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/
30 * Lustre is a trademark of Sun Microsystems, Inc.
34 * This file provides functions to handle IO requests from clients and
35 * also LFSCK routines to check parent file identifier (PFID) consistency.
37 * Author: Alexey Zhuravlev <alexey.zhuravlev@intel.com>
38 * Author: Fan Yong <fan.yong@intel.com>
41 #define DEBUG_SUBSYSTEM S_FILTER
43 #include <linux/kthread.h>
44 #include "ofd_internal.h"
45 #include <lustre_nodemap.h>
47 struct ofd_inconsistency_item {
48 struct list_head oii_list;
49 struct ofd_object *oii_obj;
50 struct filter_fid oii_ff;
54 * Verify single object for parent FID consistency.
56 * Part of LFSCK processing which checks single object PFID stored in extended
57 * attribute (XATTR) against real FID of MDT parent object received by LFSCK.
58 * This verifies that the OST object is being referenced by only a single MDT
61 * \param[in] env execution environment
62 * \param[in] ofd OFD device
63 * \param[in] oii object-related local data
64 * \param[in] lrl LFSCK request data
66 static void ofd_inconsistency_verify_one(const struct lu_env *env,
67 struct ofd_device *ofd,
68 struct ofd_inconsistency_item *oii,
69 struct lfsck_req_local *lrl)
71 struct ofd_object *fo = oii->oii_obj;
72 struct filter_fid *client_ff = &oii->oii_ff;
73 struct filter_fid *local_ff = &fo->ofo_ff;
76 LASSERT(fo->ofo_pfid_checking);
77 LASSERT(!fo->ofo_pfid_verified);
79 lrl->lrl_fid = fo->ofo_header.loh_fid; /* OST-object itself FID. */
80 lrl->lrl_ff_client = *client_ff; /* client given PFID. */
81 lrl->lrl_ff_local = *local_ff; /* OST local stored PFID. */
83 rc = lfsck_in_notify_local(env, ofd->ofd_osd, lrl, NULL);
84 ofd_write_lock(env, fo);
85 switch (lrl->lrl_status) {
90 CDEBUG(D_LFSCK, "%s: fail to verify OST local stored "
91 "PFID xattr for "DFID", the client given PFID "
92 DFID", OST local stored PFID "DFID": rc = %d\n",
93 ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
94 PFID(&client_ff->ff_parent),
95 PFID(&local_ff->ff_parent), rc);
97 fo->ofo_pfid_verified = 1;
99 case LPVS_INCONSISTENT:
102 ofd->ofd_inconsistency_self_detected++;
104 CDEBUG(D_LFSCK, "%s: fail to verify the client given "
105 "PFID for "DFID", the client given PFID "DFID
106 ", local stored PFID "DFID": rc = %d\n",
107 ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
108 PFID(&client_ff->ff_parent),
109 PFID(&local_ff->ff_parent), rc);
111 CDEBUG(D_LFSCK, "%s: both the client given PFID and "
112 "the OST local stored PFID are stale for the "
113 "OST-object "DFID", client given PFID is "DFID
114 ", local stored PFID is "DFID"\n",
115 ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
116 PFID(&client_ff->ff_parent),
117 PFID(&local_ff->ff_parent));
119 case LPVS_INCONSISTENT_TOFIX:
120 ofd->ofd_inconsistency_self_detected++;
122 ofd->ofd_inconsistency_self_repaired++;
123 CDEBUG(D_LFSCK, "%s: fixed the staled OST PFID xattr "
124 "for "DFID", with the client given PFID "DFID
125 ", the old stored PFID "DFID"\n",
126 ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
127 PFID(&client_ff->ff_parent),
128 PFID(&local_ff->ff_parent));
130 CDEBUG(D_LFSCK, "%s: fail to fix the OST PFID xattr "
131 "for "DFID", client given PFID "DFID", local "
132 "stored PFID "DFID": rc = %d\n",
133 ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
134 PFID(&client_ff->ff_parent),
135 PFID(&local_ff->ff_parent), rc);
137 local_ff->ff_parent = client_ff->ff_parent;
138 fo->ofo_pfid_verified = 1;
143 fo->ofo_pfid_checking = 0;
144 ofd_write_unlock(env, fo);
146 ofd_object_put(env, fo);
151 struct ofd_device *od_ofd;
152 struct lu_env od_env;
153 struct lfsck_req_local od_lrl;
154 struct completion *od_started;
158 #define TASK_IDLE TASK_INTERRUPTIBLE
162 * Verification thread to check parent FID consistency.
164 * Kernel thread to check consistency of parent FID for any
165 * new item added for checking by ofd_add_inconsistency_item().
167 * \param[in] args OFD device
169 * \retval 0 on successful thread termination
170 * \retval negative value if thread can't start
172 static int ofd_inconsistency_verification_main(void *_args)
174 struct oivm_args *args = _args;
175 struct lu_env *env = &args->od_env;
176 struct ofd_device *ofd = args->od_ofd;
177 struct ofd_inconsistency_item *oii;
178 struct lfsck_req_local *lrl = &args->od_lrl;
181 lrl->lrl_event = LEL_PAIRS_VERIFY_LOCAL;
182 lrl->lrl_active = LFSCK_TYPE_LAYOUT;
183 complete(args->od_started);
185 spin_lock(&ofd->ofd_inconsistency_lock);
186 while (({set_current_state(TASK_IDLE);
187 !kthread_should_stop(); })) {
189 while (!list_empty(&ofd->ofd_inconsistency_list)) {
190 __set_current_state(TASK_RUNNING);
191 oii = list_entry(ofd->ofd_inconsistency_list.next,
192 struct ofd_inconsistency_item,
194 list_del_init(&oii->oii_list);
195 spin_unlock(&ofd->ofd_inconsistency_lock);
196 ofd_inconsistency_verify_one(env, ofd, oii, lrl);
197 spin_lock(&ofd->ofd_inconsistency_lock);
200 spin_unlock(&ofd->ofd_inconsistency_lock);
202 spin_lock(&ofd->ofd_inconsistency_lock);
204 __set_current_state(TASK_RUNNING);
206 while (!list_empty(&ofd->ofd_inconsistency_list)) {
207 struct ofd_object *fo;
209 oii = list_entry(ofd->ofd_inconsistency_list.next,
210 struct ofd_inconsistency_item,
212 list_del_init(&oii->oii_list);
214 spin_unlock(&ofd->ofd_inconsistency_lock);
216 ofd_write_lock(env, fo);
217 fo->ofo_pfid_checking = 0;
218 ofd_write_unlock(env, fo);
220 ofd_object_put(env, fo);
222 spin_lock(&ofd->ofd_inconsistency_lock);
225 spin_unlock(&ofd->ofd_inconsistency_lock);
227 lu_env_fini(&args->od_env);
233 * Start parent FID verification thread.
235 * See ofd_inconsistency_verification_main().
237 * \param[in] ofd OFD device
239 * \retval 0 on successful start of thread
240 * \retval negative value on error
242 int ofd_start_inconsistency_verification_thread(struct ofd_device *ofd)
244 struct task_struct *task;
245 struct oivm_args *args;
246 DECLARE_COMPLETION_ONSTACK(started);
249 if (ofd->ofd_inconsistency_task)
255 rc = lu_env_init(&args->od_env, LCT_DT_THREAD);
262 args->od_started = &started;
263 task = kthread_create(ofd_inconsistency_verification_main, args,
264 "inconsistency_verification");
267 CERROR("%s: cannot start self_repair thread: rc = %d\n",
271 spin_lock(&ofd->ofd_inconsistency_lock);
272 if (ofd->ofd_inconsistency_task)
275 ofd->ofd_inconsistency_task = task;
276 spin_unlock(&ofd->ofd_inconsistency_lock);
281 wake_up_process(task);
282 wait_for_completion(&started);
286 lu_env_fini(&args->od_env);
294 * Stop parent FID verification thread.
296 * \param[in] ofd OFD device
298 * \retval 0 on successful start of thread
299 * \retval -EALREADY if thread is already stopped
301 int ofd_stop_inconsistency_verification_thread(struct ofd_device *ofd)
303 struct task_struct *task;
305 spin_lock(&ofd->ofd_inconsistency_lock);
306 task = ofd->ofd_inconsistency_task;
307 ofd->ofd_inconsistency_task = NULL;
308 spin_unlock(&ofd->ofd_inconsistency_lock);
318 * Add new item for parent FID verification.
320 * Prepare new verification item and pass it to the dedicated
321 * verification thread for further processing.
323 * \param[in] env execution environment
324 * \param[in] fo OFD object
325 * \param[in] oa OBDO structure with PFID
327 static void ofd_add_inconsistency_item(const struct lu_env *env,
328 struct ofd_object *fo, struct obdo *oa)
330 struct ofd_device *ofd = ofd_obj2dev(fo);
331 struct ofd_inconsistency_item *oii;
332 struct filter_fid *ff;
339 INIT_LIST_HEAD(&oii->oii_list);
340 lu_object_get(&fo->ofo_obj.do_lu);
343 ff->ff_parent.f_seq = oa->o_parent_seq;
344 ff->ff_parent.f_oid = oa->o_parent_oid;
345 ff->ff_parent.f_stripe_idx = oa->o_stripe_idx;
346 ff->ff_layout = oa->o_layout;
348 spin_lock(&ofd->ofd_inconsistency_lock);
349 if (fo->ofo_pfid_checking || fo->ofo_pfid_verified) {
350 spin_unlock(&ofd->ofd_inconsistency_lock);
356 fo->ofo_pfid_checking = 1;
357 if (list_empty(&ofd->ofd_inconsistency_list))
359 list_add_tail(&oii->oii_list, &ofd->ofd_inconsistency_list);
360 if (wakeup && ofd->ofd_inconsistency_task)
361 wake_up_process(ofd->ofd_inconsistency_task);
362 spin_unlock(&ofd->ofd_inconsistency_lock);
364 /* XXX: When the found inconsistency exceeds some threshold,
365 * we can trigger the LFSCK to scan part of the system
366 * or the whole system, which depends on how to define
367 * the threshold, a simple way maybe like that: define
368 * the absolute value of how many inconsisteny allowed
369 * to be repaired via self detect/repair mechanism, if
370 * exceeded, then trigger the LFSCK to scan the layout
371 * inconsistency within the whole system. */
375 * Verify parent FID of an object.
377 * Check the parent FID is sane and start extended
378 * verification procedure otherwise.
380 * \param[in] env execution environment
381 * \param[in] fo OFD object
382 * \param[in] oa OBDO structure with PFID
384 * \retval 0 on successful verification
385 * \retval -EINPROGRESS if PFID is being repaired
386 * \retval -EPERM if PFID was verified but still insane
388 int ofd_verify_ff(const struct lu_env *env, struct ofd_object *fo,
391 struct lu_fid *pfid = &fo->ofo_ff.ff_parent;
395 if (fid_is_sane(pfid)) {
396 if (likely(oa->o_parent_seq == pfid->f_seq &&
397 oa->o_parent_oid == pfid->f_oid &&
398 oa->o_stripe_idx == pfid->f_stripe_idx))
401 if (fo->ofo_pfid_verified)
405 /* The OST-object may be inconsistent, and we need further verification.
406 * To avoid block the RPC service thread, return -EINPROGRESS to client
407 * and make it retry later. */
408 if (fo->ofo_pfid_checking)
409 RETURN(-EINPROGRESS);
411 rc = ofd_object_ff_load(env, fo);
418 if (likely(oa->o_parent_seq == pfid->f_seq &&
419 oa->o_parent_oid == pfid->f_oid &&
420 oa->o_stripe_idx == pfid->f_stripe_idx))
423 /* Push it to the dedicated thread for further verification. */
424 ofd_add_inconsistency_item(env, fo, oa);
426 RETURN(-EINPROGRESS);
430 * FLR: verify the layout version of object.
432 * \param[in] env execution environment
433 * \param[in] fo OFD object
434 * \param[in] oa OBDO structure with layout version
436 * \retval 0 on successful verification
437 * \retval -EINPROGRESS layout version is in transfer
438 * \retval -ESTALE the layout version on client is stale
440 int ofd_verify_layout_version(const struct lu_env *env,
441 struct ofd_object *fo, const struct obdo *oa)
443 __u32 layout_version;
447 if (unlikely(OBD_FAIL_CHECK(OBD_FAIL_OST_SKIP_LV_CHECK)))
450 rc = ofd_object_ff_load(env, fo);
457 layout_version = fo->ofo_ff.ff_layout_version;
458 if (oa->o_layout_version >= layout_version &&
459 oa->o_layout_version <= layout_version + fo->ofo_ff.ff_range)
462 /* normal traffic, decide if to return ESTALE or EINPROGRESS */
463 layout_version &= ~LU_LAYOUT_RESYNC;
465 /* this update is not legitimate */
466 if ((oa->o_layout_version & ~LU_LAYOUT_RESYNC) <= layout_version)
467 GOTO(out, rc = -ESTALE);
469 /* layout version may not be transmitted yet */
470 if ((oa->o_layout_version & ~LU_LAYOUT_RESYNC) > layout_version)
471 GOTO(out, rc = -EINPROGRESS);
476 CDEBUG(D_INODE, DFID " verify layout version: %u vs. %u/%u, rc: %d\n",
477 PFID(lu_object_fid(&fo->ofo_obj.do_lu)),
478 oa->o_layout_version, fo->ofo_ff.ff_layout_version,
479 fo->ofo_ff.ff_range, rc);
485 * Lazy ATIME update to refresh atime every ofd_atime_diff
486 * seconds so that external scanning tool can see it actual
487 * within that period and be able to identify accessed files
489 static void ofd_handle_atime(const struct lu_env *env, struct ofd_device *ofd,
490 struct ofd_object *fo, time64_t atime)
497 if (ofd->ofd_atime_diff == 0)
500 la = &ofd_info(env)->fti_attr2;
501 o = ofd_object_child(fo);
503 if (unlikely(fo->ofo_atime_ondisk == 0)) {
504 rc = dt_attr_get(env, o, la);
507 LASSERT(la->la_valid & LA_ATIME);
508 if (la->la_atime == 0)
509 la->la_atime = la->la_mtime;
510 fo->ofo_atime_ondisk = la->la_atime;
512 if (atime - fo->ofo_atime_ondisk < ofd->ofd_atime_diff)
515 /* atime hasn't been updated too long, update it */
516 fo->ofo_atime_ondisk = atime;
518 th = ofd_trans_create(env, ofd);
520 CERROR("%s: cannot create transaction: rc = %d\n",
521 ofd_name(ofd), (int)PTR_ERR(th));
525 la->la_valid = LA_ATIME;
526 rc = dt_declare_attr_set(env, o, la, th);
530 rc = dt_trans_start_local(env, ofd->ofd_osd , th);
532 CERROR("%s: cannot start transaction: rc = %d\n",
537 ofd_read_lock(env, fo);
538 if (ofd_object_exists(fo)) {
539 la->la_atime = fo->ofo_atime_ondisk;
540 rc = dt_attr_set(env, o, la, th);
543 ofd_read_unlock(env, fo);
546 ofd_trans_stop(env, ofd, th, rc);
550 * Prepare buffers for read request processing.
552 * This function converts remote buffers from client to local buffers
553 * and prepares the latter.
555 * \param[in] env execution environment
556 * \param[in] exp OBD export of client
557 * \param[in] ofd OFD device
558 * \param[in] fid FID of object
559 * \param[in] la object attributes
560 * \param[in] oa OBDO structure from client
561 * \param[in] niocount number of remote buffers
562 * \param[in] rnb remote buffers
563 * \param[in] nr_local number of local buffers
564 * \param[in] lnb local buffers
565 * \param[in] jobid job ID name
567 * \retval 0 on successful prepare
568 * \retval negative value on error
570 static int ofd_preprw_read(const struct lu_env *env, struct obd_export *exp,
571 struct ofd_device *ofd, const struct lu_fid *fid,
572 struct lu_attr *la, struct obdo *oa, int niocount,
573 struct niobuf_remote *rnb, int *nr_local,
574 struct niobuf_local *lnb, char *jobid)
576 struct ofd_object *fo;
577 int i, j, rc, tot_bytes = 0;
578 enum dt_bufs_type dbt = DT_BUFS_TYPE_READ;
579 int maxlnb = *nr_local;
581 ktime_t kstart = ktime_get();
584 LASSERT(env != NULL);
586 fo = ofd_object_find(env, ofd, fid);
591 ofd_info(env)->fti_obj = fo;
593 if (oa->o_valid & OBD_MD_FLATIME)
594 ofd_handle_atime(env, ofd, fo, oa->o_atime);
596 ofd_read_lock(env, fo);
597 if (!ofd_object_exists(fo))
598 GOTO(unlock, rc = -ENOENT);
600 if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
601 rc = ofd_verify_ff(env, fo, oa);
606 if (ptlrpc_connection_is_local(exp->exp_connection))
607 dbt |= DT_BUFS_TYPE_LOCAL;
612 for (*nr_local = 0, i = 0, j = 0; i < niocount; i++) {
613 begin = min_t(__u64, begin, rnb[i].rnb_offset);
614 end = max_t(__u64, end, rnb[i].rnb_offset + rnb[i].rnb_len);
616 if (OBD_FAIL_CHECK(OBD_FAIL_OST_2BIG_NIOBUF))
617 rnb[i].rnb_len = 100 * 1024 * 1024;
619 rc = dt_bufs_get(env, ofd_object_child(fo), rnb + i,
620 lnb + j, maxlnb, dbt);
621 if (unlikely(rc < 0))
623 LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
624 /* correct index for local buffers to continue with */
628 LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
629 tot_bytes += rnb[i].rnb_len;
632 LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
633 rc = dt_read_prep(env, ofd_object_child(fo), lnb, *nr_local);
639 .f_seq = oa->o_parent_seq,
640 .f_oid = oa->o_parent_oid,
641 .f_ver = oa->o_stripe_idx,
648 ofd_counter_incr(exp, LPROC_OFD_STATS_READ_BYTES, jobid, tot_bytes);
649 ofd_counter_incr(exp, LPROC_OFD_STATS_READ, jobid,
650 ktime_us_delta(ktime_get(), kstart));
654 dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
656 ofd_read_unlock(env, fo);
657 ofd_object_put(env, fo);
662 * Prepare buffers for write request processing.
664 * This function converts remote buffers from client to local buffers
665 * and prepares the latter. If there is recovery in progress and required
666 * object is missing then it can be re-created before write.
668 * \param[in] env execution environment
669 * \param[in] exp OBD export of client
670 * \param[in] ofd OFD device
671 * \param[in] fid FID of object
672 * \param[in] la object attributes
673 * \param[in] oa OBDO structure from client
674 * \param[in] objcount always 1
675 * \param[in] obj object data
676 * \param[in] rnb remote buffers
677 * \param[in] nr_local number of local buffers
678 * \param[in] lnb local buffers
679 * \param[in] jobid job ID name
681 * \retval 0 on successful prepare
682 * \retval negative value on error
684 static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
685 struct ofd_device *ofd, const struct lu_fid *fid,
686 struct lu_attr *la, struct obdo *oa,
687 int objcount, struct obd_ioobj *obj,
688 struct niobuf_remote *rnb, int *nr_local,
689 struct niobuf_local *lnb, char *jobid)
691 struct ofd_object *fo;
692 int i, j, k, rc = 0, tot_bytes = 0;
693 enum dt_bufs_type dbt = DT_BUFS_TYPE_WRITE;
694 int maxlnb = *nr_local;
696 ktime_t kstart = ktime_get();
697 struct range_lock *range = &ofd_info(env)->fti_write_range;
700 LASSERT(env != NULL);
701 LASSERT(objcount == 1);
703 if (unlikely(exp->exp_obd->obd_recovering)) {
704 u64 seq = fid_seq(fid);
705 u64 oid = fid_oid(fid);
706 struct ofd_seq *oseq;
708 oseq = ofd_seq_load(env, ofd, seq);
710 CERROR("%s: Can't find FID Sequence %#llx: rc = %d\n",
711 ofd_name(ofd), seq, (int)PTR_ERR(oseq));
712 GOTO(out, rc = -EINVAL);
715 if (oid > ofd_seq_last_oid(oseq)) {
719 mutex_lock(&oseq->os_create_lock);
720 diff = oid - ofd_seq_last_oid(oseq);
722 /* Do sync create if the seq is about to used up */
723 if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
724 if (unlikely(oid >= IDIF_MAX_OID - 1))
726 } else if (fid_seq_is_norm(seq)) {
728 LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
731 CERROR("%s : invalid o_seq "DOSTID"\n",
732 ofd_name(ofd), POSTID(&oa->o_oi));
733 mutex_unlock(&oseq->os_create_lock);
734 ofd_seq_put(env, oseq);
735 GOTO(out, rc = -EINVAL);
739 u64 next_id = ofd_seq_last_oid(oseq) + 1;
740 int count = ofd_precreate_batch(ofd, diff);
742 rc = ofd_precreate_objects(env, ofd, next_id,
745 mutex_unlock(&oseq->os_create_lock);
746 ofd_seq_put(env, oseq);
753 mutex_unlock(&oseq->os_create_lock);
756 ofd_seq_put(env, oseq);
759 /* Process incoming grant info, set OBD_BRW_GRANTED flag and grant some
760 * space back if possible, we have to do this outside of the lock as
761 * grant preparation may need to sync whole fs thus wait for all the
762 * transactions to complete. */
763 tgt_grant_prepare_write(env, exp, oa, rnb, obj->ioo_bufcnt);
765 fo = ofd_object_find(env, ofd, fid);
767 GOTO(out, rc = PTR_ERR(fo));
770 ofd_info(env)->fti_obj = fo;
772 ofd_read_lock(env, fo);
773 if (!ofd_object_exists(fo)) {
774 CERROR("%s: BRW to missing obj "DOSTID"\n",
775 exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
776 ofd_read_unlock(env, fo);
777 ofd_object_put(env, fo);
778 GOTO(out, rc = -ENOENT);
781 if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
782 rc = ofd_verify_ff(env, fo, oa);
784 ofd_read_unlock(env, fo);
785 ofd_object_put(env, fo);
790 /* need to verify layout version */
791 if (oa->o_valid & OBD_MD_LAYOUT_VERSION) {
792 rc = ofd_verify_layout_version(env, fo, oa);
794 ofd_read_unlock(env, fo);
795 ofd_object_put(env, fo);
799 oa->o_valid &= ~OBD_MD_LAYOUT_VERSION;
802 if (ptlrpc_connection_is_local(exp->exp_connection))
803 dbt |= DT_BUFS_TYPE_LOCAL;
808 /* parse remote buffers to local buffers and prepare the latter */
809 for (*nr_local = 0, i = 0, j = 0; i < obj->ioo_bufcnt; i++) {
810 begin = min_t(__u64, begin, rnb[i].rnb_offset);
811 end = max_t(__u64, end, rnb[i].rnb_offset + rnb[i].rnb_len);
813 if (OBD_FAIL_CHECK(OBD_FAIL_OST_2BIG_NIOBUF))
814 rnb[i].rnb_len += PAGE_SIZE;
815 rc = dt_bufs_get(env, ofd_object_child(fo),
816 rnb + i, lnb + j, maxlnb, dbt);
817 if (unlikely(rc < 0))
819 LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
820 /* correct index for local buffers to continue with */
821 for (k = 0; k < rc; k++) {
822 lnb[j+k].lnb_flags = rnb[i].rnb_flags;
823 lnb[j+k].lnb_flags &= ~OBD_BRW_LOCALS;
824 if (!(rnb[i].rnb_flags & OBD_BRW_GRANTED))
825 lnb[j+k].lnb_rc = -ENOSPC;
830 LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
831 tot_bytes += rnb[i].rnb_len;
833 LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
835 rc = dt_write_prep(env, ofd_object_child(fo), lnb, *nr_local);
836 if (unlikely(rc != 0))
839 ofd_read_unlock(env, fo);
843 .f_seq = oa->o_parent_seq,
844 .f_oid = oa->o_parent_oid,
845 .f_ver = oa->o_stripe_idx,
853 * Reordering precautions: make sure that request processing that
854 * was able to receive its bulk data should not get reordered with
855 * overlapping BRW requests, e.g.
856 * 1) BRW1 sent, bulk data received, but disk I/O delayed
857 * 2) BRW1 resent and fully processed
858 * 3) the page was unlocked on the client and its writeback bit reset
859 * 4) BRW2 sent and fully processed
860 * 5) BRW1 processing wakes up and writes stale data to disk
861 * If on step 1 bulk data was not received, client resend will invalidate
862 * its bulk descriptor and the RPC will be dropped due to failed bulk
863 * transfer, which is just fine.
865 range_lock_init(range,
867 rnb[obj->ioo_bufcnt - 1].rnb_offset +
868 rnb[obj->ioo_bufcnt - 1].rnb_len - 1);
869 range_lock(&fo->ofo_write_tree, range);
870 ofd_info(env)->fti_range_locked = 1;
872 ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE_BYTES, jobid, tot_bytes);
873 ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE, jobid,
874 ktime_us_delta(ktime_get(), kstart));
877 dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
878 ofd_read_unlock(env, fo);
879 ofd_object_put(env, fo);
880 /* tgt_grant_prepare_write() was called, so we must commit */
881 tgt_grant_commit(exp, oa->o_grant_used, rc);
883 /* let's still process incoming grant information packed in the oa,
884 * but without enforcing grant since we won't proceed with the write.
885 * Just like a read request actually. */
886 tgt_grant_prepare_read(env, exp, oa);
891 * Prepare bulk IO requests for processing.
893 * This function does initial checks of IO and calls corresponding
894 * functions for read/write processing.
896 * \param[in] env execution environment
897 * \param[in] cmd IO type (read/write)
898 * \param[in] exp OBD export of client
899 * \param[in] oa OBDO structure from request
900 * \param[in] objcount always 1
901 * \param[in] obj object data
902 * \param[in] rnb remote buffers
903 * \param[in] nr_local number of local buffers
904 * \param[in] lnb local buffers
906 * \retval 0 on successful prepare
907 * \retval negative value on error
909 int ofd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
910 struct obdo *oa, int objcount, struct obd_ioobj *obj,
911 struct niobuf_remote *rnb, int *nr_local,
912 struct niobuf_local *lnb)
914 struct tgt_session_info *tsi = tgt_ses_info(env);
915 struct ofd_device *ofd = ofd_exp(exp);
916 struct ofd_thread_info *info;
918 const struct lu_fid *fid = &oa->o_oi.oi_fid;
921 if (*nr_local > PTLRPC_MAX_BRW_PAGES) {
922 CERROR("%s: bulk has too many pages %d, which exceeds the maximum pages per RPC of %d\n",
923 exp->exp_obd->obd_name, *nr_local, PTLRPC_MAX_BRW_PAGES);
927 if (tgt_ses_req(tsi) == NULL) { /* echo client case */
928 info = ofd_info_init(env, exp);
931 info = tsi2ofd_info(tsi);
932 jobid = tsi->tsi_jobid;
937 if (OBD_FAIL_CHECK(OBD_FAIL_SRV_ENOENT)) {
938 struct ofd_seq *oseq;
940 oseq = ofd_seq_load(env, ofd, ostid_seq(&oa->o_oi));
942 CERROR("%s: Can not find seq for "DOSTID
943 ": rc = %ld\n", ofd_name(ofd), POSTID(&oa->o_oi),
948 if (oseq->os_destroys_in_progress == 0) {
949 /* don't fail lookups for orphan recovery, it causes
950 * later LBUGs when objects still exist during
952 ofd_seq_put(env, oseq);
955 ofd_seq_put(env, oseq);
958 LASSERT(objcount == 1);
959 LASSERT(obj->ioo_bufcnt > 0);
961 if (cmd == OBD_BRW_WRITE) {
962 la_from_obdo(&info->fti_attr, oa, OBD_MD_FLGETATTR);
963 rc = ofd_preprw_write(env, exp, ofd, fid, &info->fti_attr, oa,
964 objcount, obj, rnb, nr_local, lnb, jobid);
965 } else if (cmd == OBD_BRW_READ) {
966 tgt_grant_prepare_read(env, exp, oa);
967 rc = ofd_preprw_read(env, exp, ofd, fid, &info->fti_attr, oa,
968 obj->ioo_bufcnt, rnb, nr_local, lnb,
971 CERROR("%s: wrong cmd %d received!\n",
972 exp->exp_obd->obd_name, cmd);
979 * Drop reference on local buffers for read bulk IO.
981 * This will free all local buffers use by this read request.
983 * \param[in] env execution environment
984 * \param[in] ofd OFD device
985 * \param[in] fid object FID
986 * \param[in] objcount always 1
987 * \param[in] niocount number of local buffers
988 * \param[in] lnb local buffers
990 * \retval 0 on successful execution
991 * \retval negative value on error
994 ofd_commitrw_read(const struct lu_env *env, struct ofd_device *ofd,
995 const struct lu_fid *fid, int objcount, int niocount,
996 struct niobuf_local *lnb)
998 struct ofd_object *fo;
1002 LASSERT(niocount > 0);
1004 fo = ofd_info(env)->fti_obj;
1005 LASSERT(fo != NULL);
1006 LASSERT(ofd_object_exists(fo));
1007 dt_bufs_put(env, ofd_object_child(fo), lnb, niocount);
1009 ofd_read_unlock(env, fo);
1010 ofd_object_put(env, fo);
1016 * Set attributes of object during write bulk IO processing.
1018 * Change object attributes and write parent FID into extended
1019 * attributes when needed.
1021 * \param[in] env execution environment
1022 * \param[in] ofd OFD device
1023 * \param[in] ofd_obj OFD object
1024 * \param[in] la object attributes
1025 * \param[in] oa obdo
1027 * \retval 0 on successful attributes update
1028 * \retval negative value on error
1031 ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
1032 struct ofd_object *ofd_obj, struct lu_attr *la,
1035 struct ofd_thread_info *info = ofd_info(env);
1036 struct filter_fid *ff = &info->fti_mds_fid;
1037 __u64 valid = la->la_valid;
1039 struct dt_object *dt_obj;
1047 dt_obj = ofd_object_child(ofd_obj);
1048 LASSERT(dt_obj != NULL);
1050 la->la_valid &= LA_UID | LA_GID | LA_PROJID;
1052 rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
1056 if (!la->la_valid && !(oa->o_valid &
1057 (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
1058 /* no attributes to set */
1061 th = ofd_trans_create(env, ofd);
1063 GOTO(out, rc = PTR_ERR(th));
1066 rc = dt_declare_attr_set(env, dt_obj, la, th);
1071 if (oa->o_valid & (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT |
1072 OBD_MD_LAYOUT_VERSION)) {
1073 rc = dt_declare_xattr_set(env, dt_obj, &info->fti_buf,
1074 XATTR_NAME_FID, 0, th);
1078 /* We don't need a transno for this operation which will be re-executed
1079 * anyway when the OST_WRITE (with a transno assigned) is replayed */
1080 rc = dt_trans_start_local(env, ofd->ofd_osd , th);
1084 ofd_read_lock(env, ofd_obj);
1086 rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
1088 GOTO(out_unlock, rc);
1090 if (!la->la_valid && !(oa->o_valid &
1091 (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
1092 /* no attributes to set */
1093 GOTO(out_unlock, rc = 0);
1097 /* set uid/gid/projid */
1099 rc = dt_attr_set(env, dt_obj, la, th);
1101 GOTO(out_unlock, rc);
1104 fl = ofd_object_ff_update(env, ofd_obj, oa, ff);
1106 GOTO(out_unlock, rc = fl);
1108 /* set filter fid EA.
1109 * FIXME: it holds read lock of ofd object to modify the XATTR_NAME_FID
1110 * while the write lock should be held. However, it should work because
1111 * write RPCs only modify ff_{parent,layout} and those information will
1112 * be the same from all the write RPCs. The reason that fl is not used
1113 * in dt_xattr_set() is to allow this race. */
1114 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NOPFID))
1115 GOTO(out_unlock, rc);
1116 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR1))
1117 ff->ff_parent.f_oid = cpu_to_le32(1UL << 31);
1118 else if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR2))
1119 le32_add_cpu(&ff->ff_parent.f_oid, -1);
1121 info->fti_buf.lb_buf = ff;
1122 info->fti_buf.lb_len = sizeof(*ff);
1123 rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID, 0, th);
1125 filter_fid_le_to_cpu(&ofd_obj->ofo_ff, ff, sizeof(*ff));
1127 GOTO(out_unlock, rc);
1130 ofd_read_unlock(env, ofd_obj);
1132 dt_trans_stop(env, ofd->ofd_osd, th);
1134 la->la_valid = valid;
1138 struct ofd_soft_sync_callback {
1139 struct dt_txn_commit_cb ossc_cb;
1140 struct obd_export *ossc_exp;
1144 * Callback function for "soft sync" update.
1146 * Reset fed_soft_sync_count upon committing the "soft_sync" update.
1147 * See ofd_soft_sync_cb_add() below for more details on soft sync.
1149 * \param[in] env execution environment
1150 * \param[in] th transaction handle
1151 * \param[in] cb callback data
1152 * \param[in] err error code
1154 static void ofd_cb_soft_sync(struct lu_env *env, struct thandle *th,
1155 struct dt_txn_commit_cb *cb, int err)
1157 struct ofd_soft_sync_callback *ossc;
1159 ossc = container_of(cb, struct ofd_soft_sync_callback, ossc_cb);
1161 CDEBUG(D_INODE, "export %p soft sync count is reset\n", ossc->ossc_exp);
1162 atomic_set(&ossc->ossc_exp->exp_filter_data.fed_soft_sync_count, 0);
1164 class_export_cb_put(ossc->ossc_exp);
1169 * Add callback for "soft sync" processing.
1171 * The "soft sync" mechanism does asynchronous commit when OBD_BRW_SOFT_SYNC
1172 * flag is set in client buffers. The intention is for this operation to
1173 * commit pages belonging to a client which has "too many" outstanding
1174 * unstable pages in its cache. See LU-2139 for details.
1176 * This function adds callback to be called when commit is done.
1178 * \param[in] th transaction handle
1179 * \param[in] exp OBD export of client
1181 * \retval 0 on successful callback adding
1182 * \retval negative value on error
1184 static int ofd_soft_sync_cb_add(struct thandle *th, struct obd_export *exp)
1186 struct ofd_soft_sync_callback *ossc;
1187 struct dt_txn_commit_cb *dcb;
1190 OBD_ALLOC_PTR(ossc);
1194 ossc->ossc_exp = class_export_cb_get(exp);
1196 dcb = &ossc->ossc_cb;
1197 dcb->dcb_func = ofd_cb_soft_sync;
1198 INIT_LIST_HEAD(&dcb->dcb_linkage);
1199 strlcpy(dcb->dcb_name, "ofd_cb_soft_sync", sizeof(dcb->dcb_name));
1201 rc = dt_trans_cb_add(th, dcb);
1203 class_export_cb_put(exp);
1211 * Commit bulk IO buffers to the storage.
1213 * This function finalizes write IO processing by writing data to the disk.
1214 * That write can be synchronous or asynchronous depending on buffers flags.
1216 * \param[in] env execution environment
1217 * \param[in] exp OBD export of client
1218 * \param[in] ofd OFD device
1219 * \param[in] fid FID of object
1220 * \param[in] la object attributes
1221 * \param[in] ff parent FID of object
1222 * \param[in] objcount always 1
1223 * \param[in] niocount number of local buffers
1224 * \param[in] lnb local buffers
1225 * \param[in] granted grant space consumed for the bulk I/O
1226 * \param[in] old_rc result of processing at this point
1228 * \retval 0 on successful commit
1229 * \retval negative value on error
1232 ofd_commitrw_write(const struct lu_env *env, struct obd_export *exp,
1233 struct ofd_device *ofd, const struct lu_fid *fid,
1234 struct lu_attr *la, struct obdo *oa, int objcount,
1235 int niocount, struct niobuf_local *lnb,
1236 unsigned long granted, int old_rc)
1238 struct ofd_thread_info *info = ofd_info(env);
1239 struct filter_export_data *fed = &exp->exp_filter_data;
1240 struct ofd_object *fo;
1241 struct dt_object *o;
1247 bool soft_sync = false;
1248 bool cb_registered = false;
1249 bool fake_write = false;
1250 struct range_lock *range = &ofd_info(env)->fti_write_range;
1254 LASSERT(objcount == 1);
1256 fo = ofd_info(env)->fti_obj;
1257 LASSERT(fo != NULL);
1259 o = ofd_object_child(fo);
1263 GOTO(out, rc = old_rc);
1264 if (!ofd_object_exists(fo))
1265 GOTO(out, rc = -ENOENT);
1268 * The first write to each object must set some attributes. It is
1269 * important to set the uid/gid before calling
1270 * dt_declare_write_commit() since quota enforcement is now handled in
1273 rc = ofd_write_attr_set(env, ofd, fo, la, oa);
1277 la->la_valid &= LA_ATIME | LA_MTIME | LA_CTIME;
1279 /* do fake write, to simulate the write case for performance testing */
1280 if (OBD_FAIL_CHECK(OBD_FAIL_OST_FAKE_RW)) {
1281 struct niobuf_local *last = &lnb[niocount - 1];
1282 __u64 file_size = last->lnb_file_offset + last->lnb_len;
1283 __u64 valid = la->la_valid;
1285 la->la_valid = LA_SIZE;
1287 rc = dt_attr_get(env, o, la);
1288 if (rc < 0 && rc != -ENOENT)
1291 if (file_size < la->la_size)
1292 file_size = la->la_size;
1294 /* dirty inode by setting file size */
1295 la->la_valid = valid | LA_SIZE;
1296 la->la_size = file_size;
1302 th = ofd_trans_create(env, ofd);
1304 GOTO(out, rc = PTR_ERR(th));
1306 th->th_sync |= ofd->ofd_sync_journal;
1307 if (th->th_sync == 0) {
1308 for (i = 0; i < niocount; i++) {
1309 if (!(lnb[i].lnb_flags & OBD_BRW_ASYNC)) {
1313 if (lnb[i].lnb_flags & OBD_BRW_SOFT_SYNC)
1318 if (OBD_FAIL_CHECK(OBD_FAIL_OST_DQACQ_NET))
1319 GOTO(out_stop, rc = -EINPROGRESS);
1321 if (likely(!fake_write)) {
1322 rc = dt_declare_write_commit(env, o, lnb, niocount, th);
1327 /* don't update atime on disk if it is older */
1328 if (la->la_valid & LA_ATIME && la->la_atime <= fo->ofo_atime_ondisk)
1329 la->la_valid &= ~LA_ATIME;
1332 /* update [mac]time if needed */
1333 rc = dt_declare_attr_set(env, o, la, th);
1338 rc = ofd_trans_start(env, ofd, fo, th);
1342 ofd_read_lock(env, fo);
1343 if (!ofd_object_exists(fo))
1344 GOTO(out_unlock, rc = -ENOENT);
1346 /* Don't update timestamps if this write is older than a
1347 * setattr which modifies the timestamps. b=10150 */
1348 if (la->la_valid && tgt_fmd_check(exp, fid, info->fti_xid)) {
1349 rc = dt_attr_set(env, o, la, th);
1351 GOTO(out_unlock, rc);
1352 if (la->la_valid & LA_ATIME)
1353 fo->ofo_atime_ondisk = la->la_atime;
1356 if (likely(!fake_write)) {
1357 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_OST_WR_ATTR_DELAY,
1358 OBD_FAIL_ONCE, cfs_fail_val);
1359 rc = dt_write_commit(env, o, lnb, niocount, th, oa->o_size);
1361 restart = th->th_restart_tran;
1362 GOTO(out_unlock, rc);
1366 /* get attr to return */
1367 rc = dt_attr_get(env, o, la);
1370 ofd_read_unlock(env, fo);
1372 /* Force commit to make the just-deleted blocks
1373 * reusable. LU-456 */
1377 /* do this before trans stop in case commit has finished */
1378 if (!th->th_sync && soft_sync && !cb_registered) {
1379 ofd_soft_sync_cb_add(th, exp);
1380 cb_registered = true;
1383 if (rc == 0 && granted > 0) {
1384 if (tgt_grant_commit_cb_add(th, exp, granted) == 0)
1388 rc2 = ofd_trans_stop(env, ofd, th, restart ? 0 : rc);
1391 if (rc == -ENOSPC && retries++ < 3) {
1392 CDEBUG(D_INODE, "retry after force commit, retries:%d\n",
1400 if (retries % 10000 == 0)
1401 CERROR("%s: restart IO write too many times: %d\n",
1402 ofd_name(ofd), retries);
1403 CDEBUG(D_INODE, "retry transaction, retries:%d\n",
1408 /* reset fed_soft_sync_count upon non-SOFT_SYNC RPC */
1409 atomic_set(&fed->fed_soft_sync_count, 0);
1410 else if (atomic_inc_return(&fed->fed_soft_sync_count) ==
1411 ofd->ofd_soft_sync_limit)
1412 dt_commit_async(env, ofd->ofd_osd);
1415 if (info->fti_range_locked) {
1416 range_unlock(&fo->ofo_write_tree, range);
1417 info->fti_range_locked = 0;
1419 dt_bufs_put(env, o, lnb, niocount);
1420 ofd_object_put(env, fo);
1422 tgt_grant_commit(exp, granted, old_rc);
1427 * Commit bulk IO to the storage.
1429 * This is companion function to the ofd_preprw(). It finishes bulk IO
1430 * request processing by committing buffers to the storage (WRITE) and/or
1431 * freeing those buffers (read/write). See ofd_commitrw_read() and
1432 * ofd_commitrw_write() for details about each type of IO.
1434 * \param[in] env execution environment
1435 * \param[in] cmd IO type (READ/WRITE)
1436 * \param[in] exp OBD export of client
1437 * \param[in] oa OBDO structure from client
1438 * \param[in] objcount always 1
1439 * \param[in] obj object data
1440 * \param[in] rnb remote buffers
1441 * \param[in] npages number of local buffers
1442 * \param[in] lnb local buffers
1443 * \param[in] old_rc result of processing at this point
1445 * \retval 0 on successful commit
1446 * \retval negative value on error
1448 int ofd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1449 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1450 struct niobuf_remote *rnb, int npages,
1451 struct niobuf_local *lnb, int old_rc)
1453 struct ofd_thread_info *info = ofd_info(env);
1454 struct ofd_device *ofd = ofd_exp(exp);
1455 const struct lu_fid *fid = &oa->o_oi.oi_fid;
1456 struct ldlm_namespace *ns = ofd->ofd_namespace;
1457 struct ldlm_resource *rs = NULL;
1461 LASSERT(npages > 0);
1463 if (cmd == OBD_BRW_WRITE) {
1464 struct lu_nodemap *nodemap;
1466 valid = OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLPROJID |
1467 OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME;
1468 la_from_obdo(&info->fti_attr, oa, valid);
1470 rc = ofd_commitrw_write(env, exp, ofd, fid, &info->fti_attr,
1471 oa, objcount, npages, lnb,
1472 oa->o_grant_used, old_rc);
1474 obdo_from_la(oa, &info->fti_attr,
1475 OFD_VALID_FLAGS | LA_GID | LA_UID |
1478 obdo_from_la(oa, &info->fti_attr, LA_GID | LA_UID |
1481 /* don't report overquota flag if we failed before reaching
1483 if (old_rc == 0 && (rc == 0 || rc == -EDQUOT)) {
1484 /* return the overquota flags to client */
1485 if (lnb[0].lnb_flags & OBD_BRW_OVER_USRQUOTA) {
1486 if (oa->o_valid & OBD_MD_FLFLAGS)
1487 oa->o_flags |= OBD_FL_NO_USRQUOTA;
1489 oa->o_flags = OBD_FL_NO_USRQUOTA;
1492 if (lnb[0].lnb_flags & OBD_BRW_OVER_GRPQUOTA) {
1493 if (oa->o_valid & OBD_MD_FLFLAGS)
1494 oa->o_flags |= OBD_FL_NO_GRPQUOTA;
1496 oa->o_flags = OBD_FL_NO_GRPQUOTA;
1498 if (lnb[0].lnb_flags & OBD_BRW_OVER_PRJQUOTA) {
1499 if (oa->o_valid & OBD_MD_FLFLAGS)
1500 oa->o_flags |= OBD_FL_NO_PRJQUOTA;
1502 oa->o_flags = OBD_FL_NO_PRJQUOTA;
1505 oa->o_valid |= OBD_MD_FLFLAGS;
1506 oa->o_valid |= OBD_MD_FLALLQUOTA;
1510 * Update LVB after writing finish for server lock, see
1511 * comments in ldlm_lock_decref_internal(), If this is a
1512 * local lock on a server namespace and this was the last
1513 * reference, lock will be destroyed directly thus there
1514 * is no chance for ldlm_request_cancel() to update lvb.
1516 if (rc == 0 && (rnb[0].rnb_flags & OBD_BRW_SRVLOCK)) {
1517 ost_fid_build_resid(fid, &info->fti_resid);
1518 rs = ldlm_resource_get(ns, NULL, &info->fti_resid,
1521 ldlm_res_lvbo_update(rs, NULL, 1);
1522 ldlm_resource_putref(rs);
1526 /* Convert back to client IDs. LU-9671.
1527 * nodemap_get_from_exp() may fail due to nodemap deactivated,
1528 * server ID will be returned back to client in that case. */
1529 nodemap = nodemap_get_from_exp(exp);
1530 if (nodemap != NULL && !IS_ERR(nodemap)) {
1531 oa->o_uid = nodemap_map_id(nodemap, NODEMAP_UID,
1532 NODEMAP_FS_TO_CLIENT,
1534 oa->o_gid = nodemap_map_id(nodemap, NODEMAP_GID,
1535 NODEMAP_FS_TO_CLIENT,
1537 nodemap_putref(nodemap);
1539 } else if (cmd == OBD_BRW_READ) {
1540 rc = ofd_commitrw_read(env, ofd, fid, objcount,