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, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 021110-1307, USA
24 * Copyright (c) 2013, 2017, Intel Corporation.
27 * lustre/target/tgt_handler.c
29 * Lustre Unified Target request handler code
31 * Author: Brian Behlendorf <behlendorf1@llnl.gov>
32 * Author: Mikhail Pershin <mike.pershin@intel.com>
35 #define DEBUG_SUBSYSTEM S_CLASS
37 #include <linux/user_namespace.h>
38 #include <linux/delay.h>
39 #include <linux/uidgid.h>
41 #include <libcfs/linux/linux-mem.h>
43 #include <obd_class.h>
44 #include <obd_cksum.h>
45 #include <lustre_lfsck.h>
46 #include <lustre_nodemap.h>
47 #include <lustre_acl.h>
49 #include "tgt_internal.h"
51 char *tgt_name(struct lu_target *tgt)
53 LASSERT(tgt->lut_obd != NULL);
54 return tgt->lut_obd->obd_name;
56 EXPORT_SYMBOL(tgt_name);
59 * Generic code handling requests that have struct mdt_body passed in:
61 * - extract mdt_body from request and save it in @tsi, if present;
63 * - create lu_object, corresponding to the fid in mdt_body, and save it in
66 * - if HAS_BODY flag is set for this request type check whether object
67 * actually exists on storage (lu_object_exists()).
70 static int tgt_mdt_body_unpack(struct tgt_session_info *tsi, __u32 flags)
72 const struct mdt_body *body;
73 struct lu_object *obj;
74 struct req_capsule *pill = tsi->tsi_pill;
79 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
83 tsi->tsi_mdt_body = body;
85 if (!(body->mbo_valid & OBD_MD_FLID))
88 /* mdc_pack_body() doesn't check if fid is zero and set OBD_ML_FID
89 * in any case in pre-2.5 clients. Fix that here if needed */
90 if (unlikely(fid_is_zero(&body->mbo_fid1)))
93 if (!fid_is_sane(&body->mbo_fid1)) {
94 CERROR("%s: invalid FID: "DFID"\n", tgt_name(tsi->tsi_tgt),
95 PFID(&body->mbo_fid1));
99 obj = lu_object_find(tsi->tsi_env,
100 &tsi->tsi_tgt->lut_bottom->dd_lu_dev,
101 &body->mbo_fid1, NULL);
103 if ((flags & HAS_BODY) && !lu_object_exists(obj)) {
104 lu_object_put(tsi->tsi_env, obj);
107 tsi->tsi_corpus = obj;
114 tsi->tsi_fid = body->mbo_fid1;
120 * Validate oa from client.
121 * If the request comes from 2.0 clients, currently only RSVD seq and IDIF
123 * a. objects in Single MDT FS seq = FID_SEQ_OST_MDT0, oi_id != 0
124 * b. Echo objects(seq = 2), old echo client still use oi_id/oi_seq to
125 * pack ost_id. Because non-zero oi_seq will make it diffcult to tell
126 * whether this is oi_fid or real ostid. So it will check
127 * OBD_CONNECT_FID, then convert the ostid to FID for old client.
128 * c. Old FID-disable osc will send IDIF.
129 * d. new FID-enable osc/osp will send normal FID.
131 * And also oi_id/f_oid should always start from 1. oi_id/f_oid = 0 will
132 * be used for LAST_ID file, and only being accessed inside OST now.
134 int tgt_validate_obdo(struct tgt_session_info *tsi, struct obdo *oa)
136 struct ost_id *oi = &oa->o_oi;
137 u64 seq = ostid_seq(oi);
138 u64 id = ostid_id(oi);
142 if (unlikely(!(exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_FID) &&
143 fid_seq_is_echo(seq))) {
144 /* Sigh 2.[123] client still sends echo req with oi_id = 0
145 * during create, and we will reset this to 1, since this
146 * oi_id is basically useless in the following create process,
147 * but oi_id == 0 will make it difficult to tell whether it is
148 * real FID or ost_id. */
149 oi->oi_fid.f_seq = FID_SEQ_ECHO;
150 oi->oi_fid.f_oid = id ?: 1;
151 oi->oi_fid.f_ver = 0;
153 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
155 if (unlikely((oa->o_valid & OBD_MD_FLID) && id == 0))
156 GOTO(out, rc = -EPROTO);
158 /* Note: this check might be forced in 2.5 or 2.6, i.e.
159 * all of the requests are required to setup FLGROUP */
160 if (unlikely(!(oa->o_valid & OBD_MD_FLGROUP))) {
161 ostid_set_seq_mdt0(oi);
162 oa->o_valid |= OBD_MD_FLGROUP;
166 if (unlikely(!(fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq) ||
167 fid_seq_is_norm(seq) || fid_seq_is_echo(seq))))
168 GOTO(out, rc = -EPROTO);
170 rc = ostid_to_fid(&tti->tti_fid1, oi,
171 tsi->tsi_tgt->lut_lsd.lsd_osd_index);
172 if (unlikely(rc != 0))
175 oi->oi_fid = tti->tti_fid1;
181 CERROR("%s: client %s sent bad object "DOSTID": rc = %d\n",
182 tgt_name(tsi->tsi_tgt), obd_export_nid2str(tsi->tsi_exp),
186 EXPORT_SYMBOL(tgt_validate_obdo);
188 static int tgt_io_data_unpack(struct tgt_session_info *tsi, struct ost_id *oi)
191 struct niobuf_remote *rnb;
192 struct obd_ioobj *ioo;
197 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
201 rnb = req_capsule_client_get(tsi->tsi_pill, &RMF_NIOBUF_REMOTE);
205 max_brw = ioobj_max_brw_get(ioo);
206 if (unlikely((max_brw & (max_brw - 1)) != 0)) {
207 CERROR("%s: client %s sent bad ioobj max %u for "DOSTID
208 ": rc = %d\n", tgt_name(tsi->tsi_tgt),
209 obd_export_nid2str(tsi->tsi_exp), max_brw,
210 POSTID(oi), -EPROTO);
215 obj_count = req_capsule_get_size(tsi->tsi_pill, &RMF_OBD_IOOBJ,
216 RCL_CLIENT) / sizeof(*ioo);
217 if (obj_count == 0) {
218 CERROR("%s: short ioobj\n", tgt_name(tsi->tsi_tgt));
220 } else if (obj_count > 1) {
221 CERROR("%s: too many ioobjs (%d)\n", tgt_name(tsi->tsi_tgt),
226 if (ioo->ioo_bufcnt == 0) {
227 CERROR("%s: ioo has zero bufcnt\n", tgt_name(tsi->tsi_tgt));
231 if (ioo->ioo_bufcnt > PTLRPC_MAX_BRW_PAGES) {
232 DEBUG_REQ(D_RPCTRACE, tgt_ses_req(tsi),
233 "bulk has too many pages (%d)",
241 static int tgt_ost_body_unpack(struct tgt_session_info *tsi, __u32 flags)
243 struct ost_body *body;
244 struct req_capsule *pill = tsi->tsi_pill;
245 struct lu_nodemap *nodemap;
250 body = req_capsule_client_get(pill, &RMF_OST_BODY);
254 rc = tgt_validate_obdo(tsi, &body->oa);
258 nodemap = nodemap_get_from_exp(tsi->tsi_exp);
260 RETURN(PTR_ERR(nodemap));
262 body->oa.o_uid = nodemap_map_id(nodemap, NODEMAP_UID,
263 NODEMAP_CLIENT_TO_FS,
265 body->oa.o_gid = nodemap_map_id(nodemap, NODEMAP_GID,
266 NODEMAP_CLIENT_TO_FS,
268 nodemap_putref(nodemap);
270 tsi->tsi_ost_body = body;
271 tsi->tsi_fid = body->oa.o_oi.oi_fid;
273 if (req_capsule_has_field(pill, &RMF_OBD_IOOBJ, RCL_CLIENT)) {
274 rc = tgt_io_data_unpack(tsi, &body->oa.o_oi);
279 if (!(body->oa.o_valid & OBD_MD_FLID)) {
280 if (flags & HAS_BODY) {
281 CERROR("%s: OBD_MD_FLID flag is not set in ost_body but OID/FID is mandatory with HAS_BODY\n",
282 tgt_name(tsi->tsi_tgt));
289 ost_fid_build_resid(&tsi->tsi_fid, &tsi->tsi_resid);
292 * OST doesn't get object in advance for further use to prevent
293 * situations with nested object_find which is potential deadlock.
295 tsi->tsi_corpus = NULL;
300 * Do necessary preprocessing according to handler ->th_flags.
302 static int tgt_request_preprocess(struct tgt_session_info *tsi,
303 struct tgt_handler *h,
304 struct ptlrpc_request *req)
306 struct req_capsule *pill = tsi->tsi_pill;
307 __u32 flags = h->th_flags;
312 if (tsi->tsi_preprocessed)
315 LASSERT(h->th_act != NULL);
316 LASSERT(h->th_opc == lustre_msg_get_opc(req->rq_reqmsg));
317 LASSERT(current->journal_info == NULL);
319 LASSERT(ergo(flags & (HAS_BODY | HAS_REPLY),
321 if (h->th_fmt != NULL) {
322 req_capsule_set(pill, h->th_fmt);
323 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT) &&
324 req_capsule_field_present(pill, &RMF_MDT_BODY,
326 rc = tgt_mdt_body_unpack(tsi, flags);
329 } else if (req_capsule_has_field(pill, &RMF_OST_BODY,
331 req_capsule_field_present(pill, &RMF_OST_BODY,
333 rc = tgt_ost_body_unpack(tsi, flags);
339 if (flags & IS_MUTABLE && tgt_conn_flags(tsi) & OBD_CONNECT_RDONLY)
342 if (flags & HAS_KEY) {
343 struct ldlm_request *dlm_req;
345 LASSERT(h->th_fmt != NULL);
347 dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
348 if (dlm_req != NULL) {
349 union ldlm_wire_policy_data *policy =
350 &dlm_req->lock_desc.l_policy_data;
352 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
354 (policy->l_inodebits.bits |
355 policy->l_inodebits.try_bits) == 0)) {
357 * Lock without inodebits makes no sense and
358 * will oops later in ldlm. If client miss to
359 * set such bits, do not trigger ASSERTION.
361 * For liblustre flock case, it maybe zero.
365 tsi->tsi_dlm_req = dlm_req;
371 tsi->tsi_preprocessed = 1;
376 * Invoke handler for this request opc. Also do necessary preprocessing
377 * (according to handler ->th_flags), and post-processing (setting of
378 * ->last_{xid,committed}).
380 static int tgt_handle_request0(struct tgt_session_info *tsi,
381 struct tgt_handler *h,
382 struct ptlrpc_request *req)
386 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
391 /* When dealing with sec context requests, no export is associated yet,
392 * because these requests are sent before *_CONNECT requests.
393 * A NULL req->rq_export means the normal *_common_slice handlers will
394 * not be called, because there is no reference to the target.
395 * So deal with them by hand and jump directly to target_send_reply().
399 case SEC_CTX_INIT_CONT:
401 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
406 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
407 * to put same checks into handlers like mdt_close(), mdt_reint(),
408 * etc., without talking to mdt authors first. Checking same thing
409 * there again is useless and returning 0 error without packing reply
410 * is buggy! Handlers either pack reply or return error.
412 * We return 0 here and do not send any reply in order to emulate
413 * network failure. Do not send any reply in case any of NET related
414 * fail_id has occured.
416 if (OBD_FAIL_CHECK_ORSET(h->th_fail_id, OBD_FAIL_ONCE))
418 if (unlikely(lustre_msg_get_opc(req->rq_reqmsg) == MDS_REINT &&
419 OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_MULTI_NET)))
422 /* drop OUT_UPDATE rpc */
423 if (unlikely(lustre_msg_get_opc(req->rq_reqmsg) == OUT_UPDATE &&
424 OBD_FAIL_CHECK(OBD_FAIL_OUT_UPDATE_DROP)))
427 rc = tgt_request_preprocess(tsi, h, req);
428 /* pack reply if reply format is fixed */
429 if (rc == 0 && h->th_flags & HAS_REPLY) {
431 if (req_capsule_has_field(tsi->tsi_pill, &RMF_MDT_MD,
433 req_capsule_set_size(tsi->tsi_pill, &RMF_MDT_MD,
435 tsi->tsi_mdt_body->mbo_eadatasize);
436 if (req_capsule_has_field(tsi->tsi_pill, &RMF_LOGCOOKIES,
438 req_capsule_set_size(tsi->tsi_pill, &RMF_LOGCOOKIES,
440 if (req_capsule_has_field(tsi->tsi_pill, &RMF_ACL, RCL_SERVER))
441 req_capsule_set_size(tsi->tsi_pill,
442 &RMF_ACL, RCL_SERVER,
443 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
445 if (req_capsule_has_field(tsi->tsi_pill, &RMF_SHORT_IO,
447 struct niobuf_remote *remote_nb =
448 req_capsule_client_get(tsi->tsi_pill,
450 struct ost_body *body = tsi->tsi_ost_body;
452 req_capsule_set_size(tsi->tsi_pill, &RMF_SHORT_IO,
454 (body->oa.o_valid & OBD_MD_FLFLAGS &&
455 body->oa.o_flags & OBD_FL_SHORT_IO) ?
456 remote_nb[0].rnb_len : 0);
459 rc = req_capsule_server_pack(tsi->tsi_pill);
462 if (likely(rc == 0)) {
464 * Process request, there can be two types of rc:
465 * 1) errors with msg unpack/pack, other failures outside the
466 * operation itself. This is counted as serious errors;
467 * 2) errors during fs operation, should be placed in rq_status
471 if (!is_serious(rc) &&
472 !req->rq_no_reply && req->rq_reply_state == NULL) {
473 DEBUG_REQ(D_ERROR, req,
474 "%s: %s handler did not pack reply but returned no error",
475 tgt_name(tsi->tsi_tgt), h->th_name);
478 serious = is_serious(rc);
479 rc = clear_serious(rc);
487 * ELDLM_* codes which > 0 should be in rq_status only as well as
488 * all non-serious errors.
490 if (rc > 0 || !serious)
493 LASSERT(current->journal_info == NULL);
495 if (likely(rc == 0 && req->rq_export))
496 target_committed_to_req(req);
499 target_send_reply(req, rc, tsi->tsi_reply_fail_id);
503 static int tgt_filter_recovery_request(struct ptlrpc_request *req,
504 struct obd_device *obd, int *process)
506 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
513 case MDS_SYNC: /* used in unmounting */
527 case MDS_HSM_PROGRESS:
528 case MDS_HSM_STATE_SET:
529 case MDS_HSM_REQUEST:
531 *process = target_queue_recovery_request(req, obd);
535 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
542 * Handle recovery. Return:
543 * +1: continue request processing;
544 * -ve: abort immediately with the given error code;
545 * 0: send reply with error code in req->rq_status;
547 static int tgt_handle_recovery(struct ptlrpc_request *req, int reply_fail_id)
551 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
556 case SEC_CTX_INIT_CONT:
561 if (!req->rq_export->exp_obd->obd_replayable)
564 /* sanity check: if the xid matches, the request must be marked as a
565 * resent or replayed */
566 if (req_can_reconstruct(req, NULL) == 1) {
567 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
568 (MSG_RESENT | MSG_REPLAY))) {
569 DEBUG_REQ(D_WARNING, req,
570 "rq_xid=%llu matches saved XID, expected REPLAY or RESENT flag (%x)",
572 lustre_msg_get_flags(req->rq_reqmsg));
573 req->rq_status = -ENOTCONN;
577 /* else: note the opposite is not always true; a RESENT req after a
578 * failover will usually not match the last_xid, since it was likely
579 * never committed. A REPLAYed request will almost never match the
580 * last xid, however it could for a committed, but still retained,
583 /* Check for aborted recovery... */
584 if (unlikely(req->rq_export->exp_obd->obd_recovering)) {
588 DEBUG_REQ(D_INFO, req, "Got new replay");
589 rc = tgt_filter_recovery_request(req, req->rq_export->exp_obd,
591 if (rc != 0 || !should_process)
593 else if (should_process < 0) {
594 req->rq_status = should_process;
595 rc = ptlrpc_error(req);
602 /* Initial check for request, it is validation mostly */
603 static struct tgt_handler *tgt_handler_find_check(struct ptlrpc_request *req)
605 struct tgt_handler *h;
606 struct tgt_opc_slice *s;
607 struct lu_target *tgt;
608 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
612 tgt = class_exp2tgt(req->rq_export);
613 if (unlikely(tgt == NULL)) {
614 DEBUG_REQ(D_ERROR, req, "%s: no target for connected export",
615 class_exp2obd(req->rq_export)->obd_name);
616 RETURN(ERR_PTR(-EINVAL));
619 for (s = tgt->lut_slice; s->tos_hs != NULL; s++)
620 if (s->tos_opc_start <= opc && opc < s->tos_opc_end)
623 /* opcode was not found in slice */
624 if (unlikely(s->tos_hs == NULL)) {
625 CERROR("%s: no handlers for opcode 0x%x\n", tgt_name(tgt),
627 RETURN(ERR_PTR(-ENOTSUPP));
630 LASSERT(opc >= s->tos_opc_start && opc < s->tos_opc_end);
631 h = s->tos_hs + (opc - s->tos_opc_start);
632 if (unlikely(h->th_opc == 0)) {
633 CERROR("%s: unsupported opcode 0x%x\n", tgt_name(tgt), opc);
634 RETURN(ERR_PTR(-ENOTSUPP));
640 static int process_req_last_xid(struct ptlrpc_request *req)
644 struct obd_export *exp = req->rq_export;
645 struct tg_export_data *ted = &exp->exp_target_data;
646 bool need_lock = tgt_is_multimodrpcs_client(exp);
650 mutex_lock(&ted->ted_lcd_lock);
651 /* check request's xid is consistent with export's last_xid */
652 last_xid = lustre_msg_get_last_xid(req->rq_reqmsg);
653 if (last_xid > exp->exp_last_xid)
654 exp->exp_last_xid = last_xid;
656 if (req->rq_xid == 0 || req->rq_xid <= exp->exp_last_xid) {
657 /* Some request is allowed to be sent during replay,
658 * such as OUT update requests, FLD requests, so it
659 * is possible that replay requests has smaller XID
660 * than the exp_last_xid.
662 * Some non-replay requests may have smaller XID as
665 * - Client send a no_resend RPC, like statfs;
666 * - The RPC timedout (or some other error) on client,
667 * then it's removed from the unreplied list;
668 * - Client send some other request to bump the
669 * exp_last_xid on server;
670 * - The former RPC got chance to be processed;
672 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
675 DEBUG_REQ(D_WARNING, req,
676 "unexpected xid=%llx != exp_last_xid=%llx, rc = %d",
677 req->rq_xid, exp->exp_last_xid, rc);
682 /* The "last_xid" is the minimum xid among unreplied requests,
683 * if the request is from the previous connection, its xid can
684 * still be larger than "exp_last_xid", then the above check of
685 * xid is not enough to determine whether the request is delayed.
687 * For example, if some replay request was delayed and caused
688 * timeout at client and the replay is restarted, the delayed
689 * replay request will have the larger xid than "exp_last_xid"
691 if (req->rq_export->exp_conn_cnt >
692 lustre_msg_get_conn_cnt(req->rq_reqmsg)) {
694 "Dropping request %llu from an old epoch %u/%u\n",
696 lustre_msg_get_conn_cnt(req->rq_reqmsg),
697 req->rq_export->exp_conn_cnt);
698 req->rq_no_reply = 1;
699 GOTO(out, rc = -ESTALE);
702 /* try to release in-memory reply data */
703 if (tgt_is_multimodrpcs_client(exp)) {
704 tgt_handle_received_xid(exp, last_xid);
705 rc = tgt_handle_tag(req);
710 mutex_unlock(&ted->ted_lcd_lock);
715 int tgt_request_handle(struct ptlrpc_request *req)
717 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
719 struct lustre_msg *msg = req->rq_reqmsg;
720 struct tgt_handler *h;
721 struct lu_target *tgt;
722 int request_fail_id = 0;
723 __u32 opc = lustre_msg_get_opc(msg);
724 struct obd_device *obd;
726 bool is_connect = false;
729 if (unlikely(OBD_FAIL_CHECK(OBD_FAIL_TGT_RECOVERY_REQ_RACE))) {
730 if (cfs_fail_val == 0 &&
731 lustre_msg_get_opc(msg) != OBD_PING &&
732 lustre_msg_get_flags(msg) & MSG_REQ_REPLAY_DONE) {
735 wait_event_idle(cfs_race_waitq, (cfs_race_state == 1));
739 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
740 tsi->tsi_pill = &req->rq_pill;
741 tsi->tsi_env = req->rq_svc_thread->t_env;
743 /* if request has export then get handlers slice from corresponding
744 * target, otherwise that should be connect operation */
745 if (opc == MDS_CONNECT || opc == OST_CONNECT ||
746 opc == MGS_CONNECT) {
748 req_capsule_set(&req->rq_pill, &RQF_CONNECT);
749 rc = target_handle_connect(req);
751 rc = ptlrpc_error(req);
754 /* recovery-small test 18c asks to drop connect reply */
755 if (unlikely(opc == OST_CONNECT &&
756 OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET2)))
760 if (unlikely(!class_connected_export(req->rq_export))) {
761 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT ||
762 opc == SEC_CTX_FINI) {
763 /* sec context initialization has to be handled
764 * by hand in tgt_handle_request0() */
765 tsi->tsi_reply_fail_id = OBD_FAIL_SEC_CTX_INIT_NET;
767 GOTO(handle_recov, rc = 0);
769 CDEBUG(D_HA, "operation %d on unconnected OST from %s\n",
770 opc, libcfs_id2str(req->rq_peer));
771 req->rq_status = -ENOTCONN;
772 rc = ptlrpc_error(req);
776 tsi->tsi_tgt = tgt = class_exp2tgt(req->rq_export);
777 tsi->tsi_exp = req->rq_export;
778 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_JOBSTATS)
779 tsi->tsi_jobid = lustre_msg_get_jobid(req->rq_reqmsg);
781 tsi->tsi_jobid = NULL;
784 DEBUG_REQ(D_ERROR, req, "%s: No target for connected export",
785 class_exp2obd(req->rq_export)->obd_name);
786 req->rq_status = -EINVAL;
787 rc = ptlrpc_error(req);
791 /* Skip last_xid processing for the recovery thread, otherwise, the
792 * last_xid on same request could be processed twice: first time when
793 * processing the incoming request, second time when the request is
794 * being processed by recovery thread. */
795 obd = class_exp2obd(req->rq_export);
797 /* reset the exp_last_xid on each connection. */
798 req->rq_export->exp_last_xid = 0;
799 } else if (obd->obd_recovery_data.trd_processing_task !=
801 rc = process_req_last_xid(req);
804 rc = ptlrpc_error(req);
809 request_fail_id = tgt->lut_request_fail_id;
810 tsi->tsi_reply_fail_id = tgt->lut_reply_fail_id;
812 h = tgt_handler_find_check(req);
814 req->rq_status = PTR_ERR(h);
815 rc = ptlrpc_error(req);
819 LASSERTF(h->th_opc == opc, "opcode mismatch %d != %d\n",
822 if ((cfs_fail_val == 0 || cfs_fail_val == opc) &&
823 CFS_FAIL_CHECK_ORSET(request_fail_id, CFS_FAIL_ONCE))
826 rc = lustre_msg_check_version(msg, h->th_version);
828 DEBUG_REQ(D_ERROR, req,
829 "%s: drop malformed request version=%08x expect=%08x",
830 tgt_name(tgt), lustre_msg_get_version(msg),
832 req->rq_status = -EINVAL;
833 rc = ptlrpc_error(req);
838 rc = tgt_handle_recovery(req, tsi->tsi_reply_fail_id);
839 if (likely(rc == 1)) {
840 rc = tgt_handle_request0(tsi, h, req);
846 req_capsule_fini(tsi->tsi_pill);
847 if (tsi->tsi_corpus != NULL) {
848 lu_object_put(tsi->tsi_env, tsi->tsi_corpus);
849 tsi->tsi_corpus = NULL;
853 EXPORT_SYMBOL(tgt_request_handle);
855 /** Assign high priority operations to the request if needed. */
856 int tgt_hpreq_handler(struct ptlrpc_request *req)
858 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
859 struct tgt_handler *h;
864 if (req->rq_export == NULL)
867 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
868 tsi->tsi_pill = &req->rq_pill;
869 tsi->tsi_env = req->rq_svc_thread->t_env;
870 tsi->tsi_tgt = class_exp2tgt(req->rq_export);
871 tsi->tsi_exp = req->rq_export;
873 h = tgt_handler_find_check(req);
879 rc = tgt_request_preprocess(tsi, h, req);
880 if (unlikely(rc != 0))
883 if (h->th_hp != NULL)
887 EXPORT_SYMBOL(tgt_hpreq_handler);
889 void tgt_counter_incr(struct obd_export *exp, int opcode)
891 lprocfs_counter_incr(exp->exp_obd->obd_stats, opcode);
892 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_stats != NULL)
893 lprocfs_counter_incr(exp->exp_nid_stats->nid_stats, opcode);
895 EXPORT_SYMBOL(tgt_counter_incr);
898 * Unified target generic handlers.
901 int tgt_connect_check_sptlrpc(struct ptlrpc_request *req, struct obd_export *exp)
903 struct lu_target *tgt = class_exp2tgt(exp);
904 struct sptlrpc_flavor flvr;
908 LASSERT(tgt->lut_obd);
909 LASSERT(tgt->lut_slice);
911 /* always allow ECHO client */
912 if (unlikely(strcmp(exp->exp_obd->obd_type->typ_name,
913 LUSTRE_ECHO_NAME) == 0)) {
914 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
918 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
919 read_lock(&tgt->lut_sptlrpc_lock);
920 sptlrpc_target_choose_flavor(&tgt->lut_sptlrpc_rset,
924 read_unlock(&tgt->lut_sptlrpc_lock);
926 spin_lock(&exp->exp_lock);
927 exp->exp_sp_peer = req->rq_sp_from;
928 exp->exp_flvr = flvr;
930 /* when on mgs, if no restriction is set, or if the client
931 * NID is on the local node, allow any flavor
933 if ((strcmp(exp->exp_obd->obd_type->typ_name,
934 LUSTRE_MGS_NAME) == 0) &&
935 (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_NULL ||
936 LNetIsPeerLocal(exp->exp_connection->c_peer.nid)))
937 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
939 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
940 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
941 CERROR("%s: unauthorized rpc flavor %x from %s, "
942 "expect %x\n", tgt_name(tgt),
944 libcfs_nid2str(req->rq_peer.nid),
945 exp->exp_flvr.sf_rpc);
948 spin_unlock(&exp->exp_lock);
950 if (exp->exp_sp_peer != req->rq_sp_from) {
951 CERROR("%s: RPC source %s doesn't match %s\n",
953 sptlrpc_part2name(req->rq_sp_from),
954 sptlrpc_part2name(exp->exp_sp_peer));
957 rc = sptlrpc_target_export_check(exp, req);
964 int tgt_adapt_sptlrpc_conf(struct lu_target *tgt)
966 struct sptlrpc_rule_set tmp_rset;
969 if (unlikely(tgt == NULL)) {
970 CERROR("No target passed");
974 sptlrpc_rule_set_init(&tmp_rset);
975 rc = sptlrpc_conf_target_get_rules(tgt->lut_obd, &tmp_rset);
977 CERROR("%s: failed get sptlrpc rules: rc = %d\n",
982 sptlrpc_target_update_exp_flavor(tgt->lut_obd, &tmp_rset);
984 write_lock(&tgt->lut_sptlrpc_lock);
985 sptlrpc_rule_set_free(&tgt->lut_sptlrpc_rset);
986 tgt->lut_sptlrpc_rset = tmp_rset;
987 write_unlock(&tgt->lut_sptlrpc_lock);
991 EXPORT_SYMBOL(tgt_adapt_sptlrpc_conf);
993 int tgt_connect(struct tgt_session_info *tsi)
995 struct ptlrpc_request *req = tgt_ses_req(tsi);
996 struct obd_connect_data *reply;
1001 /* XXX: better to call this check right after getting new export but
1002 * before last_rcvd slot allocation to avoid server load upon insecure
1003 * connects. This is to be fixed after unifiyng all targets.
1005 rc = tgt_connect_check_sptlrpc(req, tsi->tsi_exp);
1009 /* To avoid exposing partially initialized connection flags, changes up
1010 * to this point have been staged in reply->ocd_connect_flags. Now that
1011 * connection handling has completed successfully, atomically update
1012 * the connect flags in the shared export data structure. LU-1623 */
1013 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_CONNECT_DATA);
1014 spin_lock(&tsi->tsi_exp->exp_lock);
1015 *exp_connect_flags_ptr(tsi->tsi_exp) = reply->ocd_connect_flags;
1016 if (reply->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1017 *exp_connect_flags2_ptr(tsi->tsi_exp) =
1018 reply->ocd_connect_flags2;
1019 tsi->tsi_exp->exp_connect_data.ocd_brw_size = reply->ocd_brw_size;
1020 spin_unlock(&tsi->tsi_exp->exp_lock);
1022 if (strcmp(tsi->tsi_exp->exp_obd->obd_type->typ_name,
1023 LUSTRE_MDT_NAME) == 0) {
1024 rc = req_check_sepol(tsi->tsi_pill);
1028 if (reply->ocd_connect_flags & OBD_CONNECT_FLAGS2 &&
1029 reply->ocd_connect_flags2 & OBD_CONNECT2_ENCRYPT &&
1030 tsi->tsi_pill->rc_req->rq_export) {
1031 bool forbid_encrypt = true;
1032 struct lu_nodemap *nm =
1033 nodemap_get_from_exp(tsi->tsi_pill->rc_req->rq_export);
1036 /* nodemap_get_from_exp returns NULL in case
1037 * nodemap is not active, so we do not forbid
1039 forbid_encrypt = false;
1040 } else if (!IS_ERR(nm)) {
1041 forbid_encrypt = nm->nmf_forbid_encryption;
1046 GOTO(out, rc = -EACCES);
1052 obd_disconnect(class_export_get(tsi->tsi_exp));
1055 EXPORT_SYMBOL(tgt_connect);
1057 int tgt_disconnect(struct tgt_session_info *tsi)
1063 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_DISCONNECT_DELAY, cfs_fail_val);
1065 rc = target_handle_disconnect(tgt_ses_req(tsi));
1067 RETURN(err_serious(rc));
1071 EXPORT_SYMBOL(tgt_disconnect);
1074 * Unified target OBD handlers
1076 int tgt_obd_ping(struct tgt_session_info *tsi)
1082 /* The target-specific part of OBD_PING request handling.
1083 * It controls Filter Modification Data (FMD) expiration each time
1086 * Valid only for replayable targets, e.g. MDT and OFD
1088 if (tsi->tsi_exp->exp_obd->obd_replayable)
1089 tgt_fmd_expire(tsi->tsi_exp);
1091 rc = req_capsule_server_pack(tsi->tsi_pill);
1093 RETURN(err_serious(rc));
1097 EXPORT_SYMBOL(tgt_obd_ping);
1099 int tgt_obd_log_cancel(struct tgt_session_info *tsi)
1101 return err_serious(-EOPNOTSUPP);
1104 int tgt_send_buffer(struct tgt_session_info *tsi, struct lu_rdbuf *rdbuf)
1106 struct ptlrpc_request *req = tgt_ses_req(tsi);
1107 struct obd_export *exp = req->rq_export;
1108 struct ptlrpc_bulk_desc *desc;
1115 for (i = 0; i < rdbuf->rb_nbufs; i++) {
1116 unsigned int offset;
1118 offset = (unsigned long)rdbuf->rb_bufs[i].lb_buf & ~PAGE_MASK;
1119 pages += DIV_ROUND_UP(rdbuf->rb_bufs[i].lb_len + offset,
1123 desc = ptlrpc_prep_bulk_exp(req, pages, 1,
1124 PTLRPC_BULK_PUT_SOURCE,
1126 &ptlrpc_bulk_kiov_nopin_ops);
1130 for (i = 0; i < rdbuf->rb_nbufs; i++)
1131 desc->bd_frag_ops->add_iov_frag(desc,
1132 rdbuf->rb_bufs[i].lb_buf,
1133 rdbuf->rb_bufs[i].lb_len);
1135 rc = target_bulk_io(exp, desc);
1136 ptlrpc_free_bulk(desc);
1139 EXPORT_SYMBOL(tgt_send_buffer);
1141 int tgt_sendpage(struct tgt_session_info *tsi, struct lu_rdpg *rdpg, int nob)
1143 struct ptlrpc_request *req = tgt_ses_req(tsi);
1144 struct obd_export *exp = req->rq_export;
1145 struct ptlrpc_bulk_desc *desc;
1153 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, 1,
1154 PTLRPC_BULK_PUT_SOURCE,
1156 &ptlrpc_bulk_kiov_pin_ops);
1160 if (!(exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE))
1161 /* old client requires reply size in it's PAGE_SIZE,
1162 * which is rdpg->rp_count */
1163 nob = rdpg->rp_count;
1165 for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
1166 i++, tmpcount -= tmpsize) {
1167 tmpsize = min_t(int, tmpcount, PAGE_SIZE);
1168 desc->bd_frag_ops->add_kiov_frag(desc, rdpg->rp_pages[i], 0,
1172 LASSERT(desc->bd_nob == nob);
1173 rc = target_bulk_io(exp, desc);
1174 ptlrpc_free_bulk(desc);
1177 EXPORT_SYMBOL(tgt_sendpage);
1180 * OBD_IDX_READ handler
1182 static int tgt_obd_idx_read(struct tgt_session_info *tsi)
1184 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1185 struct lu_rdpg *rdpg = &tti->tti_u.rdpg.tti_rdpg;
1186 struct idx_info *req_ii, *rep_ii;
1191 memset(rdpg, 0, sizeof(*rdpg));
1192 req_capsule_set(tsi->tsi_pill, &RQF_OBD_IDX_READ);
1194 /* extract idx_info buffer from request & reply */
1195 req_ii = req_capsule_client_get(tsi->tsi_pill, &RMF_IDX_INFO);
1196 if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
1197 RETURN(err_serious(-EPROTO));
1199 rc = req_capsule_server_pack(tsi->tsi_pill);
1201 RETURN(err_serious(rc));
1203 rep_ii = req_capsule_server_get(tsi->tsi_pill, &RMF_IDX_INFO);
1205 RETURN(err_serious(-EFAULT));
1206 rep_ii->ii_magic = IDX_INFO_MAGIC;
1208 /* extract hash to start with */
1209 rdpg->rp_hash = req_ii->ii_hash_start;
1211 /* extract requested attributes */
1212 rdpg->rp_attrs = req_ii->ii_attrs;
1214 /* check that fid packed in request is valid and supported */
1215 if (!fid_is_sane(&req_ii->ii_fid))
1217 rep_ii->ii_fid = req_ii->ii_fid;
1220 rep_ii->ii_flags = req_ii->ii_flags;
1222 /* compute number of pages to allocate, ii_count is the number of 4KB
1224 if (req_ii->ii_count <= 0)
1225 GOTO(out, rc = -EFAULT);
1226 rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
1227 exp_max_brw_size(tsi->tsi_exp));
1228 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >> PAGE_SHIFT;
1230 /* allocate pages to store the containers */
1231 OBD_ALLOC_PTR_ARRAY(rdpg->rp_pages, rdpg->rp_npages);
1232 if (rdpg->rp_pages == NULL)
1233 GOTO(out, rc = -ENOMEM);
1234 for (i = 0; i < rdpg->rp_npages; i++) {
1235 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
1236 if (rdpg->rp_pages[i] == NULL)
1237 GOTO(out, rc = -ENOMEM);
1240 /* populate pages with key/record pairs */
1241 rc = dt_index_read(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, rep_ii, rdpg);
1245 LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
1246 "asked %d > %d\n", rc, rdpg->rp_count);
1248 /* send pages to client */
1249 rc = tgt_sendpage(tsi, rdpg, rc);
1254 if (rdpg->rp_pages) {
1255 for (i = 0; i < rdpg->rp_npages; i++)
1256 if (rdpg->rp_pages[i])
1257 __free_page(rdpg->rp_pages[i]);
1258 OBD_FREE_PTR_ARRAY(rdpg->rp_pages, rdpg->rp_npages);
1263 struct tgt_handler tgt_obd_handlers[] = {
1264 TGT_OBD_HDL (0, OBD_PING, tgt_obd_ping),
1265 TGT_OBD_HDL (0, OBD_IDX_READ, tgt_obd_idx_read)
1267 EXPORT_SYMBOL(tgt_obd_handlers);
1269 int tgt_sync(const struct lu_env *env, struct lu_target *tgt,
1270 struct dt_object *obj, __u64 start, __u64 end)
1276 /* if no objid is specified, it means "sync whole filesystem" */
1278 rc = dt_sync(env, tgt->lut_bottom);
1279 } else if (dt_version_get(env, obj) >
1280 tgt->lut_obd->obd_last_committed) {
1281 rc = dt_object_sync(env, obj, start, end);
1283 atomic_inc(&tgt->lut_sync_count);
1287 EXPORT_SYMBOL(tgt_sync);
1289 * Unified target DLM handlers.
1293 * Unified target BAST
1295 * Ensure data and metadata are synced to disk when lock is canceled if Sync on
1296 * Cancel (SOC) is enabled. If it's extent lock, normally sync obj is enough,
1297 * but if it's cross-MDT lock, because remote object version is not set, a
1298 * filesystem sync is needed.
1300 * \param lock server side lock
1301 * \param desc lock desc
1302 * \param data ldlm_cb_set_arg
1303 * \param flag indicates whether this cancelling or blocking callback
1304 * \retval 0 on success
1305 * \retval negative number on error
1307 static int tgt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1308 void *data, int flag)
1311 struct lu_target *tgt;
1312 struct dt_object *obj = NULL;
1318 tgt = class_exp2tgt(lock->l_export);
1320 if (unlikely(tgt == NULL)) {
1321 CDEBUG(D_ERROR, "%s: No target for connected export\n",
1322 class_exp2obd(lock->l_export)->obd_name);
1326 if (flag == LDLM_CB_CANCELING &&
1327 (lock->l_granted_mode & (LCK_EX | LCK_PW | LCK_GROUP)) &&
1328 (tgt->lut_sync_lock_cancel == SYNC_LOCK_CANCEL_ALWAYS ||
1329 (tgt->lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING &&
1330 ldlm_is_cbpending(lock))) &&
1331 ((exp_connect_flags(lock->l_export) & OBD_CONNECT_MDS_MDS) ||
1332 lock->l_resource->lr_type == LDLM_EXTENT)) {
1334 __u64 end = OBD_OBJECT_EOF;
1336 rc = lu_env_init(&env, LCT_DT_THREAD);
1337 if (unlikely(rc != 0))
1340 ost_fid_from_resid(&fid, &lock->l_resource->lr_name,
1341 tgt->lut_lsd.lsd_osd_index);
1343 if (lock->l_resource->lr_type == LDLM_EXTENT) {
1344 obj = dt_locate(&env, tgt->lut_bottom, &fid);
1346 GOTO(err_env, rc = PTR_ERR(obj));
1348 if (!dt_object_exists(obj))
1349 GOTO(err_put, rc = -ENOENT);
1351 start = lock->l_policy_data.l_extent.start;
1352 end = lock->l_policy_data.l_extent.end;
1355 rc = tgt_sync(&env, tgt, obj, start, end);
1357 CERROR("%s: syncing "DFID" (%llu-%llu) on lock "
1358 "cancel: rc = %d\n",
1359 tgt_name(tgt), PFID(&fid),
1360 lock->l_policy_data.l_extent.start,
1361 lock->l_policy_data.l_extent.end, rc);
1365 dt_object_put(&env, obj);
1370 rc = ldlm_server_blocking_ast(lock, desc, data, flag);
1374 static struct ldlm_callback_suite tgt_dlm_cbs = {
1375 .lcs_completion = ldlm_server_completion_ast,
1376 .lcs_blocking = tgt_blocking_ast,
1377 .lcs_glimpse = ldlm_server_glimpse_ast
1380 int tgt_enqueue(struct tgt_session_info *tsi)
1382 struct ptlrpc_request *req = tgt_ses_req(tsi);
1387 * tsi->tsi_dlm_req was already swapped and (if necessary) converted,
1388 * tsi->tsi_dlm_cbs was set by the *_req_handle() function.
1390 LASSERT(tsi->tsi_dlm_req != NULL);
1391 rc = ldlm_handle_enqueue0(tsi->tsi_exp->exp_obd->obd_namespace, req,
1392 tsi->tsi_dlm_req, &tgt_dlm_cbs);
1394 RETURN(err_serious(rc));
1396 switch (LUT_FAIL_CLASS(tsi->tsi_reply_fail_id)) {
1398 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_LDLM_REPLY_NET;
1401 tsi->tsi_reply_fail_id = OBD_FAIL_OST_LDLM_REPLY_NET;
1404 tsi->tsi_reply_fail_id = OBD_FAIL_MGS_LDLM_REPLY_NET;
1407 tsi->tsi_reply_fail_id = OBD_FAIL_LDLM_REPLY;
1410 RETURN(req->rq_status);
1412 EXPORT_SYMBOL(tgt_enqueue);
1414 int tgt_convert(struct tgt_session_info *tsi)
1416 struct ptlrpc_request *req = tgt_ses_req(tsi);
1420 LASSERT(tsi->tsi_dlm_req);
1421 rc = ldlm_handle_convert0(req, tsi->tsi_dlm_req);
1423 RETURN(err_serious(rc));
1425 RETURN(req->rq_status);
1428 int tgt_bl_callback(struct tgt_session_info *tsi)
1430 return err_serious(-EOPNOTSUPP);
1433 int tgt_cp_callback(struct tgt_session_info *tsi)
1435 return err_serious(-EOPNOTSUPP);
1438 /* generic LDLM target handler */
1439 struct tgt_handler tgt_dlm_handlers[] = {
1440 TGT_DLM_HDL(HAS_KEY, LDLM_ENQUEUE, tgt_enqueue),
1441 TGT_DLM_HDL(HAS_KEY, LDLM_CONVERT, tgt_convert),
1442 TGT_DLM_HDL_VAR(0, LDLM_BL_CALLBACK, tgt_bl_callback),
1443 TGT_DLM_HDL_VAR(0, LDLM_CP_CALLBACK, tgt_cp_callback)
1445 EXPORT_SYMBOL(tgt_dlm_handlers);
1448 * Unified target LLOG handlers.
1450 int tgt_llog_open(struct tgt_session_info *tsi)
1456 rc = llog_origin_handle_open(tgt_ses_req(tsi));
1460 EXPORT_SYMBOL(tgt_llog_open);
1462 int tgt_llog_read_header(struct tgt_session_info *tsi)
1468 rc = llog_origin_handle_read_header(tgt_ses_req(tsi));
1472 EXPORT_SYMBOL(tgt_llog_read_header);
1474 int tgt_llog_next_block(struct tgt_session_info *tsi)
1480 rc = llog_origin_handle_next_block(tgt_ses_req(tsi));
1484 EXPORT_SYMBOL(tgt_llog_next_block);
1486 int tgt_llog_prev_block(struct tgt_session_info *tsi)
1492 rc = llog_origin_handle_prev_block(tgt_ses_req(tsi));
1496 EXPORT_SYMBOL(tgt_llog_prev_block);
1498 /* generic llog target handler */
1499 struct tgt_handler tgt_llog_handlers[] = {
1500 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, tgt_llog_open),
1501 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
1502 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
1503 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
1505 EXPORT_SYMBOL(tgt_llog_handlers);
1508 * sec context handlers
1510 /* XXX: Implement based on mdt_sec_ctx_handle()? */
1511 static int tgt_sec_ctx_handle(struct tgt_session_info *tsi)
1516 struct tgt_handler tgt_sec_ctx_handlers[] = {
1517 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, tgt_sec_ctx_handle),
1518 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT, tgt_sec_ctx_handle),
1519 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, tgt_sec_ctx_handle),
1521 EXPORT_SYMBOL(tgt_sec_ctx_handlers);
1523 int (*tgt_lfsck_in_notify_local)(const struct lu_env *env,
1524 struct dt_device *key,
1525 struct lfsck_req_local *lrl,
1526 struct thandle *th) = NULL;
1528 void tgt_register_lfsck_in_notify_local(int (*notify)(const struct lu_env *,
1530 struct lfsck_req_local *,
1533 tgt_lfsck_in_notify_local = notify;
1535 EXPORT_SYMBOL(tgt_register_lfsck_in_notify_local);
1537 int (*tgt_lfsck_in_notify)(const struct lu_env *env,
1538 struct dt_device *key,
1539 struct lfsck_request *lr) = NULL;
1541 void tgt_register_lfsck_in_notify(int (*notify)(const struct lu_env *,
1543 struct lfsck_request *))
1545 tgt_lfsck_in_notify = notify;
1547 EXPORT_SYMBOL(tgt_register_lfsck_in_notify);
1549 static int (*tgt_lfsck_query)(const struct lu_env *env,
1550 struct dt_device *key,
1551 struct lfsck_request *req,
1552 struct lfsck_reply *rep,
1553 struct lfsck_query *que) = NULL;
1555 void tgt_register_lfsck_query(int (*query)(const struct lu_env *,
1557 struct lfsck_request *,
1558 struct lfsck_reply *,
1559 struct lfsck_query *))
1561 tgt_lfsck_query = query;
1563 EXPORT_SYMBOL(tgt_register_lfsck_query);
1565 /* LFSCK request handlers */
1566 static int tgt_handle_lfsck_notify(struct tgt_session_info *tsi)
1568 const struct lu_env *env = tsi->tsi_env;
1569 struct dt_device *key = tsi->tsi_tgt->lut_bottom;
1570 struct lfsck_request *lr;
1574 lr = req_capsule_client_get(tsi->tsi_pill, &RMF_LFSCK_REQUEST);
1578 rc = tgt_lfsck_in_notify(env, key, lr);
1583 static int tgt_handle_lfsck_query(struct tgt_session_info *tsi)
1585 struct lfsck_request *request;
1586 struct lfsck_reply *reply;
1590 request = req_capsule_client_get(tsi->tsi_pill, &RMF_LFSCK_REQUEST);
1591 if (request == NULL)
1594 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_LFSCK_REPLY);
1598 rc = tgt_lfsck_query(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
1599 request, reply, NULL);
1601 RETURN(rc < 0 ? rc : 0);
1604 struct tgt_handler tgt_lfsck_handlers[] = {
1605 TGT_LFSCK_HDL(HAS_REPLY, LFSCK_NOTIFY, tgt_handle_lfsck_notify),
1606 TGT_LFSCK_HDL(HAS_REPLY, LFSCK_QUERY, tgt_handle_lfsck_query),
1608 EXPORT_SYMBOL(tgt_lfsck_handlers);
1611 * initialize per-thread page pool (bug 5137).
1613 int tgt_io_thread_init(struct ptlrpc_thread *thread)
1615 struct tgt_thread_big_cache *tbc;
1619 LASSERT(thread != NULL);
1620 LASSERT(thread->t_data == NULL);
1622 OBD_ALLOC_LARGE(tbc, sizeof(*tbc));
1625 thread->t_data = tbc;
1628 EXPORT_SYMBOL(tgt_io_thread_init);
1631 * free per-thread pool created by tgt_thread_init().
1633 void tgt_io_thread_done(struct ptlrpc_thread *thread)
1635 struct tgt_thread_big_cache *tbc;
1639 LASSERT(thread != NULL);
1642 * be prepared to handle partially-initialized pools (because this is
1643 * called from ost_io_thread_init() for cleanup.
1645 tbc = thread->t_data;
1647 OBD_FREE_LARGE(tbc, sizeof(*tbc));
1648 thread->t_data = NULL;
1652 EXPORT_SYMBOL(tgt_io_thread_done);
1655 * Helper function for getting Data-on-MDT file server DLM lock
1656 * if asked by client.
1658 int tgt_mdt_data_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1659 struct lustre_handle *lh, int mode, __u64 *flags)
1661 union ldlm_policy_data policy = {
1662 .l_inodebits.bits = MDS_INODELOCK_DOM,
1668 LASSERT(lh != NULL);
1669 LASSERT(ns != NULL);
1670 LASSERT(!lustre_handle_is_used(lh));
1672 rc = ldlm_cli_enqueue_local(NULL, ns, res_id, LDLM_IBITS, &policy, mode,
1673 flags, ldlm_blocking_ast,
1674 ldlm_completion_ast, ldlm_glimpse_ast,
1675 NULL, 0, LVB_T_NONE, NULL, lh);
1677 RETURN(rc == ELDLM_OK ? 0 : -EIO);
1679 EXPORT_SYMBOL(tgt_mdt_data_lock);
1682 * Helper function for getting server side [start, start+count] DLM lock
1683 * if asked by client.
1685 int tgt_extent_lock(const struct lu_env *env, struct ldlm_namespace *ns,
1686 struct ldlm_res_id *res_id, __u64 start, __u64 end,
1687 struct lustre_handle *lh, int mode, __u64 *flags)
1689 union ldlm_policy_data policy;
1694 LASSERT(lh != NULL);
1695 LASSERT(ns != NULL);
1696 LASSERT(!lustre_handle_is_used(lh));
1698 policy.l_extent.gid = 0;
1699 policy.l_extent.start = start & PAGE_MASK;
1702 * If ->o_blocks is EOF it means "lock till the end of the file".
1703 * Otherwise, it's size of an extent or hole being punched (in bytes).
1705 if (end == OBD_OBJECT_EOF || end < start)
1706 policy.l_extent.end = OBD_OBJECT_EOF;
1708 policy.l_extent.end = end | ~PAGE_MASK;
1710 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_EXTENT, &policy,
1711 mode, flags, ldlm_blocking_ast,
1712 ldlm_completion_ast, ldlm_glimpse_ast,
1713 NULL, 0, LVB_T_NONE, NULL, lh);
1714 RETURN(rc == ELDLM_OK ? 0 : -EIO);
1716 EXPORT_SYMBOL(tgt_extent_lock);
1718 static int tgt_data_lock(const struct lu_env *env, struct obd_export *exp,
1719 struct ldlm_res_id *res_id, __u64 start, __u64 end,
1720 struct lustre_handle *lh, enum ldlm_mode mode)
1722 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
1725 /* MDT IO for data-on-mdt */
1726 if (exp->exp_connect_data.ocd_connect_flags & OBD_CONNECT_IBITS)
1727 return tgt_mdt_data_lock(ns, res_id, lh, mode, &flags);
1729 return tgt_extent_lock(env, ns, res_id, start, end, lh, mode, &flags);
1732 void tgt_data_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1734 LASSERT(lustre_handle_is_used(lh));
1735 ldlm_lock_decref(lh, mode);
1737 EXPORT_SYMBOL(tgt_data_unlock);
1739 static int tgt_brw_lock(const struct lu_env *env, struct obd_export *exp,
1740 struct ldlm_res_id *res_id, struct obd_ioobj *obj,
1741 struct niobuf_remote *nb, struct lustre_handle *lh,
1742 enum ldlm_mode mode)
1744 int nrbufs = obj->ioo_bufcnt;
1749 LASSERT(mode == LCK_PR || mode == LCK_PW);
1750 LASSERT(!lustre_handle_is_used(lh));
1752 if (exp->exp_obd->obd_recovering)
1755 if (nrbufs == 0 || !(nb[0].rnb_flags & OBD_BRW_SRVLOCK))
1758 for (i = 1; i < nrbufs; i++)
1759 if (!(nb[i].rnb_flags & OBD_BRW_SRVLOCK))
1762 return tgt_data_lock(env, exp, res_id, nb[0].rnb_offset,
1763 nb[nrbufs - 1].rnb_offset +
1764 nb[nrbufs - 1].rnb_len - 1, lh, mode);
1767 static void tgt_brw_unlock(struct obd_export *exp, struct obd_ioobj *obj,
1768 struct niobuf_remote *niob,
1769 struct lustre_handle *lh, enum ldlm_mode mode)
1773 LASSERT(mode == LCK_PR || mode == LCK_PW);
1774 LASSERT((!exp->exp_obd->obd_recovering && obj->ioo_bufcnt &&
1775 niob[0].rnb_flags & OBD_BRW_SRVLOCK) ==
1776 lustre_handle_is_used(lh));
1778 if (lustre_handle_is_used(lh))
1779 tgt_data_unlock(lh, mode);
1783 static int tgt_checksum_niobuf(struct lu_target *tgt,
1784 struct niobuf_local *local_nb, int npages,
1785 int opc, enum cksum_types cksum_type,
1788 struct ahash_request *req;
1789 unsigned int bufsize;
1791 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1793 req = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1795 CERROR("%s: unable to initialize checksum hash %s\n",
1796 tgt_name(tgt), cfs_crypto_hash_name(cfs_alg));
1797 return PTR_ERR(req);
1800 CDEBUG(D_INFO, "Checksum for algo %s\n", cfs_crypto_hash_name(cfs_alg));
1801 for (i = 0; i < npages; i++) {
1802 /* corrupt the data before we compute the checksum, to
1803 * simulate a client->OST data error */
1804 if (i == 0 && opc == OST_WRITE &&
1805 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) {
1806 int off = local_nb[i].lnb_page_offset & ~PAGE_MASK;
1807 int len = local_nb[i].lnb_len;
1808 struct page *np = tgt_page_to_corrupt;
1811 char *ptr = kmap_atomic(local_nb[i].lnb_page);
1812 char *ptr2 = page_address(np);
1814 memcpy(ptr2 + off, ptr + off, len);
1815 memcpy(ptr2 + off, "bad3", min(4, len));
1818 /* LU-8376 to preserve original index for
1819 * display in dump_all_bulk_pages() */
1822 cfs_crypto_hash_update_page(req, np, off,
1826 CERROR("%s: can't alloc page for corruption\n",
1830 cfs_crypto_hash_update_page(req, local_nb[i].lnb_page,
1831 local_nb[i].lnb_page_offset & ~PAGE_MASK,
1832 local_nb[i].lnb_len);
1834 /* corrupt the data after we compute the checksum, to
1835 * simulate an OST->client data error */
1836 if (i == 0 && opc == OST_READ &&
1837 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND)) {
1838 int off = local_nb[i].lnb_page_offset & ~PAGE_MASK;
1839 int len = local_nb[i].lnb_len;
1840 struct page *np = tgt_page_to_corrupt;
1843 char *ptr = kmap_atomic(local_nb[i].lnb_page);
1844 char *ptr2 = page_address(np);
1846 memcpy(ptr2 + off, ptr + off, len);
1847 memcpy(ptr2 + off, "bad4", min(4, len));
1850 /* LU-8376 to preserve original index for
1851 * display in dump_all_bulk_pages() */
1854 cfs_crypto_hash_update_page(req, np, off,
1858 CERROR("%s: can't alloc page for corruption\n",
1864 bufsize = sizeof(*cksum);
1865 err = cfs_crypto_hash_final(req, (unsigned char *)cksum, &bufsize);
1870 char dbgcksum_file_name[PATH_MAX];
1872 static void dump_all_bulk_pages(struct obdo *oa, int count,
1873 struct niobuf_local *local_nb,
1874 __u32 server_cksum, __u32 client_cksum)
1881 /* will only keep dump of pages on first error for the same range in
1882 * file/fid, not during the resends/retries. */
1883 snprintf(dbgcksum_file_name, sizeof(dbgcksum_file_name),
1884 "%s-checksum_dump-ost-"DFID":[%llu-%llu]-%x-%x",
1885 (strncmp(libcfs_debug_file_path_arr, "NONE", 4) != 0 ?
1886 libcfs_debug_file_path_arr :
1887 LIBCFS_DEBUG_FILE_PATH_DEFAULT),
1888 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1889 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1890 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1891 local_nb[0].lnb_file_offset,
1892 local_nb[count-1].lnb_file_offset +
1893 local_nb[count-1].lnb_len - 1, client_cksum, server_cksum);
1894 filp = filp_open(dbgcksum_file_name,
1895 O_CREAT | O_EXCL | O_WRONLY | O_LARGEFILE, 0600);
1899 CDEBUG(D_INFO, "%s: can't open to dump pages with "
1900 "checksum error: rc = %d\n", dbgcksum_file_name,
1903 CERROR("%s: can't open to dump pages with checksum "
1904 "error: rc = %d\n", dbgcksum_file_name, rc);
1908 for (i = 0; i < count; i++) {
1909 len = local_nb[i].lnb_len;
1910 buf = kmap(local_nb[i].lnb_page);
1912 rc = cfs_kernel_write(filp, buf, len, &filp->f_pos);
1914 CERROR("%s: wanted to write %u but got %d "
1915 "error\n", dbgcksum_file_name, len, rc);
1920 CDEBUG(D_INFO, "%s: wrote %d bytes\n",
1921 dbgcksum_file_name, rc);
1923 kunmap(local_nb[i].lnb_page);
1926 rc = vfs_fsync_range(filp, 0, LLONG_MAX, 1);
1928 CERROR("%s: sync returns %d\n", dbgcksum_file_name, rc);
1929 filp_close(filp, NULL);
1932 static int check_read_checksum(struct niobuf_local *local_nb, int npages,
1933 struct obd_export *exp, struct obdo *oa,
1934 const struct lnet_process_id *peer,
1935 __u32 client_cksum, __u32 server_cksum,
1936 enum cksum_types server_cksum_type)
1939 enum cksum_types cksum_type;
1942 /* unlikely to happen and only if resend does not occur due to cksum
1943 * control failure on Client */
1944 if (unlikely(server_cksum == client_cksum)) {
1945 CDEBUG(D_PAGE, "checksum %x confirmed upon retry\n",
1950 if (exp->exp_obd->obd_checksum_dump)
1951 dump_all_bulk_pages(oa, npages, local_nb, server_cksum,
1954 cksum_type = obd_cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1957 if (cksum_type != server_cksum_type)
1958 msg = "the server may have not used the checksum type specified"
1959 " in the original request - likely a protocol problem";
1961 msg = "should have changed on the client or in transit";
1963 start = local_nb[0].lnb_file_offset;
1964 end = local_nb[npages-1].lnb_file_offset +
1965 local_nb[npages-1].lnb_len - 1;
1967 LCONSOLE_ERROR_MSG(0x132, "%s: BAD READ CHECKSUM: %s: from %s inode "
1968 DFID " object "DOSTID" extent [%llu-%llu], client returned csum"
1969 " %x (type %x), server csum %x (type %x)\n",
1970 exp->exp_obd->obd_name,
1971 msg, libcfs_nid2str(peer->nid),
1972 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : 0ULL,
1973 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1974 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1976 start, end, client_cksum, cksum_type, server_cksum,
1982 static int tgt_pages2shortio(struct niobuf_local *local, int npages,
1983 unsigned char *buf, int size)
1985 int i, off, len, copied = size;
1988 for (i = 0; i < npages; i++) {
1989 off = local[i].lnb_page_offset & ~PAGE_MASK;
1990 len = local[i].lnb_len;
1992 CDEBUG(D_PAGE, "index %d offset = %d len = %d left = %d\n",
1997 ptr = kmap_atomic(local[i].lnb_page);
1998 memcpy(buf, ptr + off, len);
2003 return copied - size;
2006 static int tgt_checksum_niobuf_t10pi(struct lu_target *tgt,
2007 struct niobuf_local *local_nb,
2008 int npages, int opc,
2009 obd_dif_csum_fn *fn,
2013 enum cksum_types t10_cksum_type = tgt->lut_dt_conf.ddp_t10_cksum_type;
2014 unsigned char cfs_alg = cksum_obd2cfs(OBD_CKSUM_T10_TOP);
2015 const char *obd_name = tgt->lut_obd->obd_name;
2016 struct ahash_request *req;
2017 unsigned int bufsize;
2018 unsigned char *buffer;
2019 struct page *__page;
2022 int used_number = 0;
2028 __page = alloc_page(GFP_KERNEL);
2032 req = cfs_crypto_hash_init(cfs_alg, NULL, 0);
2034 CERROR("%s: unable to initialize checksum hash %s\n",
2035 tgt_name(tgt), cfs_crypto_hash_name(cfs_alg));
2036 return PTR_ERR(req);
2039 buffer = kmap(__page);
2040 guard_start = (__u16 *)buffer;
2041 guard_number = PAGE_SIZE / sizeof(*guard_start);
2042 for (i = 0; i < npages; i++) {
2043 /* corrupt the data before we compute the checksum, to
2044 * simulate a client->OST data error */
2045 if (i == 0 && opc == OST_WRITE &&
2046 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) {
2047 int off = local_nb[i].lnb_page_offset & ~PAGE_MASK;
2048 int len = local_nb[i].lnb_len;
2049 struct page *np = tgt_page_to_corrupt;
2052 char *ptr = kmap_atomic(local_nb[i].lnb_page);
2053 char *ptr2 = page_address(np);
2055 memcpy(ptr2 + off, ptr + off, len);
2056 memcpy(ptr2 + off, "bad3", min(4, len));
2059 /* LU-8376 to preserve original index for
2060 * display in dump_all_bulk_pages() */
2063 cfs_crypto_hash_update_page(req, np, off,
2067 CERROR("%s: can't alloc page for corruption\n",
2073 * The left guard number should be able to hold checksums of a
2076 if (t10_cksum_type && opc == OST_READ &&
2077 local_nb[i].lnb_len == PAGE_SIZE &&
2078 local_nb[i].lnb_guard_disk) {
2079 used = DIV_ROUND_UP(local_nb[i].lnb_len, sector_size);
2080 if (used > (guard_number - used_number)) {
2084 memcpy(guard_start + used_number,
2085 local_nb[i].lnb_guards,
2086 used * sizeof(*local_nb[i].lnb_guards));
2088 rc = obd_page_dif_generate_buffer(obd_name,
2089 local_nb[i].lnb_page,
2090 local_nb[i].lnb_page_offset & ~PAGE_MASK,
2091 local_nb[i].lnb_len, guard_start + used_number,
2092 guard_number - used_number, &used, sector_size,
2098 LASSERT(used <= MAX_GUARD_NUMBER);
2100 * If disk support T10PI checksum, copy guards to local_nb.
2101 * If the write is partial page, do not use the guards for bio
2102 * submission since the data might not be full-sector. The bio
2103 * guards will be generated later based on the full sectors. If
2104 * the sector size is 512B rather than 4 KB, or the page size
2105 * is larger than 4KB, this might drop some useful guards for
2106 * partial page write, but it will only add minimal extra time
2107 * of checksum calculation.
2109 if (t10_cksum_type && opc == OST_WRITE &&
2110 local_nb[i].lnb_len == PAGE_SIZE) {
2111 local_nb[i].lnb_guard_rpc = 1;
2112 memcpy(local_nb[i].lnb_guards,
2113 guard_start + used_number,
2114 used * sizeof(*local_nb[i].lnb_guards));
2117 used_number += used;
2118 if (used_number == guard_number) {
2119 cfs_crypto_hash_update_page(req, __page, 0,
2120 used_number * sizeof(*guard_start));
2124 /* corrupt the data after we compute the checksum, to
2125 * simulate an OST->client data error */
2126 if (unlikely(i == 0 && opc == OST_READ &&
2127 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND))) {
2128 int off = local_nb[i].lnb_page_offset & ~PAGE_MASK;
2129 int len = local_nb[i].lnb_len;
2130 struct page *np = tgt_page_to_corrupt;
2133 char *ptr = kmap_atomic(local_nb[i].lnb_page);
2134 char *ptr2 = page_address(np);
2136 memcpy(ptr2 + off, ptr + off, len);
2137 memcpy(ptr2 + off, "bad4", min(4, len));
2140 /* LU-8376 to preserve original index for
2141 * display in dump_all_bulk_pages() */
2144 cfs_crypto_hash_update_page(req, np, off,
2148 CERROR("%s: can't alloc page for corruption\n",
2157 if (used_number != 0)
2158 cfs_crypto_hash_update_page(req, __page, 0,
2159 used_number * sizeof(*guard_start));
2161 bufsize = sizeof(cksum);
2162 rc = cfs_crypto_hash_final(req, (unsigned char *)&cksum, &bufsize);
2167 __free_page(__page);
2171 static int tgt_checksum_niobuf_rw(struct lu_target *tgt,
2172 enum cksum_types cksum_type,
2173 struct niobuf_local *local_nb,
2174 int npages, int opc, u32 *check_sum)
2176 obd_dif_csum_fn *fn = NULL;
2177 int sector_size = 0;
2181 obd_t10_cksum2dif(cksum_type, &fn, §or_size);
2184 rc = tgt_checksum_niobuf_t10pi(tgt, local_nb, npages,
2185 opc, fn, sector_size,
2188 rc = tgt_checksum_niobuf(tgt, local_nb, npages, opc,
2189 cksum_type, check_sum);
2193 int tgt_brw_read(struct tgt_session_info *tsi)
2195 struct ptlrpc_request *req = tgt_ses_req(tsi);
2196 struct ptlrpc_bulk_desc *desc = NULL;
2197 struct obd_export *exp = tsi->tsi_exp;
2198 struct niobuf_remote *remote_nb;
2199 struct niobuf_local *local_nb;
2200 struct obd_ioobj *ioo;
2201 struct ost_body *body, *repbody;
2202 struct lustre_handle lockh = { 0 };
2203 int npages, nob = 0, rc, i, no_reply = 0,
2205 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
2206 const char *obd_name = exp->exp_obd->obd_name;
2210 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL &&
2211 ptlrpc_req2svc(req)->srv_req_portal != MDS_IO_PORTAL) {
2212 CERROR("%s: deny read request from %s to portal %u\n",
2213 tgt_name(tsi->tsi_tgt),
2214 obd_export_nid2str(req->rq_export),
2215 ptlrpc_req2svc(req)->srv_req_portal);
2219 req->rq_bulk_read = 1;
2221 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
2224 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
2225 cfs_fail_val : (obd_timeout + 1) / 4);
2227 /* Check if there is eviction in progress, and if so, wait for it to
2229 if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
2230 /* We do not care how long it takes */
2232 exp->exp_obd->obd_evict_inprogress_waitq,
2233 !atomic_read(&exp->exp_obd->obd_evict_inprogress));
2236 /* There must be big cache in current thread to process this request
2237 * if it is NULL then something went wrong and it wasn't allocated,
2238 * report -ENOMEM in that case */
2242 body = tsi->tsi_ost_body;
2243 LASSERT(body != NULL);
2245 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
2246 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
2248 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2249 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
2251 local_nb = tbc->local;
2253 rc = tgt_brw_lock(tsi->tsi_env, exp, &tsi->tsi_resid, ioo, remote_nb,
2259 * If getting the lock took more time than
2260 * client was willing to wait, drop it. b=11330
2262 if (ktime_get_real_seconds() > req->rq_deadline ||
2263 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
2265 CERROR("Dropping timed-out read from %s because locking object " DOSTID " took %lld seconds (limit was %lld).\n",
2266 libcfs_id2str(req->rq_peer), POSTID(&ioo->ioo_oid),
2267 ktime_get_real_seconds() - req->rq_arrival_time.tv_sec,
2268 req->rq_deadline - req->rq_arrival_time.tv_sec);
2269 GOTO(out_lock, rc = -ETIMEDOUT);
2272 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2273 repbody->oa = body->oa;
2275 npages = PTLRPC_MAX_BRW_PAGES;
2276 rc = obd_preprw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1,
2277 ioo, remote_nb, &npages, local_nb);
2281 if (body->oa.o_valid & OBD_MD_FLFLAGS &&
2282 body->oa.o_flags & OBD_FL_SHORT_IO) {
2285 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
2286 PTLRPC_BULK_PUT_SOURCE,
2288 &ptlrpc_bulk_kiov_nopin_ops);
2290 GOTO(out_commitrw, rc = -ENOMEM);
2294 npages_read = npages;
2295 for (i = 0; i < npages; i++) {
2296 int page_rc = local_nb[i].lnb_rc;
2305 if (page_rc != 0 && desc != NULL) { /* some data! */
2306 LASSERT(local_nb[i].lnb_page != NULL);
2307 desc->bd_frag_ops->add_kiov_frag
2308 (desc, local_nb[i].lnb_page,
2309 local_nb[i].lnb_page_offset & ~PAGE_MASK,
2313 if (page_rc != local_nb[i].lnb_len) { /* short read */
2314 local_nb[i].lnb_len = page_rc;
2315 npages_read = i + (page_rc != 0 ? 1 : 0);
2316 /* All subsequent pages should be 0 */
2317 while (++i < npages)
2318 LASSERT(local_nb[i].lnb_rc == 0);
2323 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
2324 u32 flag = body->oa.o_valid & OBD_MD_FLFLAGS ?
2325 body->oa.o_flags : 0;
2326 enum cksum_types cksum_type = obd_cksum_type_unpack(flag);
2328 repbody->oa.o_flags = obd_cksum_type_pack(obd_name,
2330 repbody->oa.o_valid = OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
2332 rc = tgt_checksum_niobuf_rw(tsi->tsi_tgt, cksum_type,
2333 local_nb, npages_read, OST_READ,
2334 &repbody->oa.o_cksum);
2336 GOTO(out_commitrw, rc);
2337 CDEBUG(D_PAGE, "checksum at read origin: %x\n",
2338 repbody->oa.o_cksum);
2340 /* if a resend it could be for a cksum error, so check Server
2341 * cksum with returned Client cksum (this should even cover
2342 * zero-cksum case) */
2343 if ((body->oa.o_valid & OBD_MD_FLFLAGS) &&
2344 (body->oa.o_flags & OBD_FL_RECOV_RESEND))
2345 check_read_checksum(local_nb, npages_read, exp,
2346 &body->oa, &req->rq_peer,
2348 repbody->oa.o_cksum, cksum_type);
2350 repbody->oa.o_valid = 0;
2352 /* We're finishing using body->oa as an input variable */
2354 /* Check if client was evicted while we were doing i/o before touching
2357 if (body->oa.o_valid & OBD_MD_FLFLAGS &&
2358 body->oa.o_flags & OBD_FL_SHORT_IO) {
2359 unsigned char *short_io_buf;
2362 short_io_buf = req_capsule_server_get(&req->rq_pill,
2364 short_io_size = req_capsule_get_size(&req->rq_pill,
2367 rc = tgt_pages2shortio(local_nb, npages_read,
2368 short_io_buf, short_io_size);
2370 req_capsule_shrink(&req->rq_pill,
2373 rc = rc > 0 ? 0 : rc;
2374 } else if (!CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2)) {
2375 rc = target_bulk_io(exp, desc);
2379 if (body->oa.o_valid & OBD_MD_FLFLAGS &&
2380 body->oa.o_flags & OBD_FL_SHORT_IO)
2381 req_capsule_shrink(&req->rq_pill, &RMF_SHORT_IO, 0,
2386 /* Must commit after prep above in all cases */
2387 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1, ioo,
2388 remote_nb, npages, local_nb, rc);
2390 tgt_brw_unlock(exp, ioo, remote_nb, &lockh, LCK_PR);
2392 if (desc && !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))
2393 ptlrpc_free_bulk(desc);
2398 ptlrpc_lprocfs_brw(req, nob);
2399 } else if (no_reply) {
2400 req->rq_no_reply = 1;
2401 /* reply out callback would free */
2402 ptlrpc_req_drop_rs(req);
2403 LCONSOLE_WARN("%s: Bulk IO read error with %s (at %s), "
2404 "client will retry: rc %d\n",
2406 obd_uuid2str(&exp->exp_client_uuid),
2407 obd_export_nid2str(exp), rc);
2409 /* send a bulk after reply to simulate a network delay or reordering
2410 * by a router - Note that !desc implies short io, so there is no bulk
2412 if (unlikely(CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2)) &&
2414 CDEBUG(D_INFO, "reorder BULK\n");
2417 target_bulk_io(exp, desc);
2418 ptlrpc_free_bulk(desc);
2423 EXPORT_SYMBOL(tgt_brw_read);
2425 static int tgt_shortio2pages(struct niobuf_local *local, int npages,
2426 unsigned char *buf, unsigned int size)
2431 for (i = 0; i < npages; i++) {
2432 off = local[i].lnb_page_offset & ~PAGE_MASK;
2433 len = local[i].lnb_len;
2438 CDEBUG(D_PAGE, "index %d offset = %d len = %d left = %d\n",
2440 ptr = kmap_atomic(local[i].lnb_page);
2443 memcpy(ptr + off, buf, len < size ? len : size);
2451 static void tgt_warn_on_cksum(struct ptlrpc_request *req,
2452 struct ptlrpc_bulk_desc *desc,
2453 struct niobuf_local *local_nb, int npages,
2454 u32 client_cksum, u32 server_cksum,
2457 struct obd_export *exp = req->rq_export;
2458 struct ost_body *body;
2462 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
2463 LASSERT(body != NULL);
2465 if (desc && req->rq_peer.nid != desc->bd_sender) {
2467 router = libcfs_nid2str(desc->bd_sender);
2470 if (exp->exp_obd->obd_checksum_dump)
2471 dump_all_bulk_pages(&body->oa, npages, local_nb, server_cksum,
2475 CDEBUG_LIMIT(D_INFO, "client csum %x, server csum %x\n",
2476 client_cksum, server_cksum);
2480 LCONSOLE_ERROR_MSG(0x168, "%s: BAD WRITE CHECKSUM: from %s%s%s inode "
2481 DFID" object "DOSTID" extent [%llu-%llu"
2482 "]: client csum %x, server csum %x\n",
2483 exp->exp_obd->obd_name, libcfs_id2str(req->rq_peer),
2485 body->oa.o_valid & OBD_MD_FLFID ?
2486 body->oa.o_parent_seq : (__u64)0,
2487 body->oa.o_valid & OBD_MD_FLFID ?
2488 body->oa.o_parent_oid : 0,
2489 body->oa.o_valid & OBD_MD_FLFID ?
2490 body->oa.o_parent_ver : 0,
2491 POSTID(&body->oa.o_oi),
2492 local_nb[0].lnb_file_offset,
2493 local_nb[npages-1].lnb_file_offset +
2494 local_nb[npages - 1].lnb_len - 1,
2495 client_cksum, server_cksum);
2498 int tgt_brw_write(struct tgt_session_info *tsi)
2500 struct ptlrpc_request *req = tgt_ses_req(tsi);
2501 struct ptlrpc_bulk_desc *desc = NULL;
2502 struct obd_export *exp = req->rq_export;
2503 struct niobuf_remote *remote_nb;
2504 struct niobuf_local *local_nb;
2505 struct obd_ioobj *ioo;
2506 struct ost_body *body, *repbody;
2507 struct lustre_handle lockh = {0};
2509 int objcount, niocount, npages;
2511 enum cksum_types cksum_type = OBD_CKSUM_CRC32;
2512 bool no_reply = false, mmap;
2513 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
2514 bool wait_sync = false;
2515 const char *obd_name = exp->exp_obd->obd_name;
2516 /* '1' for consistency with code that checks !mpflag to restore */
2517 unsigned int mpflags = 1;
2521 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL &&
2522 ptlrpc_req2svc(req)->srv_req_portal != MDS_IO_PORTAL) {
2523 CERROR("%s: deny write request from %s to portal %u\n",
2524 tgt_name(tsi->tsi_tgt),
2525 obd_export_nid2str(req->rq_export),
2526 ptlrpc_req2svc(req)->srv_req_portal);
2527 RETURN(err_serious(-EPROTO));
2530 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC))
2531 RETURN(err_serious(-ENOSPC));
2532 if (OBD_FAIL_TIMEOUT(OBD_FAIL_OST_EROFS, 1))
2533 RETURN(err_serious(-EROFS));
2535 req->rq_bulk_write = 1;
2537 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
2538 RETURN(err_serious(-EIO));
2539 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK2))
2540 RETURN(err_serious(-EFAULT));
2542 /* pause before transaction has been started */
2543 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
2544 cfs_fail_val : (obd_timeout + 1) / 4);
2546 /* Delay write commit to show stale size information */
2547 CFS_FAIL_TIMEOUT(OBD_FAIL_OSC_NO_SIZE_DATA, cfs_fail_val);
2549 /* There must be big cache in current thread to process this request
2550 * if it is NULL then something went wrong and it wasn't allocated,
2551 * report -ENOMEM in that case */
2555 body = tsi->tsi_ost_body;
2556 LASSERT(body != NULL);
2558 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2559 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
2561 objcount = req_capsule_get_size(&req->rq_pill, &RMF_OBD_IOOBJ,
2562 RCL_CLIENT) / sizeof(*ioo);
2564 for (niocount = i = 0; i < objcount; i++)
2565 niocount += ioo[i].ioo_bufcnt;
2567 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2568 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
2569 if (niocount != req_capsule_get_size(&req->rq_pill,
2570 &RMF_NIOBUF_REMOTE, RCL_CLIENT) /
2572 RETURN(err_serious(-EPROTO));
2574 if ((remote_nb[0].rnb_flags & OBD_BRW_MEMALLOC) &&
2575 ptlrpc_connection_is_local(exp->exp_connection))
2576 mpflags = memalloc_noreclaim_save();
2578 req_capsule_set_size(&req->rq_pill, &RMF_RCS, RCL_SERVER,
2579 niocount * sizeof(*rcs));
2580 rc = req_capsule_server_pack(&req->rq_pill);
2582 GOTO(out, rc = err_serious(rc));
2584 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_PACK, cfs_fail_val);
2585 rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
2587 local_nb = tbc->local;
2589 rc = tgt_brw_lock(tsi->tsi_env, exp, &tsi->tsi_resid, ioo, remote_nb,
2595 * If getting the lock took more time than
2596 * client was willing to wait, drop it. b=11330
2598 if (ktime_get_real_seconds() > req->rq_deadline ||
2599 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
2601 CERROR("%s: Dropping timed-out write from %s because locking object " DOSTID " took %lld seconds (limit was %lld).\n",
2602 tgt_name(tsi->tsi_tgt), libcfs_id2str(req->rq_peer),
2603 POSTID(&ioo->ioo_oid),
2604 ktime_get_real_seconds() - req->rq_arrival_time.tv_sec,
2605 req->rq_deadline - req->rq_arrival_time.tv_sec);
2606 GOTO(out_lock, rc = -ETIMEDOUT);
2609 /* Because we already sync grant info with client when reconnect,
2610 * grant info will be cleared for resent req, then fed_grant and
2611 * total_grant will not be modified in following preprw_write */
2612 if (lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) {
2613 DEBUG_REQ(D_CACHE, req, "clear resent/replay req grant info");
2614 body->oa.o_valid &= ~OBD_MD_FLGRANT;
2617 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2618 if (repbody == NULL)
2619 GOTO(out_lock, rc = -ENOMEM);
2620 repbody->oa = body->oa;
2622 npages = PTLRPC_MAX_BRW_PAGES;
2623 rc = obd_preprw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
2624 objcount, ioo, remote_nb, &npages, local_nb);
2627 if (body->oa.o_valid & OBD_MD_FLFLAGS &&
2628 body->oa.o_flags & OBD_FL_SHORT_IO) {
2629 unsigned int short_io_size;
2630 unsigned char *short_io_buf;
2632 short_io_size = req_capsule_get_size(&req->rq_pill,
2635 short_io_buf = req_capsule_client_get(&req->rq_pill,
2637 CDEBUG(D_INFO, "Client use short io for data transfer,"
2638 " size = %d\n", short_io_size);
2640 /* Copy short io buf to pages */
2641 rc = tgt_shortio2pages(local_nb, npages, short_io_buf,
2645 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
2646 PTLRPC_BULK_GET_SINK,
2648 &ptlrpc_bulk_kiov_nopin_ops);
2650 GOTO(skip_transfer, rc = -ENOMEM);
2652 /* NB Having prepped, we must commit... */
2653 for (i = 0; i < npages; i++)
2654 desc->bd_frag_ops->add_kiov_frag(desc,
2655 local_nb[i].lnb_page,
2656 local_nb[i].lnb_page_offset & ~PAGE_MASK,
2657 local_nb[i].lnb_len);
2659 rc = sptlrpc_svc_prep_bulk(req, desc);
2661 GOTO(skip_transfer, rc);
2663 rc = target_bulk_io(exp, desc);
2669 if (body->oa.o_valid & OBD_MD_FLCKSUM && rc == 0) {
2670 static int cksum_counter;
2672 if (body->oa.o_valid & OBD_MD_FLFLAGS)
2673 cksum_type = obd_cksum_type_unpack(body->oa.o_flags);
2675 repbody->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
2676 repbody->oa.o_flags &= ~OBD_FL_CKSUM_ALL;
2677 repbody->oa.o_flags |= obd_cksum_type_pack(obd_name,
2680 rc = tgt_checksum_niobuf_rw(tsi->tsi_tgt, cksum_type,
2681 local_nb, npages, OST_WRITE,
2682 &repbody->oa.o_cksum);
2684 GOTO(out_commitrw, rc);
2688 if (unlikely(body->oa.o_cksum != repbody->oa.o_cksum)) {
2689 mmap = (body->oa.o_valid & OBD_MD_FLFLAGS &&
2690 body->oa.o_flags & OBD_FL_MMAP);
2692 tgt_warn_on_cksum(req, desc, local_nb, npages,
2694 repbody->oa.o_cksum, mmap);
2696 } else if ((cksum_counter & (-cksum_counter)) ==
2698 CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n",
2699 cksum_counter, libcfs_id2str(req->rq_peer),
2700 repbody->oa.o_cksum);
2704 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK2, cfs_fail_val);
2707 /* Must commit after prep above in all cases */
2708 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
2709 objcount, ioo, remote_nb, npages, local_nb, rc);
2710 if (rc == -ENOTCONN)
2711 /* quota acquire process has been given up because
2712 * either the client has been evicted or the client
2713 * has timed out the request already */
2716 for (i = 0; i < niocount; i++) {
2717 if (!(local_nb[i].lnb_flags & OBD_BRW_ASYNC)) {
2723 * Disable sending mtime back to the client. If the client locked the
2724 * whole object, then it has already updated the mtime on its side,
2725 * otherwise it will have to glimpse anyway (see bug 21489, comment 32)
2727 repbody->oa.o_valid &= ~(OBD_MD_FLMTIME | OBD_MD_FLATIME);
2732 /* set per-requested niobuf return codes */
2733 for (i = j = 0; i < niocount; i++) {
2734 int len = remote_nb[i].rnb_len;
2739 LASSERT(j < npages);
2740 if (local_nb[j].lnb_rc < 0)
2741 rcs[i] = local_nb[j].lnb_rc;
2742 len -= local_nb[j].lnb_len;
2747 LASSERT(j == npages);
2748 ptlrpc_lprocfs_brw(req, nob);
2751 tgt_brw_unlock(exp, ioo, remote_nb, &lockh, LCK_PW);
2753 ptlrpc_free_bulk(desc);
2755 if (unlikely(no_reply || (exp->exp_obd->obd_no_transno && wait_sync))) {
2756 req->rq_no_reply = 1;
2757 /* reply out callback would free */
2758 ptlrpc_req_drop_rs(req);
2759 if (!exp->exp_obd->obd_no_transno)
2760 LCONSOLE_WARN("%s: Bulk IO write error with %s (at %s),"
2761 " client will retry: rc = %d\n",
2763 obd_uuid2str(&exp->exp_client_uuid),
2764 obd_export_nid2str(exp), rc);
2768 memalloc_noreclaim_restore(mpflags);
2772 EXPORT_SYMBOL(tgt_brw_write);
2775 * Common request handler for OST_SEEK RPC.
2777 * Unified request handling for OST_SEEK RPC.
2778 * It takes object by its FID, does needed lseek and packs result
2779 * into reply. Only SEEK_HOLE and SEEK_DATA are supported.
2781 * \param[in] tsi target session environment for this request
2783 * \retval 0 if successful
2784 * \retval negative value on error
2786 int tgt_lseek(struct tgt_session_info *tsi)
2788 struct lustre_handle lh = { 0 };
2789 struct dt_object *dob;
2790 struct ost_body *repbody;
2791 loff_t offset = tsi->tsi_ost_body->oa.o_size;
2792 int whence = tsi->tsi_ost_body->oa.o_mode;
2798 if (whence != SEEK_HOLE && whence != SEEK_DATA)
2801 /* Negative offset is prohibited on wire and must be handled on client
2802 * prior sending RPC.
2807 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2808 if (repbody == NULL)
2810 repbody->oa = tsi->tsi_ost_body->oa;
2812 srvlock = tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
2813 tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK;
2815 rc = tgt_data_lock(tsi->tsi_env, tsi->tsi_exp, &tsi->tsi_resid,
2816 offset, OBD_OBJECT_EOF, &lh, LCK_PR);
2821 dob = dt_locate(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, &tsi->tsi_fid);
2823 GOTO(out, rc = PTR_ERR(dob));
2825 if (!dt_object_exists(dob))
2826 GOTO(obj_put, rc = -ENOENT);
2828 repbody->oa.o_size = dt_lseek(tsi->tsi_env, dob, offset, whence);
2831 dt_object_put(tsi->tsi_env, dob);
2834 tgt_data_unlock(&lh, LCK_PR);
2838 EXPORT_SYMBOL(tgt_lseek);
2840 /* Check if request can be reconstructed from saved reply data
2841 * A copy of the reply data is returned in @trd if the pointer is not NULL
2843 int req_can_reconstruct(struct ptlrpc_request *req,
2844 struct tg_reply_data *trd)
2846 struct tg_export_data *ted = &req->rq_export->exp_target_data;
2847 struct lsd_client_data *lcd = ted->ted_lcd;
2850 if (tgt_is_multimodrpcs_client(req->rq_export))
2851 return tgt_lookup_reply(req, trd);
2853 mutex_lock(&ted->ted_lcd_lock);
2854 found = req->rq_xid == lcd->lcd_last_xid ||
2855 req->rq_xid == lcd->lcd_last_close_xid;
2857 if (found && trd != NULL) {
2858 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
2859 trd->trd_reply.lrd_xid = lcd->lcd_last_close_xid;
2860 trd->trd_reply.lrd_transno =
2861 lcd->lcd_last_close_transno;
2862 trd->trd_reply.lrd_result = lcd->lcd_last_close_result;
2864 trd->trd_reply.lrd_xid = lcd->lcd_last_xid;
2865 trd->trd_reply.lrd_transno = lcd->lcd_last_transno;
2866 trd->trd_reply.lrd_result = lcd->lcd_last_result;
2867 trd->trd_reply.lrd_data = lcd->lcd_last_data;
2868 trd->trd_pre_versions[0] = lcd->lcd_pre_versions[0];
2869 trd->trd_pre_versions[1] = lcd->lcd_pre_versions[1];
2870 trd->trd_pre_versions[2] = lcd->lcd_pre_versions[2];
2871 trd->trd_pre_versions[3] = lcd->lcd_pre_versions[3];
2874 mutex_unlock(&ted->ted_lcd_lock);
2878 EXPORT_SYMBOL(req_can_reconstruct);