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) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
33 * This file provides functions to handle IO requests from clients and
34 * also LFSCK routines to check parent file identifier (PFID) consistency.
36 * Author: Alexey Zhuravlev <alexey.zhuravlev@intel.com>
37 * Author: Fan Yong <fan.yong@intel.com>
40 #define DEBUG_SUBSYSTEM S_FILTER
42 #include <linux/kthread.h>
43 #include "ofd_internal.h"
44 #include <lustre_nodemap.h>
46 struct ofd_inconsistency_item {
47 struct list_head oii_list;
48 struct ofd_object *oii_obj;
49 struct filter_fid oii_ff;
53 * Verify single object for parent FID consistency.
55 * Part of LFSCK processing which checks single object PFID stored in extended
56 * attribute (XATTR) against real FID of MDT parent object received by LFSCK.
57 * This verifies that the OST object is being referenced by only a single MDT
60 * \param[in] env execution environment
61 * \param[in] ofd OFD device
62 * \param[in] oii object-related local data
63 * \param[in] lrl LFSCK request data
65 static void ofd_inconsistency_verify_one(const struct lu_env *env,
66 struct ofd_device *ofd,
67 struct ofd_inconsistency_item *oii,
68 struct lfsck_req_local *lrl)
70 struct ofd_object *fo = oii->oii_obj;
71 struct filter_fid *client_ff = &oii->oii_ff;
72 struct filter_fid *local_ff = &fo->ofo_ff;
75 LASSERT(fo->ofo_pfid_checking);
76 LASSERT(!fo->ofo_pfid_verified);
78 lrl->lrl_fid = fo->ofo_header.loh_fid; /* OST-object itself FID. */
79 lrl->lrl_ff_client = *client_ff; /* client given PFID. */
80 lrl->lrl_ff_local = *local_ff; /* OST local stored PFID. */
82 rc = lfsck_in_notify_local(env, ofd->ofd_osd, lrl, NULL);
83 ofd_write_lock(env, fo);
84 switch (lrl->lrl_status) {
89 CDEBUG(D_LFSCK, "%s: fail to verify OST local stored "
90 "PFID xattr for "DFID", the client given PFID "
91 DFID", OST local stored PFID "DFID": rc = %d\n",
92 ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
93 PFID(&client_ff->ff_parent),
94 PFID(&local_ff->ff_parent), rc);
96 fo->ofo_pfid_verified = 1;
98 case LPVS_INCONSISTENT:
101 ofd->ofd_inconsistency_self_detected++;
103 CDEBUG(D_LFSCK, "%s: fail to verify the client given "
104 "PFID for "DFID", the client given PFID "DFID
105 ", local stored PFID "DFID": rc = %d\n",
106 ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
107 PFID(&client_ff->ff_parent),
108 PFID(&local_ff->ff_parent), rc);
110 CDEBUG(D_LFSCK, "%s: both the client given PFID and "
111 "the OST local stored PFID are stale for the "
112 "OST-object "DFID", client given PFID is "DFID
113 ", local stored PFID is "DFID"\n",
114 ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
115 PFID(&client_ff->ff_parent),
116 PFID(&local_ff->ff_parent));
118 case LPVS_INCONSISTENT_TOFIX:
119 ofd->ofd_inconsistency_self_detected++;
121 ofd->ofd_inconsistency_self_repaired++;
122 CDEBUG(D_LFSCK, "%s: fixed the staled OST PFID xattr "
123 "for "DFID", with the client given PFID "DFID
124 ", the old stored PFID "DFID"\n",
125 ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
126 PFID(&client_ff->ff_parent),
127 PFID(&local_ff->ff_parent));
129 CDEBUG(D_LFSCK, "%s: fail to fix the OST PFID xattr "
130 "for "DFID", client given PFID "DFID", local "
131 "stored PFID "DFID": rc = %d\n",
132 ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
133 PFID(&client_ff->ff_parent),
134 PFID(&local_ff->ff_parent), rc);
136 local_ff->ff_parent = client_ff->ff_parent;
137 fo->ofo_pfid_verified = 1;
142 fo->ofo_pfid_checking = 0;
143 ofd_write_unlock(env, fo);
145 ofd_object_put(env, fo);
150 struct ofd_device *od_ofd;
151 struct lu_env od_env;
152 struct lfsck_req_local od_lrl;
153 struct completion *od_started;
157 #define TASK_IDLE TASK_INTERRUPTIBLE
161 * Verification thread to check parent FID consistency.
163 * Kernel thread to check consistency of parent FID for any
164 * new item added for checking by ofd_add_inconsistency_item().
166 * \param[in] args OFD device
168 * \retval 0 on successful thread termination
169 * \retval negative value if thread can't start
171 static int ofd_inconsistency_verification_main(void *_args)
173 struct oivm_args *args = _args;
174 struct lu_env *env = &args->od_env;
175 struct ofd_device *ofd = args->od_ofd;
176 struct ofd_inconsistency_item *oii;
177 struct lfsck_req_local *lrl = &args->od_lrl;
180 lrl->lrl_event = LEL_PAIRS_VERIFY_LOCAL;
181 lrl->lrl_active = LFSCK_TYPE_LAYOUT;
182 complete(args->od_started);
184 spin_lock(&ofd->ofd_inconsistency_lock);
185 while (({set_current_state(TASK_IDLE);
186 !kthread_should_stop(); })) {
188 while (!list_empty(&ofd->ofd_inconsistency_list)) {
189 __set_current_state(TASK_RUNNING);
190 oii = list_entry(ofd->ofd_inconsistency_list.next,
191 struct ofd_inconsistency_item,
193 list_del_init(&oii->oii_list);
194 spin_unlock(&ofd->ofd_inconsistency_lock);
195 ofd_inconsistency_verify_one(env, ofd, oii, lrl);
196 spin_lock(&ofd->ofd_inconsistency_lock);
199 spin_unlock(&ofd->ofd_inconsistency_lock);
201 spin_lock(&ofd->ofd_inconsistency_lock);
203 __set_current_state(TASK_RUNNING);
205 while (!list_empty(&ofd->ofd_inconsistency_list)) {
206 struct ofd_object *fo;
208 oii = list_entry(ofd->ofd_inconsistency_list.next,
209 struct ofd_inconsistency_item,
211 list_del_init(&oii->oii_list);
213 spin_unlock(&ofd->ofd_inconsistency_lock);
215 ofd_write_lock(env, fo);
216 fo->ofo_pfid_checking = 0;
217 ofd_write_unlock(env, fo);
219 ofd_object_put(env, fo);
221 spin_lock(&ofd->ofd_inconsistency_lock);
224 spin_unlock(&ofd->ofd_inconsistency_lock);
226 lu_env_fini(&args->od_env);
232 * Start parent FID verification thread.
234 * See ofd_inconsistency_verification_main().
236 * \param[in] ofd OFD device
238 * \retval 0 on successful start of thread
239 * \retval negative value on error
241 int ofd_start_inconsistency_verification_thread(struct ofd_device *ofd)
243 struct task_struct *task;
244 struct oivm_args *args;
245 DECLARE_COMPLETION_ONSTACK(started);
248 if (ofd->ofd_inconsistency_task)
254 rc = lu_env_init(&args->od_env, LCT_DT_THREAD);
261 args->od_started = &started;
262 task = kthread_create(ofd_inconsistency_verification_main, args,
263 "inconsistency_verification");
266 CERROR("%s: cannot start self_repair thread: rc = %d\n",
270 spin_lock(&ofd->ofd_inconsistency_lock);
271 if (ofd->ofd_inconsistency_task)
274 ofd->ofd_inconsistency_task = task;
275 spin_unlock(&ofd->ofd_inconsistency_lock);
280 wake_up_process(task);
281 wait_for_completion(&started);
285 lu_env_fini(&args->od_env);
293 * Stop parent FID verification thread.
295 * \param[in] ofd OFD device
297 * \retval 0 on successful start of thread
298 * \retval -EALREADY if thread is already stopped
300 int ofd_stop_inconsistency_verification_thread(struct ofd_device *ofd)
302 struct task_struct *task;
304 spin_lock(&ofd->ofd_inconsistency_lock);
305 task = ofd->ofd_inconsistency_task;
306 ofd->ofd_inconsistency_task = NULL;
307 spin_unlock(&ofd->ofd_inconsistency_lock);
317 * Add new item for parent FID verification.
319 * Prepare new verification item and pass it to the dedicated
320 * verification thread for further processing.
322 * \param[in] env execution environment
323 * \param[in] fo OFD object
324 * \param[in] oa OBDO structure with PFID
326 static void ofd_add_inconsistency_item(const struct lu_env *env,
327 struct ofd_object *fo, struct obdo *oa)
329 struct ofd_device *ofd = ofd_obj2dev(fo);
330 struct ofd_inconsistency_item *oii;
331 struct filter_fid *ff;
338 INIT_LIST_HEAD(&oii->oii_list);
339 lu_object_get(&fo->ofo_obj.do_lu);
342 ff->ff_parent.f_seq = oa->o_parent_seq;
343 ff->ff_parent.f_oid = oa->o_parent_oid;
344 ff->ff_parent.f_stripe_idx = oa->o_stripe_idx;
345 ff->ff_layout = oa->o_layout;
347 spin_lock(&ofd->ofd_inconsistency_lock);
348 if (fo->ofo_pfid_checking || fo->ofo_pfid_verified) {
349 spin_unlock(&ofd->ofd_inconsistency_lock);
355 fo->ofo_pfid_checking = 1;
356 if (list_empty(&ofd->ofd_inconsistency_list))
358 list_add_tail(&oii->oii_list, &ofd->ofd_inconsistency_list);
359 if (wakeup && ofd->ofd_inconsistency_task)
360 wake_up_process(ofd->ofd_inconsistency_task);
361 spin_unlock(&ofd->ofd_inconsistency_lock);
363 /* XXX: When the found inconsistency exceeds some threshold,
364 * we can trigger the LFSCK to scan part of the system
365 * or the whole system, which depends on how to define
366 * the threshold, a simple way maybe like that: define
367 * the absolute value of how many inconsisteny allowed
368 * to be repaired via self detect/repair mechanism, if
369 * exceeded, then trigger the LFSCK to scan the layout
370 * inconsistency within the whole system. */
374 * Verify parent FID of an object.
376 * Check the parent FID is sane and start extended
377 * verification procedure otherwise.
379 * \param[in] env execution environment
380 * \param[in] fo OFD object
381 * \param[in] oa OBDO structure with PFID
383 * \retval 0 on successful verification
384 * \retval -EINPROGRESS if PFID is being repaired
385 * \retval -EPERM if PFID was verified but still insane
387 int ofd_verify_ff(const struct lu_env *env, struct ofd_object *fo,
390 struct lu_fid *pfid = &fo->ofo_ff.ff_parent;
394 if (fid_is_sane(pfid)) {
395 if (likely(oa->o_parent_seq == pfid->f_seq &&
396 oa->o_parent_oid == pfid->f_oid &&
397 oa->o_stripe_idx == pfid->f_stripe_idx))
400 if (fo->ofo_pfid_verified)
404 /* The OST-object may be inconsistent, and we need further verification.
405 * To avoid block the RPC service thread, return -EINPROGRESS to client
406 * and make it retry later. */
407 if (fo->ofo_pfid_checking)
408 RETURN(-EINPROGRESS);
410 rc = ofd_object_ff_load(env, fo);
417 if (likely(oa->o_parent_seq == pfid->f_seq &&
418 oa->o_parent_oid == pfid->f_oid &&
419 oa->o_stripe_idx == pfid->f_stripe_idx))
422 /* Push it to the dedicated thread for further verification. */
423 ofd_add_inconsistency_item(env, fo, oa);
425 RETURN(-EINPROGRESS);
429 * FLR: verify the layout version of object.
431 * \param[in] env execution environment
432 * \param[in] fo OFD object
433 * \param[in] oa OBDO structure with layout version
435 * \retval 0 on successful verification
436 * \retval -EINPROGRESS layout version is in transfer
437 * \retval -ESTALE the layout version on client is stale
439 int ofd_verify_layout_version(const struct lu_env *env,
440 struct ofd_object *fo, const struct obdo *oa)
442 __u32 layout_version;
446 if (unlikely(OBD_FAIL_CHECK(OBD_FAIL_OST_SKIP_LV_CHECK)))
449 rc = ofd_object_ff_load(env, fo);
456 layout_version = fo->ofo_ff.ff_layout_version;
457 if (oa->o_layout_version >= layout_version &&
458 oa->o_layout_version <= layout_version + fo->ofo_ff.ff_range)
461 /* normal traffic, decide if to return ESTALE or EINPROGRESS */
462 layout_version &= ~LU_LAYOUT_RESYNC;
464 /* this update is not legitimate */
465 if ((oa->o_layout_version & ~LU_LAYOUT_RESYNC) <= layout_version)
466 GOTO(out, rc = -ESTALE);
468 /* layout version may not be transmitted yet */
469 if ((oa->o_layout_version & ~LU_LAYOUT_RESYNC) > layout_version)
470 GOTO(out, rc = -EINPROGRESS);
475 CDEBUG(D_INODE, DFID " verify layout version: %u vs. %u/%u, rc: %d\n",
476 PFID(lu_object_fid(&fo->ofo_obj.do_lu)),
477 oa->o_layout_version, fo->ofo_ff.ff_layout_version,
478 fo->ofo_ff.ff_range, rc);
484 * Lazy ATIME update to refresh atime every ofd_atime_diff
485 * seconds so that external scanning tool can see it actual
486 * within that period and be able to identify accessed files
488 static void ofd_handle_atime(const struct lu_env *env, struct ofd_device *ofd,
489 struct ofd_object *fo, time64_t atime)
496 if (ofd->ofd_atime_diff == 0)
499 la = &ofd_info(env)->fti_attr2;
500 o = ofd_object_child(fo);
502 if (unlikely(fo->ofo_atime_ondisk == 0)) {
503 rc = dt_attr_get(env, o, la);
506 LASSERT(la->la_valid & LA_ATIME);
507 if (la->la_atime == 0)
508 la->la_atime = la->la_mtime;
509 fo->ofo_atime_ondisk = la->la_atime;
511 if (atime - fo->ofo_atime_ondisk < ofd->ofd_atime_diff)
514 /* atime hasn't been updated too long, update it */
515 fo->ofo_atime_ondisk = atime;
517 th = ofd_trans_create(env, ofd);
519 CERROR("%s: cannot create transaction: rc = %d\n",
520 ofd_name(ofd), (int)PTR_ERR(th));
524 la->la_valid = LA_ATIME;
525 rc = dt_declare_attr_set(env, o, la, th);
529 rc = dt_trans_start_local(env, ofd->ofd_osd , th);
531 CERROR("%s: cannot start transaction: rc = %d\n",
536 ofd_read_lock(env, fo);
537 if (ofd_object_exists(fo)) {
538 la->la_atime = fo->ofo_atime_ondisk;
539 rc = dt_attr_set(env, o, la, th);
542 ofd_read_unlock(env, fo);
545 ofd_trans_stop(env, ofd, th, rc);
549 * Prepare buffers for read request processing.
551 * This function converts remote buffers from client to local buffers
552 * and prepares the latter.
554 * \param[in] env execution environment
555 * \param[in] exp OBD export of client
556 * \param[in] ofd OFD device
557 * \param[in] fid FID of object
558 * \param[in] la object attributes
559 * \param[in] oa OBDO structure from client
560 * \param[in] niocount number of remote buffers
561 * \param[in] rnb remote buffers
562 * \param[in] nr_local number of local buffers
563 * \param[in] lnb local buffers
564 * \param[in] jobid job ID name
566 * \retval 0 on successful prepare
567 * \retval negative value on error
569 static int ofd_preprw_read(const struct lu_env *env, struct obd_export *exp,
570 struct ofd_device *ofd, const struct lu_fid *fid,
571 struct lu_attr *la, struct obdo *oa, int niocount,
572 struct niobuf_remote *rnb, int *nr_local,
573 struct niobuf_local *lnb)
575 struct ofd_object *fo;
576 int i, j, rc, tot_bytes = 0;
577 enum dt_bufs_type dbt = DT_BUFS_TYPE_READ;
578 int maxlnb = *nr_local;
582 LASSERT(env != NULL);
584 fo = ofd_object_find(env, ofd, fid);
589 ofd_info(env)->fti_obj = fo;
591 if (oa->o_valid & OBD_MD_FLATIME)
592 ofd_handle_atime(env, ofd, fo, oa->o_atime);
594 ofd_read_lock(env, fo);
595 if (!ofd_object_exists(fo))
596 GOTO(unlock, rc = -ENOENT);
598 if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
599 rc = ofd_verify_ff(env, fo, oa);
604 if (ptlrpc_connection_is_local(exp->exp_connection))
605 dbt |= DT_BUFS_TYPE_LOCAL;
610 for (*nr_local = 0, i = 0, j = 0; i < niocount; i++) {
611 begin = min_t(__u64, begin, rnb[i].rnb_offset);
612 end = max_t(__u64, end, rnb[i].rnb_offset + rnb[i].rnb_len);
614 if (OBD_FAIL_CHECK(OBD_FAIL_OST_2BIG_NIOBUF))
615 rnb[i].rnb_len = 100 * 1024 * 1024;
617 rc = dt_bufs_get(env, ofd_object_child(fo), rnb + i,
618 lnb + j, maxlnb, dbt);
619 if (unlikely(rc < 0))
621 LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
622 /* correct index for local buffers to continue with */
626 LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
627 tot_bytes += rnb[i].rnb_len;
630 LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
631 rc = dt_read_prep(env, ofd_object_child(fo), lnb, *nr_local);
637 .f_seq = oa->o_parent_seq,
638 .f_oid = oa->o_parent_oid,
639 .f_ver = oa->o_stripe_idx,
649 dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
651 ofd_read_unlock(env, fo);
652 ofd_object_put(env, fo);
657 * Prepare buffers for write request processing.
659 * This function converts remote buffers from client to local buffers
660 * and prepares the latter. If there is recovery in progress and required
661 * object is missing then it can be re-created before write.
663 * \param[in] env execution environment
664 * \param[in] exp OBD export of client
665 * \param[in] ofd OFD device
666 * \param[in] fid FID of object
667 * \param[in] la object attributes
668 * \param[in] oa OBDO structure from client
669 * \param[in] objcount always 1
670 * \param[in] obj object data
671 * \param[in] rnb remote buffers
672 * \param[in] nr_local number of local buffers
673 * \param[in] lnb local buffers
674 * \param[in] jobid job ID name
676 * \retval 0 on successful prepare
677 * \retval negative value on error
679 static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
680 struct ofd_device *ofd, const struct lu_fid *fid,
681 struct lu_attr *la, struct obdo *oa,
682 int objcount, struct obd_ioobj *obj,
683 struct niobuf_remote *rnb, int *nr_local,
684 struct niobuf_local *lnb)
686 struct ofd_object *fo;
687 int i, j, k, rc = 0, tot_bytes = 0;
688 enum dt_bufs_type dbt = DT_BUFS_TYPE_WRITE;
689 int maxlnb = *nr_local;
691 struct range_lock *range = &ofd_info(env)->fti_write_range;
694 LASSERT(env != NULL);
695 LASSERT(objcount == 1);
697 if (unlikely(exp->exp_obd->obd_recovering)) {
698 u64 seq = ostid_seq(&oa->o_oi);
699 u64 oid = ostid_id(&oa->o_oi);
700 struct ofd_seq *oseq;
702 oseq = ofd_seq_load(env, ofd, seq);
704 CERROR("%s: Can't find FID Sequence %#llx: rc = %d\n",
705 ofd_name(ofd), seq, (int)PTR_ERR(oseq));
706 GOTO(out, rc = -EINVAL);
709 if (oid > ofd_seq_last_oid(oseq)) {
713 mutex_lock(&oseq->os_create_lock);
714 diff = oid - ofd_seq_last_oid(oseq);
716 /* Do sync create if the seq is about to used up */
717 if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
718 if (unlikely(oid >= IDIF_MAX_OID - 1))
720 } else if (fid_seq_is_norm(seq)) {
722 LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
725 CERROR("%s : invalid o_seq "DOSTID"\n",
726 ofd_name(ofd), POSTID(&oa->o_oi));
727 mutex_unlock(&oseq->os_create_lock);
728 ofd_seq_put(env, oseq);
729 GOTO(out, rc = -EINVAL);
733 u64 next_id = ofd_seq_last_oid(oseq) + 1;
734 int count = ofd_precreate_batch(ofd, diff);
736 rc = ofd_precreate_objects(env, ofd, next_id,
739 mutex_unlock(&oseq->os_create_lock);
740 ofd_seq_put(env, oseq);
747 mutex_unlock(&oseq->os_create_lock);
750 ofd_seq_put(env, oseq);
753 /* Process incoming grant info, set OBD_BRW_GRANTED flag and grant some
754 * space back if possible, we have to do this outside of the lock as
755 * grant preparation may need to sync whole fs thus wait for all the
756 * transactions to complete. */
757 tgt_grant_prepare_write(env, exp, oa, rnb, obj->ioo_bufcnt);
759 fo = ofd_object_find(env, ofd, fid);
761 GOTO(out, rc = PTR_ERR(fo));
764 ofd_info(env)->fti_obj = fo;
766 ofd_read_lock(env, fo);
767 if (!ofd_object_exists(fo)) {
768 CERROR("%s: BRW to missing obj "DOSTID"\n",
769 exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
770 ofd_read_unlock(env, fo);
771 ofd_object_put(env, fo);
772 GOTO(out, rc = -ENOENT);
775 if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
776 rc = ofd_verify_ff(env, fo, oa);
778 ofd_read_unlock(env, fo);
779 ofd_object_put(env, fo);
784 /* need to verify layout version */
785 if (oa->o_valid & OBD_MD_LAYOUT_VERSION) {
786 rc = ofd_verify_layout_version(env, fo, oa);
788 ofd_read_unlock(env, fo);
789 ofd_object_put(env, fo);
793 oa->o_valid &= ~OBD_MD_LAYOUT_VERSION;
796 if (ptlrpc_connection_is_local(exp->exp_connection))
797 dbt |= DT_BUFS_TYPE_LOCAL;
802 /* parse remote buffers to local buffers and prepare the latter */
803 for (*nr_local = 0, i = 0, j = 0; i < obj->ioo_bufcnt; i++) {
804 begin = min_t(__u64, begin, rnb[i].rnb_offset);
805 end = max_t(__u64, end, rnb[i].rnb_offset + rnb[i].rnb_len);
807 if (OBD_FAIL_CHECK(OBD_FAIL_OST_2BIG_NIOBUF))
808 rnb[i].rnb_len += PAGE_SIZE;
809 rc = dt_bufs_get(env, ofd_object_child(fo),
810 rnb + i, lnb + j, maxlnb, dbt);
811 if (unlikely(rc < 0))
813 LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
814 /* correct index for local buffers to continue with */
815 for (k = 0; k < rc; k++) {
816 lnb[j+k].lnb_flags = rnb[i].rnb_flags;
817 lnb[j+k].lnb_flags &= ~OBD_BRW_LOCALS;
818 if (!(rnb[i].rnb_flags & OBD_BRW_GRANTED))
819 lnb[j+k].lnb_rc = -ENOSPC;
824 LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
825 tot_bytes += rnb[i].rnb_len;
827 LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
829 rc = dt_write_prep(env, ofd_object_child(fo), lnb, *nr_local);
830 if (unlikely(rc != 0))
833 ofd_read_unlock(env, fo);
837 .f_seq = oa->o_parent_seq,
838 .f_oid = oa->o_parent_oid,
839 .f_ver = oa->o_stripe_idx,
847 * Reordering precautions: make sure that request processing that
848 * was able to receive its bulk data should not get reordered with
849 * overlapping BRW requests, e.g.
850 * 1) BRW1 sent, bulk data received, but disk I/O delayed
851 * 2) BRW1 resent and fully processed
852 * 3) the page was unlocked on the client and its writeback bit reset
853 * 4) BRW2 sent and fully processed
854 * 5) BRW1 processing wakes up and writes stale data to disk
855 * If on step 1 bulk data was not received, client resend will invalidate
856 * its bulk descriptor and the RPC will be dropped due to failed bulk
857 * transfer, which is just fine.
859 range_lock_init(range,
861 rnb[obj->ioo_bufcnt - 1].rnb_offset +
862 rnb[obj->ioo_bufcnt - 1].rnb_len - 1);
863 range_lock(&fo->ofo_write_tree, range);
864 ofd_info(env)->fti_range_locked = 1;
868 dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
869 ofd_read_unlock(env, fo);
870 ofd_object_put(env, fo);
871 /* tgt_grant_prepare_write() was called, so we must commit */
872 tgt_grant_commit(exp, oa->o_grant_used, rc);
874 /* let's still process incoming grant information packed in the oa,
875 * but without enforcing grant since we won't proceed with the write.
876 * Just like a read request actually. */
877 tgt_grant_prepare_read(env, exp, oa);
882 * Prepare bulk IO requests for processing.
884 * This function does initial checks of IO and calls corresponding
885 * functions for read/write processing.
887 * \param[in] env execution environment
888 * \param[in] cmd IO type (read/write)
889 * \param[in] exp OBD export of client
890 * \param[in] oa OBDO structure from request
891 * \param[in] objcount always 1
892 * \param[in] obj object data
893 * \param[in] rnb remote buffers
894 * \param[in] nr_local number of local buffers
895 * \param[in] lnb local buffers
897 * \retval 0 on successful prepare
898 * \retval negative value on error
900 int ofd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
901 struct obdo *oa, int objcount, struct obd_ioobj *obj,
902 struct niobuf_remote *rnb, int *nr_local,
903 struct niobuf_local *lnb)
905 struct tgt_session_info *tsi = tgt_ses_info(env);
906 struct ofd_device *ofd = ofd_exp(exp);
907 struct ofd_thread_info *info;
908 const struct lu_fid *fid = &oa->o_oi.oi_fid;
911 if (*nr_local > PTLRPC_MAX_BRW_PAGES) {
912 CERROR("%s: bulk has too many pages %d, which exceeds the maximum pages per RPC of %d\n",
913 exp->exp_obd->obd_name, *nr_local, PTLRPC_MAX_BRW_PAGES);
917 if (tgt_ses_req(tsi) == NULL) { /* echo client case */
918 info = ofd_info_init(env, exp);
920 info = tsi2ofd_info(tsi);
925 if (OBD_FAIL_CHECK(OBD_FAIL_SRV_ENOENT)) {
926 struct ofd_seq *oseq;
928 oseq = ofd_seq_load(env, ofd, ostid_seq(&oa->o_oi));
930 CERROR("%s: Can not find seq for "DOSTID
931 ": rc = %ld\n", ofd_name(ofd), POSTID(&oa->o_oi),
936 if (oseq->os_destroys_in_progress == 0) {
937 /* don't fail lookups for orphan recovery, it causes
938 * later LBUGs when objects still exist during
940 ofd_seq_put(env, oseq);
943 ofd_seq_put(env, oseq);
946 LASSERT(objcount == 1);
947 LASSERT(obj->ioo_bufcnt > 0);
949 if (cmd == OBD_BRW_WRITE) {
950 la_from_obdo(&info->fti_attr, oa, OBD_MD_FLGETATTR);
951 rc = ofd_preprw_write(env, exp, ofd, fid, &info->fti_attr, oa,
952 objcount, obj, rnb, nr_local, lnb);
953 } else if (cmd == OBD_BRW_READ) {
954 tgt_grant_prepare_read(env, exp, oa);
955 rc = ofd_preprw_read(env, exp, ofd, fid, &info->fti_attr, oa,
956 obj->ioo_bufcnt, rnb, nr_local, lnb);
958 CERROR("%s: wrong cmd %d received!\n",
959 exp->exp_obd->obd_name, cmd);
966 * Drop reference on local buffers for read bulk IO.
968 * This will free all local buffers use by this read request.
970 * \param[in] env execution environment
971 * \param[in] ofd OFD device
972 * \param[in] fid object FID
973 * \param[in] objcount always 1
974 * \param[in] niocount number of local buffers
975 * \param[in] lnb local buffers
977 * \retval 0 on successful execution
978 * \retval negative value on error
981 ofd_commitrw_read(const struct lu_env *env, struct ofd_device *ofd,
982 const struct lu_fid *fid, int objcount, int niocount,
983 struct niobuf_local *lnb)
985 struct ofd_object *fo;
989 LASSERT(niocount > 0);
991 fo = ofd_info(env)->fti_obj;
993 LASSERT(ofd_object_exists(fo));
994 dt_bufs_put(env, ofd_object_child(fo), lnb, niocount);
996 ofd_read_unlock(env, fo);
997 ofd_object_put(env, fo);
1003 * Set attributes of object during write bulk IO processing.
1005 * Change object attributes and write parent FID into extended
1006 * attributes when needed.
1008 * \param[in] env execution environment
1009 * \param[in] ofd OFD device
1010 * \param[in] ofd_obj OFD object
1011 * \param[in] la object attributes
1012 * \param[in] oa obdo
1014 * \retval 0 on successful attributes update
1015 * \retval negative value on error
1018 ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
1019 struct ofd_object *ofd_obj, struct lu_attr *la,
1022 struct ofd_thread_info *info = ofd_info(env);
1023 struct filter_fid *ff = &info->fti_mds_fid;
1024 __u64 valid = la->la_valid;
1026 struct dt_object *dt_obj;
1034 dt_obj = ofd_object_child(ofd_obj);
1035 LASSERT(dt_obj != NULL);
1037 la->la_valid &= LA_UID | LA_GID | LA_PROJID;
1039 rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
1043 if (!la->la_valid && !(oa->o_valid &
1044 (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
1045 /* no attributes to set */
1048 th = ofd_trans_create(env, ofd);
1050 GOTO(out, rc = PTR_ERR(th));
1053 rc = dt_declare_attr_set(env, dt_obj, la, th);
1058 if (oa->o_valid & (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT |
1059 OBD_MD_LAYOUT_VERSION)) {
1060 rc = dt_declare_xattr_set(env, dt_obj, &info->fti_buf,
1061 XATTR_NAME_FID, 0, th);
1065 /* We don't need a transno for this operation which will be re-executed
1066 * anyway when the OST_WRITE (with a transno assigned) is replayed */
1067 rc = dt_trans_start_local(env, ofd->ofd_osd , th);
1071 ofd_read_lock(env, ofd_obj);
1073 rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
1075 GOTO(out_unlock, rc);
1077 if (!la->la_valid && !(oa->o_valid &
1078 (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
1079 /* no attributes to set */
1080 GOTO(out_unlock, rc = 0);
1084 /* set uid/gid/projid */
1086 rc = dt_attr_set(env, dt_obj, la, th);
1088 GOTO(out_unlock, rc);
1091 fl = ofd_object_ff_update(env, ofd_obj, oa, ff);
1093 GOTO(out_unlock, rc = fl);
1095 /* set filter fid EA.
1096 * FIXME: it holds read lock of ofd object to modify the XATTR_NAME_FID
1097 * while the write lock should be held. However, it should work because
1098 * write RPCs only modify ff_{parent,layout} and those information will
1099 * be the same from all the write RPCs. The reason that fl is not used
1100 * in dt_xattr_set() is to allow this race. */
1101 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NOPFID))
1102 GOTO(out_unlock, rc);
1103 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR1))
1104 ff->ff_parent.f_oid = cpu_to_le32(1UL << 31);
1105 else if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR2))
1106 le32_add_cpu(&ff->ff_parent.f_oid, -1);
1108 info->fti_buf.lb_buf = ff;
1109 info->fti_buf.lb_len = sizeof(*ff);
1110 rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID, 0, th);
1112 filter_fid_le_to_cpu(&ofd_obj->ofo_ff, ff, sizeof(*ff));
1114 GOTO(out_unlock, rc);
1117 ofd_read_unlock(env, ofd_obj);
1119 dt_trans_stop(env, ofd->ofd_osd, th);
1121 la->la_valid = valid;
1125 struct ofd_soft_sync_callback {
1126 struct dt_txn_commit_cb ossc_cb;
1127 struct obd_export *ossc_exp;
1131 * Callback function for "soft sync" update.
1133 * Reset fed_soft_sync_count upon committing the "soft_sync" update.
1134 * See ofd_soft_sync_cb_add() below for more details on soft sync.
1136 * \param[in] env execution environment
1137 * \param[in] th transaction handle
1138 * \param[in] cb callback data
1139 * \param[in] err error code
1141 static void ofd_cb_soft_sync(struct lu_env *env, struct thandle *th,
1142 struct dt_txn_commit_cb *cb, int err)
1144 struct ofd_soft_sync_callback *ossc;
1146 ossc = container_of(cb, struct ofd_soft_sync_callback, ossc_cb);
1148 CDEBUG(D_INODE, "export %p soft sync count is reset\n", ossc->ossc_exp);
1149 atomic_set(&ossc->ossc_exp->exp_filter_data.fed_soft_sync_count, 0);
1151 class_export_cb_put(ossc->ossc_exp);
1156 * Add callback for "soft sync" processing.
1158 * The "soft sync" mechanism does asynchronous commit when OBD_BRW_SOFT_SYNC
1159 * flag is set in client buffers. The intention is for this operation to
1160 * commit pages belonging to a client which has "too many" outstanding
1161 * unstable pages in its cache. See LU-2139 for details.
1163 * This function adds callback to be called when commit is done.
1165 * \param[in] th transaction handle
1166 * \param[in] exp OBD export of client
1168 * \retval 0 on successful callback adding
1169 * \retval negative value on error
1171 static int ofd_soft_sync_cb_add(struct thandle *th, struct obd_export *exp)
1173 struct ofd_soft_sync_callback *ossc;
1174 struct dt_txn_commit_cb *dcb;
1177 OBD_ALLOC_PTR(ossc);
1181 ossc->ossc_exp = class_export_cb_get(exp);
1183 dcb = &ossc->ossc_cb;
1184 dcb->dcb_func = ofd_cb_soft_sync;
1185 INIT_LIST_HEAD(&dcb->dcb_linkage);
1186 strlcpy(dcb->dcb_name, "ofd_cb_soft_sync", sizeof(dcb->dcb_name));
1188 rc = dt_trans_cb_add(th, dcb);
1190 class_export_cb_put(exp);
1198 * Commit bulk IO buffers to the storage.
1200 * This function finalizes write IO processing by writing data to the disk.
1201 * That write can be synchronous or asynchronous depending on buffers flags.
1203 * \param[in] env execution environment
1204 * \param[in] exp OBD export of client
1205 * \param[in] ofd OFD device
1206 * \param[in] fid FID of object
1207 * \param[in] la object attributes
1208 * \param[in] ff parent FID of object
1209 * \param[in] objcount always 1
1210 * \param[in] niocount number of local buffers
1211 * \param[in] lnb local buffers
1212 * \param[in] granted grant space consumed for the bulk I/O
1213 * \param[in] old_rc result of processing at this point
1215 * \retval 0 on successful commit
1216 * \retval negative value on error
1219 ofd_commitrw_write(const struct lu_env *env, struct obd_export *exp,
1220 struct ofd_device *ofd, const struct lu_fid *fid,
1221 struct lu_attr *la, struct obdo *oa, int objcount,
1222 int niocount, struct niobuf_local *lnb,
1223 unsigned long granted, int old_rc)
1225 struct ofd_thread_info *info = ofd_info(env);
1226 struct filter_export_data *fed = &exp->exp_filter_data;
1227 struct ofd_object *fo;
1228 struct dt_object *o;
1234 bool soft_sync = false;
1235 bool cb_registered = false;
1236 bool fake_write = false;
1237 struct range_lock *range = &ofd_info(env)->fti_write_range;
1241 LASSERT(objcount == 1);
1243 fo = ofd_info(env)->fti_obj;
1244 LASSERT(fo != NULL);
1246 o = ofd_object_child(fo);
1250 GOTO(out, rc = old_rc);
1251 if (!ofd_object_exists(fo))
1252 GOTO(out, rc = -ENOENT);
1255 * The first write to each object must set some attributes. It is
1256 * important to set the uid/gid before calling
1257 * dt_declare_write_commit() since quota enforcement is now handled in
1260 rc = ofd_write_attr_set(env, ofd, fo, la, oa);
1264 la->la_valid &= LA_ATIME | LA_MTIME | LA_CTIME;
1266 /* do fake write, to simulate the write case for performance testing */
1267 if (OBD_FAIL_CHECK_QUIET(OBD_FAIL_OST_FAKE_RW)) {
1268 struct niobuf_local *last = &lnb[niocount - 1];
1269 __u64 file_size = last->lnb_file_offset + last->lnb_len;
1270 __u64 valid = la->la_valid;
1272 la->la_valid = LA_SIZE;
1274 rc = dt_attr_get(env, o, la);
1275 if (rc < 0 && rc != -ENOENT)
1278 if (file_size < la->la_size)
1279 file_size = la->la_size;
1281 /* dirty inode by setting file size */
1282 la->la_valid = valid | LA_SIZE;
1283 la->la_size = file_size;
1289 th = ofd_trans_create(env, ofd);
1291 GOTO(out, rc = PTR_ERR(th));
1293 th->th_sync |= ofd->ofd_sync_journal;
1294 if (th->th_sync == 0) {
1295 for (i = 0; i < niocount; i++) {
1296 if (!(lnb[i].lnb_flags & OBD_BRW_ASYNC)) {
1300 if (lnb[i].lnb_flags & OBD_BRW_SOFT_SYNC)
1305 if (OBD_FAIL_CHECK(OBD_FAIL_OST_DQACQ_NET))
1306 GOTO(out_stop, rc = -EINPROGRESS);
1308 if (likely(!fake_write)) {
1309 rc = dt_declare_write_commit(env, o, lnb, niocount, th);
1314 /* don't update atime on disk if it is older */
1315 if (la->la_valid & LA_ATIME && la->la_atime <= fo->ofo_atime_ondisk)
1316 la->la_valid &= ~LA_ATIME;
1319 /* update [mac]time if needed */
1320 rc = dt_declare_attr_set(env, o, la, th);
1325 rc = ofd_trans_start(env, ofd, fo, th);
1329 ofd_read_lock(env, fo);
1330 if (!ofd_object_exists(fo))
1331 GOTO(out_unlock, rc = -ENOENT);
1333 /* Don't update timestamps if this write is older than a
1334 * setattr which modifies the timestamps. b=10150 */
1335 if (la->la_valid && tgt_fmd_check(exp, fid, info->fti_xid)) {
1336 rc = dt_attr_set(env, o, la, th);
1338 GOTO(out_unlock, rc);
1339 if (la->la_valid & LA_ATIME)
1340 fo->ofo_atime_ondisk = la->la_atime;
1343 if (likely(!fake_write)) {
1344 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_OST_WR_ATTR_DELAY,
1345 OBD_FAIL_ONCE, cfs_fail_val);
1346 rc = dt_write_commit(env, o, lnb, niocount, th, oa->o_size);
1348 restart = th->th_restart_tran;
1349 GOTO(out_unlock, rc);
1353 /* get attr to return */
1354 rc = dt_attr_get(env, o, la);
1357 ofd_read_unlock(env, fo);
1359 /* Force commit to make the just-deleted blocks
1360 * reusable. LU-456 */
1364 /* do this before trans stop in case commit has finished */
1365 if (!th->th_sync && soft_sync && !cb_registered) {
1366 ofd_soft_sync_cb_add(th, exp);
1367 cb_registered = true;
1370 if (rc == 0 && granted > 0) {
1371 if (tgt_grant_commit_cb_add(th, exp, granted) == 0)
1375 rc2 = ofd_trans_stop(env, ofd, th, restart ? 0 : rc);
1378 if (rc == -ENOSPC && retries++ < 3) {
1379 CDEBUG(D_INODE, "retry after force commit, retries:%d\n",
1387 if (retries % 10000 == 0)
1388 CERROR("%s: restart IO write too many times: %d\n",
1389 ofd_name(ofd), retries);
1390 CDEBUG(D_INODE, "retry transaction, retries:%d\n",
1395 /* reset fed_soft_sync_count upon non-SOFT_SYNC RPC */
1396 atomic_set(&fed->fed_soft_sync_count, 0);
1397 else if (atomic_inc_return(&fed->fed_soft_sync_count) ==
1398 ofd->ofd_soft_sync_limit)
1399 dt_commit_async(env, ofd->ofd_osd);
1402 if (info->fti_range_locked) {
1403 range_unlock(&fo->ofo_write_tree, range);
1404 info->fti_range_locked = 0;
1406 dt_bufs_put(env, o, lnb, niocount);
1407 ofd_object_put(env, fo);
1409 tgt_grant_commit(exp, granted, old_rc);
1414 * Commit bulk IO to the storage.
1416 * This is companion function to the ofd_preprw(). It finishes bulk IO
1417 * request processing by committing buffers to the storage (WRITE) and/or
1418 * freeing those buffers (read/write). See ofd_commitrw_read() and
1419 * ofd_commitrw_write() for details about each type of IO.
1421 * \param[in] env execution environment
1422 * \param[in] cmd IO type (READ/WRITE)
1423 * \param[in] exp OBD export of client
1424 * \param[in] oa OBDO structure from client
1425 * \param[in] objcount always 1
1426 * \param[in] obj object data
1427 * \param[in] rnb remote buffers
1428 * \param[in] npages number of local buffers
1429 * \param[in] lnb local buffers
1430 * \param[in] old_rc result of processing at this point
1432 * \retval 0 on successful commit
1433 * \retval negative value on error
1435 int ofd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1436 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1437 struct niobuf_remote *rnb, int npages,
1438 struct niobuf_local *lnb, int old_rc, int nob, ktime_t kstart)
1440 struct tgt_session_info *tsi = tgt_ses_info(env);
1441 struct ofd_thread_info *info = ofd_info(env);
1442 struct ofd_device *ofd = ofd_exp(exp);
1443 const struct lu_fid *fid = &oa->o_oi.oi_fid;
1444 struct ldlm_namespace *ns = ofd->ofd_namespace;
1445 struct ldlm_resource *rs = NULL;
1449 int root_squash = 0;
1451 LASSERT(npages > 0);
1453 if (tgt_ses_req(tsi) == NULL) { /* echo client case */
1456 jobid = tsi->tsi_jobid;
1459 if (cmd == OBD_BRW_WRITE) {
1460 struct lu_nodemap *nodemap;
1461 __u32 mapped_uid, mapped_gid, mapped_projid;
1463 /* doing this before the commit operation places the counter
1464 * update almost immediately after reply to the client, which
1465 * gives reasonable time stats and lets us use the actual
1466 * bytes of i/o (rather than requested)
1468 ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE_BYTES, jobid, nob);
1469 ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE, jobid,
1470 ktime_us_delta(ktime_get(), kstart));
1472 nodemap = nodemap_get_from_exp(exp);
1473 if (IS_ERR(nodemap))
1474 RETURN(PTR_ERR(nodemap));
1475 mapped_uid = nodemap_map_id(nodemap, NODEMAP_UID,
1476 NODEMAP_FS_TO_CLIENT,
1478 mapped_gid = nodemap_map_id(nodemap, NODEMAP_GID,
1479 NODEMAP_FS_TO_CLIENT,
1481 mapped_projid = nodemap_map_id(nodemap, NODEMAP_PROJID,
1482 NODEMAP_FS_TO_CLIENT,
1485 if (!IS_ERR_OR_NULL(nodemap)) {
1486 /* do not bypass quota enforcement if squashed uid */
1487 if (unlikely(mapped_uid == nodemap->nm_squash_uid)) {
1490 for (idx = 0; idx < npages; idx++)
1491 lnb[idx].lnb_flags &=
1492 ~OBD_BRW_SYS_RESOURCE;
1495 nodemap_putref(nodemap);
1498 valid = OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLPROJID |
1499 OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME;
1500 la_from_obdo(&info->fti_attr, oa, valid);
1502 rc = ofd_commitrw_write(env, exp, ofd, fid, &info->fti_attr,
1503 oa, objcount, npages, lnb,
1504 oa->o_grant_used, old_rc);
1506 obdo_from_la(oa, &info->fti_attr,
1507 OFD_VALID_FLAGS | LA_GID | LA_UID |
1510 obdo_from_la(oa, &info->fti_attr, LA_GID | LA_UID |
1513 /* don't report overquota flag if we failed before reaching
1515 if (old_rc == 0 && (rc == 0 || rc == -EDQUOT)) {
1516 /* return the overquota flags to client */
1517 if (lnb[0].lnb_flags & OBD_BRW_OVER_USRQUOTA) {
1518 if (oa->o_valid & OBD_MD_FLFLAGS)
1519 oa->o_flags |= OBD_FL_NO_USRQUOTA;
1521 oa->o_flags = OBD_FL_NO_USRQUOTA;
1524 if (lnb[0].lnb_flags & OBD_BRW_OVER_GRPQUOTA) {
1525 if (oa->o_valid & OBD_MD_FLFLAGS)
1526 oa->o_flags |= OBD_FL_NO_GRPQUOTA;
1528 oa->o_flags = OBD_FL_NO_GRPQUOTA;
1530 if (lnb[0].lnb_flags & OBD_BRW_OVER_PRJQUOTA) {
1531 if (oa->o_valid & OBD_MD_FLFLAGS)
1532 oa->o_flags |= OBD_FL_NO_PRJQUOTA;
1534 oa->o_flags = OBD_FL_NO_PRJQUOTA;
1538 oa->o_flags |= OBD_FL_ROOT_SQUASH;
1540 oa->o_valid |= OBD_MD_FLFLAGS;
1541 oa->o_valid |= OBD_MD_FLALLQUOTA;
1545 * Update LVB after writing finish for server lock, see
1546 * comments in ldlm_lock_decref_internal(), If this is a
1547 * local lock on a server namespace and this was the last
1548 * reference, lock will be destroyed directly thus there
1549 * is no chance for ldlm_request_cancel() to update lvb.
1551 if (rc == 0 && (rnb[0].rnb_flags & OBD_BRW_SRVLOCK)) {
1552 ost_fid_build_resid(fid, &info->fti_resid);
1553 rs = ldlm_resource_get(ns, NULL, &info->fti_resid,
1556 ldlm_res_lvbo_update(rs, NULL, 1);
1557 ldlm_resource_putref(rs);
1561 /* Convert back to client IDs. LU-9671.
1562 * nodemap_get_from_exp() may fail due to nodemap deactivated,
1563 * server ID will be returned back to client in that case. */
1564 oa->o_uid = mapped_uid;
1565 oa->o_gid = mapped_gid;
1566 oa->o_projid = mapped_projid;
1567 } else if (cmd == OBD_BRW_READ) {
1568 /* see comment on LPROC_OFD_STATS_WRITE_BYTES usage above */
1569 ofd_counter_incr(exp, LPROC_OFD_STATS_READ_BYTES, jobid, nob);
1570 ofd_counter_incr(exp, LPROC_OFD_STATS_READ, jobid,
1571 ktime_us_delta(ktime_get(), kstart));
1573 rc = ofd_commitrw_read(env, ofd, fid, objcount,