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 * Verification thread to check parent FID consistency.
153 * Kernel thread to check consistency of parent FID for any
154 * new item added for checking by ofd_add_inconsistency_item().
156 * \param[in] args OFD device
158 * \retval 0 on successful thread termination
159 * \retval negative value if thread can't start
161 static int ofd_inconsistency_verification_main(void *args)
164 struct ofd_device *ofd = args;
165 struct ptlrpc_thread *thread = &ofd->ofd_inconsistency_thread;
166 struct ofd_inconsistency_item *oii;
167 struct lfsck_req_local *lrl = NULL;
168 struct l_wait_info lwi = { 0 };
172 rc = lu_env_init(&env, LCT_DT_THREAD);
173 spin_lock(&ofd->ofd_inconsistency_lock);
174 thread_set_flags(thread, rc ? SVC_STOPPED : SVC_RUNNING);
175 wake_up_all(&thread->t_ctl_waitq);
176 spin_unlock(&ofd->ofd_inconsistency_lock);
182 GOTO(out_unlocked, rc = -ENOMEM);
184 lrl->lrl_event = LEL_PAIRS_VERIFY_LOCAL;
185 lrl->lrl_active = LFSCK_TYPE_LAYOUT;
187 spin_lock(&ofd->ofd_inconsistency_lock);
189 if (unlikely(!thread_is_running(thread)))
192 while (!list_empty(&ofd->ofd_inconsistency_list)) {
193 oii = list_entry(ofd->ofd_inconsistency_list.next,
194 struct ofd_inconsistency_item,
196 list_del_init(&oii->oii_list);
197 spin_unlock(&ofd->ofd_inconsistency_lock);
198 ofd_inconsistency_verify_one(&env, ofd, oii, lrl);
199 spin_lock(&ofd->ofd_inconsistency_lock);
202 spin_unlock(&ofd->ofd_inconsistency_lock);
203 l_wait_event(thread->t_ctl_waitq,
204 !list_empty(&ofd->ofd_inconsistency_list) ||
205 !thread_is_running(thread),
207 spin_lock(&ofd->ofd_inconsistency_lock);
210 while (!list_empty(&ofd->ofd_inconsistency_list)) {
211 struct ofd_object *fo;
213 oii = list_entry(ofd->ofd_inconsistency_list.next,
214 struct ofd_inconsistency_item,
216 list_del_init(&oii->oii_list);
218 spin_unlock(&ofd->ofd_inconsistency_lock);
220 ofd_write_lock(&env, fo);
221 fo->ofo_pfid_checking = 0;
222 ofd_write_unlock(&env, fo);
224 ofd_object_put(&env, fo);
226 spin_lock(&ofd->ofd_inconsistency_lock);
234 spin_lock(&ofd->ofd_inconsistency_lock);
236 thread_set_flags(thread, SVC_STOPPED);
237 wake_up_all(&thread->t_ctl_waitq);
238 spin_unlock(&ofd->ofd_inconsistency_lock);
245 * Start parent FID verification thread.
247 * See ofd_inconsistency_verification_main().
249 * \param[in] ofd OFD device
251 * \retval 0 on successful start of thread
252 * \retval negative value on error
254 int ofd_start_inconsistency_verification_thread(struct ofd_device *ofd)
256 struct ptlrpc_thread *thread = &ofd->ofd_inconsistency_thread;
257 struct l_wait_info lwi = { 0 };
258 struct task_struct *task;
261 spin_lock(&ofd->ofd_inconsistency_lock);
262 if (unlikely(thread_is_running(thread))) {
263 spin_unlock(&ofd->ofd_inconsistency_lock);
268 thread_set_flags(thread, 0);
269 spin_unlock(&ofd->ofd_inconsistency_lock);
270 task = kthread_run(ofd_inconsistency_verification_main, ofd,
271 "inconsistency_verification");
274 CERROR("%s: cannot start self_repair thread: rc = %d\n",
278 l_wait_event(thread->t_ctl_waitq,
279 thread_is_running(thread) ||
280 thread_is_stopped(thread),
288 * Stop parent FID verification thread.
290 * \param[in] ofd OFD device
292 * \retval 0 on successful start of thread
293 * \retval -EALREADY if thread is already stopped
295 int ofd_stop_inconsistency_verification_thread(struct ofd_device *ofd)
297 struct ptlrpc_thread *thread = &ofd->ofd_inconsistency_thread;
298 struct l_wait_info lwi = { 0 };
300 spin_lock(&ofd->ofd_inconsistency_lock);
301 if (thread_is_init(thread) || thread_is_stopped(thread)) {
302 spin_unlock(&ofd->ofd_inconsistency_lock);
307 thread_set_flags(thread, SVC_STOPPING);
308 spin_unlock(&ofd->ofd_inconsistency_lock);
309 wake_up_all(&thread->t_ctl_waitq);
310 l_wait_event(thread->t_ctl_waitq,
311 thread_is_stopped(thread),
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 spin_unlock(&ofd->ofd_inconsistency_lock);
362 wake_up_all(&ofd->ofd_inconsistency_thread.t_ctl_waitq);
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 * Prepare buffers for read request processing.
487 * This function converts remote buffers from client to local buffers
488 * and prepares the latter.
490 * \param[in] env execution environment
491 * \param[in] exp OBD export of client
492 * \param[in] ofd OFD device
493 * \param[in] fid FID of object
494 * \param[in] la object attributes
495 * \param[in] oa OBDO structure from client
496 * \param[in] niocount number of remote buffers
497 * \param[in] rnb remote buffers
498 * \param[in] nr_local number of local buffers
499 * \param[in] lnb local buffers
500 * \param[in] jobid job ID name
502 * \retval 0 on successful prepare
503 * \retval negative value on error
505 static int ofd_preprw_read(const struct lu_env *env, struct obd_export *exp,
506 struct ofd_device *ofd, const struct lu_fid *fid,
507 struct lu_attr *la, struct obdo *oa, int niocount,
508 struct niobuf_remote *rnb, int *nr_local,
509 struct niobuf_local *lnb, char *jobid)
511 struct ofd_object *fo;
512 int i, j, rc, tot_bytes = 0;
513 enum dt_bufs_type dbt = DT_BUFS_TYPE_READ;
516 LASSERT(env != NULL);
518 fo = ofd_object_find(env, ofd, fid);
523 ofd_read_lock(env, fo);
524 if (!ofd_object_exists(fo))
525 GOTO(unlock, rc = -ENOENT);
527 if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
528 rc = ofd_verify_ff(env, fo, oa);
533 if (ptlrpc_connection_is_local(exp->exp_connection))
534 dbt |= DT_BUFS_TYPE_LOCAL;
536 for (*nr_local = 0, i = 0, j = 0; i < niocount; i++) {
537 rc = dt_bufs_get(env, ofd_object_child(fo), rnb + i,
539 if (unlikely(rc < 0))
541 LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
542 /* correct index for local buffers to continue with */
545 LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
546 tot_bytes += rnb[i].rnb_len;
549 LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
550 rc = dt_attr_get(env, ofd_object_child(fo), la);
554 rc = dt_read_prep(env, ofd_object_child(fo), lnb, *nr_local);
558 ofd_counter_incr(exp, LPROC_OFD_STATS_READ, jobid, tot_bytes);
562 dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
564 ofd_read_unlock(env, fo);
565 ofd_object_put(env, fo);
570 * Prepare buffers for write request processing.
572 * This function converts remote buffers from client to local buffers
573 * and prepares the latter. If there is recovery in progress and required
574 * object is missing then it can be re-created before write.
576 * \param[in] env execution environment
577 * \param[in] exp OBD export of client
578 * \param[in] ofd OFD device
579 * \param[in] fid FID of object
580 * \param[in] la object attributes
581 * \param[in] oa OBDO structure from client
582 * \param[in] objcount always 1
583 * \param[in] obj object data
584 * \param[in] rnb remote buffers
585 * \param[in] nr_local number of local buffers
586 * \param[in] lnb local buffers
587 * \param[in] jobid job ID name
589 * \retval 0 on successful prepare
590 * \retval negative value on error
592 static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
593 struct ofd_device *ofd, const struct lu_fid *fid,
594 struct lu_attr *la, struct obdo *oa,
595 int objcount, struct obd_ioobj *obj,
596 struct niobuf_remote *rnb, int *nr_local,
597 struct niobuf_local *lnb, char *jobid)
599 struct ofd_object *fo;
600 int i, j, k, rc = 0, tot_bytes = 0;
601 enum dt_bufs_type dbt = DT_BUFS_TYPE_WRITE;
604 LASSERT(env != NULL);
605 LASSERT(objcount == 1);
607 if (unlikely(exp->exp_obd->obd_recovering)) {
608 u64 seq = fid_seq(fid);
609 u64 oid = fid_oid(fid);
610 struct ofd_seq *oseq;
612 oseq = ofd_seq_load(env, ofd, seq);
614 CERROR("%s: Can't find FID Sequence %#llx: rc = %d\n",
615 ofd_name(ofd), seq, (int)PTR_ERR(oseq));
616 GOTO(out, rc = -EINVAL);
619 if (oid > ofd_seq_last_oid(oseq)) {
623 mutex_lock(&oseq->os_create_lock);
624 diff = oid - ofd_seq_last_oid(oseq);
626 /* Do sync create if the seq is about to used up */
627 if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
628 if (unlikely(oid >= IDIF_MAX_OID - 1))
630 } else if (fid_seq_is_norm(seq)) {
632 LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
635 CERROR("%s : invalid o_seq "DOSTID"\n",
636 ofd_name(ofd), POSTID(&oa->o_oi));
637 mutex_unlock(&oseq->os_create_lock);
638 ofd_seq_put(env, oseq);
639 GOTO(out, rc = -EINVAL);
643 u64 next_id = ofd_seq_last_oid(oseq) + 1;
644 int count = ofd_precreate_batch(ofd, diff);
646 rc = ofd_precreate_objects(env, ofd, next_id,
649 mutex_unlock(&oseq->os_create_lock);
650 ofd_seq_put(env, oseq);
657 mutex_unlock(&oseq->os_create_lock);
660 ofd_seq_put(env, oseq);
663 /* Process incoming grant info, set OBD_BRW_GRANTED flag and grant some
664 * space back if possible, we have to do this outside of the lock as
665 * grant preparation may need to sync whole fs thus wait for all the
666 * transactions to complete. */
667 tgt_grant_prepare_write(env, exp, oa, rnb, obj->ioo_bufcnt);
669 fo = ofd_object_find(env, ofd, fid);
671 GOTO(out, rc = PTR_ERR(fo));
674 ofd_read_lock(env, fo);
675 if (!ofd_object_exists(fo)) {
676 CERROR("%s: BRW to missing obj "DOSTID"\n",
677 exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
678 ofd_read_unlock(env, fo);
679 ofd_object_put(env, fo);
680 GOTO(out, rc = -ENOENT);
683 if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
684 rc = ofd_verify_ff(env, fo, oa);
686 ofd_read_unlock(env, fo);
687 ofd_object_put(env, fo);
692 /* need to verify layout version */
693 if (oa->o_valid & OBD_MD_LAYOUT_VERSION) {
694 rc = ofd_verify_layout_version(env, fo, oa);
696 ofd_read_unlock(env, fo);
697 ofd_object_put(env, fo);
701 oa->o_valid &= ~OBD_MD_LAYOUT_VERSION;
704 if (ptlrpc_connection_is_local(exp->exp_connection))
705 dbt |= DT_BUFS_TYPE_LOCAL;
707 /* parse remote buffers to local buffers and prepare the latter */
708 for (*nr_local = 0, i = 0, j = 0; i < obj->ioo_bufcnt; i++) {
709 rc = dt_bufs_get(env, ofd_object_child(fo),
710 rnb + i, lnb + j, dbt);
711 if (unlikely(rc < 0))
713 LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
714 /* correct index for local buffers to continue with */
715 for (k = 0; k < rc; k++) {
716 lnb[j+k].lnb_flags = rnb[i].rnb_flags;
717 lnb[j+k].lnb_flags &= ~OBD_BRW_LOCALS;
718 if (!(rnb[i].rnb_flags & OBD_BRW_GRANTED))
719 lnb[j+k].lnb_rc = -ENOSPC;
723 LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
724 tot_bytes += rnb[i].rnb_len;
726 LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
728 rc = dt_write_prep(env, ofd_object_child(fo), lnb, *nr_local);
729 if (unlikely(rc != 0))
732 ofd_read_unlock(env, fo);
733 ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE, jobid, tot_bytes);
736 dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
737 ofd_read_unlock(env, fo);
738 ofd_object_put(env, fo);
739 /* tgt_grant_prepare_write() was called, so we must commit */
740 tgt_grant_commit(exp, oa->o_grant_used, rc);
742 /* let's still process incoming grant information packed in the oa,
743 * but without enforcing grant since we won't proceed with the write.
744 * Just like a read request actually. */
745 tgt_grant_prepare_read(env, exp, oa);
750 * Prepare bulk IO requests for processing.
752 * This function does initial checks of IO and calls corresponding
753 * functions for read/write processing.
755 * \param[in] env execution environment
756 * \param[in] cmd IO type (read/write)
757 * \param[in] exp OBD export of client
758 * \param[in] oa OBDO structure from request
759 * \param[in] objcount always 1
760 * \param[in] obj object data
761 * \param[in] rnb remote buffers
762 * \param[in] nr_local number of local buffers
763 * \param[in] lnb local buffers
765 * \retval 0 on successful prepare
766 * \retval negative value on error
768 int ofd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
769 struct obdo *oa, int objcount, struct obd_ioobj *obj,
770 struct niobuf_remote *rnb, int *nr_local,
771 struct niobuf_local *lnb)
773 struct tgt_session_info *tsi = tgt_ses_info(env);
774 struct ofd_device *ofd = ofd_exp(exp);
775 struct ofd_thread_info *info;
777 const struct lu_fid *fid = &oa->o_oi.oi_fid;
780 if (*nr_local > PTLRPC_MAX_BRW_PAGES) {
781 CERROR("%s: bulk has too many pages %d, which exceeds the"
782 "maximum pages per RPC of %d\n",
783 exp->exp_obd->obd_name, *nr_local, PTLRPC_MAX_BRW_PAGES);
787 if (tgt_ses_req(tsi) == NULL) { /* echo client case */
788 info = ofd_info_init(env, exp);
791 info = tsi2ofd_info(tsi);
792 jobid = tsi->tsi_jobid;
797 if (OBD_FAIL_CHECK(OBD_FAIL_SRV_ENOENT)) {
798 struct ofd_seq *oseq;
800 oseq = ofd_seq_load(env, ofd, ostid_seq(&oa->o_oi));
802 CERROR("%s: Can not find seq for "DOSTID
803 ": rc = %ld\n", ofd_name(ofd), POSTID(&oa->o_oi),
808 if (oseq->os_destroys_in_progress == 0) {
809 /* don't fail lookups for orphan recovery, it causes
810 * later LBUGs when objects still exist during
812 ofd_seq_put(env, oseq);
815 ofd_seq_put(env, oseq);
818 LASSERT(objcount == 1);
819 LASSERT(obj->ioo_bufcnt > 0);
821 if (cmd == OBD_BRW_WRITE) {
822 la_from_obdo(&info->fti_attr, oa, OBD_MD_FLGETATTR);
823 rc = ofd_preprw_write(env, exp, ofd, fid, &info->fti_attr, oa,
824 objcount, obj, rnb, nr_local, lnb, jobid);
825 } else if (cmd == OBD_BRW_READ) {
826 tgt_grant_prepare_read(env, exp, oa);
827 rc = ofd_preprw_read(env, exp, ofd, fid, &info->fti_attr, oa,
828 obj->ioo_bufcnt, rnb, nr_local, lnb,
830 obdo_from_la(oa, &info->fti_attr, LA_ATIME);
832 CERROR("%s: wrong cmd %d received!\n",
833 exp->exp_obd->obd_name, cmd);
840 * Drop reference on local buffers for read bulk IO.
842 * This will free all local buffers use by this read request.
844 * \param[in] env execution environment
845 * \param[in] ofd OFD device
846 * \param[in] fid object FID
847 * \param[in] objcount always 1
848 * \param[in] niocount number of local buffers
849 * \param[in] lnb local buffers
851 * \retval 0 on successful execution
852 * \retval negative value on error
855 ofd_commitrw_read(const struct lu_env *env, struct ofd_device *ofd,
856 const struct lu_fid *fid, int objcount, int niocount,
857 struct niobuf_local *lnb)
859 struct ofd_object *fo;
863 LASSERT(niocount > 0);
865 fo = ofd_object_find(env, ofd, fid);
869 LASSERT(ofd_object_exists(fo));
870 dt_bufs_put(env, ofd_object_child(fo), lnb, niocount);
872 ofd_read_unlock(env, fo);
873 ofd_object_put(env, fo);
874 /* second put is pair to object_get in ofd_preprw_read */
875 ofd_object_put(env, fo);
881 * Set attributes of object during write bulk IO processing.
883 * Change object attributes and write parent FID into extended
884 * attributes when needed.
886 * \param[in] env execution environment
887 * \param[in] ofd OFD device
888 * \param[in] ofd_obj OFD object
889 * \param[in] la object attributes
892 * \retval 0 on successful attributes update
893 * \retval negative value on error
896 ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
897 struct ofd_object *ofd_obj, struct lu_attr *la,
900 struct ofd_thread_info *info = ofd_info(env);
901 struct filter_fid *ff = &info->fti_mds_fid;
902 __u64 valid = la->la_valid;
904 struct dt_object *dt_obj;
912 dt_obj = ofd_object_child(ofd_obj);
913 LASSERT(dt_obj != NULL);
915 la->la_valid &= LA_UID | LA_GID | LA_PROJID;
917 rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
921 if (!la->la_valid && !(oa->o_valid &
922 (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
923 /* no attributes to set */
926 th = ofd_trans_create(env, ofd);
928 GOTO(out, rc = PTR_ERR(th));
931 rc = dt_declare_attr_set(env, dt_obj, la, th);
936 rc = dt_declare_xattr_set(env, dt_obj, &info->fti_buf,
937 XATTR_NAME_FID, 0, th);
941 /* We don't need a transno for this operation which will be re-executed
942 * anyway when the OST_WRITE (with a transno assigned) is replayed */
943 rc = dt_trans_start_local(env, ofd->ofd_osd , th);
947 ofd_read_lock(env, ofd_obj);
949 /* set uid/gid/projid */
951 rc = dt_attr_set(env, dt_obj, la, th);
953 GOTO(out_unlock, rc);
956 fl = ofd_object_ff_update(env, ofd_obj, oa, ff);
958 GOTO(out_unlock, rc = fl);
960 /* set filter fid EA.
961 * FIXME: it holds read lock of ofd object to modify the XATTR_NAME_FID
962 * while the write lock should be held. However, it should work because
963 * write RPCs only modify ff_{parent,layout} and those information will
964 * be the same from all the write RPCs. The reason that fl is not used
965 * in dt_xattr_set() is to allow this race. */
966 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NOPFID))
967 GOTO(out_unlock, rc);
968 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR1))
969 ff->ff_parent.f_oid = cpu_to_le32(1UL << 31);
970 else if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR2))
971 le32_add_cpu(&ff->ff_parent.f_oid, -1);
973 info->fti_buf.lb_buf = ff;
974 info->fti_buf.lb_len = sizeof(*ff);
975 rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID, 0, th);
977 filter_fid_le_to_cpu(&ofd_obj->ofo_ff, ff, sizeof(*ff));
979 GOTO(out_unlock, rc);
982 ofd_read_unlock(env, ofd_obj);
984 dt_trans_stop(env, ofd->ofd_osd, th);
986 la->la_valid = valid;
990 struct ofd_soft_sync_callback {
991 struct dt_txn_commit_cb ossc_cb;
992 struct obd_export *ossc_exp;
996 * Callback function for "soft sync" update.
998 * Reset fed_soft_sync_count upon committing the "soft_sync" update.
999 * See ofd_soft_sync_cb_add() below for more details on soft sync.
1001 * \param[in] env execution environment
1002 * \param[in] th transaction handle
1003 * \param[in] cb callback data
1004 * \param[in] err error code
1006 static void ofd_cb_soft_sync(struct lu_env *env, struct thandle *th,
1007 struct dt_txn_commit_cb *cb, int err)
1009 struct ofd_soft_sync_callback *ossc;
1011 ossc = container_of(cb, struct ofd_soft_sync_callback, ossc_cb);
1013 CDEBUG(D_INODE, "export %p soft sync count is reset\n", ossc->ossc_exp);
1014 atomic_set(&ossc->ossc_exp->exp_filter_data.fed_soft_sync_count, 0);
1016 class_export_cb_put(ossc->ossc_exp);
1021 * Add callback for "soft sync" processing.
1023 * The "soft sync" mechanism does asynchronous commit when OBD_BRW_SOFT_SYNC
1024 * flag is set in client buffers. The intention is for this operation to
1025 * commit pages belonging to a client which has "too many" outstanding
1026 * unstable pages in its cache. See LU-2139 for details.
1028 * This function adds callback to be called when commit is done.
1030 * \param[in] th transaction handle
1031 * \param[in] exp OBD export of client
1033 * \retval 0 on successful callback adding
1034 * \retval negative value on error
1036 static int ofd_soft_sync_cb_add(struct thandle *th, struct obd_export *exp)
1038 struct ofd_soft_sync_callback *ossc;
1039 struct dt_txn_commit_cb *dcb;
1042 OBD_ALLOC_PTR(ossc);
1046 ossc->ossc_exp = class_export_cb_get(exp);
1048 dcb = &ossc->ossc_cb;
1049 dcb->dcb_func = ofd_cb_soft_sync;
1050 INIT_LIST_HEAD(&dcb->dcb_linkage);
1051 strlcpy(dcb->dcb_name, "ofd_cb_soft_sync", sizeof(dcb->dcb_name));
1053 rc = dt_trans_cb_add(th, dcb);
1055 class_export_cb_put(exp);
1063 * Commit bulk IO buffers to the storage.
1065 * This function finalizes write IO processing by writing data to the disk.
1066 * That write can be synchronous or asynchronous depending on buffers flags.
1068 * \param[in] env execution environment
1069 * \param[in] exp OBD export of client
1070 * \param[in] ofd OFD device
1071 * \param[in] fid FID of object
1072 * \param[in] la object attributes
1073 * \param[in] ff parent FID of object
1074 * \param[in] objcount always 1
1075 * \param[in] niocount number of local buffers
1076 * \param[in] lnb local buffers
1077 * \param[in] granted grant space consumed for the bulk I/O
1078 * \param[in] old_rc result of processing at this point
1080 * \retval 0 on successful commit
1081 * \retval negative value on error
1084 ofd_commitrw_write(const struct lu_env *env, struct obd_export *exp,
1085 struct ofd_device *ofd, const struct lu_fid *fid,
1086 struct lu_attr *la, struct obdo *oa, int objcount,
1087 int niocount, struct niobuf_local *lnb,
1088 unsigned long granted, int old_rc)
1090 struct filter_export_data *fed = &exp->exp_filter_data;
1091 struct ofd_object *fo;
1092 struct dt_object *o;
1098 bool soft_sync = false;
1099 bool cb_registered = false;
1100 bool fake_write = false;
1104 LASSERT(objcount == 1);
1106 fo = ofd_object_find(env, ofd, fid);
1107 LASSERT(fo != NULL);
1109 o = ofd_object_child(fo);
1113 GOTO(out, rc = old_rc);
1114 if (!ofd_object_exists(fo))
1115 GOTO(out, rc = -ENOENT);
1118 * The first write to each object must set some attributes. It is
1119 * important to set the uid/gid before calling
1120 * dt_declare_write_commit() since quota enforcement is now handled in
1123 rc = ofd_write_attr_set(env, ofd, fo, la, oa);
1127 la->la_valid &= LA_ATIME | LA_MTIME | LA_CTIME;
1129 /* do fake write, to simulate the write case for performance testing */
1130 if (OBD_FAIL_CHECK(OBD_FAIL_OST_FAKE_RW)) {
1131 struct niobuf_local *last = &lnb[niocount - 1];
1132 __u64 file_size = last->lnb_file_offset + last->lnb_len;
1133 __u64 valid = la->la_valid;
1135 la->la_valid = LA_SIZE;
1137 rc = dt_attr_get(env, o, la);
1138 if (rc < 0 && rc != -ENOENT)
1141 if (file_size < la->la_size)
1142 file_size = la->la_size;
1144 /* dirty inode by setting file size */
1145 la->la_valid = valid | LA_SIZE;
1146 la->la_size = file_size;
1152 th = ofd_trans_create(env, ofd);
1154 GOTO(out, rc = PTR_ERR(th));
1156 th->th_sync |= ofd->ofd_sync_journal;
1157 if (th->th_sync == 0) {
1158 for (i = 0; i < niocount; i++) {
1159 if (!(lnb[i].lnb_flags & OBD_BRW_ASYNC)) {
1163 if (lnb[i].lnb_flags & OBD_BRW_SOFT_SYNC)
1168 if (OBD_FAIL_CHECK(OBD_FAIL_OST_DQACQ_NET))
1169 GOTO(out_stop, rc = -EINPROGRESS);
1171 if (likely(!fake_write)) {
1172 rc = dt_declare_write_commit(env, o, lnb, niocount, th);
1178 /* update [mac]time if needed */
1179 rc = dt_declare_attr_set(env, o, la, th);
1184 rc = ofd_trans_start(env, ofd, fo, th);
1188 ofd_read_lock(env, fo);
1189 if (!ofd_object_exists(fo))
1190 GOTO(out_unlock, rc = -ENOENT);
1192 if (likely(!fake_write)) {
1193 rc = dt_write_commit(env, o, lnb, niocount, th);
1195 GOTO(out_unlock, rc);
1199 rc = dt_attr_set(env, o, la, th);
1201 GOTO(out_unlock, rc);
1204 /* get attr to return */
1205 rc = dt_attr_get(env, o, la);
1208 ofd_read_unlock(env, fo);
1210 /* Force commit to make the just-deleted blocks
1211 * reusable. LU-456 */
1215 /* do this before trans stop in case commit has finished */
1216 if (!th->th_sync && soft_sync && !cb_registered) {
1217 ofd_soft_sync_cb_add(th, exp);
1218 cb_registered = true;
1221 if (rc == 0 && granted > 0) {
1222 if (tgt_grant_commit_cb_add(th, exp, granted) == 0)
1226 rc2 = ofd_trans_stop(env, ofd, th, rc);
1229 if (rc == -ENOSPC && retries++ < 3) {
1230 CDEBUG(D_INODE, "retry after force commit, retries:%d\n",
1236 /* reset fed_soft_sync_count upon non-SOFT_SYNC RPC */
1237 atomic_set(&fed->fed_soft_sync_count, 0);
1238 else if (atomic_inc_return(&fed->fed_soft_sync_count) ==
1239 ofd->ofd_soft_sync_limit)
1240 dt_commit_async(env, ofd->ofd_osd);
1243 dt_bufs_put(env, o, lnb, niocount);
1244 ofd_object_put(env, fo);
1245 /* second put is pair to object_get in ofd_preprw_write */
1246 ofd_object_put(env, fo);
1248 tgt_grant_commit(exp, granted, old_rc);
1253 * Commit bulk IO to the storage.
1255 * This is companion function to the ofd_preprw(). It finishes bulk IO
1256 * request processing by committing buffers to the storage (WRITE) and/or
1257 * freeing those buffers (read/write). See ofd_commitrw_read() and
1258 * ofd_commitrw_write() for details about each type of IO.
1260 * \param[in] env execution environment
1261 * \param[in] cmd IO type (READ/WRITE)
1262 * \param[in] exp OBD export of client
1263 * \param[in] oa OBDO structure from client
1264 * \param[in] objcount always 1
1265 * \param[in] obj object data
1266 * \param[in] rnb remote buffers
1267 * \param[in] npages number of local buffers
1268 * \param[in] lnb local buffers
1269 * \param[in] old_rc result of processing at this point
1271 * \retval 0 on successful commit
1272 * \retval negative value on error
1274 int ofd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1275 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1276 struct niobuf_remote *rnb, int npages,
1277 struct niobuf_local *lnb, int old_rc)
1279 struct ofd_thread_info *info = ofd_info(env);
1280 struct ofd_device *ofd = ofd_exp(exp);
1281 const struct lu_fid *fid = &oa->o_oi.oi_fid;
1285 LASSERT(npages > 0);
1287 if (cmd == OBD_BRW_WRITE) {
1288 struct lu_nodemap *nodemap;
1290 /* Don't update timestamps if this write is older than a
1291 * setattr which modifies the timestamps. b=10150 */
1292 valid = OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLPROJID;
1293 if (tgt_fmd_check(exp, fid, info->fti_xid))
1294 valid |= OBD_MD_FLATIME | OBD_MD_FLMTIME |
1297 la_from_obdo(&info->fti_attr, oa, valid);
1299 rc = ofd_commitrw_write(env, exp, ofd, fid, &info->fti_attr,
1300 oa, objcount, npages, lnb,
1301 oa->o_grant_used, old_rc);
1303 obdo_from_la(oa, &info->fti_attr,
1304 OFD_VALID_FLAGS | LA_GID | LA_UID |
1307 obdo_from_la(oa, &info->fti_attr, LA_GID | LA_UID |
1310 /* don't report overquota flag if we failed before reaching
1312 if (old_rc == 0 && (rc == 0 || rc == -EDQUOT)) {
1313 /* return the overquota flags to client */
1314 if (lnb[0].lnb_flags & OBD_BRW_OVER_USRQUOTA) {
1315 if (oa->o_valid & OBD_MD_FLFLAGS)
1316 oa->o_flags |= OBD_FL_NO_USRQUOTA;
1318 oa->o_flags = OBD_FL_NO_USRQUOTA;
1321 if (lnb[0].lnb_flags & OBD_BRW_OVER_GRPQUOTA) {
1322 if (oa->o_valid & OBD_MD_FLFLAGS)
1323 oa->o_flags |= OBD_FL_NO_GRPQUOTA;
1325 oa->o_flags = OBD_FL_NO_GRPQUOTA;
1327 if (lnb[0].lnb_flags & OBD_BRW_OVER_PRJQUOTA) {
1328 if (oa->o_valid & OBD_MD_FLFLAGS)
1329 oa->o_flags |= OBD_FL_NO_PRJQUOTA;
1331 oa->o_flags = OBD_FL_NO_PRJQUOTA;
1334 oa->o_valid |= OBD_MD_FLFLAGS;
1335 oa->o_valid |= OBD_MD_FLALLQUOTA;
1338 /* Convert back to client IDs. LU-9671.
1339 * nodemap_get_from_exp() may fail due to nodemap deactivated,
1340 * server ID will be returned back to client in that case. */
1341 nodemap = nodemap_get_from_exp(exp);
1342 if (nodemap != NULL && !IS_ERR(nodemap)) {
1343 oa->o_uid = nodemap_map_id(nodemap, NODEMAP_UID,
1344 NODEMAP_FS_TO_CLIENT,
1346 oa->o_gid = nodemap_map_id(nodemap, NODEMAP_GID,
1347 NODEMAP_FS_TO_CLIENT,
1349 nodemap_putref(nodemap);
1351 } else if (cmd == OBD_BRW_READ) {
1352 struct ldlm_namespace *ns = ofd->ofd_namespace;
1354 /* If oa != NULL then ofd_preprw_read updated the inode
1355 * atime and we should update the lvb so that other glimpses
1356 * will also get the updated value. bug 5972 */
1357 if (oa && ns && ns->ns_lvbo && ns->ns_lvbo->lvbo_update) {
1358 struct ldlm_resource *rs = NULL;
1360 ost_fid_build_resid(fid, &info->fti_resid);
1361 rs = ldlm_resource_get(ns, NULL, &info->fti_resid,
1364 ldlm_res_lvbo_update(rs, NULL, 1);
1365 ldlm_resource_putref(rs);
1368 rc = ofd_commitrw_read(env, ofd, fid, objcount,