4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 021110-1307, USA
24 * Copyright (c) 2013, 2017, Intel Corporation.
27 * lustre/target/tgt_handler.c
29 * Lustre Unified Target request handler code
31 * Author: Brian Behlendorf <behlendorf1@llnl.gov>
32 * Author: Mikhail Pershin <mike.pershin@intel.com>
35 #define DEBUG_SUBSYSTEM S_CLASS
37 #include <linux/user_namespace.h>
38 #include <linux/delay.h>
39 #ifdef HAVE_UIDGID_HEADER
40 # include <linux/uidgid.h>
44 #include <obd_class.h>
45 #include <obd_cksum.h>
46 #include <lustre_lfsck.h>
47 #include <lustre_nodemap.h>
48 #include <lustre_acl.h>
50 #include "tgt_internal.h"
52 char *tgt_name(struct lu_target *tgt)
54 LASSERT(tgt->lut_obd != NULL);
55 return tgt->lut_obd->obd_name;
57 EXPORT_SYMBOL(tgt_name);
60 * Generic code handling requests that have struct mdt_body passed in:
62 * - extract mdt_body from request and save it in @tsi, if present;
64 * - create lu_object, corresponding to the fid in mdt_body, and save it in
67 * - if HAS_BODY flag is set for this request type check whether object
68 * actually exists on storage (lu_object_exists()).
71 static int tgt_mdt_body_unpack(struct tgt_session_info *tsi, __u32 flags)
73 const struct mdt_body *body;
74 struct lu_object *obj;
75 struct req_capsule *pill = tsi->tsi_pill;
80 body = req_capsule_client_get(pill, &RMF_MDT_BODY);
84 tsi->tsi_mdt_body = body;
86 if (!(body->mbo_valid & OBD_MD_FLID))
89 /* mdc_pack_body() doesn't check if fid is zero and set OBD_ML_FID
90 * in any case in pre-2.5 clients. Fix that here if needed */
91 if (unlikely(fid_is_zero(&body->mbo_fid1)))
94 if (!fid_is_sane(&body->mbo_fid1)) {
95 CERROR("%s: invalid FID: "DFID"\n", tgt_name(tsi->tsi_tgt),
96 PFID(&body->mbo_fid1));
100 obj = lu_object_find(tsi->tsi_env,
101 &tsi->tsi_tgt->lut_bottom->dd_lu_dev,
102 &body->mbo_fid1, NULL);
104 if ((flags & HAS_BODY) && !lu_object_exists(obj)) {
105 lu_object_put(tsi->tsi_env, obj);
108 tsi->tsi_corpus = obj;
115 tsi->tsi_fid = body->mbo_fid1;
121 * Validate oa from client.
122 * If the request comes from 2.0 clients, currently only RSVD seq and IDIF
124 * a. objects in Single MDT FS seq = FID_SEQ_OST_MDT0, oi_id != 0
125 * b. Echo objects(seq = 2), old echo client still use oi_id/oi_seq to
126 * pack ost_id. Because non-zero oi_seq will make it diffcult to tell
127 * whether this is oi_fid or real ostid. So it will check
128 * OBD_CONNECT_FID, then convert the ostid to FID for old client.
129 * c. Old FID-disable osc will send IDIF.
130 * d. new FID-enable osc/osp will send normal FID.
132 * And also oi_id/f_oid should always start from 1. oi_id/f_oid = 0 will
133 * be used for LAST_ID file, and only being accessed inside OST now.
135 int tgt_validate_obdo(struct tgt_session_info *tsi, struct obdo *oa)
137 struct ost_id *oi = &oa->o_oi;
138 u64 seq = ostid_seq(oi);
139 u64 id = ostid_id(oi);
143 if (unlikely(!(exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_FID) &&
144 fid_seq_is_echo(seq))) {
145 /* Sigh 2.[123] client still sends echo req with oi_id = 0
146 * during create, and we will reset this to 1, since this
147 * oi_id is basically useless in the following create process,
148 * but oi_id == 0 will make it difficult to tell whether it is
149 * real FID or ost_id. */
150 oi->oi_fid.f_seq = FID_SEQ_ECHO;
151 oi->oi_fid.f_oid = id ?: 1;
152 oi->oi_fid.f_ver = 0;
154 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
156 if (unlikely((oa->o_valid & OBD_MD_FLID) && id == 0))
157 GOTO(out, rc = -EPROTO);
159 /* Note: this check might be forced in 2.5 or 2.6, i.e.
160 * all of the requests are required to setup FLGROUP */
161 if (unlikely(!(oa->o_valid & OBD_MD_FLGROUP))) {
162 ostid_set_seq_mdt0(oi);
163 oa->o_valid |= OBD_MD_FLGROUP;
167 if (unlikely(!(fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq) ||
168 fid_seq_is_norm(seq) || fid_seq_is_echo(seq))))
169 GOTO(out, rc = -EPROTO);
171 rc = ostid_to_fid(&tti->tti_fid1, oi,
172 tsi->tsi_tgt->lut_lsd.lsd_osd_index);
173 if (unlikely(rc != 0))
176 oi->oi_fid = tti->tti_fid1;
182 CERROR("%s: client %s sent bad object "DOSTID": rc = %d\n",
183 tgt_name(tsi->tsi_tgt), obd_export_nid2str(tsi->tsi_exp),
187 EXPORT_SYMBOL(tgt_validate_obdo);
189 static int tgt_io_data_unpack(struct tgt_session_info *tsi, struct ost_id *oi)
192 struct niobuf_remote *rnb;
193 struct obd_ioobj *ioo;
198 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
202 rnb = req_capsule_client_get(tsi->tsi_pill, &RMF_NIOBUF_REMOTE);
206 max_brw = ioobj_max_brw_get(ioo);
207 if (unlikely((max_brw & (max_brw - 1)) != 0)) {
208 CERROR("%s: client %s sent bad ioobj max %u for "DOSTID
209 ": rc = %d\n", tgt_name(tsi->tsi_tgt),
210 obd_export_nid2str(tsi->tsi_exp), max_brw,
211 POSTID(oi), -EPROTO);
216 obj_count = req_capsule_get_size(tsi->tsi_pill, &RMF_OBD_IOOBJ,
217 RCL_CLIENT) / sizeof(*ioo);
218 if (obj_count == 0) {
219 CERROR("%s: short ioobj\n", tgt_name(tsi->tsi_tgt));
221 } else if (obj_count > 1) {
222 CERROR("%s: too many ioobjs (%d)\n", tgt_name(tsi->tsi_tgt),
227 if (ioo->ioo_bufcnt == 0) {
228 CERROR("%s: ioo has zero bufcnt\n", tgt_name(tsi->tsi_tgt));
232 if (ioo->ioo_bufcnt > PTLRPC_MAX_BRW_PAGES) {
233 DEBUG_REQ(D_RPCTRACE, tgt_ses_req(tsi),
234 "bulk has too many pages (%d)",
242 static int tgt_ost_body_unpack(struct tgt_session_info *tsi, __u32 flags)
244 struct ost_body *body;
245 struct req_capsule *pill = tsi->tsi_pill;
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 = nodemap_get_from_exp(tsi->tsi_exp);
261 RETURN(PTR_ERR(nodemap));
263 body->oa.o_uid = nodemap_map_id(nodemap, NODEMAP_UID,
264 NODEMAP_CLIENT_TO_FS,
266 body->oa.o_gid = nodemap_map_id(nodemap, NODEMAP_GID,
267 NODEMAP_CLIENT_TO_FS,
269 nodemap_putref(nodemap);
271 tsi->tsi_ost_body = body;
272 tsi->tsi_fid = body->oa.o_oi.oi_fid;
274 if (req_capsule_has_field(pill, &RMF_OBD_IOOBJ, RCL_CLIENT)) {
275 rc = tgt_io_data_unpack(tsi, &body->oa.o_oi);
280 if (!(body->oa.o_valid & OBD_MD_FLID)) {
281 if (flags & HAS_BODY) {
282 CERROR("%s: OBD_MD_FLID flag is not set in ost_body but OID/FID is mandatory with HAS_BODY\n",
283 tgt_name(tsi->tsi_tgt));
290 ost_fid_build_resid(&tsi->tsi_fid, &tsi->tsi_resid);
293 * OST doesn't get object in advance for further use to prevent
294 * situations with nested object_find which is potential deadlock.
296 tsi->tsi_corpus = NULL;
301 * Do necessary preprocessing according to handler ->th_flags.
303 static int tgt_request_preprocess(struct tgt_session_info *tsi,
304 struct tgt_handler *h,
305 struct ptlrpc_request *req)
307 struct req_capsule *pill = tsi->tsi_pill;
308 __u32 flags = h->th_flags;
313 if (tsi->tsi_preprocessed)
316 LASSERT(h->th_act != NULL);
317 LASSERT(h->th_opc == lustre_msg_get_opc(req->rq_reqmsg));
318 LASSERT(current->journal_info == NULL);
320 LASSERT(ergo(flags & (HAS_BODY | HAS_REPLY),
322 if (h->th_fmt != NULL) {
323 req_capsule_set(pill, h->th_fmt);
324 if (req_capsule_has_field(pill, &RMF_MDT_BODY, RCL_CLIENT)) {
325 rc = tgt_mdt_body_unpack(tsi, flags);
328 } else if (req_capsule_has_field(pill, &RMF_OST_BODY,
330 rc = tgt_ost_body_unpack(tsi, flags);
336 if (flags & IS_MUTABLE && tgt_conn_flags(tsi) & OBD_CONNECT_RDONLY)
339 if (flags & HAS_KEY) {
340 struct ldlm_request *dlm_req;
342 LASSERT(h->th_fmt != NULL);
344 dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
345 if (dlm_req != NULL) {
346 union ldlm_wire_policy_data *policy =
347 &dlm_req->lock_desc.l_policy_data;
349 if (unlikely(dlm_req->lock_desc.l_resource.lr_type ==
351 (policy->l_inodebits.bits |
352 policy->l_inodebits.try_bits) == 0)) {
354 * Lock without inodebits makes no sense and
355 * will oops later in ldlm. If client miss to
356 * set such bits, do not trigger ASSERTION.
358 * For liblustre flock case, it maybe zero.
362 tsi->tsi_dlm_req = dlm_req;
368 tsi->tsi_preprocessed = 1;
373 * Invoke handler for this request opc. Also do necessary preprocessing
374 * (according to handler ->th_flags), and post-processing (setting of
375 * ->last_{xid,committed}).
377 static int tgt_handle_request0(struct tgt_session_info *tsi,
378 struct tgt_handler *h,
379 struct ptlrpc_request *req)
383 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
388 /* When dealing with sec context requests, no export is associated yet,
389 * because these requests are sent before *_CONNECT requests.
390 * A NULL req->rq_export means the normal *_common_slice handlers will
391 * not be called, because there is no reference to the target.
392 * So deal with them by hand and jump directly to target_send_reply().
396 case SEC_CTX_INIT_CONT:
398 CFS_FAIL_TIMEOUT(OBD_FAIL_SEC_CTX_HDL_PAUSE, cfs_fail_val);
403 * Checking for various OBD_FAIL_$PREF_$OPC_NET codes. _Do_ not try
404 * to put same checks into handlers like mdt_close(), mdt_reint(),
405 * etc., without talking to mdt authors first. Checking same thing
406 * there again is useless and returning 0 error without packing reply
407 * is buggy! Handlers either pack reply or return error.
409 * We return 0 here and do not send any reply in order to emulate
410 * network failure. Do not send any reply in case any of NET related
411 * fail_id has occured.
413 if (OBD_FAIL_CHECK_ORSET(h->th_fail_id, OBD_FAIL_ONCE))
415 if (unlikely(lustre_msg_get_opc(req->rq_reqmsg) == MDS_REINT &&
416 OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_MULTI_NET)))
419 rc = tgt_request_preprocess(tsi, h, req);
420 /* pack reply if reply format is fixed */
421 if (rc == 0 && h->th_flags & HAS_REPLY) {
423 if (req_capsule_has_field(tsi->tsi_pill, &RMF_MDT_MD,
425 req_capsule_set_size(tsi->tsi_pill, &RMF_MDT_MD,
427 tsi->tsi_mdt_body->mbo_eadatasize);
428 if (req_capsule_has_field(tsi->tsi_pill, &RMF_LOGCOOKIES,
430 req_capsule_set_size(tsi->tsi_pill, &RMF_LOGCOOKIES,
432 if (req_capsule_has_field(tsi->tsi_pill, &RMF_ACL, RCL_SERVER))
433 req_capsule_set_size(tsi->tsi_pill,
434 &RMF_ACL, RCL_SERVER,
435 LUSTRE_POSIX_ACL_MAX_SIZE_OLD);
437 if (req_capsule_has_field(tsi->tsi_pill, &RMF_SHORT_IO,
439 struct niobuf_remote *remote_nb =
440 req_capsule_client_get(tsi->tsi_pill,
442 struct ost_body *body = tsi->tsi_ost_body;
444 req_capsule_set_size(tsi->tsi_pill, &RMF_SHORT_IO,
446 (body->oa.o_valid & OBD_MD_FLFLAGS &&
447 body->oa.o_flags & OBD_FL_SHORT_IO) ?
448 remote_nb[0].rnb_len : 0);
451 rc = req_capsule_server_pack(tsi->tsi_pill);
454 if (likely(rc == 0)) {
456 * Process request, there can be two types of rc:
457 * 1) errors with msg unpack/pack, other failures outside the
458 * operation itself. This is counted as serious errors;
459 * 2) errors during fs operation, should be placed in rq_status
463 if (!is_serious(rc) &&
464 !req->rq_no_reply && req->rq_reply_state == NULL) {
465 DEBUG_REQ(D_ERROR, req,
466 "%s: %s handler did not pack reply but returned no error",
467 tgt_name(tsi->tsi_tgt), h->th_name);
470 serious = is_serious(rc);
471 rc = clear_serious(rc);
479 * ELDLM_* codes which > 0 should be in rq_status only as well as
480 * all non-serious errors.
482 if (rc > 0 || !serious)
485 LASSERT(current->journal_info == NULL);
487 if (likely(rc == 0 && req->rq_export))
488 target_committed_to_req(req);
491 target_send_reply(req, rc, tsi->tsi_reply_fail_id);
495 static int tgt_filter_recovery_request(struct ptlrpc_request *req,
496 struct obd_device *obd, int *process)
498 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
505 case MDS_SYNC: /* used in unmounting */
519 case MDS_HSM_PROGRESS:
520 case MDS_HSM_STATE_SET:
521 case MDS_HSM_REQUEST:
522 *process = target_queue_recovery_request(req, obd);
526 DEBUG_REQ(D_ERROR, req, "not permitted during recovery");
533 * Handle recovery. Return:
534 * +1: continue request processing;
535 * -ve: abort immediately with the given error code;
536 * 0: send reply with error code in req->rq_status;
538 static int tgt_handle_recovery(struct ptlrpc_request *req, int reply_fail_id)
542 switch (lustre_msg_get_opc(req->rq_reqmsg)) {
547 case SEC_CTX_INIT_CONT:
552 if (!req->rq_export->exp_obd->obd_replayable)
555 /* sanity check: if the xid matches, the request must be marked as a
556 * resent or replayed */
557 if (req_can_reconstruct(req, NULL) == 1) {
558 if (!(lustre_msg_get_flags(req->rq_reqmsg) &
559 (MSG_RESENT | MSG_REPLAY))) {
560 DEBUG_REQ(D_WARNING, req,
561 "rq_xid=%llu matches saved XID, expected REPLAY or RESENT flag (%x)",
563 lustre_msg_get_flags(req->rq_reqmsg));
564 req->rq_status = -ENOTCONN;
568 /* else: note the opposite is not always true; a RESENT req after a
569 * failover will usually not match the last_xid, since it was likely
570 * never committed. A REPLAYed request will almost never match the
571 * last xid, however it could for a committed, but still retained,
574 /* Check for aborted recovery... */
575 if (unlikely(req->rq_export->exp_obd->obd_recovering)) {
579 DEBUG_REQ(D_INFO, req, "Got new replay");
580 rc = tgt_filter_recovery_request(req, req->rq_export->exp_obd,
582 if (rc != 0 || !should_process)
584 else if (should_process < 0) {
585 req->rq_status = should_process;
586 rc = ptlrpc_error(req);
593 /* Initial check for request, it is validation mostly */
594 static struct tgt_handler *tgt_handler_find_check(struct ptlrpc_request *req)
596 struct tgt_handler *h;
597 struct tgt_opc_slice *s;
598 struct lu_target *tgt;
599 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
603 tgt = class_exp2tgt(req->rq_export);
604 if (unlikely(tgt == NULL)) {
605 DEBUG_REQ(D_ERROR, req, "%s: no target for connected export",
606 class_exp2obd(req->rq_export)->obd_name);
607 RETURN(ERR_PTR(-EINVAL));
610 for (s = tgt->lut_slice; s->tos_hs != NULL; s++)
611 if (s->tos_opc_start <= opc && opc < s->tos_opc_end)
614 /* opcode was not found in slice */
615 if (unlikely(s->tos_hs == NULL)) {
616 CERROR("%s: no handlers for opcode 0x%x\n", tgt_name(tgt),
618 RETURN(ERR_PTR(-ENOTSUPP));
621 LASSERT(opc >= s->tos_opc_start && opc < s->tos_opc_end);
622 h = s->tos_hs + (opc - s->tos_opc_start);
623 if (unlikely(h->th_opc == 0)) {
624 CERROR("%s: unsupported opcode 0x%x\n", tgt_name(tgt), opc);
625 RETURN(ERR_PTR(-ENOTSUPP));
631 static int process_req_last_xid(struct ptlrpc_request *req)
635 struct obd_export *exp = req->rq_export;
636 struct tg_export_data *ted = &exp->exp_target_data;
637 bool need_lock = tgt_is_multimodrpcs_client(exp);
641 mutex_lock(&ted->ted_lcd_lock);
642 /* check request's xid is consistent with export's last_xid */
643 last_xid = lustre_msg_get_last_xid(req->rq_reqmsg);
644 if (last_xid > exp->exp_last_xid)
645 exp->exp_last_xid = last_xid;
647 if (req->rq_xid == 0 || req->rq_xid <= exp->exp_last_xid) {
648 /* Some request is allowed to be sent during replay,
649 * such as OUT update requests, FLD requests, so it
650 * is possible that replay requests has smaller XID
651 * than the exp_last_xid.
653 * Some non-replay requests may have smaller XID as
656 * - Client send a no_resend RPC, like statfs;
657 * - The RPC timedout (or some other error) on client,
658 * then it's removed from the unreplied list;
659 * - Client send some other request to bump the
660 * exp_last_xid on server;
661 * - The former RPC got chance to be processed;
663 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
666 DEBUG_REQ(D_WARNING, req,
667 "unexpected xid=%llx != exp_last_xid=%llx, rc = %d",
668 req->rq_xid, exp->exp_last_xid, rc);
673 /* The "last_xid" is the minimum xid among unreplied requests,
674 * if the request is from the previous connection, its xid can
675 * still be larger than "exp_last_xid", then the above check of
676 * xid is not enough to determine whether the request is delayed.
678 * For example, if some replay request was delayed and caused
679 * timeout at client and the replay is restarted, the delayed
680 * replay request will have the larger xid than "exp_last_xid"
682 if (req->rq_export->exp_conn_cnt >
683 lustre_msg_get_conn_cnt(req->rq_reqmsg))
684 GOTO(out, rc = -ESTALE);
686 /* try to release in-memory reply data */
687 if (tgt_is_multimodrpcs_client(exp)) {
688 tgt_handle_received_xid(exp, last_xid);
689 rc = tgt_handle_tag(req);
694 mutex_unlock(&ted->ted_lcd_lock);
699 int tgt_request_handle(struct ptlrpc_request *req)
701 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
703 struct lustre_msg *msg = req->rq_reqmsg;
704 struct tgt_handler *h;
705 struct lu_target *tgt;
706 int request_fail_id = 0;
707 __u32 opc = lustre_msg_get_opc(msg);
708 struct obd_device *obd;
710 bool is_connect = false;
713 if (unlikely(OBD_FAIL_CHECK(OBD_FAIL_TGT_RECOVERY_REQ_RACE))) {
714 if (cfs_fail_val == 0 &&
715 lustre_msg_get_opc(msg) != OBD_PING &&
716 lustre_msg_get_flags(msg) & MSG_REQ_REPLAY_DONE) {
719 wait_event_idle(cfs_race_waitq, (cfs_race_state == 1));
723 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
724 tsi->tsi_pill = &req->rq_pill;
725 tsi->tsi_env = req->rq_svc_thread->t_env;
727 /* if request has export then get handlers slice from corresponding
728 * target, otherwise that should be connect operation */
729 if (opc == MDS_CONNECT || opc == OST_CONNECT ||
730 opc == MGS_CONNECT) {
732 req_capsule_set(&req->rq_pill, &RQF_CONNECT);
733 rc = target_handle_connect(req);
735 rc = ptlrpc_error(req);
738 /* recovery-small test 18c asks to drop connect reply */
739 if (unlikely(opc == OST_CONNECT &&
740 OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET2)))
744 if (unlikely(!class_connected_export(req->rq_export))) {
745 if (opc == SEC_CTX_INIT || opc == SEC_CTX_INIT_CONT ||
746 opc == SEC_CTX_FINI) {
747 /* sec context initialization has to be handled
748 * by hand in tgt_handle_request0() */
749 tsi->tsi_reply_fail_id = OBD_FAIL_SEC_CTX_INIT_NET;
751 GOTO(handle_recov, rc = 0);
753 CDEBUG(D_HA, "operation %d on unconnected OST from %s\n",
754 opc, libcfs_id2str(req->rq_peer));
755 req->rq_status = -ENOTCONN;
756 rc = ptlrpc_error(req);
760 tsi->tsi_tgt = tgt = class_exp2tgt(req->rq_export);
761 tsi->tsi_exp = req->rq_export;
762 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_JOBSTATS)
763 tsi->tsi_jobid = lustre_msg_get_jobid(req->rq_reqmsg);
765 tsi->tsi_jobid = NULL;
768 DEBUG_REQ(D_ERROR, req, "%s: No target for connected export",
769 class_exp2obd(req->rq_export)->obd_name);
770 req->rq_status = -EINVAL;
771 rc = ptlrpc_error(req);
775 /* Skip last_xid processing for the recovery thread, otherwise, the
776 * last_xid on same request could be processed twice: first time when
777 * processing the incoming request, second time when the request is
778 * being processed by recovery thread. */
779 obd = class_exp2obd(req->rq_export);
781 /* reset the exp_last_xid on each connection. */
782 req->rq_export->exp_last_xid = 0;
783 } else if (obd->obd_recovery_data.trd_processing_task !=
785 rc = process_req_last_xid(req);
788 rc = ptlrpc_error(req);
793 request_fail_id = tgt->lut_request_fail_id;
794 tsi->tsi_reply_fail_id = tgt->lut_reply_fail_id;
796 h = tgt_handler_find_check(req);
798 req->rq_status = PTR_ERR(h);
799 rc = ptlrpc_error(req);
803 LASSERTF(h->th_opc == opc, "opcode mismatch %d != %d\n",
806 if ((cfs_fail_val == 0 || cfs_fail_val == opc) &&
807 CFS_FAIL_CHECK_ORSET(request_fail_id, CFS_FAIL_ONCE))
810 rc = lustre_msg_check_version(msg, h->th_version);
812 DEBUG_REQ(D_ERROR, req,
813 "%s: drop malformed request version=%08x expect=%08x",
814 tgt_name(tgt), lustre_msg_get_version(msg),
816 req->rq_status = -EINVAL;
817 rc = ptlrpc_error(req);
822 rc = tgt_handle_recovery(req, tsi->tsi_reply_fail_id);
823 if (likely(rc == 1)) {
824 rc = tgt_handle_request0(tsi, h, req);
830 req_capsule_fini(tsi->tsi_pill);
831 if (tsi->tsi_corpus != NULL) {
832 lu_object_put(tsi->tsi_env, tsi->tsi_corpus);
833 tsi->tsi_corpus = NULL;
837 EXPORT_SYMBOL(tgt_request_handle);
839 /** Assign high priority operations to the request if needed. */
840 int tgt_hpreq_handler(struct ptlrpc_request *req)
842 struct tgt_session_info *tsi = tgt_ses_info(req->rq_svc_thread->t_env);
843 struct tgt_handler *h;
848 if (req->rq_export == NULL)
851 req_capsule_init(&req->rq_pill, req, RCL_SERVER);
852 tsi->tsi_pill = &req->rq_pill;
853 tsi->tsi_env = req->rq_svc_thread->t_env;
854 tsi->tsi_tgt = class_exp2tgt(req->rq_export);
855 tsi->tsi_exp = req->rq_export;
857 h = tgt_handler_find_check(req);
863 rc = tgt_request_preprocess(tsi, h, req);
864 if (unlikely(rc != 0))
867 if (h->th_hp != NULL)
871 EXPORT_SYMBOL(tgt_hpreq_handler);
873 void tgt_counter_incr(struct obd_export *exp, int opcode)
875 lprocfs_counter_incr(exp->exp_obd->obd_stats, opcode);
876 if (exp->exp_nid_stats && exp->exp_nid_stats->nid_stats != NULL)
877 lprocfs_counter_incr(exp->exp_nid_stats->nid_stats, opcode);
879 EXPORT_SYMBOL(tgt_counter_incr);
882 * Unified target generic handlers.
885 int tgt_connect_check_sptlrpc(struct ptlrpc_request *req, struct obd_export *exp)
887 struct lu_target *tgt = class_exp2tgt(exp);
888 struct sptlrpc_flavor flvr;
892 LASSERT(tgt->lut_obd);
893 LASSERT(tgt->lut_slice);
895 /* always allow ECHO client */
896 if (unlikely(strcmp(exp->exp_obd->obd_type->typ_name,
897 LUSTRE_ECHO_NAME) == 0)) {
898 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
902 if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
903 read_lock(&tgt->lut_sptlrpc_lock);
904 sptlrpc_target_choose_flavor(&tgt->lut_sptlrpc_rset,
908 read_unlock(&tgt->lut_sptlrpc_lock);
910 spin_lock(&exp->exp_lock);
911 exp->exp_sp_peer = req->rq_sp_from;
912 exp->exp_flvr = flvr;
914 /* when on mgs, if no restriction is set, or if client
915 * is loopback, allow any flavor */
916 if ((strcmp(exp->exp_obd->obd_type->typ_name,
917 LUSTRE_MGS_NAME) == 0) &&
918 (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_NULL ||
919 LNET_NETTYP(LNET_NIDNET(exp->exp_connection->c_peer.nid))
921 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
923 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
924 exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
925 CERROR("%s: unauthorized rpc flavor %x from %s, "
926 "expect %x\n", tgt_name(tgt),
928 libcfs_nid2str(req->rq_peer.nid),
929 exp->exp_flvr.sf_rpc);
932 spin_unlock(&exp->exp_lock);
934 if (exp->exp_sp_peer != req->rq_sp_from) {
935 CERROR("%s: RPC source %s doesn't match %s\n",
937 sptlrpc_part2name(req->rq_sp_from),
938 sptlrpc_part2name(exp->exp_sp_peer));
941 rc = sptlrpc_target_export_check(exp, req);
948 int tgt_adapt_sptlrpc_conf(struct lu_target *tgt)
950 struct sptlrpc_rule_set tmp_rset;
953 if (unlikely(tgt == NULL)) {
954 CERROR("No target passed");
958 sptlrpc_rule_set_init(&tmp_rset);
959 rc = sptlrpc_conf_target_get_rules(tgt->lut_obd, &tmp_rset);
961 CERROR("%s: failed get sptlrpc rules: rc = %d\n",
966 sptlrpc_target_update_exp_flavor(tgt->lut_obd, &tmp_rset);
968 write_lock(&tgt->lut_sptlrpc_lock);
969 sptlrpc_rule_set_free(&tgt->lut_sptlrpc_rset);
970 tgt->lut_sptlrpc_rset = tmp_rset;
971 write_unlock(&tgt->lut_sptlrpc_lock);
975 EXPORT_SYMBOL(tgt_adapt_sptlrpc_conf);
977 int tgt_connect(struct tgt_session_info *tsi)
979 struct ptlrpc_request *req = tgt_ses_req(tsi);
980 struct obd_connect_data *reply;
985 /* XXX: better to call this check right after getting new export but
986 * before last_rcvd slot allocation to avoid server load upon insecure
987 * connects. This is to be fixed after unifiyng all targets.
989 rc = tgt_connect_check_sptlrpc(req, tsi->tsi_exp);
993 /* To avoid exposing partially initialized connection flags, changes up
994 * to this point have been staged in reply->ocd_connect_flags. Now that
995 * connection handling has completed successfully, atomically update
996 * the connect flags in the shared export data structure. LU-1623 */
997 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_CONNECT_DATA);
998 spin_lock(&tsi->tsi_exp->exp_lock);
999 *exp_connect_flags_ptr(tsi->tsi_exp) = reply->ocd_connect_flags;
1000 if (reply->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1001 *exp_connect_flags2_ptr(tsi->tsi_exp) =
1002 reply->ocd_connect_flags2;
1003 tsi->tsi_exp->exp_connect_data.ocd_brw_size = reply->ocd_brw_size;
1004 spin_unlock(&tsi->tsi_exp->exp_lock);
1006 if (strcmp(tsi->tsi_exp->exp_obd->obd_type->typ_name,
1007 LUSTRE_MDT_NAME) == 0) {
1008 rc = req_check_sepol(tsi->tsi_pill);
1015 obd_disconnect(class_export_get(tsi->tsi_exp));
1018 EXPORT_SYMBOL(tgt_connect);
1020 int tgt_disconnect(struct tgt_session_info *tsi)
1026 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_DISCONNECT_DELAY, cfs_fail_val);
1028 rc = target_handle_disconnect(tgt_ses_req(tsi));
1030 RETURN(err_serious(rc));
1034 EXPORT_SYMBOL(tgt_disconnect);
1037 * Unified target OBD handlers
1039 int tgt_obd_ping(struct tgt_session_info *tsi)
1045 /* The target-specific part of OBD_PING request handling.
1046 * It controls Filter Modification Data (FMD) expiration each time
1049 * Valid only for replayable targets, e.g. MDT and OFD
1051 if (tsi->tsi_exp->exp_obd->obd_replayable)
1052 tgt_fmd_expire(tsi->tsi_exp);
1054 rc = req_capsule_server_pack(tsi->tsi_pill);
1056 RETURN(err_serious(rc));
1060 EXPORT_SYMBOL(tgt_obd_ping);
1062 int tgt_obd_log_cancel(struct tgt_session_info *tsi)
1064 return err_serious(-EOPNOTSUPP);
1067 int tgt_send_buffer(struct tgt_session_info *tsi, struct lu_rdbuf *rdbuf)
1069 struct ptlrpc_request *req = tgt_ses_req(tsi);
1070 struct obd_export *exp = req->rq_export;
1071 struct ptlrpc_bulk_desc *desc;
1077 desc = ptlrpc_prep_bulk_exp(req, rdbuf->rb_nbufs, 1,
1078 PTLRPC_BULK_PUT_SOURCE | PTLRPC_BULK_BUF_KVEC,
1079 MDS_BULK_PORTAL, &ptlrpc_bulk_kvec_ops);
1083 for (i = 0; i < rdbuf->rb_nbufs; i++)
1084 desc->bd_frag_ops->add_iov_frag(desc,
1085 rdbuf->rb_bufs[i].lb_buf,
1086 rdbuf->rb_bufs[i].lb_len);
1088 rc = target_bulk_io(exp, desc);
1089 ptlrpc_free_bulk(desc);
1092 EXPORT_SYMBOL(tgt_send_buffer);
1094 int tgt_sendpage(struct tgt_session_info *tsi, struct lu_rdpg *rdpg, int nob)
1096 struct ptlrpc_request *req = tgt_ses_req(tsi);
1097 struct obd_export *exp = req->rq_export;
1098 struct ptlrpc_bulk_desc *desc;
1106 desc = ptlrpc_prep_bulk_exp(req, rdpg->rp_npages, 1,
1107 PTLRPC_BULK_PUT_SOURCE |
1108 PTLRPC_BULK_BUF_KIOV,
1110 &ptlrpc_bulk_kiov_pin_ops);
1114 if (!(exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE))
1115 /* old client requires reply size in it's PAGE_SIZE,
1116 * which is rdpg->rp_count */
1117 nob = rdpg->rp_count;
1119 for (i = 0, tmpcount = nob; i < rdpg->rp_npages && tmpcount > 0;
1120 i++, tmpcount -= tmpsize) {
1121 tmpsize = min_t(int, tmpcount, PAGE_SIZE);
1122 desc->bd_frag_ops->add_kiov_frag(desc, rdpg->rp_pages[i], 0,
1126 LASSERT(desc->bd_nob == nob);
1127 rc = target_bulk_io(exp, desc);
1128 ptlrpc_free_bulk(desc);
1131 EXPORT_SYMBOL(tgt_sendpage);
1134 * OBD_IDX_READ handler
1136 static int tgt_obd_idx_read(struct tgt_session_info *tsi)
1138 struct tgt_thread_info *tti = tgt_th_info(tsi->tsi_env);
1139 struct lu_rdpg *rdpg = &tti->tti_u.rdpg.tti_rdpg;
1140 struct idx_info *req_ii, *rep_ii;
1145 memset(rdpg, 0, sizeof(*rdpg));
1146 req_capsule_set(tsi->tsi_pill, &RQF_OBD_IDX_READ);
1148 /* extract idx_info buffer from request & reply */
1149 req_ii = req_capsule_client_get(tsi->tsi_pill, &RMF_IDX_INFO);
1150 if (req_ii == NULL || req_ii->ii_magic != IDX_INFO_MAGIC)
1151 RETURN(err_serious(-EPROTO));
1153 rc = req_capsule_server_pack(tsi->tsi_pill);
1155 RETURN(err_serious(rc));
1157 rep_ii = req_capsule_server_get(tsi->tsi_pill, &RMF_IDX_INFO);
1159 RETURN(err_serious(-EFAULT));
1160 rep_ii->ii_magic = IDX_INFO_MAGIC;
1162 /* extract hash to start with */
1163 rdpg->rp_hash = req_ii->ii_hash_start;
1165 /* extract requested attributes */
1166 rdpg->rp_attrs = req_ii->ii_attrs;
1168 /* check that fid packed in request is valid and supported */
1169 if (!fid_is_sane(&req_ii->ii_fid))
1171 rep_ii->ii_fid = req_ii->ii_fid;
1174 rep_ii->ii_flags = req_ii->ii_flags;
1176 /* compute number of pages to allocate, ii_count is the number of 4KB
1178 if (req_ii->ii_count <= 0)
1179 GOTO(out, rc = -EFAULT);
1180 rdpg->rp_count = min_t(unsigned int, req_ii->ii_count << LU_PAGE_SHIFT,
1181 exp_max_brw_size(tsi->tsi_exp));
1182 rdpg->rp_npages = (rdpg->rp_count + PAGE_SIZE - 1) >> PAGE_SHIFT;
1184 /* allocate pages to store the containers */
1185 OBD_ALLOC(rdpg->rp_pages, rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
1186 if (rdpg->rp_pages == NULL)
1187 GOTO(out, rc = -ENOMEM);
1188 for (i = 0; i < rdpg->rp_npages; i++) {
1189 rdpg->rp_pages[i] = alloc_page(GFP_NOFS);
1190 if (rdpg->rp_pages[i] == NULL)
1191 GOTO(out, rc = -ENOMEM);
1194 /* populate pages with key/record pairs */
1195 rc = dt_index_read(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, rep_ii, rdpg);
1199 LASSERTF(rc <= rdpg->rp_count, "dt_index_read() returned more than "
1200 "asked %d > %d\n", rc, rdpg->rp_count);
1202 /* send pages to client */
1203 rc = tgt_sendpage(tsi, rdpg, rc);
1208 if (rdpg->rp_pages) {
1209 for (i = 0; i < rdpg->rp_npages; i++)
1210 if (rdpg->rp_pages[i])
1211 __free_page(rdpg->rp_pages[i]);
1212 OBD_FREE(rdpg->rp_pages,
1213 rdpg->rp_npages * sizeof(rdpg->rp_pages[0]));
1218 struct tgt_handler tgt_obd_handlers[] = {
1219 TGT_OBD_HDL (0, OBD_PING, tgt_obd_ping),
1220 TGT_OBD_HDL (0, OBD_IDX_READ, tgt_obd_idx_read)
1222 EXPORT_SYMBOL(tgt_obd_handlers);
1224 int tgt_sync(const struct lu_env *env, struct lu_target *tgt,
1225 struct dt_object *obj, __u64 start, __u64 end)
1231 /* if no objid is specified, it means "sync whole filesystem" */
1233 rc = dt_sync(env, tgt->lut_bottom);
1234 } else if (dt_version_get(env, obj) >
1235 tgt->lut_obd->obd_last_committed) {
1236 rc = dt_object_sync(env, obj, start, end);
1238 atomic_inc(&tgt->lut_sync_count);
1242 EXPORT_SYMBOL(tgt_sync);
1244 * Unified target DLM handlers.
1248 * Unified target BAST
1250 * Ensure data and metadata are synced to disk when lock is canceled if Sync on
1251 * Cancel (SOC) is enabled. If it's extent lock, normally sync obj is enough,
1252 * but if it's cross-MDT lock, because remote object version is not set, a
1253 * filesystem sync is needed.
1255 * \param lock server side lock
1256 * \param desc lock desc
1257 * \param data ldlm_cb_set_arg
1258 * \param flag indicates whether this cancelling or blocking callback
1259 * \retval 0 on success
1260 * \retval negative number on error
1262 static int tgt_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1263 void *data, int flag)
1266 struct lu_target *tgt;
1267 struct dt_object *obj = NULL;
1273 tgt = class_exp2tgt(lock->l_export);
1275 if (unlikely(tgt == NULL)) {
1276 CDEBUG(D_ERROR, "%s: No target for connected export\n",
1277 class_exp2obd(lock->l_export)->obd_name);
1281 if (flag == LDLM_CB_CANCELING &&
1282 (lock->l_granted_mode & (LCK_EX | LCK_PW | LCK_GROUP)) &&
1283 (tgt->lut_sync_lock_cancel == SYNC_LOCK_CANCEL_ALWAYS ||
1284 (tgt->lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING &&
1285 ldlm_is_cbpending(lock))) &&
1286 ((exp_connect_flags(lock->l_export) & OBD_CONNECT_MDS_MDS) ||
1287 lock->l_resource->lr_type == LDLM_EXTENT)) {
1289 __u64 end = OBD_OBJECT_EOF;
1291 rc = lu_env_init(&env, LCT_DT_THREAD);
1292 if (unlikely(rc != 0))
1295 ost_fid_from_resid(&fid, &lock->l_resource->lr_name,
1296 tgt->lut_lsd.lsd_osd_index);
1298 if (lock->l_resource->lr_type == LDLM_EXTENT) {
1299 obj = dt_locate(&env, tgt->lut_bottom, &fid);
1301 GOTO(err_env, rc = PTR_ERR(obj));
1303 if (!dt_object_exists(obj))
1304 GOTO(err_put, rc = -ENOENT);
1306 start = lock->l_policy_data.l_extent.start;
1307 end = lock->l_policy_data.l_extent.end;
1310 rc = tgt_sync(&env, tgt, obj, start, end);
1312 CERROR("%s: syncing "DFID" (%llu-%llu) on lock "
1313 "cancel: rc = %d\n",
1314 tgt_name(tgt), PFID(&fid),
1315 lock->l_policy_data.l_extent.start,
1316 lock->l_policy_data.l_extent.end, rc);
1320 dt_object_put(&env, obj);
1325 rc = ldlm_server_blocking_ast(lock, desc, data, flag);
1329 static struct ldlm_callback_suite tgt_dlm_cbs = {
1330 .lcs_completion = ldlm_server_completion_ast,
1331 .lcs_blocking = tgt_blocking_ast,
1332 .lcs_glimpse = ldlm_server_glimpse_ast
1335 int tgt_enqueue(struct tgt_session_info *tsi)
1337 struct ptlrpc_request *req = tgt_ses_req(tsi);
1342 * tsi->tsi_dlm_req was already swapped and (if necessary) converted,
1343 * tsi->tsi_dlm_cbs was set by the *_req_handle() function.
1345 LASSERT(tsi->tsi_dlm_req != NULL);
1346 rc = ldlm_handle_enqueue0(tsi->tsi_exp->exp_obd->obd_namespace, req,
1347 tsi->tsi_dlm_req, &tgt_dlm_cbs);
1349 RETURN(err_serious(rc));
1351 switch (LUT_FAIL_CLASS(tsi->tsi_reply_fail_id)) {
1353 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_LDLM_REPLY_NET;
1356 tsi->tsi_reply_fail_id = OBD_FAIL_OST_LDLM_REPLY_NET;
1359 tsi->tsi_reply_fail_id = OBD_FAIL_MGS_LDLM_REPLY_NET;
1362 tsi->tsi_reply_fail_id = OBD_FAIL_LDLM_REPLY;
1365 RETURN(req->rq_status);
1367 EXPORT_SYMBOL(tgt_enqueue);
1369 int tgt_convert(struct tgt_session_info *tsi)
1371 struct ptlrpc_request *req = tgt_ses_req(tsi);
1375 LASSERT(tsi->tsi_dlm_req);
1376 rc = ldlm_handle_convert0(req, tsi->tsi_dlm_req);
1378 RETURN(err_serious(rc));
1380 RETURN(req->rq_status);
1383 int tgt_bl_callback(struct tgt_session_info *tsi)
1385 return err_serious(-EOPNOTSUPP);
1388 int tgt_cp_callback(struct tgt_session_info *tsi)
1390 return err_serious(-EOPNOTSUPP);
1393 /* generic LDLM target handler */
1394 struct tgt_handler tgt_dlm_handlers[] = {
1395 TGT_DLM_HDL(HAS_KEY, LDLM_ENQUEUE, tgt_enqueue),
1396 TGT_DLM_HDL(HAS_KEY, LDLM_CONVERT, tgt_convert),
1397 TGT_DLM_HDL_VAR(0, LDLM_BL_CALLBACK, tgt_bl_callback),
1398 TGT_DLM_HDL_VAR(0, LDLM_CP_CALLBACK, tgt_cp_callback)
1400 EXPORT_SYMBOL(tgt_dlm_handlers);
1403 * Unified target LLOG handlers.
1405 int tgt_llog_open(struct tgt_session_info *tsi)
1411 rc = llog_origin_handle_open(tgt_ses_req(tsi));
1415 EXPORT_SYMBOL(tgt_llog_open);
1417 int tgt_llog_read_header(struct tgt_session_info *tsi)
1423 rc = llog_origin_handle_read_header(tgt_ses_req(tsi));
1427 EXPORT_SYMBOL(tgt_llog_read_header);
1429 int tgt_llog_next_block(struct tgt_session_info *tsi)
1435 rc = llog_origin_handle_next_block(tgt_ses_req(tsi));
1439 EXPORT_SYMBOL(tgt_llog_next_block);
1441 int tgt_llog_prev_block(struct tgt_session_info *tsi)
1447 rc = llog_origin_handle_prev_block(tgt_ses_req(tsi));
1451 EXPORT_SYMBOL(tgt_llog_prev_block);
1453 /* generic llog target handler */
1454 struct tgt_handler tgt_llog_handlers[] = {
1455 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, tgt_llog_open),
1456 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
1457 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
1458 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
1460 EXPORT_SYMBOL(tgt_llog_handlers);
1463 * sec context handlers
1465 /* XXX: Implement based on mdt_sec_ctx_handle()? */
1466 static int tgt_sec_ctx_handle(struct tgt_session_info *tsi)
1471 struct tgt_handler tgt_sec_ctx_handlers[] = {
1472 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT, tgt_sec_ctx_handle),
1473 TGT_SEC_HDL_VAR(0, SEC_CTX_INIT_CONT, tgt_sec_ctx_handle),
1474 TGT_SEC_HDL_VAR(0, SEC_CTX_FINI, tgt_sec_ctx_handle),
1476 EXPORT_SYMBOL(tgt_sec_ctx_handlers);
1478 int (*tgt_lfsck_in_notify_local)(const struct lu_env *env,
1479 struct dt_device *key,
1480 struct lfsck_req_local *lrl,
1481 struct thandle *th) = NULL;
1483 void tgt_register_lfsck_in_notify_local(int (*notify)(const struct lu_env *,
1485 struct lfsck_req_local *,
1488 tgt_lfsck_in_notify_local = notify;
1490 EXPORT_SYMBOL(tgt_register_lfsck_in_notify_local);
1492 int (*tgt_lfsck_in_notify)(const struct lu_env *env,
1493 struct dt_device *key,
1494 struct lfsck_request *lr) = NULL;
1496 void tgt_register_lfsck_in_notify(int (*notify)(const struct lu_env *,
1498 struct lfsck_request *))
1500 tgt_lfsck_in_notify = notify;
1502 EXPORT_SYMBOL(tgt_register_lfsck_in_notify);
1504 static int (*tgt_lfsck_query)(const struct lu_env *env,
1505 struct dt_device *key,
1506 struct lfsck_request *req,
1507 struct lfsck_reply *rep,
1508 struct lfsck_query *que) = NULL;
1510 void tgt_register_lfsck_query(int (*query)(const struct lu_env *,
1512 struct lfsck_request *,
1513 struct lfsck_reply *,
1514 struct lfsck_query *))
1516 tgt_lfsck_query = query;
1518 EXPORT_SYMBOL(tgt_register_lfsck_query);
1520 /* LFSCK request handlers */
1521 static int tgt_handle_lfsck_notify(struct tgt_session_info *tsi)
1523 const struct lu_env *env = tsi->tsi_env;
1524 struct dt_device *key = tsi->tsi_tgt->lut_bottom;
1525 struct lfsck_request *lr;
1529 lr = req_capsule_client_get(tsi->tsi_pill, &RMF_LFSCK_REQUEST);
1533 rc = tgt_lfsck_in_notify(env, key, lr);
1538 static int tgt_handle_lfsck_query(struct tgt_session_info *tsi)
1540 struct lfsck_request *request;
1541 struct lfsck_reply *reply;
1545 request = req_capsule_client_get(tsi->tsi_pill, &RMF_LFSCK_REQUEST);
1546 if (request == NULL)
1549 reply = req_capsule_server_get(tsi->tsi_pill, &RMF_LFSCK_REPLY);
1553 rc = tgt_lfsck_query(tsi->tsi_env, tsi->tsi_tgt->lut_bottom,
1554 request, reply, NULL);
1556 RETURN(rc < 0 ? rc : 0);
1559 struct tgt_handler tgt_lfsck_handlers[] = {
1560 TGT_LFSCK_HDL(HAS_REPLY, LFSCK_NOTIFY, tgt_handle_lfsck_notify),
1561 TGT_LFSCK_HDL(HAS_REPLY, LFSCK_QUERY, tgt_handle_lfsck_query),
1563 EXPORT_SYMBOL(tgt_lfsck_handlers);
1566 * initialize per-thread page pool (bug 5137).
1568 int tgt_io_thread_init(struct ptlrpc_thread *thread)
1570 struct tgt_thread_big_cache *tbc;
1574 LASSERT(thread != NULL);
1575 LASSERT(thread->t_data == NULL);
1577 OBD_ALLOC_LARGE(tbc, sizeof(*tbc));
1580 thread->t_data = tbc;
1583 EXPORT_SYMBOL(tgt_io_thread_init);
1586 * free per-thread pool created by tgt_thread_init().
1588 void tgt_io_thread_done(struct ptlrpc_thread *thread)
1590 struct tgt_thread_big_cache *tbc;
1594 LASSERT(thread != NULL);
1597 * be prepared to handle partially-initialized pools (because this is
1598 * called from ost_io_thread_init() for cleanup.
1600 tbc = thread->t_data;
1602 OBD_FREE_LARGE(tbc, sizeof(*tbc));
1603 thread->t_data = NULL;
1607 EXPORT_SYMBOL(tgt_io_thread_done);
1610 * Helper function for getting Data-on-MDT file server DLM lock
1611 * if asked by client.
1613 int tgt_mdt_data_lock(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1614 struct lustre_handle *lh, int mode, __u64 *flags)
1616 union ldlm_policy_data policy = {
1617 .l_inodebits.bits = MDS_INODELOCK_DOM,
1623 LASSERT(lh != NULL);
1624 LASSERT(ns != NULL);
1625 LASSERT(!lustre_handle_is_used(lh));
1627 rc = ldlm_cli_enqueue_local(NULL, ns, res_id, LDLM_IBITS, &policy, mode,
1628 flags, ldlm_blocking_ast,
1629 ldlm_completion_ast, ldlm_glimpse_ast,
1630 NULL, 0, LVB_T_NONE, NULL, lh);
1632 RETURN(rc == ELDLM_OK ? 0 : -EIO);
1634 EXPORT_SYMBOL(tgt_mdt_data_lock);
1636 void tgt_mdt_data_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1638 LASSERT(lustre_handle_is_used(lh));
1639 ldlm_lock_decref(lh, mode);
1641 EXPORT_SYMBOL(tgt_mdt_data_unlock);
1644 * Helper function for getting server side [start, start+count] DLM lock
1645 * if asked by client.
1647 int tgt_extent_lock(const struct lu_env *env, struct ldlm_namespace *ns,
1648 struct ldlm_res_id *res_id, __u64 start, __u64 end,
1649 struct lustre_handle *lh, int mode, __u64 *flags)
1651 union ldlm_policy_data policy;
1656 LASSERT(lh != NULL);
1657 LASSERT(ns != NULL);
1658 LASSERT(!lustre_handle_is_used(lh));
1660 policy.l_extent.gid = 0;
1661 policy.l_extent.start = start & PAGE_MASK;
1664 * If ->o_blocks is EOF it means "lock till the end of the file".
1665 * Otherwise, it's size of an extent or hole being punched (in bytes).
1667 if (end == OBD_OBJECT_EOF || end < start)
1668 policy.l_extent.end = OBD_OBJECT_EOF;
1670 policy.l_extent.end = end | ~PAGE_MASK;
1672 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_EXTENT, &policy,
1673 mode, flags, ldlm_blocking_ast,
1674 ldlm_completion_ast, ldlm_glimpse_ast,
1675 NULL, 0, LVB_T_NONE, NULL, lh);
1676 RETURN(rc == ELDLM_OK ? 0 : -EIO);
1678 EXPORT_SYMBOL(tgt_extent_lock);
1680 void tgt_extent_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1682 LASSERT(lustre_handle_is_used(lh));
1683 ldlm_lock_decref(lh, mode);
1685 EXPORT_SYMBOL(tgt_extent_unlock);
1687 static int tgt_brw_lock(const struct lu_env *env, struct obd_export *exp,
1688 struct ldlm_res_id *res_id, struct obd_ioobj *obj,
1689 struct niobuf_remote *nb, struct lustre_handle *lh,
1690 enum ldlm_mode mode)
1692 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
1694 int nrbufs = obj->ioo_bufcnt;
1700 LASSERT(mode == LCK_PR || mode == LCK_PW);
1701 LASSERT(!lustre_handle_is_used(lh));
1703 if (ns->ns_obd->obd_recovering)
1706 if (nrbufs == 0 || !(nb[0].rnb_flags & OBD_BRW_SRVLOCK))
1709 for (i = 1; i < nrbufs; i++)
1710 if (!(nb[i].rnb_flags & OBD_BRW_SRVLOCK))
1713 /* MDT IO for data-on-mdt */
1714 if (exp->exp_connect_data.ocd_connect_flags & OBD_CONNECT_IBITS)
1715 rc = tgt_mdt_data_lock(ns, res_id, lh, mode, &flags);
1717 rc = tgt_extent_lock(env, ns, res_id, nb[0].rnb_offset,
1718 nb[nrbufs - 1].rnb_offset +
1719 nb[nrbufs - 1].rnb_len - 1,
1724 static void tgt_brw_unlock(struct obd_ioobj *obj, struct niobuf_remote *niob,
1725 struct lustre_handle *lh, enum ldlm_mode mode)
1729 LASSERT(mode == LCK_PR || mode == LCK_PW);
1730 LASSERT((obj->ioo_bufcnt > 0 &&
1731 (niob[0].rnb_flags & OBD_BRW_SRVLOCK)) ==
1732 lustre_handle_is_used(lh));
1734 if (lustre_handle_is_used(lh))
1735 tgt_extent_unlock(lh, mode);
1738 static int tgt_checksum_niobuf(struct lu_target *tgt,
1739 struct niobuf_local *local_nb, int npages,
1740 int opc, enum cksum_types cksum_type,
1743 struct ahash_request *req;
1744 unsigned int bufsize;
1746 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1748 req = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1750 CERROR("%s: unable to initialize checksum hash %s\n",
1751 tgt_name(tgt), cfs_crypto_hash_name(cfs_alg));
1752 return PTR_ERR(req);
1755 CDEBUG(D_INFO, "Checksum for algo %s\n", cfs_crypto_hash_name(cfs_alg));
1756 for (i = 0; i < npages; i++) {
1757 /* corrupt the data before we compute the checksum, to
1758 * simulate a client->OST data error */
1759 if (i == 0 && opc == OST_WRITE &&
1760 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) {
1761 int off = local_nb[i].lnb_page_offset & ~PAGE_MASK;
1762 int len = local_nb[i].lnb_len;
1763 struct page *np = tgt_page_to_corrupt;
1766 char *ptr = ll_kmap_atomic(local_nb[i].lnb_page,
1768 char *ptr2 = page_address(np);
1770 memcpy(ptr2 + off, ptr + off, len);
1771 memcpy(ptr2 + off, "bad3", min(4, len));
1772 ll_kunmap_atomic(ptr, KM_USER0);
1774 /* LU-8376 to preserve original index for
1775 * display in dump_all_bulk_pages() */
1778 cfs_crypto_hash_update_page(req, np, off,
1782 CERROR("%s: can't alloc page for corruption\n",
1786 cfs_crypto_hash_update_page(req, local_nb[i].lnb_page,
1787 local_nb[i].lnb_page_offset & ~PAGE_MASK,
1788 local_nb[i].lnb_len);
1790 /* corrupt the data after we compute the checksum, to
1791 * simulate an OST->client data error */
1792 if (i == 0 && opc == OST_READ &&
1793 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND)) {
1794 int off = local_nb[i].lnb_page_offset & ~PAGE_MASK;
1795 int len = local_nb[i].lnb_len;
1796 struct page *np = tgt_page_to_corrupt;
1799 char *ptr = ll_kmap_atomic(local_nb[i].lnb_page,
1801 char *ptr2 = page_address(np);
1803 memcpy(ptr2 + off, ptr + off, len);
1804 memcpy(ptr2 + off, "bad4", min(4, len));
1805 ll_kunmap_atomic(ptr, KM_USER0);
1807 /* LU-8376 to preserve original index for
1808 * display in dump_all_bulk_pages() */
1811 cfs_crypto_hash_update_page(req, np, off,
1815 CERROR("%s: can't alloc page for corruption\n",
1821 bufsize = sizeof(*cksum);
1822 err = cfs_crypto_hash_final(req, (unsigned char *)cksum, &bufsize);
1827 char dbgcksum_file_name[PATH_MAX];
1829 static void dump_all_bulk_pages(struct obdo *oa, int count,
1830 struct niobuf_local *local_nb,
1831 __u32 server_cksum, __u32 client_cksum)
1838 /* will only keep dump of pages on first error for the same range in
1839 * file/fid, not during the resends/retries. */
1840 snprintf(dbgcksum_file_name, sizeof(dbgcksum_file_name),
1841 "%s-checksum_dump-ost-"DFID":[%llu-%llu]-%x-%x",
1842 (strncmp(libcfs_debug_file_path_arr, "NONE", 4) != 0 ?
1843 libcfs_debug_file_path_arr :
1844 LIBCFS_DEBUG_FILE_PATH_DEFAULT),
1845 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1846 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1847 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1848 local_nb[0].lnb_file_offset,
1849 local_nb[count-1].lnb_file_offset +
1850 local_nb[count-1].lnb_len - 1, client_cksum, server_cksum);
1851 filp = filp_open(dbgcksum_file_name,
1852 O_CREAT | O_EXCL | O_WRONLY | O_LARGEFILE, 0600);
1856 CDEBUG(D_INFO, "%s: can't open to dump pages with "
1857 "checksum error: rc = %d\n", dbgcksum_file_name,
1860 CERROR("%s: can't open to dump pages with checksum "
1861 "error: rc = %d\n", dbgcksum_file_name, rc);
1865 for (i = 0; i < count; i++) {
1866 len = local_nb[i].lnb_len;
1867 buf = kmap(local_nb[i].lnb_page);
1869 rc = cfs_kernel_write(filp, buf, len, &filp->f_pos);
1871 CERROR("%s: wanted to write %u but got %d "
1872 "error\n", dbgcksum_file_name, len, rc);
1877 CDEBUG(D_INFO, "%s: wrote %d bytes\n",
1878 dbgcksum_file_name, rc);
1880 kunmap(local_nb[i].lnb_page);
1883 rc = vfs_fsync_range(filp, 0, LLONG_MAX, 1);
1885 CERROR("%s: sync returns %d\n", dbgcksum_file_name, rc);
1886 filp_close(filp, NULL);
1889 static int check_read_checksum(struct niobuf_local *local_nb, int npages,
1890 struct obd_export *exp, struct obdo *oa,
1891 const struct lnet_process_id *peer,
1892 __u32 client_cksum, __u32 server_cksum,
1893 enum cksum_types server_cksum_type)
1896 enum cksum_types cksum_type;
1899 /* unlikely to happen and only if resend does not occur due to cksum
1900 * control failure on Client */
1901 if (unlikely(server_cksum == client_cksum)) {
1902 CDEBUG(D_PAGE, "checksum %x confirmed upon retry\n",
1907 if (exp->exp_obd->obd_checksum_dump)
1908 dump_all_bulk_pages(oa, npages, local_nb, server_cksum,
1911 cksum_type = obd_cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1914 if (cksum_type != server_cksum_type)
1915 msg = "the server may have not used the checksum type specified"
1916 " in the original request - likely a protocol problem";
1918 msg = "should have changed on the client or in transit";
1920 start = local_nb[0].lnb_file_offset;
1921 end = local_nb[npages-1].lnb_file_offset +
1922 local_nb[npages-1].lnb_len - 1;
1924 LCONSOLE_ERROR_MSG(0x132, "%s: BAD READ CHECKSUM: %s: from %s inode "
1925 DFID " object "DOSTID" extent [%llu-%llu], client returned csum"
1926 " %x (type %x), server csum %x (type %x)\n",
1927 exp->exp_obd->obd_name,
1928 msg, libcfs_nid2str(peer->nid),
1929 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : 0ULL,
1930 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1931 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1933 start, end, client_cksum, cksum_type, server_cksum,
1939 static int tgt_pages2shortio(struct niobuf_local *local, int npages,
1940 unsigned char *buf, int size)
1942 int i, off, len, copied = size;
1945 for (i = 0; i < npages; i++) {
1946 off = local[i].lnb_page_offset & ~PAGE_MASK;
1947 len = local[i].lnb_len;
1949 CDEBUG(D_PAGE, "index %d offset = %d len = %d left = %d\n",
1954 ptr = ll_kmap_atomic(local[i].lnb_page, KM_USER0);
1955 memcpy(buf + off, ptr, len);
1956 ll_kunmap_atomic(ptr, KM_USER0);
1960 return copied - size;
1963 static int tgt_checksum_niobuf_t10pi(struct lu_target *tgt,
1964 struct niobuf_local *local_nb,
1965 int npages, int opc,
1966 obd_dif_csum_fn *fn,
1970 enum cksum_types t10_cksum_type = tgt->lut_dt_conf.ddp_t10_cksum_type;
1971 unsigned char cfs_alg = cksum_obd2cfs(OBD_CKSUM_T10_TOP);
1972 const char *obd_name = tgt->lut_obd->obd_name;
1973 struct ahash_request *req;
1974 unsigned int bufsize;
1975 unsigned char *buffer;
1976 struct page *__page;
1979 int used_number = 0;
1985 __page = alloc_page(GFP_KERNEL);
1989 req = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1991 CERROR("%s: unable to initialize checksum hash %s\n",
1992 tgt_name(tgt), cfs_crypto_hash_name(cfs_alg));
1993 return PTR_ERR(req);
1996 buffer = kmap(__page);
1997 guard_start = (__u16 *)buffer;
1998 guard_number = PAGE_SIZE / sizeof(*guard_start);
1999 for (i = 0; i < npages; i++) {
2000 /* corrupt the data before we compute the checksum, to
2001 * simulate a client->OST data error */
2002 if (i == 0 && opc == OST_WRITE &&
2003 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) {
2004 int off = local_nb[i].lnb_page_offset & ~PAGE_MASK;
2005 int len = local_nb[i].lnb_len;
2006 struct page *np = tgt_page_to_corrupt;
2009 char *ptr = ll_kmap_atomic(local_nb[i].lnb_page,
2011 char *ptr2 = page_address(np);
2013 memcpy(ptr2 + off, ptr + off, len);
2014 memcpy(ptr2 + off, "bad3", min(4, len));
2015 ll_kunmap_atomic(ptr, KM_USER0);
2017 /* LU-8376 to preserve original index for
2018 * display in dump_all_bulk_pages() */
2021 cfs_crypto_hash_update_page(req, np, off,
2025 CERROR("%s: can't alloc page for corruption\n",
2031 * The left guard number should be able to hold checksums of a
2034 if (t10_cksum_type && opc == OST_READ &&
2035 local_nb[i].lnb_guard_disk) {
2036 used = DIV_ROUND_UP(local_nb[i].lnb_len, sector_size);
2037 if (used > (guard_number - used_number)) {
2041 memcpy(guard_start + used_number,
2042 local_nb[i].lnb_guards,
2043 used * sizeof(*local_nb[i].lnb_guards));
2045 rc = obd_page_dif_generate_buffer(obd_name,
2046 local_nb[i].lnb_page,
2047 local_nb[i].lnb_page_offset & ~PAGE_MASK,
2048 local_nb[i].lnb_len, guard_start + used_number,
2049 guard_number - used_number, &used, sector_size,
2055 LASSERT(used <= MAX_GUARD_NUMBER);
2057 * If disk support T10PI checksum, copy guards to local_nb.
2058 * If the write is partial page, do not use the guards for bio
2059 * submission since the data might not be full-sector. The bio
2060 * guards will be generated later based on the full sectors. If
2061 * the sector size is 512B rather than 4 KB, or the page size
2062 * is larger than 4KB, this might drop some useful guards for
2063 * partial page write, but it will only add minimal extra time
2064 * of checksum calculation.
2066 if (t10_cksum_type && opc == OST_WRITE &&
2067 local_nb[i].lnb_len == PAGE_SIZE) {
2068 local_nb[i].lnb_guard_rpc = 1;
2069 memcpy(local_nb[i].lnb_guards,
2070 guard_start + used_number,
2071 used * sizeof(*local_nb[i].lnb_guards));
2074 used_number += used;
2075 if (used_number == guard_number) {
2076 cfs_crypto_hash_update_page(req, __page, 0,
2077 used_number * sizeof(*guard_start));
2081 /* corrupt the data after we compute the checksum, to
2082 * simulate an OST->client data error */
2083 if (unlikely(i == 0 && opc == OST_READ &&
2084 OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND))) {
2085 int off = local_nb[i].lnb_page_offset & ~PAGE_MASK;
2086 int len = local_nb[i].lnb_len;
2087 struct page *np = tgt_page_to_corrupt;
2090 char *ptr = ll_kmap_atomic(local_nb[i].lnb_page,
2092 char *ptr2 = page_address(np);
2094 memcpy(ptr2 + off, ptr + off, len);
2095 memcpy(ptr2 + off, "bad4", min(4, len));
2096 ll_kunmap_atomic(ptr, KM_USER0);
2098 /* LU-8376 to preserve original index for
2099 * display in dump_all_bulk_pages() */
2102 cfs_crypto_hash_update_page(req, np, off,
2106 CERROR("%s: can't alloc page for corruption\n",
2115 if (used_number != 0)
2116 cfs_crypto_hash_update_page(req, __page, 0,
2117 used_number * sizeof(*guard_start));
2119 bufsize = sizeof(cksum);
2120 rc = cfs_crypto_hash_final(req, (unsigned char *)&cksum, &bufsize);
2125 __free_page(__page);
2129 static int tgt_checksum_niobuf_rw(struct lu_target *tgt,
2130 enum cksum_types cksum_type,
2131 struct niobuf_local *local_nb,
2132 int npages, int opc, u32 *check_sum)
2134 obd_dif_csum_fn *fn = NULL;
2135 int sector_size = 0;
2139 obd_t10_cksum2dif(cksum_type, &fn, §or_size);
2142 rc = tgt_checksum_niobuf_t10pi(tgt, local_nb, npages,
2143 opc, fn, sector_size,
2146 rc = tgt_checksum_niobuf(tgt, local_nb, npages, opc,
2147 cksum_type, check_sum);
2151 int tgt_brw_read(struct tgt_session_info *tsi)
2153 struct ptlrpc_request *req = tgt_ses_req(tsi);
2154 struct ptlrpc_bulk_desc *desc = NULL;
2155 struct obd_export *exp = tsi->tsi_exp;
2156 struct niobuf_remote *remote_nb;
2157 struct niobuf_local *local_nb;
2158 struct obd_ioobj *ioo;
2159 struct ost_body *body, *repbody;
2160 struct lustre_handle lockh = { 0 };
2161 int npages, nob = 0, rc, i, no_reply = 0,
2163 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
2164 const char *obd_name = exp->exp_obd->obd_name;
2168 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL &&
2169 ptlrpc_req2svc(req)->srv_req_portal != MDS_IO_PORTAL) {
2170 CERROR("%s: deny read request from %s to portal %u\n",
2171 tgt_name(tsi->tsi_tgt),
2172 obd_export_nid2str(req->rq_export),
2173 ptlrpc_req2svc(req)->srv_req_portal);
2177 req->rq_bulk_read = 1;
2179 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
2182 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
2183 cfs_fail_val : (obd_timeout + 1) / 4);
2185 /* Check if there is eviction in progress, and if so, wait for it to
2187 if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
2188 /* We do not care how long it takes */
2190 exp->exp_obd->obd_evict_inprogress_waitq,
2191 !atomic_read(&exp->exp_obd->obd_evict_inprogress));
2194 /* There must be big cache in current thread to process this request
2195 * if it is NULL then something went wrong and it wasn't allocated,
2196 * report -ENOMEM in that case */
2200 body = tsi->tsi_ost_body;
2201 LASSERT(body != NULL);
2203 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
2204 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
2206 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2207 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
2209 local_nb = tbc->local;
2211 rc = tgt_brw_lock(tsi->tsi_env, exp, &tsi->tsi_resid, ioo, remote_nb,
2217 * If getting the lock took more time than
2218 * client was willing to wait, drop it. b=11330
2220 if (ktime_get_real_seconds() > req->rq_deadline ||
2221 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
2223 CERROR("Dropping timed-out read from %s because locking object " DOSTID " took %lld seconds (limit was %lld).\n",
2224 libcfs_id2str(req->rq_peer), POSTID(&ioo->ioo_oid),
2225 ktime_get_real_seconds() - req->rq_arrival_time.tv_sec,
2226 req->rq_deadline - req->rq_arrival_time.tv_sec);
2227 GOTO(out_lock, rc = -ETIMEDOUT);
2230 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2231 repbody->oa = body->oa;
2233 npages = PTLRPC_MAX_BRW_PAGES;
2234 rc = obd_preprw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1,
2235 ioo, remote_nb, &npages, local_nb);
2239 if (body->oa.o_valid & OBD_MD_FLFLAGS &&
2240 body->oa.o_flags & OBD_FL_SHORT_IO) {
2243 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
2244 PTLRPC_BULK_PUT_SOURCE |
2245 PTLRPC_BULK_BUF_KIOV,
2247 &ptlrpc_bulk_kiov_nopin_ops);
2249 GOTO(out_commitrw, rc = -ENOMEM);
2253 npages_read = npages;
2254 for (i = 0; i < npages; i++) {
2255 int page_rc = local_nb[i].lnb_rc;
2264 if (page_rc != 0 && desc != NULL) { /* some data! */
2265 LASSERT(local_nb[i].lnb_page != NULL);
2266 desc->bd_frag_ops->add_kiov_frag
2267 (desc, local_nb[i].lnb_page,
2268 local_nb[i].lnb_page_offset & ~PAGE_MASK,
2272 if (page_rc != local_nb[i].lnb_len) { /* short read */
2273 local_nb[i].lnb_len = page_rc;
2274 npages_read = i + (page_rc != 0 ? 1 : 0);
2275 /* All subsequent pages should be 0 */
2276 while (++i < npages)
2277 LASSERT(local_nb[i].lnb_rc == 0);
2282 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
2283 u32 flag = body->oa.o_valid & OBD_MD_FLFLAGS ?
2284 body->oa.o_flags : 0;
2285 enum cksum_types cksum_type = obd_cksum_type_unpack(flag);
2287 repbody->oa.o_flags = obd_cksum_type_pack(obd_name,
2289 repbody->oa.o_valid = OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
2291 rc = tgt_checksum_niobuf_rw(tsi->tsi_tgt, cksum_type,
2292 local_nb, npages_read, OST_READ,
2293 &repbody->oa.o_cksum);
2295 GOTO(out_commitrw, rc);
2296 CDEBUG(D_PAGE, "checksum at read origin: %x\n",
2297 repbody->oa.o_cksum);
2299 /* if a resend it could be for a cksum error, so check Server
2300 * cksum with returned Client cksum (this should even cover
2301 * zero-cksum case) */
2302 if ((body->oa.o_valid & OBD_MD_FLFLAGS) &&
2303 (body->oa.o_flags & OBD_FL_RECOV_RESEND))
2304 check_read_checksum(local_nb, npages_read, exp,
2305 &body->oa, &req->rq_peer,
2307 repbody->oa.o_cksum, cksum_type);
2309 repbody->oa.o_valid = 0;
2311 /* We're finishing using body->oa as an input variable */
2313 /* Check if client was evicted while we were doing i/o before touching
2316 if (body->oa.o_valid & OBD_MD_FLFLAGS &&
2317 body->oa.o_flags & OBD_FL_SHORT_IO) {
2318 unsigned char *short_io_buf;
2321 short_io_buf = req_capsule_server_get(&req->rq_pill,
2323 short_io_size = req_capsule_get_size(&req->rq_pill,
2326 rc = tgt_pages2shortio(local_nb, npages_read,
2327 short_io_buf, short_io_size);
2329 req_capsule_shrink(&req->rq_pill,
2332 rc = rc > 0 ? 0 : rc;
2333 } else if (!CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2)) {
2334 rc = target_bulk_io(exp, desc);
2338 if (body->oa.o_valid & OBD_MD_FLFLAGS &&
2339 body->oa.o_flags & OBD_FL_SHORT_IO)
2340 req_capsule_shrink(&req->rq_pill, &RMF_SHORT_IO, 0,
2345 /* Must commit after prep above in all cases */
2346 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_READ, exp, &repbody->oa, 1, ioo,
2347 remote_nb, npages, local_nb, rc);
2349 tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PR);
2351 if (desc && !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))
2352 ptlrpc_free_bulk(desc);
2357 ptlrpc_lprocfs_brw(req, nob);
2358 } else if (no_reply) {
2359 req->rq_no_reply = 1;
2360 /* reply out callback would free */
2361 ptlrpc_req_drop_rs(req);
2362 LCONSOLE_WARN("%s: Bulk IO read error with %s (at %s), "
2363 "client will retry: rc %d\n",
2365 obd_uuid2str(&exp->exp_client_uuid),
2366 obd_export_nid2str(exp), rc);
2368 /* send a bulk after reply to simulate a network delay or reordering
2369 * by a router - Note that !desc implies short io, so there is no bulk
2371 if (unlikely(CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2)) &&
2373 CDEBUG(D_INFO, "reorder BULK\n");
2376 target_bulk_io(exp, desc);
2377 ptlrpc_free_bulk(desc);
2382 EXPORT_SYMBOL(tgt_brw_read);
2384 static int tgt_shortio2pages(struct niobuf_local *local, int npages,
2385 unsigned char *buf, unsigned int size)
2390 for (i = 0; i < npages; i++) {
2391 off = local[i].lnb_page_offset & ~PAGE_MASK;
2392 len = local[i].lnb_len;
2397 CDEBUG(D_PAGE, "index %d offset = %d len = %d left = %d\n",
2399 ptr = ll_kmap_atomic(local[i].lnb_page, KM_USER0);
2402 memcpy(ptr + off, buf, len < size ? len : size);
2403 ll_kunmap_atomic(ptr, KM_USER0);
2410 static void tgt_warn_on_cksum(struct ptlrpc_request *req,
2411 struct ptlrpc_bulk_desc *desc,
2412 struct niobuf_local *local_nb, int npages,
2413 u32 client_cksum, u32 server_cksum,
2416 struct obd_export *exp = req->rq_export;
2417 struct ost_body *body;
2421 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
2422 LASSERT(body != NULL);
2424 if (desc && req->rq_peer.nid != desc->bd_sender) {
2426 router = libcfs_nid2str(desc->bd_sender);
2429 if (exp->exp_obd->obd_checksum_dump)
2430 dump_all_bulk_pages(&body->oa, npages, local_nb, server_cksum,
2434 CDEBUG_LIMIT(D_INFO, "client csum %x, server csum %x\n",
2435 client_cksum, server_cksum);
2439 LCONSOLE_ERROR_MSG(0x168, "%s: BAD WRITE CHECKSUM: from %s%s%s inode "
2440 DFID" object "DOSTID" extent [%llu-%llu"
2441 "]: client csum %x, server csum %x\n",
2442 exp->exp_obd->obd_name, libcfs_id2str(req->rq_peer),
2444 body->oa.o_valid & OBD_MD_FLFID ?
2445 body->oa.o_parent_seq : (__u64)0,
2446 body->oa.o_valid & OBD_MD_FLFID ?
2447 body->oa.o_parent_oid : 0,
2448 body->oa.o_valid & OBD_MD_FLFID ?
2449 body->oa.o_parent_ver : 0,
2450 POSTID(&body->oa.o_oi),
2451 local_nb[0].lnb_file_offset,
2452 local_nb[npages-1].lnb_file_offset +
2453 local_nb[npages - 1].lnb_len - 1,
2454 client_cksum, server_cksum);
2457 int tgt_brw_write(struct tgt_session_info *tsi)
2459 struct ptlrpc_request *req = tgt_ses_req(tsi);
2460 struct ptlrpc_bulk_desc *desc = NULL;
2461 struct obd_export *exp = req->rq_export;
2462 struct niobuf_remote *remote_nb;
2463 struct niobuf_local *local_nb;
2464 struct obd_ioobj *ioo;
2465 struct ost_body *body, *repbody;
2466 struct lustre_handle lockh = {0};
2468 int objcount, niocount, npages;
2470 enum cksum_types cksum_type = OBD_CKSUM_CRC32;
2471 bool no_reply = false, mmap;
2472 struct tgt_thread_big_cache *tbc = req->rq_svc_thread->t_data;
2473 bool wait_sync = false;
2474 const char *obd_name = exp->exp_obd->obd_name;
2478 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL &&
2479 ptlrpc_req2svc(req)->srv_req_portal != MDS_IO_PORTAL) {
2480 CERROR("%s: deny write request from %s to portal %u\n",
2481 tgt_name(tsi->tsi_tgt),
2482 obd_export_nid2str(req->rq_export),
2483 ptlrpc_req2svc(req)->srv_req_portal);
2484 RETURN(err_serious(-EPROTO));
2487 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC))
2488 RETURN(err_serious(-ENOSPC));
2489 if (OBD_FAIL_TIMEOUT(OBD_FAIL_OST_EROFS, 1))
2490 RETURN(err_serious(-EROFS));
2492 req->rq_bulk_write = 1;
2494 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
2495 RETURN(err_serious(-EIO));
2496 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK2))
2497 RETURN(err_serious(-EFAULT));
2499 /* pause before transaction has been started */
2500 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, cfs_fail_val > 0 ?
2501 cfs_fail_val : (obd_timeout + 1) / 4);
2503 /* Delay write commit to show stale size information */
2504 CFS_FAIL_TIMEOUT(OBD_FAIL_OSC_NO_SIZE_DATA, cfs_fail_val);
2506 /* There must be big cache in current thread to process this request
2507 * if it is NULL then something went wrong and it wasn't allocated,
2508 * report -ENOMEM in that case */
2512 body = tsi->tsi_ost_body;
2513 LASSERT(body != NULL);
2515 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2516 LASSERT(ioo != NULL); /* must exists after tgt_ost_body_unpack */
2518 objcount = req_capsule_get_size(&req->rq_pill, &RMF_OBD_IOOBJ,
2519 RCL_CLIENT) / sizeof(*ioo);
2521 for (niocount = i = 0; i < objcount; i++)
2522 niocount += ioo[i].ioo_bufcnt;
2524 remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2525 LASSERT(remote_nb != NULL); /* must exists after tgt_ost_body_unpack */
2526 if (niocount != req_capsule_get_size(&req->rq_pill,
2527 &RMF_NIOBUF_REMOTE, RCL_CLIENT) /
2529 RETURN(err_serious(-EPROTO));
2531 if ((remote_nb[0].rnb_flags & OBD_BRW_MEMALLOC) &&
2532 ptlrpc_connection_is_local(exp->exp_connection))
2533 memory_pressure_set();
2535 req_capsule_set_size(&req->rq_pill, &RMF_RCS, RCL_SERVER,
2536 niocount * sizeof(*rcs));
2537 rc = req_capsule_server_pack(&req->rq_pill);
2539 GOTO(out, rc = err_serious(rc));
2541 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_PACK, cfs_fail_val);
2542 rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
2544 local_nb = tbc->local;
2546 rc = tgt_brw_lock(tsi->tsi_env, exp, &tsi->tsi_resid, ioo, remote_nb,
2552 * If getting the lock took more time than
2553 * client was willing to wait, drop it. b=11330
2555 if (ktime_get_real_seconds() > req->rq_deadline ||
2556 OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
2558 CERROR("%s: Dropping timed-out write from %s because locking object " DOSTID " took %lld seconds (limit was %lld).\n",
2559 tgt_name(tsi->tsi_tgt), libcfs_id2str(req->rq_peer),
2560 POSTID(&ioo->ioo_oid),
2561 ktime_get_real_seconds() - req->rq_arrival_time.tv_sec,
2562 req->rq_deadline - req->rq_arrival_time.tv_sec);
2563 GOTO(out_lock, rc = -ETIMEDOUT);
2566 /* Because we already sync grant info with client when reconnect,
2567 * grant info will be cleared for resent req, then fed_grant and
2568 * total_grant will not be modified in following preprw_write */
2569 if (lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) {
2570 DEBUG_REQ(D_CACHE, req, "clear resent/replay req grant info");
2571 body->oa.o_valid &= ~OBD_MD_FLGRANT;
2574 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2575 if (repbody == NULL)
2576 GOTO(out_lock, rc = -ENOMEM);
2577 repbody->oa = body->oa;
2579 npages = PTLRPC_MAX_BRW_PAGES;
2580 rc = obd_preprw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
2581 objcount, ioo, remote_nb, &npages, local_nb);
2584 if (body->oa.o_valid & OBD_MD_FLFLAGS &&
2585 body->oa.o_flags & OBD_FL_SHORT_IO) {
2586 unsigned int short_io_size;
2587 unsigned char *short_io_buf;
2589 short_io_size = req_capsule_get_size(&req->rq_pill,
2592 short_io_buf = req_capsule_client_get(&req->rq_pill,
2594 CDEBUG(D_INFO, "Client use short io for data transfer,"
2595 " size = %d\n", short_io_size);
2597 /* Copy short io buf to pages */
2598 rc = tgt_shortio2pages(local_nb, npages, short_io_buf,
2602 desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
2603 PTLRPC_BULK_GET_SINK |
2604 PTLRPC_BULK_BUF_KIOV,
2606 &ptlrpc_bulk_kiov_nopin_ops);
2608 GOTO(skip_transfer, rc = -ENOMEM);
2610 /* NB Having prepped, we must commit... */
2611 for (i = 0; i < npages; i++)
2612 desc->bd_frag_ops->add_kiov_frag(desc,
2613 local_nb[i].lnb_page,
2614 local_nb[i].lnb_page_offset & ~PAGE_MASK,
2615 local_nb[i].lnb_len);
2617 rc = sptlrpc_svc_prep_bulk(req, desc);
2619 GOTO(skip_transfer, rc);
2621 rc = target_bulk_io(exp, desc);
2627 if (body->oa.o_valid & OBD_MD_FLCKSUM && rc == 0) {
2628 static int cksum_counter;
2630 if (body->oa.o_valid & OBD_MD_FLFLAGS)
2631 cksum_type = obd_cksum_type_unpack(body->oa.o_flags);
2633 repbody->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
2634 repbody->oa.o_flags &= ~OBD_FL_CKSUM_ALL;
2635 repbody->oa.o_flags |= obd_cksum_type_pack(obd_name,
2638 rc = tgt_checksum_niobuf_rw(tsi->tsi_tgt, cksum_type,
2639 local_nb, npages, OST_WRITE,
2640 &repbody->oa.o_cksum);
2642 GOTO(out_commitrw, rc);
2646 if (unlikely(body->oa.o_cksum != repbody->oa.o_cksum)) {
2647 mmap = (body->oa.o_valid & OBD_MD_FLFLAGS &&
2648 body->oa.o_flags & OBD_FL_MMAP);
2650 tgt_warn_on_cksum(req, desc, local_nb, npages,
2652 repbody->oa.o_cksum, mmap);
2654 } else if ((cksum_counter & (-cksum_counter)) ==
2656 CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n",
2657 cksum_counter, libcfs_id2str(req->rq_peer),
2658 repbody->oa.o_cksum);
2663 /* Must commit after prep above in all cases */
2664 rc = obd_commitrw(tsi->tsi_env, OBD_BRW_WRITE, exp, &repbody->oa,
2665 objcount, ioo, remote_nb, npages, local_nb, rc);
2666 if (rc == -ENOTCONN)
2667 /* quota acquire process has been given up because
2668 * either the client has been evicted or the client
2669 * has timed out the request already */
2672 for (i = 0; i < niocount; i++) {
2673 if (!(local_nb[i].lnb_flags & OBD_BRW_ASYNC)) {
2679 * Disable sending mtime back to the client. If the client locked the
2680 * whole object, then it has already updated the mtime on its side,
2681 * otherwise it will have to glimpse anyway (see bug 21489, comment 32)
2683 repbody->oa.o_valid &= ~(OBD_MD_FLMTIME | OBD_MD_FLATIME);
2688 /* set per-requested niobuf return codes */
2689 for (i = j = 0; i < niocount; i++) {
2690 int len = remote_nb[i].rnb_len;
2695 LASSERT(j < npages);
2696 if (local_nb[j].lnb_rc < 0)
2697 rcs[i] = local_nb[j].lnb_rc;
2698 len -= local_nb[j].lnb_len;
2703 LASSERT(j == npages);
2704 ptlrpc_lprocfs_brw(req, nob);
2707 tgt_brw_unlock(ioo, remote_nb, &lockh, LCK_PW);
2709 ptlrpc_free_bulk(desc);
2711 if (unlikely(no_reply || (exp->exp_obd->obd_no_transno && wait_sync))) {
2712 req->rq_no_reply = 1;
2713 /* reply out callback would free */
2714 ptlrpc_req_drop_rs(req);
2715 if (!exp->exp_obd->obd_no_transno)
2716 LCONSOLE_WARN("%s: Bulk IO write error with %s (at %s),"
2717 " client will retry: rc = %d\n",
2719 obd_uuid2str(&exp->exp_client_uuid),
2720 obd_export_nid2str(exp), rc);
2722 memory_pressure_clr();
2725 EXPORT_SYMBOL(tgt_brw_write);
2727 /* Check if request can be reconstructed from saved reply data
2728 * A copy of the reply data is returned in @trd if the pointer is not NULL
2730 int req_can_reconstruct(struct ptlrpc_request *req,
2731 struct tg_reply_data *trd)
2733 struct tg_export_data *ted = &req->rq_export->exp_target_data;
2734 struct lsd_client_data *lcd = ted->ted_lcd;
2737 if (tgt_is_multimodrpcs_client(req->rq_export))
2738 return tgt_lookup_reply(req, trd);
2740 mutex_lock(&ted->ted_lcd_lock);
2741 found = req->rq_xid == lcd->lcd_last_xid ||
2742 req->rq_xid == lcd->lcd_last_close_xid;
2744 if (found && trd != NULL) {
2745 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
2746 trd->trd_reply.lrd_xid = lcd->lcd_last_close_xid;
2747 trd->trd_reply.lrd_transno =
2748 lcd->lcd_last_close_transno;
2749 trd->trd_reply.lrd_result = lcd->lcd_last_close_result;
2751 trd->trd_reply.lrd_xid = lcd->lcd_last_xid;
2752 trd->trd_reply.lrd_transno = lcd->lcd_last_transno;
2753 trd->trd_reply.lrd_result = lcd->lcd_last_result;
2754 trd->trd_reply.lrd_data = lcd->lcd_last_data;
2755 trd->trd_pre_versions[0] = lcd->lcd_pre_versions[0];
2756 trd->trd_pre_versions[1] = lcd->lcd_pre_versions[1];
2757 trd->trd_pre_versions[2] = lcd->lcd_pre_versions[2];
2758 trd->trd_pre_versions[3] = lcd->lcd_pre_versions[3];
2761 mutex_unlock(&ted->ted_lcd_lock);
2765 EXPORT_SYMBOL(req_can_reconstruct);