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) 2011, 2012, 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
38 #include <obd_class.h>
39 #include <obd_cksum.h>
41 #include "tgt_internal.h"
43 char *tgt_name(struct lu_target *tgt)
45 LASSERT(tgt->lut_obd != NULL);
46 return tgt->lut_obd->obd_name;
48 EXPORT_SYMBOL(tgt_name);
51 * Generic code handling requests that have struct mdt_body passed in:
53 * - extract mdt_body from request and save it in @tsi, if present;
55 * - create lu_object, corresponding to the fid in mdt_body, and save it in
58 * - if HABEO_CORPUS flag is set for this request type check whether object
59 * actually exists on storage (lu_object_exists()).
62 static int tgt_mdt_body_unpack(struct tgt_session_info *tsi, __u32 flags)
64 const struct mdt_body *body;
65 struct lu_object *obj;
66 struct req_capsule *pill = tsi->tsi_pill;
71 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
75 tsi->tsi_mdt_body = body;
77 if (!(body->valid & OBD_MD_FLID))
80 /* mdc_pack_body() doesn't check if fid is zero and set OBD_ML_FID
81 * in any case in pre-2.5 clients. Fix that here if needed */
82 if (unlikely(fid_is_zero(&body->fid1)))
85 if (!fid_is_sane(&body->fid1)) {
86 CERROR("%s: invalid FID: "DFID"\n", tgt_name(tsi->tsi_tgt),
91 obj = lu_object_find(tsi->tsi_env,
92 &tsi->tsi_tgt->lut_bottom->dd_lu_dev,
95 if ((flags & HABEO_CORPUS) && !lu_object_exists(obj)) {
96 lu_object_put(tsi->tsi_env, obj);
97 /* for capability renew ENOENT will be handled in
99 if (body->valid & OBD_MD_FLOSSCAPA)
104 tsi->tsi_corpus = obj;
111 tsi->tsi_fid = body->fid1;
117 * Validate oa from client.
118 * If the request comes from 2.0 clients, currently only RSVD seq and IDIF
120 * a. objects in Single MDT FS seq = FID_SEQ_OST_MDT0, oi_id != 0
121 * b. Echo objects(seq = 2), old echo client still use oi_id/oi_seq to
122 * pack ost_id. Because non-zero oi_seq will make it diffcult to tell
123 * whether this is oi_fid or real ostid. So it will check
124 * OBD_CONNECT_FID, then convert the ostid to FID for old client.
125 * c. Old FID-disable osc will send IDIF.
126 * d. new FID-enable osc/osp will send normal FID.
128 * And also oi_id/f_oid should always start from 1. oi_id/f_oid = 0 will
129 * be used for LAST_ID file, and only being accessed inside OST now.
131 int tgt_validate_obdo(struct tgt_session_info *tsi, struct obdo *oa)
137 if (unlikely(!(exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_FID) &&
138 fid_seq_is_echo(oa->o_oi.oi.oi_seq))) {
139 /* Sigh 2.[123] client still sends echo req with oi_id = 0
140 * during create, and we will reset this to 1, since this
141 * oi_id is basically useless in the following create process,
142 * but oi_id == 0 will make it difficult to tell whether it is
143 * real FID or ost_id. */
144 oa->o_oi.oi_fid.f_oid = oa->o_oi.oi.oi_id ?: 1;
145 oa->o_oi.oi_fid.f_seq = FID_SEQ_ECHO;
146 oa->o_oi.oi_fid.f_ver = 0;
148 if (unlikely((oa->o_valid & OBD_MD_FLID &&
149 ostid_id(&oa->o_oi) == 0)))
150 GOTO(out, rc = -EPROTO);
152 /* Note: this check might be forced in 2.5 or 2.6, i.e.
153 * all of the requests are required to setup FLGROUP */
154 if (unlikely(!(oa->o_valid & OBD_MD_FLGROUP))) {
155 ostid_set_seq_mdt0(&oa->o_oi);
156 oa->o_valid |= OBD_MD_FLGROUP;
159 if (unlikely(!(fid_seq_is_idif(ostid_seq(&oa->o_oi)) ||
160 fid_seq_is_mdt0(ostid_seq(&oa->o_oi)) ||
161 fid_seq_is_norm(ostid_seq(&oa->o_oi)) ||
162 fid_seq_is_echo(ostid_seq(&oa->o_oi)))))
163 GOTO(out, rc = -EPROTO);
167 CERROR("%s: client %s sent bad object "DOSTID": rc = %d\n",
168 tgt_name(tsi->tsi_tgt), obd_export_nid2str(tsi->tsi_exp),
169 ostid_seq(&oa->o_oi), ostid_id(&oa->o_oi), rc);
172 EXPORT_SYMBOL(tgt_validate_obdo);
174 static int tgt_io_data_unpack(struct tgt_session_info *tsi, struct ost_id *oi)
177 struct niobuf_remote *rnb;
178 struct obd_ioobj *ioo;
183 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
187 rnb = req_capsule_client_get(tsi->tsi_pill, &RMF_NIOBUF_REMOTE);
191 max_brw = ioobj_max_brw_get(ioo);
192 if (unlikely((max_brw & (max_brw - 1)) != 0)) {
193 CERROR("%s: client %s sent bad ioobj max %u for "DOSTID
194 ": rc = %d\n", tgt_name(tsi->tsi_tgt),
195 obd_export_nid2str(tsi->tsi_exp), max_brw,
196 POSTID(oi), -EPROTO);
201 obj_count = req_capsule_get_size(tsi->tsi_pill, &RMF_OBD_IOOBJ,
202 RCL_CLIENT) / sizeof(*ioo);
203 if (obj_count == 0) {
204 CERROR("%s: short ioobj\n", tgt_name(tsi->tsi_tgt));
206 } else if (obj_count > 1) {
207 CERROR("%s: too many ioobjs (%d)\n", tgt_name(tsi->tsi_tgt),
212 if (ioo->ioo_bufcnt == 0) {
213 CERROR("%s: ioo has zero bufcnt\n", tgt_name(tsi->tsi_tgt));
217 if (ioo->ioo_bufcnt > PTLRPC_MAX_BRW_PAGES) {
218 DEBUG_REQ(D_RPCTRACE, tgt_ses_req(tsi),
219 "bulk has too many pages (%d)",
227 static int tgt_ost_body_unpack(struct tgt_session_info *tsi, __u32 flags)
229 struct ost_body *body;
230 struct req_capsule *pill = tsi->tsi_pill;
231 struct lustre_capa *capa;
236 body = req_capsule_client_get(pill, &RMF_OST_BODY);
240 rc = tgt_validate_obdo(tsi, &body->oa);
244 if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
245 capa = req_capsule_client_get(pill, &RMF_CAPA1);
247 CERROR("%s: OSSCAPA flag is set without capability\n",
248 tgt_name(tsi->tsi_tgt));
253 tsi->tsi_ost_body = body;
255 if (req_capsule_has_field(pill, &RMF_OBD_IOOBJ, RCL_CLIENT)) {
256 rc = tgt_io_data_unpack(tsi, &body->oa.o_oi);
261 if (!(body->oa.o_valid & OBD_MD_FLID)) {
262 if (flags & HABEO_CORPUS) {
263 CERROR("%s: OBD_MD_FLID flag is not set in ost_body "
264 "but OID/FID is mandatory with HABEO_CORPUS\n",
265 tgt_name(tsi->tsi_tgt));
272 rc = ostid_to_fid(&tsi->tsi_fid, &body->oa.o_oi, 0);
276 if (!fid_is_sane(&tsi->tsi_fid)) {
277 CERROR("%s: invalid FID: "DFID"\n", tgt_name(tsi->tsi_tgt),
278 PFID(&tsi->tsi_fid));
282 ost_fid_build_resid(&tsi->tsi_fid, &tsi->tsi_resid);
285 * OST doesn't get object in advance for further use to prevent
286 * situations with nested object_find which is potential deadlock.
288 tsi->tsi_corpus = NULL;
293 * Do necessary preprocessing according to handler ->th_flags.
295 static int tgt_request_preprocess(struct tgt_session_info *tsi,
296 struct tgt_handler *h,
297 struct ptlrpc_request *req)
299 struct req_capsule *pill = tsi->tsi_pill;
300 __u32 flags = h->th_flags;
305 if (tsi->tsi_preprocessed)
308 LASSERT(h->th_act != NULL);
309 LASSERT(h->th_opc == lustre_msg_get_opc(req->rq_reqmsg));
310 LASSERT(current->journal_info == NULL);
312 LASSERT(ergo(flags & (HABEO_CORPUS | HABEO_REFERO),
314 if (h->th_fmt != NULL) {
315 req_capsule_set(pill, h->th_fmt);
316 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT)) {
317 rc = tgt_mdt_body_unpack(tsi, flags);
320 } else if (req_capsule_has_field(pill, &RMF_OST_BODY,
322 rc = tgt_ost_body_unpack(tsi, flags);
328 if (flags & MUTABOR && tgt_conn_flags(tsi) & OBD_CONNECT_RDONLY)
331 if (flags & HABEO_CLAVIS) {
332 struct ldlm_request *dlm_req;
334 LASSERT(h->th_fmt != NULL);
336 dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
337 if (dlm_req != NULL) {
338 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
340 dlm_req->lock_desc.l_policy_data.\
341 l_inodebits.bits == 0)) {
343 * Lock without inodebits makes no sense and
344 * will oops later in ldlm. If client miss to
345 * set such bits, do not trigger ASSERTION.
347 * For liblustre flock case, it maybe zero.
351 tsi->tsi_dlm_req = dlm_req;
357 tsi->tsi_preprocessed = 1;
362 * Invoke handler for this request opc. Also do necessary preprocessing
363 * (according to handler ->th_flags), and post-processing (setting of
364 * ->last_{xid,committed}).
366 static int tgt_handle_request0(struct tgt_session_info *tsi,
367 struct tgt_handler *h,
368 struct ptlrpc_request *req)
376 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
377 * to put same checks into handlers like mdt_close(), mdt_reint(),
378 * etc., without talking to mdt authors first. Checking same thing
379 * there again is useless and returning 0 error without packing reply
380 * is buggy! Handlers either pack reply or return error.
382 * We return 0 here and do not send any reply in order to emulate
383 * network failure. Do not send any reply in case any of NET related
384 * fail_id has occured.
386 if (OBD_FAIL_CHECK_ORSET(h->th_fail_id, OBD_FAIL_ONCE))
389 rc = tgt_request_preprocess(tsi, h, req);
390 /* pack reply if reply format is fixed */
391 if (rc == 0 && h->th_flags & HABEO_REFERO) {
393 if (req_capsule_has_field(tsi->tsi_pill, &RMF_MDT_MD,
395 req_capsule_set_size(tsi->tsi_pill, &RMF_MDT_MD,
397 tsi->tsi_mdt_body->eadatasize);
398 if (req_capsule_has_field(tsi->tsi_pill, &RMF_LOGCOOKIES,
400 req_capsule_set_size(tsi->tsi_pill, &RMF_LOGCOOKIES,
403 rc = req_capsule_server_pack(tsi->tsi_pill);
406 if (likely(rc == 0)) {
408 * Process request, there can be two types of rc:
409 * 1) errors with msg unpack/pack, other failures outside the
410 * operation itself. This is counted as serious errors;
411 * 2) errors during fs operation, should be placed in rq_status
415 if (!is_serious(rc) &&
416 !req->rq_no_reply && req->rq_reply_state == NULL) {
417 DEBUG_REQ(D_ERROR, req, "%s \"handler\" %s did not "
418 "pack reply and returned 0 error\n",
419 tgt_name(tsi->tsi_tgt), h->th_name);
422 serious = is_serious(rc);
423 rc = clear_serious(rc);
431 * ELDLM_* codes which > 0 should be in rq_status only as well as
432 * all non-serious errors.
434 if (rc > 0 || !serious)
437 LASSERT(current->journal_info == NULL);
439 if (likely(rc == 0 && req->rq_export))
440 target_committed_to_req(req);
442 target_send_reply(req, rc, tsi->tsi_reply_fail_id);
446 static int tgt_filter_recovery_request(struct ptlrpc_request *req,
447 struct obd_device *obd, int *process)
449 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
456 case MDS_DONE_WRITING:
457 case MDS_SYNC: /* used in unmounting */
470 *process = target_queue_recovery_request(req, obd);
474 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
481 * Handle recovery. Return:
482 * +1: continue request processing;
483 * -ve: abort immediately with the given error code;
484 * 0: send reply with error code in req->rq_status;
486 int tgt_handle_recovery(struct ptlrpc_request *req, int reply_fail_id)
490 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
495 case SEC_CTX_INIT_CONT:
500 if (!req->rq_export->exp_obd->obd_replayable)
503 /* sanity check: if the xid matches, the request must be marked as a
504 * resent or replayed */
505 if (req_xid_is_last(req)) {
506 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
507 (MSG_RESENT | MSG_REPLAY))) {
508 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches "
509 "last_xid, expected REPLAY or RESENT flag "
511 lustre_msg_get_flags(req->rq_reqmsg));
512 req->rq_status = -ENOTCONN;
516 /* else: note the opposite is not always true; a RESENT req after a
517 * failover will usually not match the last_xid, since it was likely
518 * never committed. A REPLAYed request will almost never match the
519 * last xid, however it could for a committed, but still retained,
522 /* Check for aborted recovery... */
523 if (unlikely(req->rq_export->exp_obd->obd_recovering)) {
527 DEBUG_REQ(D_INFO, req, "Got new replay");
528 rc = tgt_filter_recovery_request(req, req->rq_export->exp_obd,
530 if (rc != 0 || !should_process)
532 else if (should_process < 0) {
533 req->rq_status = should_process;
534 rc = ptlrpc_error(req);
541 /* Initial check for request, it is validation mostly */
542 static struct tgt_handler *tgt_handler_find_check(struct ptlrpc_request *req)
544 struct tgt_handler *h;
545 struct tgt_opc_slice *s;
546 struct lu_target *tgt;
547 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
551 tgt = class_exp2tgt(req->rq_export);
553 for (s = tgt->lut_slice; s->tos_hs != NULL; s++)
554 if (s->tos_opc_start <= opc && opc < s->tos_opc_end)
557 /* opcode was not found in slice */
558 if (unlikely(s->tos_hs == NULL)) {
559 CERROR("%s: no handlers for opcode 0x%x\n", tgt_name(tgt),
561 RETURN(ERR_PTR(-ENOTSUPP));
564 LASSERT(opc >= s->tos_opc_start && opc < s->tos_opc_end);
565 h = s->tos_hs + (opc - s->tos_opc_start);
566 if (unlikely(h->th_opc == 0)) {
567 CERROR("%s: unsupported opcode 0x%x\n", tgt_name(tgt), opc);
568 RETURN(ERR_PTR(-ENOTSUPP));
574 int tgt_request_handle(struct ptlrpc_request *req)
576 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
578 struct lustre_msg *msg = req->rq_reqmsg;
579 struct tgt_handler *h;
580 struct lu_target *tgt;
581 int request_fail_id = 0;
582 __u32 opc = lustre_msg_get_opc(msg);
587 /* Refill the context, to make sure all thread keys are allocated */
588 lu_env_refill(req->rq_svc_thread->t_env);
590 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
591 tsi->tsi_pill = &req->rq_pill;
592 tsi->tsi_env = req->rq_svc_thread->t_env;
594 /* if request has export then get handlers slice from corresponding
595 * target, otherwise that should be connect operation */
596 if (opc == MDS_CONNECT || opc == OST_CONNECT ||
597 opc == MGS_CONNECT) {
598 req_capsule_set(&req->rq_pill, &RQF_CONNECT);
599 rc = target_handle_connect(req);
601 rc = ptlrpc_error(req);
604 /* recovery-small test 18c asks to drop connect reply */
605 if (unlikely(opc == OST_CONNECT &&
606 OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET2)))
610 if (unlikely(!class_connected_export(req->rq_export))) {
611 CDEBUG(D_HA, "operation %d on unconnected OST from %s\n",
612 opc, libcfs_id2str(req->rq_peer));
613 req->rq_status = -ENOTCONN;
614 rc = ptlrpc_error(req);
618 tsi->tsi_tgt = tgt = class_exp2tgt(req->rq_export);
619 tsi->tsi_exp = req->rq_export;
620 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_JOBSTATS)
621 tsi->tsi_jobid = lustre_msg_get_jobid(req->rq_reqmsg);
623 tsi->tsi_jobid = NULL;
625 request_fail_id = tgt->lut_request_fail_id;
626 tsi->tsi_reply_fail_id = tgt->lut_reply_fail_id;
628 h = tgt_handler_find_check(req);
630 req->rq_status = PTR_ERR(h);
631 rc = ptlrpc_error(req);
635 if (CFS_FAIL_CHECK_ORSET(request_fail_id, CFS_FAIL_ONCE))
638 rc = lustre_msg_check_version(msg, h->th_version);
640 DEBUG_REQ(D_ERROR, req, "%s: drop mal-formed request, version"
641 " %08x, expecting %08x\n", tgt_name(tgt),
642 lustre_msg_get_version(msg), h->th_version);
643 req->rq_status = -EINVAL;
644 rc = ptlrpc_error(req);
648 rc = tgt_handle_recovery(req, tsi->tsi_reply_fail_id);
649 if (likely(rc == 1)) {
650 LASSERTF(h->th_opc == opc, "opcode mismatch %d != %d\n",
652 rc = tgt_handle_request0(tsi, h, req);
658 req_capsule_fini(tsi->tsi_pill);
659 if (tsi->tsi_corpus != NULL) {
660 lu_object_put(tsi->tsi_env, tsi->tsi_corpus);
661 tsi->tsi_corpus = NULL;
665 EXPORT_SYMBOL(tgt_request_handle);
667 /** Assign high priority operations to the request if needed. */
668 int tgt_hpreq_handler(struct ptlrpc_request *req)
670 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
671 struct tgt_handler *h;
676 if (req->rq_export == NULL)
679 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
680 tsi->tsi_pill = &req->rq_pill;
681 tsi->tsi_env = req->rq_svc_thread->t_env;
682 tsi->tsi_tgt = class_exp2tgt(req->rq_export);
683 tsi->tsi_exp = req->rq_export;
685 h = tgt_handler_find_check(req);
691 rc = tgt_request_preprocess(tsi, h, req);
692 if (unlikely(rc != 0))
695 if (h->th_hp != NULL)
699 EXPORT_SYMBOL(tgt_hpreq_handler);
701 void tgt_counter_incr(struct obd_export *exp, int opcode)
703 lprocfs_counter_incr(exp->exp_obd->obd_stats, opcode);
704 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_stats != NULL)
705 lprocfs_counter_incr(exp->exp_nid_stats->nid_stats, opcode);
707 EXPORT_SYMBOL(tgt_counter_incr);
710 * Unified target generic handlers.
716 static inline void tgt_init_sec_none(struct obd_connect_data *reply)
718 reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |
719 OBD_CONNECT_RMT_CLIENT_FORCE |
720 OBD_CONNECT_MDS_CAPA |
721 OBD_CONNECT_OSS_CAPA);
724 static int tgt_init_sec_level(struct ptlrpc_request *req)
726 struct lu_target *tgt = class_exp2tgt(req->rq_export);
727 char *client = libcfs_nid2str(req->rq_peer.nid);
728 struct obd_connect_data *data, *reply;
734 data = req_capsule_client_get(&req->rq_pill, &RMF_CONNECT_DATA);
735 reply = req_capsule_server_get(&req->rq_pill, &RMF_CONNECT_DATA);
736 if (data == NULL || reply == NULL)
739 /* connection from MDT is always trusted */
740 if (req->rq_auth_usr_mdt) {
741 tgt_init_sec_none(reply);
745 /* no GSS support case */
746 if (!req->rq_auth_gss) {
747 if (tgt->lut_sec_level > LUSTRE_SEC_NONE) {
748 CWARN("client %s -> target %s does not use GSS, "
749 "can not run under security level %d.\n",
750 client, tgt_name(tgt), tgt->lut_sec_level);
753 tgt_init_sec_none(reply);
758 /* old version case */
759 if (unlikely(!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) ||
760 !(data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) ||
761 !(data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA))) {
762 if (tgt->lut_sec_level > LUSTRE_SEC_NONE) {
763 CWARN("client %s -> target %s uses old version, "
764 "can not run under security level %d.\n",
765 client, tgt_name(tgt), tgt->lut_sec_level);
768 CWARN("client %s -> target %s uses old version, "
769 "run under security level %d.\n",
770 client, tgt_name(tgt), tgt->lut_sec_level);
771 tgt_init_sec_none(reply);
776 remote = data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT_FORCE;
778 if (!req->rq_auth_remote)
779 CDEBUG(D_SEC, "client (local realm) %s -> target %s "
780 "asked to be remote.\n", client, tgt_name(tgt));
781 } else if (req->rq_auth_remote) {
783 CDEBUG(D_SEC, "client (remote realm) %s -> target %s is set "
784 "as remote by default.\n", client, tgt_name(tgt));
788 if (!tgt->lut_oss_capa) {
790 "client %s -> target %s is set as remote,"
791 " but OSS capabilities are not enabled: %d.\n",
792 client, tgt_name(tgt), tgt->lut_oss_capa);
796 if (req->rq_auth_uid == INVALID_UID) {
797 CDEBUG(D_SEC, "client %s -> target %s: user is not "
798 "authenticated!\n", client, tgt_name(tgt));
804 switch (tgt->lut_sec_level) {
805 case LUSTRE_SEC_NONE:
808 "client %s -> target %s is set as remote, "
809 "can not run under security level %d.\n",
810 client, tgt_name(tgt), tgt->lut_sec_level);
813 tgt_init_sec_none(reply);
815 case LUSTRE_SEC_REMOTE:
817 tgt_init_sec_none(reply);
822 reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |
823 OBD_CONNECT_RMT_CLIENT_FORCE);
824 if (!tgt->lut_oss_capa)
825 reply->ocd_connect_flags &= ~OBD_CONNECT_OSS_CAPA;
826 if (!tgt->lut_mds_capa)
827 reply->ocd_connect_flags &= ~OBD_CONNECT_MDS_CAPA;
836 int tgt_connect_check_sptlrpc(struct ptlrpc_request *req, struct obd_export *exp)
838 struct lu_target *tgt = class_exp2tgt(exp);
839 struct sptlrpc_flavor flvr;
843 LASSERT(tgt->lut_obd);
844 LASSERT(tgt->lut_slice);
846 /* always allow ECHO client */
847 if (unlikely(strcmp(exp->exp_obd->obd_type->typ_name,
848 LUSTRE_ECHO_NAME) == 0)) {
849 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
853 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
854 read_lock(&tgt->lut_sptlrpc_lock);
855 sptlrpc_target_choose_flavor(&tgt->lut_sptlrpc_rset,
859 read_unlock(&tgt->lut_sptlrpc_lock);
861 spin_lock(&exp->exp_lock);
862 exp->exp_sp_peer = req->rq_sp_from;
863 exp->exp_flvr = flvr;
864 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
865 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
866 CERROR("%s: unauthorized rpc flavor %x from %s, "
867 "expect %x\n", tgt_name(tgt),
869 libcfs_nid2str(req->rq_peer.nid),
870 exp->exp_flvr.sf_rpc);
873 spin_unlock(&exp->exp_lock);
875 if (exp->exp_sp_peer != req->rq_sp_from) {
876 CERROR("%s: RPC source %s doesn't match %s\n",
878 sptlrpc_part2name(req->rq_sp_from),
879 sptlrpc_part2name(exp->exp_sp_peer));
882 rc = sptlrpc_target_export_check(exp, req);
889 int tgt_adapt_sptlrpc_conf(struct lu_target *tgt, int initial)
891 struct sptlrpc_rule_set tmp_rset;
894 sptlrpc_rule_set_init(&tmp_rset);
895 rc = sptlrpc_conf_target_get_rules(tgt->lut_obd, &tmp_rset, initial);
897 CERROR("%s: failed get sptlrpc rules: rc = %d\n",
902 sptlrpc_target_update_exp_flavor(tgt->lut_obd, &tmp_rset);
904 write_lock(&tgt->lut_sptlrpc_lock);
905 sptlrpc_rule_set_free(&tgt->lut_sptlrpc_rset);
906 tgt->lut_sptlrpc_rset = tmp_rset;
907 write_unlock(&tgt->lut_sptlrpc_lock);
911 EXPORT_SYMBOL(tgt_adapt_sptlrpc_conf);
913 int tgt_connect(struct tgt_session_info *tsi)
915 struct ptlrpc_request *req = tgt_ses_req(tsi);
916 struct obd_connect_data *reply;
921 rc = tgt_init_sec_level(req);
925 /* XXX: better to call this check right after getting new export but
926 * before last_rcvd slot allocation to avoid server load upon insecure
927 * connects. This is to be fixed after unifiyng all targets.
929 rc = tgt_connect_check_sptlrpc(req, tsi->tsi_exp);
933 /* To avoid exposing partially initialized connection flags, changes up
934 * to this point have been staged in reply->ocd_connect_flags. Now that
935 * connection handling has completed successfully, atomically update
936 * the connect flags in the shared export data structure. LU-1623 */
937 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_CONNECT_DATA);
938 spin_lock(&tsi->tsi_exp->exp_lock);
939 *exp_connect_flags_ptr(tsi->tsi_exp) = reply->ocd_connect_flags;
940 tsi->tsi_exp->exp_connect_data.ocd_brw_size = reply->ocd_brw_size;
941 spin_unlock(&tsi->tsi_exp->exp_lock);
945 obd_disconnect(class_export_get(tsi->tsi_exp));
948 EXPORT_SYMBOL(tgt_connect);
950 int tgt_disconnect(struct tgt_session_info *tsi)
956 rc = target_handle_disconnect(tgt_ses_req(tsi));
958 RETURN(err_serious(rc));
962 EXPORT_SYMBOL(tgt_disconnect);
965 * Unified target OBD handlers
967 int tgt_obd_ping(struct tgt_session_info *tsi)
973 rc = target_handle_ping(tgt_ses_req(tsi));
975 RETURN(err_serious(rc));
979 EXPORT_SYMBOL(tgt_obd_ping);
981 int tgt_obd_log_cancel(struct tgt_session_info *tsi)
983 return err_serious(-EOPNOTSUPP);
985 EXPORT_SYMBOL(tgt_obd_log_cancel);
987 int tgt_obd_qc_callback(struct tgt_session_info *tsi)
989 return err_serious(-EOPNOTSUPP);
991 EXPORT_SYMBOL(tgt_obd_qc_callback);
993 int tgt_sendpage(struct tgt_session_info *tsi, struct lu_rdpg *rdpg, int nob)
995 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
996 struct ptlrpc_request *req = tgt_ses_req(tsi);
997 struct obd_export *exp = req->rq_export;
998 struct ptlrpc_bulk_desc *desc;
999 struct l_wait_info *lwi = &tti->tti_u.rdpg.tti_wait_info;
1007 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, 1, BULK_PUT_SOURCE,
1012 if (!(exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE))
1013 /* old client requires reply size in it's PAGE_CACHE_SIZE,
1014 * which is rdpg->rp_count */
1015 nob = rdpg->rp_count;
1017 for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
1018 i++, tmpcount -= tmpsize) {
1019 tmpsize = min_t(int, tmpcount, PAGE_CACHE_SIZE);
1020 ptlrpc_prep_bulk_page_pin(desc, rdpg->rp_pages[i], 0, tmpsize);
1023 LASSERT(desc->bd_nob == nob);
1024 rc = target_bulk_io(exp, desc, lwi);
1025 ptlrpc_free_bulk_pin(desc);
1028 EXPORT_SYMBOL(tgt_sendpage);
1031 * OBD_IDX_READ handler
1033 int tgt_obd_idx_read(struct tgt_session_info *tsi)
1035 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1036 struct lu_rdpg *rdpg = &tti->tti_u.rdpg.tti_rdpg;
1037 struct idx_info *req_ii, *rep_ii;
1042 memset(rdpg, 0, sizeof(*rdpg));
1043 req_capsule_set(tsi->tsi_pill, &RQF_OBD_IDX_READ);
1045 /* extract idx_info buffer from request & reply */
1046 req_ii = req_capsule_client_get(tsi->tsi_pill, &RMF_IDX_INFO);
1047 if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
1048 RETURN(err_serious(-EPROTO));
1050 rc = req_capsule_server_pack(tsi->tsi_pill);
1052 RETURN(err_serious(rc));
1054 rep_ii = req_capsule_server_get(tsi->tsi_pill, &RMF_IDX_INFO);
1056 RETURN(err_serious(-EFAULT));
1057 rep_ii->ii_magic = IDX_INFO_MAGIC;
1059 /* extract hash to start with */
1060 rdpg->rp_hash = req_ii->ii_hash_start;
1062 /* extract requested attributes */
1063 rdpg->rp_attrs = req_ii->ii_attrs;
1065 /* check that fid packed in request is valid and supported */
1066 if (!fid_is_sane(&req_ii->ii_fid))
1068 rep_ii->ii_fid = req_ii->ii_fid;
1071 rep_ii->ii_flags = req_ii->ii_flags;
1073 /* compute number of pages to allocate, ii_count is the number of 4KB
1075 if (req_ii->ii_count <= 0)
1076 GOTO(out, rc = -EFAULT);
1077 rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
1078 exp_max_brw_size(tsi->tsi_exp));
1079 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE -1) >> PAGE_CACHE_SHIFT;
1081 /* allocate pages to store the containers */
1082 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
1083 if (rdpg->rp_pages == NULL)
1084 GOTO(out, rc = -ENOMEM);
1085 for (i = 0; i < rdpg->rp_npages; i++) {
1086 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1087 if (rdpg->rp_pages[i] == NULL)
1088 GOTO(out, rc = -ENOMEM);
1091 /* populate pages with key/record pairs */
1092 rc = dt_index_read(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, rep_ii, rdpg);
1096 LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
1097 "asked %d > %d\n", rc, rdpg->rp_count);
1099 /* send pages to client */
1100 rc = tgt_sendpage(tsi, rdpg, rc);
1105 if (rdpg->rp_pages) {
1106 for (i = 0; i < rdpg->rp_npages; i++)
1107 if (rdpg->rp_pages[i])
1108 __free_page(rdpg->rp_pages[i]);
1109 OBD_FREE(rdpg->rp_pages,
1110 rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
1114 EXPORT_SYMBOL(tgt_obd_idx_read);
1116 struct tgt_handler tgt_obd_handlers[] = {
1117 TGT_OBD_HDL (0, OBD_PING, tgt_obd_ping),
1118 TGT_OBD_HDL_VAR(0, OBD_LOG_CANCEL, tgt_obd_log_cancel),
1119 TGT_OBD_HDL_VAR(0, OBD_QC_CALLBACK, tgt_obd_qc_callback),
1120 TGT_OBD_HDL (0, OBD_IDX_READ, tgt_obd_idx_read)
1122 EXPORT_SYMBOL(tgt_obd_handlers);
1124 int tgt_sync(const struct lu_env *env, struct lu_target *tgt,
1125 struct dt_object *obj)
1131 /* if no objid is specified, it means "sync whole filesystem" */
1133 rc = dt_sync(env, tgt->lut_bottom);
1134 } else if (dt_version_get(env, obj) >
1135 tgt->lut_obd->obd_last_committed) {
1136 rc = dt_object_sync(env, obj);
1141 EXPORT_SYMBOL(tgt_sync);
1143 * Unified target DLM handlers.
1146 /* Ensure that data and metadata are synced to the disk when lock is cancelled
1148 int tgt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1149 void *data, int flag)
1152 struct lu_target *tgt;
1153 struct dt_object *obj;
1159 tgt = class_exp2tgt(lock->l_export);
1161 if (flag == LDLM_CB_CANCELING &&
1162 (lock->l_granted_mode & (LCK_PW | LCK_GROUP)) &&
1163 (tgt->lut_sync_lock_cancel == ALWAYS_SYNC_ON_CANCEL ||
1164 (tgt->lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL &&
1165 lock->l_flags & LDLM_FL_CBPENDING))) {
1166 rc = lu_env_init(&env, LCT_DT_THREAD);
1167 if (unlikely(rc != 0))
1170 ost_fid_from_resid(&fid, &lock->l_resource->lr_name);
1171 obj = dt_locate(&env, tgt->lut_bottom, &fid);
1173 GOTO(err_env, rc = PTR_ERR(obj));
1175 if (!dt_object_exists(obj))
1176 GOTO(err_put, rc = -ENOENT);
1178 rc = tgt_sync(&env, tgt, obj);
1180 CERROR("%s: sync failed on lock cancel: rc = %d\n",
1184 lu_object_put(&env, &obj->do_lu);
1189 rc = ldlm_server_blocking_ast(lock, desc, data, flag);
1193 struct ldlm_callback_suite tgt_dlm_cbs = {
1194 .lcs_completion = ldlm_server_completion_ast,
1195 .lcs_blocking = tgt_blocking_ast,
1196 .lcs_glimpse = ldlm_server_glimpse_ast
1199 int tgt_enqueue(struct tgt_session_info *tsi)
1201 struct ptlrpc_request *req = tgt_ses_req(tsi);
1206 * tsi->tsi_dlm_req was already swapped and (if necessary) converted,
1207 * tsi->tsi_dlm_cbs was set by the *_req_handle() function.
1209 LASSERT(tsi->tsi_dlm_req != NULL);
1210 rc = ldlm_handle_enqueue0(tsi->tsi_exp->exp_obd->obd_namespace, req,
1211 tsi->tsi_dlm_req, &tgt_dlm_cbs);
1213 RETURN(err_serious(rc));
1215 RETURN(req->rq_status);
1217 EXPORT_SYMBOL(tgt_enqueue);
1219 int tgt_convert(struct tgt_session_info *tsi)
1221 struct ptlrpc_request *req = tgt_ses_req(tsi);
1225 LASSERT(tsi->tsi_dlm_req);
1226 rc = ldlm_handle_convert0(req, tsi->tsi_dlm_req);
1228 RETURN(err_serious(rc));
1230 RETURN(req->rq_status);
1232 EXPORT_SYMBOL(tgt_convert);
1234 int tgt_bl_callback(struct tgt_session_info *tsi)
1236 return err_serious(-EOPNOTSUPP);
1238 EXPORT_SYMBOL(tgt_bl_callback);
1240 int tgt_cp_callback(struct tgt_session_info *tsi)
1242 return err_serious(-EOPNOTSUPP);
1244 EXPORT_SYMBOL(tgt_cp_callback);
1246 /* generic LDLM target handler */
1247 struct tgt_handler tgt_dlm_handlers[] = {
1248 TGT_DLM_HDL (HABEO_CLAVIS, LDLM_ENQUEUE, tgt_enqueue),
1249 TGT_DLM_HDL_VAR(HABEO_CLAVIS, LDLM_CONVERT, tgt_convert),
1250 TGT_DLM_HDL_VAR(0, LDLM_BL_CALLBACK, tgt_bl_callback),
1251 TGT_DLM_HDL_VAR(0, LDLM_CP_CALLBACK, tgt_cp_callback)
1253 EXPORT_SYMBOL(tgt_dlm_handlers);
1256 * Unified target LLOG handlers.
1258 int tgt_llog_open(struct tgt_session_info *tsi)
1264 rc = llog_origin_handle_open(tgt_ses_req(tsi));
1268 EXPORT_SYMBOL(tgt_llog_open);
1270 int tgt_llog_close(struct tgt_session_info *tsi)
1276 rc = llog_origin_handle_close(tgt_ses_req(tsi));
1280 EXPORT_SYMBOL(tgt_llog_close);
1283 int tgt_llog_destroy(struct tgt_session_info *tsi)
1289 rc = llog_origin_handle_destroy(tgt_ses_req(tsi));
1293 EXPORT_SYMBOL(tgt_llog_destroy);
1295 int tgt_llog_read_header(struct tgt_session_info *tsi)
1301 rc = llog_origin_handle_read_header(tgt_ses_req(tsi));
1305 EXPORT_SYMBOL(tgt_llog_read_header);
1307 int tgt_llog_next_block(struct tgt_session_info *tsi)
1313 rc = llog_origin_handle_next_block(tgt_ses_req(tsi));
1317 EXPORT_SYMBOL(tgt_llog_next_block);
1319 int tgt_llog_prev_block(struct tgt_session_info *tsi)
1325 rc = llog_origin_handle_prev_block(tgt_ses_req(tsi));
1329 EXPORT_SYMBOL(tgt_llog_prev_block);
1331 /* generic llog target handler */
1332 struct tgt_handler tgt_llog_handlers[] = {
1333 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, tgt_llog_open),
1334 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
1335 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
1336 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
1337 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_DESTROY, tgt_llog_destroy),
1338 TGT_LLOG_HDL_VAR(0, LLOG_ORIGIN_HANDLE_CLOSE, tgt_llog_close),
1340 EXPORT_SYMBOL(tgt_llog_handlers);
1343 * sec context handlers
1345 /* XXX: Implement based on mdt_sec_ctx_handle()? */
1346 int tgt_sec_ctx_handle(struct tgt_session_info *tsi)
1351 struct tgt_handler tgt_sec_ctx_handlers[] = {
1352 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, tgt_sec_ctx_handle),
1353 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT, tgt_sec_ctx_handle),
1354 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, tgt_sec_ctx_handle),
1356 EXPORT_SYMBOL(tgt_sec_ctx_handlers);
1359 * initialize per-thread page pool (bug 5137).
1361 int tgt_io_thread_init(struct ptlrpc_thread *thread)
1363 struct tgt_thread_big_cache *tbc;
1367 LASSERT(thread != NULL);
1368 LASSERT(thread->t_data == NULL);
1370 OBD_ALLOC_LARGE(tbc, sizeof(*tbc));
1373 thread->t_data = tbc;
1376 EXPORT_SYMBOL(tgt_io_thread_init);
1379 * free per-thread pool created by tgt_thread_init().
1381 void tgt_io_thread_done(struct ptlrpc_thread *thread)
1383 struct tgt_thread_big_cache *tbc;
1387 LASSERT(thread != NULL);
1390 * be prepared to handle partially-initialized pools (because this is
1391 * called from ost_io_thread_init() for cleanup.
1393 tbc = thread->t_data;
1395 OBD_FREE_LARGE(tbc, sizeof(*tbc));
1396 thread->t_data = NULL;
1400 EXPORT_SYMBOL(tgt_io_thread_done);
1402 * Helper function for getting server side [start, start+count] DLM lock
1403 * if asked by client.
1405 int tgt_extent_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1406 __u64 start, __u64 end, struct lustre_handle *lh,
1407 int mode, __u64 *flags)
1409 ldlm_policy_data_t policy;
1414 LASSERT(lh != NULL);
1415 LASSERT(ns != NULL);
1416 LASSERT(!lustre_handle_is_used(lh));
1418 policy.l_extent.gid = 0;
1419 policy.l_extent.start = start & CFS_PAGE_MASK;
1422 * If ->o_blocks is EOF it means "lock till the end of the file".
1423 * Otherwise, it's size of an extent or hole being punched (in bytes).
1425 if (end == OBD_OBJECT_EOF || end < start)
1426 policy.l_extent.end = OBD_OBJECT_EOF;
1428 policy.l_extent.end = end | ~CFS_PAGE_MASK;
1430 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_EXTENT, &policy, mode,
1431 flags, ldlm_blocking_ast,
1432 ldlm_completion_ast, ldlm_glimpse_ast,
1433 NULL, 0, LVB_T_NONE, NULL, lh);
1434 RETURN(rc == ELDLM_OK ? 0 : -EIO);
1436 EXPORT_SYMBOL(tgt_extent_lock);
1438 void tgt_extent_unlock(struct lustre_handle *lh, ldlm_mode_t mode)
1440 LASSERT(lustre_handle_is_used(lh));
1441 ldlm_lock_decref(lh, mode);
1443 EXPORT_SYMBOL(tgt_extent_unlock);
1445 int tgt_brw_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1446 struct obd_ioobj *obj, struct niobuf_remote *nb,
1447 struct lustre_handle *lh, int mode)
1450 int nrbufs = obj->ioo_bufcnt;
1455 LASSERT(mode == LCK_PR || mode == LCK_PW);
1456 LASSERT(!lustre_handle_is_used(lh));
1458 if (nrbufs == 0 || !(nb[0].flags & OBD_BRW_SRVLOCK))
1461 for (i = 1; i < nrbufs; i++)
1462 if (!(nb[i].flags & OBD_BRW_SRVLOCK))
1465 RETURN(tgt_extent_lock(ns, res_id, nb[0].offset,
1466 nb[nrbufs - 1].offset + nb[nrbufs - 1].len - 1,
1469 EXPORT_SYMBOL(tgt_brw_lock);
1471 void tgt_brw_unlock(struct obd_ioobj *obj, struct niobuf_remote *niob,
1472 struct lustre_handle *lh, int mode)
1476 LASSERT(mode == LCK_PR || mode == LCK_PW);
1477 LASSERT((obj->ioo_bufcnt > 0 && (niob[0].flags & OBD_BRW_SRVLOCK)) ==
1478 lustre_handle_is_used(lh));
1479 if (lustre_handle_is_used(lh))
1480 tgt_extent_unlock(lh, mode);
1483 EXPORT_SYMBOL(tgt_brw_unlock);
1485 static __u32 tgt_checksum_bulk(struct lu_target *tgt,
1486 struct ptlrpc_bulk_desc *desc, int opc,
1487 cksum_type_t cksum_type)
1489 struct cfs_crypto_hash_desc *hdesc;
1490 unsigned int bufsize;
1492 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1495 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1496 if (IS_ERR(hdesc)) {
1497 CERROR("%s: unable to initialize checksum hash %s\n",
1498 tgt_name(tgt), cfs_crypto_hash_name(cfs_alg));
1499 return PTR_ERR(hdesc);
1502 CDEBUG(D_INFO, "Checksum for algo %s\n", cfs_crypto_hash_name(cfs_alg));
1503 for (i = 0; i < desc->bd_iov_count; i++) {
1504 /* corrupt the data before we compute the checksum, to
1505 * simulate a client->OST data error */
1506 if (i == 0 && opc == OST_WRITE &&
1507 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) {
1508 int off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
1509 int len = desc->bd_iov[i].kiov_len;
1510 struct page *np = tgt_page_to_corrupt;
1511 char *ptr = kmap(desc->bd_iov[i].kiov_page) + off;
1514 char *ptr2 = kmap(np) + off;
1516 memcpy(ptr2, ptr, len);
1517 memcpy(ptr2, "bad3", min(4, len));
1519 desc->bd_iov[i].kiov_page = np;
1521 CERROR("%s: can't alloc page for corruption\n",
1525 cfs_crypto_hash_update_page(hdesc, desc->bd_iov[i].kiov_page,
1526 desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK,
1527 desc->bd_iov[i].kiov_len);
1529 /* corrupt the data after we compute the checksum, to
1530 * simulate an OST->client data error */
1531 if (i == 0 && opc == OST_READ &&
1532 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND)) {
1533 int off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
1534 int len = desc->bd_iov[i].kiov_len;
1535 struct page *np = tgt_page_to_corrupt;
1536 char *ptr = kmap(desc->bd_iov[i].kiov_page) + off;
1539 char *ptr2 = kmap(np) + off;
1541 memcpy(ptr2, ptr, len);
1542 memcpy(ptr2, "bad4", min(4, len));
1544 desc->bd_iov[i].kiov_page = np;
1546 CERROR("%s: can't alloc page for corruption\n",
1553 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1555 cfs_crypto_hash_final(hdesc, NULL, NULL);
1560 int tgt_brw_read(struct tgt_session_info *tsi)
1562 struct ptlrpc_request *req = tgt_ses_req(tsi);
1563 struct ptlrpc_bulk_desc *desc = NULL;
1564 struct obd_export *exp = tsi->tsi_exp;
1565 struct niobuf_remote *remote_nb;
1566 struct niobuf_local *local_nb;
1567 struct obd_ioobj *ioo;
1568 struct ost_body *body, *repbody;
1569 struct l_wait_info lwi;
1570 struct lustre_handle lockh = { 0 };
1571 int niocount, npages, nob = 0, rc, i;
1573 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
1577 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
1578 CERROR("%s: deny read request from %s to portal %u\n",
1579 tgt_name(tsi->tsi_tgt),
1580 obd_export_nid2str(req->rq_export),
1581 ptlrpc_req2svc(req)->srv_req_portal);
1585 req->rq_bulk_read = 1;
1587 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
1590 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
1591 cfs_fail_val : (obd_timeout + 1) / 4);
1593 /* Check if there is eviction in progress, and if so, wait for it to
1595 if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
1596 /* We do not care how long it takes */
1597 lwi = LWI_INTR(NULL, NULL);
1598 rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
1599 !atomic_read(&exp->exp_obd->obd_evict_inprogress),
1603 /* There must be big cache in current thread to process this request
1604 * if it is NULL then something went wrong and it wasn't allocated,
1605 * report -ENOMEM in that case */
1609 body = tsi->tsi_ost_body;
1610 LASSERT(body != NULL);
1612 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
1613 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
1615 niocount = ioo->ioo_bufcnt;
1616 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
1617 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
1619 local_nb = tbc->local;
1621 rc = tgt_brw_lock(exp->exp_obd->obd_namespace, &tsi->tsi_resid, ioo,
1622 remote_nb, &lockh, LCK_PR);
1627 * If getting the lock took more time than
1628 * client was willing to wait, drop it. b=11330
1630 if (cfs_time_current_sec() > req->rq_deadline ||
1631 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
1633 CERROR("Dropping timed-out read from %s because locking"
1634 "object "DOSTID" took %ld seconds (limit was %ld).\n",
1635 libcfs_id2str(req->rq_peer), POSTID(&ioo->ioo_oid),
1636 cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
1637 req->rq_deadline - req->rq_arrival_time.tv_sec);
1638 GOTO(out_lock, rc = -ETIMEDOUT);
1641 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1642 repbody->oa = body->oa;
1644 npages = PTLRPC_MAX_BRW_PAGES;
1645 rc = obd_preprw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1,
1646 ioo, remote_nb, &npages, local_nb, NULL, BYPASS_CAPA);
1650 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
1651 BULK_PUT_SOURCE, OST_BULK_PORTAL);
1653 GOTO(out_commitrw, rc = -ENOMEM);
1656 for (i = 0; i < npages; i++) {
1657 int page_rc = local_nb[i].rc;
1665 if (page_rc != 0) { /* some data! */
1666 LASSERT(local_nb[i].page != NULL);
1667 ptlrpc_prep_bulk_page_nopin(desc, local_nb[i].page,
1668 local_nb[i].lnb_page_offset,
1672 if (page_rc != local_nb[i].len) { /* short read */
1673 /* All subsequent pages should be 0 */
1674 while (++i < npages)
1675 LASSERT(local_nb[i].rc == 0);
1680 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1681 cksum_type_t cksum_type =
1682 cksum_type_unpack(body->oa.o_valid & OBD_MD_FLFLAGS ?
1683 body->oa.o_flags : 0);
1684 repbody->oa.o_flags = cksum_type_pack(cksum_type);
1685 repbody->oa.o_valid = OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1686 repbody->oa.o_cksum = tgt_checksum_bulk(tsi->tsi_tgt, desc,
1687 OST_READ, cksum_type);
1688 CDEBUG(D_PAGE, "checksum at read origin: %x\n",
1689 repbody->oa.o_cksum);
1691 repbody->oa.o_valid = 0;
1693 /* We're finishing using body->oa as an input variable */
1695 /* Check if client was evicted while we were doing i/o before touching
1697 if (likely(rc == 0 &&
1698 !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
1699 rc = target_bulk_io(exp, desc, &lwi);
1704 /* Must commit after prep above in all cases */
1705 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_READ, exp,
1706 &repbody->oa, 1, ioo, remote_nb, npages, local_nb,
1709 tgt_drop_id(exp, &repbody->oa);
1711 tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PR);
1713 if (desc && !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))
1714 ptlrpc_free_bulk_nopin(desc);
1719 ptlrpc_lprocfs_brw(req, nob);
1720 } else if (no_reply) {
1721 req->rq_no_reply = 1;
1722 /* reply out callback would free */
1723 ptlrpc_req_drop_rs(req);
1724 LCONSOLE_WARN("%s: Bulk IO read error with %s (at %s), "
1725 "client will retry: rc %d\n",
1726 exp->exp_obd->obd_name,
1727 obd_uuid2str(&exp->exp_client_uuid),
1728 obd_export_nid2str(exp), rc);
1730 /* send a bulk after reply to simulate a network delay or reordering
1732 if (unlikely(CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
1733 wait_queue_head_t waitq;
1734 struct l_wait_info lwi1;
1736 CDEBUG(D_INFO, "reorder BULK\n");
1737 init_waitqueue_head(&waitq);
1739 lwi1 = LWI_TIMEOUT_INTR(cfs_time_seconds(3), NULL, NULL, NULL);
1740 l_wait_event(waitq, 0, &lwi1);
1741 target_bulk_io(exp, desc, &lwi);
1742 ptlrpc_free_bulk_nopin(desc);
1747 EXPORT_SYMBOL(tgt_brw_read);
1749 static void tgt_warn_on_cksum(struct ptlrpc_request *req,
1750 struct ptlrpc_bulk_desc *desc,
1751 struct niobuf_local *local_nb, int npages,
1752 obd_count client_cksum, obd_count server_cksum,
1755 struct obd_export *exp = req->rq_export;
1756 struct ost_body *body;
1760 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
1761 LASSERT(body != NULL);
1763 if (req->rq_peer.nid == desc->bd_sender) {
1767 router = libcfs_nid2str(desc->bd_sender);
1771 CDEBUG_LIMIT(D_INFO, "client csum %x, server csum %x\n",
1772 client_cksum, server_cksum);
1776 LCONSOLE_ERROR_MSG(0x168, "BAD WRITE CHECKSUM: %s from %s%s%s inode "
1777 DFID" object "DOSTID" extent ["LPU64"-"LPU64
1778 "]: client csum %x, server csum %x\n",
1779 exp->exp_obd->obd_name, libcfs_id2str(req->rq_peer),
1781 body->oa.o_valid & OBD_MD_FLFID ?
1782 body->oa.o_parent_seq : (__u64)0,
1783 body->oa.o_valid & OBD_MD_FLFID ?
1784 body->oa.o_parent_oid : 0,
1785 body->oa.o_valid & OBD_MD_FLFID ?
1786 body->oa.o_parent_ver : 0,
1787 POSTID(&body->oa.o_oi),
1788 local_nb[0].lnb_file_offset,
1789 local_nb[npages-1].lnb_file_offset +
1790 local_nb[npages-1].len - 1,
1791 client_cksum, server_cksum);
1794 int tgt_brw_write(struct tgt_session_info *tsi)
1796 struct ptlrpc_request *req = tgt_ses_req(tsi);
1797 struct ptlrpc_bulk_desc *desc = NULL;
1798 struct obd_export *exp = req->rq_export;
1799 struct niobuf_remote *remote_nb;
1800 struct niobuf_local *local_nb;
1801 struct obd_ioobj *ioo;
1802 struct ost_body *body, *repbody;
1803 struct l_wait_info lwi;
1804 struct lustre_handle lockh = {0};
1806 int objcount, niocount, npages;
1808 cksum_type_t cksum_type = OBD_CKSUM_CRC32;
1809 bool no_reply = false, mmap;
1810 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
1814 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
1815 CERROR("%s: deny write request from %s to portal %u\n",
1816 tgt_name(tsi->tsi_tgt),
1817 obd_export_nid2str(req->rq_export),
1818 ptlrpc_req2svc(req)->srv_req_portal);
1819 RETURN(err_serious(-EPROTO));
1822 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC))
1823 RETURN(err_serious(-ENOSPC));
1824 if (OBD_FAIL_TIMEOUT(OBD_FAIL_OST_EROFS, 1))
1825 RETURN(err_serious(-EROFS));
1827 req->rq_bulk_write = 1;
1829 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
1830 RETURN(err_serious(-EIO));
1831 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK2))
1832 RETURN(err_serious(-EFAULT));
1834 /* pause before transaction has been started */
1835 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
1836 cfs_fail_val : (obd_timeout + 1) / 4);
1838 /* There must be big cache in current thread to process this request
1839 * if it is NULL then something went wrong and it wasn't allocated,
1840 * report -ENOMEM in that case */
1844 body = tsi->tsi_ost_body;
1845 LASSERT(body != NULL);
1847 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
1848 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
1850 objcount = req_capsule_get_size(&req->rq_pill, &RMF_OBD_IOOBJ,
1851 RCL_CLIENT) / sizeof(*ioo);
1853 for (niocount = i = 0; i < objcount; i++)
1854 niocount += ioo[i].ioo_bufcnt;
1856 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
1857 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
1858 if (niocount != req_capsule_get_size(&req->rq_pill,
1859 &RMF_NIOBUF_REMOTE, RCL_CLIENT) /
1861 RETURN(err_serious(-EPROTO));
1863 if ((remote_nb[0].flags & OBD_BRW_MEMALLOC) &&
1864 (exp->exp_connection->c_peer.nid == exp->exp_connection->c_self))
1865 memory_pressure_set();
1867 req_capsule_set_size(&req->rq_pill, &RMF_RCS, RCL_SERVER,
1868 niocount * sizeof(*rcs));
1869 rc = req_capsule_server_pack(&req->rq_pill);
1871 GOTO(out, rc = err_serious(rc));
1873 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_PACK, cfs_fail_val);
1874 rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
1876 local_nb = tbc->local;
1878 rc = tgt_brw_lock(exp->exp_obd->obd_namespace, &tsi->tsi_resid, ioo,
1879 remote_nb, &lockh, LCK_PW);
1884 * If getting the lock took more time than
1885 * client was willing to wait, drop it. b=11330
1887 if (cfs_time_current_sec() > req->rq_deadline ||
1888 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
1890 CERROR("%s: Dropping timed-out write from %s because locking "
1891 "object "DOSTID" took %ld seconds (limit was %ld).\n",
1892 tgt_name(tsi->tsi_tgt), libcfs_id2str(req->rq_peer),
1893 POSTID(&ioo->ioo_oid),
1894 cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
1895 req->rq_deadline - req->rq_arrival_time.tv_sec);
1896 GOTO(out_lock, rc = -ETIMEDOUT);
1899 /* Because we already sync grant info with client when reconnect,
1900 * grant info will be cleared for resent req, then fed_grant and
1901 * total_grant will not be modified in following preprw_write */
1902 if (lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) {
1903 DEBUG_REQ(D_CACHE, req, "clear resent/replay req grant info");
1904 body->oa.o_valid &= ~OBD_MD_FLGRANT;
1907 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1908 if (repbody == NULL)
1909 GOTO(out_lock, rc = -ENOMEM);
1910 repbody->oa = body->oa;
1912 npages = PTLRPC_MAX_BRW_PAGES;
1913 rc = obd_preprw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
1914 objcount, ioo, remote_nb, &npages, local_nb, NULL,
1919 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
1920 BULK_GET_SINK, OST_BULK_PORTAL);
1922 GOTO(skip_transfer, rc = -ENOMEM);
1924 /* NB Having prepped, we must commit... */
1925 for (i = 0; i < npages; i++)
1926 ptlrpc_prep_bulk_page_nopin(desc, local_nb[i].page,
1927 local_nb[i].lnb_page_offset,
1930 rc = sptlrpc_svc_prep_bulk(req, desc);
1932 GOTO(skip_transfer, rc);
1934 rc = target_bulk_io(exp, desc, &lwi);
1938 if (body->oa.o_valid & OBD_MD_FLCKSUM && rc == 0) {
1939 static int cksum_counter;
1941 if (body->oa.o_valid & OBD_MD_FLFLAGS)
1942 cksum_type = cksum_type_unpack(body->oa.o_flags);
1944 repbody->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1945 repbody->oa.o_flags &= ~OBD_FL_CKSUM_ALL;
1946 repbody->oa.o_flags |= cksum_type_pack(cksum_type);
1947 repbody->oa.o_cksum = tgt_checksum_bulk(tsi->tsi_tgt, desc,
1948 OST_WRITE, cksum_type);
1951 if (unlikely(body->oa.o_cksum != repbody->oa.o_cksum)) {
1952 mmap = (body->oa.o_valid & OBD_MD_FLFLAGS &&
1953 body->oa.o_flags & OBD_FL_MMAP);
1955 tgt_warn_on_cksum(req, desc, local_nb, npages,
1957 repbody->oa.o_cksum, mmap);
1959 } else if ((cksum_counter & (-cksum_counter)) ==
1961 CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n",
1962 cksum_counter, libcfs_id2str(req->rq_peer),
1963 repbody->oa.o_cksum);
1967 /* Must commit after prep above in all cases */
1968 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
1969 objcount, ioo, remote_nb, npages, local_nb, NULL,
1971 if (rc == -ENOTCONN)
1972 /* quota acquire process has been given up because
1973 * either the client has been evicted or the client
1974 * has timed out the request already */
1978 * Disable sending mtime back to the client. If the client locked the
1979 * whole object, then it has already updated the mtime on its side,
1980 * otherwise it will have to glimpse anyway (see bug 21489, comment 32)
1982 repbody->oa.o_valid &= ~(OBD_MD_FLMTIME | OBD_MD_FLATIME);
1987 /* set per-requested niobuf return codes */
1988 for (i = j = 0; i < niocount; i++) {
1989 int len = remote_nb[i].len;
1994 LASSERT(j < npages);
1995 if (local_nb[j].rc < 0)
1996 rcs[i] = local_nb[j].rc;
1997 len -= local_nb[j].len;
2002 LASSERT(j == npages);
2003 ptlrpc_lprocfs_brw(req, nob);
2005 tgt_drop_id(exp, &repbody->oa);
2008 tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PW);
2010 ptlrpc_free_bulk_nopin(desc);
2013 req->rq_no_reply = 1;
2014 /* reply out callback would free */
2015 ptlrpc_req_drop_rs(req);
2016 LCONSOLE_WARN("%s: Bulk IO write error with %s (at %s), "
2017 "client will retry: rc %d\n",
2018 exp->exp_obd->obd_name,
2019 obd_uuid2str(&exp->exp_client_uuid),
2020 obd_export_nid2str(exp), rc);
2022 memory_pressure_clr();
2025 EXPORT_SYMBOL(tgt_brw_write);