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) 2012, 2015, 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 #ifdef HAVE_UIDGID_HEADER
39 # include <linux/uidgid.h>
43 #include <obd_class.h>
44 #include <obd_cksum.h>
45 #include <md_object.h>
46 #include <lustre_lfsck.h>
47 #include <lustre_nodemap.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 HABEO_CORPUS 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 & HABEO_CORPUS) && !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 = tsi->tsi_exp->exp_target_data.ted_nodemap;
260 body->oa.o_uid = nodemap_map_id(nodemap, NODEMAP_UID,
261 NODEMAP_CLIENT_TO_FS,
263 body->oa.o_gid = nodemap_map_id(nodemap, NODEMAP_GID,
264 NODEMAP_CLIENT_TO_FS,
267 tsi->tsi_ost_body = body;
268 tsi->tsi_fid = body->oa.o_oi.oi_fid;
270 if (req_capsule_has_field(pill, &RMF_OBD_IOOBJ, RCL_CLIENT)) {
271 rc = tgt_io_data_unpack(tsi, &body->oa.o_oi);
276 if (!(body->oa.o_valid & OBD_MD_FLID)) {
277 if (flags & HABEO_CORPUS) {
278 CERROR("%s: OBD_MD_FLID flag is not set in ost_body "
279 "but OID/FID is mandatory with HABEO_CORPUS\n",
280 tgt_name(tsi->tsi_tgt));
287 ost_fid_build_resid(&tsi->tsi_fid, &tsi->tsi_resid);
290 * OST doesn't get object in advance for further use to prevent
291 * situations with nested object_find which is potential deadlock.
293 tsi->tsi_corpus = NULL;
298 * Do necessary preprocessing according to handler ->th_flags.
300 static int tgt_request_preprocess(struct tgt_session_info *tsi,
301 struct tgt_handler *h,
302 struct ptlrpc_request *req)
304 struct req_capsule *pill = tsi->tsi_pill;
305 __u32 flags = h->th_flags;
310 if (tsi->tsi_preprocessed)
313 LASSERT(h->th_act != NULL);
314 LASSERT(h->th_opc == lustre_msg_get_opc(req->rq_reqmsg));
315 LASSERT(current->journal_info == NULL);
317 LASSERT(ergo(flags & (HABEO_CORPUS | HABEO_REFERO),
319 if (h->th_fmt != NULL) {
320 req_capsule_set(pill, h->th_fmt);
321 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT)) {
322 rc = tgt_mdt_body_unpack(tsi, flags);
325 } else if (req_capsule_has_field(pill, &RMF_OST_BODY,
327 rc = tgt_ost_body_unpack(tsi, flags);
333 if (flags & MUTABOR && tgt_conn_flags(tsi) & OBD_CONNECT_RDONLY)
336 if (flags & HABEO_CLAVIS) {
337 struct ldlm_request *dlm_req;
339 LASSERT(h->th_fmt != NULL);
341 dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
342 if (dlm_req != NULL) {
343 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
345 dlm_req->lock_desc.l_policy_data.\
346 l_inodebits.bits == 0)) {
348 * Lock without inodebits makes no sense and
349 * will oops later in ldlm. If client miss to
350 * set such bits, do not trigger ASSERTION.
352 * For liblustre flock case, it maybe zero.
356 tsi->tsi_dlm_req = dlm_req;
362 tsi->tsi_preprocessed = 1;
367 * Invoke handler for this request opc. Also do necessary preprocessing
368 * (according to handler ->th_flags), and post-processing (setting of
369 * ->last_{xid,committed}).
371 static int tgt_handle_request0(struct tgt_session_info *tsi,
372 struct tgt_handler *h,
373 struct ptlrpc_request *req)
377 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
382 /* When dealing with sec context requests, no export is associated yet,
383 * because these requests are sent before *_CONNECT requests.
384 * A NULL req->rq_export means the normal *_common_slice handlers will
385 * not be called, because there is no reference to the target.
386 * So deal with them by hand and jump directly to target_send_reply().
390 case SEC_CTX_INIT_CONT:
392 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
397 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
398 * to put same checks into handlers like mdt_close(), mdt_reint(),
399 * etc., without talking to mdt authors first. Checking same thing
400 * there again is useless and returning 0 error without packing reply
401 * is buggy! Handlers either pack reply or return error.
403 * We return 0 here and do not send any reply in order to emulate
404 * network failure. Do not send any reply in case any of NET related
405 * fail_id has occured.
407 if (OBD_FAIL_CHECK_ORSET(h->th_fail_id, OBD_FAIL_ONCE))
409 if (unlikely(lustre_msg_get_opc(req->rq_reqmsg) == MDS_REINT &&
410 OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_MULTI_NET)))
413 rc = tgt_request_preprocess(tsi, h, req);
414 /* pack reply if reply format is fixed */
415 if (rc == 0 && h->th_flags & HABEO_REFERO) {
417 if (req_capsule_has_field(tsi->tsi_pill, &RMF_MDT_MD,
419 req_capsule_set_size(tsi->tsi_pill, &RMF_MDT_MD,
421 tsi->tsi_mdt_body->mbo_eadatasize);
422 if (req_capsule_has_field(tsi->tsi_pill, &RMF_LOGCOOKIES,
424 req_capsule_set_size(tsi->tsi_pill, &RMF_LOGCOOKIES,
427 rc = req_capsule_server_pack(tsi->tsi_pill);
430 if (likely(rc == 0)) {
432 * Process request, there can be two types of rc:
433 * 1) errors with msg unpack/pack, other failures outside the
434 * operation itself. This is counted as serious errors;
435 * 2) errors during fs operation, should be placed in rq_status
439 if (!is_serious(rc) &&
440 !req->rq_no_reply && req->rq_reply_state == NULL) {
441 DEBUG_REQ(D_ERROR, req, "%s \"handler\" %s did not "
442 "pack reply and returned 0 error\n",
443 tgt_name(tsi->tsi_tgt), h->th_name);
446 serious = is_serious(rc);
447 rc = clear_serious(rc);
455 * ELDLM_* codes which > 0 should be in rq_status only as well as
456 * all non-serious errors.
458 if (rc > 0 || !serious)
461 LASSERT(current->journal_info == NULL);
463 if (likely(rc == 0 && req->rq_export))
464 target_committed_to_req(req);
467 target_send_reply(req, rc, tsi->tsi_reply_fail_id);
471 static int tgt_filter_recovery_request(struct ptlrpc_request *req,
472 struct obd_device *obd, int *process)
474 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
481 case MDS_SYNC: /* used in unmounting */
495 case MDS_HSM_PROGRESS:
496 case MDS_HSM_STATE_SET:
497 case MDS_HSM_REQUEST:
498 *process = target_queue_recovery_request(req, obd);
502 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
509 * Handle recovery. Return:
510 * +1: continue request processing;
511 * -ve: abort immediately with the given error code;
512 * 0: send reply with error code in req->rq_status;
514 static int tgt_handle_recovery(struct ptlrpc_request *req, int reply_fail_id)
518 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
523 case SEC_CTX_INIT_CONT:
528 if (!req->rq_export->exp_obd->obd_replayable)
531 /* sanity check: if the xid matches, the request must be marked as a
532 * resent or replayed */
533 if (req_can_reconstruct(req, NULL)) {
534 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
535 (MSG_RESENT | MSG_REPLAY))) {
536 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches "
537 "saved xid, expected REPLAY or RESENT flag "
539 lustre_msg_get_flags(req->rq_reqmsg));
540 req->rq_status = -ENOTCONN;
544 /* else: note the opposite is not always true; a RESENT req after a
545 * failover will usually not match the last_xid, since it was likely
546 * never committed. A REPLAYed request will almost never match the
547 * last xid, however it could for a committed, but still retained,
550 /* Check for aborted recovery... */
551 if (unlikely(req->rq_export->exp_obd->obd_recovering)) {
555 DEBUG_REQ(D_INFO, req, "Got new replay");
556 rc = tgt_filter_recovery_request(req, req->rq_export->exp_obd,
558 if (rc != 0 || !should_process)
560 else if (should_process < 0) {
561 req->rq_status = should_process;
562 rc = ptlrpc_error(req);
569 /* Initial check for request, it is validation mostly */
570 static struct tgt_handler *tgt_handler_find_check(struct ptlrpc_request *req)
572 struct tgt_handler *h;
573 struct tgt_opc_slice *s;
574 struct lu_target *tgt;
575 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
579 tgt = class_exp2tgt(req->rq_export);
580 if (unlikely(tgt == NULL)) {
581 DEBUG_REQ(D_ERROR, req, "%s: No target for connected export\n",
582 class_exp2obd(req->rq_export)->obd_name);
583 RETURN(ERR_PTR(-EINVAL));
586 for (s = tgt->lut_slice; s->tos_hs != NULL; s++)
587 if (s->tos_opc_start <= opc && opc < s->tos_opc_end)
590 /* opcode was not found in slice */
591 if (unlikely(s->tos_hs == NULL)) {
592 CERROR("%s: no handlers for opcode 0x%x\n", tgt_name(tgt),
594 RETURN(ERR_PTR(-ENOTSUPP));
597 LASSERT(opc >= s->tos_opc_start && opc < s->tos_opc_end);
598 h = s->tos_hs + (opc - s->tos_opc_start);
599 if (unlikely(h->th_opc == 0)) {
600 CERROR("%s: unsupported opcode 0x%x\n", tgt_name(tgt), opc);
601 RETURN(ERR_PTR(-ENOTSUPP));
607 static int process_req_last_xid(struct ptlrpc_request *req)
612 /* check request's xid is consistent with export's last_xid */
613 last_xid = lustre_msg_get_last_xid(req->rq_reqmsg);
614 if (last_xid > req->rq_export->exp_last_xid)
615 req->rq_export->exp_last_xid = last_xid;
617 if (req->rq_xid == 0 ||
618 (req->rq_xid <= req->rq_export->exp_last_xid)) {
619 DEBUG_REQ(D_ERROR, req, "Unexpected xid %llx vs. "
620 "last_xid %llx\n", req->rq_xid,
621 req->rq_export->exp_last_xid);
622 /* Some request is allowed to be sent during replay,
623 * such as OUT update requests, FLD requests, so it
624 * is possible that replay requests has smaller XID
625 * than the exp_last_xid.
627 * Some non-replay requests may have smaller XID as
630 * - Client send a no_resend RPC, like statfs;
631 * - The RPC timedout (or some other error) on client,
632 * then it's removed from the unreplied list;
633 * - Client send some other request to bump the
634 * exp_last_xid on server;
635 * - The former RPC got chance to be processed;
637 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
641 /* try to release in-memory reply data */
642 if (tgt_is_multimodrpcs_client(req->rq_export)) {
643 tgt_handle_received_xid(req->rq_export,
644 lustre_msg_get_last_xid(req->rq_reqmsg));
645 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
646 (MSG_RESENT | MSG_REPLAY)))
647 tgt_handle_tag(req->rq_export,
648 lustre_msg_get_tag(req->rq_reqmsg));
653 int tgt_request_handle(struct ptlrpc_request *req)
655 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
657 struct lustre_msg *msg = req->rq_reqmsg;
658 struct tgt_handler *h;
659 struct lu_target *tgt;
660 int request_fail_id = 0;
661 __u32 opc = lustre_msg_get_opc(msg);
662 struct obd_device *obd;
664 bool is_connect = false;
667 /* Refill the context, to make sure all thread keys are allocated */
668 lu_env_refill(req->rq_svc_thread->t_env);
670 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
671 tsi->tsi_pill = &req->rq_pill;
672 tsi->tsi_env = req->rq_svc_thread->t_env;
674 /* if request has export then get handlers slice from corresponding
675 * target, otherwise that should be connect operation */
676 if (opc == MDS_CONNECT || opc == OST_CONNECT ||
677 opc == MGS_CONNECT) {
679 req_capsule_set(&req->rq_pill, &RQF_CONNECT);
680 rc = target_handle_connect(req);
682 rc = ptlrpc_error(req);
685 /* recovery-small test 18c asks to drop connect reply */
686 if (unlikely(opc == OST_CONNECT &&
687 OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET2)))
691 if (unlikely(!class_connected_export(req->rq_export))) {
692 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT ||
693 opc == SEC_CTX_FINI) {
694 /* sec context initialization has to be handled
695 * by hand in tgt_handle_request0() */
696 tsi->tsi_reply_fail_id = OBD_FAIL_SEC_CTX_INIT_NET;
698 GOTO(handle_recov, rc = 0);
700 CDEBUG(D_HA, "operation %d on unconnected OST from %s\n",
701 opc, libcfs_id2str(req->rq_peer));
702 req->rq_status = -ENOTCONN;
703 rc = ptlrpc_error(req);
707 tsi->tsi_tgt = tgt = class_exp2tgt(req->rq_export);
708 tsi->tsi_exp = req->rq_export;
709 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_JOBSTATS)
710 tsi->tsi_jobid = lustre_msg_get_jobid(req->rq_reqmsg);
712 tsi->tsi_jobid = NULL;
715 DEBUG_REQ(D_ERROR, req, "%s: No target for connected export\n",
716 class_exp2obd(req->rq_export)->obd_name);
717 req->rq_status = -EINVAL;
718 rc = ptlrpc_error(req);
722 /* Skip last_xid processing for the recovery thread, otherwise, the
723 * last_xid on same request could be processed twice: first time when
724 * processing the incoming request, second time when the request is
725 * being processed by recovery thread. */
726 obd = class_exp2obd(req->rq_export);
728 /* reset the exp_last_xid on each connection. */
729 req->rq_export->exp_last_xid = 0;
730 } else if (obd->obd_recovery_data.trd_processing_task !=
732 rc = process_req_last_xid(req);
735 rc = ptlrpc_error(req);
740 request_fail_id = tgt->lut_request_fail_id;
741 tsi->tsi_reply_fail_id = tgt->lut_reply_fail_id;
743 h = tgt_handler_find_check(req);
745 req->rq_status = PTR_ERR(h);
746 rc = ptlrpc_error(req);
750 LASSERTF(h->th_opc == opc, "opcode mismatch %d != %d\n",
753 if (CFS_FAIL_CHECK_ORSET(request_fail_id, CFS_FAIL_ONCE))
756 rc = lustre_msg_check_version(msg, h->th_version);
758 DEBUG_REQ(D_ERROR, req, "%s: drop mal-formed request, version"
759 " %08x, expecting %08x\n", tgt_name(tgt),
760 lustre_msg_get_version(msg), h->th_version);
761 req->rq_status = -EINVAL;
762 rc = ptlrpc_error(req);
767 rc = tgt_handle_recovery(req, tsi->tsi_reply_fail_id);
768 if (likely(rc == 1)) {
769 rc = tgt_handle_request0(tsi, h, req);
775 req_capsule_fini(tsi->tsi_pill);
776 if (tsi->tsi_corpus != NULL) {
777 lu_object_put(tsi->tsi_env, tsi->tsi_corpus);
778 tsi->tsi_corpus = NULL;
782 EXPORT_SYMBOL(tgt_request_handle);
784 /** Assign high priority operations to the request if needed. */
785 int tgt_hpreq_handler(struct ptlrpc_request *req)
787 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
788 struct tgt_handler *h;
793 if (req->rq_export == NULL)
796 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
797 tsi->tsi_pill = &req->rq_pill;
798 tsi->tsi_env = req->rq_svc_thread->t_env;
799 tsi->tsi_tgt = class_exp2tgt(req->rq_export);
800 tsi->tsi_exp = req->rq_export;
802 h = tgt_handler_find_check(req);
808 rc = tgt_request_preprocess(tsi, h, req);
809 if (unlikely(rc != 0))
812 if (h->th_hp != NULL)
816 EXPORT_SYMBOL(tgt_hpreq_handler);
818 void tgt_counter_incr(struct obd_export *exp, int opcode)
820 lprocfs_counter_incr(exp->exp_obd->obd_stats, opcode);
821 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_stats != NULL)
822 lprocfs_counter_incr(exp->exp_nid_stats->nid_stats, opcode);
824 EXPORT_SYMBOL(tgt_counter_incr);
827 * Unified target generic handlers.
833 static inline void tgt_init_sec_none(struct obd_connect_data *reply)
835 reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |
836 OBD_CONNECT_RMT_CLIENT_FORCE);
839 static int tgt_init_sec_level(struct ptlrpc_request *req)
841 struct lu_target *tgt = class_exp2tgt(req->rq_export);
843 struct obd_connect_data *data, *reply;
848 data = req_capsule_client_get(&req->rq_pill, &RMF_CONNECT_DATA);
849 reply = req_capsule_server_get(&req->rq_pill, &RMF_CONNECT_DATA);
850 if (data == NULL || reply == NULL)
853 /* connection from MDT is always trusted */
854 if (req->rq_auth_usr_mdt) {
855 tgt_init_sec_none(reply);
859 if (unlikely(tgt == NULL)) {
860 DEBUG_REQ(D_ERROR, req, "%s: No target for connected export\n",
861 class_exp2obd(req->rq_export)->obd_name);
865 client = libcfs_nid2str(req->rq_peer.nid);
866 /* no GSS support case */
867 if (!req->rq_auth_gss) {
868 if (tgt->lut_sec_level > LUSTRE_SEC_NONE) {
869 CWARN("client %s -> target %s does not use GSS, "
870 "can not run under security level %d.\n",
871 client, tgt_name(tgt), tgt->lut_sec_level);
874 tgt_init_sec_none(reply);
879 /* old version case */
880 if (unlikely(!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) ||
881 !(data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) ||
882 !(data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA))) {
883 if (tgt->lut_sec_level > LUSTRE_SEC_NONE) {
884 CWARN("client %s -> target %s uses old version, "
885 "can not run under security level %d.\n",
886 client, tgt_name(tgt), tgt->lut_sec_level);
889 CWARN("client %s -> target %s uses old version, "
890 "run under security level %d.\n",
891 client, tgt_name(tgt), tgt->lut_sec_level);
892 tgt_init_sec_none(reply);
897 remote = data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT_FORCE;
899 if (!req->rq_auth_remote)
900 CDEBUG(D_SEC, "client (local realm) %s -> target %s "
901 "asked to be remote.\n", client, tgt_name(tgt));
902 } else if (req->rq_auth_remote) {
904 CDEBUG(D_SEC, "client (remote realm) %s -> target %s is set "
905 "as remote by default.\n", client, tgt_name(tgt));
909 if (!uid_valid(make_kuid(&init_user_ns, req->rq_auth_uid))) {
910 CDEBUG(D_SEC, "client %s -> target %s: user is not "
911 "authenticated!\n", client, tgt_name(tgt));
917 switch (tgt->lut_sec_level) {
918 case LUSTRE_SEC_NONE:
921 "client %s -> target %s is set as remote, "
922 "can not run under security level %d.\n",
923 client, tgt_name(tgt), tgt->lut_sec_level);
926 tgt_init_sec_none(reply);
928 case LUSTRE_SEC_REMOTE:
930 tgt_init_sec_none(reply);
935 reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |
936 OBD_CONNECT_RMT_CLIENT_FORCE);
937 reply->ocd_connect_flags &= ~OBD_CONNECT_OSS_CAPA;
938 reply->ocd_connect_flags &= ~OBD_CONNECT_MDS_CAPA;
947 int tgt_connect_check_sptlrpc(struct ptlrpc_request *req, struct obd_export *exp)
949 struct lu_target *tgt = class_exp2tgt(exp);
950 struct sptlrpc_flavor flvr;
954 LASSERT(tgt->lut_obd);
955 LASSERT(tgt->lut_slice);
957 /* always allow ECHO client */
958 if (unlikely(strcmp(exp->exp_obd->obd_type->typ_name,
959 LUSTRE_ECHO_NAME) == 0)) {
960 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
964 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
965 read_lock(&tgt->lut_sptlrpc_lock);
966 sptlrpc_target_choose_flavor(&tgt->lut_sptlrpc_rset,
970 read_unlock(&tgt->lut_sptlrpc_lock);
972 spin_lock(&exp->exp_lock);
973 exp->exp_sp_peer = req->rq_sp_from;
974 exp->exp_flvr = flvr;
976 /* when on mgs, if no restriction is set, or if client
977 * is loopback, allow any flavor */
978 if ((strcmp(exp->exp_obd->obd_type->typ_name,
979 LUSTRE_MGS_NAME) == 0) &&
980 (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_NULL ||
981 LNET_NETTYP(LNET_NIDNET(exp->exp_connection->c_peer.nid))
983 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
985 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
986 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
987 CERROR("%s: unauthorized rpc flavor %x from %s, "
988 "expect %x\n", tgt_name(tgt),
990 libcfs_nid2str(req->rq_peer.nid),
991 exp->exp_flvr.sf_rpc);
994 spin_unlock(&exp->exp_lock);
996 if (exp->exp_sp_peer != req->rq_sp_from) {
997 CERROR("%s: RPC source %s doesn't match %s\n",
999 sptlrpc_part2name(req->rq_sp_from),
1000 sptlrpc_part2name(exp->exp_sp_peer));
1003 rc = sptlrpc_target_export_check(exp, req);
1010 int tgt_adapt_sptlrpc_conf(struct lu_target *tgt, int initial)
1012 struct sptlrpc_rule_set tmp_rset;
1015 if (unlikely(tgt == NULL)) {
1016 CERROR("No target passed");
1020 sptlrpc_rule_set_init(&tmp_rset);
1021 rc = sptlrpc_conf_target_get_rules(tgt->lut_obd, &tmp_rset, initial);
1023 CERROR("%s: failed get sptlrpc rules: rc = %d\n",
1028 sptlrpc_target_update_exp_flavor(tgt->lut_obd, &tmp_rset);
1030 write_lock(&tgt->lut_sptlrpc_lock);
1031 sptlrpc_rule_set_free(&tgt->lut_sptlrpc_rset);
1032 tgt->lut_sptlrpc_rset = tmp_rset;
1033 write_unlock(&tgt->lut_sptlrpc_lock);
1037 EXPORT_SYMBOL(tgt_adapt_sptlrpc_conf);
1039 int tgt_connect(struct tgt_session_info *tsi)
1041 struct ptlrpc_request *req = tgt_ses_req(tsi);
1042 struct obd_connect_data *reply;
1047 rc = tgt_init_sec_level(req);
1051 /* XXX: better to call this check right after getting new export but
1052 * before last_rcvd slot allocation to avoid server load upon insecure
1053 * connects. This is to be fixed after unifiyng all targets.
1055 rc = tgt_connect_check_sptlrpc(req, tsi->tsi_exp);
1059 /* To avoid exposing partially initialized connection flags, changes up
1060 * to this point have been staged in reply->ocd_connect_flags. Now that
1061 * connection handling has completed successfully, atomically update
1062 * the connect flags in the shared export data structure. LU-1623 */
1063 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_CONNECT_DATA);
1064 spin_lock(&tsi->tsi_exp->exp_lock);
1065 *exp_connect_flags_ptr(tsi->tsi_exp) = reply->ocd_connect_flags;
1066 tsi->tsi_exp->exp_connect_data.ocd_brw_size = reply->ocd_brw_size;
1067 spin_unlock(&tsi->tsi_exp->exp_lock);
1071 obd_disconnect(class_export_get(tsi->tsi_exp));
1074 EXPORT_SYMBOL(tgt_connect);
1076 int tgt_disconnect(struct tgt_session_info *tsi)
1082 rc = target_handle_disconnect(tgt_ses_req(tsi));
1084 RETURN(err_serious(rc));
1088 EXPORT_SYMBOL(tgt_disconnect);
1091 * Unified target OBD handlers
1093 int tgt_obd_ping(struct tgt_session_info *tsi)
1099 rc = target_handle_ping(tgt_ses_req(tsi));
1101 RETURN(err_serious(rc));
1105 EXPORT_SYMBOL(tgt_obd_ping);
1107 int tgt_obd_log_cancel(struct tgt_session_info *tsi)
1109 return err_serious(-EOPNOTSUPP);
1112 int tgt_send_buffer(struct tgt_session_info *tsi, struct lu_rdbuf *rdbuf)
1114 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1115 struct ptlrpc_request *req = tgt_ses_req(tsi);
1116 struct obd_export *exp = req->rq_export;
1117 struct ptlrpc_bulk_desc *desc;
1118 struct l_wait_info *lwi = &tti->tti_u.update.tti_wait_info;
1124 desc = ptlrpc_prep_bulk_exp(req, rdbuf->rb_nbufs, 1,
1125 PTLRPC_BULK_PUT_SOURCE | PTLRPC_BULK_BUF_KVEC,
1126 MDS_BULK_PORTAL, &ptlrpc_bulk_kvec_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, lwi);
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 tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1144 struct ptlrpc_request *req = tgt_ses_req(tsi);
1145 struct obd_export *exp = req->rq_export;
1146 struct ptlrpc_bulk_desc *desc;
1147 struct l_wait_info *lwi = &tti->tti_u.rdpg.tti_wait_info;
1155 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, 1,
1156 PTLRPC_BULK_PUT_SOURCE |
1157 PTLRPC_BULK_BUF_KIOV,
1159 &ptlrpc_bulk_kiov_pin_ops);
1163 if (!(exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE))
1164 /* old client requires reply size in it's PAGE_CACHE_SIZE,
1165 * which is rdpg->rp_count */
1166 nob = rdpg->rp_count;
1168 for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
1169 i++, tmpcount -= tmpsize) {
1170 tmpsize = min_t(int, tmpcount, PAGE_CACHE_SIZE);
1171 desc->bd_frag_ops->add_kiov_frag(desc, rdpg->rp_pages[i], 0,
1175 LASSERT(desc->bd_nob == nob);
1176 rc = target_bulk_io(exp, desc, lwi);
1177 ptlrpc_free_bulk(desc);
1180 EXPORT_SYMBOL(tgt_sendpage);
1183 * OBD_IDX_READ handler
1185 static int tgt_obd_idx_read(struct tgt_session_info *tsi)
1187 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1188 struct lu_rdpg *rdpg = &tti->tti_u.rdpg.tti_rdpg;
1189 struct idx_info *req_ii, *rep_ii;
1194 memset(rdpg, 0, sizeof(*rdpg));
1195 req_capsule_set(tsi->tsi_pill, &RQF_OBD_IDX_READ);
1197 /* extract idx_info buffer from request & reply */
1198 req_ii = req_capsule_client_get(tsi->tsi_pill, &RMF_IDX_INFO);
1199 if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
1200 RETURN(err_serious(-EPROTO));
1202 rc = req_capsule_server_pack(tsi->tsi_pill);
1204 RETURN(err_serious(rc));
1206 rep_ii = req_capsule_server_get(tsi->tsi_pill, &RMF_IDX_INFO);
1208 RETURN(err_serious(-EFAULT));
1209 rep_ii->ii_magic = IDX_INFO_MAGIC;
1211 /* extract hash to start with */
1212 rdpg->rp_hash = req_ii->ii_hash_start;
1214 /* extract requested attributes */
1215 rdpg->rp_attrs = req_ii->ii_attrs;
1217 /* check that fid packed in request is valid and supported */
1218 if (!fid_is_sane(&req_ii->ii_fid))
1220 rep_ii->ii_fid = req_ii->ii_fid;
1223 rep_ii->ii_flags = req_ii->ii_flags;
1225 /* compute number of pages to allocate, ii_count is the number of 4KB
1227 if (req_ii->ii_count <= 0)
1228 GOTO(out, rc = -EFAULT);
1229 rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
1230 exp_max_brw_size(tsi->tsi_exp));
1231 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE -1) >> PAGE_CACHE_SHIFT;
1233 /* allocate pages to store the containers */
1234 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
1235 if (rdpg->rp_pages == NULL)
1236 GOTO(out, rc = -ENOMEM);
1237 for (i = 0; i < rdpg->rp_npages; i++) {
1238 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1239 if (rdpg->rp_pages[i] == NULL)
1240 GOTO(out, rc = -ENOMEM);
1243 /* populate pages with key/record pairs */
1244 rc = dt_index_read(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, rep_ii, rdpg);
1248 LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
1249 "asked %d > %d\n", rc, rdpg->rp_count);
1251 /* send pages to client */
1252 rc = tgt_sendpage(tsi, rdpg, rc);
1257 if (rdpg->rp_pages) {
1258 for (i = 0; i < rdpg->rp_npages; i++)
1259 if (rdpg->rp_pages[i])
1260 __free_page(rdpg->rp_pages[i]);
1261 OBD_FREE(rdpg->rp_pages,
1262 rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
1267 struct tgt_handler tgt_obd_handlers[] = {
1268 TGT_OBD_HDL (0, OBD_PING, tgt_obd_ping),
1269 TGT_OBD_HDL_VAR(0, OBD_LOG_CANCEL, tgt_obd_log_cancel),
1270 TGT_OBD_HDL (0, OBD_IDX_READ, tgt_obd_idx_read)
1272 EXPORT_SYMBOL(tgt_obd_handlers);
1274 int tgt_sync(const struct lu_env *env, struct lu_target *tgt,
1275 struct dt_object *obj, __u64 start, __u64 end)
1281 /* if no objid is specified, it means "sync whole filesystem" */
1283 rc = dt_sync(env, tgt->lut_bottom);
1284 } else if (dt_version_get(env, obj) >
1285 tgt->lut_obd->obd_last_committed) {
1286 rc = dt_object_sync(env, obj, start, end);
1288 atomic_inc(&tgt->lut_sync_count);
1292 EXPORT_SYMBOL(tgt_sync);
1294 * Unified target DLM handlers.
1298 * Unified target BAST
1300 * Ensure data and metadata are synced to disk when lock is canceled if Sync on
1301 * Cancel (SOC) is enabled. If it's extent lock, normally sync obj is enough,
1302 * but if it's cross-MDT lock, because remote object version is not set, a
1303 * filesystem sync is needed.
1305 * \param lock server side lock
1306 * \param desc lock desc
1307 * \param data ldlm_cb_set_arg
1308 * \param flag indicates whether this cancelling or blocking callback
1309 * \retval 0 on success
1310 * \retval negative number on error
1312 static int tgt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1313 void *data, int flag)
1316 struct lu_target *tgt;
1317 struct dt_object *obj = NULL;
1323 tgt = class_exp2tgt(lock->l_export);
1325 if (unlikely(tgt == NULL)) {
1326 CDEBUG(D_ERROR, "%s: No target for connected export\n",
1327 class_exp2obd(lock->l_export)->obd_name);
1331 if (flag == LDLM_CB_CANCELING &&
1332 (lock->l_granted_mode & (LCK_EX | LCK_PW | LCK_GROUP)) &&
1333 (tgt->lut_sync_lock_cancel == ALWAYS_SYNC_ON_CANCEL ||
1334 (tgt->lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL &&
1335 ldlm_is_cbpending(lock))) &&
1336 ((exp_connect_flags(lock->l_export) & OBD_CONNECT_MDS_MDS) ||
1337 lock->l_resource->lr_type == LDLM_EXTENT)) {
1339 __u64 end = OBD_OBJECT_EOF;
1341 rc = lu_env_init(&env, LCT_DT_THREAD);
1342 if (unlikely(rc != 0))
1345 ost_fid_from_resid(&fid, &lock->l_resource->lr_name,
1346 tgt->lut_lsd.lsd_osd_index);
1348 if (lock->l_resource->lr_type == LDLM_EXTENT) {
1349 obj = dt_locate(&env, tgt->lut_bottom, &fid);
1351 GOTO(err_env, rc = PTR_ERR(obj));
1353 if (!dt_object_exists(obj))
1354 GOTO(err_put, rc = -ENOENT);
1356 start = lock->l_policy_data.l_extent.start;
1357 end = lock->l_policy_data.l_extent.end;
1360 rc = tgt_sync(&env, tgt, obj, start, end);
1362 CERROR("%s: syncing "DFID" ("LPU64"-"LPU64") on lock "
1363 "cancel: rc = %d\n",
1364 tgt_name(tgt), PFID(&fid),
1365 lock->l_policy_data.l_extent.start,
1366 lock->l_policy_data.l_extent.end, rc);
1370 lu_object_put(&env, &obj->do_lu);
1375 rc = ldlm_server_blocking_ast(lock, desc, data, flag);
1379 static struct ldlm_callback_suite tgt_dlm_cbs = {
1380 .lcs_completion = ldlm_server_completion_ast,
1381 .lcs_blocking = tgt_blocking_ast,
1382 .lcs_glimpse = ldlm_server_glimpse_ast
1385 int tgt_enqueue(struct tgt_session_info *tsi)
1387 struct ptlrpc_request *req = tgt_ses_req(tsi);
1392 * tsi->tsi_dlm_req was already swapped and (if necessary) converted,
1393 * tsi->tsi_dlm_cbs was set by the *_req_handle() function.
1395 LASSERT(tsi->tsi_dlm_req != NULL);
1396 rc = ldlm_handle_enqueue0(tsi->tsi_exp->exp_obd->obd_namespace, req,
1397 tsi->tsi_dlm_req, &tgt_dlm_cbs);
1399 RETURN(err_serious(rc));
1401 switch (LUT_FAIL_CLASS(tsi->tsi_reply_fail_id)) {
1403 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_LDLM_REPLY_NET;
1406 tsi->tsi_reply_fail_id = OBD_FAIL_OST_LDLM_REPLY_NET;
1409 tsi->tsi_reply_fail_id = OBD_FAIL_MGS_LDLM_REPLY_NET;
1412 tsi->tsi_reply_fail_id = OBD_FAIL_LDLM_REPLY;
1415 RETURN(req->rq_status);
1417 EXPORT_SYMBOL(tgt_enqueue);
1419 int tgt_convert(struct tgt_session_info *tsi)
1421 struct ptlrpc_request *req = tgt_ses_req(tsi);
1425 LASSERT(tsi->tsi_dlm_req);
1426 rc = ldlm_handle_convert0(req, tsi->tsi_dlm_req);
1428 RETURN(err_serious(rc));
1430 RETURN(req->rq_status);
1433 int tgt_bl_callback(struct tgt_session_info *tsi)
1435 return err_serious(-EOPNOTSUPP);
1438 int tgt_cp_callback(struct tgt_session_info *tsi)
1440 return err_serious(-EOPNOTSUPP);
1443 /* generic LDLM target handler */
1444 struct tgt_handler tgt_dlm_handlers[] = {
1445 TGT_DLM_HDL (HABEO_CLAVIS, LDLM_ENQUEUE, tgt_enqueue),
1446 TGT_DLM_HDL_VAR(HABEO_CLAVIS, LDLM_CONVERT, tgt_convert),
1447 TGT_DLM_HDL_VAR(0, LDLM_BL_CALLBACK, tgt_bl_callback),
1448 TGT_DLM_HDL_VAR(0, LDLM_CP_CALLBACK, tgt_cp_callback)
1450 EXPORT_SYMBOL(tgt_dlm_handlers);
1453 * Unified target LLOG handlers.
1455 int tgt_llog_open(struct tgt_session_info *tsi)
1461 rc = llog_origin_handle_open(tgt_ses_req(tsi));
1465 EXPORT_SYMBOL(tgt_llog_open);
1467 int tgt_llog_close(struct tgt_session_info *tsi)
1473 rc = llog_origin_handle_close(tgt_ses_req(tsi));
1477 EXPORT_SYMBOL(tgt_llog_close);
1480 int tgt_llog_destroy(struct tgt_session_info *tsi)
1486 rc = llog_origin_handle_destroy(tgt_ses_req(tsi));
1491 int tgt_llog_read_header(struct tgt_session_info *tsi)
1497 rc = llog_origin_handle_read_header(tgt_ses_req(tsi));
1501 EXPORT_SYMBOL(tgt_llog_read_header);
1503 int tgt_llog_next_block(struct tgt_session_info *tsi)
1509 rc = llog_origin_handle_next_block(tgt_ses_req(tsi));
1513 EXPORT_SYMBOL(tgt_llog_next_block);
1515 int tgt_llog_prev_block(struct tgt_session_info *tsi)
1521 rc = llog_origin_handle_prev_block(tgt_ses_req(tsi));
1525 EXPORT_SYMBOL(tgt_llog_prev_block);
1527 /* generic llog target handler */
1528 struct tgt_handler tgt_llog_handlers[] = {
1529 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, tgt_llog_open),
1530 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
1531 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
1532 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
1533 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_DESTROY, tgt_llog_destroy),
1534 TGT_LLOG_HDL_VAR(0, LLOG_ORIGIN_HANDLE_CLOSE, tgt_llog_close),
1536 EXPORT_SYMBOL(tgt_llog_handlers);
1539 * sec context handlers
1541 /* XXX: Implement based on mdt_sec_ctx_handle()? */
1542 static int tgt_sec_ctx_handle(struct tgt_session_info *tsi)
1547 struct tgt_handler tgt_sec_ctx_handlers[] = {
1548 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, tgt_sec_ctx_handle),
1549 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT, tgt_sec_ctx_handle),
1550 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, tgt_sec_ctx_handle),
1552 EXPORT_SYMBOL(tgt_sec_ctx_handlers);
1554 int (*tgt_lfsck_in_notify)(const struct lu_env *env,
1555 struct dt_device *key,
1556 struct lfsck_request *lr,
1557 struct thandle *th) = NULL;
1559 void tgt_register_lfsck_in_notify(int (*notify)(const struct lu_env *,
1561 struct lfsck_request *,
1564 tgt_lfsck_in_notify = notify;
1566 EXPORT_SYMBOL(tgt_register_lfsck_in_notify);
1568 static int (*tgt_lfsck_query)(const struct lu_env *env,
1569 struct dt_device *key,
1570 struct lfsck_request *req,
1571 struct lfsck_reply *rep,
1572 struct lfsck_query *que) = NULL;
1574 void tgt_register_lfsck_query(int (*query)(const struct lu_env *,
1576 struct lfsck_request *,
1577 struct lfsck_reply *,
1578 struct lfsck_query *))
1580 tgt_lfsck_query = query;
1582 EXPORT_SYMBOL(tgt_register_lfsck_query);
1584 /* LFSCK request handlers */
1585 static int tgt_handle_lfsck_notify(struct tgt_session_info *tsi)
1587 const struct lu_env *env = tsi->tsi_env;
1588 struct dt_device *key = tsi->tsi_tgt->lut_bottom;
1589 struct lfsck_request *lr;
1593 lr = req_capsule_client_get(tsi->tsi_pill, &RMF_LFSCK_REQUEST);
1597 rc = tgt_lfsck_in_notify(env, key, lr, NULL);
1602 static int tgt_handle_lfsck_query(struct tgt_session_info *tsi)
1604 struct lfsck_request *request;
1605 struct lfsck_reply *reply;
1609 request = req_capsule_client_get(tsi->tsi_pill, &RMF_LFSCK_REQUEST);
1610 if (request == NULL)
1613 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_LFSCK_REPLY);
1617 rc = tgt_lfsck_query(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
1618 request, reply, NULL);
1620 RETURN(rc < 0 ? rc : 0);
1623 struct tgt_handler tgt_lfsck_handlers[] = {
1624 TGT_LFSCK_HDL(HABEO_REFERO, LFSCK_NOTIFY, tgt_handle_lfsck_notify),
1625 TGT_LFSCK_HDL(HABEO_REFERO, LFSCK_QUERY, tgt_handle_lfsck_query),
1627 EXPORT_SYMBOL(tgt_lfsck_handlers);
1630 * initialize per-thread page pool (bug 5137).
1632 int tgt_io_thread_init(struct ptlrpc_thread *thread)
1634 struct tgt_thread_big_cache *tbc;
1638 LASSERT(thread != NULL);
1639 LASSERT(thread->t_data == NULL);
1641 OBD_ALLOC_LARGE(tbc, sizeof(*tbc));
1644 thread->t_data = tbc;
1647 EXPORT_SYMBOL(tgt_io_thread_init);
1650 * free per-thread pool created by tgt_thread_init().
1652 void tgt_io_thread_done(struct ptlrpc_thread *thread)
1654 struct tgt_thread_big_cache *tbc;
1658 LASSERT(thread != NULL);
1661 * be prepared to handle partially-initialized pools (because this is
1662 * called from ost_io_thread_init() for cleanup.
1664 tbc = thread->t_data;
1666 OBD_FREE_LARGE(tbc, sizeof(*tbc));
1667 thread->t_data = NULL;
1671 EXPORT_SYMBOL(tgt_io_thread_done);
1673 * Helper function for getting server side [start, start+count] DLM lock
1674 * if asked by client.
1676 int tgt_extent_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1677 __u64 start, __u64 end, struct lustre_handle *lh,
1678 int mode, __u64 *flags)
1680 union ldlm_policy_data policy;
1685 LASSERT(lh != NULL);
1686 LASSERT(ns != NULL);
1687 LASSERT(!lustre_handle_is_used(lh));
1689 policy.l_extent.gid = 0;
1690 policy.l_extent.start = start & PAGE_MASK;
1693 * If ->o_blocks is EOF it means "lock till the end of the file".
1694 * Otherwise, it's size of an extent or hole being punched (in bytes).
1696 if (end == OBD_OBJECT_EOF || end < start)
1697 policy.l_extent.end = OBD_OBJECT_EOF;
1699 policy.l_extent.end = end | ~PAGE_MASK;
1701 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_EXTENT, &policy, mode,
1702 flags, ldlm_blocking_ast,
1703 ldlm_completion_ast, ldlm_glimpse_ast,
1704 NULL, 0, LVB_T_NONE, NULL, lh);
1705 RETURN(rc == ELDLM_OK ? 0 : -EIO);
1707 EXPORT_SYMBOL(tgt_extent_lock);
1709 void tgt_extent_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1711 LASSERT(lustre_handle_is_used(lh));
1712 ldlm_lock_decref(lh, mode);
1714 EXPORT_SYMBOL(tgt_extent_unlock);
1716 int tgt_brw_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1717 struct obd_ioobj *obj, struct niobuf_remote *nb,
1718 struct lustre_handle *lh, enum ldlm_mode mode)
1721 int nrbufs = obj->ioo_bufcnt;
1726 LASSERT(mode == LCK_PR || mode == LCK_PW);
1727 LASSERT(!lustre_handle_is_used(lh));
1729 if (nrbufs == 0 || !(nb[0].rnb_flags & OBD_BRW_SRVLOCK))
1732 for (i = 1; i < nrbufs; i++)
1733 if (!(nb[i].rnb_flags & OBD_BRW_SRVLOCK))
1736 RETURN(tgt_extent_lock(ns, res_id, nb[0].rnb_offset,
1737 nb[nrbufs - 1].rnb_offset +
1738 nb[nrbufs - 1].rnb_len - 1,
1742 void tgt_brw_unlock(struct obd_ioobj *obj, struct niobuf_remote *niob,
1743 struct lustre_handle *lh, enum ldlm_mode mode)
1747 LASSERT(mode == LCK_PR || mode == LCK_PW);
1748 LASSERT((obj->ioo_bufcnt > 0 &&
1749 (niob[0].rnb_flags & OBD_BRW_SRVLOCK)) ==
1750 lustre_handle_is_used(lh));
1752 if (lustre_handle_is_used(lh))
1753 tgt_extent_unlock(lh, mode);
1757 static __u32 tgt_checksum_bulk(struct lu_target *tgt,
1758 struct ptlrpc_bulk_desc *desc, int opc,
1759 cksum_type_t cksum_type)
1761 struct cfs_crypto_hash_desc *hdesc;
1762 unsigned int bufsize;
1764 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1767 LASSERT(ptlrpc_is_bulk_desc_kiov(desc->bd_type));
1769 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1770 if (IS_ERR(hdesc)) {
1771 CERROR("%s: unable to initialize checksum hash %s\n",
1772 tgt_name(tgt), cfs_crypto_hash_name(cfs_alg));
1773 return PTR_ERR(hdesc);
1776 CDEBUG(D_INFO, "Checksum for algo %s\n", cfs_crypto_hash_name(cfs_alg));
1777 for (i = 0; i < desc->bd_iov_count; i++) {
1778 /* corrupt the data before we compute the checksum, to
1779 * simulate a client->OST data error */
1780 if (i == 0 && opc == OST_WRITE &&
1781 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) {
1782 int off = BD_GET_KIOV(desc, i).kiov_offset &
1784 int len = BD_GET_KIOV(desc, i).kiov_len;
1785 struct page *np = tgt_page_to_corrupt;
1786 char *ptr = kmap(BD_GET_KIOV(desc, i).kiov_page) + off;
1789 char *ptr2 = kmap(np) + off;
1791 memcpy(ptr2, ptr, len);
1792 memcpy(ptr2, "bad3", min(4, len));
1794 BD_GET_KIOV(desc, i).kiov_page = np;
1796 CERROR("%s: can't alloc page for corruption\n",
1800 cfs_crypto_hash_update_page(hdesc,
1801 BD_GET_KIOV(desc, i).kiov_page,
1802 BD_GET_KIOV(desc, i).kiov_offset &
1804 BD_GET_KIOV(desc, i).kiov_len);
1806 /* corrupt the data after we compute the checksum, to
1807 * simulate an OST->client data error */
1808 if (i == 0 && opc == OST_READ &&
1809 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND)) {
1810 int off = BD_GET_KIOV(desc, i).kiov_offset
1812 int len = BD_GET_KIOV(desc, i).kiov_len;
1813 struct page *np = tgt_page_to_corrupt;
1815 kmap(BD_GET_KIOV(desc, i).kiov_page) + off;
1818 char *ptr2 = kmap(np) + off;
1820 memcpy(ptr2, ptr, len);
1821 memcpy(ptr2, "bad4", min(4, len));
1823 BD_GET_KIOV(desc, i).kiov_page = np;
1825 CERROR("%s: can't alloc page for corruption\n",
1831 bufsize = sizeof(cksum);
1832 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1837 int tgt_brw_read(struct tgt_session_info *tsi)
1839 struct ptlrpc_request *req = tgt_ses_req(tsi);
1840 struct ptlrpc_bulk_desc *desc = NULL;
1841 struct obd_export *exp = tsi->tsi_exp;
1842 struct niobuf_remote *remote_nb;
1843 struct niobuf_local *local_nb;
1844 struct obd_ioobj *ioo;
1845 struct ost_body *body, *repbody;
1846 struct l_wait_info lwi;
1847 struct lustre_handle lockh = { 0 };
1848 int npages, nob = 0, rc, i, no_reply = 0;
1849 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
1853 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
1854 CERROR("%s: deny read request from %s to portal %u\n",
1855 tgt_name(tsi->tsi_tgt),
1856 obd_export_nid2str(req->rq_export),
1857 ptlrpc_req2svc(req)->srv_req_portal);
1861 req->rq_bulk_read = 1;
1863 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
1866 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
1867 cfs_fail_val : (obd_timeout + 1) / 4);
1869 /* Check if there is eviction in progress, and if so, wait for it to
1871 if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
1872 /* We do not care how long it takes */
1873 lwi = LWI_INTR(NULL, NULL);
1874 rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
1875 !atomic_read(&exp->exp_obd->obd_evict_inprogress),
1879 /* There must be big cache in current thread to process this request
1880 * if it is NULL then something went wrong and it wasn't allocated,
1881 * report -ENOMEM in that case */
1885 body = tsi->tsi_ost_body;
1886 LASSERT(body != NULL);
1888 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
1889 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
1891 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
1892 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
1894 local_nb = tbc->local;
1896 rc = tgt_brw_lock(exp->exp_obd->obd_namespace, &tsi->tsi_resid, ioo,
1897 remote_nb, &lockh, LCK_PR);
1902 * If getting the lock took more time than
1903 * client was willing to wait, drop it. b=11330
1905 if (cfs_time_current_sec() > req->rq_deadline ||
1906 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
1908 CERROR("Dropping timed-out read from %s because locking"
1909 "object "DOSTID" took %ld seconds (limit was %ld).\n",
1910 libcfs_id2str(req->rq_peer), POSTID(&ioo->ioo_oid),
1911 cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
1912 req->rq_deadline - req->rq_arrival_time.tv_sec);
1913 GOTO(out_lock, rc = -ETIMEDOUT);
1916 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1917 repbody->oa = body->oa;
1919 npages = PTLRPC_MAX_BRW_PAGES;
1920 rc = obd_preprw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1,
1921 ioo, remote_nb, &npages, local_nb);
1925 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
1926 PTLRPC_BULK_PUT_SOURCE |
1927 PTLRPC_BULK_BUF_KIOV,
1929 &ptlrpc_bulk_kiov_nopin_ops);
1931 GOTO(out_commitrw, rc = -ENOMEM);
1934 for (i = 0; i < npages; i++) {
1935 int page_rc = local_nb[i].lnb_rc;
1943 if (page_rc != 0) { /* some data! */
1944 LASSERT(local_nb[i].lnb_page != NULL);
1945 desc->bd_frag_ops->add_kiov_frag
1946 (desc, local_nb[i].lnb_page,
1947 local_nb[i].lnb_page_offset,
1951 if (page_rc != local_nb[i].lnb_len) { /* short read */
1952 /* All subsequent pages should be 0 */
1953 while (++i < npages)
1954 LASSERT(local_nb[i].lnb_rc == 0);
1958 if (OBD_FAIL_CHECK(OBD_FAIL_OST_READ_SIZE) &&
1959 nob != cfs_fail_val)
1962 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1963 cksum_type_t cksum_type =
1964 cksum_type_unpack(body->oa.o_valid & OBD_MD_FLFLAGS ?
1965 body->oa.o_flags : 0);
1966 repbody->oa.o_flags = cksum_type_pack(cksum_type);
1967 repbody->oa.o_valid = OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1968 repbody->oa.o_cksum = tgt_checksum_bulk(tsi->tsi_tgt, desc,
1969 OST_READ, cksum_type);
1970 CDEBUG(D_PAGE, "checksum at read origin: %x\n",
1971 repbody->oa.o_cksum);
1973 repbody->oa.o_valid = 0;
1975 /* We're finishing using body->oa as an input variable */
1977 /* Check if client was evicted while we were doing i/o before touching
1979 if (likely(rc == 0 &&
1980 !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
1981 rc = target_bulk_io(exp, desc, &lwi);
1986 /* Must commit after prep above in all cases */
1987 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1, ioo,
1988 remote_nb, npages, local_nb, rc);
1990 tgt_drop_id(exp, &repbody->oa);
1992 tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PR);
1994 if (desc && !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))
1995 ptlrpc_free_bulk(desc);
2000 ptlrpc_lprocfs_brw(req, nob);
2001 } else if (no_reply) {
2002 req->rq_no_reply = 1;
2003 /* reply out callback would free */
2004 ptlrpc_req_drop_rs(req);
2005 LCONSOLE_WARN("%s: Bulk IO read error with %s (at %s), "
2006 "client will retry: rc %d\n",
2007 exp->exp_obd->obd_name,
2008 obd_uuid2str(&exp->exp_client_uuid),
2009 obd_export_nid2str(exp), rc);
2011 /* send a bulk after reply to simulate a network delay or reordering
2013 if (unlikely(CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
2014 wait_queue_head_t waitq;
2015 struct l_wait_info lwi1;
2017 CDEBUG(D_INFO, "reorder BULK\n");
2018 init_waitqueue_head(&waitq);
2020 lwi1 = LWI_TIMEOUT_INTR(cfs_time_seconds(3), NULL, NULL, NULL);
2021 l_wait_event(waitq, 0, &lwi1);
2022 target_bulk_io(exp, desc, &lwi);
2023 ptlrpc_free_bulk(desc);
2028 EXPORT_SYMBOL(tgt_brw_read);
2030 static void tgt_warn_on_cksum(struct ptlrpc_request *req,
2031 struct ptlrpc_bulk_desc *desc,
2032 struct niobuf_local *local_nb, int npages,
2033 u32 client_cksum, u32 server_cksum,
2036 struct obd_export *exp = req->rq_export;
2037 struct ost_body *body;
2041 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
2042 LASSERT(body != NULL);
2044 if (req->rq_peer.nid != desc->bd_sender) {
2046 router = libcfs_nid2str(desc->bd_sender);
2050 CDEBUG_LIMIT(D_INFO, "client csum %x, server csum %x\n",
2051 client_cksum, server_cksum);
2055 LCONSOLE_ERROR_MSG(0x168, "BAD WRITE CHECKSUM: %s from %s%s%s inode "
2056 DFID" object "DOSTID" extent ["LPU64"-"LPU64
2057 "]: client csum %x, server csum %x\n",
2058 exp->exp_obd->obd_name, libcfs_id2str(req->rq_peer),
2060 body->oa.o_valid & OBD_MD_FLFID ?
2061 body->oa.o_parent_seq : (__u64)0,
2062 body->oa.o_valid & OBD_MD_FLFID ?
2063 body->oa.o_parent_oid : 0,
2064 body->oa.o_valid & OBD_MD_FLFID ?
2065 body->oa.o_parent_ver : 0,
2066 POSTID(&body->oa.o_oi),
2067 local_nb[0].lnb_file_offset,
2068 local_nb[npages-1].lnb_file_offset +
2069 local_nb[npages - 1].lnb_len - 1,
2070 client_cksum, server_cksum);
2073 int tgt_brw_write(struct tgt_session_info *tsi)
2075 struct ptlrpc_request *req = tgt_ses_req(tsi);
2076 struct ptlrpc_bulk_desc *desc = NULL;
2077 struct obd_export *exp = req->rq_export;
2078 struct niobuf_remote *remote_nb;
2079 struct niobuf_local *local_nb;
2080 struct obd_ioobj *ioo;
2081 struct ost_body *body, *repbody;
2082 struct l_wait_info lwi;
2083 struct lustre_handle lockh = {0};
2085 int objcount, niocount, npages;
2087 cksum_type_t cksum_type = OBD_CKSUM_CRC32;
2088 bool no_reply = false, mmap;
2089 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
2093 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
2094 CERROR("%s: deny write request from %s to portal %u\n",
2095 tgt_name(tsi->tsi_tgt),
2096 obd_export_nid2str(req->rq_export),
2097 ptlrpc_req2svc(req)->srv_req_portal);
2098 RETURN(err_serious(-EPROTO));
2101 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC))
2102 RETURN(err_serious(-ENOSPC));
2103 if (OBD_FAIL_TIMEOUT(OBD_FAIL_OST_EROFS, 1))
2104 RETURN(err_serious(-EROFS));
2106 req->rq_bulk_write = 1;
2108 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
2109 RETURN(err_serious(-EIO));
2110 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK2))
2111 RETURN(err_serious(-EFAULT));
2113 /* pause before transaction has been started */
2114 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
2115 cfs_fail_val : (obd_timeout + 1) / 4);
2117 /* There must be big cache in current thread to process this request
2118 * if it is NULL then something went wrong and it wasn't allocated,
2119 * report -ENOMEM in that case */
2123 body = tsi->tsi_ost_body;
2124 LASSERT(body != NULL);
2126 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2127 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
2129 objcount = req_capsule_get_size(&req->rq_pill, &RMF_OBD_IOOBJ,
2130 RCL_CLIENT) / sizeof(*ioo);
2132 for (niocount = i = 0; i < objcount; i++)
2133 niocount += ioo[i].ioo_bufcnt;
2135 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2136 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
2137 if (niocount != req_capsule_get_size(&req->rq_pill,
2138 &RMF_NIOBUF_REMOTE, RCL_CLIENT) /
2140 RETURN(err_serious(-EPROTO));
2142 if ((remote_nb[0].rnb_flags & OBD_BRW_MEMALLOC) &&
2143 (exp->exp_connection->c_peer.nid == exp->exp_connection->c_self))
2144 memory_pressure_set();
2146 req_capsule_set_size(&req->rq_pill, &RMF_RCS, RCL_SERVER,
2147 niocount * sizeof(*rcs));
2148 rc = req_capsule_server_pack(&req->rq_pill);
2150 GOTO(out, rc = err_serious(rc));
2152 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_PACK, cfs_fail_val);
2153 rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
2155 local_nb = tbc->local;
2157 rc = tgt_brw_lock(exp->exp_obd->obd_namespace, &tsi->tsi_resid, ioo,
2158 remote_nb, &lockh, LCK_PW);
2163 * If getting the lock took more time than
2164 * client was willing to wait, drop it. b=11330
2166 if (cfs_time_current_sec() > req->rq_deadline ||
2167 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
2169 CERROR("%s: Dropping timed-out write from %s because locking "
2170 "object "DOSTID" took %ld seconds (limit was %ld).\n",
2171 tgt_name(tsi->tsi_tgt), libcfs_id2str(req->rq_peer),
2172 POSTID(&ioo->ioo_oid),
2173 cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
2174 req->rq_deadline - req->rq_arrival_time.tv_sec);
2175 GOTO(out_lock, rc = -ETIMEDOUT);
2178 /* Because we already sync grant info with client when reconnect,
2179 * grant info will be cleared for resent req, then fed_grant and
2180 * total_grant will not be modified in following preprw_write */
2181 if (lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) {
2182 DEBUG_REQ(D_CACHE, req, "clear resent/replay req grant info");
2183 body->oa.o_valid &= ~OBD_MD_FLGRANT;
2186 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2187 if (repbody == NULL)
2188 GOTO(out_lock, rc = -ENOMEM);
2189 repbody->oa = body->oa;
2191 npages = PTLRPC_MAX_BRW_PAGES;
2192 rc = obd_preprw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
2193 objcount, ioo, remote_nb, &npages, local_nb);
2197 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
2198 PTLRPC_BULK_GET_SINK | PTLRPC_BULK_BUF_KIOV,
2200 &ptlrpc_bulk_kiov_nopin_ops);
2202 GOTO(skip_transfer, rc = -ENOMEM);
2204 /* NB Having prepped, we must commit... */
2205 for (i = 0; i < npages; i++)
2206 desc->bd_frag_ops->add_kiov_frag(desc,
2207 local_nb[i].lnb_page,
2208 local_nb[i].lnb_page_offset,
2209 local_nb[i].lnb_len);
2211 rc = sptlrpc_svc_prep_bulk(req, desc);
2213 GOTO(skip_transfer, rc);
2215 rc = target_bulk_io(exp, desc, &lwi);
2219 if (body->oa.o_valid & OBD_MD_FLCKSUM && rc == 0) {
2220 static int cksum_counter;
2222 if (body->oa.o_valid & OBD_MD_FLFLAGS)
2223 cksum_type = cksum_type_unpack(body->oa.o_flags);
2225 repbody->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
2226 repbody->oa.o_flags &= ~OBD_FL_CKSUM_ALL;
2227 repbody->oa.o_flags |= cksum_type_pack(cksum_type);
2228 repbody->oa.o_cksum = tgt_checksum_bulk(tsi->tsi_tgt, desc,
2229 OST_WRITE, cksum_type);
2232 if (unlikely(body->oa.o_cksum != repbody->oa.o_cksum)) {
2233 mmap = (body->oa.o_valid & OBD_MD_FLFLAGS &&
2234 body->oa.o_flags & OBD_FL_MMAP);
2236 tgt_warn_on_cksum(req, desc, local_nb, npages,
2238 repbody->oa.o_cksum, mmap);
2240 } else if ((cksum_counter & (-cksum_counter)) ==
2242 CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n",
2243 cksum_counter, libcfs_id2str(req->rq_peer),
2244 repbody->oa.o_cksum);
2248 /* Must commit after prep above in all cases */
2249 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
2250 objcount, ioo, remote_nb, npages, local_nb, rc);
2251 if (rc == -ENOTCONN)
2252 /* quota acquire process has been given up because
2253 * either the client has been evicted or the client
2254 * has timed out the request already */
2258 * Disable sending mtime back to the client. If the client locked the
2259 * whole object, then it has already updated the mtime on its side,
2260 * otherwise it will have to glimpse anyway (see bug 21489, comment 32)
2262 repbody->oa.o_valid &= ~(OBD_MD_FLMTIME | OBD_MD_FLATIME);
2267 /* set per-requested niobuf return codes */
2268 for (i = j = 0; i < niocount; i++) {
2269 int len = remote_nb[i].rnb_len;
2274 LASSERT(j < npages);
2275 if (local_nb[j].lnb_rc < 0)
2276 rcs[i] = local_nb[j].lnb_rc;
2277 len -= local_nb[j].lnb_len;
2282 LASSERT(j == npages);
2283 ptlrpc_lprocfs_brw(req, nob);
2285 tgt_drop_id(exp, &repbody->oa);
2288 tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PW);
2290 ptlrpc_free_bulk(desc);
2293 req->rq_no_reply = 1;
2294 /* reply out callback would free */
2295 ptlrpc_req_drop_rs(req);
2296 LCONSOLE_WARN("%s: Bulk IO write error with %s (at %s), "
2297 "client will retry: rc %d\n",
2298 exp->exp_obd->obd_name,
2299 obd_uuid2str(&exp->exp_client_uuid),
2300 obd_export_nid2str(exp), rc);
2302 memory_pressure_clr();
2305 EXPORT_SYMBOL(tgt_brw_write);
2307 /* Check if request can be reconstructed from saved reply data
2308 * A copy of the reply data is returned in @trd if the pointer is not NULL
2310 bool req_can_reconstruct(struct ptlrpc_request *req,
2311 struct tg_reply_data *trd)
2313 struct tg_export_data *ted = &req->rq_export->exp_target_data;
2314 struct lsd_client_data *lcd = ted->ted_lcd;
2317 if (tgt_is_multimodrpcs_client(req->rq_export))
2318 return tgt_lookup_reply(req, trd);
2320 mutex_lock(&ted->ted_lcd_lock);
2321 found = req->rq_xid == lcd->lcd_last_xid ||
2322 req->rq_xid == lcd->lcd_last_close_xid;
2324 if (found && trd != NULL) {
2325 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
2326 trd->trd_reply.lrd_xid = lcd->lcd_last_close_xid;
2327 trd->trd_reply.lrd_transno =
2328 lcd->lcd_last_close_transno;
2329 trd->trd_reply.lrd_result = lcd->lcd_last_close_result;
2331 trd->trd_reply.lrd_xid = lcd->lcd_last_xid;
2332 trd->trd_reply.lrd_transno = lcd->lcd_last_transno;
2333 trd->trd_reply.lrd_result = lcd->lcd_last_result;
2334 trd->trd_reply.lrd_data = lcd->lcd_last_data;
2335 trd->trd_pre_versions[0] = lcd->lcd_pre_versions[0];
2336 trd->trd_pre_versions[1] = lcd->lcd_pre_versions[1];
2337 trd->trd_pre_versions[2] = lcd->lcd_pre_versions[2];
2338 trd->trd_pre_versions[3] = lcd->lcd_pre_versions[3];
2341 mutex_unlock(&ted->ted_lcd_lock);
2345 EXPORT_SYMBOL(req_can_reconstruct);