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, 2012, Whamcloud, Inc.
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>
42 # include <liblustre.h>
45 #include <lustre_dlm.h>
46 #include <lustre_net.h>
47 #include <lustre/lustre_user.h>
48 #include <obd_cksum.h>
56 #include <lustre_ha.h>
57 #include <lprocfs_status.h>
58 #include <lustre_log.h>
59 #include <lustre_debug.h>
60 #include <lustre_param.h>
61 #include "osc_internal.h"
62 #include "osc_cl_internal.h"
64 static void osc_release_ppga(struct brw_page **ppga, obd_count count);
65 static int brw_interpret(const struct lu_env *env,
66 struct ptlrpc_request *req, void *data, int rc);
67 int osc_cleanup(struct obd_device *obd);
69 /* Pack OSC object metadata for disk storage (LE byte order). */
70 static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
71 struct lov_stripe_md *lsm)
76 lmm_size = sizeof(**lmmp);
81 OBD_FREE(*lmmp, lmm_size);
87 OBD_ALLOC(*lmmp, lmm_size);
93 LASSERT(lsm->lsm_object_id);
94 LASSERT_SEQ_IS_MDT(lsm->lsm_object_seq);
95 (*lmmp)->lmm_object_id = cpu_to_le64(lsm->lsm_object_id);
96 (*lmmp)->lmm_object_seq = cpu_to_le64(lsm->lsm_object_seq);
102 /* Unpack OSC object metadata from disk storage (LE byte order). */
103 static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
104 struct lov_mds_md *lmm, int lmm_bytes)
107 struct obd_import *imp = class_exp2cliimp(exp);
111 if (lmm_bytes < sizeof (*lmm)) {
112 CERROR("lov_mds_md too small: %d, need %d\n",
113 lmm_bytes, (int)sizeof(*lmm));
116 /* XXX LOV_MAGIC etc check? */
118 if (lmm->lmm_object_id == 0) {
119 CERROR("lov_mds_md: zero lmm_object_id\n");
124 lsm_size = lov_stripe_md_size(1);
128 if (*lsmp != NULL && lmm == NULL) {
129 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
130 OBD_FREE(*lsmp, lsm_size);
136 OBD_ALLOC(*lsmp, lsm_size);
139 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
140 if ((*lsmp)->lsm_oinfo[0] == NULL) {
141 OBD_FREE(*lsmp, lsm_size);
144 loi_init((*lsmp)->lsm_oinfo[0]);
148 /* XXX zero *lsmp? */
149 (*lsmp)->lsm_object_id = le64_to_cpu (lmm->lmm_object_id);
150 (*lsmp)->lsm_object_seq = le64_to_cpu (lmm->lmm_object_seq);
151 LASSERT((*lsmp)->lsm_object_id);
152 LASSERT_SEQ_IS_MDT((*lsmp)->lsm_object_seq);
156 (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES))
157 (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes;
159 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
164 static inline void osc_pack_capa(struct ptlrpc_request *req,
165 struct ost_body *body, void *capa)
167 struct obd_capa *oc = (struct obd_capa *)capa;
168 struct lustre_capa *c;
173 c = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
176 body->oa.o_valid |= OBD_MD_FLOSSCAPA;
177 DEBUG_CAPA(D_SEC, c, "pack");
180 static inline void osc_pack_req_body(struct ptlrpc_request *req,
181 struct obd_info *oinfo)
183 struct ost_body *body;
185 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
188 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
189 osc_pack_capa(req, body, oinfo->oi_capa);
192 static inline void osc_set_capa_size(struct ptlrpc_request *req,
193 const struct req_msg_field *field,
197 req_capsule_set_size(&req->rq_pill, field, RCL_CLIENT, 0);
199 /* it is already calculated as sizeof struct obd_capa */
203 static int osc_getattr_interpret(const struct lu_env *env,
204 struct ptlrpc_request *req,
205 struct osc_async_args *aa, int rc)
207 struct ost_body *body;
213 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
215 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
216 lustre_get_wire_obdo(aa->aa_oi->oi_oa, &body->oa);
218 /* This should really be sent by the OST */
219 aa->aa_oi->oi_oa->o_blksize = PTLRPC_MAX_BRW_SIZE;
220 aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
222 CDEBUG(D_INFO, "can't unpack ost_body\n");
224 aa->aa_oi->oi_oa->o_valid = 0;
227 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
231 static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
232 struct ptlrpc_request_set *set)
234 struct ptlrpc_request *req;
235 struct osc_async_args *aa;
239 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
243 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
244 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
246 ptlrpc_request_free(req);
250 osc_pack_req_body(req, oinfo);
252 ptlrpc_request_set_replen(req);
253 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret;
255 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
256 aa = ptlrpc_req_async_args(req);
259 ptlrpc_set_add_req(set, req);
263 static int osc_getattr(const struct lu_env *env, struct obd_export *exp,
264 struct obd_info *oinfo)
266 struct ptlrpc_request *req;
267 struct ost_body *body;
271 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
275 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
276 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
278 ptlrpc_request_free(req);
282 osc_pack_req_body(req, oinfo);
284 ptlrpc_request_set_replen(req);
286 rc = ptlrpc_queue_wait(req);
290 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
292 GOTO(out, rc = -EPROTO);
294 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
295 lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
297 /* This should really be sent by the OST */
298 oinfo->oi_oa->o_blksize = PTLRPC_MAX_BRW_SIZE;
299 oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
303 ptlrpc_req_finished(req);
307 static int osc_setattr(const struct lu_env *env, struct obd_export *exp,
308 struct obd_info *oinfo, struct obd_trans_info *oti)
310 struct ptlrpc_request *req;
311 struct ost_body *body;
315 LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP);
317 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
321 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
322 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
324 ptlrpc_request_free(req);
328 osc_pack_req_body(req, oinfo);
330 ptlrpc_request_set_replen(req);
332 rc = ptlrpc_queue_wait(req);
336 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
338 GOTO(out, rc = -EPROTO);
340 lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
344 ptlrpc_req_finished(req);
348 static int osc_setattr_interpret(const struct lu_env *env,
349 struct ptlrpc_request *req,
350 struct osc_setattr_args *sa, int rc)
352 struct ost_body *body;
358 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
360 GOTO(out, rc = -EPROTO);
362 lustre_get_wire_obdo(sa->sa_oa, &body->oa);
364 rc = sa->sa_upcall(sa->sa_cookie, rc);
368 int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
369 struct obd_trans_info *oti,
370 obd_enqueue_update_f upcall, void *cookie,
371 struct ptlrpc_request_set *rqset)
373 struct ptlrpc_request *req;
374 struct osc_setattr_args *sa;
378 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
382 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
383 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
385 ptlrpc_request_free(req);
389 if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
390 oinfo->oi_oa->o_lcookie = *oti->oti_logcookies;
392 osc_pack_req_body(req, oinfo);
394 ptlrpc_request_set_replen(req);
396 /* do mds to ost setattr asynchronously */
398 /* Do not wait for response. */
399 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
401 req->rq_interpret_reply =
402 (ptlrpc_interpterer_t)osc_setattr_interpret;
404 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
405 sa = ptlrpc_req_async_args(req);
406 sa->sa_oa = oinfo->oi_oa;
407 sa->sa_upcall = upcall;
408 sa->sa_cookie = cookie;
410 if (rqset == PTLRPCD_SET)
411 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
413 ptlrpc_set_add_req(rqset, req);
419 static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
420 struct obd_trans_info *oti,
421 struct ptlrpc_request_set *rqset)
423 return osc_setattr_async_base(exp, oinfo, oti,
424 oinfo->oi_cb_up, oinfo, rqset);
427 int osc_real_create(struct obd_export *exp, struct obdo *oa,
428 struct lov_stripe_md **ea, struct obd_trans_info *oti)
430 struct ptlrpc_request *req;
431 struct ost_body *body;
432 struct lov_stripe_md *lsm;
441 rc = obd_alloc_memmd(exp, &lsm);
446 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE);
448 GOTO(out, rc = -ENOMEM);
450 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
452 ptlrpc_request_free(req);
456 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
458 lustre_set_wire_obdo(&body->oa, oa);
460 ptlrpc_request_set_replen(req);
462 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
463 oa->o_flags == OBD_FL_DELORPHAN) {
465 "delorphan from OST integration");
466 /* Don't resend the delorphan req */
467 req->rq_no_resend = req->rq_no_delay = 1;
470 rc = ptlrpc_queue_wait(req);
474 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
476 GOTO(out_req, rc = -EPROTO);
478 lustre_get_wire_obdo(oa, &body->oa);
480 /* This should really be sent by the OST */
481 oa->o_blksize = PTLRPC_MAX_BRW_SIZE;
482 oa->o_valid |= OBD_MD_FLBLKSZ;
484 /* XXX LOV STACKING: the lsm that is passed to us from LOV does not
485 * have valid lsm_oinfo data structs, so don't go touching that.
486 * This needs to be fixed in a big way.
488 lsm->lsm_object_id = oa->o_id;
489 lsm->lsm_object_seq = oa->o_seq;
493 oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
495 if (oa->o_valid & OBD_MD_FLCOOKIE) {
496 if (!oti->oti_logcookies)
497 oti_alloc_cookies(oti, 1);
498 *oti->oti_logcookies = oa->o_lcookie;
502 CDEBUG(D_HA, "transno: "LPD64"\n",
503 lustre_msg_get_transno(req->rq_repmsg));
505 ptlrpc_req_finished(req);
508 obd_free_memmd(exp, &lsm);
512 int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
513 obd_enqueue_update_f upcall, void *cookie,
514 struct ptlrpc_request_set *rqset)
516 struct ptlrpc_request *req;
517 struct osc_setattr_args *sa;
518 struct ost_body *body;
522 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH);
526 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
527 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH);
529 ptlrpc_request_free(req);
532 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
533 ptlrpc_at_set_req_timeout(req);
535 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
537 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
538 osc_pack_capa(req, body, oinfo->oi_capa);
540 ptlrpc_request_set_replen(req);
542 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret;
543 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
544 sa = ptlrpc_req_async_args(req);
545 sa->sa_oa = oinfo->oi_oa;
546 sa->sa_upcall = upcall;
547 sa->sa_cookie = cookie;
548 if (rqset == PTLRPCD_SET)
549 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
551 ptlrpc_set_add_req(rqset, req);
556 static int osc_punch(const struct lu_env *env, struct obd_export *exp,
557 struct obd_info *oinfo, struct obd_trans_info *oti,
558 struct ptlrpc_request_set *rqset)
560 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
561 oinfo->oi_oa->o_blocks = oinfo->oi_policy.l_extent.end;
562 oinfo->oi_oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
563 return osc_punch_base(exp, oinfo,
564 oinfo->oi_cb_up, oinfo, rqset);
567 static int osc_sync_interpret(const struct lu_env *env,
568 struct ptlrpc_request *req,
571 struct osc_fsync_args *fa = arg;
572 struct ost_body *body;
578 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
580 CERROR ("can't unpack ost_body\n");
581 GOTO(out, rc = -EPROTO);
584 *fa->fa_oi->oi_oa = body->oa;
586 rc = fa->fa_upcall(fa->fa_cookie, rc);
590 int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
591 obd_enqueue_update_f upcall, void *cookie,
592 struct ptlrpc_request_set *rqset)
594 struct ptlrpc_request *req;
595 struct ost_body *body;
596 struct osc_fsync_args *fa;
600 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC);
604 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
605 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC);
607 ptlrpc_request_free(req);
611 /* overload the size and blocks fields in the oa with start/end */
612 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
614 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
615 osc_pack_capa(req, body, oinfo->oi_capa);
617 ptlrpc_request_set_replen(req);
618 req->rq_interpret_reply = osc_sync_interpret;
620 CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args));
621 fa = ptlrpc_req_async_args(req);
623 fa->fa_upcall = upcall;
624 fa->fa_cookie = cookie;
626 if (rqset == PTLRPCD_SET)
627 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
629 ptlrpc_set_add_req(rqset, req);
634 static int osc_sync(const struct lu_env *env, struct obd_export *exp,
635 struct obd_info *oinfo, obd_size start, obd_size end,
636 struct ptlrpc_request_set *set)
641 CDEBUG(D_INFO, "oa NULL\n");
645 oinfo->oi_oa->o_size = start;
646 oinfo->oi_oa->o_blocks = end;
647 oinfo->oi_oa->o_valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
649 RETURN(osc_sync_base(exp, oinfo, oinfo->oi_cb_up, oinfo, set));
652 /* Find and cancel locally locks matched by @mode in the resource found by
653 * @objid. Found locks are added into @cancel list. Returns the amount of
654 * locks added to @cancels list. */
655 static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
657 ldlm_mode_t mode, int lock_flags)
659 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
660 struct ldlm_res_id res_id;
661 struct ldlm_resource *res;
665 osc_build_res_name(oa->o_id, oa->o_seq, &res_id);
666 res = ldlm_resource_get(ns, NULL, &res_id, 0, 0);
670 LDLM_RESOURCE_ADDREF(res);
671 count = ldlm_cancel_resource_local(res, cancels, NULL, mode,
672 lock_flags, 0, NULL);
673 LDLM_RESOURCE_DELREF(res);
674 ldlm_resource_putref(res);
678 static int osc_destroy_interpret(const struct lu_env *env,
679 struct ptlrpc_request *req, void *data,
682 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
684 cfs_atomic_dec(&cli->cl_destroy_in_flight);
685 cfs_waitq_signal(&cli->cl_destroy_waitq);
689 static int osc_can_send_destroy(struct client_obd *cli)
691 if (cfs_atomic_inc_return(&cli->cl_destroy_in_flight) <=
692 cli->cl_max_rpcs_in_flight) {
693 /* The destroy request can be sent */
696 if (cfs_atomic_dec_return(&cli->cl_destroy_in_flight) <
697 cli->cl_max_rpcs_in_flight) {
699 * The counter has been modified between the two atomic
702 cfs_waitq_signal(&cli->cl_destroy_waitq);
707 /* Destroy requests can be async always on the client, and we don't even really
708 * care about the return code since the client cannot do anything at all about
710 * When the MDS is unlinking a filename, it saves the file objects into a
711 * recovery llog, and these object records are cancelled when the OST reports
712 * they were destroyed and sync'd to disk (i.e. transaction committed).
713 * If the client dies, or the OST is down when the object should be destroyed,
714 * the records are not cancelled, and when the OST reconnects to the MDS next,
715 * it will retrieve the llog unlink logs and then sends the log cancellation
716 * cookies to the MDS after committing destroy transactions. */
717 static int osc_destroy(const struct lu_env *env, struct obd_export *exp,
718 struct obdo *oa, struct lov_stripe_md *ea,
719 struct obd_trans_info *oti, struct obd_export *md_export,
722 struct client_obd *cli = &exp->exp_obd->u.cli;
723 struct ptlrpc_request *req;
724 struct ost_body *body;
725 CFS_LIST_HEAD(cancels);
730 CDEBUG(D_INFO, "oa NULL\n");
734 count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW,
735 LDLM_FL_DISCARD_DATA);
737 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY);
739 ldlm_lock_list_put(&cancels, l_bl_ast, count);
743 osc_set_capa_size(req, &RMF_CAPA1, (struct obd_capa *)capa);
744 rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY,
747 ptlrpc_request_free(req);
751 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
752 ptlrpc_at_set_req_timeout(req);
754 if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
755 oa->o_lcookie = *oti->oti_logcookies;
756 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
758 lustre_set_wire_obdo(&body->oa, oa);
760 osc_pack_capa(req, body, (struct obd_capa *)capa);
761 ptlrpc_request_set_replen(req);
763 /* If osc_destory is for destroying the unlink orphan,
764 * sent from MDT to OST, which should not be blocked here,
765 * because the process might be triggered by ptlrpcd, and
766 * it is not good to block ptlrpcd thread (b=16006)*/
767 if (!(oa->o_flags & OBD_FL_DELORPHAN)) {
768 req->rq_interpret_reply = osc_destroy_interpret;
769 if (!osc_can_send_destroy(cli)) {
770 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP,
774 * Wait until the number of on-going destroy RPCs drops
775 * under max_rpc_in_flight
777 l_wait_event_exclusive(cli->cl_destroy_waitq,
778 osc_can_send_destroy(cli), &lwi);
782 /* Do not wait for response */
783 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
787 static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
790 obd_flag bits = OBD_MD_FLBLOCKS|OBD_MD_FLGRANT;
792 LASSERT(!(oa->o_valid & bits));
795 client_obd_list_lock(&cli->cl_loi_list_lock);
796 oa->o_dirty = cli->cl_dirty;
797 if (cli->cl_dirty - cli->cl_dirty_transit > cli->cl_dirty_max) {
798 CERROR("dirty %lu - %lu > dirty_max %lu\n",
799 cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max);
801 } else if (cfs_atomic_read(&obd_dirty_pages) -
802 cfs_atomic_read(&obd_dirty_transit_pages) >
803 obd_max_dirty_pages + 1){
804 /* The cfs_atomic_read() allowing the cfs_atomic_inc() are
805 * not covered by a lock thus they may safely race and trip
806 * this CERROR() unless we add in a small fudge factor (+1). */
807 CERROR("dirty %d - %d > system dirty_max %d\n",
808 cfs_atomic_read(&obd_dirty_pages),
809 cfs_atomic_read(&obd_dirty_transit_pages),
810 obd_max_dirty_pages);
812 } else if (cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff) {
813 CERROR("dirty %lu - dirty_max %lu too big???\n",
814 cli->cl_dirty, cli->cl_dirty_max);
817 long max_in_flight = (cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT)*
818 (cli->cl_max_rpcs_in_flight + 1);
819 oa->o_undirty = max(cli->cl_dirty_max, max_in_flight);
821 oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
822 oa->o_dropped = cli->cl_lost_grant;
823 cli->cl_lost_grant = 0;
824 client_obd_list_unlock(&cli->cl_loi_list_lock);
825 CDEBUG(D_CACHE,"dirty: "LPU64" undirty: %u dropped %u grant: "LPU64"\n",
826 oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
830 void osc_update_next_shrink(struct client_obd *cli)
832 cli->cl_next_shrink_grant =
833 cfs_time_shift(cli->cl_grant_shrink_interval);
834 CDEBUG(D_CACHE, "next time %ld to shrink grant \n",
835 cli->cl_next_shrink_grant);
838 static void __osc_update_grant(struct client_obd *cli, obd_size grant)
840 client_obd_list_lock(&cli->cl_loi_list_lock);
841 cli->cl_avail_grant += grant;
842 client_obd_list_unlock(&cli->cl_loi_list_lock);
845 static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
847 if (body->oa.o_valid & OBD_MD_FLGRANT) {
848 CDEBUG(D_CACHE, "got "LPU64" extra grant\n", body->oa.o_grant);
849 __osc_update_grant(cli, body->oa.o_grant);
853 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
854 obd_count keylen, void *key, obd_count vallen,
855 void *val, struct ptlrpc_request_set *set);
857 static int osc_shrink_grant_interpret(const struct lu_env *env,
858 struct ptlrpc_request *req,
861 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
862 struct obdo *oa = ((struct osc_grant_args *)aa)->aa_oa;
863 struct ost_body *body;
866 __osc_update_grant(cli, oa->o_grant);
870 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
872 osc_update_grant(cli, body);
878 static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
880 client_obd_list_lock(&cli->cl_loi_list_lock);
881 oa->o_grant = cli->cl_avail_grant / 4;
882 cli->cl_avail_grant -= oa->o_grant;
883 client_obd_list_unlock(&cli->cl_loi_list_lock);
884 if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
885 oa->o_valid |= OBD_MD_FLFLAGS;
888 oa->o_flags |= OBD_FL_SHRINK_GRANT;
889 osc_update_next_shrink(cli);
892 /* Shrink the current grant, either from some large amount to enough for a
893 * full set of in-flight RPCs, or if we have already shrunk to that limit
894 * then to enough for a single RPC. This avoids keeping more grant than
895 * needed, and avoids shrinking the grant piecemeal. */
896 static int osc_shrink_grant(struct client_obd *cli)
898 long target = (cli->cl_max_rpcs_in_flight + 1) *
899 cli->cl_max_pages_per_rpc;
901 client_obd_list_lock(&cli->cl_loi_list_lock);
902 if (cli->cl_avail_grant <= target)
903 target = cli->cl_max_pages_per_rpc;
904 client_obd_list_unlock(&cli->cl_loi_list_lock);
906 return osc_shrink_grant_to_target(cli, target);
909 int osc_shrink_grant_to_target(struct client_obd *cli, long target)
912 struct ost_body *body;
915 client_obd_list_lock(&cli->cl_loi_list_lock);
916 /* Don't shrink if we are already above or below the desired limit
917 * We don't want to shrink below a single RPC, as that will negatively
918 * impact block allocation and long-term performance. */
919 if (target < cli->cl_max_pages_per_rpc)
920 target = cli->cl_max_pages_per_rpc;
922 if (target >= cli->cl_avail_grant) {
923 client_obd_list_unlock(&cli->cl_loi_list_lock);
926 client_obd_list_unlock(&cli->cl_loi_list_lock);
932 osc_announce_cached(cli, &body->oa, 0);
934 client_obd_list_lock(&cli->cl_loi_list_lock);
935 body->oa.o_grant = cli->cl_avail_grant - target;
936 cli->cl_avail_grant = target;
937 client_obd_list_unlock(&cli->cl_loi_list_lock);
938 if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
939 body->oa.o_valid |= OBD_MD_FLFLAGS;
940 body->oa.o_flags = 0;
942 body->oa.o_flags |= OBD_FL_SHRINK_GRANT;
943 osc_update_next_shrink(cli);
945 rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export,
946 sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK,
947 sizeof(*body), body, NULL);
949 __osc_update_grant(cli, body->oa.o_grant);
954 #define GRANT_SHRINK_LIMIT PTLRPC_MAX_BRW_SIZE
955 static int osc_should_shrink_grant(struct client_obd *client)
957 cfs_time_t time = cfs_time_current();
958 cfs_time_t next_shrink = client->cl_next_shrink_grant;
960 if ((client->cl_import->imp_connect_data.ocd_connect_flags &
961 OBD_CONNECT_GRANT_SHRINK) == 0)
964 if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
965 if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
966 client->cl_avail_grant > GRANT_SHRINK_LIMIT)
969 osc_update_next_shrink(client);
974 static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data)
976 struct client_obd *client;
978 cfs_list_for_each_entry(client, &item->ti_obd_list,
979 cl_grant_shrink_list) {
980 if (osc_should_shrink_grant(client))
981 osc_shrink_grant(client);
986 static int osc_add_shrink_grant(struct client_obd *client)
990 rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval,
992 osc_grant_shrink_grant_cb, NULL,
993 &client->cl_grant_shrink_list);
995 CERROR("add grant client %s error %d\n",
996 client->cl_import->imp_obd->obd_name, rc);
999 CDEBUG(D_CACHE, "add grant client %s \n",
1000 client->cl_import->imp_obd->obd_name);
1001 osc_update_next_shrink(client);
1005 static int osc_del_shrink_grant(struct client_obd *client)
1007 return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list,
1011 static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
1014 * ocd_grant is the total grant amount we're expect to hold: if we've
1015 * been evicted, it's the new avail_grant amount, cl_dirty will drop
1016 * to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty.
1018 * race is tolerable here: if we're evicted, but imp_state already
1019 * left EVICTED state, then cl_dirty must be 0 already.
1021 client_obd_list_lock(&cli->cl_loi_list_lock);
1022 if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
1023 cli->cl_avail_grant = ocd->ocd_grant;
1025 cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty;
1027 if (cli->cl_avail_grant < 0) {
1028 CWARN("%s: available grant < 0, the OSS is probably not running"
1029 " with patch from bug20278 (%ld) \n",
1030 cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant);
1031 /* workaround for 1.6 servers which do not have
1032 * the patch from bug20278 */
1033 cli->cl_avail_grant = ocd->ocd_grant;
1036 /* determine the appropriate chunk size used by osc_extent. */
1037 cli->cl_chunkbits = max_t(int, CFS_PAGE_SHIFT, ocd->ocd_blocksize);
1038 client_obd_list_unlock(&cli->cl_loi_list_lock);
1040 CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld."
1041 "chunk bits: %d.\n", cli->cl_import->imp_obd->obd_name,
1042 cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits);
1044 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
1045 cfs_list_empty(&cli->cl_grant_shrink_list))
1046 osc_add_shrink_grant(cli);
1049 /* We assume that the reason this OSC got a short read is because it read
1050 * beyond the end of a stripe file; i.e. lustre is reading a sparse file
1051 * via the LOV, and it _knows_ it's reading inside the file, it's just that
1052 * this stripe never got written at or beyond this stripe offset yet. */
1053 static void handle_short_read(int nob_read, obd_count page_count,
1054 struct brw_page **pga)
1059 /* skip bytes read OK */
1060 while (nob_read > 0) {
1061 LASSERT (page_count > 0);
1063 if (pga[i]->count > nob_read) {
1064 /* EOF inside this page */
1065 ptr = cfs_kmap(pga[i]->pg) +
1066 (pga[i]->off & ~CFS_PAGE_MASK);
1067 memset(ptr + nob_read, 0, pga[i]->count - nob_read);
1068 cfs_kunmap(pga[i]->pg);
1074 nob_read -= pga[i]->count;
1079 /* zero remaining pages */
1080 while (page_count-- > 0) {
1081 ptr = cfs_kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
1082 memset(ptr, 0, pga[i]->count);
1083 cfs_kunmap(pga[i]->pg);
1088 static int check_write_rcs(struct ptlrpc_request *req,
1089 int requested_nob, int niocount,
1090 obd_count page_count, struct brw_page **pga)
1095 remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS,
1096 sizeof(*remote_rcs) *
1098 if (remote_rcs == NULL) {
1099 CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n");
1103 /* return error if any niobuf was in error */
1104 for (i = 0; i < niocount; i++) {
1105 if ((int)remote_rcs[i] < 0)
1106 return(remote_rcs[i]);
1108 if (remote_rcs[i] != 0) {
1109 CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n",
1110 i, remote_rcs[i], req);
1115 if (req->rq_bulk->bd_nob_transferred != requested_nob) {
1116 CERROR("Unexpected # bytes transferred: %d (requested %d)\n",
1117 req->rq_bulk->bd_nob_transferred, requested_nob);
1124 static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2)
1126 if (p1->flag != p2->flag) {
1127 unsigned mask = ~(OBD_BRW_FROM_GRANT| OBD_BRW_NOCACHE|
1128 OBD_BRW_SYNC|OBD_BRW_ASYNC|OBD_BRW_NOQUOTA);
1130 /* warn if we try to combine flags that we don't know to be
1131 * safe to combine */
1132 if (unlikely((p1->flag & mask) != (p2->flag & mask))) {
1133 CWARN("Saw flags 0x%x and 0x%x in the same brw, please "
1134 "report this at http://bugs.whamcloud.com/\n",
1135 p1->flag, p2->flag);
1140 return (p1->off + p1->count == p2->off);
1143 static obd_count osc_checksum_bulk(int nob, obd_count pg_count,
1144 struct brw_page **pga, int opc,
1145 cksum_type_t cksum_type)
1149 struct cfs_crypto_hash_desc *hdesc;
1150 unsigned int bufsize;
1152 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1154 LASSERT(pg_count > 0);
1156 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1157 if (IS_ERR(hdesc)) {
1158 CERROR("Unable to initialize checksum hash %s\n",
1159 cfs_crypto_hash_name(cfs_alg));
1160 return PTR_ERR(hdesc);
1163 while (nob > 0 && pg_count > 0) {
1164 int count = pga[i]->count > nob ? nob : pga[i]->count;
1166 /* corrupt the data before we compute the checksum, to
1167 * simulate an OST->client data error */
1168 if (i == 0 && opc == OST_READ &&
1169 OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
1170 unsigned char *ptr = cfs_kmap(pga[i]->pg);
1171 int off = pga[i]->off & ~CFS_PAGE_MASK;
1172 memcpy(ptr + off, "bad1", min(4, nob));
1173 cfs_kunmap(pga[i]->pg);
1175 cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
1176 pga[i]->off & ~CFS_PAGE_MASK,
1178 LL_CDEBUG_PAGE(D_PAGE, pga[i]->pg, "off %d checksum %x\n",
1179 (int)(pga[i]->off & ~CFS_PAGE_MASK), cksum);
1181 nob -= pga[i]->count;
1187 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1190 cfs_crypto_hash_final(hdesc, NULL, NULL);
1192 /* For sending we only compute the wrong checksum instead
1193 * of corrupting the data so it is still correct on a redo */
1194 if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND))
1200 static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
1201 struct lov_stripe_md *lsm, obd_count page_count,
1202 struct brw_page **pga,
1203 struct ptlrpc_request **reqp,
1204 struct obd_capa *ocapa, int reserve,
1207 struct ptlrpc_request *req;
1208 struct ptlrpc_bulk_desc *desc;
1209 struct ost_body *body;
1210 struct obd_ioobj *ioobj;
1211 struct niobuf_remote *niobuf;
1212 int niocount, i, requested_nob, opc, rc;
1213 struct osc_brw_async_args *aa;
1214 struct req_capsule *pill;
1215 struct brw_page *pg_prev;
1218 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ))
1219 RETURN(-ENOMEM); /* Recoverable */
1220 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2))
1221 RETURN(-EINVAL); /* Fatal */
1223 if ((cmd & OBD_BRW_WRITE) != 0) {
1225 req = ptlrpc_request_alloc_pool(cli->cl_import,
1226 cli->cl_import->imp_rq_pool,
1227 &RQF_OST_BRW_WRITE);
1230 req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ);
1235 for (niocount = i = 1; i < page_count; i++) {
1236 if (!can_merge_pages(pga[i - 1], pga[i]))
1240 pill = &req->rq_pill;
1241 req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT,
1243 req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT,
1244 niocount * sizeof(*niobuf));
1245 osc_set_capa_size(req, &RMF_CAPA1, ocapa);
1247 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc);
1249 ptlrpc_request_free(req);
1252 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
1253 ptlrpc_at_set_req_timeout(req);
1254 /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own
1256 req->rq_no_retry_einprogress = 1;
1258 if (opc == OST_WRITE)
1259 desc = ptlrpc_prep_bulk_imp(req, page_count,
1260 BULK_GET_SOURCE, OST_BULK_PORTAL);
1262 desc = ptlrpc_prep_bulk_imp(req, page_count,
1263 BULK_PUT_SINK, OST_BULK_PORTAL);
1266 GOTO(out, rc = -ENOMEM);
1267 /* NB request now owns desc and will free it when it gets freed */
1269 body = req_capsule_client_get(pill, &RMF_OST_BODY);
1270 ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
1271 niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
1272 LASSERT(body != NULL && ioobj != NULL && niobuf != NULL);
1274 lustre_set_wire_obdo(&body->oa, oa);
1276 obdo_to_ioobj(oa, ioobj);
1277 ioobj->ioo_bufcnt = niocount;
1278 osc_pack_capa(req, body, ocapa);
1279 LASSERT (page_count > 0);
1281 for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
1282 struct brw_page *pg = pga[i];
1283 int poff = pg->off & ~CFS_PAGE_MASK;
1285 LASSERT(pg->count > 0);
1286 /* make sure there is no gap in the middle of page array */
1287 LASSERTF(page_count == 1 ||
1288 (ergo(i == 0, poff + pg->count == CFS_PAGE_SIZE) &&
1289 ergo(i > 0 && i < page_count - 1,
1290 poff == 0 && pg->count == CFS_PAGE_SIZE) &&
1291 ergo(i == page_count - 1, poff == 0)),
1292 "i: %d/%d pg: %p off: "LPU64", count: %u\n",
1293 i, page_count, pg, pg->off, pg->count);
1295 LASSERTF(i == 0 || pg->off > pg_prev->off,
1296 "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64
1297 " prev_pg %p [pri %lu ind %lu] off "LPU64"\n",
1299 pg->pg, page_private(pg->pg), pg->pg->index, pg->off,
1300 pg_prev->pg, page_private(pg_prev->pg),
1301 pg_prev->pg->index, pg_prev->off);
1303 LASSERTF(i == 0 || pg->off > pg_prev->off,
1304 "i %d p_c %u\n", i, page_count);
1306 LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) ==
1307 (pg->flag & OBD_BRW_SRVLOCK));
1309 ptlrpc_prep_bulk_page(desc, pg->pg, poff, pg->count);
1310 requested_nob += pg->count;
1312 if (i > 0 && can_merge_pages(pg_prev, pg)) {
1314 niobuf->len += pg->count;
1316 niobuf->offset = pg->off;
1317 niobuf->len = pg->count;
1318 niobuf->flags = pg->flag;
1323 LASSERTF((void *)(niobuf - niocount) ==
1324 req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE),
1325 "want %p - real %p\n", req_capsule_client_get(&req->rq_pill,
1326 &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount));
1328 osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0);
1330 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1331 body->oa.o_valid |= OBD_MD_FLFLAGS;
1332 body->oa.o_flags = 0;
1334 body->oa.o_flags |= OBD_FL_RECOV_RESEND;
1337 if (osc_should_shrink_grant(cli))
1338 osc_shrink_grant_local(cli, &body->oa);
1340 /* size[REQ_REC_OFF] still sizeof (*body) */
1341 if (opc == OST_WRITE) {
1342 if (cli->cl_checksum &&
1343 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1344 /* store cl_cksum_type in a local variable since
1345 * it can be changed via lprocfs */
1346 cksum_type_t cksum_type = cli->cl_cksum_type;
1348 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1349 oa->o_flags &= OBD_FL_LOCAL_MASK;
1350 body->oa.o_flags = 0;
1352 body->oa.o_flags |= cksum_type_pack(cksum_type);
1353 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1354 body->oa.o_cksum = osc_checksum_bulk(requested_nob,
1358 CDEBUG(D_PAGE, "checksum at write origin: %x\n",
1360 /* save this in 'oa', too, for later checking */
1361 oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1362 oa->o_flags |= cksum_type_pack(cksum_type);
1364 /* clear out the checksum flag, in case this is a
1365 * resend but cl_checksum is no longer set. b=11238 */
1366 oa->o_valid &= ~OBD_MD_FLCKSUM;
1368 oa->o_cksum = body->oa.o_cksum;
1369 /* 1 RC per niobuf */
1370 req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
1371 sizeof(__u32) * niocount);
1373 if (cli->cl_checksum &&
1374 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1375 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
1376 body->oa.o_flags = 0;
1377 body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type);
1378 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1381 ptlrpc_request_set_replen(req);
1383 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1384 aa = ptlrpc_req_async_args(req);
1386 aa->aa_requested_nob = requested_nob;
1387 aa->aa_nio_count = niocount;
1388 aa->aa_page_count = page_count;
1392 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
1393 if (ocapa && reserve)
1394 aa->aa_ocapa = capa_get(ocapa);
1400 ptlrpc_req_finished(req);
1404 static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
1405 __u32 client_cksum, __u32 server_cksum, int nob,
1406 obd_count page_count, struct brw_page **pga,
1407 cksum_type_t client_cksum_type)
1411 cksum_type_t cksum_type;
1413 if (server_cksum == client_cksum) {
1414 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1418 cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1420 new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE,
1423 if (cksum_type != client_cksum_type)
1424 msg = "the server did not use the checksum type specified in "
1425 "the original request - likely a protocol problem";
1426 else if (new_cksum == server_cksum)
1427 msg = "changed on the client after we checksummed it - "
1428 "likely false positive due to mmap IO (bug 11742)";
1429 else if (new_cksum == client_cksum)
1430 msg = "changed in transit before arrival at OST";
1432 msg = "changed in transit AND doesn't match the original - "
1433 "likely false positive due to mmap IO (bug 11742)";
1435 LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
1436 " object "LPU64"/"LPU64" extent ["LPU64"-"LPU64"]\n",
1437 msg, libcfs_nid2str(peer->nid),
1438 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1439 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1440 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1442 oa->o_valid & OBD_MD_FLGROUP ? oa->o_seq : (__u64)0,
1444 pga[page_count-1]->off + pga[page_count-1]->count - 1);
1445 CERROR("original client csum %x (type %x), server csum %x (type %x), "
1446 "client csum now %x\n", client_cksum, client_cksum_type,
1447 server_cksum, cksum_type, new_cksum);
1451 /* Note rc enters this function as number of bytes transferred */
1452 static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
1454 struct osc_brw_async_args *aa = (void *)&req->rq_async_args;
1455 const lnet_process_id_t *peer =
1456 &req->rq_import->imp_connection->c_peer;
1457 struct client_obd *cli = aa->aa_cli;
1458 struct ost_body *body;
1459 __u32 client_cksum = 0;
1462 if (rc < 0 && rc != -EDQUOT) {
1463 DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc);
1467 LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc);
1468 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1470 DEBUG_REQ(D_INFO, req, "Can't unpack body\n");
1474 /* set/clear over quota flag for a uid/gid */
1475 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE &&
1476 body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) {
1477 unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid };
1479 CDEBUG(D_QUOTA, "setdq for [%u %u] with valid "LPX64", flags %x\n",
1480 body->oa.o_uid, body->oa.o_gid, body->oa.o_valid,
1482 osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags);
1485 osc_update_grant(cli, body);
1490 if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM)
1491 client_cksum = aa->aa_oa->o_cksum; /* save for later */
1493 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
1495 CERROR("Unexpected +ve rc %d\n", rc);
1498 LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob);
1500 if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk))
1503 if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum &&
1504 check_write_checksum(&body->oa, peer, client_cksum,
1505 body->oa.o_cksum, aa->aa_requested_nob,
1506 aa->aa_page_count, aa->aa_ppga,
1507 cksum_type_unpack(aa->aa_oa->o_flags)))
1510 rc = check_write_rcs(req, aa->aa_requested_nob,aa->aa_nio_count,
1511 aa->aa_page_count, aa->aa_ppga);
1515 /* The rest of this function executes only for OST_READs */
1517 /* if unwrap_bulk failed, return -EAGAIN to retry */
1518 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
1520 GOTO(out, rc = -EAGAIN);
1522 if (rc > aa->aa_requested_nob) {
1523 CERROR("Unexpected rc %d (%d requested)\n", rc,
1524 aa->aa_requested_nob);
1528 if (rc != req->rq_bulk->bd_nob_transferred) {
1529 CERROR ("Unexpected rc %d (%d transferred)\n",
1530 rc, req->rq_bulk->bd_nob_transferred);
1534 if (rc < aa->aa_requested_nob)
1535 handle_short_read(rc, aa->aa_page_count, aa->aa_ppga);
1537 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1538 static int cksum_counter;
1539 __u32 server_cksum = body->oa.o_cksum;
1542 cksum_type_t cksum_type;
1544 cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS?
1545 body->oa.o_flags : 0);
1546 client_cksum = osc_checksum_bulk(rc, aa->aa_page_count,
1547 aa->aa_ppga, OST_READ,
1550 if (peer->nid == req->rq_bulk->bd_sender) {
1554 router = libcfs_nid2str(req->rq_bulk->bd_sender);
1557 if (server_cksum == ~0 && rc > 0) {
1558 CERROR("Protocol error: server %s set the 'checksum' "
1559 "bit, but didn't send a checksum. Not fatal, "
1560 "but please notify on http://bugs.whamcloud.com/\n",
1561 libcfs_nid2str(peer->nid));
1562 } else if (server_cksum != client_cksum) {
1563 LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
1564 "%s%s%s inode "DFID" object "
1565 LPU64"/"LPU64" extent "
1566 "["LPU64"-"LPU64"]\n",
1567 req->rq_import->imp_obd->obd_name,
1568 libcfs_nid2str(peer->nid),
1570 body->oa.o_valid & OBD_MD_FLFID ?
1571 body->oa.o_parent_seq : (__u64)0,
1572 body->oa.o_valid & OBD_MD_FLFID ?
1573 body->oa.o_parent_oid : 0,
1574 body->oa.o_valid & OBD_MD_FLFID ?
1575 body->oa.o_parent_ver : 0,
1577 body->oa.o_valid & OBD_MD_FLGROUP ?
1578 body->oa.o_seq : (__u64)0,
1579 aa->aa_ppga[0]->off,
1580 aa->aa_ppga[aa->aa_page_count-1]->off +
1581 aa->aa_ppga[aa->aa_page_count-1]->count -
1583 CERROR("client %x, server %x, cksum_type %x\n",
1584 client_cksum, server_cksum, cksum_type);
1586 aa->aa_oa->o_cksum = client_cksum;
1590 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1593 } else if (unlikely(client_cksum)) {
1594 static int cksum_missed;
1597 if ((cksum_missed & (-cksum_missed)) == cksum_missed)
1598 CERROR("Checksum %u requested from %s but not sent\n",
1599 cksum_missed, libcfs_nid2str(peer->nid));
1605 lustre_get_wire_obdo(aa->aa_oa, &body->oa);
1610 static int osc_brw_internal(int cmd, struct obd_export *exp, struct obdo *oa,
1611 struct lov_stripe_md *lsm,
1612 obd_count page_count, struct brw_page **pga,
1613 struct obd_capa *ocapa)
1615 struct ptlrpc_request *req;
1618 int generation, resends = 0;
1619 struct l_wait_info lwi;
1623 cfs_waitq_init(&waitq);
1624 generation = exp->exp_obd->u.cli.cl_import->imp_generation;
1627 rc = osc_brw_prep_request(cmd, &exp->exp_obd->u.cli, oa, lsm,
1628 page_count, pga, &req, ocapa, 0, resends);
1633 req->rq_generation_set = 1;
1634 req->rq_import_generation = generation;
1635 req->rq_sent = cfs_time_current_sec() + resends;
1638 rc = ptlrpc_queue_wait(req);
1640 if (rc == -ETIMEDOUT && req->rq_resend) {
1641 DEBUG_REQ(D_HA, req, "BULK TIMEOUT");
1642 ptlrpc_req_finished(req);
1646 rc = osc_brw_fini_request(req, rc);
1648 ptlrpc_req_finished(req);
1649 /* When server return -EINPROGRESS, client should always retry
1650 * regardless of the number of times the bulk was resent already.*/
1651 if (osc_recoverable_error(rc)) {
1653 if (rc != -EINPROGRESS &&
1654 !client_should_resend(resends, &exp->exp_obd->u.cli)) {
1655 CERROR("%s: too many resend retries for object: "
1656 ""LPU64":"LPU64", rc = %d.\n",
1657 exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
1661 exp->exp_obd->u.cli.cl_import->imp_generation) {
1662 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1663 ""LPU64":"LPU64", rc = %d.\n",
1664 exp->exp_obd->obd_name, oa->o_id, oa->o_seq, rc);
1668 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1670 l_wait_event(waitq, 0, &lwi);
1675 if (rc == -EAGAIN || rc == -EINPROGRESS)
1680 int osc_brw_redo_request(struct ptlrpc_request *request,
1681 struct osc_brw_async_args *aa)
1683 struct ptlrpc_request *new_req;
1684 struct osc_brw_async_args *new_aa;
1685 struct osc_async_page *oap;
1689 DEBUG_REQ(D_ERROR, request, "redo for recoverable error");
1691 rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) ==
1692 OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ,
1693 aa->aa_cli, aa->aa_oa,
1694 NULL /* lsm unused by osc currently */,
1695 aa->aa_page_count, aa->aa_ppga,
1696 &new_req, aa->aa_ocapa, 0, 1);
1700 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1701 if (oap->oap_request != NULL) {
1702 LASSERTF(request == oap->oap_request,
1703 "request %p != oap_request %p\n",
1704 request, oap->oap_request);
1705 if (oap->oap_interrupted) {
1706 ptlrpc_req_finished(new_req);
1711 /* New request takes over pga and oaps from old request.
1712 * Note that copying a list_head doesn't work, need to move it... */
1714 new_req->rq_interpret_reply = request->rq_interpret_reply;
1715 new_req->rq_async_args = request->rq_async_args;
1716 new_req->rq_sent = cfs_time_current_sec() + aa->aa_resends;
1717 new_req->rq_generation_set = 1;
1718 new_req->rq_import_generation = request->rq_import_generation;
1720 new_aa = ptlrpc_req_async_args(new_req);
1722 CFS_INIT_LIST_HEAD(&new_aa->aa_oaps);
1723 cfs_list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
1724 CFS_INIT_LIST_HEAD(&new_aa->aa_exts);
1725 cfs_list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
1727 cfs_list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
1728 if (oap->oap_request) {
1729 ptlrpc_req_finished(oap->oap_request);
1730 oap->oap_request = ptlrpc_request_addref(new_req);
1734 new_aa->aa_ocapa = aa->aa_ocapa;
1735 aa->aa_ocapa = NULL;
1737 /* XXX: This code will run into problem if we're going to support
1738 * to add a series of BRW RPCs into a self-defined ptlrpc_request_set
1739 * and wait for all of them to be finished. We should inherit request
1740 * set from old request. */
1741 ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1);
1743 DEBUG_REQ(D_INFO, new_req, "new request");
1748 * ugh, we want disk allocation on the target to happen in offset order. we'll
1749 * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do
1750 * fine for our small page arrays and doesn't require allocation. its an
1751 * insertion sort that swaps elements that are strides apart, shrinking the
1752 * stride down until its '1' and the array is sorted.
1754 static void sort_brw_pages(struct brw_page **array, int num)
1757 struct brw_page *tmp;
1761 for (stride = 1; stride < num ; stride = (stride * 3) + 1)
1766 for (i = stride ; i < num ; i++) {
1769 while (j >= stride && array[j - stride]->off > tmp->off) {
1770 array[j] = array[j - stride];
1775 } while (stride > 1);
1778 static obd_count max_unfragmented_pages(struct brw_page **pg, obd_count pages)
1784 LASSERT (pages > 0);
1785 offset = pg[i]->off & ~CFS_PAGE_MASK;
1789 if (pages == 0) /* that's all */
1792 if (offset + pg[i]->count < CFS_PAGE_SIZE)
1793 return count; /* doesn't end on page boundary */
1796 offset = pg[i]->off & ~CFS_PAGE_MASK;
1797 if (offset != 0) /* doesn't start on page boundary */
1804 static struct brw_page **osc_build_ppga(struct brw_page *pga, obd_count count)
1806 struct brw_page **ppga;
1809 OBD_ALLOC(ppga, sizeof(*ppga) * count);
1813 for (i = 0; i < count; i++)
1818 static void osc_release_ppga(struct brw_page **ppga, obd_count count)
1820 LASSERT(ppga != NULL);
1821 OBD_FREE(ppga, sizeof(*ppga) * count);
1824 static int osc_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
1825 obd_count page_count, struct brw_page *pga,
1826 struct obd_trans_info *oti)
1828 struct obdo *saved_oa = NULL;
1829 struct brw_page **ppga, **orig;
1830 struct obd_import *imp = class_exp2cliimp(exp);
1831 struct client_obd *cli;
1832 int rc, page_count_orig;
1835 LASSERT((imp != NULL) && (imp->imp_obd != NULL));
1836 cli = &imp->imp_obd->u.cli;
1838 if (cmd & OBD_BRW_CHECK) {
1839 /* The caller just wants to know if there's a chance that this
1840 * I/O can succeed */
1842 if (imp->imp_invalid)
1847 /* test_brw with a failed create can trip this, maybe others. */
1848 LASSERT(cli->cl_max_pages_per_rpc);
1852 orig = ppga = osc_build_ppga(pga, page_count);
1855 page_count_orig = page_count;
1857 sort_brw_pages(ppga, page_count);
1858 while (page_count) {
1859 obd_count pages_per_brw;
1861 if (page_count > cli->cl_max_pages_per_rpc)
1862 pages_per_brw = cli->cl_max_pages_per_rpc;
1864 pages_per_brw = page_count;
1866 pages_per_brw = max_unfragmented_pages(ppga, pages_per_brw);
1868 if (saved_oa != NULL) {
1869 /* restore previously saved oa */
1870 *oinfo->oi_oa = *saved_oa;
1871 } else if (page_count > pages_per_brw) {
1872 /* save a copy of oa (brw will clobber it) */
1873 OBDO_ALLOC(saved_oa);
1874 if (saved_oa == NULL)
1875 GOTO(out, rc = -ENOMEM);
1876 *saved_oa = *oinfo->oi_oa;
1879 rc = osc_brw_internal(cmd, exp, oinfo->oi_oa, oinfo->oi_md,
1880 pages_per_brw, ppga, oinfo->oi_capa);
1885 page_count -= pages_per_brw;
1886 ppga += pages_per_brw;
1890 osc_release_ppga(orig, page_count_orig);
1892 if (saved_oa != NULL)
1893 OBDO_FREE(saved_oa);
1898 static int brw_interpret(const struct lu_env *env,
1899 struct ptlrpc_request *req, void *data, int rc)
1901 struct osc_brw_async_args *aa = data;
1902 struct osc_extent *ext;
1903 struct osc_extent *tmp;
1904 struct cl_object *obj = NULL;
1905 struct client_obd *cli = aa->aa_cli;
1908 rc = osc_brw_fini_request(req, rc);
1909 CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
1910 /* When server return -EINPROGRESS, client should always retry
1911 * regardless of the number of times the bulk was resent already. */
1912 if (osc_recoverable_error(rc)) {
1913 if (req->rq_import_generation !=
1914 req->rq_import->imp_generation) {
1915 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1916 ""LPU64":"LPU64", rc = %d.\n",
1917 req->rq_import->imp_obd->obd_name,
1918 aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
1919 } else if (rc == -EINPROGRESS ||
1920 client_should_resend(aa->aa_resends, aa->aa_cli)) {
1921 rc = osc_brw_redo_request(req, aa);
1923 CERROR("%s: too many resent retries for object: "
1924 ""LPU64":"LPU64", rc = %d.\n",
1925 req->rq_import->imp_obd->obd_name,
1926 aa->aa_oa->o_id, aa->aa_oa->o_seq, rc);
1931 else if (rc == -EAGAIN || rc == -EINPROGRESS)
1936 capa_put(aa->aa_ocapa);
1937 aa->aa_ocapa = NULL;
1940 cfs_list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
1941 if (obj == NULL && rc == 0) {
1942 obj = osc2cl(ext->oe_obj);
1946 cfs_list_del_init(&ext->oe_link);
1947 osc_extent_finish(env, ext, 1, rc);
1949 LASSERT(cfs_list_empty(&aa->aa_exts));
1950 LASSERT(cfs_list_empty(&aa->aa_oaps));
1953 struct obdo *oa = aa->aa_oa;
1954 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
1955 unsigned long valid = 0;
1958 if (oa->o_valid & OBD_MD_FLBLOCKS) {
1959 attr->cat_blocks = oa->o_blocks;
1960 valid |= CAT_BLOCKS;
1962 if (oa->o_valid & OBD_MD_FLMTIME) {
1963 attr->cat_mtime = oa->o_mtime;
1966 if (oa->o_valid & OBD_MD_FLATIME) {
1967 attr->cat_atime = oa->o_atime;
1970 if (oa->o_valid & OBD_MD_FLCTIME) {
1971 attr->cat_ctime = oa->o_ctime;
1975 cl_object_attr_lock(obj);
1976 cl_object_attr_set(env, obj, attr, valid);
1977 cl_object_attr_unlock(obj);
1979 cl_object_put(env, obj);
1981 OBDO_FREE(aa->aa_oa);
1983 cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
1984 req->rq_bulk->bd_nob_transferred);
1985 osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
1986 ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
1988 client_obd_list_lock(&cli->cl_loi_list_lock);
1989 /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
1990 * is called so we know whether to go to sync BRWs or wait for more
1991 * RPCs to complete */
1992 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE)
1993 cli->cl_w_in_flight--;
1995 cli->cl_r_in_flight--;
1996 osc_wake_cache_waiters(cli);
1997 client_obd_list_unlock(&cli->cl_loi_list_lock);
1999 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
2004 * Build an RPC by the list of extent @ext_list. The caller must ensure
2005 * that the total pages in this list are NOT over max pages per RPC.
2006 * Extents in the list must be in OES_RPC state.
2008 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
2009 cfs_list_t *ext_list, int cmd, pdl_policy_t pol)
2011 struct ptlrpc_request *req = NULL;
2012 struct osc_extent *ext;
2013 CFS_LIST_HEAD(rpc_list);
2014 struct brw_page **pga = NULL;
2015 struct osc_brw_async_args *aa = NULL;
2016 struct obdo *oa = NULL;
2017 struct osc_async_page *oap;
2018 struct osc_async_page *tmp;
2019 struct cl_req *clerq = NULL;
2020 enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE : CRT_READ;
2021 struct ldlm_lock *lock = NULL;
2022 struct cl_req_attr crattr;
2023 obd_off starting_offset = OBD_OBJECT_EOF;
2024 obd_off ending_offset = 0;
2025 int i, rc, mpflag = 0, mem_tight = 0, page_count = 0;
2028 LASSERT(!cfs_list_empty(ext_list));
2030 /* add pages into rpc_list to build BRW rpc */
2031 cfs_list_for_each_entry(ext, ext_list, oe_link) {
2032 LASSERT(ext->oe_state == OES_RPC);
2033 mem_tight |= ext->oe_memalloc;
2034 cfs_list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
2036 cfs_list_add_tail(&oap->oap_rpc_item, &rpc_list);
2037 if (starting_offset > oap->oap_obj_off)
2038 starting_offset = oap->oap_obj_off;
2040 LASSERT(oap->oap_page_off == 0);
2041 if (ending_offset < oap->oap_obj_off + oap->oap_count)
2042 ending_offset = oap->oap_obj_off +
2045 LASSERT(oap->oap_page_off + oap->oap_count ==
2051 mpflag = cfs_memory_pressure_get_and_set();
2053 memset(&crattr, 0, sizeof crattr);
2054 OBD_ALLOC(pga, sizeof(*pga) * page_count);
2056 GOTO(out, rc = -ENOMEM);
2060 GOTO(out, rc = -ENOMEM);
2063 cfs_list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
2064 struct cl_page *page = oap2cl_page(oap);
2065 if (clerq == NULL) {
2066 clerq = cl_req_alloc(env, page, crt,
2067 1 /* only 1-object rpcs for
2070 GOTO(out, rc = PTR_ERR(clerq));
2071 lock = oap->oap_ldlm_lock;
2074 oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
2075 pga[i] = &oap->oap_brw_page;
2076 pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
2077 CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
2078 pga[i]->pg, cfs_page_index(oap->oap_page), oap, pga[i]->flag);
2080 cl_req_page_add(env, clerq, page);
2083 /* always get the data for the obdo for the rpc */
2084 LASSERT(clerq != NULL);
2086 crattr.cra_capa = NULL;
2087 memset(crattr.cra_jobid, 0, JOBSTATS_JOBID_SIZE);
2088 cl_req_attr_set(env, clerq, &crattr, ~0ULL);
2090 oa->o_handle = lock->l_remote_handle;
2091 oa->o_valid |= OBD_MD_FLHANDLE;
2094 rc = cl_req_prep(env, clerq);
2096 CERROR("cl_req_prep failed: %d\n", rc);
2100 sort_brw_pages(pga, page_count);
2101 rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
2102 pga, &req, crattr.cra_capa, 1, 0);
2104 CERROR("prep_req failed: %d\n", rc);
2108 req->rq_interpret_reply = brw_interpret;
2110 req->rq_memalloc = 1;
2112 /* Need to update the timestamps after the request is built in case
2113 * we race with setattr (locally or in queue at OST). If OST gets
2114 * later setattr before earlier BRW (as determined by the request xid),
2115 * the OST will not use BRW timestamps. Sadly, there is no obvious
2116 * way to do this in a single call. bug 10150 */
2117 cl_req_attr_set(env, clerq, &crattr,
2118 OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
2120 lustre_msg_set_jobid(req->rq_reqmsg, crattr.cra_jobid);
2122 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2123 aa = ptlrpc_req_async_args(req);
2124 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
2125 cfs_list_splice_init(&rpc_list, &aa->aa_oaps);
2126 CFS_INIT_LIST_HEAD(&aa->aa_exts);
2127 cfs_list_splice_init(ext_list, &aa->aa_exts);
2128 aa->aa_clerq = clerq;
2130 /* queued sync pages can be torn down while the pages
2131 * were between the pending list and the rpc */
2133 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
2134 /* only one oap gets a request reference */
2137 if (oap->oap_interrupted && !req->rq_intr) {
2138 CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
2140 ptlrpc_mark_interrupted(req);
2144 tmp->oap_request = ptlrpc_request_addref(req);
2146 client_obd_list_lock(&cli->cl_loi_list_lock);
2147 starting_offset >>= CFS_PAGE_SHIFT;
2148 if (cmd == OBD_BRW_READ) {
2149 cli->cl_r_in_flight++;
2150 lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
2151 lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
2152 lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
2153 starting_offset + 1);
2155 cli->cl_w_in_flight++;
2156 lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
2157 lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
2158 lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
2159 starting_offset + 1);
2161 client_obd_list_unlock(&cli->cl_loi_list_lock);
2163 DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight",
2164 page_count, aa, cli->cl_r_in_flight,
2165 cli->cl_w_in_flight);
2167 /* XXX: Maybe the caller can check the RPC bulk descriptor to
2168 * see which CPU/NUMA node the majority of pages were allocated
2169 * on, and try to assign the async RPC to the CPU core
2170 * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic.
2172 * But on the other hand, we expect that multiple ptlrpcd
2173 * threads and the initial write sponsor can run in parallel,
2174 * especially when data checksum is enabled, which is CPU-bound
2175 * operation and single ptlrpcd thread cannot process in time.
2176 * So more ptlrpcd threads sharing BRW load
2177 * (with PDL_POLICY_ROUND) seems better.
2179 ptlrpcd_add_req(req, pol, -1);
2185 cfs_memory_pressure_restore(mpflag);
2187 capa_put(crattr.cra_capa);
2189 LASSERT(req == NULL);
2194 OBD_FREE(pga, sizeof(*pga) * page_count);
2195 /* this should happen rarely and is pretty bad, it makes the
2196 * pending list not follow the dirty order */
2197 while (!cfs_list_empty(ext_list)) {
2198 ext = cfs_list_entry(ext_list->next, struct osc_extent,
2200 cfs_list_del_init(&ext->oe_link);
2201 osc_extent_finish(env, ext, 0, rc);
2203 if (clerq && !IS_ERR(clerq))
2204 cl_req_completion(env, clerq, rc);
2209 static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
2210 struct ldlm_enqueue_info *einfo)
2212 void *data = einfo->ei_cbdata;
2215 LASSERT(lock != NULL);
2216 LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
2217 LASSERT(lock->l_resource->lr_type == einfo->ei_type);
2218 LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
2219 LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
2221 lock_res_and_lock(lock);
2222 cfs_spin_lock(&osc_ast_guard);
2224 if (lock->l_ast_data == NULL)
2225 lock->l_ast_data = data;
2226 if (lock->l_ast_data == data)
2229 cfs_spin_unlock(&osc_ast_guard);
2230 unlock_res_and_lock(lock);
2235 static int osc_set_data_with_check(struct lustre_handle *lockh,
2236 struct ldlm_enqueue_info *einfo)
2238 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
2242 set = osc_set_lock_data_with_check(lock, einfo);
2243 LDLM_LOCK_PUT(lock);
2245 CERROR("lockh %p, data %p - client evicted?\n",
2246 lockh, einfo->ei_cbdata);
2250 static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2251 ldlm_iterator_t replace, void *data)
2253 struct ldlm_res_id res_id;
2254 struct obd_device *obd = class_exp2obd(exp);
2256 osc_build_res_name(lsm->lsm_object_id, lsm->lsm_object_seq, &res_id);
2257 ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2261 /* find any ldlm lock of the inode in osc
2265 static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2266 ldlm_iterator_t replace, void *data)
2268 struct ldlm_res_id res_id;
2269 struct obd_device *obd = class_exp2obd(exp);
2272 osc_build_res_name(lsm->lsm_object_id, lsm->lsm_object_seq, &res_id);
2273 rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2274 if (rc == LDLM_ITER_STOP)
2276 if (rc == LDLM_ITER_CONTINUE)
2281 static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb,
2282 obd_enqueue_update_f upcall, void *cookie,
2283 int *flags, int agl, int rc)
2285 int intent = *flags & LDLM_FL_HAS_INTENT;
2289 /* The request was created before ldlm_cli_enqueue call. */
2290 if (rc == ELDLM_LOCK_ABORTED) {
2291 struct ldlm_reply *rep;
2292 rep = req_capsule_server_get(&req->rq_pill,
2295 LASSERT(rep != NULL);
2296 if (rep->lock_policy_res1)
2297 rc = rep->lock_policy_res1;
2301 if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) ||
2303 *flags |= LDLM_FL_LVB_READY;
2304 CDEBUG(D_INODE,"got kms "LPU64" blocks "LPU64" mtime "LPU64"\n",
2305 lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime);
2308 /* Call the update callback. */
2309 rc = (*upcall)(cookie, rc);
2313 static int osc_enqueue_interpret(const struct lu_env *env,
2314 struct ptlrpc_request *req,
2315 struct osc_enqueue_args *aa, int rc)
2317 struct ldlm_lock *lock;
2318 struct lustre_handle handle;
2320 struct ost_lvb *lvb;
2322 int *flags = aa->oa_flags;
2324 /* Make a local copy of a lock handle and a mode, because aa->oa_*
2325 * might be freed anytime after lock upcall has been called. */
2326 lustre_handle_copy(&handle, aa->oa_lockh);
2327 mode = aa->oa_ei->ei_mode;
2329 /* ldlm_cli_enqueue is holding a reference on the lock, so it must
2331 lock = ldlm_handle2lock(&handle);
2333 /* Take an additional reference so that a blocking AST that
2334 * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
2335 * to arrive after an upcall has been executed by
2336 * osc_enqueue_fini(). */
2337 ldlm_lock_addref(&handle, mode);
2339 /* Let CP AST to grant the lock first. */
2340 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
2342 if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) {
2347 lvb_len = sizeof(*aa->oa_lvb);
2350 /* Complete obtaining the lock procedure. */
2351 rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1,
2352 mode, flags, lvb, lvb_len, &handle, rc);
2353 /* Complete osc stuff. */
2354 rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie,
2355 flags, aa->oa_agl, rc);
2357 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
2359 /* Release the lock for async request. */
2360 if (lustre_handle_is_used(&handle) && rc == ELDLM_OK)
2362 * Releases a reference taken by ldlm_cli_enqueue(), if it is
2363 * not already released by
2364 * ldlm_cli_enqueue_fini()->failed_lock_cleanup()
2366 ldlm_lock_decref(&handle, mode);
2368 LASSERTF(lock != NULL, "lockh %p, req %p, aa %p - client evicted?\n",
2369 aa->oa_lockh, req, aa);
2370 ldlm_lock_decref(&handle, mode);
2371 LDLM_LOCK_PUT(lock);
2375 void osc_update_enqueue(struct lustre_handle *lov_lockhp,
2376 struct lov_oinfo *loi, int flags,
2377 struct ost_lvb *lvb, __u32 mode, int rc)
2379 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
2381 if (rc == ELDLM_OK) {
2384 LASSERT(lock != NULL);
2385 loi->loi_lvb = *lvb;
2386 tmp = loi->loi_lvb.lvb_size;
2387 /* Extend KMS up to the end of this lock and no further
2388 * A lock on [x,y] means a KMS of up to y + 1 bytes! */
2389 if (tmp > lock->l_policy_data.l_extent.end)
2390 tmp = lock->l_policy_data.l_extent.end + 1;
2391 if (tmp >= loi->loi_kms) {
2392 LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
2393 ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
2394 loi_kms_set(loi, tmp);
2396 LDLM_DEBUG(lock, "lock acquired, setting rss="
2397 LPU64"; leaving kms="LPU64", end="LPU64,
2398 loi->loi_lvb.lvb_size, loi->loi_kms,
2399 lock->l_policy_data.l_extent.end);
2401 ldlm_lock_allow_match(lock);
2402 } else if (rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT)) {
2403 LASSERT(lock != NULL);
2404 loi->loi_lvb = *lvb;
2405 ldlm_lock_allow_match(lock);
2406 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
2407 " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
2413 ldlm_lock_fail_match(lock);
2415 LDLM_LOCK_PUT(lock);
2418 EXPORT_SYMBOL(osc_update_enqueue);
2420 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
2422 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
2423 * from the 2nd OSC before a lock from the 1st one. This does not deadlock with
2424 * other synchronous requests, however keeping some locks and trying to obtain
2425 * others may take a considerable amount of time in a case of ost failure; and
2426 * when other sync requests do not get released lock from a client, the client
2427 * is excluded from the cluster -- such scenarious make the life difficult, so
2428 * release locks just after they are obtained. */
2429 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2430 int *flags, ldlm_policy_data_t *policy,
2431 struct ost_lvb *lvb, int kms_valid,
2432 obd_enqueue_update_f upcall, void *cookie,
2433 struct ldlm_enqueue_info *einfo,
2434 struct lustre_handle *lockh,
2435 struct ptlrpc_request_set *rqset, int async, int agl)
2437 struct obd_device *obd = exp->exp_obd;
2438 struct ptlrpc_request *req = NULL;
2439 int intent = *flags & LDLM_FL_HAS_INTENT;
2440 int match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
2445 /* Filesystem lock extents are extended to page boundaries so that
2446 * dealing with the page cache is a little smoother. */
2447 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2448 policy->l_extent.end |= ~CFS_PAGE_MASK;
2451 * kms is not valid when either object is completely fresh (so that no
2452 * locks are cached), or object was evicted. In the latter case cached
2453 * lock cannot be used, because it would prime inode state with
2454 * potentially stale LVB.
2459 /* Next, search for already existing extent locks that will cover us */
2460 /* If we're trying to read, we also search for an existing PW lock. The
2461 * VFS and page cache already protect us locally, so lots of readers/
2462 * writers can share a single PW lock.
2464 * There are problems with conversion deadlocks, so instead of
2465 * converting a read lock to a write lock, we'll just enqueue a new
2468 * At some point we should cancel the read lock instead of making them
2469 * send us a blocking callback, but there are problems with canceling
2470 * locks out from other users right now, too. */
2471 mode = einfo->ei_mode;
2472 if (einfo->ei_mode == LCK_PR)
2474 mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
2475 einfo->ei_type, policy, mode, lockh, 0);
2477 struct ldlm_lock *matched = ldlm_handle2lock(lockh);
2479 if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) {
2480 /* For AGL, if enqueue RPC is sent but the lock is not
2481 * granted, then skip to process this strpe.
2482 * Return -ECANCELED to tell the caller. */
2483 ldlm_lock_decref(lockh, mode);
2484 LDLM_LOCK_PUT(matched);
2486 } else if (osc_set_lock_data_with_check(matched, einfo)) {
2487 *flags |= LDLM_FL_LVB_READY;
2488 /* addref the lock only if not async requests and PW
2489 * lock is matched whereas we asked for PR. */
2490 if (!rqset && einfo->ei_mode != mode)
2491 ldlm_lock_addref(lockh, LCK_PR);
2493 /* I would like to be able to ASSERT here that
2494 * rss <= kms, but I can't, for reasons which
2495 * are explained in lov_enqueue() */
2498 /* We already have a lock, and it's referenced.
2500 * At this point, the cl_lock::cll_state is CLS_QUEUING,
2501 * AGL upcall may change it to CLS_HELD directly. */
2502 (*upcall)(cookie, ELDLM_OK);
2504 if (einfo->ei_mode != mode)
2505 ldlm_lock_decref(lockh, LCK_PW);
2507 /* For async requests, decref the lock. */
2508 ldlm_lock_decref(lockh, einfo->ei_mode);
2509 LDLM_LOCK_PUT(matched);
2512 ldlm_lock_decref(lockh, mode);
2513 LDLM_LOCK_PUT(matched);
2519 CFS_LIST_HEAD(cancels);
2520 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2521 &RQF_LDLM_ENQUEUE_LVB);
2525 rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
2527 ptlrpc_request_free(req);
2531 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
2533 ptlrpc_request_set_replen(req);
2536 /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
2537 *flags &= ~LDLM_FL_BLOCK_GRANTED;
2539 rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
2540 sizeof(*lvb), lockh, async);
2543 struct osc_enqueue_args *aa;
2544 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2545 aa = ptlrpc_req_async_args(req);
2548 aa->oa_flags = flags;
2549 aa->oa_upcall = upcall;
2550 aa->oa_cookie = cookie;
2552 aa->oa_lockh = lockh;
2555 req->rq_interpret_reply =
2556 (ptlrpc_interpterer_t)osc_enqueue_interpret;
2557 if (rqset == PTLRPCD_SET)
2558 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2560 ptlrpc_set_add_req(rqset, req);
2561 } else if (intent) {
2562 ptlrpc_req_finished(req);
2567 rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc);
2569 ptlrpc_req_finished(req);
2574 static int osc_enqueue(struct obd_export *exp, struct obd_info *oinfo,
2575 struct ldlm_enqueue_info *einfo,
2576 struct ptlrpc_request_set *rqset)
2578 struct ldlm_res_id res_id;
2582 osc_build_res_name(oinfo->oi_md->lsm_object_id,
2583 oinfo->oi_md->lsm_object_seq, &res_id);
2585 rc = osc_enqueue_base(exp, &res_id, &oinfo->oi_flags, &oinfo->oi_policy,
2586 &oinfo->oi_md->lsm_oinfo[0]->loi_lvb,
2587 oinfo->oi_md->lsm_oinfo[0]->loi_kms_valid,
2588 oinfo->oi_cb_up, oinfo, einfo, oinfo->oi_lockh,
2589 rqset, rqset != NULL, 0);
2593 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2594 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2595 int *flags, void *data, struct lustre_handle *lockh,
2598 struct obd_device *obd = exp->exp_obd;
2599 int lflags = *flags;
2603 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
2606 /* Filesystem lock extents are extended to page boundaries so that
2607 * dealing with the page cache is a little smoother */
2608 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2609 policy->l_extent.end |= ~CFS_PAGE_MASK;
2611 /* Next, search for already existing extent locks that will cover us */
2612 /* If we're trying to read, we also search for an existing PW lock. The
2613 * VFS and page cache already protect us locally, so lots of readers/
2614 * writers can share a single PW lock. */
2618 rc = ldlm_lock_match(obd->obd_namespace, lflags,
2619 res_id, type, policy, rc, lockh, unref);
2622 if (!osc_set_data_with_check(lockh, data)) {
2623 if (!(lflags & LDLM_FL_TEST_LOCK))
2624 ldlm_lock_decref(lockh, rc);
2628 if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
2629 ldlm_lock_addref(lockh, LCK_PR);
2630 ldlm_lock_decref(lockh, LCK_PW);
2637 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
2641 if (unlikely(mode == LCK_GROUP))
2642 ldlm_lock_decref_and_cancel(lockh, mode);
2644 ldlm_lock_decref(lockh, mode);
2649 static int osc_cancel(struct obd_export *exp, struct lov_stripe_md *md,
2650 __u32 mode, struct lustre_handle *lockh)
2653 RETURN(osc_cancel_base(lockh, mode));
2656 static int osc_cancel_unused(struct obd_export *exp,
2657 struct lov_stripe_md *lsm,
2658 ldlm_cancel_flags_t flags,
2661 struct obd_device *obd = class_exp2obd(exp);
2662 struct ldlm_res_id res_id, *resp = NULL;
2665 resp = osc_build_res_name(lsm->lsm_object_id,
2666 lsm->lsm_object_seq, &res_id);
2669 return ldlm_cli_cancel_unused(obd->obd_namespace, resp, flags, opaque);
2672 static int osc_statfs_interpret(const struct lu_env *env,
2673 struct ptlrpc_request *req,
2674 struct osc_async_args *aa, int rc)
2676 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
2677 struct obd_statfs *msfs;
2682 /* The request has in fact never been sent
2683 * due to issues at a higher level (LOV).
2684 * Exit immediately since the caller is
2685 * aware of the problem and takes care
2686 * of the clean up */
2689 if ((rc == -ENOTCONN || rc == -EAGAIN) &&
2690 (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
2696 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2698 GOTO(out, rc = -EPROTO);
2701 /* Reinitialize the RDONLY and DEGRADED flags at the client
2702 * on each statfs, so they don't stay set permanently. */
2703 cfs_spin_lock(&cli->cl_oscc.oscc_lock);
2705 if (unlikely(msfs->os_state & OS_STATE_DEGRADED))
2706 cli->cl_oscc.oscc_flags |= OSCC_FLAG_DEGRADED;
2707 else if (unlikely(cli->cl_oscc.oscc_flags & OSCC_FLAG_DEGRADED))
2708 cli->cl_oscc.oscc_flags &= ~OSCC_FLAG_DEGRADED;
2710 if (unlikely(msfs->os_state & OS_STATE_READONLY))
2711 cli->cl_oscc.oscc_flags |= OSCC_FLAG_RDONLY;
2712 else if (unlikely(cli->cl_oscc.oscc_flags & OSCC_FLAG_RDONLY))
2713 cli->cl_oscc.oscc_flags &= ~OSCC_FLAG_RDONLY;
2715 /* Add a bit of hysteresis so this flag isn't continually flapping,
2716 * and ensure that new files don't get extremely fragmented due to
2717 * only a small amount of available space in the filesystem.
2718 * We want to set the NOSPC flag when there is less than ~0.1% free
2719 * and clear it when there is at least ~0.2% free space, so:
2720 * avail < ~0.1% max max = avail + used
2721 * 1025 * avail < avail + used used = blocks - free
2722 * 1024 * avail < used
2723 * 1024 * avail < blocks - free
2724 * avail < ((blocks - free) >> 10)
2726 * On very large disk, say 16TB 0.1% will be 16 GB. We don't want to
2727 * lose that amount of space so in those cases we report no space left
2728 * if their is less than 1 GB left. */
2729 used = min_t(__u64,(msfs->os_blocks - msfs->os_bfree) >> 10, 1 << 30);
2730 if (unlikely(((cli->cl_oscc.oscc_flags & OSCC_FLAG_NOSPC) == 0) &&
2731 ((msfs->os_ffree < 32) || (msfs->os_bavail < used))))
2732 cli->cl_oscc.oscc_flags |= OSCC_FLAG_NOSPC;
2733 else if (unlikely(((cli->cl_oscc.oscc_flags & OSCC_FLAG_NOSPC) != 0) &&
2734 (msfs->os_ffree > 64) &&
2735 (msfs->os_bavail > (used << 1)))) {
2736 cli->cl_oscc.oscc_flags &= ~(OSCC_FLAG_NOSPC |
2737 OSCC_FLAG_NOSPC_BLK);
2740 if (unlikely(((cli->cl_oscc.oscc_flags & OSCC_FLAG_NOSPC) != 0) &&
2741 (msfs->os_bavail < used)))
2742 cli->cl_oscc.oscc_flags |= OSCC_FLAG_NOSPC_BLK;
2744 cfs_spin_unlock(&cli->cl_oscc.oscc_lock);
2746 *aa->aa_oi->oi_osfs = *msfs;
2748 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
2752 static int osc_statfs_async(struct obd_export *exp,
2753 struct obd_info *oinfo, __u64 max_age,
2754 struct ptlrpc_request_set *rqset)
2756 struct obd_device *obd = class_exp2obd(exp);
2757 struct ptlrpc_request *req;
2758 struct osc_async_args *aa;
2762 /* We could possibly pass max_age in the request (as an absolute
2763 * timestamp or a "seconds.usec ago") so the target can avoid doing
2764 * extra calls into the filesystem if that isn't necessary (e.g.
2765 * during mount that would help a bit). Having relative timestamps
2766 * is not so great if request processing is slow, while absolute
2767 * timestamps are not ideal because they need time synchronization. */
2768 req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
2772 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2774 ptlrpc_request_free(req);
2777 ptlrpc_request_set_replen(req);
2778 req->rq_request_portal = OST_CREATE_PORTAL;
2779 ptlrpc_at_set_req_timeout(req);
2781 if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
2782 /* procfs requests not want stat in wait for avoid deadlock */
2783 req->rq_no_resend = 1;
2784 req->rq_no_delay = 1;
2787 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
2788 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2789 aa = ptlrpc_req_async_args(req);
2792 ptlrpc_set_add_req(rqset, req);
2796 static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
2797 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
2799 struct obd_device *obd = class_exp2obd(exp);
2800 struct obd_statfs *msfs;
2801 struct ptlrpc_request *req;
2802 struct obd_import *imp = NULL;
2806 /*Since the request might also come from lprocfs, so we need
2807 *sync this with client_disconnect_export Bug15684*/
2808 cfs_down_read(&obd->u.cli.cl_sem);
2809 if (obd->u.cli.cl_import)
2810 imp = class_import_get(obd->u.cli.cl_import);
2811 cfs_up_read(&obd->u.cli.cl_sem);
2815 /* We could possibly pass max_age in the request (as an absolute
2816 * timestamp or a "seconds.usec ago") so the target can avoid doing
2817 * extra calls into the filesystem if that isn't necessary (e.g.
2818 * during mount that would help a bit). Having relative timestamps
2819 * is not so great if request processing is slow, while absolute
2820 * timestamps are not ideal because they need time synchronization. */
2821 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
2823 class_import_put(imp);
2828 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2830 ptlrpc_request_free(req);
2833 ptlrpc_request_set_replen(req);
2834 req->rq_request_portal = OST_CREATE_PORTAL;
2835 ptlrpc_at_set_req_timeout(req);
2837 if (flags & OBD_STATFS_NODELAY) {
2838 /* procfs requests not want stat in wait for avoid deadlock */
2839 req->rq_no_resend = 1;
2840 req->rq_no_delay = 1;
2843 rc = ptlrpc_queue_wait(req);
2847 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2849 GOTO(out, rc = -EPROTO);
2856 ptlrpc_req_finished(req);
2860 /* Retrieve object striping information.
2862 * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating
2863 * the maximum number of OST indices which will fit in the user buffer.
2864 * lmm_magic must be LOV_MAGIC (we only use 1 slot here).
2866 static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump)
2868 /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
2869 struct lov_user_md_v3 lum, *lumk;
2870 struct lov_user_ost_data_v1 *lmm_objects;
2871 int rc = 0, lum_size;
2877 /* we only need the header part from user space to get lmm_magic and
2878 * lmm_stripe_count, (the header part is common to v1 and v3) */
2879 lum_size = sizeof(struct lov_user_md_v1);
2880 if (cfs_copy_from_user(&lum, lump, lum_size))
2883 if ((lum.lmm_magic != LOV_USER_MAGIC_V1) &&
2884 (lum.lmm_magic != LOV_USER_MAGIC_V3))
2887 /* lov_user_md_vX and lov_mds_md_vX must have the same size */
2888 LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1));
2889 LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3));
2890 LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0]));
2892 /* we can use lov_mds_md_size() to compute lum_size
2893 * because lov_user_md_vX and lov_mds_md_vX have the same size */
2894 if (lum.lmm_stripe_count > 0) {
2895 lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic);
2896 OBD_ALLOC(lumk, lum_size);
2900 if (lum.lmm_magic == LOV_USER_MAGIC_V1)
2901 lmm_objects = &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]);
2903 lmm_objects = &(lumk->lmm_objects[0]);
2904 lmm_objects->l_object_id = lsm->lsm_object_id;
2906 lum_size = lov_mds_md_size(0, lum.lmm_magic);
2910 lumk->lmm_object_id = lsm->lsm_object_id;
2911 lumk->lmm_object_seq = lsm->lsm_object_seq;
2912 lumk->lmm_stripe_count = 1;
2914 if (cfs_copy_to_user(lump, lumk, lum_size))
2918 OBD_FREE(lumk, lum_size);
2924 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2925 void *karg, void *uarg)
2927 struct obd_device *obd = exp->exp_obd;
2928 struct obd_ioctl_data *data = karg;
2932 if (!cfs_try_module_get(THIS_MODULE)) {
2933 CERROR("Can't get module. Is it alive?");
2937 case OBD_IOC_LOV_GET_CONFIG: {
2939 struct lov_desc *desc;
2940 struct obd_uuid uuid;
2944 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
2945 GOTO(out, err = -EINVAL);
2947 data = (struct obd_ioctl_data *)buf;
2949 if (sizeof(*desc) > data->ioc_inllen1) {
2950 obd_ioctl_freedata(buf, len);
2951 GOTO(out, err = -EINVAL);
2954 if (data->ioc_inllen2 < sizeof(uuid)) {
2955 obd_ioctl_freedata(buf, len);
2956 GOTO(out, err = -EINVAL);
2959 desc = (struct lov_desc *)data->ioc_inlbuf1;
2960 desc->ld_tgt_count = 1;
2961 desc->ld_active_tgt_count = 1;
2962 desc->ld_default_stripe_count = 1;
2963 desc->ld_default_stripe_size = 0;
2964 desc->ld_default_stripe_offset = 0;
2965 desc->ld_pattern = 0;
2966 memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid));
2968 memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
2970 err = cfs_copy_to_user((void *)uarg, buf, len);
2973 obd_ioctl_freedata(buf, len);
2976 case LL_IOC_LOV_SETSTRIPE:
2977 err = obd_alloc_memmd(exp, karg);
2981 case LL_IOC_LOV_GETSTRIPE:
2982 err = osc_getstripe(karg, uarg);
2984 case OBD_IOC_CLIENT_RECOVER:
2985 err = ptlrpc_recover_import(obd->u.cli.cl_import,
2986 data->ioc_inlbuf1, 0);
2990 case IOC_OSC_SET_ACTIVE:
2991 err = ptlrpc_set_import_active(obd->u.cli.cl_import,
2994 case OBD_IOC_POLL_QUOTACHECK:
2995 err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2997 case OBD_IOC_PING_TARGET:
2998 err = ptlrpc_obd_ping(obd);
3001 CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
3002 cmd, cfs_curproc_comm());
3003 GOTO(out, err = -ENOTTY);
3006 cfs_module_put(THIS_MODULE);
3010 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
3011 obd_count keylen, void *key, __u32 *vallen, void *val,
3012 struct lov_stripe_md *lsm)
3015 if (!vallen || !val)
3018 if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
3019 __u32 *stripe = val;
3020 *vallen = sizeof(*stripe);
3023 } else if (KEY_IS(KEY_LAST_ID)) {
3024 struct ptlrpc_request *req;
3029 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3030 &RQF_OST_GET_INFO_LAST_ID);
3034 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3035 RCL_CLIENT, keylen);
3036 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3038 ptlrpc_request_free(req);
3042 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3043 memcpy(tmp, key, keylen);
3045 req->rq_no_delay = req->rq_no_resend = 1;
3046 ptlrpc_request_set_replen(req);
3047 rc = ptlrpc_queue_wait(req);
3051 reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID);
3053 GOTO(out, rc = -EPROTO);
3055 *((obd_id *)val) = *reply;
3057 ptlrpc_req_finished(req);
3059 } else if (KEY_IS(KEY_FIEMAP)) {
3060 struct ptlrpc_request *req;
3061 struct ll_user_fiemap *reply;
3065 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3066 &RQF_OST_GET_INFO_FIEMAP);
3070 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
3071 RCL_CLIENT, keylen);
3072 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3073 RCL_CLIENT, *vallen);
3074 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3075 RCL_SERVER, *vallen);
3077 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3079 ptlrpc_request_free(req);
3083 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
3084 memcpy(tmp, key, keylen);
3085 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3086 memcpy(tmp, val, *vallen);
3088 ptlrpc_request_set_replen(req);
3089 rc = ptlrpc_queue_wait(req);
3093 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3095 GOTO(out1, rc = -EPROTO);
3097 memcpy(val, reply, *vallen);
3099 ptlrpc_req_finished(req);
3107 static int osc_setinfo_mds_connect_import(struct obd_import *imp)
3109 struct llog_ctxt *ctxt;
3113 ctxt = llog_get_context(imp->imp_obd, LLOG_MDS_OST_ORIG_CTXT);
3115 rc = llog_initiator_connect(ctxt);
3116 llog_ctxt_put(ctxt);
3118 /* XXX return an error? skip setting below flags? */
3121 cfs_spin_lock(&imp->imp_lock);
3122 imp->imp_server_timeout = 1;
3123 imp->imp_pingable = 1;
3124 cfs_spin_unlock(&imp->imp_lock);
3125 CDEBUG(D_RPCTRACE, "pinging OST %s\n", obd2cli_tgt(imp->imp_obd));
3130 static int osc_setinfo_mds_conn_interpret(const struct lu_env *env,
3131 struct ptlrpc_request *req,
3138 RETURN(osc_setinfo_mds_connect_import(req->rq_import));
3141 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
3142 obd_count keylen, void *key, obd_count vallen,
3143 void *val, struct ptlrpc_request_set *set)
3145 struct ptlrpc_request *req;
3146 struct obd_device *obd = exp->exp_obd;
3147 struct obd_import *imp = class_exp2cliimp(exp);
3152 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
3154 if (KEY_IS(KEY_NEXT_ID)) {
3156 struct osc_creator *oscc = &obd->u.cli.cl_oscc;
3158 if (vallen != sizeof(obd_id))
3163 if (vallen != sizeof(obd_id))
3166 /* avoid race between allocate new object and set next id
3167 * from ll_sync thread */
3168 cfs_spin_lock(&oscc->oscc_lock);
3169 new_val = *((obd_id*)val) + 1;
3170 if (new_val > oscc->oscc_next_id)
3171 oscc->oscc_next_id = new_val;
3172 cfs_spin_unlock(&oscc->oscc_lock);
3173 CDEBUG(D_HA, "%s: set oscc_next_id = "LPU64"\n",
3174 exp->exp_obd->obd_name,
3175 obd->u.cli.cl_oscc.oscc_next_id);
3180 if (KEY_IS(KEY_CHECKSUM)) {
3181 if (vallen != sizeof(int))
3183 exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
3187 if (KEY_IS(KEY_SPTLRPC_CONF)) {
3188 sptlrpc_conf_client_adapt(obd);
3192 if (KEY_IS(KEY_FLUSH_CTX)) {
3193 sptlrpc_import_flush_my_ctx(imp);
3197 if (!set && !KEY_IS(KEY_GRANT_SHRINK))
3200 /* We pass all other commands directly to OST. Since nobody calls osc
3201 methods directly and everybody is supposed to go through LOV, we
3202 assume lov checked invalid values for us.
3203 The only recognised values so far are evict_by_nid and mds_conn.
3204 Even if something bad goes through, we'd get a -EINVAL from OST
3207 if (KEY_IS(KEY_GRANT_SHRINK))
3208 req = ptlrpc_request_alloc(imp, &RQF_OST_SET_GRANT_INFO);
3210 req = ptlrpc_request_alloc(imp, &RQF_OBD_SET_INFO);
3215 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3216 RCL_CLIENT, keylen);
3217 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
3218 RCL_CLIENT, vallen);
3219 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
3221 ptlrpc_request_free(req);
3225 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3226 memcpy(tmp, key, keylen);
3227 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
3228 memcpy(tmp, val, vallen);
3230 if (KEY_IS(KEY_MDS_CONN)) {
3231 struct osc_creator *oscc = &obd->u.cli.cl_oscc;
3233 oscc->oscc_oa.o_seq = (*(__u32 *)val);
3234 oscc->oscc_oa.o_valid |= OBD_MD_FLGROUP;
3235 LASSERT_SEQ_IS_MDT(oscc->oscc_oa.o_seq);
3236 req->rq_no_delay = req->rq_no_resend = 1;
3237 req->rq_interpret_reply = osc_setinfo_mds_conn_interpret;
3238 } else if (KEY_IS(KEY_GRANT_SHRINK)) {
3239 struct osc_grant_args *aa;
3242 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
3243 aa = ptlrpc_req_async_args(req);
3246 ptlrpc_req_finished(req);
3249 *oa = ((struct ost_body *)val)->oa;
3251 req->rq_interpret_reply = osc_shrink_grant_interpret;
3254 ptlrpc_request_set_replen(req);
3255 if (!KEY_IS(KEY_GRANT_SHRINK)) {
3256 LASSERT(set != NULL);
3257 ptlrpc_set_add_req(set, req);
3258 ptlrpc_check_set(NULL, set);
3260 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
3266 static struct llog_operations osc_size_repl_logops = {
3267 lop_cancel: llog_obd_repl_cancel
3270 static struct llog_operations osc_mds_ost_orig_logops;
3272 static int __osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3273 struct obd_device *tgt, struct llog_catid *catid)
3278 rc = llog_setup(obd, &obd->obd_olg, LLOG_MDS_OST_ORIG_CTXT, tgt, 1,
3279 &catid->lci_logid, &osc_mds_ost_orig_logops);
3281 CERROR("failed LLOG_MDS_OST_ORIG_CTXT\n");
3285 rc = llog_setup(obd, &obd->obd_olg, LLOG_SIZE_REPL_CTXT, tgt, 1,
3286 NULL, &osc_size_repl_logops);
3288 struct llog_ctxt *ctxt =
3289 llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
3292 CERROR("failed LLOG_SIZE_REPL_CTXT\n");
3297 CERROR("osc '%s' tgt '%s' catid %p rc=%d\n",
3298 obd->obd_name, tgt->obd_name, catid, rc);
3299 CERROR("logid "LPX64":0x%x\n",
3300 catid->lci_logid.lgl_oid, catid->lci_logid.lgl_ogen);
3305 static int osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3306 struct obd_device *disk_obd, int *index)
3308 struct llog_catid catid;
3309 static char name[32] = CATLIST;
3313 LASSERT(olg == &obd->obd_olg);
3315 cfs_mutex_lock(&olg->olg_cat_processing);
3316 rc = llog_get_cat_list(disk_obd, name, *index, 1, &catid);
3318 CERROR("rc: %d\n", rc);
3322 CDEBUG(D_INFO, "%s: Init llog for %d - catid "LPX64"/"LPX64":%x\n",
3323 obd->obd_name, *index, catid.lci_logid.lgl_oid,
3324 catid.lci_logid.lgl_oseq, catid.lci_logid.lgl_ogen);
3326 rc = __osc_llog_init(obd, olg, disk_obd, &catid);
3328 CERROR("rc: %d\n", rc);
3332 rc = llog_put_cat_list(disk_obd, name, *index, 1, &catid);
3334 CERROR("rc: %d\n", rc);
3339 cfs_mutex_unlock(&olg->olg_cat_processing);
3344 static int osc_llog_finish(struct obd_device *obd, int count)
3346 struct llog_ctxt *ctxt;
3347 int rc = 0, rc2 = 0;
3350 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
3352 rc = llog_cleanup(ctxt);
3354 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3356 rc2 = llog_cleanup(ctxt);
3363 static int osc_reconnect(const struct lu_env *env,
3364 struct obd_export *exp, struct obd_device *obd,
3365 struct obd_uuid *cluuid,
3366 struct obd_connect_data *data,
3369 struct client_obd *cli = &obd->u.cli;
3371 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
3374 client_obd_list_lock(&cli->cl_loi_list_lock);
3375 data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
3376 2 * cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
3377 lost_grant = cli->cl_lost_grant;
3378 cli->cl_lost_grant = 0;
3379 client_obd_list_unlock(&cli->cl_loi_list_lock);
3381 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d"
3382 " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags,
3383 data->ocd_version, data->ocd_grant, lost_grant);
3389 static int osc_disconnect(struct obd_export *exp)
3391 struct obd_device *obd = class_exp2obd(exp);
3392 struct llog_ctxt *ctxt;
3395 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3397 if (obd->u.cli.cl_conn_count == 1) {
3398 /* Flush any remaining cancel messages out to the
3400 llog_sync(ctxt, exp, 0);
3402 llog_ctxt_put(ctxt);
3404 CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n",
3408 rc = client_disconnect_export(exp);
3410 * Initially we put del_shrink_grant before disconnect_export, but it
3411 * causes the following problem if setup (connect) and cleanup
3412 * (disconnect) are tangled together.
3413 * connect p1 disconnect p2
3414 * ptlrpc_connect_import
3415 * ............... class_manual_cleanup
3418 * ptlrpc_connect_interrupt
3420 * add this client to shrink list
3422 * Bang! pinger trigger the shrink.
3423 * So the osc should be disconnected from the shrink list, after we
3424 * are sure the import has been destroyed. BUG18662
3426 if (obd->u.cli.cl_import == NULL)
3427 osc_del_shrink_grant(&obd->u.cli);
3431 static int osc_import_event(struct obd_device *obd,
3432 struct obd_import *imp,
3433 enum obd_import_event event)
3435 struct client_obd *cli;
3439 LASSERT(imp->imp_obd == obd);
3442 case IMP_EVENT_DISCON: {
3443 /* Only do this on the MDS OSC's */
3444 if (imp->imp_server_timeout) {
3445 struct osc_creator *oscc = &obd->u.cli.cl_oscc;
3447 cfs_spin_lock(&oscc->oscc_lock);
3448 oscc->oscc_flags |= OSCC_FLAG_RECOVERING;
3449 cfs_spin_unlock(&oscc->oscc_lock);
3452 client_obd_list_lock(&cli->cl_loi_list_lock);
3453 cli->cl_avail_grant = 0;
3454 cli->cl_lost_grant = 0;
3455 client_obd_list_unlock(&cli->cl_loi_list_lock);
3458 case IMP_EVENT_INACTIVE: {
3459 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
3462 case IMP_EVENT_INVALIDATE: {
3463 struct ldlm_namespace *ns = obd->obd_namespace;
3467 env = cl_env_get(&refcheck);
3471 /* all pages go to failing rpcs due to the invalid
3473 osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND);
3475 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
3476 cl_env_put(env, &refcheck);
3481 case IMP_EVENT_ACTIVE: {
3482 /* Only do this on the MDS OSC's */
3483 if (imp->imp_server_timeout) {
3484 struct osc_creator *oscc = &obd->u.cli.cl_oscc;
3486 cfs_spin_lock(&oscc->oscc_lock);
3487 oscc->oscc_flags &= ~(OSCC_FLAG_NOSPC |
3488 OSCC_FLAG_NOSPC_BLK);
3489 cfs_spin_unlock(&oscc->oscc_lock);
3491 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
3494 case IMP_EVENT_OCD: {
3495 struct obd_connect_data *ocd = &imp->imp_connect_data;
3497 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
3498 osc_init_grant(&obd->u.cli, ocd);
3501 if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
3502 imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL;
3504 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
3507 case IMP_EVENT_DEACTIVATE: {
3508 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
3511 case IMP_EVENT_ACTIVATE: {
3512 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
3516 CERROR("Unknown import event %d\n", event);
3523 * Determine whether the lock can be canceled before replaying the lock
3524 * during recovery, see bug16774 for detailed information.
3526 * \retval zero the lock can't be canceled
3527 * \retval other ok to cancel
3529 static int osc_cancel_for_recovery(struct ldlm_lock *lock)
3531 check_res_locked(lock->l_resource);
3534 * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
3536 * XXX as a future improvement, we can also cancel unused write lock
3537 * if it doesn't have dirty data and active mmaps.
3539 if (lock->l_resource->lr_type == LDLM_EXTENT &&
3540 (lock->l_granted_mode == LCK_PR ||
3541 lock->l_granted_mode == LCK_CR) &&
3542 (osc_dlm_lock_pageref(lock) == 0))
3548 static int brw_queue_work(const struct lu_env *env, void *data)
3550 struct client_obd *cli = data;
3552 CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
3554 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
3558 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
3560 struct lprocfs_static_vars lvars = { 0 };
3561 struct client_obd *cli = &obd->u.cli;
3566 rc = ptlrpcd_addref();
3570 rc = client_obd_setup(obd, lcfg);
3572 GOTO(out_ptlrpcd, rc);
3574 handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
3575 if (IS_ERR(handler))
3576 GOTO(out_client_setup, PTR_ERR(handler));
3577 cli->cl_writeback_work = handler;
3579 rc = osc_quota_setup(obd);
3581 GOTO(out_ptlrpcd_work, rc);
3583 cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
3584 lprocfs_osc_init_vars(&lvars);
3585 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
3586 lproc_osc_attach_seqstat(obd);
3587 sptlrpc_lprocfs_cliobd_attach(obd);
3588 ptlrpc_lprocfs_register_obd(obd);
3592 /* We need to allocate a few requests more, because
3593 * brw_interpret tries to create new requests before freeing
3594 * previous ones, Ideally we want to have 2x max_rpcs_in_flight
3595 * reserved, but I'm afraid that might be too much wasted RAM
3596 * in fact, so 2 is just my guess and still should work. */
3597 cli->cl_import->imp_rq_pool =
3598 ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2,
3600 ptlrpc_add_rqs_to_pool);
3602 CFS_INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
3603 ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
3607 ptlrpcd_destroy_work(handler);
3609 client_obd_cleanup(obd);
3615 static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3621 case OBD_CLEANUP_EARLY: {
3622 struct obd_import *imp;
3623 imp = obd->u.cli.cl_import;
3624 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
3625 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
3626 ptlrpc_deactivate_import(imp);
3627 cfs_spin_lock(&imp->imp_lock);
3628 imp->imp_pingable = 0;
3629 cfs_spin_unlock(&imp->imp_lock);
3632 case OBD_CLEANUP_EXPORTS: {
3633 struct client_obd *cli = &obd->u.cli;
3635 * for echo client, export may be on zombie list, wait for
3636 * zombie thread to cull it, because cli.cl_import will be
3637 * cleared in client_disconnect_export():
3638 * class_export_destroy() -> obd_cleanup() ->
3639 * echo_device_free() -> echo_client_cleanup() ->
3640 * obd_disconnect() -> osc_disconnect() ->
3641 * client_disconnect_export()
3643 obd_zombie_barrier();
3644 if (cli->cl_writeback_work) {
3645 ptlrpcd_destroy_work(cli->cl_writeback_work);
3646 cli->cl_writeback_work = NULL;
3648 obd_cleanup_client_import(obd);
3649 ptlrpc_lprocfs_unregister_obd(obd);
3650 lprocfs_obd_cleanup(obd);
3651 rc = obd_llog_finish(obd, 0);
3653 CERROR("failed to cleanup llogging subsystems\n");
3660 int osc_cleanup(struct obd_device *obd)
3666 /* free memory of osc quota cache */
3667 osc_quota_cleanup(obd);
3669 rc = client_obd_cleanup(obd);
3675 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
3677 struct lprocfs_static_vars lvars = { 0 };
3680 lprocfs_osc_init_vars(&lvars);
3682 switch (lcfg->lcfg_command) {
3684 rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
3694 static int osc_process_config(struct obd_device *obd, obd_count len, void *buf)
3696 return osc_process_config_base(obd, buf);
3699 struct obd_ops osc_obd_ops = {
3700 .o_owner = THIS_MODULE,
3701 .o_setup = osc_setup,
3702 .o_precleanup = osc_precleanup,
3703 .o_cleanup = osc_cleanup,
3704 .o_add_conn = client_import_add_conn,
3705 .o_del_conn = client_import_del_conn,
3706 .o_connect = client_connect_import,
3707 .o_reconnect = osc_reconnect,
3708 .o_disconnect = osc_disconnect,
3709 .o_statfs = osc_statfs,
3710 .o_statfs_async = osc_statfs_async,
3711 .o_packmd = osc_packmd,
3712 .o_unpackmd = osc_unpackmd,
3713 .o_precreate = osc_precreate,
3714 .o_create = osc_create,
3715 .o_create_async = osc_create_async,
3716 .o_destroy = osc_destroy,
3717 .o_getattr = osc_getattr,
3718 .o_getattr_async = osc_getattr_async,
3719 .o_setattr = osc_setattr,
3720 .o_setattr_async = osc_setattr_async,
3722 .o_punch = osc_punch,
3724 .o_enqueue = osc_enqueue,
3725 .o_change_cbdata = osc_change_cbdata,
3726 .o_find_cbdata = osc_find_cbdata,
3727 .o_cancel = osc_cancel,
3728 .o_cancel_unused = osc_cancel_unused,
3729 .o_iocontrol = osc_iocontrol,
3730 .o_get_info = osc_get_info,
3731 .o_set_info_async = osc_set_info_async,
3732 .o_import_event = osc_import_event,
3733 .o_llog_init = osc_llog_init,
3734 .o_llog_finish = osc_llog_finish,
3735 .o_process_config = osc_process_config,
3736 .o_quotactl = osc_quotactl,
3737 .o_quotacheck = osc_quotacheck,
3738 .o_quota_adjust_qunit = osc_quota_adjust_qunit,
3741 extern struct lu_kmem_descr osc_caches[];
3742 extern cfs_spinlock_t osc_ast_guard;
3743 extern cfs_lock_class_key_t osc_ast_guard_class;
3745 int __init osc_init(void)
3747 struct lprocfs_static_vars lvars = { 0 };
3751 /* print an address of _any_ initialized kernel symbol from this
3752 * module, to allow debugging with gdb that doesn't support data
3753 * symbols from modules.*/
3754 CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
3756 rc = lu_kmem_init(osc_caches);
3758 lprocfs_osc_init_vars(&lvars);
3760 rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars,
3761 LUSTRE_OSC_NAME, &osc_device_type);
3763 lu_kmem_fini(osc_caches);
3767 cfs_spin_lock_init(&osc_ast_guard);
3768 cfs_lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
3770 osc_mds_ost_orig_logops = llog_lvfs_ops;
3771 osc_mds_ost_orig_logops.lop_setup = llog_obd_origin_setup;
3772 osc_mds_ost_orig_logops.lop_cleanup = llog_obd_origin_cleanup;
3773 osc_mds_ost_orig_logops.lop_add = llog_obd_origin_add;
3774 osc_mds_ost_orig_logops.lop_connect = llog_origin_connect;
3780 static void /*__exit*/ osc_exit(void)
3782 class_unregister_type(LUSTRE_OSC_NAME);
3783 lu_kmem_fini(osc_caches);
3786 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3787 MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
3788 MODULE_LICENSE("GPL");
3790 cfs_module(osc, LUSTRE_VERSION_STRING, osc_init, osc_exit);
git://git.whamcloud.com / fs / lustre-release.git / blob