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, 2013, 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 client_obd_list_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 client_obd_list_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 client_obd_list_lock(&cli->cl_loi_list_lock);
752 cli->cl_avail_grant += grant;
753 client_obd_list_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 client_obd_list_lock(&cli->cl_loi_list_lock);
792 oa->o_grant = cli->cl_avail_grant / 4;
793 cli->cl_avail_grant -= oa->o_grant;
794 client_obd_list_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 client_obd_list_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 client_obd_list_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 client_obd_list_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 client_obd_list_unlock(&cli->cl_loi_list_lock);
837 client_obd_list_unlock(&cli->cl_loi_list_lock);
843 osc_announce_cached(cli, &body->oa, 0);
845 client_obd_list_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 client_obd_list_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 client_obd_list_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 client_obd_list_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 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(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_set(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 client_obd_list_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 client_obd_list_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);
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 cl_req_attr_set(env, clerq, crattr,
1893 OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
1895 lustre_msg_set_jobid(req->rq_reqmsg, crattr->cra_jobid);
1897 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1898 aa = ptlrpc_req_async_args(req);
1899 INIT_LIST_HEAD(&aa->aa_oaps);
1900 list_splice_init(&rpc_list, &aa->aa_oaps);
1901 INIT_LIST_HEAD(&aa->aa_exts);
1902 list_splice_init(ext_list, &aa->aa_exts);
1903 aa->aa_clerq = clerq;
1905 /* queued sync pages can be torn down while the pages
1906 * were between the pending list and the rpc */
1908 list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1909 /* only one oap gets a request reference */
1912 if (oap->oap_interrupted && !req->rq_intr) {
1913 CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
1915 ptlrpc_mark_interrupted(req);
1919 tmp->oap_request = ptlrpc_request_addref(req);
1921 client_obd_list_lock(&cli->cl_loi_list_lock);
1922 starting_offset >>= PAGE_CACHE_SHIFT;
1923 if (cmd == OBD_BRW_READ) {
1924 cli->cl_r_in_flight++;
1925 lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
1926 lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
1927 lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
1928 starting_offset + 1);
1930 cli->cl_w_in_flight++;
1931 lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
1932 lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
1933 lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
1934 starting_offset + 1);
1936 client_obd_list_unlock(&cli->cl_loi_list_lock);
1938 DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %ur/%uw in flight",
1939 page_count, aa, cli->cl_r_in_flight,
1940 cli->cl_w_in_flight);
1942 /* XXX: Maybe the caller can check the RPC bulk descriptor to
1943 * see which CPU/NUMA node the majority of pages were allocated
1944 * on, and try to assign the async RPC to the CPU core
1945 * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic.
1947 * But on the other hand, we expect that multiple ptlrpcd
1948 * threads and the initial write sponsor can run in parallel,
1949 * especially when data checksum is enabled, which is CPU-bound
1950 * operation and single ptlrpcd thread cannot process in time.
1951 * So more ptlrpcd threads sharing BRW load
1952 * (with PDL_POLICY_ROUND) seems better.
1954 ptlrpcd_add_req(req, pol, -1);
1960 cfs_memory_pressure_restore(mpflag);
1962 if (crattr != NULL) {
1963 capa_put(crattr->cra_capa);
1964 OBD_FREE(crattr, sizeof(*crattr));
1968 LASSERT(req == NULL);
1973 OBD_FREE(pga, sizeof(*pga) * page_count);
1974 /* this should happen rarely and is pretty bad, it makes the
1975 * pending list not follow the dirty order */
1976 while (!list_empty(ext_list)) {
1977 ext = list_entry(ext_list->next, struct osc_extent,
1979 list_del_init(&ext->oe_link);
1980 osc_extent_finish(env, ext, 0, rc);
1982 if (clerq && !IS_ERR(clerq))
1983 cl_req_completion(env, clerq, rc);
1988 static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
1989 struct ldlm_enqueue_info *einfo)
1991 void *data = einfo->ei_cbdata;
1994 LASSERT(lock != NULL);
1995 LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
1996 LASSERT(lock->l_resource->lr_type == einfo->ei_type);
1997 LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
1998 LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
2000 lock_res_and_lock(lock);
2002 if (lock->l_ast_data == NULL)
2003 lock->l_ast_data = data;
2004 if (lock->l_ast_data == data)
2007 unlock_res_and_lock(lock);
2012 static int osc_set_data_with_check(struct lustre_handle *lockh,
2013 struct ldlm_enqueue_info *einfo)
2015 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
2019 set = osc_set_lock_data_with_check(lock, einfo);
2020 LDLM_LOCK_PUT(lock);
2022 CERROR("lockh %p, data %p - client evicted?\n",
2023 lockh, einfo->ei_cbdata);
2027 static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2028 ldlm_iterator_t replace, void *data)
2030 struct ldlm_res_id res_id;
2031 struct obd_device *obd = class_exp2obd(exp);
2033 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2034 ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2038 /* find any ldlm lock of the inode in osc
2042 static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2043 ldlm_iterator_t replace, void *data)
2045 struct ldlm_res_id res_id;
2046 struct obd_device *obd = class_exp2obd(exp);
2049 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2050 rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2051 if (rc == LDLM_ITER_STOP)
2053 if (rc == LDLM_ITER_CONTINUE)
2058 static int osc_enqueue_fini(struct ptlrpc_request *req,
2059 osc_enqueue_upcall_f upcall, void *cookie,
2060 struct lustre_handle *lockh, ldlm_mode_t mode,
2061 __u64 *flags, int agl, int errcode)
2063 bool intent = *flags & LDLM_FL_HAS_INTENT;
2067 /* The request was created before ldlm_cli_enqueue call. */
2068 if (intent && errcode == ELDLM_LOCK_ABORTED) {
2069 struct ldlm_reply *rep;
2071 rep = req_capsule_server_get(&req->rq_pill, &RMF_DLM_REP);
2072 LASSERT(rep != NULL);
2074 rep->lock_policy_res1 =
2075 ptlrpc_status_ntoh(rep->lock_policy_res1);
2076 if (rep->lock_policy_res1)
2077 errcode = rep->lock_policy_res1;
2079 *flags |= LDLM_FL_LVB_READY;
2080 } else if (errcode == ELDLM_OK) {
2081 *flags |= LDLM_FL_LVB_READY;
2084 /* Call the update callback. */
2085 rc = (*upcall)(cookie, lockh, errcode);
2087 /* release the reference taken in ldlm_cli_enqueue() */
2088 if (errcode == ELDLM_LOCK_MATCHED)
2090 if (errcode == ELDLM_OK && lustre_handle_is_used(lockh))
2091 ldlm_lock_decref(lockh, mode);
2096 static int osc_enqueue_interpret(const struct lu_env *env,
2097 struct ptlrpc_request *req,
2098 struct osc_enqueue_args *aa, int rc)
2100 struct ldlm_lock *lock;
2101 struct lustre_handle *lockh = &aa->oa_lockh;
2102 ldlm_mode_t mode = aa->oa_mode;
2103 struct ost_lvb *lvb = aa->oa_lvb;
2104 __u32 lvb_len = sizeof(*lvb);
2109 /* ldlm_cli_enqueue is holding a reference on the lock, so it must
2111 lock = ldlm_handle2lock(lockh);
2112 LASSERTF(lock != NULL,
2113 "lockh "LPX64", req %p, aa %p - client evicted?\n",
2114 lockh->cookie, req, aa);
2116 /* Take an additional reference so that a blocking AST that
2117 * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
2118 * to arrive after an upcall has been executed by
2119 * osc_enqueue_fini(). */
2120 ldlm_lock_addref(lockh, mode);
2122 /* Let cl_lock_state_wait fail with -ERESTARTSYS to unuse sublocks. */
2123 OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_ENQUEUE_HANG, 2);
2125 /* Let CP AST to grant the lock first. */
2126 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
2129 LASSERT(aa->oa_lvb == NULL);
2130 LASSERT(aa->oa_flags == NULL);
2131 aa->oa_flags = &flags;
2134 /* Complete obtaining the lock procedure. */
2135 rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_type, 1,
2136 aa->oa_mode, aa->oa_flags, lvb, lvb_len,
2138 /* Complete osc stuff. */
2139 rc = osc_enqueue_fini(req, aa->oa_upcall, aa->oa_cookie, lockh, mode,
2140 aa->oa_flags, aa->oa_agl, rc);
2142 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
2144 ldlm_lock_decref(lockh, mode);
2145 LDLM_LOCK_PUT(lock);
2149 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
2151 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
2152 * from the 2nd OSC before a lock from the 1st one. This does not deadlock with
2153 * other synchronous requests, however keeping some locks and trying to obtain
2154 * others may take a considerable amount of time in a case of ost failure; and
2155 * when other sync requests do not get released lock from a client, the client
2156 * is evicted from the cluster -- such scenarious make the life difficult, so
2157 * release locks just after they are obtained. */
2158 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2159 __u64 *flags, ldlm_policy_data_t *policy,
2160 struct ost_lvb *lvb, int kms_valid,
2161 osc_enqueue_upcall_f upcall, void *cookie,
2162 struct ldlm_enqueue_info *einfo,
2163 struct ptlrpc_request_set *rqset, int async, int agl)
2165 struct obd_device *obd = exp->exp_obd;
2166 struct lustre_handle lockh = { 0 };
2167 struct ptlrpc_request *req = NULL;
2168 int intent = *flags & LDLM_FL_HAS_INTENT;
2169 __u64 match_lvb = agl ? 0 : LDLM_FL_LVB_READY;
2174 /* Filesystem lock extents are extended to page boundaries so that
2175 * dealing with the page cache is a little smoother. */
2176 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2177 policy->l_extent.end |= ~CFS_PAGE_MASK;
2180 * kms is not valid when either object is completely fresh (so that no
2181 * locks are cached), or object was evicted. In the latter case cached
2182 * lock cannot be used, because it would prime inode state with
2183 * potentially stale LVB.
2188 /* Next, search for already existing extent locks that will cover us */
2189 /* If we're trying to read, we also search for an existing PW lock. The
2190 * VFS and page cache already protect us locally, so lots of readers/
2191 * writers can share a single PW lock.
2193 * There are problems with conversion deadlocks, so instead of
2194 * converting a read lock to a write lock, we'll just enqueue a new
2197 * At some point we should cancel the read lock instead of making them
2198 * send us a blocking callback, but there are problems with canceling
2199 * locks out from other users right now, too. */
2200 mode = einfo->ei_mode;
2201 if (einfo->ei_mode == LCK_PR)
2203 mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
2204 einfo->ei_type, policy, mode, &lockh, 0);
2206 struct ldlm_lock *matched;
2208 if (*flags & LDLM_FL_TEST_LOCK)
2211 matched = ldlm_handle2lock(&lockh);
2213 /* AGL enqueues DLM locks speculatively. Therefore if
2214 * it already exists a DLM lock, it wll just inform the
2215 * caller to cancel the AGL process for this stripe. */
2216 ldlm_lock_decref(&lockh, mode);
2217 LDLM_LOCK_PUT(matched);
2219 } else if (osc_set_lock_data_with_check(matched, einfo)) {
2220 *flags |= LDLM_FL_LVB_READY;
2222 /* We already have a lock, and it's referenced. */
2223 (*upcall)(cookie, &lockh, ELDLM_LOCK_MATCHED);
2225 ldlm_lock_decref(&lockh, mode);
2226 LDLM_LOCK_PUT(matched);
2229 ldlm_lock_decref(&lockh, mode);
2230 LDLM_LOCK_PUT(matched);
2235 if (*flags & LDLM_FL_TEST_LOCK)
2239 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2240 &RQF_LDLM_ENQUEUE_LVB);
2244 rc = ptlrpc_request_pack(req, LUSTRE_DLM_VERSION, LDLM_ENQUEUE);
2246 ptlrpc_request_free(req);
2250 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
2252 ptlrpc_request_set_replen(req);
2255 /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
2256 *flags &= ~LDLM_FL_BLOCK_GRANTED;
2258 rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
2259 sizeof(*lvb), LVB_T_OST, &lockh, async);
2262 struct osc_enqueue_args *aa;
2263 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2264 aa = ptlrpc_req_async_args(req);
2266 aa->oa_mode = einfo->ei_mode;
2267 aa->oa_type = einfo->ei_type;
2268 lustre_handle_copy(&aa->oa_lockh, &lockh);
2269 aa->oa_upcall = upcall;
2270 aa->oa_cookie = cookie;
2273 aa->oa_flags = flags;
2276 /* AGL is essentially to enqueue an DLM lock
2277 * in advance, so we don't care about the
2278 * result of AGL enqueue. */
2280 aa->oa_flags = NULL;
2283 req->rq_interpret_reply =
2284 (ptlrpc_interpterer_t)osc_enqueue_interpret;
2285 if (rqset == PTLRPCD_SET)
2286 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2288 ptlrpc_set_add_req(rqset, req);
2289 } else if (intent) {
2290 ptlrpc_req_finished(req);
2295 rc = osc_enqueue_fini(req, upcall, cookie, &lockh, einfo->ei_mode,
2298 ptlrpc_req_finished(req);
2303 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2304 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2305 __u64 *flags, void *data, struct lustre_handle *lockh,
2308 struct obd_device *obd = exp->exp_obd;
2309 __u64 lflags = *flags;
2313 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
2316 /* Filesystem lock extents are extended to page boundaries so that
2317 * dealing with the page cache is a little smoother */
2318 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2319 policy->l_extent.end |= ~CFS_PAGE_MASK;
2321 /* Next, search for already existing extent locks that will cover us */
2322 /* If we're trying to read, we also search for an existing PW lock. The
2323 * VFS and page cache already protect us locally, so lots of readers/
2324 * writers can share a single PW lock. */
2328 rc = ldlm_lock_match(obd->obd_namespace, lflags,
2329 res_id, type, policy, rc, lockh, unref);
2332 if (!osc_set_data_with_check(lockh, data)) {
2333 if (!(lflags & LDLM_FL_TEST_LOCK))
2334 ldlm_lock_decref(lockh, rc);
2338 if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
2339 ldlm_lock_addref(lockh, LCK_PR);
2340 ldlm_lock_decref(lockh, LCK_PW);
2347 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
2351 if (unlikely(mode == LCK_GROUP))
2352 ldlm_lock_decref_and_cancel(lockh, mode);
2354 ldlm_lock_decref(lockh, mode);
2359 static int osc_statfs_interpret(const struct lu_env *env,
2360 struct ptlrpc_request *req,
2361 struct osc_async_args *aa, int rc)
2363 struct obd_statfs *msfs;
2367 /* The request has in fact never been sent
2368 * due to issues at a higher level (LOV).
2369 * Exit immediately since the caller is
2370 * aware of the problem and takes care
2371 * of the clean up */
2374 if ((rc == -ENOTCONN || rc == -EAGAIN) &&
2375 (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
2381 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2383 GOTO(out, rc = -EPROTO);
2386 *aa->aa_oi->oi_osfs = *msfs;
2388 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
2392 static int osc_statfs_async(struct obd_export *exp,
2393 struct obd_info *oinfo, __u64 max_age,
2394 struct ptlrpc_request_set *rqset)
2396 struct obd_device *obd = class_exp2obd(exp);
2397 struct ptlrpc_request *req;
2398 struct osc_async_args *aa;
2402 /* We could possibly pass max_age in the request (as an absolute
2403 * timestamp or a "seconds.usec ago") so the target can avoid doing
2404 * extra calls into the filesystem if that isn't necessary (e.g.
2405 * during mount that would help a bit). Having relative timestamps
2406 * is not so great if request processing is slow, while absolute
2407 * timestamps are not ideal because they need time synchronization. */
2408 req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
2412 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2414 ptlrpc_request_free(req);
2417 ptlrpc_request_set_replen(req);
2418 req->rq_request_portal = OST_CREATE_PORTAL;
2419 ptlrpc_at_set_req_timeout(req);
2421 if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
2422 /* procfs requests not want stat in wait for avoid deadlock */
2423 req->rq_no_resend = 1;
2424 req->rq_no_delay = 1;
2427 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
2428 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2429 aa = ptlrpc_req_async_args(req);
2432 ptlrpc_set_add_req(rqset, req);
2436 static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
2437 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
2439 struct obd_device *obd = class_exp2obd(exp);
2440 struct obd_statfs *msfs;
2441 struct ptlrpc_request *req;
2442 struct obd_import *imp = NULL;
2446 /*Since the request might also come from lprocfs, so we need
2447 *sync this with client_disconnect_export Bug15684*/
2448 down_read(&obd->u.cli.cl_sem);
2449 if (obd->u.cli.cl_import)
2450 imp = class_import_get(obd->u.cli.cl_import);
2451 up_read(&obd->u.cli.cl_sem);
2455 /* We could possibly pass max_age in the request (as an absolute
2456 * timestamp or a "seconds.usec ago") so the target can avoid doing
2457 * extra calls into the filesystem if that isn't necessary (e.g.
2458 * during mount that would help a bit). Having relative timestamps
2459 * is not so great if request processing is slow, while absolute
2460 * timestamps are not ideal because they need time synchronization. */
2461 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
2463 class_import_put(imp);
2468 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2470 ptlrpc_request_free(req);
2473 ptlrpc_request_set_replen(req);
2474 req->rq_request_portal = OST_CREATE_PORTAL;
2475 ptlrpc_at_set_req_timeout(req);
2477 if (flags & OBD_STATFS_NODELAY) {
2478 /* procfs requests not want stat in wait for avoid deadlock */
2479 req->rq_no_resend = 1;
2480 req->rq_no_delay = 1;
2483 rc = ptlrpc_queue_wait(req);
2487 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2489 GOTO(out, rc = -EPROTO);
2496 ptlrpc_req_finished(req);
2500 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2501 void *karg, void *uarg)
2503 struct obd_device *obd = exp->exp_obd;
2504 struct obd_ioctl_data *data = karg;
2508 if (!try_module_get(THIS_MODULE)) {
2509 CERROR("%s: cannot get module '%s'\n", obd->obd_name,
2510 module_name(THIS_MODULE));
2514 case OBD_IOC_CLIENT_RECOVER:
2515 err = ptlrpc_recover_import(obd->u.cli.cl_import,
2516 data->ioc_inlbuf1, 0);
2520 case IOC_OSC_SET_ACTIVE:
2521 err = ptlrpc_set_import_active(obd->u.cli.cl_import,
2524 case OBD_IOC_POLL_QUOTACHECK:
2525 err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2527 case OBD_IOC_PING_TARGET:
2528 err = ptlrpc_obd_ping(obd);
2531 CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
2532 cmd, current_comm());
2533 GOTO(out, err = -ENOTTY);
2536 module_put(THIS_MODULE);
2540 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
2541 obd_count keylen, void *key, __u32 *vallen, void *val,
2542 struct lov_stripe_md *lsm)
2545 if (!vallen || !val)
2548 if (KEY_IS(KEY_FIEMAP)) {
2549 struct ll_fiemap_info_key *fm_key =
2550 (struct ll_fiemap_info_key *)key;
2551 struct ldlm_res_id res_id;
2552 ldlm_policy_data_t policy;
2553 struct lustre_handle lockh;
2554 ldlm_mode_t mode = 0;
2555 struct ptlrpc_request *req;
2556 struct ll_user_fiemap *reply;
2560 if (!(fm_key->fiemap.fm_flags & FIEMAP_FLAG_SYNC))
2563 policy.l_extent.start = fm_key->fiemap.fm_start &
2566 if (OBD_OBJECT_EOF - fm_key->fiemap.fm_length <=
2567 fm_key->fiemap.fm_start + PAGE_CACHE_SIZE - 1)
2568 policy.l_extent.end = OBD_OBJECT_EOF;
2570 policy.l_extent.end = (fm_key->fiemap.fm_start +
2571 fm_key->fiemap.fm_length +
2572 PAGE_CACHE_SIZE - 1) & CFS_PAGE_MASK;
2574 ostid_build_res_name(&fm_key->oa.o_oi, &res_id);
2575 mode = ldlm_lock_match(exp->exp_obd->obd_namespace,
2576 LDLM_FL_BLOCK_GRANTED |
2578 &res_id, LDLM_EXTENT, &policy,
2579 LCK_PR | LCK_PW, &lockh, 0);
2580 if (mode) { /* lock is cached on client */
2581 if (mode != LCK_PR) {
2582 ldlm_lock_addref(&lockh, LCK_PR);
2583 ldlm_lock_decref(&lockh, LCK_PW);
2585 } else { /* no cached lock, needs acquire lock on server side */
2586 fm_key->oa.o_valid |= OBD_MD_FLFLAGS;
2587 fm_key->oa.o_flags |= OBD_FL_SRVLOCK;
2591 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2592 &RQF_OST_GET_INFO_FIEMAP);
2594 GOTO(drop_lock, rc = -ENOMEM);
2596 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
2597 RCL_CLIENT, keylen);
2598 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
2599 RCL_CLIENT, *vallen);
2600 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
2601 RCL_SERVER, *vallen);
2603 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
2605 ptlrpc_request_free(req);
2606 GOTO(drop_lock, rc);
2609 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
2610 memcpy(tmp, key, keylen);
2611 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
2612 memcpy(tmp, val, *vallen);
2614 ptlrpc_request_set_replen(req);
2615 rc = ptlrpc_queue_wait(req);
2619 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
2621 GOTO(fini_req, rc = -EPROTO);
2623 memcpy(val, reply, *vallen);
2625 ptlrpc_req_finished(req);
2628 ldlm_lock_decref(&lockh, LCK_PR);
2635 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
2636 obd_count keylen, void *key, obd_count vallen,
2637 void *val, struct ptlrpc_request_set *set)
2639 struct ptlrpc_request *req;
2640 struct obd_device *obd = exp->exp_obd;
2641 struct obd_import *imp = class_exp2cliimp(exp);
2646 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
2648 if (KEY_IS(KEY_CHECKSUM)) {
2649 if (vallen != sizeof(int))
2651 exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
2655 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2656 sptlrpc_conf_client_adapt(obd);
2660 if (KEY_IS(KEY_FLUSH_CTX)) {
2661 sptlrpc_import_flush_my_ctx(imp);
2665 if (KEY_IS(KEY_CACHE_SET)) {
2666 struct client_obd *cli = &obd->u.cli;
2668 LASSERT(cli->cl_cache == NULL); /* only once */
2669 cli->cl_cache = (struct cl_client_cache *)val;
2670 atomic_inc(&cli->cl_cache->ccc_users);
2671 cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
2673 /* add this osc into entity list */
2674 LASSERT(list_empty(&cli->cl_lru_osc));
2675 spin_lock(&cli->cl_cache->ccc_lru_lock);
2676 list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
2677 spin_unlock(&cli->cl_cache->ccc_lru_lock);
2682 if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
2683 struct client_obd *cli = &obd->u.cli;
2684 long nr = atomic_long_read(&cli->cl_lru_in_list) >> 1;
2685 long target = *(long *)val;
2687 nr = osc_lru_shrink(env, cli, min(nr, target), true);
2692 if (!set && !KEY_IS(KEY_GRANT_SHRINK))
2695 /* We pass all other commands directly to OST. Since nobody calls osc
2696 methods directly and everybody is supposed to go through LOV, we
2697 assume lov checked invalid values for us.
2698 The only recognised values so far are evict_by_nid and mds_conn.
2699 Even if something bad goes through, we'd get a -EINVAL from OST
2702 req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
2703 &RQF_OST_SET_GRANT_INFO :
2708 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
2709 RCL_CLIENT, keylen);
2710 if (!KEY_IS(KEY_GRANT_SHRINK))
2711 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
2712 RCL_CLIENT, vallen);
2713 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
2715 ptlrpc_request_free(req);
2719 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
2720 memcpy(tmp, key, keylen);
2721 tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
2724 memcpy(tmp, val, vallen);
2726 if (KEY_IS(KEY_GRANT_SHRINK)) {
2727 struct osc_grant_args *aa;
2730 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2731 aa = ptlrpc_req_async_args(req);
2734 ptlrpc_req_finished(req);
2737 *oa = ((struct ost_body *)val)->oa;
2739 req->rq_interpret_reply = osc_shrink_grant_interpret;
2742 ptlrpc_request_set_replen(req);
2743 if (!KEY_IS(KEY_GRANT_SHRINK)) {
2744 LASSERT(set != NULL);
2745 ptlrpc_set_add_req(set, req);
2746 ptlrpc_check_set(NULL, set);
2748 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2753 static int osc_reconnect(const struct lu_env *env,
2754 struct obd_export *exp, struct obd_device *obd,
2755 struct obd_uuid *cluuid,
2756 struct obd_connect_data *data,
2759 struct client_obd *cli = &obd->u.cli;
2761 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
2764 client_obd_list_lock(&cli->cl_loi_list_lock);
2765 data->ocd_grant = (cli->cl_avail_grant +
2766 (cli->cl_dirty_pages << PAGE_CACHE_SHIFT)) ?:
2767 2 * cli_brw_size(obd);
2768 lost_grant = cli->cl_lost_grant;
2769 cli->cl_lost_grant = 0;
2770 client_obd_list_unlock(&cli->cl_loi_list_lock);
2772 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d"
2773 " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags,
2774 data->ocd_version, data->ocd_grant, lost_grant);
2780 static int osc_disconnect(struct obd_export *exp)
2782 struct obd_device *obd = class_exp2obd(exp);
2785 rc = client_disconnect_export(exp);
2787 * Initially we put del_shrink_grant before disconnect_export, but it
2788 * causes the following problem if setup (connect) and cleanup
2789 * (disconnect) are tangled together.
2790 * connect p1 disconnect p2
2791 * ptlrpc_connect_import
2792 * ............... class_manual_cleanup
2795 * ptlrpc_connect_interrupt
2797 * add this client to shrink list
2799 * Bang! pinger trigger the shrink.
2800 * So the osc should be disconnected from the shrink list, after we
2801 * are sure the import has been destroyed. BUG18662
2803 if (obd->u.cli.cl_import == NULL)
2804 osc_del_shrink_grant(&obd->u.cli);
2808 static int osc_import_event(struct obd_device *obd,
2809 struct obd_import *imp,
2810 enum obd_import_event event)
2812 struct client_obd *cli;
2816 LASSERT(imp->imp_obd == obd);
2819 case IMP_EVENT_DISCON: {
2821 client_obd_list_lock(&cli->cl_loi_list_lock);
2822 cli->cl_avail_grant = 0;
2823 cli->cl_lost_grant = 0;
2824 client_obd_list_unlock(&cli->cl_loi_list_lock);
2827 case IMP_EVENT_INACTIVE: {
2828 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
2831 case IMP_EVENT_INVALIDATE: {
2832 struct ldlm_namespace *ns = obd->obd_namespace;
2836 env = cl_env_get(&refcheck);
2840 /* all pages go to failing rpcs due to the invalid
2842 osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND);
2844 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2845 cl_env_put(env, &refcheck);
2850 case IMP_EVENT_ACTIVE: {
2851 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
2854 case IMP_EVENT_OCD: {
2855 struct obd_connect_data *ocd = &imp->imp_connect_data;
2857 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
2858 osc_init_grant(&obd->u.cli, ocd);
2861 if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
2862 imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL;
2864 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
2867 case IMP_EVENT_DEACTIVATE: {
2868 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
2871 case IMP_EVENT_ACTIVATE: {
2872 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
2876 CERROR("Unknown import event %d\n", event);
2883 * Determine whether the lock can be canceled before replaying the lock
2884 * during recovery, see bug16774 for detailed information.
2886 * \retval zero the lock can't be canceled
2887 * \retval other ok to cancel
2889 static int osc_cancel_weight(struct ldlm_lock *lock)
2892 * Cancel all unused and granted extent lock.
2894 if (lock->l_resource->lr_type == LDLM_EXTENT &&
2895 lock->l_granted_mode == lock->l_req_mode &&
2896 osc_ldlm_weigh_ast(lock) == 0)
2902 static int brw_queue_work(const struct lu_env *env, void *data)
2904 struct client_obd *cli = data;
2906 CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
2908 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
2912 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
2914 struct client_obd *cli = &obd->u.cli;
2915 struct obd_type *type;
2920 rc = ptlrpcd_addref();
2924 rc = client_obd_setup(obd, lcfg);
2926 GOTO(out_ptlrpcd, rc);
2928 handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
2929 if (IS_ERR(handler))
2930 GOTO(out_client_setup, rc = PTR_ERR(handler));
2931 cli->cl_writeback_work = handler;
2933 handler = ptlrpcd_alloc_work(cli->cl_import, lru_queue_work, cli);
2934 if (IS_ERR(handler))
2935 GOTO(out_ptlrpcd_work, rc = PTR_ERR(handler));
2936 cli->cl_lru_work = handler;
2938 rc = osc_quota_setup(obd);
2940 GOTO(out_ptlrpcd_work, rc);
2942 cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
2945 obd->obd_vars = lprocfs_osc_obd_vars;
2947 /* If this is true then both client (osc) and server (osp) are on the
2948 * same node. The osp layer if loaded first will register the osc proc
2949 * directory. In that case this obd_device will be attached its proc
2950 * tree to type->typ_procsym instead of obd->obd_type->typ_procroot. */
2951 type = class_search_type(LUSTRE_OSP_NAME);
2952 if (type && type->typ_procsym) {
2953 obd->obd_proc_entry = lprocfs_seq_register(obd->obd_name,
2955 obd->obd_vars, obd);
2956 if (IS_ERR(obd->obd_proc_entry)) {
2957 rc = PTR_ERR(obd->obd_proc_entry);
2958 CERROR("error %d setting up lprocfs for %s\n", rc,
2960 obd->obd_proc_entry = NULL;
2963 rc = lprocfs_obd_setup(obd);
2966 /* If the basic OSC proc tree construction succeeded then
2967 * lets do the rest. */
2969 lproc_osc_attach_seqstat(obd);
2970 sptlrpc_lprocfs_cliobd_attach(obd);
2971 ptlrpc_lprocfs_register_obd(obd);
2974 /* We need to allocate a few requests more, because
2975 * brw_interpret tries to create new requests before freeing
2976 * previous ones, Ideally we want to have 2x max_rpcs_in_flight
2977 * reserved, but I'm afraid that might be too much wasted RAM
2978 * in fact, so 2 is just my guess and still should work. */
2979 cli->cl_import->imp_rq_pool =
2980 ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2,
2982 ptlrpc_add_rqs_to_pool);
2984 INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
2985 ns_register_cancel(obd->obd_namespace, osc_cancel_weight);
2989 if (cli->cl_writeback_work != NULL) {
2990 ptlrpcd_destroy_work(cli->cl_writeback_work);
2991 cli->cl_writeback_work = NULL;
2993 if (cli->cl_lru_work != NULL) {
2994 ptlrpcd_destroy_work(cli->cl_lru_work);
2995 cli->cl_lru_work = NULL;
2998 client_obd_cleanup(obd);
3004 static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3010 case OBD_CLEANUP_EARLY: {
3011 struct obd_import *imp;
3012 imp = obd->u.cli.cl_import;
3013 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
3014 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
3015 ptlrpc_deactivate_import(imp);
3016 spin_lock(&imp->imp_lock);
3017 imp->imp_pingable = 0;
3018 spin_unlock(&imp->imp_lock);
3021 case OBD_CLEANUP_EXPORTS: {
3022 struct client_obd *cli = &obd->u.cli;
3024 * for echo client, export may be on zombie list, wait for
3025 * zombie thread to cull it, because cli.cl_import will be
3026 * cleared in client_disconnect_export():
3027 * class_export_destroy() -> obd_cleanup() ->
3028 * echo_device_free() -> echo_client_cleanup() ->
3029 * obd_disconnect() -> osc_disconnect() ->
3030 * client_disconnect_export()
3032 obd_zombie_barrier();
3033 if (cli->cl_writeback_work) {
3034 ptlrpcd_destroy_work(cli->cl_writeback_work);
3035 cli->cl_writeback_work = NULL;
3037 if (cli->cl_lru_work) {
3038 ptlrpcd_destroy_work(cli->cl_lru_work);
3039 cli->cl_lru_work = NULL;
3041 obd_cleanup_client_import(obd);
3042 ptlrpc_lprocfs_unregister_obd(obd);
3043 lprocfs_obd_cleanup(obd);
3050 int osc_cleanup(struct obd_device *obd)
3052 struct client_obd *cli = &obd->u.cli;
3058 if (cli->cl_cache != NULL) {
3059 LASSERT(atomic_read(&cli->cl_cache->ccc_users) > 0);
3060 spin_lock(&cli->cl_cache->ccc_lru_lock);
3061 list_del_init(&cli->cl_lru_osc);
3062 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3063 cli->cl_lru_left = NULL;
3064 atomic_dec(&cli->cl_cache->ccc_users);
3065 cli->cl_cache = NULL;
3068 /* free memory of osc quota cache */
3069 osc_quota_cleanup(obd);
3071 rc = client_obd_cleanup(obd);
3077 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
3079 int rc = class_process_proc_param(PARAM_OSC, obd->obd_vars, lcfg, obd);
3080 return rc > 0 ? 0: rc;
3083 static int osc_process_config(struct obd_device *obd, obd_count len, void *buf)
3085 return osc_process_config_base(obd, buf);
3088 struct obd_ops osc_obd_ops = {
3089 .o_owner = THIS_MODULE,
3090 .o_setup = osc_setup,
3091 .o_precleanup = osc_precleanup,
3092 .o_cleanup = osc_cleanup,
3093 .o_add_conn = client_import_add_conn,
3094 .o_del_conn = client_import_del_conn,
3095 .o_connect = client_connect_import,
3096 .o_reconnect = osc_reconnect,
3097 .o_disconnect = osc_disconnect,
3098 .o_statfs = osc_statfs,
3099 .o_statfs_async = osc_statfs_async,
3100 .o_create = osc_create,
3101 .o_destroy = osc_destroy,
3102 .o_getattr = osc_getattr,
3103 .o_getattr_async = osc_getattr_async,
3104 .o_setattr = osc_setattr,
3105 .o_setattr_async = osc_setattr_async,
3106 .o_change_cbdata = osc_change_cbdata,
3107 .o_find_cbdata = osc_find_cbdata,
3108 .o_iocontrol = osc_iocontrol,
3109 .o_get_info = osc_get_info,
3110 .o_set_info_async = osc_set_info_async,
3111 .o_import_event = osc_import_event,
3112 .o_process_config = osc_process_config,
3113 .o_quotactl = osc_quotactl,
3114 .o_quotacheck = osc_quotacheck,
3117 extern struct lu_kmem_descr osc_caches[];
3118 extern struct lock_class_key osc_ast_guard_class;
3120 int __init osc_init(void)
3122 bool enable_proc = true;
3123 struct obd_type *type;
3127 /* print an address of _any_ initialized kernel symbol from this
3128 * module, to allow debugging with gdb that doesn't support data
3129 * symbols from modules.*/
3130 CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
3132 rc = lu_kmem_init(osc_caches);
3136 type = class_search_type(LUSTRE_OSP_NAME);
3137 if (type != NULL && type->typ_procsym != NULL)
3138 enable_proc = false;
3140 rc = class_register_type(&osc_obd_ops, NULL, enable_proc, NULL,
3141 LUSTRE_OSC_NAME, &osc_device_type);
3143 lu_kmem_fini(osc_caches);
3150 static void /*__exit*/ osc_exit(void)
3152 class_unregister_type(LUSTRE_OSC_NAME);
3153 lu_kmem_fini(osc_caches);
3156 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3157 MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
3158 MODULE_LICENSE("GPL");
3160 cfs_module(osc, LUSTRE_VERSION_STRING, osc_init, osc_exit);