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 = 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 & HABEO_CORPUS) {
281 CERROR("%s: OBD_MD_FLID flag is not set in ost_body "
282 "but OID/FID is mandatory with HABEO_CORPUS\n",
283 tgt_name(tsi->tsi_tgt));
290 ost_fid_build_resid(&tsi->tsi_fid, &tsi->tsi_resid);
293 * OST doesn't get object in advance for further use to prevent
294 * situations with nested object_find which is potential deadlock.
296 tsi->tsi_corpus = NULL;
301 * Do necessary preprocessing according to handler ->th_flags.
303 static int tgt_request_preprocess(struct tgt_session_info *tsi,
304 struct tgt_handler *h,
305 struct ptlrpc_request *req)
307 struct req_capsule *pill = tsi->tsi_pill;
308 __u32 flags = h->th_flags;
313 if (tsi->tsi_preprocessed)
316 LASSERT(h->th_act != NULL);
317 LASSERT(h->th_opc == lustre_msg_get_opc(req->rq_reqmsg));
318 LASSERT(current->journal_info == NULL);
320 LASSERT(ergo(flags & (HABEO_CORPUS | HABEO_REFERO),
322 if (h->th_fmt != NULL) {
323 req_capsule_set(pill, h->th_fmt);
324 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT)) {
325 rc = tgt_mdt_body_unpack(tsi, flags);
328 } else if (req_capsule_has_field(pill, &RMF_OST_BODY,
330 rc = tgt_ost_body_unpack(tsi, flags);
336 if (flags & MUTABOR && tgt_conn_flags(tsi) & OBD_CONNECT_RDONLY)
339 if (flags & HABEO_CLAVIS) {
340 struct ldlm_request *dlm_req;
342 LASSERT(h->th_fmt != NULL);
344 dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
345 if (dlm_req != NULL) {
346 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
348 dlm_req->lock_desc.l_policy_data.\
349 l_inodebits.bits == 0)) {
351 * Lock without inodebits makes no sense and
352 * will oops later in ldlm. If client miss to
353 * set such bits, do not trigger ASSERTION.
355 * For liblustre flock case, it maybe zero.
359 tsi->tsi_dlm_req = dlm_req;
365 tsi->tsi_preprocessed = 1;
370 * Invoke handler for this request opc. Also do necessary preprocessing
371 * (according to handler ->th_flags), and post-processing (setting of
372 * ->last_{xid,committed}).
374 static int tgt_handle_request0(struct tgt_session_info *tsi,
375 struct tgt_handler *h,
376 struct ptlrpc_request *req)
380 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
385 /* When dealing with sec context requests, no export is associated yet,
386 * because these requests are sent before *_CONNECT requests.
387 * A NULL req->rq_export means the normal *_common_slice handlers will
388 * not be called, because there is no reference to the target.
389 * So deal with them by hand and jump directly to target_send_reply().
393 case SEC_CTX_INIT_CONT:
395 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
400 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
401 * to put same checks into handlers like mdt_close(), mdt_reint(),
402 * etc., without talking to mdt authors first. Checking same thing
403 * there again is useless and returning 0 error without packing reply
404 * is buggy! Handlers either pack reply or return error.
406 * We return 0 here and do not send any reply in order to emulate
407 * network failure. Do not send any reply in case any of NET related
408 * fail_id has occured.
410 if (OBD_FAIL_CHECK_ORSET(h->th_fail_id, OBD_FAIL_ONCE))
412 if (unlikely(lustre_msg_get_opc(req->rq_reqmsg) == MDS_REINT &&
413 OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_MULTI_NET)))
416 rc = tgt_request_preprocess(tsi, h, req);
417 /* pack reply if reply format is fixed */
418 if (rc == 0 && h->th_flags & HABEO_REFERO) {
420 if (req_capsule_has_field(tsi->tsi_pill, &RMF_MDT_MD,
422 req_capsule_set_size(tsi->tsi_pill, &RMF_MDT_MD,
424 tsi->tsi_mdt_body->mbo_eadatasize);
425 if (req_capsule_has_field(tsi->tsi_pill, &RMF_LOGCOOKIES,
427 req_capsule_set_size(tsi->tsi_pill, &RMF_LOGCOOKIES,
430 rc = req_capsule_server_pack(tsi->tsi_pill);
433 if (likely(rc == 0)) {
435 * Process request, there can be two types of rc:
436 * 1) errors with msg unpack/pack, other failures outside the
437 * operation itself. This is counted as serious errors;
438 * 2) errors during fs operation, should be placed in rq_status
442 if (!is_serious(rc) &&
443 !req->rq_no_reply && req->rq_reply_state == NULL) {
444 DEBUG_REQ(D_ERROR, req, "%s \"handler\" %s did not "
445 "pack reply and returned 0 error\n",
446 tgt_name(tsi->tsi_tgt), h->th_name);
449 serious = is_serious(rc);
450 rc = clear_serious(rc);
458 * ELDLM_* codes which > 0 should be in rq_status only as well as
459 * all non-serious errors.
461 if (rc > 0 || !serious)
464 LASSERT(current->journal_info == NULL);
466 if (likely(rc == 0 && req->rq_export))
467 target_committed_to_req(req);
470 target_send_reply(req, rc, tsi->tsi_reply_fail_id);
474 static int tgt_filter_recovery_request(struct ptlrpc_request *req,
475 struct obd_device *obd, int *process)
477 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
484 case MDS_SYNC: /* used in unmounting */
498 case MDS_HSM_PROGRESS:
499 case MDS_HSM_STATE_SET:
500 case MDS_HSM_REQUEST:
501 *process = target_queue_recovery_request(req, obd);
505 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
512 * Handle recovery. Return:
513 * +1: continue request processing;
514 * -ve: abort immediately with the given error code;
515 * 0: send reply with error code in req->rq_status;
517 static int tgt_handle_recovery(struct ptlrpc_request *req, int reply_fail_id)
521 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
526 case SEC_CTX_INIT_CONT:
531 if (!req->rq_export->exp_obd->obd_replayable)
534 /* sanity check: if the xid matches, the request must be marked as a
535 * resent or replayed */
536 if (req_can_reconstruct(req, NULL)) {
537 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
538 (MSG_RESENT | MSG_REPLAY))) {
539 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches "
540 "saved xid, expected REPLAY or RESENT flag "
542 lustre_msg_get_flags(req->rq_reqmsg));
543 req->rq_status = -ENOTCONN;
547 /* else: note the opposite is not always true; a RESENT req after a
548 * failover will usually not match the last_xid, since it was likely
549 * never committed. A REPLAYed request will almost never match the
550 * last xid, however it could for a committed, but still retained,
553 /* Check for aborted recovery... */
554 if (unlikely(req->rq_export->exp_obd->obd_recovering)) {
558 DEBUG_REQ(D_INFO, req, "Got new replay");
559 rc = tgt_filter_recovery_request(req, req->rq_export->exp_obd,
561 if (rc != 0 || !should_process)
563 else if (should_process < 0) {
564 req->rq_status = should_process;
565 rc = ptlrpc_error(req);
572 /* Initial check for request, it is validation mostly */
573 static struct tgt_handler *tgt_handler_find_check(struct ptlrpc_request *req)
575 struct tgt_handler *h;
576 struct tgt_opc_slice *s;
577 struct lu_target *tgt;
578 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
582 tgt = class_exp2tgt(req->rq_export);
583 if (unlikely(tgt == NULL)) {
584 DEBUG_REQ(D_ERROR, req, "%s: No target for connected export\n",
585 class_exp2obd(req->rq_export)->obd_name);
586 RETURN(ERR_PTR(-EINVAL));
589 for (s = tgt->lut_slice; s->tos_hs != NULL; s++)
590 if (s->tos_opc_start <= opc && opc < s->tos_opc_end)
593 /* opcode was not found in slice */
594 if (unlikely(s->tos_hs == NULL)) {
595 CERROR("%s: no handlers for opcode 0x%x\n", tgt_name(tgt),
597 RETURN(ERR_PTR(-ENOTSUPP));
600 LASSERT(opc >= s->tos_opc_start && opc < s->tos_opc_end);
601 h = s->tos_hs + (opc - s->tos_opc_start);
602 if (unlikely(h->th_opc == 0)) {
603 CERROR("%s: unsupported opcode 0x%x\n", tgt_name(tgt), opc);
604 RETURN(ERR_PTR(-ENOTSUPP));
610 static int process_req_last_xid(struct ptlrpc_request *req)
615 /* check request's xid is consistent with export's last_xid */
616 last_xid = lustre_msg_get_last_xid(req->rq_reqmsg);
617 if (last_xid > req->rq_export->exp_last_xid)
618 req->rq_export->exp_last_xid = last_xid;
620 if (req->rq_xid == 0 ||
621 (req->rq_xid <= req->rq_export->exp_last_xid)) {
622 DEBUG_REQ(D_ERROR, req, "Unexpected xid %llx vs. "
623 "last_xid %llx\n", req->rq_xid,
624 req->rq_export->exp_last_xid);
625 /* Some request is allowed to be sent during replay,
626 * such as OUT update requests, FLD requests, so it
627 * is possible that replay requests has smaller XID
628 * than the exp_last_xid.
630 * Some non-replay requests may have smaller XID as
633 * - Client send a no_resend RPC, like statfs;
634 * - The RPC timedout (or some other error) on client,
635 * then it's removed from the unreplied list;
636 * - Client send some other request to bump the
637 * exp_last_xid on server;
638 * - The former RPC got chance to be processed;
640 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
644 /* try to release in-memory reply data */
645 if (tgt_is_multimodrpcs_client(req->rq_export)) {
646 tgt_handle_received_xid(req->rq_export,
647 lustre_msg_get_last_xid(req->rq_reqmsg));
648 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
649 (MSG_RESENT | MSG_REPLAY)))
650 tgt_handle_tag(req->rq_export,
651 lustre_msg_get_tag(req->rq_reqmsg));
656 int tgt_request_handle(struct ptlrpc_request *req)
658 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
660 struct lustre_msg *msg = req->rq_reqmsg;
661 struct tgt_handler *h;
662 struct lu_target *tgt;
663 int request_fail_id = 0;
664 __u32 opc = lustre_msg_get_opc(msg);
665 struct obd_device *obd;
667 bool is_connect = false;
670 /* Refill the context, to make sure all thread keys are allocated */
671 lu_env_refill(req->rq_svc_thread->t_env);
673 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
674 tsi->tsi_pill = &req->rq_pill;
675 tsi->tsi_env = req->rq_svc_thread->t_env;
677 /* if request has export then get handlers slice from corresponding
678 * target, otherwise that should be connect operation */
679 if (opc == MDS_CONNECT || opc == OST_CONNECT ||
680 opc == MGS_CONNECT) {
682 req_capsule_set(&req->rq_pill, &RQF_CONNECT);
683 rc = target_handle_connect(req);
685 rc = ptlrpc_error(req);
688 /* recovery-small test 18c asks to drop connect reply */
689 if (unlikely(opc == OST_CONNECT &&
690 OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET2)))
694 if (unlikely(!class_connected_export(req->rq_export))) {
695 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT ||
696 opc == SEC_CTX_FINI) {
697 /* sec context initialization has to be handled
698 * by hand in tgt_handle_request0() */
699 tsi->tsi_reply_fail_id = OBD_FAIL_SEC_CTX_INIT_NET;
701 GOTO(handle_recov, rc = 0);
703 CDEBUG(D_HA, "operation %d on unconnected OST from %s\n",
704 opc, libcfs_id2str(req->rq_peer));
705 req->rq_status = -ENOTCONN;
706 rc = ptlrpc_error(req);
710 tsi->tsi_tgt = tgt = class_exp2tgt(req->rq_export);
711 tsi->tsi_exp = req->rq_export;
712 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_JOBSTATS)
713 tsi->tsi_jobid = lustre_msg_get_jobid(req->rq_reqmsg);
715 tsi->tsi_jobid = NULL;
718 DEBUG_REQ(D_ERROR, req, "%s: No target for connected export\n",
719 class_exp2obd(req->rq_export)->obd_name);
720 req->rq_status = -EINVAL;
721 rc = ptlrpc_error(req);
725 /* Skip last_xid processing for the recovery thread, otherwise, the
726 * last_xid on same request could be processed twice: first time when
727 * processing the incoming request, second time when the request is
728 * being processed by recovery thread. */
729 obd = class_exp2obd(req->rq_export);
731 /* reset the exp_last_xid on each connection. */
732 req->rq_export->exp_last_xid = 0;
733 } else if (obd->obd_recovery_data.trd_processing_task !=
735 rc = process_req_last_xid(req);
738 rc = ptlrpc_error(req);
743 request_fail_id = tgt->lut_request_fail_id;
744 tsi->tsi_reply_fail_id = tgt->lut_reply_fail_id;
746 h = tgt_handler_find_check(req);
748 req->rq_status = PTR_ERR(h);
749 rc = ptlrpc_error(req);
753 LASSERTF(h->th_opc == opc, "opcode mismatch %d != %d\n",
756 if (CFS_FAIL_CHECK_ORSET(request_fail_id, CFS_FAIL_ONCE))
759 rc = lustre_msg_check_version(msg, h->th_version);
761 DEBUG_REQ(D_ERROR, req, "%s: drop mal-formed request, version"
762 " %08x, expecting %08x\n", tgt_name(tgt),
763 lustre_msg_get_version(msg), h->th_version);
764 req->rq_status = -EINVAL;
765 rc = ptlrpc_error(req);
770 rc = tgt_handle_recovery(req, tsi->tsi_reply_fail_id);
771 if (likely(rc == 1)) {
772 rc = tgt_handle_request0(tsi, h, req);
778 req_capsule_fini(tsi->tsi_pill);
779 if (tsi->tsi_corpus != NULL) {
780 lu_object_put(tsi->tsi_env, tsi->tsi_corpus);
781 tsi->tsi_corpus = NULL;
785 EXPORT_SYMBOL(tgt_request_handle);
787 /** Assign high priority operations to the request if needed. */
788 int tgt_hpreq_handler(struct ptlrpc_request *req)
790 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
791 struct tgt_handler *h;
796 if (req->rq_export == NULL)
799 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
800 tsi->tsi_pill = &req->rq_pill;
801 tsi->tsi_env = req->rq_svc_thread->t_env;
802 tsi->tsi_tgt = class_exp2tgt(req->rq_export);
803 tsi->tsi_exp = req->rq_export;
805 h = tgt_handler_find_check(req);
811 rc = tgt_request_preprocess(tsi, h, req);
812 if (unlikely(rc != 0))
815 if (h->th_hp != NULL)
819 EXPORT_SYMBOL(tgt_hpreq_handler);
821 void tgt_counter_incr(struct obd_export *exp, int opcode)
823 lprocfs_counter_incr(exp->exp_obd->obd_stats, opcode);
824 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_stats != NULL)
825 lprocfs_counter_incr(exp->exp_nid_stats->nid_stats, opcode);
827 EXPORT_SYMBOL(tgt_counter_incr);
830 * Unified target generic handlers.
836 static inline void tgt_init_sec_none(struct obd_connect_data *reply)
838 reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |
839 OBD_CONNECT_RMT_CLIENT_FORCE);
842 static int tgt_init_sec_level(struct ptlrpc_request *req)
844 struct lu_target *tgt = class_exp2tgt(req->rq_export);
846 struct obd_connect_data *data, *reply;
851 data = req_capsule_client_get(&req->rq_pill, &RMF_CONNECT_DATA);
852 reply = req_capsule_server_get(&req->rq_pill, &RMF_CONNECT_DATA);
853 if (data == NULL || reply == NULL)
856 /* connection from MDT is always trusted */
857 if (req->rq_auth_usr_mdt) {
858 tgt_init_sec_none(reply);
862 if (unlikely(tgt == NULL)) {
863 DEBUG_REQ(D_ERROR, req, "%s: No target for connected export\n",
864 class_exp2obd(req->rq_export)->obd_name);
868 client = libcfs_nid2str(req->rq_peer.nid);
869 /* no GSS support case */
870 if (!req->rq_auth_gss) {
871 if (tgt->lut_sec_level > LUSTRE_SEC_NONE) {
872 CWARN("client %s -> target %s does not use GSS, "
873 "can not run under security level %d.\n",
874 client, tgt_name(tgt), tgt->lut_sec_level);
877 tgt_init_sec_none(reply);
882 /* old version case */
883 if (unlikely(!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) ||
884 !(data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) ||
885 !(data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA))) {
886 if (tgt->lut_sec_level > LUSTRE_SEC_NONE) {
887 CWARN("client %s -> target %s uses old version, "
888 "can not run under security level %d.\n",
889 client, tgt_name(tgt), tgt->lut_sec_level);
892 CWARN("client %s -> target %s uses old version, "
893 "run under security level %d.\n",
894 client, tgt_name(tgt), tgt->lut_sec_level);
895 tgt_init_sec_none(reply);
900 remote = data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT_FORCE;
902 if (!req->rq_auth_remote)
903 CDEBUG(D_SEC, "client (local realm) %s -> target %s "
904 "asked to be remote.\n", client, tgt_name(tgt));
905 } else if (req->rq_auth_remote) {
907 CDEBUG(D_SEC, "client (remote realm) %s -> target %s is set "
908 "as remote by default.\n", client, tgt_name(tgt));
912 if (!uid_valid(make_kuid(&init_user_ns, req->rq_auth_uid))) {
913 CDEBUG(D_SEC, "client %s -> target %s: user is not "
914 "authenticated!\n", client, tgt_name(tgt));
920 switch (tgt->lut_sec_level) {
921 case LUSTRE_SEC_NONE:
924 "client %s -> target %s is set as remote, "
925 "can not run under security level %d.\n",
926 client, tgt_name(tgt), tgt->lut_sec_level);
929 tgt_init_sec_none(reply);
931 case LUSTRE_SEC_REMOTE:
933 tgt_init_sec_none(reply);
938 reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |
939 OBD_CONNECT_RMT_CLIENT_FORCE);
940 reply->ocd_connect_flags &= ~OBD_CONNECT_OSS_CAPA;
941 reply->ocd_connect_flags &= ~OBD_CONNECT_MDS_CAPA;
950 int tgt_connect_check_sptlrpc(struct ptlrpc_request *req, struct obd_export *exp)
952 struct lu_target *tgt = class_exp2tgt(exp);
953 struct sptlrpc_flavor flvr;
957 LASSERT(tgt->lut_obd);
958 LASSERT(tgt->lut_slice);
960 /* always allow ECHO client */
961 if (unlikely(strcmp(exp->exp_obd->obd_type->typ_name,
962 LUSTRE_ECHO_NAME) == 0)) {
963 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
967 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
968 read_lock(&tgt->lut_sptlrpc_lock);
969 sptlrpc_target_choose_flavor(&tgt->lut_sptlrpc_rset,
973 read_unlock(&tgt->lut_sptlrpc_lock);
975 spin_lock(&exp->exp_lock);
976 exp->exp_sp_peer = req->rq_sp_from;
977 exp->exp_flvr = flvr;
979 /* when on mgs, if no restriction is set, or if client
980 * is loopback, allow any flavor */
981 if ((strcmp(exp->exp_obd->obd_type->typ_name,
982 LUSTRE_MGS_NAME) == 0) &&
983 (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_NULL ||
984 LNET_NETTYP(LNET_NIDNET(exp->exp_connection->c_peer.nid))
986 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
988 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
989 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
990 CERROR("%s: unauthorized rpc flavor %x from %s, "
991 "expect %x\n", tgt_name(tgt),
993 libcfs_nid2str(req->rq_peer.nid),
994 exp->exp_flvr.sf_rpc);
997 spin_unlock(&exp->exp_lock);
999 if (exp->exp_sp_peer != req->rq_sp_from) {
1000 CERROR("%s: RPC source %s doesn't match %s\n",
1002 sptlrpc_part2name(req->rq_sp_from),
1003 sptlrpc_part2name(exp->exp_sp_peer));
1006 rc = sptlrpc_target_export_check(exp, req);
1013 int tgt_adapt_sptlrpc_conf(struct lu_target *tgt, int initial)
1015 struct sptlrpc_rule_set tmp_rset;
1018 if (unlikely(tgt == NULL)) {
1019 CERROR("No target passed");
1023 sptlrpc_rule_set_init(&tmp_rset);
1024 rc = sptlrpc_conf_target_get_rules(tgt->lut_obd, &tmp_rset, initial);
1026 CERROR("%s: failed get sptlrpc rules: rc = %d\n",
1031 sptlrpc_target_update_exp_flavor(tgt->lut_obd, &tmp_rset);
1033 write_lock(&tgt->lut_sptlrpc_lock);
1034 sptlrpc_rule_set_free(&tgt->lut_sptlrpc_rset);
1035 tgt->lut_sptlrpc_rset = tmp_rset;
1036 write_unlock(&tgt->lut_sptlrpc_lock);
1040 EXPORT_SYMBOL(tgt_adapt_sptlrpc_conf);
1042 int tgt_connect(struct tgt_session_info *tsi)
1044 struct ptlrpc_request *req = tgt_ses_req(tsi);
1045 struct obd_connect_data *reply;
1050 rc = tgt_init_sec_level(req);
1054 /* XXX: better to call this check right after getting new export but
1055 * before last_rcvd slot allocation to avoid server load upon insecure
1056 * connects. This is to be fixed after unifiyng all targets.
1058 rc = tgt_connect_check_sptlrpc(req, tsi->tsi_exp);
1062 /* To avoid exposing partially initialized connection flags, changes up
1063 * to this point have been staged in reply->ocd_connect_flags. Now that
1064 * connection handling has completed successfully, atomically update
1065 * the connect flags in the shared export data structure. LU-1623 */
1066 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_CONNECT_DATA);
1067 spin_lock(&tsi->tsi_exp->exp_lock);
1068 *exp_connect_flags_ptr(tsi->tsi_exp) = reply->ocd_connect_flags;
1069 tsi->tsi_exp->exp_connect_data.ocd_brw_size = reply->ocd_brw_size;
1070 spin_unlock(&tsi->tsi_exp->exp_lock);
1074 obd_disconnect(class_export_get(tsi->tsi_exp));
1077 EXPORT_SYMBOL(tgt_connect);
1079 int tgt_disconnect(struct tgt_session_info *tsi)
1085 rc = target_handle_disconnect(tgt_ses_req(tsi));
1087 RETURN(err_serious(rc));
1091 EXPORT_SYMBOL(tgt_disconnect);
1094 * Unified target OBD handlers
1096 int tgt_obd_ping(struct tgt_session_info *tsi)
1102 rc = target_handle_ping(tgt_ses_req(tsi));
1104 RETURN(err_serious(rc));
1108 EXPORT_SYMBOL(tgt_obd_ping);
1110 int tgt_obd_log_cancel(struct tgt_session_info *tsi)
1112 return err_serious(-EOPNOTSUPP);
1115 int tgt_send_buffer(struct tgt_session_info *tsi, struct lu_rdbuf *rdbuf)
1117 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1118 struct ptlrpc_request *req = tgt_ses_req(tsi);
1119 struct obd_export *exp = req->rq_export;
1120 struct ptlrpc_bulk_desc *desc;
1121 struct l_wait_info *lwi = &tti->tti_u.update.tti_wait_info;
1127 desc = ptlrpc_prep_bulk_exp(req, rdbuf->rb_nbufs, 1,
1128 PTLRPC_BULK_PUT_SOURCE | PTLRPC_BULK_BUF_KVEC,
1129 MDS_BULK_PORTAL, &ptlrpc_bulk_kvec_ops);
1133 for (i = 0; i < rdbuf->rb_nbufs; i++)
1134 desc->bd_frag_ops->add_iov_frag(desc,
1135 rdbuf->rb_bufs[i].lb_buf,
1136 rdbuf->rb_bufs[i].lb_len);
1138 rc = target_bulk_io(exp, desc, lwi);
1139 ptlrpc_free_bulk(desc);
1142 EXPORT_SYMBOL(tgt_send_buffer);
1144 int tgt_sendpage(struct tgt_session_info *tsi, struct lu_rdpg *rdpg, int nob)
1146 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1147 struct ptlrpc_request *req = tgt_ses_req(tsi);
1148 struct obd_export *exp = req->rq_export;
1149 struct ptlrpc_bulk_desc *desc;
1150 struct l_wait_info *lwi = &tti->tti_u.rdpg.tti_wait_info;
1158 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, 1,
1159 PTLRPC_BULK_PUT_SOURCE |
1160 PTLRPC_BULK_BUF_KIOV,
1162 &ptlrpc_bulk_kiov_pin_ops);
1166 if (!(exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE))
1167 /* old client requires reply size in it's PAGE_CACHE_SIZE,
1168 * which is rdpg->rp_count */
1169 nob = rdpg->rp_count;
1171 for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
1172 i++, tmpcount -= tmpsize) {
1173 tmpsize = min_t(int, tmpcount, PAGE_CACHE_SIZE);
1174 desc->bd_frag_ops->add_kiov_frag(desc, rdpg->rp_pages[i], 0,
1178 LASSERT(desc->bd_nob == nob);
1179 rc = target_bulk_io(exp, desc, lwi);
1180 ptlrpc_free_bulk(desc);
1183 EXPORT_SYMBOL(tgt_sendpage);
1186 * OBD_IDX_READ handler
1188 static int tgt_obd_idx_read(struct tgt_session_info *tsi)
1190 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1191 struct lu_rdpg *rdpg = &tti->tti_u.rdpg.tti_rdpg;
1192 struct idx_info *req_ii, *rep_ii;
1197 memset(rdpg, 0, sizeof(*rdpg));
1198 req_capsule_set(tsi->tsi_pill, &RQF_OBD_IDX_READ);
1200 /* extract idx_info buffer from request & reply */
1201 req_ii = req_capsule_client_get(tsi->tsi_pill, &RMF_IDX_INFO);
1202 if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
1203 RETURN(err_serious(-EPROTO));
1205 rc = req_capsule_server_pack(tsi->tsi_pill);
1207 RETURN(err_serious(rc));
1209 rep_ii = req_capsule_server_get(tsi->tsi_pill, &RMF_IDX_INFO);
1211 RETURN(err_serious(-EFAULT));
1212 rep_ii->ii_magic = IDX_INFO_MAGIC;
1214 /* extract hash to start with */
1215 rdpg->rp_hash = req_ii->ii_hash_start;
1217 /* extract requested attributes */
1218 rdpg->rp_attrs = req_ii->ii_attrs;
1220 /* check that fid packed in request is valid and supported */
1221 if (!fid_is_sane(&req_ii->ii_fid))
1223 rep_ii->ii_fid = req_ii->ii_fid;
1226 rep_ii->ii_flags = req_ii->ii_flags;
1228 /* compute number of pages to allocate, ii_count is the number of 4KB
1230 if (req_ii->ii_count <= 0)
1231 GOTO(out, rc = -EFAULT);
1232 rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
1233 exp_max_brw_size(tsi->tsi_exp));
1234 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE -1) >> PAGE_CACHE_SHIFT;
1236 /* allocate pages to store the containers */
1237 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
1238 if (rdpg->rp_pages == NULL)
1239 GOTO(out, rc = -ENOMEM);
1240 for (i = 0; i < rdpg->rp_npages; i++) {
1241 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1242 if (rdpg->rp_pages[i] == NULL)
1243 GOTO(out, rc = -ENOMEM);
1246 /* populate pages with key/record pairs */
1247 rc = dt_index_read(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, rep_ii, rdpg);
1251 LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
1252 "asked %d > %d\n", rc, rdpg->rp_count);
1254 /* send pages to client */
1255 rc = tgt_sendpage(tsi, rdpg, rc);
1260 if (rdpg->rp_pages) {
1261 for (i = 0; i < rdpg->rp_npages; i++)
1262 if (rdpg->rp_pages[i])
1263 __free_page(rdpg->rp_pages[i]);
1264 OBD_FREE(rdpg->rp_pages,
1265 rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
1270 struct tgt_handler tgt_obd_handlers[] = {
1271 TGT_OBD_HDL (0, OBD_PING, tgt_obd_ping),
1272 TGT_OBD_HDL_VAR(0, OBD_LOG_CANCEL, tgt_obd_log_cancel),
1273 TGT_OBD_HDL (0, OBD_IDX_READ, tgt_obd_idx_read)
1275 EXPORT_SYMBOL(tgt_obd_handlers);
1277 int tgt_sync(const struct lu_env *env, struct lu_target *tgt,
1278 struct dt_object *obj, __u64 start, __u64 end)
1284 /* if no objid is specified, it means "sync whole filesystem" */
1286 rc = dt_sync(env, tgt->lut_bottom);
1287 } else if (dt_version_get(env, obj) >
1288 tgt->lut_obd->obd_last_committed) {
1289 rc = dt_object_sync(env, obj, start, end);
1291 atomic_inc(&tgt->lut_sync_count);
1295 EXPORT_SYMBOL(tgt_sync);
1297 * Unified target DLM handlers.
1301 * Unified target BAST
1303 * Ensure data and metadata are synced to disk when lock is canceled if Sync on
1304 * Cancel (SOC) is enabled. If it's extent lock, normally sync obj is enough,
1305 * but if it's cross-MDT lock, because remote object version is not set, a
1306 * filesystem sync is needed.
1308 * \param lock server side lock
1309 * \param desc lock desc
1310 * \param data ldlm_cb_set_arg
1311 * \param flag indicates whether this cancelling or blocking callback
1312 * \retval 0 on success
1313 * \retval negative number on error
1315 static int tgt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1316 void *data, int flag)
1319 struct lu_target *tgt;
1320 struct dt_object *obj = NULL;
1326 tgt = class_exp2tgt(lock->l_export);
1328 if (unlikely(tgt == NULL)) {
1329 CDEBUG(D_ERROR, "%s: No target for connected export\n",
1330 class_exp2obd(lock->l_export)->obd_name);
1334 if (flag == LDLM_CB_CANCELING &&
1335 (lock->l_granted_mode & (LCK_EX | LCK_PW | LCK_GROUP)) &&
1336 (tgt->lut_sync_lock_cancel == ALWAYS_SYNC_ON_CANCEL ||
1337 (tgt->lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL &&
1338 ldlm_is_cbpending(lock))) &&
1339 ((exp_connect_flags(lock->l_export) & OBD_CONNECT_MDS_MDS) ||
1340 lock->l_resource->lr_type == LDLM_EXTENT)) {
1342 __u64 end = OBD_OBJECT_EOF;
1344 rc = lu_env_init(&env, LCT_DT_THREAD);
1345 if (unlikely(rc != 0))
1348 ost_fid_from_resid(&fid, &lock->l_resource->lr_name,
1349 tgt->lut_lsd.lsd_osd_index);
1351 if (lock->l_resource->lr_type == LDLM_EXTENT) {
1352 obj = dt_locate(&env, tgt->lut_bottom, &fid);
1354 GOTO(err_env, rc = PTR_ERR(obj));
1356 if (!dt_object_exists(obj))
1357 GOTO(err_put, rc = -ENOENT);
1359 start = lock->l_policy_data.l_extent.start;
1360 end = lock->l_policy_data.l_extent.end;
1363 rc = tgt_sync(&env, tgt, obj, start, end);
1365 CERROR("%s: syncing "DFID" ("LPU64"-"LPU64") on lock "
1366 "cancel: rc = %d\n",
1367 tgt_name(tgt), PFID(&fid),
1368 lock->l_policy_data.l_extent.start,
1369 lock->l_policy_data.l_extent.end, rc);
1373 lu_object_put(&env, &obj->do_lu);
1378 rc = ldlm_server_blocking_ast(lock, desc, data, flag);
1382 static struct ldlm_callback_suite tgt_dlm_cbs = {
1383 .lcs_completion = ldlm_server_completion_ast,
1384 .lcs_blocking = tgt_blocking_ast,
1385 .lcs_glimpse = ldlm_server_glimpse_ast
1388 int tgt_enqueue(struct tgt_session_info *tsi)
1390 struct ptlrpc_request *req = tgt_ses_req(tsi);
1395 * tsi->tsi_dlm_req was already swapped and (if necessary) converted,
1396 * tsi->tsi_dlm_cbs was set by the *_req_handle() function.
1398 LASSERT(tsi->tsi_dlm_req != NULL);
1399 rc = ldlm_handle_enqueue0(tsi->tsi_exp->exp_obd->obd_namespace, req,
1400 tsi->tsi_dlm_req, &tgt_dlm_cbs);
1402 RETURN(err_serious(rc));
1404 switch (LUT_FAIL_CLASS(tsi->tsi_reply_fail_id)) {
1406 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_LDLM_REPLY_NET;
1409 tsi->tsi_reply_fail_id = OBD_FAIL_OST_LDLM_REPLY_NET;
1412 tsi->tsi_reply_fail_id = OBD_FAIL_MGS_LDLM_REPLY_NET;
1415 tsi->tsi_reply_fail_id = OBD_FAIL_LDLM_REPLY;
1418 RETURN(req->rq_status);
1420 EXPORT_SYMBOL(tgt_enqueue);
1422 int tgt_convert(struct tgt_session_info *tsi)
1424 struct ptlrpc_request *req = tgt_ses_req(tsi);
1428 LASSERT(tsi->tsi_dlm_req);
1429 rc = ldlm_handle_convert0(req, tsi->tsi_dlm_req);
1431 RETURN(err_serious(rc));
1433 RETURN(req->rq_status);
1436 int tgt_bl_callback(struct tgt_session_info *tsi)
1438 return err_serious(-EOPNOTSUPP);
1441 int tgt_cp_callback(struct tgt_session_info *tsi)
1443 return err_serious(-EOPNOTSUPP);
1446 /* generic LDLM target handler */
1447 struct tgt_handler tgt_dlm_handlers[] = {
1448 TGT_DLM_HDL (HABEO_CLAVIS, LDLM_ENQUEUE, tgt_enqueue),
1449 TGT_DLM_HDL_VAR(HABEO_CLAVIS, LDLM_CONVERT, tgt_convert),
1450 TGT_DLM_HDL_VAR(0, LDLM_BL_CALLBACK, tgt_bl_callback),
1451 TGT_DLM_HDL_VAR(0, LDLM_CP_CALLBACK, tgt_cp_callback)
1453 EXPORT_SYMBOL(tgt_dlm_handlers);
1456 * Unified target LLOG handlers.
1458 int tgt_llog_open(struct tgt_session_info *tsi)
1464 rc = llog_origin_handle_open(tgt_ses_req(tsi));
1468 EXPORT_SYMBOL(tgt_llog_open);
1470 int tgt_llog_close(struct tgt_session_info *tsi)
1476 rc = llog_origin_handle_close(tgt_ses_req(tsi));
1480 EXPORT_SYMBOL(tgt_llog_close);
1483 int tgt_llog_destroy(struct tgt_session_info *tsi)
1489 rc = llog_origin_handle_destroy(tgt_ses_req(tsi));
1494 int tgt_llog_read_header(struct tgt_session_info *tsi)
1500 rc = llog_origin_handle_read_header(tgt_ses_req(tsi));
1504 EXPORT_SYMBOL(tgt_llog_read_header);
1506 int tgt_llog_next_block(struct tgt_session_info *tsi)
1512 rc = llog_origin_handle_next_block(tgt_ses_req(tsi));
1516 EXPORT_SYMBOL(tgt_llog_next_block);
1518 int tgt_llog_prev_block(struct tgt_session_info *tsi)
1524 rc = llog_origin_handle_prev_block(tgt_ses_req(tsi));
1528 EXPORT_SYMBOL(tgt_llog_prev_block);
1530 /* generic llog target handler */
1531 struct tgt_handler tgt_llog_handlers[] = {
1532 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, tgt_llog_open),
1533 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
1534 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
1535 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
1536 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_DESTROY, tgt_llog_destroy),
1537 TGT_LLOG_HDL_VAR(0, LLOG_ORIGIN_HANDLE_CLOSE, tgt_llog_close),
1539 EXPORT_SYMBOL(tgt_llog_handlers);
1542 * sec context handlers
1544 /* XXX: Implement based on mdt_sec_ctx_handle()? */
1545 static int tgt_sec_ctx_handle(struct tgt_session_info *tsi)
1550 struct tgt_handler tgt_sec_ctx_handlers[] = {
1551 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, tgt_sec_ctx_handle),
1552 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT, tgt_sec_ctx_handle),
1553 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, tgt_sec_ctx_handle),
1555 EXPORT_SYMBOL(tgt_sec_ctx_handlers);
1557 int (*tgt_lfsck_in_notify)(const struct lu_env *env,
1558 struct dt_device *key,
1559 struct lfsck_request *lr,
1560 struct thandle *th) = NULL;
1562 void tgt_register_lfsck_in_notify(int (*notify)(const struct lu_env *,
1564 struct lfsck_request *,
1567 tgt_lfsck_in_notify = notify;
1569 EXPORT_SYMBOL(tgt_register_lfsck_in_notify);
1571 static int (*tgt_lfsck_query)(const struct lu_env *env,
1572 struct dt_device *key,
1573 struct lfsck_request *req,
1574 struct lfsck_reply *rep,
1575 struct lfsck_query *que) = NULL;
1577 void tgt_register_lfsck_query(int (*query)(const struct lu_env *,
1579 struct lfsck_request *,
1580 struct lfsck_reply *,
1581 struct lfsck_query *))
1583 tgt_lfsck_query = query;
1585 EXPORT_SYMBOL(tgt_register_lfsck_query);
1587 /* LFSCK request handlers */
1588 static int tgt_handle_lfsck_notify(struct tgt_session_info *tsi)
1590 const struct lu_env *env = tsi->tsi_env;
1591 struct dt_device *key = tsi->tsi_tgt->lut_bottom;
1592 struct lfsck_request *lr;
1596 lr = req_capsule_client_get(tsi->tsi_pill, &RMF_LFSCK_REQUEST);
1600 rc = tgt_lfsck_in_notify(env, key, lr, NULL);
1605 static int tgt_handle_lfsck_query(struct tgt_session_info *tsi)
1607 struct lfsck_request *request;
1608 struct lfsck_reply *reply;
1612 request = req_capsule_client_get(tsi->tsi_pill, &RMF_LFSCK_REQUEST);
1613 if (request == NULL)
1616 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_LFSCK_REPLY);
1620 rc = tgt_lfsck_query(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
1621 request, reply, NULL);
1623 RETURN(rc < 0 ? rc : 0);
1626 struct tgt_handler tgt_lfsck_handlers[] = {
1627 TGT_LFSCK_HDL(HABEO_REFERO, LFSCK_NOTIFY, tgt_handle_lfsck_notify),
1628 TGT_LFSCK_HDL(HABEO_REFERO, LFSCK_QUERY, tgt_handle_lfsck_query),
1630 EXPORT_SYMBOL(tgt_lfsck_handlers);
1633 * initialize per-thread page pool (bug 5137).
1635 int tgt_io_thread_init(struct ptlrpc_thread *thread)
1637 struct tgt_thread_big_cache *tbc;
1641 LASSERT(thread != NULL);
1642 LASSERT(thread->t_data == NULL);
1644 OBD_ALLOC_LARGE(tbc, sizeof(*tbc));
1647 thread->t_data = tbc;
1650 EXPORT_SYMBOL(tgt_io_thread_init);
1653 * free per-thread pool created by tgt_thread_init().
1655 void tgt_io_thread_done(struct ptlrpc_thread *thread)
1657 struct tgt_thread_big_cache *tbc;
1661 LASSERT(thread != NULL);
1664 * be prepared to handle partially-initialized pools (because this is
1665 * called from ost_io_thread_init() for cleanup.
1667 tbc = thread->t_data;
1669 OBD_FREE_LARGE(tbc, sizeof(*tbc));
1670 thread->t_data = NULL;
1674 EXPORT_SYMBOL(tgt_io_thread_done);
1676 * Helper function for getting server side [start, start+count] DLM lock
1677 * if asked by client.
1679 int tgt_extent_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1680 __u64 start, __u64 end, struct lustre_handle *lh,
1681 int mode, __u64 *flags)
1683 union ldlm_policy_data policy;
1688 LASSERT(lh != NULL);
1689 LASSERT(ns != NULL);
1690 LASSERT(!lustre_handle_is_used(lh));
1692 policy.l_extent.gid = 0;
1693 policy.l_extent.start = start & PAGE_MASK;
1696 * If ->o_blocks is EOF it means "lock till the end of the file".
1697 * Otherwise, it's size of an extent or hole being punched (in bytes).
1699 if (end == OBD_OBJECT_EOF || end < start)
1700 policy.l_extent.end = OBD_OBJECT_EOF;
1702 policy.l_extent.end = end | ~PAGE_MASK;
1704 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_EXTENT, &policy, mode,
1705 flags, ldlm_blocking_ast,
1706 ldlm_completion_ast, ldlm_glimpse_ast,
1707 NULL, 0, LVB_T_NONE, NULL, lh);
1708 RETURN(rc == ELDLM_OK ? 0 : -EIO);
1710 EXPORT_SYMBOL(tgt_extent_lock);
1712 void tgt_extent_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1714 LASSERT(lustre_handle_is_used(lh));
1715 ldlm_lock_decref(lh, mode);
1717 EXPORT_SYMBOL(tgt_extent_unlock);
1719 int tgt_brw_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1720 struct obd_ioobj *obj, struct niobuf_remote *nb,
1721 struct lustre_handle *lh, enum ldlm_mode mode)
1724 int nrbufs = obj->ioo_bufcnt;
1729 LASSERT(mode == LCK_PR || mode == LCK_PW);
1730 LASSERT(!lustre_handle_is_used(lh));
1732 if (nrbufs == 0 || !(nb[0].rnb_flags & OBD_BRW_SRVLOCK))
1735 for (i = 1; i < nrbufs; i++)
1736 if (!(nb[i].rnb_flags & OBD_BRW_SRVLOCK))
1739 RETURN(tgt_extent_lock(ns, res_id, nb[0].rnb_offset,
1740 nb[nrbufs - 1].rnb_offset +
1741 nb[nrbufs - 1].rnb_len - 1,
1745 void tgt_brw_unlock(struct obd_ioobj *obj, struct niobuf_remote *niob,
1746 struct lustre_handle *lh, enum ldlm_mode mode)
1750 LASSERT(mode == LCK_PR || mode == LCK_PW);
1751 LASSERT((obj->ioo_bufcnt > 0 &&
1752 (niob[0].rnb_flags & OBD_BRW_SRVLOCK)) ==
1753 lustre_handle_is_used(lh));
1755 if (lustre_handle_is_used(lh))
1756 tgt_extent_unlock(lh, mode);
1760 static __u32 tgt_checksum_bulk(struct lu_target *tgt,
1761 struct ptlrpc_bulk_desc *desc, int opc,
1762 cksum_type_t cksum_type)
1764 struct cfs_crypto_hash_desc *hdesc;
1765 unsigned int bufsize;
1767 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1770 LASSERT(ptlrpc_is_bulk_desc_kiov(desc->bd_type));
1772 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1773 if (IS_ERR(hdesc)) {
1774 CERROR("%s: unable to initialize checksum hash %s\n",
1775 tgt_name(tgt), cfs_crypto_hash_name(cfs_alg));
1776 return PTR_ERR(hdesc);
1779 CDEBUG(D_INFO, "Checksum for algo %s\n", cfs_crypto_hash_name(cfs_alg));
1780 for (i = 0; i < desc->bd_iov_count; i++) {
1781 /* corrupt the data before we compute the checksum, to
1782 * simulate a client->OST data error */
1783 if (i == 0 && opc == OST_WRITE &&
1784 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) {
1785 int off = BD_GET_KIOV(desc, i).kiov_offset &
1787 int len = BD_GET_KIOV(desc, i).kiov_len;
1788 struct page *np = tgt_page_to_corrupt;
1789 char *ptr = kmap(BD_GET_KIOV(desc, i).kiov_page) + off;
1792 char *ptr2 = kmap(np) + off;
1794 memcpy(ptr2, ptr, len);
1795 memcpy(ptr2, "bad3", min(4, len));
1797 BD_GET_KIOV(desc, i).kiov_page = np;
1799 CERROR("%s: can't alloc page for corruption\n",
1803 cfs_crypto_hash_update_page(hdesc,
1804 BD_GET_KIOV(desc, i).kiov_page,
1805 BD_GET_KIOV(desc, i).kiov_offset &
1807 BD_GET_KIOV(desc, i).kiov_len);
1809 /* corrupt the data after we compute the checksum, to
1810 * simulate an OST->client data error */
1811 if (i == 0 && opc == OST_READ &&
1812 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND)) {
1813 int off = BD_GET_KIOV(desc, i).kiov_offset
1815 int len = BD_GET_KIOV(desc, i).kiov_len;
1816 struct page *np = tgt_page_to_corrupt;
1818 kmap(BD_GET_KIOV(desc, i).kiov_page) + off;
1821 char *ptr2 = kmap(np) + off;
1823 memcpy(ptr2, ptr, len);
1824 memcpy(ptr2, "bad4", min(4, len));
1826 BD_GET_KIOV(desc, i).kiov_page = np;
1828 CERROR("%s: can't alloc page for corruption\n",
1834 bufsize = sizeof(cksum);
1835 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1840 int tgt_brw_read(struct tgt_session_info *tsi)
1842 struct ptlrpc_request *req = tgt_ses_req(tsi);
1843 struct ptlrpc_bulk_desc *desc = NULL;
1844 struct obd_export *exp = tsi->tsi_exp;
1845 struct niobuf_remote *remote_nb;
1846 struct niobuf_local *local_nb;
1847 struct obd_ioobj *ioo;
1848 struct ost_body *body, *repbody;
1849 struct l_wait_info lwi;
1850 struct lustre_handle lockh = { 0 };
1851 int npages, nob = 0, rc, i, no_reply = 0;
1852 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
1856 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
1857 CERROR("%s: deny read request from %s to portal %u\n",
1858 tgt_name(tsi->tsi_tgt),
1859 obd_export_nid2str(req->rq_export),
1860 ptlrpc_req2svc(req)->srv_req_portal);
1864 req->rq_bulk_read = 1;
1866 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
1869 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
1870 cfs_fail_val : (obd_timeout + 1) / 4);
1872 /* Check if there is eviction in progress, and if so, wait for it to
1874 if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
1875 /* We do not care how long it takes */
1876 lwi = LWI_INTR(NULL, NULL);
1877 rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
1878 !atomic_read(&exp->exp_obd->obd_evict_inprogress),
1882 /* There must be big cache in current thread to process this request
1883 * if it is NULL then something went wrong and it wasn't allocated,
1884 * report -ENOMEM in that case */
1888 body = tsi->tsi_ost_body;
1889 LASSERT(body != NULL);
1891 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
1892 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
1894 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
1895 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
1897 local_nb = tbc->local;
1899 rc = tgt_brw_lock(exp->exp_obd->obd_namespace, &tsi->tsi_resid, ioo,
1900 remote_nb, &lockh, LCK_PR);
1905 * If getting the lock took more time than
1906 * client was willing to wait, drop it. b=11330
1908 if (cfs_time_current_sec() > req->rq_deadline ||
1909 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
1911 CERROR("Dropping timed-out read from %s because locking"
1912 "object "DOSTID" took %ld seconds (limit was %ld).\n",
1913 libcfs_id2str(req->rq_peer), POSTID(&ioo->ioo_oid),
1914 cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
1915 req->rq_deadline - req->rq_arrival_time.tv_sec);
1916 GOTO(out_lock, rc = -ETIMEDOUT);
1919 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1920 repbody->oa = body->oa;
1922 npages = PTLRPC_MAX_BRW_PAGES;
1923 rc = obd_preprw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1,
1924 ioo, remote_nb, &npages, local_nb);
1928 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
1929 PTLRPC_BULK_PUT_SOURCE |
1930 PTLRPC_BULK_BUF_KIOV,
1932 &ptlrpc_bulk_kiov_nopin_ops);
1934 GOTO(out_commitrw, rc = -ENOMEM);
1937 for (i = 0; i < npages; i++) {
1938 int page_rc = local_nb[i].lnb_rc;
1946 if (page_rc != 0) { /* some data! */
1947 LASSERT(local_nb[i].lnb_page != NULL);
1948 desc->bd_frag_ops->add_kiov_frag
1949 (desc, local_nb[i].lnb_page,
1950 local_nb[i].lnb_page_offset,
1954 if (page_rc != local_nb[i].lnb_len) { /* short read */
1955 /* All subsequent pages should be 0 */
1956 while (++i < npages)
1957 LASSERT(local_nb[i].lnb_rc == 0);
1961 if (OBD_FAIL_CHECK(OBD_FAIL_OST_READ_SIZE) &&
1962 nob != cfs_fail_val)
1965 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1966 cksum_type_t cksum_type =
1967 cksum_type_unpack(body->oa.o_valid & OBD_MD_FLFLAGS ?
1968 body->oa.o_flags : 0);
1969 repbody->oa.o_flags = cksum_type_pack(cksum_type);
1970 repbody->oa.o_valid = OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1971 repbody->oa.o_cksum = tgt_checksum_bulk(tsi->tsi_tgt, desc,
1972 OST_READ, cksum_type);
1973 CDEBUG(D_PAGE, "checksum at read origin: %x\n",
1974 repbody->oa.o_cksum);
1976 repbody->oa.o_valid = 0;
1978 /* We're finishing using body->oa as an input variable */
1980 /* Check if client was evicted while we were doing i/o before touching
1982 if (likely(rc == 0 &&
1983 !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
1984 rc = target_bulk_io(exp, desc, &lwi);
1989 /* Must commit after prep above in all cases */
1990 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1, ioo,
1991 remote_nb, npages, local_nb, rc);
1993 tgt_drop_id(exp, &repbody->oa);
1995 tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PR);
1997 if (desc && !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))
1998 ptlrpc_free_bulk(desc);
2003 ptlrpc_lprocfs_brw(req, nob);
2004 } else if (no_reply) {
2005 req->rq_no_reply = 1;
2006 /* reply out callback would free */
2007 ptlrpc_req_drop_rs(req);
2008 LCONSOLE_WARN("%s: Bulk IO read error with %s (at %s), "
2009 "client will retry: rc %d\n",
2010 exp->exp_obd->obd_name,
2011 obd_uuid2str(&exp->exp_client_uuid),
2012 obd_export_nid2str(exp), rc);
2014 /* send a bulk after reply to simulate a network delay or reordering
2016 if (unlikely(CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
2017 wait_queue_head_t waitq;
2018 struct l_wait_info lwi1;
2020 CDEBUG(D_INFO, "reorder BULK\n");
2021 init_waitqueue_head(&waitq);
2023 lwi1 = LWI_TIMEOUT_INTR(cfs_time_seconds(3), NULL, NULL, NULL);
2024 l_wait_event(waitq, 0, &lwi1);
2025 target_bulk_io(exp, desc, &lwi);
2026 ptlrpc_free_bulk(desc);
2031 EXPORT_SYMBOL(tgt_brw_read);
2033 static void tgt_warn_on_cksum(struct ptlrpc_request *req,
2034 struct ptlrpc_bulk_desc *desc,
2035 struct niobuf_local *local_nb, int npages,
2036 u32 client_cksum, u32 server_cksum,
2039 struct obd_export *exp = req->rq_export;
2040 struct ost_body *body;
2044 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
2045 LASSERT(body != NULL);
2047 if (req->rq_peer.nid != desc->bd_sender) {
2049 router = libcfs_nid2str(desc->bd_sender);
2053 CDEBUG_LIMIT(D_INFO, "client csum %x, server csum %x\n",
2054 client_cksum, server_cksum);
2058 LCONSOLE_ERROR_MSG(0x168, "BAD WRITE CHECKSUM: %s from %s%s%s inode "
2059 DFID" object "DOSTID" extent ["LPU64"-"LPU64
2060 "]: client csum %x, server csum %x\n",
2061 exp->exp_obd->obd_name, libcfs_id2str(req->rq_peer),
2063 body->oa.o_valid & OBD_MD_FLFID ?
2064 body->oa.o_parent_seq : (__u64)0,
2065 body->oa.o_valid & OBD_MD_FLFID ?
2066 body->oa.o_parent_oid : 0,
2067 body->oa.o_valid & OBD_MD_FLFID ?
2068 body->oa.o_parent_ver : 0,
2069 POSTID(&body->oa.o_oi),
2070 local_nb[0].lnb_file_offset,
2071 local_nb[npages-1].lnb_file_offset +
2072 local_nb[npages - 1].lnb_len - 1,
2073 client_cksum, server_cksum);
2076 int tgt_brw_write(struct tgt_session_info *tsi)
2078 struct ptlrpc_request *req = tgt_ses_req(tsi);
2079 struct ptlrpc_bulk_desc *desc = NULL;
2080 struct obd_export *exp = req->rq_export;
2081 struct niobuf_remote *remote_nb;
2082 struct niobuf_local *local_nb;
2083 struct obd_ioobj *ioo;
2084 struct ost_body *body, *repbody;
2085 struct l_wait_info lwi;
2086 struct lustre_handle lockh = {0};
2088 int objcount, niocount, npages;
2090 cksum_type_t cksum_type = OBD_CKSUM_CRC32;
2091 bool no_reply = false, mmap;
2092 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
2096 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
2097 CERROR("%s: deny write request from %s to portal %u\n",
2098 tgt_name(tsi->tsi_tgt),
2099 obd_export_nid2str(req->rq_export),
2100 ptlrpc_req2svc(req)->srv_req_portal);
2101 RETURN(err_serious(-EPROTO));
2104 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC))
2105 RETURN(err_serious(-ENOSPC));
2106 if (OBD_FAIL_TIMEOUT(OBD_FAIL_OST_EROFS, 1))
2107 RETURN(err_serious(-EROFS));
2109 req->rq_bulk_write = 1;
2111 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
2112 RETURN(err_serious(-EIO));
2113 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK2))
2114 RETURN(err_serious(-EFAULT));
2116 /* pause before transaction has been started */
2117 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
2118 cfs_fail_val : (obd_timeout + 1) / 4);
2120 /* There must be big cache in current thread to process this request
2121 * if it is NULL then something went wrong and it wasn't allocated,
2122 * report -ENOMEM in that case */
2126 body = tsi->tsi_ost_body;
2127 LASSERT(body != NULL);
2129 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2130 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
2132 objcount = req_capsule_get_size(&req->rq_pill, &RMF_OBD_IOOBJ,
2133 RCL_CLIENT) / sizeof(*ioo);
2135 for (niocount = i = 0; i < objcount; i++)
2136 niocount += ioo[i].ioo_bufcnt;
2138 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2139 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
2140 if (niocount != req_capsule_get_size(&req->rq_pill,
2141 &RMF_NIOBUF_REMOTE, RCL_CLIENT) /
2143 RETURN(err_serious(-EPROTO));
2145 if ((remote_nb[0].rnb_flags & OBD_BRW_MEMALLOC) &&
2146 (exp->exp_connection->c_peer.nid == exp->exp_connection->c_self))
2147 memory_pressure_set();
2149 req_capsule_set_size(&req->rq_pill, &RMF_RCS, RCL_SERVER,
2150 niocount * sizeof(*rcs));
2151 rc = req_capsule_server_pack(&req->rq_pill);
2153 GOTO(out, rc = err_serious(rc));
2155 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_PACK, cfs_fail_val);
2156 rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
2158 local_nb = tbc->local;
2160 rc = tgt_brw_lock(exp->exp_obd->obd_namespace, &tsi->tsi_resid, ioo,
2161 remote_nb, &lockh, LCK_PW);
2166 * If getting the lock took more time than
2167 * client was willing to wait, drop it. b=11330
2169 if (cfs_time_current_sec() > req->rq_deadline ||
2170 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
2172 CERROR("%s: Dropping timed-out write from %s because locking "
2173 "object "DOSTID" took %ld seconds (limit was %ld).\n",
2174 tgt_name(tsi->tsi_tgt), libcfs_id2str(req->rq_peer),
2175 POSTID(&ioo->ioo_oid),
2176 cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
2177 req->rq_deadline - req->rq_arrival_time.tv_sec);
2178 GOTO(out_lock, rc = -ETIMEDOUT);
2181 /* Because we already sync grant info with client when reconnect,
2182 * grant info will be cleared for resent req, then fed_grant and
2183 * total_grant will not be modified in following preprw_write */
2184 if (lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) {
2185 DEBUG_REQ(D_CACHE, req, "clear resent/replay req grant info");
2186 body->oa.o_valid &= ~OBD_MD_FLGRANT;
2189 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2190 if (repbody == NULL)
2191 GOTO(out_lock, rc = -ENOMEM);
2192 repbody->oa = body->oa;
2194 npages = PTLRPC_MAX_BRW_PAGES;
2195 rc = obd_preprw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
2196 objcount, ioo, remote_nb, &npages, local_nb);
2200 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
2201 PTLRPC_BULK_GET_SINK | PTLRPC_BULK_BUF_KIOV,
2203 &ptlrpc_bulk_kiov_nopin_ops);
2205 GOTO(skip_transfer, rc = -ENOMEM);
2207 /* NB Having prepped, we must commit... */
2208 for (i = 0; i < npages; i++)
2209 desc->bd_frag_ops->add_kiov_frag(desc,
2210 local_nb[i].lnb_page,
2211 local_nb[i].lnb_page_offset,
2212 local_nb[i].lnb_len);
2214 rc = sptlrpc_svc_prep_bulk(req, desc);
2216 GOTO(skip_transfer, rc);
2218 rc = target_bulk_io(exp, desc, &lwi);
2222 if (body->oa.o_valid & OBD_MD_FLCKSUM && rc == 0) {
2223 static int cksum_counter;
2225 if (body->oa.o_valid & OBD_MD_FLFLAGS)
2226 cksum_type = cksum_type_unpack(body->oa.o_flags);
2228 repbody->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
2229 repbody->oa.o_flags &= ~OBD_FL_CKSUM_ALL;
2230 repbody->oa.o_flags |= cksum_type_pack(cksum_type);
2231 repbody->oa.o_cksum = tgt_checksum_bulk(tsi->tsi_tgt, desc,
2232 OST_WRITE, cksum_type);
2235 if (unlikely(body->oa.o_cksum != repbody->oa.o_cksum)) {
2236 mmap = (body->oa.o_valid & OBD_MD_FLFLAGS &&
2237 body->oa.o_flags & OBD_FL_MMAP);
2239 tgt_warn_on_cksum(req, desc, local_nb, npages,
2241 repbody->oa.o_cksum, mmap);
2243 } else if ((cksum_counter & (-cksum_counter)) ==
2245 CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n",
2246 cksum_counter, libcfs_id2str(req->rq_peer),
2247 repbody->oa.o_cksum);
2251 /* Must commit after prep above in all cases */
2252 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
2253 objcount, ioo, remote_nb, npages, local_nb, rc);
2254 if (rc == -ENOTCONN)
2255 /* quota acquire process has been given up because
2256 * either the client has been evicted or the client
2257 * has timed out the request already */
2261 * Disable sending mtime back to the client. If the client locked the
2262 * whole object, then it has already updated the mtime on its side,
2263 * otherwise it will have to glimpse anyway (see bug 21489, comment 32)
2265 repbody->oa.o_valid &= ~(OBD_MD_FLMTIME | OBD_MD_FLATIME);
2270 /* set per-requested niobuf return codes */
2271 for (i = j = 0; i < niocount; i++) {
2272 int len = remote_nb[i].rnb_len;
2277 LASSERT(j < npages);
2278 if (local_nb[j].lnb_rc < 0)
2279 rcs[i] = local_nb[j].lnb_rc;
2280 len -= local_nb[j].lnb_len;
2285 LASSERT(j == npages);
2286 ptlrpc_lprocfs_brw(req, nob);
2288 tgt_drop_id(exp, &repbody->oa);
2291 tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PW);
2293 ptlrpc_free_bulk(desc);
2296 req->rq_no_reply = 1;
2297 /* reply out callback would free */
2298 ptlrpc_req_drop_rs(req);
2299 LCONSOLE_WARN("%s: Bulk IO write error with %s (at %s), "
2300 "client will retry: rc %d\n",
2301 exp->exp_obd->obd_name,
2302 obd_uuid2str(&exp->exp_client_uuid),
2303 obd_export_nid2str(exp), rc);
2305 memory_pressure_clr();
2308 EXPORT_SYMBOL(tgt_brw_write);
2310 /* Check if request can be reconstructed from saved reply data
2311 * A copy of the reply data is returned in @trd if the pointer is not NULL
2313 bool req_can_reconstruct(struct ptlrpc_request *req,
2314 struct tg_reply_data *trd)
2316 struct tg_export_data *ted = &req->rq_export->exp_target_data;
2317 struct lsd_client_data *lcd = ted->ted_lcd;
2320 if (tgt_is_multimodrpcs_client(req->rq_export))
2321 return tgt_lookup_reply(req, trd);
2323 mutex_lock(&ted->ted_lcd_lock);
2324 found = req->rq_xid == lcd->lcd_last_xid ||
2325 req->rq_xid == lcd->lcd_last_close_xid;
2327 if (found && trd != NULL) {
2328 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
2329 trd->trd_reply.lrd_xid = lcd->lcd_last_close_xid;
2330 trd->trd_reply.lrd_transno =
2331 lcd->lcd_last_close_transno;
2332 trd->trd_reply.lrd_result = lcd->lcd_last_close_result;
2334 trd->trd_reply.lrd_xid = lcd->lcd_last_xid;
2335 trd->trd_reply.lrd_transno = lcd->lcd_last_transno;
2336 trd->trd_reply.lrd_result = lcd->lcd_last_result;
2337 trd->trd_reply.lrd_data = lcd->lcd_last_data;
2338 trd->trd_pre_versions[0] = lcd->lcd_pre_versions[0];
2339 trd->trd_pre_versions[1] = lcd->lcd_pre_versions[1];
2340 trd->trd_pre_versions[2] = lcd->lcd_pre_versions[2];
2341 trd->trd_pre_versions[3] = lcd->lcd_pre_versions[3];
2344 mutex_unlock(&ted->ted_lcd_lock);
2348 EXPORT_SYMBOL(req_can_reconstruct);