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>
40 #include <md_object.h>
41 #include <lustre_lfsck.h>
42 #include <lustre_nodemap.h>
44 #include "tgt_internal.h"
46 char *tgt_name(struct lu_target *tgt)
48 LASSERT(tgt->lut_obd != NULL);
49 return tgt->lut_obd->obd_name;
51 EXPORT_SYMBOL(tgt_name);
54 * Generic code handling requests that have struct mdt_body passed in:
56 * - extract mdt_body from request and save it in @tsi, if present;
58 * - create lu_object, corresponding to the fid in mdt_body, and save it in
61 * - if HABEO_CORPUS flag is set for this request type check whether object
62 * actually exists on storage (lu_object_exists()).
65 static int tgt_mdt_body_unpack(struct tgt_session_info *tsi, __u32 flags)
67 const struct mdt_body *body;
68 struct lu_object *obj;
69 struct req_capsule *pill = tsi->tsi_pill;
74 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
78 tsi->tsi_mdt_body = body;
80 if (!(body->mbo_valid & OBD_MD_FLID))
83 /* mdc_pack_body() doesn't check if fid is zero and set OBD_ML_FID
84 * in any case in pre-2.5 clients. Fix that here if needed */
85 if (unlikely(fid_is_zero(&body->mbo_fid1)))
88 if (!fid_is_sane(&body->mbo_fid1)) {
89 CERROR("%s: invalid FID: "DFID"\n", tgt_name(tsi->tsi_tgt),
90 PFID(&body->mbo_fid1));
94 obj = lu_object_find(tsi->tsi_env,
95 &tsi->tsi_tgt->lut_bottom->dd_lu_dev,
96 &body->mbo_fid1, NULL);
98 if ((flags & HABEO_CORPUS) && !lu_object_exists(obj)) {
99 lu_object_put(tsi->tsi_env, obj);
100 /* for capability renew ENOENT will be handled in
102 if (body->mbo_valid & OBD_MD_FLOSSCAPA)
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 obd_seq seq = ostid_seq(oi);
138 obd_id 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 lustre_capa *capa;
246 struct lu_nodemap *nodemap;
251 body = req_capsule_client_get(pill, &RMF_OST_BODY);
255 rc = tgt_validate_obdo(tsi, &body->oa);
259 nodemap = tsi->tsi_exp->exp_target_data.ted_nodemap;
261 body->oa.o_uid = nodemap_map_id(nodemap, NODEMAP_UID,
262 NODEMAP_CLIENT_TO_FS,
264 body->oa.o_gid = nodemap_map_id(nodemap, NODEMAP_GID,
265 NODEMAP_CLIENT_TO_FS,
268 if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
269 capa = req_capsule_client_get(pill, &RMF_CAPA1);
271 CERROR("%s: OSSCAPA flag is set without capability\n",
272 tgt_name(tsi->tsi_tgt));
277 tsi->tsi_ost_body = body;
278 tsi->tsi_fid = body->oa.o_oi.oi_fid;
280 if (req_capsule_has_field(pill, &RMF_OBD_IOOBJ, RCL_CLIENT)) {
281 rc = tgt_io_data_unpack(tsi, &body->oa.o_oi);
286 if (!(body->oa.o_valid & OBD_MD_FLID)) {
287 if (flags & HABEO_CORPUS) {
288 CERROR("%s: OBD_MD_FLID flag is not set in ost_body "
289 "but OID/FID is mandatory with HABEO_CORPUS\n",
290 tgt_name(tsi->tsi_tgt));
297 ost_fid_build_resid(&tsi->tsi_fid, &tsi->tsi_resid);
300 * OST doesn't get object in advance for further use to prevent
301 * situations with nested object_find which is potential deadlock.
303 tsi->tsi_corpus = NULL;
308 * Do necessary preprocessing according to handler ->th_flags.
310 static int tgt_request_preprocess(struct tgt_session_info *tsi,
311 struct tgt_handler *h,
312 struct ptlrpc_request *req)
314 struct req_capsule *pill = tsi->tsi_pill;
315 __u32 flags = h->th_flags;
320 if (tsi->tsi_preprocessed)
323 LASSERT(h->th_act != NULL);
324 LASSERT(h->th_opc == lustre_msg_get_opc(req->rq_reqmsg));
325 LASSERT(current->journal_info == NULL);
327 LASSERT(ergo(flags & (HABEO_CORPUS | HABEO_REFERO),
329 if (h->th_fmt != NULL) {
330 req_capsule_set(pill, h->th_fmt);
331 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT)) {
332 rc = tgt_mdt_body_unpack(tsi, flags);
335 } else if (req_capsule_has_field(pill, &RMF_OST_BODY,
337 rc = tgt_ost_body_unpack(tsi, flags);
343 if (flags & MUTABOR && tgt_conn_flags(tsi) & OBD_CONNECT_RDONLY)
346 if (flags & HABEO_CLAVIS) {
347 struct ldlm_request *dlm_req;
349 LASSERT(h->th_fmt != NULL);
351 dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
352 if (dlm_req != NULL) {
353 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
355 dlm_req->lock_desc.l_policy_data.\
356 l_inodebits.bits == 0)) {
358 * Lock without inodebits makes no sense and
359 * will oops later in ldlm. If client miss to
360 * set such bits, do not trigger ASSERTION.
362 * For liblustre flock case, it maybe zero.
366 tsi->tsi_dlm_req = dlm_req;
372 tsi->tsi_preprocessed = 1;
377 * Invoke handler for this request opc. Also do necessary preprocessing
378 * (according to handler ->th_flags), and post-processing (setting of
379 * ->last_{xid,committed}).
381 static int tgt_handle_request0(struct tgt_session_info *tsi,
382 struct tgt_handler *h,
383 struct ptlrpc_request *req)
391 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
392 * to put same checks into handlers like mdt_close(), mdt_reint(),
393 * etc., without talking to mdt authors first. Checking same thing
394 * there again is useless and returning 0 error without packing reply
395 * is buggy! Handlers either pack reply or return error.
397 * We return 0 here and do not send any reply in order to emulate
398 * network failure. Do not send any reply in case any of NET related
399 * fail_id has occured.
401 if (OBD_FAIL_CHECK_ORSET(h->th_fail_id, OBD_FAIL_ONCE))
404 rc = tgt_request_preprocess(tsi, h, req);
405 /* pack reply if reply format is fixed */
406 if (rc == 0 && h->th_flags & HABEO_REFERO) {
408 if (req_capsule_has_field(tsi->tsi_pill, &RMF_MDT_MD,
410 req_capsule_set_size(tsi->tsi_pill, &RMF_MDT_MD,
412 tsi->tsi_mdt_body->mbo_eadatasize);
413 if (req_capsule_has_field(tsi->tsi_pill, &RMF_LOGCOOKIES,
415 req_capsule_set_size(tsi->tsi_pill, &RMF_LOGCOOKIES,
418 rc = req_capsule_server_pack(tsi->tsi_pill);
421 if (likely(rc == 0)) {
423 * Process request, there can be two types of rc:
424 * 1) errors with msg unpack/pack, other failures outside the
425 * operation itself. This is counted as serious errors;
426 * 2) errors during fs operation, should be placed in rq_status
430 if (!is_serious(rc) &&
431 !req->rq_no_reply && req->rq_reply_state == NULL) {
432 DEBUG_REQ(D_ERROR, req, "%s \"handler\" %s did not "
433 "pack reply and returned 0 error\n",
434 tgt_name(tsi->tsi_tgt), h->th_name);
437 serious = is_serious(rc);
438 rc = clear_serious(rc);
446 * ELDLM_* codes which > 0 should be in rq_status only as well as
447 * all non-serious errors.
449 if (rc > 0 || !serious)
452 LASSERT(current->journal_info == NULL);
454 if (likely(rc == 0 && req->rq_export))
455 target_committed_to_req(req);
457 target_send_reply(req, rc, tsi->tsi_reply_fail_id);
461 static int tgt_filter_recovery_request(struct ptlrpc_request *req,
462 struct obd_device *obd, int *process)
464 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
471 case MDS_DONE_WRITING:
472 case MDS_SYNC: /* used in unmounting */
485 *process = target_queue_recovery_request(req, obd);
489 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
496 * Handle recovery. Return:
497 * +1: continue request processing;
498 * -ve: abort immediately with the given error code;
499 * 0: send reply with error code in req->rq_status;
501 int tgt_handle_recovery(struct ptlrpc_request *req, int reply_fail_id)
505 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
510 case SEC_CTX_INIT_CONT:
515 if (!req->rq_export->exp_obd->obd_replayable)
518 /* sanity check: if the xid matches, the request must be marked as a
519 * resent or replayed */
520 if (req_xid_is_last(req)) {
521 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
522 (MSG_RESENT | MSG_REPLAY))) {
523 DEBUG_REQ(D_WARNING, req, "rq_xid "LPU64" matches "
524 "last_xid, expected REPLAY or RESENT flag "
526 lustre_msg_get_flags(req->rq_reqmsg));
527 req->rq_status = -ENOTCONN;
531 /* else: note the opposite is not always true; a RESENT req after a
532 * failover will usually not match the last_xid, since it was likely
533 * never committed. A REPLAYed request will almost never match the
534 * last xid, however it could for a committed, but still retained,
537 /* Check for aborted recovery... */
538 if (unlikely(req->rq_export->exp_obd->obd_recovering)) {
542 DEBUG_REQ(D_INFO, req, "Got new replay");
543 rc = tgt_filter_recovery_request(req, req->rq_export->exp_obd,
545 if (rc != 0 || !should_process)
547 else if (should_process < 0) {
548 req->rq_status = should_process;
549 rc = ptlrpc_error(req);
556 /* Initial check for request, it is validation mostly */
557 static struct tgt_handler *tgt_handler_find_check(struct ptlrpc_request *req)
559 struct tgt_handler *h;
560 struct tgt_opc_slice *s;
561 struct lu_target *tgt;
562 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
566 tgt = class_exp2tgt(req->rq_export);
568 for (s = tgt->lut_slice; s->tos_hs != NULL; s++)
569 if (s->tos_opc_start <= opc && opc < s->tos_opc_end)
572 /* opcode was not found in slice */
573 if (unlikely(s->tos_hs == NULL)) {
574 CERROR("%s: no handlers for opcode 0x%x\n", tgt_name(tgt),
576 RETURN(ERR_PTR(-ENOTSUPP));
579 LASSERT(opc >= s->tos_opc_start && opc < s->tos_opc_end);
580 h = s->tos_hs + (opc - s->tos_opc_start);
581 if (unlikely(h->th_opc == 0)) {
582 CERROR("%s: unsupported opcode 0x%x\n", tgt_name(tgt), opc);
583 RETURN(ERR_PTR(-ENOTSUPP));
589 int tgt_request_handle(struct ptlrpc_request *req)
591 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
593 struct lustre_msg *msg = req->rq_reqmsg;
594 struct tgt_handler *h;
595 struct lu_target *tgt;
596 int request_fail_id = 0;
597 __u32 opc = lustre_msg_get_opc(msg);
602 /* Refill the context, to make sure all thread keys are allocated */
603 lu_env_refill(req->rq_svc_thread->t_env);
605 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
606 tsi->tsi_pill = &req->rq_pill;
607 tsi->tsi_env = req->rq_svc_thread->t_env;
609 /* if request has export then get handlers slice from corresponding
610 * target, otherwise that should be connect operation */
611 if (opc == MDS_CONNECT || opc == OST_CONNECT ||
612 opc == MGS_CONNECT) {
613 req_capsule_set(&req->rq_pill, &RQF_CONNECT);
614 rc = target_handle_connect(req);
616 rc = ptlrpc_error(req);
619 /* recovery-small test 18c asks to drop connect reply */
620 if (unlikely(opc == OST_CONNECT &&
621 OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET2)))
625 if (unlikely(!class_connected_export(req->rq_export))) {
626 CDEBUG(D_HA, "operation %d on unconnected OST from %s\n",
627 opc, libcfs_id2str(req->rq_peer));
628 req->rq_status = -ENOTCONN;
629 rc = ptlrpc_error(req);
633 tsi->tsi_tgt = tgt = class_exp2tgt(req->rq_export);
634 tsi->tsi_exp = req->rq_export;
635 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_JOBSTATS)
636 tsi->tsi_jobid = lustre_msg_get_jobid(req->rq_reqmsg);
638 tsi->tsi_jobid = NULL;
640 request_fail_id = tgt->lut_request_fail_id;
641 tsi->tsi_reply_fail_id = tgt->lut_reply_fail_id;
643 h = tgt_handler_find_check(req);
645 req->rq_status = PTR_ERR(h);
646 rc = ptlrpc_error(req);
650 if (CFS_FAIL_CHECK_ORSET(request_fail_id, CFS_FAIL_ONCE))
653 rc = lustre_msg_check_version(msg, h->th_version);
655 DEBUG_REQ(D_ERROR, req, "%s: drop mal-formed request, version"
656 " %08x, expecting %08x\n", tgt_name(tgt),
657 lustre_msg_get_version(msg), h->th_version);
658 req->rq_status = -EINVAL;
659 rc = ptlrpc_error(req);
663 rc = tgt_handle_recovery(req, tsi->tsi_reply_fail_id);
664 if (likely(rc == 1)) {
665 LASSERTF(h->th_opc == opc, "opcode mismatch %d != %d\n",
667 rc = tgt_handle_request0(tsi, h, req);
673 req_capsule_fini(tsi->tsi_pill);
674 if (tsi->tsi_corpus != NULL) {
675 lu_object_put(tsi->tsi_env, tsi->tsi_corpus);
676 tsi->tsi_corpus = NULL;
680 EXPORT_SYMBOL(tgt_request_handle);
682 /** Assign high priority operations to the request if needed. */
683 int tgt_hpreq_handler(struct ptlrpc_request *req)
685 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
686 struct tgt_handler *h;
691 if (req->rq_export == NULL)
694 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
695 tsi->tsi_pill = &req->rq_pill;
696 tsi->tsi_env = req->rq_svc_thread->t_env;
697 tsi->tsi_tgt = class_exp2tgt(req->rq_export);
698 tsi->tsi_exp = req->rq_export;
700 h = tgt_handler_find_check(req);
706 rc = tgt_request_preprocess(tsi, h, req);
707 if (unlikely(rc != 0))
710 if (h->th_hp != NULL)
714 EXPORT_SYMBOL(tgt_hpreq_handler);
716 void tgt_counter_incr(struct obd_export *exp, int opcode)
718 lprocfs_counter_incr(exp->exp_obd->obd_stats, opcode);
719 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_stats != NULL)
720 lprocfs_counter_incr(exp->exp_nid_stats->nid_stats, opcode);
722 EXPORT_SYMBOL(tgt_counter_incr);
725 * Unified target generic handlers.
731 static inline void tgt_init_sec_none(struct obd_connect_data *reply)
733 reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |
734 OBD_CONNECT_RMT_CLIENT_FORCE |
735 OBD_CONNECT_MDS_CAPA |
736 OBD_CONNECT_OSS_CAPA);
739 static int tgt_init_sec_level(struct ptlrpc_request *req)
741 struct lu_target *tgt = class_exp2tgt(req->rq_export);
742 char *client = libcfs_nid2str(req->rq_peer.nid);
743 struct obd_connect_data *data, *reply;
749 data = req_capsule_client_get(&req->rq_pill, &RMF_CONNECT_DATA);
750 reply = req_capsule_server_get(&req->rq_pill, &RMF_CONNECT_DATA);
751 if (data == NULL || reply == NULL)
754 /* connection from MDT is always trusted */
755 if (req->rq_auth_usr_mdt) {
756 tgt_init_sec_none(reply);
760 /* no GSS support case */
761 if (!req->rq_auth_gss) {
762 if (tgt->lut_sec_level > LUSTRE_SEC_NONE) {
763 CWARN("client %s -> target %s does not use GSS, "
764 "can not run under security level %d.\n",
765 client, tgt_name(tgt), tgt->lut_sec_level);
768 tgt_init_sec_none(reply);
773 /* old version case */
774 if (unlikely(!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) ||
775 !(data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) ||
776 !(data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA))) {
777 if (tgt->lut_sec_level > LUSTRE_SEC_NONE) {
778 CWARN("client %s -> target %s uses old version, "
779 "can not run under security level %d.\n",
780 client, tgt_name(tgt), tgt->lut_sec_level);
783 CWARN("client %s -> target %s uses old version, "
784 "run under security level %d.\n",
785 client, tgt_name(tgt), tgt->lut_sec_level);
786 tgt_init_sec_none(reply);
791 remote = data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT_FORCE;
793 if (!req->rq_auth_remote)
794 CDEBUG(D_SEC, "client (local realm) %s -> target %s "
795 "asked to be remote.\n", client, tgt_name(tgt));
796 } else if (req->rq_auth_remote) {
798 CDEBUG(D_SEC, "client (remote realm) %s -> target %s is set "
799 "as remote by default.\n", client, tgt_name(tgt));
803 if (!tgt->lut_oss_capa) {
805 "client %s -> target %s is set as remote,"
806 " but OSS capabilities are not enabled: %d.\n",
807 client, tgt_name(tgt), tgt->lut_oss_capa);
811 if (!uid_valid(make_kuid(&init_user_ns, req->rq_auth_uid))) {
812 CDEBUG(D_SEC, "client %s -> target %s: user is not "
813 "authenticated!\n", client, tgt_name(tgt));
819 switch (tgt->lut_sec_level) {
820 case LUSTRE_SEC_NONE:
823 "client %s -> target %s is set as remote, "
824 "can not run under security level %d.\n",
825 client, tgt_name(tgt), tgt->lut_sec_level);
828 tgt_init_sec_none(reply);
830 case LUSTRE_SEC_REMOTE:
832 tgt_init_sec_none(reply);
837 reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |
838 OBD_CONNECT_RMT_CLIENT_FORCE);
839 if (!tgt->lut_oss_capa)
840 reply->ocd_connect_flags &= ~OBD_CONNECT_OSS_CAPA;
841 if (!tgt->lut_mds_capa)
842 reply->ocd_connect_flags &= ~OBD_CONNECT_MDS_CAPA;
851 int tgt_connect_check_sptlrpc(struct ptlrpc_request *req, struct obd_export *exp)
853 struct lu_target *tgt = class_exp2tgt(exp);
854 struct sptlrpc_flavor flvr;
858 LASSERT(tgt->lut_obd);
859 LASSERT(tgt->lut_slice);
861 /* always allow ECHO client */
862 if (unlikely(strcmp(exp->exp_obd->obd_type->typ_name,
863 LUSTRE_ECHO_NAME) == 0)) {
864 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
868 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
869 read_lock(&tgt->lut_sptlrpc_lock);
870 sptlrpc_target_choose_flavor(&tgt->lut_sptlrpc_rset,
874 read_unlock(&tgt->lut_sptlrpc_lock);
876 spin_lock(&exp->exp_lock);
877 exp->exp_sp_peer = req->rq_sp_from;
878 exp->exp_flvr = flvr;
879 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
880 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
881 CERROR("%s: unauthorized rpc flavor %x from %s, "
882 "expect %x\n", tgt_name(tgt),
884 libcfs_nid2str(req->rq_peer.nid),
885 exp->exp_flvr.sf_rpc);
888 spin_unlock(&exp->exp_lock);
890 if (exp->exp_sp_peer != req->rq_sp_from) {
891 CERROR("%s: RPC source %s doesn't match %s\n",
893 sptlrpc_part2name(req->rq_sp_from),
894 sptlrpc_part2name(exp->exp_sp_peer));
897 rc = sptlrpc_target_export_check(exp, req);
904 int tgt_adapt_sptlrpc_conf(struct lu_target *tgt, int initial)
906 struct sptlrpc_rule_set tmp_rset;
909 sptlrpc_rule_set_init(&tmp_rset);
910 rc = sptlrpc_conf_target_get_rules(tgt->lut_obd, &tmp_rset, initial);
912 CERROR("%s: failed get sptlrpc rules: rc = %d\n",
917 sptlrpc_target_update_exp_flavor(tgt->lut_obd, &tmp_rset);
919 write_lock(&tgt->lut_sptlrpc_lock);
920 sptlrpc_rule_set_free(&tgt->lut_sptlrpc_rset);
921 tgt->lut_sptlrpc_rset = tmp_rset;
922 write_unlock(&tgt->lut_sptlrpc_lock);
926 EXPORT_SYMBOL(tgt_adapt_sptlrpc_conf);
928 int tgt_connect(struct tgt_session_info *tsi)
930 struct ptlrpc_request *req = tgt_ses_req(tsi);
931 struct obd_connect_data *reply;
936 rc = tgt_init_sec_level(req);
940 /* XXX: better to call this check right after getting new export but
941 * before last_rcvd slot allocation to avoid server load upon insecure
942 * connects. This is to be fixed after unifiyng all targets.
944 rc = tgt_connect_check_sptlrpc(req, tsi->tsi_exp);
948 /* To avoid exposing partially initialized connection flags, changes up
949 * to this point have been staged in reply->ocd_connect_flags. Now that
950 * connection handling has completed successfully, atomically update
951 * the connect flags in the shared export data structure. LU-1623 */
952 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_CONNECT_DATA);
953 spin_lock(&tsi->tsi_exp->exp_lock);
954 *exp_connect_flags_ptr(tsi->tsi_exp) = reply->ocd_connect_flags;
955 tsi->tsi_exp->exp_connect_data.ocd_brw_size = reply->ocd_brw_size;
956 spin_unlock(&tsi->tsi_exp->exp_lock);
960 obd_disconnect(class_export_get(tsi->tsi_exp));
963 EXPORT_SYMBOL(tgt_connect);
965 int tgt_disconnect(struct tgt_session_info *tsi)
971 rc = target_handle_disconnect(tgt_ses_req(tsi));
973 RETURN(err_serious(rc));
977 EXPORT_SYMBOL(tgt_disconnect);
980 * Unified target OBD handlers
982 int tgt_obd_ping(struct tgt_session_info *tsi)
988 rc = target_handle_ping(tgt_ses_req(tsi));
990 RETURN(err_serious(rc));
994 EXPORT_SYMBOL(tgt_obd_ping);
996 int tgt_obd_log_cancel(struct tgt_session_info *tsi)
998 return err_serious(-EOPNOTSUPP);
1000 EXPORT_SYMBOL(tgt_obd_log_cancel);
1002 int tgt_obd_qc_callback(struct tgt_session_info *tsi)
1004 return err_serious(-EOPNOTSUPP);
1006 EXPORT_SYMBOL(tgt_obd_qc_callback);
1008 int tgt_sendpage(struct tgt_session_info *tsi, struct lu_rdpg *rdpg, int nob)
1010 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1011 struct ptlrpc_request *req = tgt_ses_req(tsi);
1012 struct obd_export *exp = req->rq_export;
1013 struct ptlrpc_bulk_desc *desc;
1014 struct l_wait_info *lwi = &tti->tti_u.rdpg.tti_wait_info;
1022 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, 1, BULK_PUT_SOURCE,
1027 if (!(exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE))
1028 /* old client requires reply size in it's PAGE_CACHE_SIZE,
1029 * which is rdpg->rp_count */
1030 nob = rdpg->rp_count;
1032 for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
1033 i++, tmpcount -= tmpsize) {
1034 tmpsize = min_t(int, tmpcount, PAGE_CACHE_SIZE);
1035 ptlrpc_prep_bulk_page_pin(desc, rdpg->rp_pages[i], 0, tmpsize);
1038 LASSERT(desc->bd_nob == nob);
1039 rc = target_bulk_io(exp, desc, lwi);
1040 ptlrpc_free_bulk_pin(desc);
1043 EXPORT_SYMBOL(tgt_sendpage);
1046 * OBD_IDX_READ handler
1048 int tgt_obd_idx_read(struct tgt_session_info *tsi)
1050 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1051 struct lu_rdpg *rdpg = &tti->tti_u.rdpg.tti_rdpg;
1052 struct idx_info *req_ii, *rep_ii;
1057 memset(rdpg, 0, sizeof(*rdpg));
1058 req_capsule_set(tsi->tsi_pill, &RQF_OBD_IDX_READ);
1060 /* extract idx_info buffer from request & reply */
1061 req_ii = req_capsule_client_get(tsi->tsi_pill, &RMF_IDX_INFO);
1062 if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
1063 RETURN(err_serious(-EPROTO));
1065 rc = req_capsule_server_pack(tsi->tsi_pill);
1067 RETURN(err_serious(rc));
1069 rep_ii = req_capsule_server_get(tsi->tsi_pill, &RMF_IDX_INFO);
1071 RETURN(err_serious(-EFAULT));
1072 rep_ii->ii_magic = IDX_INFO_MAGIC;
1074 /* extract hash to start with */
1075 rdpg->rp_hash = req_ii->ii_hash_start;
1077 /* extract requested attributes */
1078 rdpg->rp_attrs = req_ii->ii_attrs;
1080 /* check that fid packed in request is valid and supported */
1081 if (!fid_is_sane(&req_ii->ii_fid))
1083 rep_ii->ii_fid = req_ii->ii_fid;
1086 rep_ii->ii_flags = req_ii->ii_flags;
1088 /* compute number of pages to allocate, ii_count is the number of 4KB
1090 if (req_ii->ii_count <= 0)
1091 GOTO(out, rc = -EFAULT);
1092 rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
1093 exp_max_brw_size(tsi->tsi_exp));
1094 rdpg->rp_npages = (rdpg->rp_count + PAGE_CACHE_SIZE -1) >> PAGE_CACHE_SHIFT;
1096 /* allocate pages to store the containers */
1097 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
1098 if (rdpg->rp_pages == NULL)
1099 GOTO(out, rc = -ENOMEM);
1100 for (i = 0; i < rdpg->rp_npages; i++) {
1101 rdpg->rp_pages[i] = alloc_page(GFP_IOFS);
1102 if (rdpg->rp_pages[i] == NULL)
1103 GOTO(out, rc = -ENOMEM);
1106 /* populate pages with key/record pairs */
1107 rc = dt_index_read(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, rep_ii, rdpg);
1111 LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
1112 "asked %d > %d\n", rc, rdpg->rp_count);
1114 /* send pages to client */
1115 rc = tgt_sendpage(tsi, rdpg, rc);
1120 if (rdpg->rp_pages) {
1121 for (i = 0; i < rdpg->rp_npages; i++)
1122 if (rdpg->rp_pages[i])
1123 __free_page(rdpg->rp_pages[i]);
1124 OBD_FREE(rdpg->rp_pages,
1125 rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
1129 EXPORT_SYMBOL(tgt_obd_idx_read);
1131 struct tgt_handler tgt_obd_handlers[] = {
1132 TGT_OBD_HDL (0, OBD_PING, tgt_obd_ping),
1133 TGT_OBD_HDL_VAR(0, OBD_LOG_CANCEL, tgt_obd_log_cancel),
1134 TGT_OBD_HDL_VAR(0, OBD_QC_CALLBACK, tgt_obd_qc_callback),
1135 TGT_OBD_HDL (0, OBD_IDX_READ, tgt_obd_idx_read)
1137 EXPORT_SYMBOL(tgt_obd_handlers);
1139 int tgt_sync(const struct lu_env *env, struct lu_target *tgt,
1140 struct dt_object *obj, __u64 start, __u64 end)
1146 /* if no objid is specified, it means "sync whole filesystem" */
1148 rc = dt_sync(env, tgt->lut_bottom);
1149 } else if (dt_version_get(env, obj) >
1150 tgt->lut_obd->obd_last_committed) {
1151 rc = dt_object_sync(env, obj, start, end);
1156 EXPORT_SYMBOL(tgt_sync);
1158 * Unified target DLM handlers.
1161 /* Ensure that data and metadata are synced to the disk when lock is cancelled
1163 int tgt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1164 void *data, int flag)
1167 struct lu_target *tgt;
1168 struct dt_object *obj;
1174 tgt = class_exp2tgt(lock->l_export);
1176 if (flag == LDLM_CB_CANCELING &&
1177 (lock->l_granted_mode & (LCK_PW | LCK_GROUP)) &&
1178 (tgt->lut_sync_lock_cancel == ALWAYS_SYNC_ON_CANCEL ||
1179 (tgt->lut_sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL &&
1180 lock->l_flags & LDLM_FL_CBPENDING))) {
1182 __u64 end = OBD_OBJECT_EOF;
1184 rc = lu_env_init(&env, LCT_DT_THREAD);
1185 if (unlikely(rc != 0))
1188 ost_fid_from_resid(&fid, &lock->l_resource->lr_name,
1189 tgt->lut_lsd.lsd_osd_index);
1190 obj = dt_locate(&env, tgt->lut_bottom, &fid);
1192 GOTO(err_env, rc = PTR_ERR(obj));
1194 if (!dt_object_exists(obj))
1195 GOTO(err_put, rc = -ENOENT);
1197 if (lock->l_resource->lr_type == LDLM_EXTENT) {
1198 start = lock->l_policy_data.l_extent.start;
1199 end = lock->l_policy_data.l_extent.end;
1202 rc = tgt_sync(&env, tgt, obj, start, end);
1204 CERROR("%s: syncing "DFID" ("LPU64"-"LPU64") on lock "
1205 "cancel: rc = %d\n",
1206 tgt_name(tgt), PFID(&fid),
1207 lock->l_policy_data.l_extent.start,
1208 lock->l_policy_data.l_extent.end, rc);
1211 lu_object_put(&env, &obj->do_lu);
1216 rc = ldlm_server_blocking_ast(lock, desc, data, flag);
1220 struct ldlm_callback_suite tgt_dlm_cbs = {
1221 .lcs_completion = ldlm_server_completion_ast,
1222 .lcs_blocking = tgt_blocking_ast,
1223 .lcs_glimpse = ldlm_server_glimpse_ast
1226 int tgt_enqueue(struct tgt_session_info *tsi)
1228 struct ptlrpc_request *req = tgt_ses_req(tsi);
1233 * tsi->tsi_dlm_req was already swapped and (if necessary) converted,
1234 * tsi->tsi_dlm_cbs was set by the *_req_handle() function.
1236 LASSERT(tsi->tsi_dlm_req != NULL);
1237 rc = ldlm_handle_enqueue0(tsi->tsi_exp->exp_obd->obd_namespace, req,
1238 tsi->tsi_dlm_req, &tgt_dlm_cbs);
1240 RETURN(err_serious(rc));
1242 RETURN(req->rq_status);
1244 EXPORT_SYMBOL(tgt_enqueue);
1246 int tgt_convert(struct tgt_session_info *tsi)
1248 struct ptlrpc_request *req = tgt_ses_req(tsi);
1252 LASSERT(tsi->tsi_dlm_req);
1253 rc = ldlm_handle_convert0(req, tsi->tsi_dlm_req);
1255 RETURN(err_serious(rc));
1257 RETURN(req->rq_status);
1259 EXPORT_SYMBOL(tgt_convert);
1261 int tgt_bl_callback(struct tgt_session_info *tsi)
1263 return err_serious(-EOPNOTSUPP);
1265 EXPORT_SYMBOL(tgt_bl_callback);
1267 int tgt_cp_callback(struct tgt_session_info *tsi)
1269 return err_serious(-EOPNOTSUPP);
1271 EXPORT_SYMBOL(tgt_cp_callback);
1273 /* generic LDLM target handler */
1274 struct tgt_handler tgt_dlm_handlers[] = {
1275 TGT_DLM_HDL (HABEO_CLAVIS, LDLM_ENQUEUE, tgt_enqueue),
1276 TGT_DLM_HDL_VAR(HABEO_CLAVIS, LDLM_CONVERT, tgt_convert),
1277 TGT_DLM_HDL_VAR(0, LDLM_BL_CALLBACK, tgt_bl_callback),
1278 TGT_DLM_HDL_VAR(0, LDLM_CP_CALLBACK, tgt_cp_callback)
1280 EXPORT_SYMBOL(tgt_dlm_handlers);
1283 * Unified target LLOG handlers.
1285 int tgt_llog_open(struct tgt_session_info *tsi)
1291 rc = llog_origin_handle_open(tgt_ses_req(tsi));
1295 EXPORT_SYMBOL(tgt_llog_open);
1297 int tgt_llog_close(struct tgt_session_info *tsi)
1303 rc = llog_origin_handle_close(tgt_ses_req(tsi));
1307 EXPORT_SYMBOL(tgt_llog_close);
1310 int tgt_llog_destroy(struct tgt_session_info *tsi)
1316 rc = llog_origin_handle_destroy(tgt_ses_req(tsi));
1320 EXPORT_SYMBOL(tgt_llog_destroy);
1322 int tgt_llog_read_header(struct tgt_session_info *tsi)
1328 rc = llog_origin_handle_read_header(tgt_ses_req(tsi));
1332 EXPORT_SYMBOL(tgt_llog_read_header);
1334 int tgt_llog_next_block(struct tgt_session_info *tsi)
1340 rc = llog_origin_handle_next_block(tgt_ses_req(tsi));
1344 EXPORT_SYMBOL(tgt_llog_next_block);
1346 int tgt_llog_prev_block(struct tgt_session_info *tsi)
1352 rc = llog_origin_handle_prev_block(tgt_ses_req(tsi));
1356 EXPORT_SYMBOL(tgt_llog_prev_block);
1358 /* generic llog target handler */
1359 struct tgt_handler tgt_llog_handlers[] = {
1360 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, tgt_llog_open),
1361 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
1362 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
1363 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
1364 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_DESTROY, tgt_llog_destroy),
1365 TGT_LLOG_HDL_VAR(0, LLOG_ORIGIN_HANDLE_CLOSE, tgt_llog_close),
1367 EXPORT_SYMBOL(tgt_llog_handlers);
1370 * sec context handlers
1372 /* XXX: Implement based on mdt_sec_ctx_handle()? */
1373 int tgt_sec_ctx_handle(struct tgt_session_info *tsi)
1378 struct tgt_handler tgt_sec_ctx_handlers[] = {
1379 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, tgt_sec_ctx_handle),
1380 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT, tgt_sec_ctx_handle),
1381 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, tgt_sec_ctx_handle),
1383 EXPORT_SYMBOL(tgt_sec_ctx_handlers);
1385 int (*tgt_lfsck_in_notify)(const struct lu_env *env,
1386 struct dt_device *key,
1387 struct lfsck_request *lr,
1388 struct thandle *th) = NULL;
1390 void tgt_register_lfsck_in_notify(int (*notify)(const struct lu_env *,
1392 struct lfsck_request *,
1395 tgt_lfsck_in_notify = notify;
1397 EXPORT_SYMBOL(tgt_register_lfsck_in_notify);
1399 static int (*tgt_lfsck_query)(const struct lu_env *env,
1400 struct dt_device *key,
1401 struct lfsck_request *lr) = NULL;
1403 void tgt_register_lfsck_query(int (*query)(const struct lu_env *,
1405 struct lfsck_request *))
1407 tgt_lfsck_query = query;
1409 EXPORT_SYMBOL(tgt_register_lfsck_query);
1411 /* LFSCK request handlers */
1412 static int tgt_handle_lfsck_notify(struct tgt_session_info *tsi)
1414 const struct lu_env *env = tsi->tsi_env;
1415 struct dt_device *key = tsi->tsi_tgt->lut_bottom;
1416 struct lfsck_request *lr;
1420 lr = req_capsule_client_get(tsi->tsi_pill, &RMF_LFSCK_REQUEST);
1424 rc = tgt_lfsck_in_notify(env, key, lr, NULL);
1429 static int tgt_handle_lfsck_query(struct tgt_session_info *tsi)
1431 struct lfsck_request *request;
1432 struct lfsck_reply *reply;
1436 request = req_capsule_client_get(tsi->tsi_pill, &RMF_LFSCK_REQUEST);
1437 if (request == NULL)
1440 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_LFSCK_REPLY);
1444 rc = tgt_lfsck_query(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, request);
1445 reply->lr_status = rc;
1447 RETURN(rc < 0 ? rc : 0);
1450 struct tgt_handler tgt_lfsck_handlers[] = {
1451 TGT_LFSCK_HDL(HABEO_REFERO, LFSCK_NOTIFY, tgt_handle_lfsck_notify),
1452 TGT_LFSCK_HDL(HABEO_REFERO, LFSCK_QUERY, tgt_handle_lfsck_query),
1454 EXPORT_SYMBOL(tgt_lfsck_handlers);
1457 * initialize per-thread page pool (bug 5137).
1459 int tgt_io_thread_init(struct ptlrpc_thread *thread)
1461 struct tgt_thread_big_cache *tbc;
1465 LASSERT(thread != NULL);
1466 LASSERT(thread->t_data == NULL);
1468 OBD_ALLOC_LARGE(tbc, sizeof(*tbc));
1471 thread->t_data = tbc;
1474 EXPORT_SYMBOL(tgt_io_thread_init);
1477 * free per-thread pool created by tgt_thread_init().
1479 void tgt_io_thread_done(struct ptlrpc_thread *thread)
1481 struct tgt_thread_big_cache *tbc;
1485 LASSERT(thread != NULL);
1488 * be prepared to handle partially-initialized pools (because this is
1489 * called from ost_io_thread_init() for cleanup.
1491 tbc = thread->t_data;
1493 OBD_FREE_LARGE(tbc, sizeof(*tbc));
1494 thread->t_data = NULL;
1498 EXPORT_SYMBOL(tgt_io_thread_done);
1500 * Helper function for getting server side [start, start+count] DLM lock
1501 * if asked by client.
1503 int tgt_extent_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1504 __u64 start, __u64 end, struct lustre_handle *lh,
1505 int mode, __u64 *flags)
1507 ldlm_policy_data_t policy;
1512 LASSERT(lh != NULL);
1513 LASSERT(ns != NULL);
1514 LASSERT(!lustre_handle_is_used(lh));
1516 policy.l_extent.gid = 0;
1517 policy.l_extent.start = start & CFS_PAGE_MASK;
1520 * If ->o_blocks is EOF it means "lock till the end of the file".
1521 * Otherwise, it's size of an extent or hole being punched (in bytes).
1523 if (end == OBD_OBJECT_EOF || end < start)
1524 policy.l_extent.end = OBD_OBJECT_EOF;
1526 policy.l_extent.end = end | ~CFS_PAGE_MASK;
1528 rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_EXTENT, &policy, mode,
1529 flags, ldlm_blocking_ast,
1530 ldlm_completion_ast, ldlm_glimpse_ast,
1531 NULL, 0, LVB_T_NONE, NULL, lh);
1532 RETURN(rc == ELDLM_OK ? 0 : -EIO);
1534 EXPORT_SYMBOL(tgt_extent_lock);
1536 void tgt_extent_unlock(struct lustre_handle *lh, ldlm_mode_t mode)
1538 LASSERT(lustre_handle_is_used(lh));
1539 ldlm_lock_decref(lh, mode);
1541 EXPORT_SYMBOL(tgt_extent_unlock);
1543 int tgt_brw_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1544 struct obd_ioobj *obj, struct niobuf_remote *nb,
1545 struct lustre_handle *lh, int mode)
1548 int nrbufs = obj->ioo_bufcnt;
1553 LASSERT(mode == LCK_PR || mode == LCK_PW);
1554 LASSERT(!lustre_handle_is_used(lh));
1556 if (nrbufs == 0 || !(nb[0].rnb_flags & OBD_BRW_SRVLOCK))
1559 for (i = 1; i < nrbufs; i++)
1560 if (!(nb[i].rnb_flags & OBD_BRW_SRVLOCK))
1563 RETURN(tgt_extent_lock(ns, res_id, nb[0].rnb_offset,
1564 nb[nrbufs - 1].rnb_offset +
1565 nb[nrbufs - 1].rnb_len - 1,
1568 EXPORT_SYMBOL(tgt_brw_lock);
1570 void tgt_brw_unlock(struct obd_ioobj *obj, struct niobuf_remote *niob,
1571 struct lustre_handle *lh, int mode)
1575 LASSERT(mode == LCK_PR || mode == LCK_PW);
1576 LASSERT((obj->ioo_bufcnt > 0 &&
1577 (niob[0].rnb_flags & OBD_BRW_SRVLOCK)) ==
1578 lustre_handle_is_used(lh));
1580 if (lustre_handle_is_used(lh))
1581 tgt_extent_unlock(lh, mode);
1584 EXPORT_SYMBOL(tgt_brw_unlock);
1586 static __u32 tgt_checksum_bulk(struct lu_target *tgt,
1587 struct ptlrpc_bulk_desc *desc, int opc,
1588 cksum_type_t cksum_type)
1590 struct cfs_crypto_hash_desc *hdesc;
1591 unsigned int bufsize;
1593 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1596 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1597 if (IS_ERR(hdesc)) {
1598 CERROR("%s: unable to initialize checksum hash %s\n",
1599 tgt_name(tgt), cfs_crypto_hash_name(cfs_alg));
1600 return PTR_ERR(hdesc);
1603 CDEBUG(D_INFO, "Checksum for algo %s\n", cfs_crypto_hash_name(cfs_alg));
1604 for (i = 0; i < desc->bd_iov_count; i++) {
1605 /* corrupt the data before we compute the checksum, to
1606 * simulate a client->OST data error */
1607 if (i == 0 && opc == OST_WRITE &&
1608 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) {
1609 int off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
1610 int len = desc->bd_iov[i].kiov_len;
1611 struct page *np = tgt_page_to_corrupt;
1612 char *ptr = kmap(desc->bd_iov[i].kiov_page) + off;
1615 char *ptr2 = kmap(np) + off;
1617 memcpy(ptr2, ptr, len);
1618 memcpy(ptr2, "bad3", min(4, len));
1620 desc->bd_iov[i].kiov_page = np;
1622 CERROR("%s: can't alloc page for corruption\n",
1626 cfs_crypto_hash_update_page(hdesc, desc->bd_iov[i].kiov_page,
1627 desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK,
1628 desc->bd_iov[i].kiov_len);
1630 /* corrupt the data after we compute the checksum, to
1631 * simulate an OST->client data error */
1632 if (i == 0 && opc == OST_READ &&
1633 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND)) {
1634 int off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
1635 int len = desc->bd_iov[i].kiov_len;
1636 struct page *np = tgt_page_to_corrupt;
1637 char *ptr = kmap(desc->bd_iov[i].kiov_page) + off;
1640 char *ptr2 = kmap(np) + off;
1642 memcpy(ptr2, ptr, len);
1643 memcpy(ptr2, "bad4", min(4, len));
1645 desc->bd_iov[i].kiov_page = np;
1647 CERROR("%s: can't alloc page for corruption\n",
1653 bufsize = sizeof(cksum);
1654 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1659 int tgt_brw_read(struct tgt_session_info *tsi)
1661 struct ptlrpc_request *req = tgt_ses_req(tsi);
1662 struct ptlrpc_bulk_desc *desc = NULL;
1663 struct obd_export *exp = tsi->tsi_exp;
1664 struct niobuf_remote *remote_nb;
1665 struct niobuf_local *local_nb;
1666 struct obd_ioobj *ioo;
1667 struct ost_body *body, *repbody;
1668 struct l_wait_info lwi;
1669 struct lustre_handle lockh = { 0 };
1670 int npages, nob = 0, rc, i, no_reply = 0;
1671 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
1675 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
1676 CERROR("%s: deny read request from %s to portal %u\n",
1677 tgt_name(tsi->tsi_tgt),
1678 obd_export_nid2str(req->rq_export),
1679 ptlrpc_req2svc(req)->srv_req_portal);
1683 req->rq_bulk_read = 1;
1685 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
1688 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
1689 cfs_fail_val : (obd_timeout + 1) / 4);
1691 /* Check if there is eviction in progress, and if so, wait for it to
1693 if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
1694 /* We do not care how long it takes */
1695 lwi = LWI_INTR(NULL, NULL);
1696 rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
1697 !atomic_read(&exp->exp_obd->obd_evict_inprogress),
1701 /* There must be big cache in current thread to process this request
1702 * if it is NULL then something went wrong and it wasn't allocated,
1703 * report -ENOMEM in that case */
1707 body = tsi->tsi_ost_body;
1708 LASSERT(body != NULL);
1710 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
1711 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
1713 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
1714 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
1716 local_nb = tbc->local;
1718 rc = tgt_brw_lock(exp->exp_obd->obd_namespace, &tsi->tsi_resid, ioo,
1719 remote_nb, &lockh, LCK_PR);
1724 * If getting the lock took more time than
1725 * client was willing to wait, drop it. b=11330
1727 if (cfs_time_current_sec() > req->rq_deadline ||
1728 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
1730 CERROR("Dropping timed-out read from %s because locking"
1731 "object "DOSTID" took %ld seconds (limit was %ld).\n",
1732 libcfs_id2str(req->rq_peer), POSTID(&ioo->ioo_oid),
1733 cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
1734 req->rq_deadline - req->rq_arrival_time.tv_sec);
1735 GOTO(out_lock, rc = -ETIMEDOUT);
1738 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1739 repbody->oa = body->oa;
1741 npages = PTLRPC_MAX_BRW_PAGES;
1742 rc = obd_preprw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1,
1743 ioo, remote_nb, &npages, local_nb, NULL, BYPASS_CAPA);
1747 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
1748 BULK_PUT_SOURCE, OST_BULK_PORTAL);
1750 GOTO(out_commitrw, rc = -ENOMEM);
1753 for (i = 0; i < npages; i++) {
1754 int page_rc = local_nb[i].lnb_rc;
1762 if (page_rc != 0) { /* some data! */
1763 LASSERT(local_nb[i].lnb_page != NULL);
1764 ptlrpc_prep_bulk_page_nopin(desc, local_nb[i].lnb_page,
1765 local_nb[i].lnb_page_offset,
1769 if (page_rc != local_nb[i].lnb_len) { /* short read */
1770 /* All subsequent pages should be 0 */
1771 while (++i < npages)
1772 LASSERT(local_nb[i].lnb_rc == 0);
1777 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1778 cksum_type_t cksum_type =
1779 cksum_type_unpack(body->oa.o_valid & OBD_MD_FLFLAGS ?
1780 body->oa.o_flags : 0);
1781 repbody->oa.o_flags = cksum_type_pack(cksum_type);
1782 repbody->oa.o_valid = OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1783 repbody->oa.o_cksum = tgt_checksum_bulk(tsi->tsi_tgt, desc,
1784 OST_READ, cksum_type);
1785 CDEBUG(D_PAGE, "checksum at read origin: %x\n",
1786 repbody->oa.o_cksum);
1788 repbody->oa.o_valid = 0;
1790 /* We're finishing using body->oa as an input variable */
1792 /* Check if client was evicted while we were doing i/o before touching
1794 if (likely(rc == 0 &&
1795 !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
1796 rc = target_bulk_io(exp, desc, &lwi);
1801 /* Must commit after prep above in all cases */
1802 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_READ, exp,
1803 &repbody->oa, 1, ioo, remote_nb, npages, local_nb,
1806 tgt_drop_id(exp, &repbody->oa);
1808 tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PR);
1810 if (desc && !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))
1811 ptlrpc_free_bulk_nopin(desc);
1816 ptlrpc_lprocfs_brw(req, nob);
1817 } else if (no_reply) {
1818 req->rq_no_reply = 1;
1819 /* reply out callback would free */
1820 ptlrpc_req_drop_rs(req);
1821 LCONSOLE_WARN("%s: Bulk IO read error with %s (at %s), "
1822 "client will retry: rc %d\n",
1823 exp->exp_obd->obd_name,
1824 obd_uuid2str(&exp->exp_client_uuid),
1825 obd_export_nid2str(exp), rc);
1827 /* send a bulk after reply to simulate a network delay or reordering
1829 if (unlikely(CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
1830 wait_queue_head_t waitq;
1831 struct l_wait_info lwi1;
1833 CDEBUG(D_INFO, "reorder BULK\n");
1834 init_waitqueue_head(&waitq);
1836 lwi1 = LWI_TIMEOUT_INTR(cfs_time_seconds(3), NULL, NULL, NULL);
1837 l_wait_event(waitq, 0, &lwi1);
1838 target_bulk_io(exp, desc, &lwi);
1839 ptlrpc_free_bulk_nopin(desc);
1844 EXPORT_SYMBOL(tgt_brw_read);
1846 static void tgt_warn_on_cksum(struct ptlrpc_request *req,
1847 struct ptlrpc_bulk_desc *desc,
1848 struct niobuf_local *local_nb, int npages,
1849 obd_count client_cksum, obd_count server_cksum,
1852 struct obd_export *exp = req->rq_export;
1853 struct ost_body *body;
1857 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
1858 LASSERT(body != NULL);
1860 if (req->rq_peer.nid == desc->bd_sender) {
1864 router = libcfs_nid2str(desc->bd_sender);
1868 CDEBUG_LIMIT(D_INFO, "client csum %x, server csum %x\n",
1869 client_cksum, server_cksum);
1873 LCONSOLE_ERROR_MSG(0x168, "BAD WRITE CHECKSUM: %s from %s%s%s inode "
1874 DFID" object "DOSTID" extent ["LPU64"-"LPU64
1875 "]: client csum %x, server csum %x\n",
1876 exp->exp_obd->obd_name, libcfs_id2str(req->rq_peer),
1878 body->oa.o_valid & OBD_MD_FLFID ?
1879 body->oa.o_parent_seq : (__u64)0,
1880 body->oa.o_valid & OBD_MD_FLFID ?
1881 body->oa.o_parent_oid : 0,
1882 body->oa.o_valid & OBD_MD_FLFID ?
1883 body->oa.o_parent_ver : 0,
1884 POSTID(&body->oa.o_oi),
1885 local_nb[0].lnb_file_offset,
1886 local_nb[npages-1].lnb_file_offset +
1887 local_nb[npages - 1].lnb_len - 1,
1888 client_cksum, server_cksum);
1891 int tgt_brw_write(struct tgt_session_info *tsi)
1893 struct ptlrpc_request *req = tgt_ses_req(tsi);
1894 struct ptlrpc_bulk_desc *desc = NULL;
1895 struct obd_export *exp = req->rq_export;
1896 struct niobuf_remote *remote_nb;
1897 struct niobuf_local *local_nb;
1898 struct obd_ioobj *ioo;
1899 struct ost_body *body, *repbody;
1900 struct l_wait_info lwi;
1901 struct lustre_handle lockh = {0};
1903 int objcount, niocount, npages;
1905 cksum_type_t cksum_type = OBD_CKSUM_CRC32;
1906 bool no_reply = false, mmap;
1907 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
1911 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
1912 CERROR("%s: deny write request from %s to portal %u\n",
1913 tgt_name(tsi->tsi_tgt),
1914 obd_export_nid2str(req->rq_export),
1915 ptlrpc_req2svc(req)->srv_req_portal);
1916 RETURN(err_serious(-EPROTO));
1919 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC))
1920 RETURN(err_serious(-ENOSPC));
1921 if (OBD_FAIL_TIMEOUT(OBD_FAIL_OST_EROFS, 1))
1922 RETURN(err_serious(-EROFS));
1924 req->rq_bulk_write = 1;
1926 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
1927 RETURN(err_serious(-EIO));
1928 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK2))
1929 RETURN(err_serious(-EFAULT));
1931 /* pause before transaction has been started */
1932 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
1933 cfs_fail_val : (obd_timeout + 1) / 4);
1935 /* There must be big cache in current thread to process this request
1936 * if it is NULL then something went wrong and it wasn't allocated,
1937 * report -ENOMEM in that case */
1941 body = tsi->tsi_ost_body;
1942 LASSERT(body != NULL);
1944 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
1945 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
1947 objcount = req_capsule_get_size(&req->rq_pill, &RMF_OBD_IOOBJ,
1948 RCL_CLIENT) / sizeof(*ioo);
1950 for (niocount = i = 0; i < objcount; i++)
1951 niocount += ioo[i].ioo_bufcnt;
1953 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
1954 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
1955 if (niocount != req_capsule_get_size(&req->rq_pill,
1956 &RMF_NIOBUF_REMOTE, RCL_CLIENT) /
1958 RETURN(err_serious(-EPROTO));
1960 if ((remote_nb[0].rnb_flags & OBD_BRW_MEMALLOC) &&
1961 (exp->exp_connection->c_peer.nid == exp->exp_connection->c_self))
1962 memory_pressure_set();
1964 req_capsule_set_size(&req->rq_pill, &RMF_RCS, RCL_SERVER,
1965 niocount * sizeof(*rcs));
1966 rc = req_capsule_server_pack(&req->rq_pill);
1968 GOTO(out, rc = err_serious(rc));
1970 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_PACK, cfs_fail_val);
1971 rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
1973 local_nb = tbc->local;
1975 rc = tgt_brw_lock(exp->exp_obd->obd_namespace, &tsi->tsi_resid, ioo,
1976 remote_nb, &lockh, LCK_PW);
1981 * If getting the lock took more time than
1982 * client was willing to wait, drop it. b=11330
1984 if (cfs_time_current_sec() > req->rq_deadline ||
1985 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
1987 CERROR("%s: Dropping timed-out write from %s because locking "
1988 "object "DOSTID" took %ld seconds (limit was %ld).\n",
1989 tgt_name(tsi->tsi_tgt), libcfs_id2str(req->rq_peer),
1990 POSTID(&ioo->ioo_oid),
1991 cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
1992 req->rq_deadline - req->rq_arrival_time.tv_sec);
1993 GOTO(out_lock, rc = -ETIMEDOUT);
1996 /* Because we already sync grant info with client when reconnect,
1997 * grant info will be cleared for resent req, then fed_grant and
1998 * total_grant will not be modified in following preprw_write */
1999 if (lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) {
2000 DEBUG_REQ(D_CACHE, req, "clear resent/replay req grant info");
2001 body->oa.o_valid &= ~OBD_MD_FLGRANT;
2004 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2005 if (repbody == NULL)
2006 GOTO(out_lock, rc = -ENOMEM);
2007 repbody->oa = body->oa;
2009 npages = PTLRPC_MAX_BRW_PAGES;
2010 rc = obd_preprw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
2011 objcount, ioo, remote_nb, &npages, local_nb, NULL,
2016 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
2017 BULK_GET_SINK, OST_BULK_PORTAL);
2019 GOTO(skip_transfer, rc = -ENOMEM);
2021 /* NB Having prepped, we must commit... */
2022 for (i = 0; i < npages; i++)
2023 ptlrpc_prep_bulk_page_nopin(desc, local_nb[i].lnb_page,
2024 local_nb[i].lnb_page_offset,
2025 local_nb[i].lnb_len);
2027 rc = sptlrpc_svc_prep_bulk(req, desc);
2029 GOTO(skip_transfer, rc);
2031 rc = target_bulk_io(exp, desc, &lwi);
2035 if (body->oa.o_valid & OBD_MD_FLCKSUM && rc == 0) {
2036 static int cksum_counter;
2038 if (body->oa.o_valid & OBD_MD_FLFLAGS)
2039 cksum_type = cksum_type_unpack(body->oa.o_flags);
2041 repbody->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
2042 repbody->oa.o_flags &= ~OBD_FL_CKSUM_ALL;
2043 repbody->oa.o_flags |= cksum_type_pack(cksum_type);
2044 repbody->oa.o_cksum = tgt_checksum_bulk(tsi->tsi_tgt, desc,
2045 OST_WRITE, cksum_type);
2048 if (unlikely(body->oa.o_cksum != repbody->oa.o_cksum)) {
2049 mmap = (body->oa.o_valid & OBD_MD_FLFLAGS &&
2050 body->oa.o_flags & OBD_FL_MMAP);
2052 tgt_warn_on_cksum(req, desc, local_nb, npages,
2054 repbody->oa.o_cksum, mmap);
2056 } else if ((cksum_counter & (-cksum_counter)) ==
2058 CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n",
2059 cksum_counter, libcfs_id2str(req->rq_peer),
2060 repbody->oa.o_cksum);
2064 /* Must commit after prep above in all cases */
2065 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
2066 objcount, ioo, remote_nb, npages, local_nb, NULL,
2068 if (rc == -ENOTCONN)
2069 /* quota acquire process has been given up because
2070 * either the client has been evicted or the client
2071 * has timed out the request already */
2075 * Disable sending mtime back to the client. If the client locked the
2076 * whole object, then it has already updated the mtime on its side,
2077 * otherwise it will have to glimpse anyway (see bug 21489, comment 32)
2079 repbody->oa.o_valid &= ~(OBD_MD_FLMTIME | OBD_MD_FLATIME);
2084 /* set per-requested niobuf return codes */
2085 for (i = j = 0; i < niocount; i++) {
2086 int len = remote_nb[i].rnb_len;
2091 LASSERT(j < npages);
2092 if (local_nb[j].lnb_rc < 0)
2093 rcs[i] = local_nb[j].lnb_rc;
2094 len -= local_nb[j].lnb_len;
2099 LASSERT(j == npages);
2100 ptlrpc_lprocfs_brw(req, nob);
2102 tgt_drop_id(exp, &repbody->oa);
2105 tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PW);
2107 ptlrpc_free_bulk_nopin(desc);
2110 req->rq_no_reply = 1;
2111 /* reply out callback would free */
2112 ptlrpc_req_drop_rs(req);
2113 LCONSOLE_WARN("%s: Bulk IO write error with %s (at %s), "
2114 "client will retry: rc %d\n",
2115 exp->exp_obd->obd_name,
2116 obd_uuid2str(&exp->exp_client_uuid),
2117 obd_export_nid2str(exp), rc);
2119 memory_pressure_clr();
2122 EXPORT_SYMBOL(tgt_brw_write);