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, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2014, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_OSC
39 #include <libcfs/libcfs.h>
41 #include <lustre_dlm.h>
42 #include <lustre_net.h>
43 #include <lustre/lustre_user.h>
44 #include <obd_cksum.h>
45 #include <lustre_ha.h>
46 #include <lprocfs_status.h>
47 #include <lustre_ioctl.h>
48 #include <lustre_debug.h>
49 #include <lustre_param.h>
50 #include <lustre_fid.h>
51 #include <obd_class.h>
52 #include "osc_internal.h"
53 #include "osc_cl_internal.h"
55 struct osc_brw_async_args {
59 obd_count aa_page_count;
61 struct brw_page **aa_ppga;
62 struct client_obd *aa_cli;
63 struct list_head aa_oaps;
64 struct list_head aa_exts;
65 struct obd_capa *aa_ocapa;
66 struct cl_req *aa_clerq;
69 #define osc_grant_args osc_brw_async_args
71 struct osc_async_args {
72 struct obd_info *aa_oi;
75 struct osc_setattr_args {
77 obd_enqueue_update_f sa_upcall;
81 struct osc_fsync_args {
82 struct obd_info *fa_oi;
83 obd_enqueue_update_f fa_upcall;
87 struct osc_enqueue_args {
88 struct obd_export *oa_exp;
92 osc_enqueue_upcall_f oa_upcall;
94 struct ost_lvb *oa_lvb;
95 struct lustre_handle oa_lockh;
96 unsigned int oa_agl:1;
99 static void osc_release_ppga(struct brw_page **ppga, obd_count count);
100 static int brw_interpret(const struct lu_env *env, struct ptlrpc_request *req,
103 static inline void osc_pack_capa(struct ptlrpc_request *req,
104 struct ost_body *body, void *capa)
106 struct obd_capa *oc = (struct obd_capa *)capa;
107 struct lustre_capa *c;
112 c = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
115 body->oa.o_valid |= OBD_MD_FLOSSCAPA;
116 DEBUG_CAPA(D_SEC, c, "pack");
119 static inline void osc_pack_req_body(struct ptlrpc_request *req,
120 struct obd_info *oinfo)
122 struct ost_body *body;
124 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
127 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
129 osc_pack_capa(req, body, oinfo->oi_capa);
132 static inline void osc_set_capa_size(struct ptlrpc_request *req,
133 const struct req_msg_field *field,
137 req_capsule_set_size(&req->rq_pill, field, RCL_CLIENT, 0);
139 /* it is already calculated as sizeof struct obd_capa */
143 static int osc_getattr_interpret(const struct lu_env *env,
144 struct ptlrpc_request *req,
145 struct osc_async_args *aa, int rc)
147 struct ost_body *body;
153 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
155 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
156 lustre_get_wire_obdo(&req->rq_import->imp_connect_data,
157 aa->aa_oi->oi_oa, &body->oa);
159 /* This should really be sent by the OST */
160 aa->aa_oi->oi_oa->o_blksize = DT_MAX_BRW_SIZE;
161 aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
163 CDEBUG(D_INFO, "can't unpack ost_body\n");
165 aa->aa_oi->oi_oa->o_valid = 0;
168 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
172 static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
173 struct ptlrpc_request_set *set)
175 struct ptlrpc_request *req;
176 struct osc_async_args *aa;
180 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
184 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
185 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
187 ptlrpc_request_free(req);
191 osc_pack_req_body(req, oinfo);
193 ptlrpc_request_set_replen(req);
194 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret;
196 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
197 aa = ptlrpc_req_async_args(req);
200 ptlrpc_set_add_req(set, req);
204 static int osc_getattr(const struct lu_env *env, struct obd_export *exp,
205 struct obd_info *oinfo)
207 struct ptlrpc_request *req;
208 struct ost_body *body;
212 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
216 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
217 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
219 ptlrpc_request_free(req);
223 osc_pack_req_body(req, oinfo);
225 ptlrpc_request_set_replen(req);
227 rc = ptlrpc_queue_wait(req);
231 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
233 GOTO(out, rc = -EPROTO);
235 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
236 lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa,
239 oinfo->oi_oa->o_blksize = cli_brw_size(exp->exp_obd);
240 oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
244 ptlrpc_req_finished(req);
248 static int osc_setattr(const struct lu_env *env, struct obd_export *exp,
249 struct obd_info *oinfo, struct obd_trans_info *oti)
251 struct ptlrpc_request *req;
252 struct ost_body *body;
256 LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP);
258 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
262 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
263 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
265 ptlrpc_request_free(req);
269 osc_pack_req_body(req, oinfo);
271 ptlrpc_request_set_replen(req);
273 rc = ptlrpc_queue_wait(req);
277 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
279 GOTO(out, rc = -EPROTO);
281 lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oinfo->oi_oa,
286 ptlrpc_req_finished(req);
290 static int osc_setattr_interpret(const struct lu_env *env,
291 struct ptlrpc_request *req,
292 struct osc_setattr_args *sa, int rc)
294 struct ost_body *body;
300 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
302 GOTO(out, rc = -EPROTO);
304 lustre_get_wire_obdo(&req->rq_import->imp_connect_data, sa->sa_oa,
307 rc = sa->sa_upcall(sa->sa_cookie, rc);
311 int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
312 struct obd_trans_info *oti,
313 obd_enqueue_update_f upcall, void *cookie,
314 struct ptlrpc_request_set *rqset)
316 struct ptlrpc_request *req;
317 struct osc_setattr_args *sa;
321 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
325 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
326 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
328 ptlrpc_request_free(req);
332 if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
333 oinfo->oi_oa->o_lcookie = *oti->oti_logcookies;
335 osc_pack_req_body(req, oinfo);
337 ptlrpc_request_set_replen(req);
339 /* do mds to ost setattr asynchronously */
341 /* Do not wait for response. */
342 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
344 req->rq_interpret_reply =
345 (ptlrpc_interpterer_t)osc_setattr_interpret;
347 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
348 sa = ptlrpc_req_async_args(req);
349 sa->sa_oa = oinfo->oi_oa;
350 sa->sa_upcall = upcall;
351 sa->sa_cookie = cookie;
353 if (rqset == PTLRPCD_SET)
354 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
356 ptlrpc_set_add_req(rqset, req);
362 static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
363 struct obd_trans_info *oti,
364 struct ptlrpc_request_set *rqset)
366 return osc_setattr_async_base(exp, oinfo, oti,
367 oinfo->oi_cb_up, oinfo, rqset);
370 static int osc_create(const struct lu_env *env, struct obd_export *exp,
371 struct obdo *oa, struct obd_trans_info *oti)
373 struct ptlrpc_request *req;
374 struct ost_body *body;
379 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
380 LASSERT(fid_seq_is_echo(ostid_seq(&oa->o_oi)));
382 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE);
384 GOTO(out, rc = -ENOMEM);
386 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
388 ptlrpc_request_free(req);
392 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
395 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
397 ptlrpc_request_set_replen(req);
399 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
400 oa->o_flags == OBD_FL_DELORPHAN) {
402 "delorphan from OST integration");
403 /* Don't resend the delorphan req */
404 req->rq_no_resend = req->rq_no_delay = 1;
407 rc = ptlrpc_queue_wait(req);
411 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
413 GOTO(out_req, rc = -EPROTO);
415 CDEBUG(D_INFO, "oa flags %x\n", oa->o_flags);
416 lustre_get_wire_obdo(&req->rq_import->imp_connect_data, oa, &body->oa);
418 oa->o_blksize = cli_brw_size(exp->exp_obd);
419 oa->o_valid |= OBD_MD_FLBLKSZ;
422 if (oa->o_valid & OBD_MD_FLCOOKIE) {
423 if (oti->oti_logcookies == NULL)
424 oti->oti_logcookies = &oti->oti_onecookie;
426 *oti->oti_logcookies = oa->o_lcookie;
430 CDEBUG(D_HA, "transno: "LPD64"\n",
431 lustre_msg_get_transno(req->rq_repmsg));
433 ptlrpc_req_finished(req);
438 int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
439 obd_enqueue_update_f upcall, void *cookie,
440 struct ptlrpc_request_set *rqset)
442 struct ptlrpc_request *req;
443 struct osc_setattr_args *sa;
444 struct ost_body *body;
448 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH);
452 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
453 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH);
455 ptlrpc_request_free(req);
458 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
459 ptlrpc_at_set_req_timeout(req);
461 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
463 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
465 osc_pack_capa(req, body, oinfo->oi_capa);
467 ptlrpc_request_set_replen(req);
469 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret;
470 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
471 sa = ptlrpc_req_async_args(req);
472 sa->sa_oa = oinfo->oi_oa;
473 sa->sa_upcall = upcall;
474 sa->sa_cookie = cookie;
475 if (rqset == PTLRPCD_SET)
476 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
478 ptlrpc_set_add_req(rqset, req);
483 static int osc_sync_interpret(const struct lu_env *env,
484 struct ptlrpc_request *req,
487 struct osc_fsync_args *fa = arg;
488 struct ost_body *body;
494 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
496 CERROR ("can't unpack ost_body\n");
497 GOTO(out, rc = -EPROTO);
500 *fa->fa_oi->oi_oa = body->oa;
502 rc = fa->fa_upcall(fa->fa_cookie, rc);
506 int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
507 obd_enqueue_update_f upcall, void *cookie,
508 struct ptlrpc_request_set *rqset)
510 struct ptlrpc_request *req;
511 struct ost_body *body;
512 struct osc_fsync_args *fa;
516 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC);
520 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
521 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC);
523 ptlrpc_request_free(req);
527 /* overload the size and blocks fields in the oa with start/end */
528 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
530 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa,
532 osc_pack_capa(req, body, oinfo->oi_capa);
534 ptlrpc_request_set_replen(req);
535 req->rq_interpret_reply = osc_sync_interpret;
537 CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args));
538 fa = ptlrpc_req_async_args(req);
540 fa->fa_upcall = upcall;
541 fa->fa_cookie = cookie;
543 if (rqset == PTLRPCD_SET)
544 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
546 ptlrpc_set_add_req(rqset, req);
551 /* Find and cancel locally locks matched by @mode in the resource found by
552 * @objid. Found locks are added into @cancel list. Returns the amount of
553 * locks added to @cancels list. */
554 static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
555 struct list_head *cancels,
556 ldlm_mode_t mode, __u64 lock_flags)
558 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
559 struct ldlm_res_id res_id;
560 struct ldlm_resource *res;
564 /* Return, i.e. cancel nothing, only if ELC is supported (flag in
565 * export) but disabled through procfs (flag in NS).
567 * This distinguishes from a case when ELC is not supported originally,
568 * when we still want to cancel locks in advance and just cancel them
569 * locally, without sending any RPC. */
570 if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
573 ostid_build_res_name(&oa->o_oi, &res_id);
574 res = ldlm_resource_get(ns, NULL, &res_id, 0, 0);
578 LDLM_RESOURCE_ADDREF(res);
579 count = ldlm_cancel_resource_local(res, cancels, NULL, mode,
580 lock_flags, 0, NULL);
581 LDLM_RESOURCE_DELREF(res);
582 ldlm_resource_putref(res);
586 static int osc_destroy_interpret(const struct lu_env *env,
587 struct ptlrpc_request *req, void *data,
590 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
592 atomic_dec(&cli->cl_destroy_in_flight);
593 wake_up(&cli->cl_destroy_waitq);
597 static int osc_can_send_destroy(struct client_obd *cli)
599 if (atomic_inc_return(&cli->cl_destroy_in_flight) <=
600 cli->cl_max_rpcs_in_flight) {
601 /* The destroy request can be sent */
604 if (atomic_dec_return(&cli->cl_destroy_in_flight) <
605 cli->cl_max_rpcs_in_flight) {
607 * The counter has been modified between the two atomic
610 wake_up(&cli->cl_destroy_waitq);
615 /* Destroy requests can be async always on the client, and we don't even really
616 * care about the return code since the client cannot do anything at all about
618 * When the MDS is unlinking a filename, it saves the file objects into a
619 * recovery llog, and these object records are cancelled when the OST reports
620 * they were destroyed and sync'd to disk (i.e. transaction committed).
621 * If the client dies, or the OST is down when the object should be destroyed,
622 * the records are not cancelled, and when the OST reconnects to the MDS next,
623 * it will retrieve the llog unlink logs and then sends the log cancellation
624 * cookies to the MDS after committing destroy transactions. */
625 static int osc_destroy(const struct lu_env *env, struct obd_export *exp,
626 struct obdo *oa, struct obd_trans_info *oti)
628 struct client_obd *cli = &exp->exp_obd->u.cli;
629 struct ptlrpc_request *req;
630 struct ost_body *body;
631 struct list_head cancels = LIST_HEAD_INIT(cancels);
636 CDEBUG(D_INFO, "oa NULL\n");
640 count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW,
641 LDLM_FL_DISCARD_DATA);
643 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY);
645 ldlm_lock_list_put(&cancels, l_bl_ast, count);
649 osc_set_capa_size(req, &RMF_CAPA1, NULL);
650 rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY,
653 ptlrpc_request_free(req);
657 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
658 ptlrpc_at_set_req_timeout(req);
660 if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
661 oa->o_lcookie = *oti->oti_logcookies;
662 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
664 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
666 ptlrpc_request_set_replen(req);
668 /* If osc_destory is for destroying the unlink orphan,
669 * sent from MDT to OST, which should not be blocked here,
670 * because the process might be triggered by ptlrpcd, and
671 * it is not good to block ptlrpcd thread (b=16006)*/
672 if (!(oa->o_flags & OBD_FL_DELORPHAN)) {
673 req->rq_interpret_reply = osc_destroy_interpret;
674 if (!osc_can_send_destroy(cli)) {
675 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP,
679 * Wait until the number of on-going destroy RPCs drops
680 * under max_rpc_in_flight
682 l_wait_event_exclusive(cli->cl_destroy_waitq,
683 osc_can_send_destroy(cli), &lwi);
687 /* Do not wait for response */
688 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
692 static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
695 obd_flag bits = OBD_MD_FLBLOCKS|OBD_MD_FLGRANT;
697 LASSERT(!(oa->o_valid & bits));
700 spin_lock(&cli->cl_loi_list_lock);
701 oa->o_dirty = cli->cl_dirty_pages << PAGE_CACHE_SHIFT;
702 if (unlikely(cli->cl_dirty_pages - cli->cl_dirty_transit >
703 cli->cl_dirty_max_pages)) {
704 CERROR("dirty %lu - %lu > dirty_max %lu\n",
705 cli->cl_dirty_pages, cli->cl_dirty_transit,
706 cli->cl_dirty_max_pages);
708 } else if (unlikely(atomic_long_read(&obd_dirty_pages) -
709 atomic_long_read(&obd_dirty_transit_pages) >
710 (obd_max_dirty_pages + 1))) {
711 /* The atomic_read() allowing the atomic_inc() are
712 * not covered by a lock thus they may safely race and trip
713 * this CERROR() unless we add in a small fudge factor (+1). */
714 CERROR("%s: dirty %ld - %ld > system dirty_max %lu\n",
715 cli->cl_import->imp_obd->obd_name,
716 atomic_long_read(&obd_dirty_pages),
717 atomic_long_read(&obd_dirty_transit_pages),
718 obd_max_dirty_pages);
720 } else if (unlikely(cli->cl_dirty_max_pages - cli->cl_dirty_pages >
722 CERROR("dirty %lu - dirty_max %lu too big???\n",
723 cli->cl_dirty_pages, cli->cl_dirty_max_pages);
726 unsigned long max_in_flight = (cli->cl_max_pages_per_rpc <<
728 (cli->cl_max_rpcs_in_flight + 1);
729 oa->o_undirty = max(cli->cl_dirty_max_pages << PAGE_CACHE_SHIFT,
732 oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
733 oa->o_dropped = cli->cl_lost_grant;
734 cli->cl_lost_grant = 0;
735 spin_unlock(&cli->cl_loi_list_lock);
736 CDEBUG(D_CACHE,"dirty: "LPU64" undirty: %u dropped %u grant: "LPU64"\n",
737 oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
741 void osc_update_next_shrink(struct client_obd *cli)
743 cli->cl_next_shrink_grant =
744 cfs_time_shift(cli->cl_grant_shrink_interval);
745 CDEBUG(D_CACHE, "next time %ld to shrink grant \n",
746 cli->cl_next_shrink_grant);
749 static void __osc_update_grant(struct client_obd *cli, obd_size grant)
751 spin_lock(&cli->cl_loi_list_lock);
752 cli->cl_avail_grant += grant;
753 spin_unlock(&cli->cl_loi_list_lock);
756 static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
758 if (body->oa.o_valid & OBD_MD_FLGRANT) {
759 CDEBUG(D_CACHE, "got "LPU64" extra grant\n", body->oa.o_grant);
760 __osc_update_grant(cli, body->oa.o_grant);
764 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
765 obd_count keylen, void *key, obd_count vallen,
766 void *val, struct ptlrpc_request_set *set);
768 static int osc_shrink_grant_interpret(const struct lu_env *env,
769 struct ptlrpc_request *req,
772 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
773 struct obdo *oa = ((struct osc_grant_args *)aa)->aa_oa;
774 struct ost_body *body;
777 __osc_update_grant(cli, oa->o_grant);
781 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
783 osc_update_grant(cli, body);
789 static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
791 spin_lock(&cli->cl_loi_list_lock);
792 oa->o_grant = cli->cl_avail_grant / 4;
793 cli->cl_avail_grant -= oa->o_grant;
794 spin_unlock(&cli->cl_loi_list_lock);
795 if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
796 oa->o_valid |= OBD_MD_FLFLAGS;
799 oa->o_flags |= OBD_FL_SHRINK_GRANT;
800 osc_update_next_shrink(cli);
803 /* Shrink the current grant, either from some large amount to enough for a
804 * full set of in-flight RPCs, or if we have already shrunk to that limit
805 * then to enough for a single RPC. This avoids keeping more grant than
806 * needed, and avoids shrinking the grant piecemeal. */
807 static int osc_shrink_grant(struct client_obd *cli)
809 __u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) *
810 (cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT);
812 spin_lock(&cli->cl_loi_list_lock);
813 if (cli->cl_avail_grant <= target_bytes)
814 target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
815 spin_unlock(&cli->cl_loi_list_lock);
817 return osc_shrink_grant_to_target(cli, target_bytes);
820 int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
823 struct ost_body *body;
826 spin_lock(&cli->cl_loi_list_lock);
827 /* Don't shrink if we are already above or below the desired limit
828 * We don't want to shrink below a single RPC, as that will negatively
829 * impact block allocation and long-term performance. */
830 if (target_bytes < cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT)
831 target_bytes = cli->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
833 if (target_bytes >= cli->cl_avail_grant) {
834 spin_unlock(&cli->cl_loi_list_lock);
837 spin_unlock(&cli->cl_loi_list_lock);
843 osc_announce_cached(cli, &body->oa, 0);
845 spin_lock(&cli->cl_loi_list_lock);
846 body->oa.o_grant = cli->cl_avail_grant - target_bytes;
847 cli->cl_avail_grant = target_bytes;
848 spin_unlock(&cli->cl_loi_list_lock);
849 if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
850 body->oa.o_valid |= OBD_MD_FLFLAGS;
851 body->oa.o_flags = 0;
853 body->oa.o_flags |= OBD_FL_SHRINK_GRANT;
854 osc_update_next_shrink(cli);
856 rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export,
857 sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK,
858 sizeof(*body), body, NULL);
860 __osc_update_grant(cli, body->oa.o_grant);
865 static int osc_should_shrink_grant(struct client_obd *client)
867 cfs_time_t time = cfs_time_current();
868 cfs_time_t next_shrink = client->cl_next_shrink_grant;
870 if ((client->cl_import->imp_connect_data.ocd_connect_flags &
871 OBD_CONNECT_GRANT_SHRINK) == 0)
874 if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
875 /* Get the current RPC size directly, instead of going via:
876 * cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export)
877 * Keep comment here so that it can be found by searching. */
878 int brw_size = client->cl_max_pages_per_rpc << PAGE_CACHE_SHIFT;
880 if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
881 client->cl_avail_grant > brw_size)
884 osc_update_next_shrink(client);
889 static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data)
891 struct client_obd *client;
893 list_for_each_entry(client, &item->ti_obd_list, cl_grant_shrink_list) {
894 if (osc_should_shrink_grant(client))
895 osc_shrink_grant(client);
900 static int osc_add_shrink_grant(struct client_obd *client)
904 rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval,
906 osc_grant_shrink_grant_cb, NULL,
907 &client->cl_grant_shrink_list);
909 CERROR("add grant client %s error %d\n",
910 client->cl_import->imp_obd->obd_name, rc);
913 CDEBUG(D_CACHE, "add grant client %s \n",
914 client->cl_import->imp_obd->obd_name);
915 osc_update_next_shrink(client);
919 static int osc_del_shrink_grant(struct client_obd *client)
921 return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list,
925 static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
928 * ocd_grant is the total grant amount we're expect to hold: if we've
929 * been evicted, it's the new avail_grant amount, cl_dirty_pages will
930 * drop to 0 as inflight RPCs fail out; otherwise, it's avail_grant +
933 * race is tolerable here: if we're evicted, but imp_state already
934 * left EVICTED state, then cl_dirty_pages must be 0 already.
936 spin_lock(&cli->cl_loi_list_lock);
937 if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
938 cli->cl_avail_grant = ocd->ocd_grant;
940 cli->cl_avail_grant = ocd->ocd_grant -
941 (cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
943 if (cli->cl_avail_grant < 0) {
944 CWARN("%s: available grant < 0: avail/ocd/dirty %ld/%u/%ld\n",
945 cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant,
946 ocd->ocd_grant, cli->cl_dirty_pages << PAGE_CACHE_SHIFT);
947 /* workaround for servers which do not have the patch from
949 cli->cl_avail_grant = ocd->ocd_grant;
952 /* determine the appropriate chunk size used by osc_extent. */
953 cli->cl_chunkbits = max_t(int, PAGE_CACHE_SHIFT, ocd->ocd_blocksize);
954 spin_unlock(&cli->cl_loi_list_lock);
956 CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld."
957 "chunk bits: %d.\n", cli->cl_import->imp_obd->obd_name,
958 cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits);
960 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
961 list_empty(&cli->cl_grant_shrink_list))
962 osc_add_shrink_grant(cli);
965 /* We assume that the reason this OSC got a short read is because it read
966 * beyond the end of a stripe file; i.e. lustre is reading a sparse file
967 * via the LOV, and it _knows_ it's reading inside the file, it's just that
968 * this stripe never got written at or beyond this stripe offset yet. */
969 static void handle_short_read(int nob_read, obd_count page_count,
970 struct brw_page **pga)
975 /* skip bytes read OK */
976 while (nob_read > 0) {
977 LASSERT (page_count > 0);
979 if (pga[i]->count > nob_read) {
980 /* EOF inside this page */
981 ptr = kmap(pga[i]->pg) +
982 (pga[i]->off & ~CFS_PAGE_MASK);
983 memset(ptr + nob_read, 0, pga[i]->count - nob_read);
990 nob_read -= pga[i]->count;
995 /* zero remaining pages */
996 while (page_count-- > 0) {
997 ptr = kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
998 memset(ptr, 0, pga[i]->count);
1004 static int check_write_rcs(struct ptlrpc_request *req,
1005 int requested_nob, int niocount,
1006 obd_count page_count, struct brw_page **pga)
1011 remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS,
1012 sizeof(*remote_rcs) *
1014 if (remote_rcs == NULL) {
1015 CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n");
1019 /* return error if any niobuf was in error */
1020 for (i = 0; i < niocount; i++) {
1021 if ((int)remote_rcs[i] < 0)
1022 return(remote_rcs[i]);
1024 if (remote_rcs[i] != 0) {
1025 CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n",
1026 i, remote_rcs[i], req);
1031 if (req->rq_bulk->bd_nob_transferred != requested_nob) {
1032 CERROR("Unexpected # bytes transferred: %d (requested %d)\n",
1033 req->rq_bulk->bd_nob_transferred, requested_nob);
1040 static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2)
1042 if (p1->flag != p2->flag) {
1043 unsigned mask = ~(OBD_BRW_FROM_GRANT | OBD_BRW_NOCACHE |
1044 OBD_BRW_SYNC | OBD_BRW_ASYNC |
1045 OBD_BRW_NOQUOTA | OBD_BRW_SOFT_SYNC);
1047 /* warn if we try to combine flags that we don't know to be
1048 * safe to combine */
1049 if (unlikely((p1->flag & mask) != (p2->flag & mask))) {
1050 CWARN("Saw flags 0x%x and 0x%x in the same brw, please "
1051 "report this at https://jira.hpdd.intel.com/\n",
1052 p1->flag, p2->flag);
1057 return (p1->off + p1->count == p2->off);
1060 static obd_count osc_checksum_bulk(int nob, obd_count pg_count,
1061 struct brw_page **pga, int opc,
1062 cksum_type_t cksum_type)
1066 struct cfs_crypto_hash_desc *hdesc;
1067 unsigned int bufsize;
1069 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1071 LASSERT(pg_count > 0);
1073 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1074 if (IS_ERR(hdesc)) {
1075 CERROR("Unable to initialize checksum hash %s\n",
1076 cfs_crypto_hash_name(cfs_alg));
1077 return PTR_ERR(hdesc);
1080 while (nob > 0 && pg_count > 0) {
1081 unsigned int count = pga[i]->count > nob ? nob : pga[i]->count;
1083 /* corrupt the data before we compute the checksum, to
1084 * simulate an OST->client data error */
1085 if (i == 0 && opc == OST_READ &&
1086 OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
1087 unsigned char *ptr = kmap(pga[i]->pg);
1088 int off = pga[i]->off & ~CFS_PAGE_MASK;
1090 memcpy(ptr + off, "bad1", min_t(typeof(nob), 4, nob));
1093 cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
1094 pga[i]->off & ~CFS_PAGE_MASK,
1096 LL_CDEBUG_PAGE(D_PAGE, pga[i]->pg, "off %d\n",
1097 (int)(pga[i]->off & ~CFS_PAGE_MASK));
1099 nob -= pga[i]->count;
1104 bufsize = sizeof(cksum);
1105 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1107 /* For sending we only compute the wrong checksum instead
1108 * of corrupting the data so it is still correct on a redo */
1109 if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND))
1115 static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
1116 struct lov_stripe_md *lsm, obd_count page_count,
1117 struct brw_page **pga,
1118 struct ptlrpc_request **reqp,
1119 struct obd_capa *ocapa, int reserve,
1122 struct ptlrpc_request *req;
1123 struct ptlrpc_bulk_desc *desc;
1124 struct ost_body *body;
1125 struct obd_ioobj *ioobj;
1126 struct niobuf_remote *niobuf;
1127 int niocount, i, requested_nob, opc, rc;
1128 struct osc_brw_async_args *aa;
1129 struct req_capsule *pill;
1130 struct brw_page *pg_prev;
1133 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ))
1134 RETURN(-ENOMEM); /* Recoverable */
1135 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2))
1136 RETURN(-EINVAL); /* Fatal */
1138 if ((cmd & OBD_BRW_WRITE) != 0) {
1140 req = ptlrpc_request_alloc_pool(cli->cl_import,
1141 cli->cl_import->imp_rq_pool,
1142 &RQF_OST_BRW_WRITE);
1145 req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ);
1150 for (niocount = i = 1; i < page_count; i++) {
1151 if (!can_merge_pages(pga[i - 1], pga[i]))
1155 pill = &req->rq_pill;
1156 req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT,
1158 req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT,
1159 niocount * sizeof(*niobuf));
1160 osc_set_capa_size(req, &RMF_CAPA1, ocapa);
1162 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc);
1164 ptlrpc_request_free(req);
1167 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
1168 ptlrpc_at_set_req_timeout(req);
1169 /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own
1171 req->rq_no_retry_einprogress = 1;
1173 desc = ptlrpc_prep_bulk_imp(req, page_count,
1174 cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS,
1175 opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK,
1179 GOTO(out, rc = -ENOMEM);
1180 /* NB request now owns desc and will free it when it gets freed */
1182 body = req_capsule_client_get(pill, &RMF_OST_BODY);
1183 ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
1184 niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
1185 LASSERT(body != NULL && ioobj != NULL && niobuf != NULL);
1187 lustre_set_wire_obdo(&req->rq_import->imp_connect_data, &body->oa, oa);
1189 obdo_to_ioobj(oa, ioobj);
1190 ioobj->ioo_bufcnt = niocount;
1191 /* The high bits of ioo_max_brw tells server _maximum_ number of bulks
1192 * that might be send for this request. The actual number is decided
1193 * when the RPC is finally sent in ptlrpc_register_bulk(). It sends
1194 * "max - 1" for old client compatibility sending "0", and also so the
1195 * the actual maximum is a power-of-two number, not one less. LU-1431 */
1196 ioobj_max_brw_set(ioobj, desc->bd_md_max_brw);
1197 osc_pack_capa(req, body, ocapa);
1198 LASSERT(page_count > 0);
1200 for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
1201 struct brw_page *pg = pga[i];
1202 int poff = pg->off & ~CFS_PAGE_MASK;
1204 LASSERT(pg->count > 0);
1205 /* make sure there is no gap in the middle of page array */
1206 LASSERTF(page_count == 1 ||
1207 (ergo(i == 0, poff + pg->count == PAGE_CACHE_SIZE) &&
1208 ergo(i > 0 && i < page_count - 1,
1209 poff == 0 && pg->count == PAGE_CACHE_SIZE) &&
1210 ergo(i == page_count - 1, poff == 0)),
1211 "i: %d/%d pg: %p off: "LPU64", count: %u\n",
1212 i, page_count, pg, pg->off, pg->count);
1213 LASSERTF(i == 0 || pg->off > pg_prev->off,
1214 "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64
1215 " prev_pg %p [pri %lu ind %lu] off "LPU64"\n",
1217 pg->pg, page_private(pg->pg), pg->pg->index, pg->off,
1218 pg_prev->pg, page_private(pg_prev->pg),
1219 pg_prev->pg->index, pg_prev->off);
1220 LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) ==
1221 (pg->flag & OBD_BRW_SRVLOCK));
1223 ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count);
1224 requested_nob += pg->count;
1226 if (i > 0 && can_merge_pages(pg_prev, pg)) {
1228 niobuf->rnb_len += pg->count;
1230 niobuf->rnb_offset = pg->off;
1231 niobuf->rnb_len = pg->count;
1232 niobuf->rnb_flags = pg->flag;
1237 LASSERTF((void *)(niobuf - niocount) ==
1238 req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE),
1239 "want %p - real %p\n", req_capsule_client_get(&req->rq_pill,
1240 &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount));
1242 osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0);
1244 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1245 body->oa.o_valid |= OBD_MD_FLFLAGS;
1246 body->oa.o_flags = 0;
1248 body->oa.o_flags |= OBD_FL_RECOV_RESEND;
1251 if (osc_should_shrink_grant(cli))
1252 osc_shrink_grant_local(cli, &body->oa);
1254 /* size[REQ_REC_OFF] still sizeof (*body) */
1255 if (opc == OST_WRITE) {
1256 if (cli->cl_checksum &&
1257 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1258 /* store cl_cksum_type in a local variable since
1259 * it can be changed via lprocfs */
1260 cksum_type_t cksum_type = cli->cl_cksum_type;
1262 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1263 oa->o_flags &= OBD_FL_LOCAL_MASK;
1264 body->oa.o_flags = 0;
1266 body->oa.o_flags |= cksum_type_pack(cksum_type);
1267 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1268 body->oa.o_cksum = osc_checksum_bulk(requested_nob,
1272 CDEBUG(D_PAGE, "checksum at write origin: %x\n",
1274 /* save this in 'oa', too, for later checking */
1275 oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1276 oa->o_flags |= cksum_type_pack(cksum_type);
1278 /* clear out the checksum flag, in case this is a
1279 * resend but cl_checksum is no longer set. b=11238 */
1280 oa->o_valid &= ~OBD_MD_FLCKSUM;
1282 oa->o_cksum = body->oa.o_cksum;
1283 /* 1 RC per niobuf */
1284 req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
1285 sizeof(__u32) * niocount);
1287 if (cli->cl_checksum &&
1288 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1289 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
1290 body->oa.o_flags = 0;
1291 body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type);
1292 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1295 ptlrpc_request_set_replen(req);
1297 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1298 aa = ptlrpc_req_async_args(req);
1300 aa->aa_requested_nob = requested_nob;
1301 aa->aa_nio_count = niocount;
1302 aa->aa_page_count = page_count;
1306 INIT_LIST_HEAD(&aa->aa_oaps);
1307 if (ocapa && reserve)
1308 aa->aa_ocapa = capa_get(ocapa);
1311 niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
1312 CDEBUG(D_RPCTRACE, "brw rpc %p - object "DOSTID" offset %lld<>%lld\n",
1313 req, POSTID(&oa->o_oi), niobuf[0].rnb_offset,
1314 niobuf[niocount - 1].rnb_offset + niobuf[niocount - 1].rnb_len);
1318 ptlrpc_req_finished(req);
1322 static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
1323 __u32 client_cksum, __u32 server_cksum, int nob,
1324 obd_count page_count, struct brw_page **pga,
1325 cksum_type_t client_cksum_type)
1329 cksum_type_t cksum_type;
1331 if (server_cksum == client_cksum) {
1332 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1336 cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1338 new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE,
1341 if (cksum_type != client_cksum_type)
1342 msg = "the server did not use the checksum type specified in "
1343 "the original request - likely a protocol problem";
1344 else if (new_cksum == server_cksum)
1345 msg = "changed on the client after we checksummed it - "
1346 "likely false positive due to mmap IO (bug 11742)";
1347 else if (new_cksum == client_cksum)
1348 msg = "changed in transit before arrival at OST";
1350 msg = "changed in transit AND doesn't match the original - "
1351 "likely false positive due to mmap IO (bug 11742)";
1353 LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
1354 " object "DOSTID" extent ["LPU64"-"LPU64"]\n",
1355 msg, libcfs_nid2str(peer->nid),
1356 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1357 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1358 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1359 POSTID(&oa->o_oi), pga[0]->off,
1360 pga[page_count-1]->off + pga[page_count-1]->count - 1);
1361 CERROR("original client csum %x (type %x), server csum %x (type %x), "
1362 "client csum now %x\n", client_cksum, client_cksum_type,
1363 server_cksum, cksum_type, new_cksum);
1367 /* Note rc enters this function as number of bytes transferred */
1368 static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
1370 struct osc_brw_async_args *aa = (void *)&req->rq_async_args;
1371 const lnet_process_id_t *peer =
1372 &req->rq_import->imp_connection->c_peer;
1373 struct client_obd *cli = aa->aa_cli;
1374 struct ost_body *body;
1375 u32 client_cksum = 0;
1378 if (rc < 0 && rc != -EDQUOT) {
1379 DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc);
1383 LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc);
1384 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1386 DEBUG_REQ(D_INFO, req, "Can't unpack body\n");
1390 /* set/clear over quota flag for a uid/gid */
1391 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE &&
1392 body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) {
1393 unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid };
1395 CDEBUG(D_QUOTA, "setdq for [%u %u] with valid "LPX64", flags %x\n",
1396 body->oa.o_uid, body->oa.o_gid, body->oa.o_valid,
1398 osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags);
1401 osc_update_grant(cli, body);
1406 if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM)
1407 client_cksum = aa->aa_oa->o_cksum; /* save for later */
1409 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
1411 CERROR("Unexpected +ve rc %d\n", rc);
1414 LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob);
1416 if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk))
1419 if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum &&
1420 check_write_checksum(&body->oa, peer, client_cksum,
1421 body->oa.o_cksum, aa->aa_requested_nob,
1422 aa->aa_page_count, aa->aa_ppga,
1423 cksum_type_unpack(aa->aa_oa->o_flags)))
1426 rc = check_write_rcs(req, aa->aa_requested_nob,aa->aa_nio_count,
1427 aa->aa_page_count, aa->aa_ppga);
1431 /* The rest of this function executes only for OST_READs */
1433 /* if unwrap_bulk failed, return -EAGAIN to retry */
1434 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
1436 GOTO(out, rc = -EAGAIN);
1438 if (rc > aa->aa_requested_nob) {
1439 CERROR("Unexpected rc %d (%d requested)\n", rc,
1440 aa->aa_requested_nob);
1444 if (rc != req->rq_bulk->bd_nob_transferred) {
1445 CERROR ("Unexpected rc %d (%d transferred)\n",
1446 rc, req->rq_bulk->bd_nob_transferred);
1450 if (rc < aa->aa_requested_nob)
1451 handle_short_read(rc, aa->aa_page_count, aa->aa_ppga);
1453 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1454 static int cksum_counter;
1455 u32 server_cksum = body->oa.o_cksum;
1458 cksum_type_t cksum_type;
1460 cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS?
1461 body->oa.o_flags : 0);
1462 client_cksum = osc_checksum_bulk(rc, aa->aa_page_count,
1463 aa->aa_ppga, OST_READ,
1466 if (peer->nid == req->rq_bulk->bd_sender) {
1470 router = libcfs_nid2str(req->rq_bulk->bd_sender);
1473 if (server_cksum != client_cksum) {
1474 LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
1475 "%s%s%s inode "DFID" object "DOSTID
1476 " extent ["LPU64"-"LPU64"]\n",
1477 req->rq_import->imp_obd->obd_name,
1478 libcfs_nid2str(peer->nid),
1480 body->oa.o_valid & OBD_MD_FLFID ?
1481 body->oa.o_parent_seq : (__u64)0,
1482 body->oa.o_valid & OBD_MD_FLFID ?
1483 body->oa.o_parent_oid : 0,
1484 body->oa.o_valid & OBD_MD_FLFID ?
1485 body->oa.o_parent_ver : 0,
1486 POSTID(&body->oa.o_oi),
1487 aa->aa_ppga[0]->off,
1488 aa->aa_ppga[aa->aa_page_count-1]->off +
1489 aa->aa_ppga[aa->aa_page_count-1]->count -
1491 CERROR("client %x, server %x, cksum_type %x\n",
1492 client_cksum, server_cksum, cksum_type);
1494 aa->aa_oa->o_cksum = client_cksum;
1498 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1501 } else if (unlikely(client_cksum)) {
1502 static int cksum_missed;
1505 if ((cksum_missed & (-cksum_missed)) == cksum_missed)
1506 CERROR("Checksum %u requested from %s but not sent\n",
1507 cksum_missed, libcfs_nid2str(peer->nid));
1513 lustre_get_wire_obdo(&req->rq_import->imp_connect_data,
1514 aa->aa_oa, &body->oa);
1519 static int osc_brw_redo_request(struct ptlrpc_request *request,
1520 struct osc_brw_async_args *aa, int rc)
1522 struct ptlrpc_request *new_req;
1523 struct osc_brw_async_args *new_aa;
1524 struct osc_async_page *oap;
1527 DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request,
1528 "redo for recoverable error %d", rc);
1530 rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) ==
1531 OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ,
1532 aa->aa_cli, aa->aa_oa,
1533 NULL /* lsm unused by osc currently */,
1534 aa->aa_page_count, aa->aa_ppga,
1535 &new_req, aa->aa_ocapa, 0, 1);
1539 list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1540 if (oap->oap_request != NULL) {
1541 LASSERTF(request == oap->oap_request,
1542 "request %p != oap_request %p\n",
1543 request, oap->oap_request);
1544 if (oap->oap_interrupted) {
1545 ptlrpc_req_finished(new_req);
1550 /* New request takes over pga and oaps from old request.
1551 * Note that copying a list_head doesn't work, need to move it... */
1553 new_req->rq_interpret_reply = request->rq_interpret_reply;
1554 new_req->rq_async_args = request->rq_async_args;
1555 new_req->rq_commit_cb = request->rq_commit_cb;
1556 /* cap resend delay to the current request timeout, this is similar to
1557 * what ptlrpc does (see after_reply()) */
1558 if (aa->aa_resends > new_req->rq_timeout)
1559 new_req->rq_sent = cfs_time_current_sec() + new_req->rq_timeout;
1561 new_req->rq_sent = cfs_time_current_sec() + aa->aa_resends;
1562 new_req->rq_generation_set = 1;
1563 new_req->rq_import_generation = request->rq_import_generation;
1565 new_aa = ptlrpc_req_async_args(new_req);
1567 INIT_LIST_HEAD(&new_aa->aa_oaps);
1568 list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
1569 INIT_LIST_HEAD(&new_aa->aa_exts);
1570 list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
1571 new_aa->aa_resends = aa->aa_resends;
1573 list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
1574 if (oap->oap_request) {
1575 ptlrpc_req_finished(oap->oap_request);
1576 oap->oap_request = ptlrpc_request_addref(new_req);
1580 new_aa->aa_ocapa = aa->aa_ocapa;
1581 aa->aa_ocapa = NULL;
1583 /* XXX: This code will run into problem if we're going to support
1584 * to add a series of BRW RPCs into a self-defined ptlrpc_request_set
1585 * and wait for all of them to be finished. We should inherit request
1586 * set from old request. */
1587 ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1);
1589 DEBUG_REQ(D_INFO, new_req, "new request");
1594 * ugh, we want disk allocation on the target to happen in offset order. we'll
1595 * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do
1596 * fine for our small page arrays and doesn't require allocation. its an
1597 * insertion sort that swaps elements that are strides apart, shrinking the
1598 * stride down until its '1' and the array is sorted.
1600 static void sort_brw_pages(struct brw_page **array, int num)
1603 struct brw_page *tmp;
1607 for (stride = 1; stride < num ; stride = (stride * 3) + 1)
1612 for (i = stride ; i < num ; i++) {
1615 while (j >= stride && array[j - stride]->off > tmp->off) {
1616 array[j] = array[j - stride];
1621 } while (stride > 1);
1624 static void osc_release_ppga(struct brw_page **ppga, obd_count count)
1626 LASSERT(ppga != NULL);
1627 OBD_FREE(ppga, sizeof(*ppga) * count);
1630 static int brw_interpret(const struct lu_env *env,
1631 struct ptlrpc_request *req, void *data, int rc)
1633 struct osc_brw_async_args *aa = data;
1634 struct osc_extent *ext;
1635 struct osc_extent *tmp;
1636 struct client_obd *cli = aa->aa_cli;
1639 rc = osc_brw_fini_request(req, rc);
1640 CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
1641 /* When server return -EINPROGRESS, client should always retry
1642 * regardless of the number of times the bulk was resent already. */
1643 if (osc_recoverable_error(rc)) {
1644 if (req->rq_import_generation !=
1645 req->rq_import->imp_generation) {
1646 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1647 ""DOSTID", rc = %d.\n",
1648 req->rq_import->imp_obd->obd_name,
1649 POSTID(&aa->aa_oa->o_oi), rc);
1650 } else if (rc == -EINPROGRESS ||
1651 client_should_resend(aa->aa_resends, aa->aa_cli)) {
1652 rc = osc_brw_redo_request(req, aa, rc);
1654 CERROR("%s: too many resent retries for object: "
1655 ""LPU64":"LPU64", rc = %d.\n",
1656 req->rq_import->imp_obd->obd_name,
1657 POSTID(&aa->aa_oa->o_oi), rc);
1662 else if (rc == -EAGAIN || rc == -EINPROGRESS)
1667 capa_put(aa->aa_ocapa);
1668 aa->aa_ocapa = NULL;
1672 struct obdo *oa = aa->aa_oa;
1673 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
1674 unsigned long valid = 0;
1675 struct cl_object *obj;
1676 struct osc_async_page *last;
1678 last = brw_page2oap(aa->aa_ppga[aa->aa_page_count - 1]);
1679 obj = osc2cl(last->oap_obj);
1681 cl_object_attr_lock(obj);
1682 if (oa->o_valid & OBD_MD_FLBLOCKS) {
1683 attr->cat_blocks = oa->o_blocks;
1684 valid |= CAT_BLOCKS;
1686 if (oa->o_valid & OBD_MD_FLMTIME) {
1687 attr->cat_mtime = oa->o_mtime;
1690 if (oa->o_valid & OBD_MD_FLATIME) {
1691 attr->cat_atime = oa->o_atime;
1694 if (oa->o_valid & OBD_MD_FLCTIME) {
1695 attr->cat_ctime = oa->o_ctime;
1699 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
1700 struct lov_oinfo *loi = cl2osc(obj)->oo_oinfo;
1701 loff_t last_off = last->oap_count + last->oap_obj_off +
1704 /* Change file size if this is an out of quota or
1705 * direct IO write and it extends the file size */
1706 if (loi->loi_lvb.lvb_size < last_off) {
1707 attr->cat_size = last_off;
1710 /* Extend KMS if it's not a lockless write */
1711 if (loi->loi_kms < last_off &&
1712 oap2osc_page(last)->ops_srvlock == 0) {
1713 attr->cat_kms = last_off;
1719 cl_object_attr_update(env, obj, attr, valid);
1720 cl_object_attr_unlock(obj);
1722 OBDO_FREE(aa->aa_oa);
1724 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE && rc == 0)
1725 osc_inc_unstable_pages(req);
1727 list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
1728 list_del_init(&ext->oe_link);
1729 osc_extent_finish(env, ext, 1, rc);
1731 LASSERT(list_empty(&aa->aa_exts));
1732 LASSERT(list_empty(&aa->aa_oaps));
1734 cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
1735 req->rq_bulk->bd_nob_transferred);
1736 osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
1737 ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
1739 spin_lock(&cli->cl_loi_list_lock);
1740 /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
1741 * is called so we know whether to go to sync BRWs or wait for more
1742 * RPCs to complete */
1743 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE)
1744 cli->cl_w_in_flight--;
1746 cli->cl_r_in_flight--;
1747 osc_wake_cache_waiters(cli);
1748 spin_unlock(&cli->cl_loi_list_lock);
1750 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
1754 static void brw_commit(struct ptlrpc_request *req)
1756 /* If osc_inc_unstable_pages (via osc_extent_finish) races with
1757 * this called via the rq_commit_cb, I need to ensure
1758 * osc_dec_unstable_pages is still called. Otherwise unstable
1759 * pages may be leaked. */
1760 spin_lock(&req->rq_lock);
1761 if (likely(req->rq_unstable)) {
1762 req->rq_unstable = 0;
1763 spin_unlock(&req->rq_lock);
1765 osc_dec_unstable_pages(req);
1767 req->rq_committed = 1;
1768 spin_unlock(&req->rq_lock);
1773 * Build an RPC by the list of extent @ext_list. The caller must ensure
1774 * that the total pages in this list are NOT over max pages per RPC.
1775 * Extents in the list must be in OES_RPC state.
1777 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
1778 struct list_head *ext_list, int cmd, pdl_policy_t pol)
1780 struct ptlrpc_request *req = NULL;
1781 struct osc_extent *ext;
1782 struct brw_page **pga = NULL;
1783 struct osc_brw_async_args *aa = NULL;
1784 struct obdo *oa = NULL;
1785 struct osc_async_page *oap;
1786 struct osc_async_page *tmp;
1787 struct cl_req *clerq = NULL;
1788 enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE :
1790 struct cl_req_attr *crattr = NULL;
1791 obd_off starting_offset = OBD_OBJECT_EOF;
1792 obd_off ending_offset = 0;
1796 bool soft_sync = false;
1799 struct list_head rpc_list = LIST_HEAD_INIT(rpc_list);
1800 struct ost_body *body;
1802 LASSERT(!list_empty(ext_list));
1804 /* add pages into rpc_list to build BRW rpc */
1805 list_for_each_entry(ext, ext_list, oe_link) {
1806 LASSERT(ext->oe_state == OES_RPC);
1807 mem_tight |= ext->oe_memalloc;
1808 list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
1810 list_add_tail(&oap->oap_rpc_item, &rpc_list);
1811 if (starting_offset > oap->oap_obj_off)
1812 starting_offset = oap->oap_obj_off;
1814 LASSERT(oap->oap_page_off == 0);
1815 if (ending_offset < oap->oap_obj_off + oap->oap_count)
1816 ending_offset = oap->oap_obj_off +
1819 LASSERT(oap->oap_page_off + oap->oap_count ==
1824 soft_sync = osc_over_unstable_soft_limit(cli);
1826 mpflag = cfs_memory_pressure_get_and_set();
1828 OBD_ALLOC(crattr, sizeof(*crattr));
1830 GOTO(out, rc = -ENOMEM);
1832 OBD_ALLOC(pga, sizeof(*pga) * page_count);
1834 GOTO(out, rc = -ENOMEM);
1838 GOTO(out, rc = -ENOMEM);
1841 list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
1842 struct cl_page *page = oap2cl_page(oap);
1843 if (clerq == NULL) {
1844 clerq = cl_req_alloc(env, page, crt,
1845 1 /* only 1-object rpcs for now */);
1847 GOTO(out, rc = PTR_ERR(clerq));
1850 oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
1852 oap->oap_brw_flags |= OBD_BRW_SOFT_SYNC;
1853 pga[i] = &oap->oap_brw_page;
1854 pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
1855 CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
1856 pga[i]->pg, page_index(oap->oap_page), oap,
1859 cl_req_page_add(env, clerq, page);
1862 /* always get the data for the obdo for the rpc */
1863 LASSERT(clerq != NULL);
1864 crattr->cra_oa = oa;
1865 cl_req_attr_set(env, clerq, crattr, ~0ULL);
1867 rc = cl_req_prep(env, clerq);
1869 CERROR("cl_req_prep failed: %d\n", rc);
1873 sort_brw_pages(pga, page_count);
1874 rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
1875 pga, &req, crattr->cra_capa, 1, 0);
1877 CERROR("prep_req failed: %d\n", rc);
1881 req->rq_commit_cb = brw_commit;
1882 req->rq_interpret_reply = brw_interpret;
1885 req->rq_memalloc = 1;
1887 /* Need to update the timestamps after the request is built in case
1888 * we race with setattr (locally or in queue at OST). If OST gets
1889 * later setattr before earlier BRW (as determined by the request xid),
1890 * the OST will not use BRW timestamps. Sadly, there is no obvious
1891 * way to do this in a single call. bug 10150 */
1892 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
1893 crattr->cra_oa = &body->oa;
1894 cl_req_attr_set(env, clerq, crattr,
1895 OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
1897 lustre_msg_set_jobid(req->rq_reqmsg, crattr->cra_jobid);
1899 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1900 aa = ptlrpc_req_async_args(req);
1901 INIT_LIST_HEAD(&aa->aa_oaps);
1902 list_splice_init(&rpc_list, &aa->aa_oaps);
1903 INIT_LIST_HEAD(&aa->aa_exts);
1904 list_splice_init(ext_list, &aa->aa_exts);
1905 aa->aa_clerq = clerq;
1907 /* queued sync pages can be torn down while the pages
1908 * were between the pending list and the rpc */
1910 list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1911 /* only one oap gets a request reference */
1914 if (oap->oap_interrupted && !req->rq_intr) {
1915 CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
1917 ptlrpc_mark_interrupted(req);
1921 tmp->oap_request = ptlrpc_request_addref(req);
1923 spin_lock(&cli->cl_loi_list_lock);
1924 starting_offset >>= PAGE_CACHE_SHIFT;
1925 if (cmd == OBD_BRW_READ) {
1926 cli->cl_r_in_flight++;
1927 lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
1928 lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
1929 lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
1930 starting_offset + 1);
1932 cli->cl_w_in_flight++;
1933 lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
1934 lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
1935 lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
1936 starting_offset + 1);
1938 spin_unlock(&cli->cl_loi_list_lock);
1940 DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %ur/%uw in flight",
1941 page_count, aa, cli->cl_r_in_flight,
1942 cli->cl_w_in_flight);
1944 /* XXX: Maybe the caller can check the RPC bulk descriptor to
1945 * see which CPU/NUMA node the majority of pages were allocated
1946 * on, and try to assign the async RPC to the CPU core
1947 * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic.
1949 * But on the other hand, we expect that multiple ptlrpcd
1950 * threads and the initial write sponsor can run in parallel,
1951 * especially when data checksum is enabled, which is CPU-bound
1952 * operation and single ptlrpcd thread cannot process in time.
1953 * So more ptlrpcd threads sharing BRW load
1954 * (with PDL_POLICY_ROUND) seems better.
1956 ptlrpcd_add_req(req, pol, -1);
1962 cfs_memory_pressure_restore(mpflag);
1964 if (crattr != NULL) {
1965 capa_put(crattr->cra_capa);
1966 OBD_FREE(crattr, sizeof(*crattr));
1970 LASSERT(req == NULL);
1975 OBD_FREE(pga, sizeof(*pga) * page_count);
1976 /* this should happen rarely and is pretty bad, it makes the
1977 * pending list not follow the dirty order */
1978 while (!list_empty(ext_list)) {
1979 ext = list_entry(ext_list->next, struct osc_extent,
1981 list_del_init(&ext->oe_link);
1982 osc_extent_finish(env, ext, 0, rc);
1984 if (clerq && !IS_ERR(clerq))
1985 cl_req_completion(env, clerq, rc);
1990 static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
1991 struct ldlm_enqueue_info *einfo)
1993 void *data = einfo->ei_cbdata;
1996 LASSERT(lock != NULL);
1997 LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
1998 LASSERT(lock->l_resource->lr_type == einfo->ei_type);
1999 LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
2000 LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
2002 lock_res_and_lock(lock);
2004 if (lock->l_ast_data == NULL)
2005 lock->l_ast_data = data;
2006 if (lock->l_ast_data == data)
2009 unlock_res_and_lock(lock);
2014 static int osc_set_data_with_check(struct lustre_handle *lockh,
2015 struct ldlm_enqueue_info *einfo)
2017 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
2021 set = osc_set_lock_data_with_check(lock, einfo);
2022 LDLM_LOCK_PUT(lock);
2024 CERROR("lockh %p, data %p - client evicted?\n",
2025 lockh, einfo->ei_cbdata);
2029 static int osc_enqueue_fini(struct ptlrpc_request *req,
2030 osc_enqueue_upcall_f upcall, void *cookie,
2031 struct lustre_handle *lockh, ldlm_mode_t mode,
2032 __u64 *flags, int agl, int errcode)
2034 bool intent = *flags & LDLM_FL_HAS_INTENT;
2038 /* The request was created before ldlm_cli_enqueue call. */
2039 if (intent && errcode == ELDLM_LOCK_ABORTED) {
2040 struct ldlm_reply *rep;
2042 rep = req_capsule_server_get(&req->rq_pill, &RMF_DLM_REP);
2043 LASSERT(rep != NULL);
2045 rep->lock_policy_res1 =
2046 ptlrpc_status_ntoh(rep->lock_policy_res1);
2047 if (rep->lock_policy_res1)
2048 errcode = rep->lock_policy_res1;
2050 *flags |= LDLM_FL_LVB_READY;
2051 } else if (errcode == ELDLM_OK) {
2052 *flags |= LDLM_FL_LVB_READY;
2055 /* Call the update callback. */
2056 rc = (*upcall)(cookie, lockh, errcode);
2058 /* release the reference taken in ldlm_cli_enqueue() */
2059 if (errcode == ELDLM_LOCK_MATCHED)
2061 if (errcode == ELDLM_OK && lustre_handle_is_used(lockh))
2062 ldlm_lock_decref(lockh, mode);
2067 static int osc_enqueue_interpret(const struct lu_env *env,
2068 struct ptlrpc_request *req,
2069 struct osc_enqueue_args *aa, int rc)
2071 struct ldlm_lock *lock;
2072 struct lustre_handle *lockh = &aa->oa_lockh;
2073 ldlm_mode_t mode = aa->oa_mode;
2074 struct ost_lvb *lvb = aa->oa_lvb;
2075 __u32 lvb_len = sizeof(*lvb);
2080 /* ldlm_cli_enqueue is holding a reference on the lock, so it must
2082 lock = ldlm_handle2lock(lockh);
2083 LASSERTF(lock != NULL,
2084 "lockh "LPX64", req %p, aa %p - client evicted?\n",
2085 lockh->cookie, req, aa);
2087 /* Take an additional reference so that a blocking AST that
2088 * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
2089 * to arrive after an upcall has been executed by
2090 * osc_enqueue_fini(). */
2091 ldlm_lock_addref(lockh, mode);
2093 /* Let cl_lock_state_wait fail with -ERESTARTSYS to unuse sublocks. */
2094 OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_ENQUEUE_HANG, 2);
2096 /* Let CP AST to grant the lock first. */
2097 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
2100 LASSERT(aa->oa_lvb == NULL);
2101 LASSERT(aa->oa_flags == NULL);
2102 aa->oa_flags = &flags;
2105 /* Complete obtaining the lock procedure. */
2106 rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_type, 1,
2107 aa->oa_mode, aa->oa_flags, lvb, lvb_len,
2109 /* Complete osc stuff. */
2110 rc = osc_enqueue_fini(req, aa->oa_upcall, aa->oa_cookie, lockh, mode,
2111 aa->oa_flags, aa->oa_agl, rc);
2113 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
2115 ldlm_lock_decref(lockh, mode);
2116 LDLM_LOCK_PUT(lock);
2120 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
2122 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
2123 * from the 2nd OSC before a lock from the 1st one. This does not deadlock with
2124 * other synchronous requests, however keeping some locks and trying to obtain
2125 * others may take a considerable amount of time in a case of ost failure; and
2126 * when other sync requests do not get released lock from a client, the client
2127 * is evicted from the cluster -- such scenarious make the life difficult, so
2128 * release locks just after they are obtained. */
2129 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2130 __u64 *flags, ldlm_policy_data_t *policy,
2131 struct ost_lvb *lvb, int kms_valid,
2132 osc_enqueue_upcall_f upcall, void *cookie,
2133 struct ldlm_enqueue_info *einfo,
2134 struct ptlrpc_request_set *rqset, int async, int agl)
2136 struct obd_device *obd = exp->exp_obd;
2137 struct lustre_handle lockh = { 0 };
2138 struct ptlrpc_request *req = NULL;
2139 int intent = *flags & LDLM_FL_HAS_INTENT;
2140 __u64 match_lvb = agl ? 0 : LDLM_FL_LVB_READY;
2145 /* Filesystem lock extents are extended to page boundaries so that
2146 * dealing with the page cache is a little smoother. */
2147 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2148 policy->l_extent.end |= ~CFS_PAGE_MASK;
2151 * kms is not valid when either object is completely fresh (so that no
2152 * locks are cached), or object was evicted. In the latter case cached
2153 * lock cannot be used, because it would prime inode state with
2154 * potentially stale LVB.
2159 /* Next, search for already existing extent locks that will cover us */
2160 /* If we're trying to read, we also search for an existing PW lock. The
2161 * VFS and page cache already protect us locally, so lots of readers/
2162 * writers can share a single PW lock.
2164 * There are problems with conversion deadlocks, so instead of
2165 * converting a read lock to a write lock, we'll just enqueue a new
2168 * At some point we should cancel the read lock instead of making them
2169 * send us a blocking callback, but there are problems with canceling
2170 * locks out from other users right now, too. */
2171 mode = einfo->ei_mode;
2172 if (einfo->ei_mode == LCK_PR)
2174 mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
2175 einfo->ei_type, policy, mode, &lockh, 0);
2177 struct ldlm_lock *matched;
2179 if (*flags & LDLM_FL_TEST_LOCK)
2182 matched = ldlm_handle2lock(&lockh);
2184 /* AGL enqueues DLM locks speculatively. Therefore if
2185 * it already exists a DLM lock, it wll just inform the
2186 * caller to cancel the AGL process for this stripe. */
2187 ldlm_lock_decref(&lockh, mode);
2188 LDLM_LOCK_PUT(matched);
2190 } else if (osc_set_lock_data_with_check(matched, einfo)) {
2191 *flags |= LDLM_FL_LVB_READY;
2193 /* We already have a lock, and it's referenced. */
2194 (*upcall)(cookie, &lockh, ELDLM_LOCK_MATCHED);
2196 ldlm_lock_decref(&lockh, mode);
2197 LDLM_LOCK_PUT(matched);
2200 ldlm_lock_decref(&lockh, mode);
2201 LDLM_LOCK_PUT(matched);
2206 if (*flags & LDLM_FL_TEST_LOCK)
2210 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2211 &RQF_LDLM_ENQUEUE_LVB);
2215 rc = ptlrpc_request_pack(req, LUSTRE_DLM_VERSION, LDLM_ENQUEUE);
2217 ptlrpc_request_free(req);
2221 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
2223 ptlrpc_request_set_replen(req);
2226 /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
2227 *flags &= ~LDLM_FL_BLOCK_GRANTED;
2229 rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
2230 sizeof(*lvb), LVB_T_OST, &lockh, async);
2233 struct osc_enqueue_args *aa;
2234 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2235 aa = ptlrpc_req_async_args(req);
2237 aa->oa_mode = einfo->ei_mode;
2238 aa->oa_type = einfo->ei_type;
2239 lustre_handle_copy(&aa->oa_lockh, &lockh);
2240 aa->oa_upcall = upcall;
2241 aa->oa_cookie = cookie;
2244 aa->oa_flags = flags;
2247 /* AGL is essentially to enqueue an DLM lock
2248 * in advance, so we don't care about the
2249 * result of AGL enqueue. */
2251 aa->oa_flags = NULL;
2254 req->rq_interpret_reply =
2255 (ptlrpc_interpterer_t)osc_enqueue_interpret;
2256 if (rqset == PTLRPCD_SET)
2257 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2259 ptlrpc_set_add_req(rqset, req);
2260 } else if (intent) {
2261 ptlrpc_req_finished(req);
2266 rc = osc_enqueue_fini(req, upcall, cookie, &lockh, einfo->ei_mode,
2269 ptlrpc_req_finished(req);
2274 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2275 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2276 __u64 *flags, void *data, struct lustre_handle *lockh,
2279 struct obd_device *obd = exp->exp_obd;
2280 __u64 lflags = *flags;
2284 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
2287 /* Filesystem lock extents are extended to page boundaries so that
2288 * dealing with the page cache is a little smoother */
2289 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2290 policy->l_extent.end |= ~CFS_PAGE_MASK;
2292 /* Next, search for already existing extent locks that will cover us */
2293 /* If we're trying to read, we also search for an existing PW lock. The
2294 * VFS and page cache already protect us locally, so lots of readers/
2295 * writers can share a single PW lock. */
2299 rc = ldlm_lock_match(obd->obd_namespace, lflags,
2300 res_id, type, policy, rc, lockh, unref);
2303 if (!osc_set_data_with_check(lockh, data)) {
2304 if (!(lflags & LDLM_FL_TEST_LOCK))
2305 ldlm_lock_decref(lockh, rc);
2309 if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
2310 ldlm_lock_addref(lockh, LCK_PR);
2311 ldlm_lock_decref(lockh, LCK_PW);
2318 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
2322 if (unlikely(mode == LCK_GROUP))
2323 ldlm_lock_decref_and_cancel(lockh, mode);
2325 ldlm_lock_decref(lockh, mode);
2330 static int osc_statfs_interpret(const struct lu_env *env,
2331 struct ptlrpc_request *req,
2332 struct osc_async_args *aa, int rc)
2334 struct obd_statfs *msfs;
2338 /* The request has in fact never been sent
2339 * due to issues at a higher level (LOV).
2340 * Exit immediately since the caller is
2341 * aware of the problem and takes care
2342 * of the clean up */
2345 if ((rc == -ENOTCONN || rc == -EAGAIN) &&
2346 (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
2352 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2354 GOTO(out, rc = -EPROTO);
2357 *aa->aa_oi->oi_osfs = *msfs;
2359 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
2363 static int osc_statfs_async(struct obd_export *exp,
2364 struct obd_info *oinfo, __u64 max_age,
2365 struct ptlrpc_request_set *rqset)
2367 struct obd_device *obd = class_exp2obd(exp);
2368 struct ptlrpc_request *req;
2369 struct osc_async_args *aa;
2373 /* We could possibly pass max_age in the request (as an absolute
2374 * timestamp or a "seconds.usec ago") so the target can avoid doing
2375 * extra calls into the filesystem if that isn't necessary (e.g.
2376 * during mount that would help a bit). Having relative timestamps
2377 * is not so great if request processing is slow, while absolute
2378 * timestamps are not ideal because they need time synchronization. */
2379 req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
2383 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2385 ptlrpc_request_free(req);
2388 ptlrpc_request_set_replen(req);
2389 req->rq_request_portal = OST_CREATE_PORTAL;
2390 ptlrpc_at_set_req_timeout(req);
2392 if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
2393 /* procfs requests not want stat in wait for avoid deadlock */
2394 req->rq_no_resend = 1;
2395 req->rq_no_delay = 1;
2398 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
2399 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2400 aa = ptlrpc_req_async_args(req);
2403 ptlrpc_set_add_req(rqset, req);
2407 static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
2408 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
2410 struct obd_device *obd = class_exp2obd(exp);
2411 struct obd_statfs *msfs;
2412 struct ptlrpc_request *req;
2413 struct obd_import *imp = NULL;
2417 /*Since the request might also come from lprocfs, so we need
2418 *sync this with client_disconnect_export Bug15684*/
2419 down_read(&obd->u.cli.cl_sem);
2420 if (obd->u.cli.cl_import)
2421 imp = class_import_get(obd->u.cli.cl_import);
2422 up_read(&obd->u.cli.cl_sem);
2426 /* We could possibly pass max_age in the request (as an absolute
2427 * timestamp or a "seconds.usec ago") so the target can avoid doing
2428 * extra calls into the filesystem if that isn't necessary (e.g.
2429 * during mount that would help a bit). Having relative timestamps
2430 * is not so great if request processing is slow, while absolute
2431 * timestamps are not ideal because they need time synchronization. */
2432 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
2434 class_import_put(imp);
2439 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2441 ptlrpc_request_free(req);
2444 ptlrpc_request_set_replen(req);
2445 req->rq_request_portal = OST_CREATE_PORTAL;
2446 ptlrpc_at_set_req_timeout(req);
2448 if (flags & OBD_STATFS_NODELAY) {
2449 /* procfs requests not want stat in wait for avoid deadlock */
2450 req->rq_no_resend = 1;
2451 req->rq_no_delay = 1;
2454 rc = ptlrpc_queue_wait(req);
2458 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2460 GOTO(out, rc = -EPROTO);
2467 ptlrpc_req_finished(req);
2471 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2472 void *karg, void *uarg)
2474 struct obd_device *obd = exp->exp_obd;
2475 struct obd_ioctl_data *data = karg;
2479 if (!try_module_get(THIS_MODULE)) {
2480 CERROR("%s: cannot get module '%s'\n", obd->obd_name,
2481 module_name(THIS_MODULE));
2485 case OBD_IOC_CLIENT_RECOVER:
2486 err = ptlrpc_recover_import(obd->u.cli.cl_import,
2487 data->ioc_inlbuf1, 0);
2491 case IOC_OSC_SET_ACTIVE:
2492 err = ptlrpc_set_import_active(obd->u.cli.cl_import,
2495 case OBD_IOC_POLL_QUOTACHECK:
2496 err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2498 case OBD_IOC_PING_TARGET:
2499 err = ptlrpc_obd_ping(obd);
2502 CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
2503 cmd, current_comm());
2504 GOTO(out, err = -ENOTTY);
2507 module_put(THIS_MODULE);
2511 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
2512 obd_count keylen, void *key, __u32 *vallen, void *val,
2513 struct lov_stripe_md *lsm)
2516 if (!vallen || !val)
2519 if (KEY_IS(KEY_FIEMAP)) {
2520 struct ll_fiemap_info_key *fm_key =
2521 (struct ll_fiemap_info_key *)key;
2522 struct ldlm_res_id res_id;
2523 ldlm_policy_data_t policy;
2524 struct lustre_handle lockh;
2525 ldlm_mode_t mode = 0;
2526 struct ptlrpc_request *req;
2527 struct ll_user_fiemap *reply;
2531 if (!(fm_key->fiemap.fm_flags & FIEMAP_FLAG_SYNC))
2534 policy.l_extent.start = fm_key->fiemap.fm_start &
2537 if (OBD_OBJECT_EOF - fm_key->fiemap.fm_length <=
2538 fm_key->fiemap.fm_start + PAGE_CACHE_SIZE - 1)
2539 policy.l_extent.end = OBD_OBJECT_EOF;
2541 policy.l_extent.end = (fm_key->fiemap.fm_start +
2542 fm_key->fiemap.fm_length +
2543 PAGE_CACHE_SIZE - 1) & CFS_PAGE_MASK;
2545 ostid_build_res_name(&fm_key->oa.o_oi, &res_id);
2546 mode = ldlm_lock_match(exp->exp_obd->obd_namespace,
2547 LDLM_FL_BLOCK_GRANTED |
2549 &res_id, LDLM_EXTENT, &policy,
2550 LCK_PR | LCK_PW, &lockh, 0);
2551 if (mode) { /* lock is cached on client */
2552 if (mode != LCK_PR) {
2553 ldlm_lock_addref(&lockh, LCK_PR);
2554 ldlm_lock_decref(&lockh, LCK_PW);
2556 } else { /* no cached lock, needs acquire lock on server side */
2557 fm_key->oa.o_valid |= OBD_MD_FLFLAGS;
2558 fm_key->oa.o_flags |= OBD_FL_SRVLOCK;
2562 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2563 &RQF_OST_GET_INFO_FIEMAP);
2565 GOTO(drop_lock, rc = -ENOMEM);
2567 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
2568 RCL_CLIENT, keylen);
2569 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
2570 RCL_CLIENT, *vallen);
2571 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
2572 RCL_SERVER, *vallen);
2574 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
2576 ptlrpc_request_free(req);
2577 GOTO(drop_lock, rc);
2580 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
2581 memcpy(tmp, key, keylen);
2582 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
2583 memcpy(tmp, val, *vallen);
2585 ptlrpc_request_set_replen(req);
2586 rc = ptlrpc_queue_wait(req);
2590 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
2592 GOTO(fini_req, rc = -EPROTO);
2594 memcpy(val, reply, *vallen);
2596 ptlrpc_req_finished(req);
2599 ldlm_lock_decref(&lockh, LCK_PR);
2606 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
2607 obd_count keylen, void *key, obd_count vallen,
2608 void *val, struct ptlrpc_request_set *set)
2610 struct ptlrpc_request *req;
2611 struct obd_device *obd = exp->exp_obd;
2612 struct obd_import *imp = class_exp2cliimp(exp);
2617 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
2619 if (KEY_IS(KEY_CHECKSUM)) {
2620 if (vallen != sizeof(int))
2622 exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
2626 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2627 sptlrpc_conf_client_adapt(obd);
2631 if (KEY_IS(KEY_FLUSH_CTX)) {
2632 sptlrpc_import_flush_my_ctx(imp);
2636 if (KEY_IS(KEY_CACHE_SET)) {
2637 struct client_obd *cli = &obd->u.cli;
2639 LASSERT(cli->cl_cache == NULL); /* only once */
2640 cli->cl_cache = (struct cl_client_cache *)val;
2641 atomic_inc(&cli->cl_cache->ccc_users);
2642 cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
2644 /* add this osc into entity list */
2645 LASSERT(list_empty(&cli->cl_lru_osc));
2646 spin_lock(&cli->cl_cache->ccc_lru_lock);
2647 list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
2648 spin_unlock(&cli->cl_cache->ccc_lru_lock);
2653 if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
2654 struct client_obd *cli = &obd->u.cli;
2655 long nr = atomic_long_read(&cli->cl_lru_in_list) >> 1;
2656 long target = *(long *)val;
2658 nr = osc_lru_shrink(env, cli, min(nr, target), true);
2663 if (!set && !KEY_IS(KEY_GRANT_SHRINK))
2666 /* We pass all other commands directly to OST. Since nobody calls osc
2667 methods directly and everybody is supposed to go through LOV, we
2668 assume lov checked invalid values for us.
2669 The only recognised values so far are evict_by_nid and mds_conn.
2670 Even if something bad goes through, we'd get a -EINVAL from OST
2673 req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
2674 &RQF_OST_SET_GRANT_INFO :
2679 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
2680 RCL_CLIENT, keylen);
2681 if (!KEY_IS(KEY_GRANT_SHRINK))
2682 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
2683 RCL_CLIENT, vallen);
2684 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
2686 ptlrpc_request_free(req);
2690 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
2691 memcpy(tmp, key, keylen);
2692 tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
2695 memcpy(tmp, val, vallen);
2697 if (KEY_IS(KEY_GRANT_SHRINK)) {
2698 struct osc_grant_args *aa;
2701 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2702 aa = ptlrpc_req_async_args(req);
2705 ptlrpc_req_finished(req);
2708 *oa = ((struct ost_body *)val)->oa;
2710 req->rq_interpret_reply = osc_shrink_grant_interpret;
2713 ptlrpc_request_set_replen(req);
2714 if (!KEY_IS(KEY_GRANT_SHRINK)) {
2715 LASSERT(set != NULL);
2716 ptlrpc_set_add_req(set, req);
2717 ptlrpc_check_set(NULL, set);
2719 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2724 static int osc_reconnect(const struct lu_env *env,
2725 struct obd_export *exp, struct obd_device *obd,
2726 struct obd_uuid *cluuid,
2727 struct obd_connect_data *data,
2730 struct client_obd *cli = &obd->u.cli;
2732 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
2735 spin_lock(&cli->cl_loi_list_lock);
2736 data->ocd_grant = (cli->cl_avail_grant +
2737 (cli->cl_dirty_pages << PAGE_CACHE_SHIFT)) ?:
2738 2 * cli_brw_size(obd);
2739 lost_grant = cli->cl_lost_grant;
2740 cli->cl_lost_grant = 0;
2741 spin_unlock(&cli->cl_loi_list_lock);
2743 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d"
2744 " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags,
2745 data->ocd_version, data->ocd_grant, lost_grant);
2751 static int osc_disconnect(struct obd_export *exp)
2753 struct obd_device *obd = class_exp2obd(exp);
2756 rc = client_disconnect_export(exp);
2758 * Initially we put del_shrink_grant before disconnect_export, but it
2759 * causes the following problem if setup (connect) and cleanup
2760 * (disconnect) are tangled together.
2761 * connect p1 disconnect p2
2762 * ptlrpc_connect_import
2763 * ............... class_manual_cleanup
2766 * ptlrpc_connect_interrupt
2768 * add this client to shrink list
2770 * Bang! pinger trigger the shrink.
2771 * So the osc should be disconnected from the shrink list, after we
2772 * are sure the import has been destroyed. BUG18662
2774 if (obd->u.cli.cl_import == NULL)
2775 osc_del_shrink_grant(&obd->u.cli);
2779 static int osc_import_event(struct obd_device *obd,
2780 struct obd_import *imp,
2781 enum obd_import_event event)
2783 struct client_obd *cli;
2787 LASSERT(imp->imp_obd == obd);
2790 case IMP_EVENT_DISCON: {
2792 spin_lock(&cli->cl_loi_list_lock);
2793 cli->cl_avail_grant = 0;
2794 cli->cl_lost_grant = 0;
2795 spin_unlock(&cli->cl_loi_list_lock);
2798 case IMP_EVENT_INACTIVE: {
2799 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
2802 case IMP_EVENT_INVALIDATE: {
2803 struct ldlm_namespace *ns = obd->obd_namespace;
2807 env = cl_env_get(&refcheck);
2811 /* all pages go to failing rpcs due to the invalid
2813 osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND);
2815 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2816 cl_env_put(env, &refcheck);
2821 case IMP_EVENT_ACTIVE: {
2822 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
2825 case IMP_EVENT_OCD: {
2826 struct obd_connect_data *ocd = &imp->imp_connect_data;
2828 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
2829 osc_init_grant(&obd->u.cli, ocd);
2832 if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
2833 imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL;
2835 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
2838 case IMP_EVENT_DEACTIVATE: {
2839 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
2842 case IMP_EVENT_ACTIVATE: {
2843 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
2847 CERROR("Unknown import event %d\n", event);
2854 * Determine whether the lock can be canceled before replaying the lock
2855 * during recovery, see bug16774 for detailed information.
2857 * \retval zero the lock can't be canceled
2858 * \retval other ok to cancel
2860 static int osc_cancel_weight(struct ldlm_lock *lock)
2863 * Cancel all unused and granted extent lock.
2865 if (lock->l_resource->lr_type == LDLM_EXTENT &&
2866 lock->l_granted_mode == lock->l_req_mode &&
2867 osc_ldlm_weigh_ast(lock) == 0)
2873 static int brw_queue_work(const struct lu_env *env, void *data)
2875 struct client_obd *cli = data;
2877 CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
2879 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
2883 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
2885 struct client_obd *cli = &obd->u.cli;
2886 struct obd_type *type;
2891 rc = ptlrpcd_addref();
2895 rc = client_obd_setup(obd, lcfg);
2897 GOTO(out_ptlrpcd, rc);
2899 handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
2900 if (IS_ERR(handler))
2901 GOTO(out_client_setup, rc = PTR_ERR(handler));
2902 cli->cl_writeback_work = handler;
2904 handler = ptlrpcd_alloc_work(cli->cl_import, lru_queue_work, cli);
2905 if (IS_ERR(handler))
2906 GOTO(out_ptlrpcd_work, rc = PTR_ERR(handler));
2907 cli->cl_lru_work = handler;
2909 rc = osc_quota_setup(obd);
2911 GOTO(out_ptlrpcd_work, rc);
2913 cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
2915 #ifdef CONFIG_PROC_FS
2916 obd->obd_vars = lprocfs_osc_obd_vars;
2918 /* If this is true then both client (osc) and server (osp) are on the
2919 * same node. The osp layer if loaded first will register the osc proc
2920 * directory. In that case this obd_device will be attached its proc
2921 * tree to type->typ_procsym instead of obd->obd_type->typ_procroot. */
2922 type = class_search_type(LUSTRE_OSP_NAME);
2923 if (type && type->typ_procsym) {
2924 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
2926 obd->obd_vars, obd);
2927 if (IS_ERR(obd->obd_proc_entry)) {
2928 rc = PTR_ERR(obd->obd_proc_entry);
2929 CERROR("error %d setting up lprocfs for %s\n", rc,
2931 obd->obd_proc_entry = NULL;
2934 rc = lprocfs_obd_setup(obd);
2937 /* If the basic OSC proc tree construction succeeded then
2938 * lets do the rest. */
2940 lproc_osc_attach_seqstat(obd);
2941 sptlrpc_lprocfs_cliobd_attach(obd);
2942 ptlrpc_lprocfs_register_obd(obd);
2945 /* We need to allocate a few requests more, because
2946 * brw_interpret tries to create new requests before freeing
2947 * previous ones, Ideally we want to have 2x max_rpcs_in_flight
2948 * reserved, but I'm afraid that might be too much wasted RAM
2949 * in fact, so 2 is just my guess and still should work. */
2950 cli->cl_import->imp_rq_pool =
2951 ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2,
2953 ptlrpc_add_rqs_to_pool);
2955 INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
2956 ns_register_cancel(obd->obd_namespace, osc_cancel_weight);
2960 if (cli->cl_writeback_work != NULL) {
2961 ptlrpcd_destroy_work(cli->cl_writeback_work);
2962 cli->cl_writeback_work = NULL;
2964 if (cli->cl_lru_work != NULL) {
2965 ptlrpcd_destroy_work(cli->cl_lru_work);
2966 cli->cl_lru_work = NULL;
2969 client_obd_cleanup(obd);
2975 static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2981 case OBD_CLEANUP_EARLY: {
2982 struct obd_import *imp;
2983 imp = obd->u.cli.cl_import;
2984 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
2985 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
2986 ptlrpc_deactivate_import(imp);
2987 spin_lock(&imp->imp_lock);
2988 imp->imp_pingable = 0;
2989 spin_unlock(&imp->imp_lock);
2992 case OBD_CLEANUP_EXPORTS: {
2993 struct client_obd *cli = &obd->u.cli;
2995 * for echo client, export may be on zombie list, wait for
2996 * zombie thread to cull it, because cli.cl_import will be
2997 * cleared in client_disconnect_export():
2998 * class_export_destroy() -> obd_cleanup() ->
2999 * echo_device_free() -> echo_client_cleanup() ->
3000 * obd_disconnect() -> osc_disconnect() ->
3001 * client_disconnect_export()
3003 obd_zombie_barrier();
3004 if (cli->cl_writeback_work) {
3005 ptlrpcd_destroy_work(cli->cl_writeback_work);
3006 cli->cl_writeback_work = NULL;
3008 if (cli->cl_lru_work) {
3009 ptlrpcd_destroy_work(cli->cl_lru_work);
3010 cli->cl_lru_work = NULL;
3012 obd_cleanup_client_import(obd);
3013 ptlrpc_lprocfs_unregister_obd(obd);
3014 lprocfs_obd_cleanup(obd);
3021 int osc_cleanup(struct obd_device *obd)
3023 struct client_obd *cli = &obd->u.cli;
3029 if (cli->cl_cache != NULL) {
3030 LASSERT(atomic_read(&cli->cl_cache->ccc_users) > 0);
3031 spin_lock(&cli->cl_cache->ccc_lru_lock);
3032 list_del_init(&cli->cl_lru_osc);
3033 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3034 cli->cl_lru_left = NULL;
3035 atomic_dec(&cli->cl_cache->ccc_users);
3036 cli->cl_cache = NULL;
3039 /* free memory of osc quota cache */
3040 osc_quota_cleanup(obd);
3042 rc = client_obd_cleanup(obd);
3048 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
3050 int rc = class_process_proc_param(PARAM_OSC, obd->obd_vars, lcfg, obd);
3051 return rc > 0 ? 0: rc;
3054 static int osc_process_config(struct obd_device *obd, size_t len, void *buf)
3056 return osc_process_config_base(obd, buf);
3059 static struct obd_ops osc_obd_ops = {
3060 .o_owner = THIS_MODULE,
3061 .o_setup = osc_setup,
3062 .o_precleanup = osc_precleanup,
3063 .o_cleanup = osc_cleanup,
3064 .o_add_conn = client_import_add_conn,
3065 .o_del_conn = client_import_del_conn,
3066 .o_connect = client_connect_import,
3067 .o_reconnect = osc_reconnect,
3068 .o_disconnect = osc_disconnect,
3069 .o_statfs = osc_statfs,
3070 .o_statfs_async = osc_statfs_async,
3071 .o_create = osc_create,
3072 .o_destroy = osc_destroy,
3073 .o_getattr = osc_getattr,
3074 .o_getattr_async = osc_getattr_async,
3075 .o_setattr = osc_setattr,
3076 .o_setattr_async = osc_setattr_async,
3077 .o_iocontrol = osc_iocontrol,
3078 .o_get_info = osc_get_info,
3079 .o_set_info_async = osc_set_info_async,
3080 .o_import_event = osc_import_event,
3081 .o_process_config = osc_process_config,
3082 .o_quotactl = osc_quotactl,
3083 .o_quotacheck = osc_quotacheck,
3086 static int __init osc_init(void)
3088 bool enable_proc = true;
3089 struct obd_type *type;
3093 /* print an address of _any_ initialized kernel symbol from this
3094 * module, to allow debugging with gdb that doesn't support data
3095 * symbols from modules.*/
3096 CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
3098 rc = lu_kmem_init(osc_caches);
3102 type = class_search_type(LUSTRE_OSP_NAME);
3103 if (type != NULL && type->typ_procsym != NULL)
3104 enable_proc = false;
3106 rc = class_register_type(&osc_obd_ops, NULL, enable_proc, NULL,
3107 LUSTRE_OSC_NAME, &osc_device_type);
3109 lu_kmem_fini(osc_caches);
3116 static void /*__exit*/ osc_exit(void)
3118 class_unregister_type(LUSTRE_OSC_NAME);
3119 lu_kmem_fini(osc_caches);
3122 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3123 MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
3124 MODULE_LICENSE("GPL");
3126 cfs_module(osc, LUSTRE_VERSION_STRING, osc_init, osc_exit);