false means real execution
654 * \retval 0 if it succeeds.
655 * \retval negative errno if it fails.
657 static int update_recovery_create(const struct lu_env *env,
658 struct dt_object *dt_obj,
659 const struct update_op *op,
660 const struct update_params *params,
661 struct thandle_exec_args *ta,
664 struct update_thread_info *uti = update_env_info(env);
665 struct llog_update_record *lur = uti->uti_dtrq->dtrq_lur;
666 struct lu_attr *attr = &uti->uti_attr;
668 struct obdo *lobdo = &uti->uti_obdo;
669 struct dt_object_format dof;
671 unsigned int param_count;
675 if (dt_object_exists(dt_obj))
678 param_count = lur->lur_update_rec.ur_param_count;
679 wobdo = update_params_get_param_buf(params, op->uop_params_off[0],
683 if (size != sizeof(*wobdo))
686 if (LLOG_REC_HDR_NEEDS_SWABBING(&lur->lur_hdr))
687 lustre_swab_obdo(wobdo);
689 lustre_get_wire_obdo(NULL, lobdo, wobdo);
690 la_from_obdo(attr, lobdo, lobdo->o_valid);
692 dof.dof_type = dt_mode_to_dft(attr->la_mode);
694 rc = out_tx_create(env, dt_obj, attr, NULL, &dof,
700 static int update_recovery_destroy(const struct lu_env *env,
701 struct dt_object *dt_obj,
702 const struct update_op *op,
703 const struct update_params *params,
704 struct thandle_exec_args *ta,
710 rc = out_tx_destroy(env, dt_obj, ta, th, NULL, 0);
715 static int update_recovery_ref_add(const struct lu_env *env,
716 struct dt_object *dt_obj,
717 const struct update_op *op,
718 const struct update_params *params,
719 struct thandle_exec_args *ta,
725 rc = out_tx_ref_add(env, dt_obj, ta, th, NULL, 0);
730 static int update_recovery_ref_del(const struct lu_env *env,
731 struct dt_object *dt_obj,
732 const struct update_op *op,
733 const struct update_params *params,
734 struct thandle_exec_args *ta,
740 rc = out_tx_ref_del(env, dt_obj, ta, th, NULL, 0);
745 static int update_recovery_attr_set(const struct lu_env *env,
746 struct dt_object *dt_obj,
747 const struct update_op *op,
748 const struct update_params *params,
749 struct thandle_exec_args *ta,
752 struct update_thread_info *uti = update_env_info(env);
753 struct llog_update_record *lur = uti->uti_dtrq->dtrq_lur;
755 struct obdo *lobdo = &uti->uti_obdo;
756 struct lu_attr *attr = &uti->uti_attr;
758 unsigned int param_count;
762 param_count = lur->lur_update_rec.ur_param_count;
763 wobdo = update_params_get_param_buf(params, op->uop_params_off[0],
767 if (size != sizeof(*wobdo))
770 if (LLOG_REC_HDR_NEEDS_SWABBING(&lur->lur_hdr))
771 lustre_swab_obdo(wobdo);
773 lustre_get_wire_obdo(NULL, lobdo, wobdo);
774 la_from_obdo(attr, lobdo, lobdo->o_valid);
776 rc = out_tx_attr_set(env, dt_obj, attr, ta, th, NULL, 0);
781 static int update_recovery_xattr_set(const struct lu_env *env,
782 struct dt_object *dt_obj,
783 const struct update_op *op,
784 const struct update_params *params,
785 struct thandle_exec_args *ta,
788 struct update_thread_info *uti = update_env_info(env);
797 param_count = uti->uti_dtrq->dtrq_lur->lur_update_rec.ur_param_count;
798 name = update_params_get_param_buf(params,
799 op->uop_params_off[0],
804 buf = update_params_get_param_buf(params,
805 op->uop_params_off[1],
810 uti->uti_buf.lb_buf = buf;
811 uti->uti_buf.lb_len = (size_t)size;
813 buf = update_params_get_param_buf(params, op->uop_params_off[2],
817 if (size != sizeof(fl))
820 fl = le32_to_cpu(*(int *)buf);
822 rc = out_tx_xattr_set(env, dt_obj, &uti->uti_buf, name, fl, ta, th,
828 static int update_recovery_index_insert(const struct lu_env *env,
829 struct dt_object *dt_obj,
830 const struct update_op *op,
831 const struct update_params *params,
832 struct thandle_exec_args *ta,
835 struct update_thread_info *uti = update_env_info(env);
845 param_count = uti->uti_dtrq->dtrq_lur->lur_update_rec.ur_param_count;
846 name = update_params_get_param_buf(params, op->uop_params_off[0],
851 fid = update_params_get_param_buf(params, op->uop_params_off[1],
855 if (size != sizeof(*fid))
858 fid_le_to_cpu(fid, fid);
860 ptype = update_params_get_param_buf(params, op->uop_params_off[2],
864 if (size != sizeof(*ptype))
866 type = le32_to_cpu(*ptype);
868 if (dt_try_as_dir(env, dt_obj) == 0)
871 uti->uti_rec.rec_fid = fid;
872 uti->uti_rec.rec_type = type;
874 rc = out_tx_index_insert(env, dt_obj,
875 (const struct dt_rec *)&uti->uti_rec,
876 (const struct dt_key *)name, ta, th,
882 static int update_recovery_index_delete(const struct lu_env *env,
883 struct dt_object *dt_obj,
884 const struct update_op *op,
885 const struct update_params *params,
886 struct thandle_exec_args *ta,
889 struct update_thread_info *uti = update_env_info(env);
896 param_count = uti->uti_dtrq->dtrq_lur->lur_update_rec.ur_param_count;
897 name = update_params_get_param_buf(params, op->uop_params_off[0],
902 if (dt_try_as_dir(env, dt_obj) == 0)
905 rc = out_tx_index_delete(env, dt_obj,
906 (const struct dt_key *)name, ta, th, NULL, 0);
911 static int update_recovery_write(const struct lu_env *env,
912 struct dt_object *dt_obj,
913 const struct update_op *op,
914 const struct update_params *params,
915 struct thandle_exec_args *ta,
918 struct update_thread_info *uti = update_env_info(env);
926 param_count = uti->uti_dtrq->dtrq_lur->lur_update_rec.ur_param_count;
927 buf = update_params_get_param_buf(params, op->uop_params_off[0],
932 uti->uti_buf.lb_buf = buf;
933 uti->uti_buf.lb_len = size;
935 buf = update_params_get_param_buf(params, op->uop_params_off[1],
940 pos = le64_to_cpu(*(__u64 *)buf);
942 rc = out_tx_write(env, dt_obj, &uti->uti_buf, pos,
948 static int update_recovery_xattr_del(const struct lu_env *env,
949 struct dt_object *dt_obj,
950 const struct update_op *op,
951 const struct update_params *params,
952 struct thandle_exec_args *ta,
955 struct update_thread_info *uti = update_env_info(env);
962 param_count = uti->uti_dtrq->dtrq_lur->lur_update_rec.ur_param_count;
963 name = update_params_get_param_buf(params, op->uop_params_off[0],
968 rc = out_tx_xattr_del(env, dt_obj, name, ta, th, NULL, 0);
974 * Execute updates in the update replay records
976 * Declare distribute txn replay by update records and add the updates
977 * to the execution list. Note: it will check if the update has been
978 * committed, and only execute the updates if it is not committed to
981 * \param[in] env execution environment
982 * \param[in] tdtd distribute txn replay data which hold all of replay
983 * reqs and all replay parameters.
984 * \param[in] dtrq distribute transaction replay req.
985 * \param[in] ta thandle execute args.
987 * \retval 0 if declare succeeds.
988 * \retval negative errno if declare fails.
990 static int update_recovery_exec(const struct lu_env *env,
991 struct target_distribute_txn_data *tdtd,
992 struct distribute_txn_replay_req *dtrq,
993 struct thandle_exec_args *ta)
995 struct llog_update_record *lur = dtrq->dtrq_lur;
996 struct update_records *records = &lur->lur_update_rec;
997 struct update_ops *ops = &records->ur_ops;
998 struct update_params *params = update_records_get_params(records);
999 struct top_thandle *top_th = container_of(ta->ta_handle,
1002 struct top_multiple_thandle *tmt = top_th->tt_multiple_thandle;
1003 struct update_op *op;
1008 /* These records have been swabbed in llog_cat_process() */
1009 for (i = 0, op = &ops->uops_op[0]; i < records->ur_update_count;
1010 i++, op = update_op_next_op(op)) {
1011 struct lu_fid *fid = &op->uop_fid;
1012 struct dt_object *dt_obj;
1013 struct dt_object *sub_dt_obj;
1014 struct dt_device *sub_dt;
1015 struct sub_thandle *st;
1017 if (op->uop_type == OUT_NOOP)
1020 dt_obj = dt_locate(env, tdtd->tdtd_dt, fid);
1021 if (IS_ERR(dt_obj)) {
1022 rc = PTR_ERR(dt_obj);
1025 sub_dt_obj = dt_object_child(dt_obj);
1027 /* Create sub thandle if not */
1028 sub_dt = lu2dt_dev(sub_dt_obj->do_lu.lo_dev);
1029 st = lookup_sub_thandle(tmt, sub_dt);
1031 st = create_sub_thandle(tmt, sub_dt);
1033 GOTO(next, rc = PTR_ERR(st));
1036 /* check if updates on the OSD/OSP are committed */
1037 rc = update_is_committed(env, dtrq, dt_obj, top_th, st);
1039 /* If this is committed, goto next */
1045 /* Create thandle for sub thandle if needed */
1046 if (st->st_sub_th == NULL) {
1047 rc = sub_thandle_trans_create(env, top_th, st);
1052 CDEBUG(D_HA, "replay %uth update\n", i);
1053 switch (op->uop_type) {
1055 rc = update_recovery_create(env, sub_dt_obj,
1060 rc = update_recovery_destroy(env, sub_dt_obj,
1065 rc = update_recovery_ref_add(env, sub_dt_obj,
1070 rc = update_recovery_ref_del(env, sub_dt_obj,
1075 rc = update_recovery_attr_set(env, sub_dt_obj,
1080 rc = update_recovery_xattr_set(env, sub_dt_obj,
1084 case OUT_INDEX_INSERT:
1085 rc = update_recovery_index_insert(env, sub_dt_obj,
1089 case OUT_INDEX_DELETE:
1090 rc = update_recovery_index_delete(env, sub_dt_obj,
1095 rc = update_recovery_write(env, sub_dt_obj,
1100 rc = update_recovery_xattr_del(env, sub_dt_obj,
1105 CERROR("Unknown update type %u\n", (__u32)op->uop_type);
1110 lu_object_put(env, &dt_obj->do_lu);
1115 ta->ta_handle->th_result = rc;
1120 * redo updates on MDT if needed.
1122 * During DNE recovery, the recovery thread (target_recovery_thread) will call
1123 * this function to replay distribute txn updates on all MDTs. It only replay
1124 * updates on the MDT where the update record is missing.
1126 * If the update already exists on the MDT, then it does not need replay the
1127 * updates on that MDT, and only mark the sub transaction has been committed
1130 * \param[in] env execution environment
1131 * \param[in] tdtd target distribute txn data, which holds the replay list
1132 * and all parameters needed by replay process.
1133 * \param[in] dtrq distribute txn replay req.
1135 * \retval 0 if replay succeeds.
1136 * \retval negative errno if replay failes.
1138 int distribute_txn_replay_handle(struct lu_env *env,
1139 struct target_distribute_txn_data *tdtd,
1140 struct distribute_txn_replay_req *dtrq)
1142 struct update_records *records = &dtrq->dtrq_lur->lur_update_rec;
1143 struct thandle_exec_args *ta;
1144 struct lu_context session_env;
1145 struct thandle *th = NULL;
1146 struct top_thandle *top_th;
1147 struct top_multiple_thandle *tmt;
1148 struct thandle_update_records *tur = NULL;
1153 /* initialize session, it is needed for the handler of target */
1154 rc = lu_context_init(&session_env, LCT_SERVER_SESSION | LCT_NOREF);
1156 CERROR("%s: failure to initialize session: rc = %d\n",
1157 tdtd->tdtd_lut->lut_obd->obd_name, rc);
1160 lu_context_enter(&session_env);
1161 env->le_ses = &session_env;
1163 update_records_dump(records, D_HA, true);
1164 th = top_trans_create(env, NULL);
1166 GOTO(exit_session, rc = PTR_ERR(th));
1168 ta = &update_env_info(env)->uti_tea;
1171 update_env_info(env)->uti_dtrq = dtrq;
1172 /* Create distribute transaction structure for this top thandle */
1173 top_th = container_of(th, struct top_thandle, tt_super);
1174 rc = top_trans_create_tmt(env, top_th);
1176 GOTO(stop_trans, rc);
1180 /* check if the distribute transaction has been committed */
1181 tmt = top_th->tt_multiple_thandle;
1182 tmt->tmt_master_sub_dt = tdtd->tdtd_lut->lut_bottom;
1183 tmt->tmt_batchid = records->ur_batchid;
1184 tgt_th_info(env)->tti_transno = records->ur_master_transno;
1186 if (tmt->tmt_batchid <= tdtd->tdtd_committed_batchid)
1187 tmt->tmt_committed = 1;
1189 rc = update_recovery_exec(env, tdtd, dtrq, ta);
1191 GOTO(stop_trans, rc);
1193 /* If no updates are needed to be replayed, then
1194 * mark this records as committed, so commit thread
1195 * distribute_txn_commit_thread() will delete the
1197 if (ta->ta_argno == 0)
1198 tmt->tmt_committed = 1;
1200 tur = &update_env_info(env)->uti_tur;
1201 tur->tur_update_records = dtrq->dtrq_lur;
1202 tur->tur_update_records_buf_size = dtrq->dtrq_lur_size;
1203 tur->tur_update_params = NULL;
1204 tur->tur_update_param_count = 0;
1205 tmt->tmt_update_records = tur;
1207 distribute_txn_insert_by_batchid(tmt);
1208 rc = top_trans_start(env, NULL, th);
1210 GOTO(stop_trans, rc);
1212 for (i = 0; i < ta->ta_argno; i++) {
1213 struct tx_arg *ta_arg;
1214 struct dt_object *dt_obj;
1215 struct dt_device *sub_dt;
1216 struct sub_thandle *st;
1218 ta_arg = ta->ta_args[i];
1219 dt_obj = ta_arg->object;
1221 LASSERT(tmt->tmt_committed == 0);
1222 sub_dt = lu2dt_dev(dt_obj->do_lu.lo_dev);
1223 st = lookup_sub_thandle(tmt, sub_dt);
1224 LASSERT(st != NULL);
1225 LASSERT(st->st_sub_th != NULL);
1226 rc = ta->ta_args[i]->exec_fn(env, st->st_sub_th,
1228 if (unlikely(rc < 0)) {
1229 CDEBUG(D_HA, "error during execution of #%u from"
1230 " %s:%d: rc = %d\n", i, ta->ta_args[i]->file,
1231 ta->ta_args[i]->line, rc);
1233 if (ta->ta_args[i]->undo_fn != NULL) {
1234 dt_obj = ta->ta_args[i]->object;
1236 lu2dt_dev(dt_obj->do_lu.lo_dev);
1237 st = lookup_sub_thandle(tmt, sub_dt);
1238 LASSERT(st != NULL);
1239 LASSERT(st->st_sub_th != NULL);
1241 ta->ta_args[i]->undo_fn(env,
1245 CERROR("%s: undo for %s:%d: rc = %d\n",
1246 dt_obd_name(ta->ta_handle->th_dev),
1247 ta->ta_args[i]->file,
1248 ta->ta_args[i]->line, -ENOTSUPP);
1253 CDEBUG(D_HA, "%s: executed %u/%u: rc = %d\n",
1254 dt_obd_name(sub_dt), i, ta->ta_argno, rc);
1260 rc = top_trans_stop(env, tdtd->tdtd_dt, th);
1261 for (i = 0; i < ta->ta_argno; i++) {
1262 if (ta->ta_args[i]->object != NULL) {
1263 lu_object_put(env, &ta->ta_args[i]->object->do_lu);
1264 ta->ta_args[i]->object = NULL;
1269 tur->tur_update_records = NULL;
1271 lu_context_exit(&session_env);
1272 lu_context_fini(&session_env);
1275 EXPORT_SYMBOL(distribute_txn_replay_handle);