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) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_MDC
40 # include <linux/module.h>
41 # include <linux/pagemap.h>
42 # include <linux/miscdevice.h>
43 # include <linux/init.h>
44 # include <linux/utsname.h>
46 # include <liblustre.h>
49 #include <lustre_acl.h>
50 #include <lustre_ioctl.h>
51 #include <obd_class.h>
52 #include <lustre_lmv.h>
53 #include <lustre_fid.h>
54 #include <lprocfs_status.h>
55 #include <lustre_param.h>
56 #include <lustre_log.h>
57 #include <cl_object.h>
60 #include "mdc_internal.h"
62 #define REQUEST_MINOR 244
64 struct mdc_renew_capa_args {
65 struct obd_capa *ra_oc;
66 renew_capa_cb_t ra_cb;
69 static int mdc_cleanup(struct obd_device *obd);
71 int mdc_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req,
72 const struct req_msg_field *field, struct obd_capa **oc)
74 struct lustre_capa *capa;
78 /* swabbed already in mdc_enqueue */
79 capa = req_capsule_server_get(&req->rq_pill, field);
83 c = alloc_capa(CAPA_SITE_CLIENT);
85 CDEBUG(D_INFO, "alloc capa failed!\n");
94 static inline int mdc_queue_wait(struct ptlrpc_request *req)
96 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
99 /* obd_get_request_slot() ensures that this client has no more
100 * than cl_max_rpcs_in_flight RPCs simultaneously inf light
102 rc = obd_get_request_slot(cli);
106 rc = ptlrpc_queue_wait(req);
107 obd_put_request_slot(cli);
112 /* Helper that implements most of mdc_getstatus and signal_completed_replay. */
113 /* XXX this should become mdc_get_info("key"), sending MDS_GET_INFO RPC */
114 static int send_getstatus(struct obd_import *imp, struct lu_fid *rootfid,
115 struct obd_capa **pc, int level, int msg_flags)
117 struct ptlrpc_request *req;
118 struct mdt_body *body;
122 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_GETSTATUS,
123 LUSTRE_MDS_VERSION, MDS_GETSTATUS);
127 mdc_pack_body(req, NULL, NULL, 0, 0, -1, 0);
128 lustre_msg_add_flags(req->rq_reqmsg, msg_flags);
129 req->rq_send_state = level;
131 ptlrpc_request_set_replen(req);
133 rc = ptlrpc_queue_wait(req);
137 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
139 GOTO(out, rc = -EPROTO);
141 if (body->valid & OBD_MD_FLMDSCAPA) {
142 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, pc);
147 *rootfid = body->fid1;
149 "root fid="DFID", last_committed="LPU64"\n",
151 lustre_msg_get_last_committed(req->rq_repmsg));
154 ptlrpc_req_finished(req);
158 /* This should be mdc_get_info("rootfid") */
159 int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid,
160 struct obd_capa **pc)
162 return send_getstatus(class_exp2cliimp(exp), rootfid, pc,
167 * This function now is known to always saying that it will receive 4 buffers
168 * from server. Even for cases when acl_size and md_size is zero, RPC header
169 * will contain 4 fields and RPC itself will contain zero size fields. This is
170 * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
171 * and thus zero, it shrinks it, making zero size. The same story about
172 * md_size. And this is course of problem when client waits for smaller number
173 * of fields. This issue will be fixed later when client gets aware of RPC
176 static int mdc_getattr_common(struct obd_export *exp,
177 struct ptlrpc_request *req)
179 struct req_capsule *pill = &req->rq_pill;
180 struct mdt_body *body;
185 /* Request message already built. */
186 rc = ptlrpc_queue_wait(req);
190 /* sanity check for the reply */
191 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
195 CDEBUG(D_NET, "mode: %o\n", body->mode);
197 mdc_update_max_ea_from_body(exp, body);
198 if (body->eadatasize != 0) {
199 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
205 if (body->valid & OBD_MD_FLRMTPERM) {
206 struct mdt_remote_perm *perm;
208 LASSERT(client_is_remote(exp));
209 perm = req_capsule_server_swab_get(pill, &RMF_ACL,
210 lustre_swab_mdt_remote_perm);
215 if (body->valid & OBD_MD_FLMDSCAPA) {
216 struct lustre_capa *capa;
217 capa = req_capsule_server_get(pill, &RMF_CAPA1);
225 int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
226 struct ptlrpc_request **request)
228 struct ptlrpc_request *req;
232 /* Single MDS without an LMV case */
233 if (op_data->op_flags & MF_GET_MDT_IDX) {
238 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
242 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
244 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
246 ptlrpc_request_free(req);
250 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
251 op_data->op_valid, op_data->op_mode, -1, 0);
253 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
255 if (op_data->op_valid & OBD_MD_FLRMTPERM) {
256 LASSERT(client_is_remote(exp));
257 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
258 sizeof(struct mdt_remote_perm));
260 ptlrpc_request_set_replen(req);
262 rc = mdc_getattr_common(exp, req);
264 ptlrpc_req_finished(req);
270 int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
271 struct ptlrpc_request **request)
273 struct ptlrpc_request *req;
278 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
279 &RQF_MDS_GETATTR_NAME);
283 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
284 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
285 op_data->op_namelen + 1);
287 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
289 ptlrpc_request_free(req);
293 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
294 op_data->op_valid, op_data->op_mode,
295 op_data->op_suppgids[0], 0);
297 if (op_data->op_name) {
298 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
299 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
300 op_data->op_namelen);
301 memcpy(name, op_data->op_name, op_data->op_namelen);
304 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
306 ptlrpc_request_set_replen(req);
308 rc = mdc_getattr_common(exp, req);
310 ptlrpc_req_finished(req);
316 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
317 const struct lu_fid *fid,
318 struct obd_capa *oc, int opcode, obd_valid valid,
319 const char *xattr_name, const char *input,
320 int input_size, int output_size, int flags,
321 __u32 suppgid, struct ptlrpc_request **request)
323 struct ptlrpc_request *req;
324 int xattr_namelen = 0;
330 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
334 mdc_set_capa_size(req, &RMF_CAPA1, oc);
336 xattr_namelen = strlen(xattr_name) + 1;
337 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
342 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
346 /* Flush local XATTR locks to get rid of a possible cancel RPC */
347 if (opcode == MDS_REINT && fid_is_sane(fid) &&
348 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
349 struct list_head cancels = LIST_HEAD_INIT(cancels);
352 /* Without that packing would fail */
354 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
357 count = mdc_resource_get_unused(exp, fid,
359 MDS_INODELOCK_XATTR);
361 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
363 ptlrpc_request_free(req);
367 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
369 ptlrpc_request_free(req);
374 if (opcode == MDS_REINT) {
375 struct mdt_rec_setxattr *rec;
377 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
378 sizeof(struct mdt_rec_reint));
379 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
380 rec->sx_opcode = REINT_SETXATTR;
381 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
382 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
383 rec->sx_cap = cfs_curproc_cap_pack();
384 rec->sx_suppgid1 = suppgid;
385 rec->sx_suppgid2 = -1;
387 rec->sx_valid = valid | OBD_MD_FLCTIME;
388 rec->sx_time = cfs_time_current_sec();
389 rec->sx_size = output_size;
390 rec->sx_flags = flags;
392 mdc_pack_capa(req, &RMF_CAPA1, oc);
394 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
398 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
399 memcpy(tmp, xattr_name, xattr_namelen);
402 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
403 memcpy(tmp, input, input_size);
406 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
407 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
408 RCL_SERVER, output_size);
409 ptlrpc_request_set_replen(req);
412 if (opcode == MDS_REINT)
413 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
415 rc = ptlrpc_queue_wait(req);
417 if (opcode == MDS_REINT)
418 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
421 ptlrpc_req_finished(req);
427 int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
428 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
429 const char *input, int input_size, int output_size,
430 int flags, __u32 suppgid, struct ptlrpc_request **request)
432 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
433 fid, oc, MDS_REINT, valid, xattr_name,
434 input, input_size, output_size, flags,
438 int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
439 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
440 const char *input, int input_size, int output_size,
441 int flags, struct ptlrpc_request **request)
443 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
444 fid, oc, MDS_GETXATTR, valid, xattr_name,
445 input, input_size, output_size, flags,
449 #ifdef CONFIG_FS_POSIX_ACL
450 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
452 struct req_capsule *pill = &req->rq_pill;
453 struct mdt_body *body = md->body;
454 struct posix_acl *acl;
462 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize);
467 acl = posix_acl_from_xattr(&init_user_ns, buf, body->aclsize);
470 CERROR("convert xattr to acl: %d\n", rc);
474 rc = posix_acl_valid(acl);
476 CERROR("validate acl: %d\n", rc);
477 posix_acl_release(acl);
485 #define mdc_unpack_acl(req, md) 0
488 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
489 struct obd_export *dt_exp, struct obd_export *md_exp,
490 struct lustre_md *md)
492 struct req_capsule *pill = &req->rq_pill;
497 memset(md, 0, sizeof(*md));
499 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
500 LASSERT(md->body != NULL);
502 if (md->body->valid & OBD_MD_FLEASIZE) {
504 struct lov_mds_md *lmm;
506 if (!S_ISREG(md->body->mode)) {
507 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
508 "regular file, but is not\n");
509 GOTO(out, rc = -EPROTO);
512 if (md->body->eadatasize == 0) {
513 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
514 "but eadatasize 0\n");
515 GOTO(out, rc = -EPROTO);
517 lmmsize = md->body->eadatasize;
518 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
520 GOTO(out, rc = -EPROTO);
522 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
526 if (rc < sizeof(*md->lsm)) {
527 CDEBUG(D_INFO, "lsm size too small: "
528 "rc < sizeof (*md->lsm) (%d < %d)\n",
529 rc, (int)sizeof(*md->lsm));
530 GOTO(out, rc = -EPROTO);
533 } else if (md->body->valid & OBD_MD_FLDIREA) {
535 struct lov_mds_md *lmv;
537 if(!S_ISDIR(md->body->mode)) {
538 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
539 "directory, but is not\n");
540 GOTO(out, rc = -EPROTO);
543 if (md->body->eadatasize == 0) {
544 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
545 "but eadatasize 0\n");
548 if (md->body->valid & OBD_MD_MEA) {
549 lmvsize = md->body->eadatasize;
550 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
553 GOTO(out, rc = -EPROTO);
555 rc = obd_unpackmd(md_exp, (void *)&md->lmv, lmv,
560 if (rc < sizeof(*md->lmv)) {
561 CDEBUG(D_INFO, "size too small: "
562 "rc < sizeof(*md->lmv) (%d < %d)\n",
563 rc, (int)sizeof(*md->lmv));
564 GOTO(out, rc = -EPROTO);
570 if (md->body->valid & OBD_MD_FLRMTPERM) {
571 /* remote permission */
572 LASSERT(client_is_remote(exp));
573 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
574 lustre_swab_mdt_remote_perm);
575 if (!md->remote_perm)
576 GOTO(out, rc = -EPROTO);
578 else if (md->body->valid & OBD_MD_FLACL) {
579 /* for ACL, it's possible that FLACL is set but aclsize is zero.
580 * only when aclsize != 0 there's an actual segment for ACL
583 if (md->body->aclsize) {
584 rc = mdc_unpack_acl(req, md);
587 #ifdef CONFIG_FS_POSIX_ACL
589 md->posix_acl = NULL;
593 if (md->body->valid & OBD_MD_FLMDSCAPA) {
594 struct obd_capa *oc = NULL;
596 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc);
602 if (md->body->valid & OBD_MD_FLOSSCAPA) {
603 struct obd_capa *oc = NULL;
605 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc);
615 capa_put(md->oss_capa);
619 capa_put(md->mds_capa);
622 #ifdef CONFIG_FS_POSIX_ACL
623 posix_acl_release(md->posix_acl);
626 obd_free_memmd(dt_exp, &md->lsm);
631 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
638 * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING
641 void mdc_replay_open(struct ptlrpc_request *req)
643 struct md_open_data *mod = req->rq_cb_data;
644 struct ptlrpc_request *close_req;
645 struct obd_client_handle *och;
646 struct lustre_handle old;
647 struct mdt_body *body;
651 DEBUG_REQ(D_ERROR, req,
652 "Can't properly replay without open data.");
657 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
658 LASSERT(body != NULL);
662 struct lustre_handle *file_fh;
664 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
666 file_fh = &och->och_fh;
667 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
668 file_fh->cookie, body->handle.cookie);
670 *file_fh = body->handle;
672 close_req = mod->mod_close_req;
673 if (close_req != NULL) {
674 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
675 struct mdt_ioepoch *epoch;
677 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING);
678 epoch = req_capsule_client_get(&close_req->rq_pill,
683 LASSERT(!memcmp(&old, &epoch->handle, sizeof(old)));
684 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
685 epoch->handle = body->handle;
690 void mdc_commit_open(struct ptlrpc_request *req)
692 struct md_open_data *mod = req->rq_cb_data;
697 * No need to touch md_open_data::mod_och, it holds a reference on
698 * \var mod and will zero references to each other, \var mod will be
699 * freed after that when md_open_data::mod_och will put the reference.
703 * Do not let open request to disappear as it still may be needed
704 * for close rpc to happen (it may happen on evict only, otherwise
705 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
706 * called), just mark this rpc as committed to distinguish these 2
707 * cases, see mdc_close() for details. The open request reference will
708 * be put along with freeing \var mod.
710 ptlrpc_request_addref(req);
711 spin_lock(&req->rq_lock);
712 req->rq_committed = 1;
713 spin_unlock(&req->rq_lock);
714 req->rq_cb_data = NULL;
718 int mdc_set_open_replay_data(struct obd_export *exp,
719 struct obd_client_handle *och,
720 struct lookup_intent *it)
722 struct md_open_data *mod;
723 struct mdt_rec_create *rec;
724 struct mdt_body *body;
725 struct ptlrpc_request *open_req = it->d.lustre.it_data;
726 struct obd_import *imp = open_req->rq_import;
729 if (!open_req->rq_replay)
732 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
733 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
734 LASSERT(rec != NULL);
735 /* Incoming message in my byte order (it's been swabbed). */
736 /* Outgoing messages always in my byte order. */
737 LASSERT(body != NULL);
739 /* Only if the import is replayable, we set replay_open data */
740 if (och && imp->imp_replayable) {
741 mod = obd_mod_alloc();
743 DEBUG_REQ(D_ERROR, open_req,
744 "Can't allocate md_open_data");
749 * Take a reference on \var mod, to be freed on mdc_close().
750 * It protects \var mod from being freed on eviction (commit
751 * callback is called despite rq_replay flag).
752 * Another reference for \var och.
757 spin_lock(&open_req->rq_lock);
760 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
761 it_disposition(it, DISP_OPEN_STRIPE);
762 mod->mod_open_req = open_req;
763 open_req->rq_cb_data = mod;
764 open_req->rq_commit_cb = mdc_commit_open;
765 spin_unlock(&open_req->rq_lock);
768 rec->cr_fid2 = body->fid1;
769 rec->cr_ioepoch = body->ioepoch;
770 rec->cr_old_handle.cookie = body->handle.cookie;
771 open_req->rq_replay_cb = mdc_replay_open;
772 if (!fid_is_sane(&body->fid1)) {
773 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
778 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
782 static void mdc_free_open(struct md_open_data *mod)
786 if (mod->mod_is_create == 0 &&
787 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
790 LASSERT(mod->mod_open_req->rq_replay == 0);
792 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "free open request\n");
794 ptlrpc_request_committed(mod->mod_open_req, committed);
795 if (mod->mod_close_req)
796 ptlrpc_request_committed(mod->mod_close_req, committed);
799 int mdc_clear_open_replay_data(struct obd_export *exp,
800 struct obd_client_handle *och)
802 struct md_open_data *mod = och->och_mod;
806 * It is possible to not have \var mod in a case of eviction between
807 * lookup and ll_file_open().
812 LASSERT(mod != LP_POISON);
813 LASSERT(mod->mod_open_req != NULL);
823 /* Prepares the request for the replay by the given reply */
824 static void mdc_close_handle_reply(struct ptlrpc_request *req,
825 struct md_op_data *op_data, int rc) {
826 struct mdt_body *repbody;
827 struct mdt_ioepoch *epoch;
829 if (req && rc == -EAGAIN) {
830 repbody = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
831 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
833 epoch->flags |= MF_SOM_AU;
834 if (repbody->valid & OBD_MD_FLGETATTRLOCK)
835 op_data->op_flags |= MF_GETATTR_LOCK;
839 int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
840 struct md_open_data *mod, struct ptlrpc_request **request)
842 struct obd_device *obd = class_exp2obd(exp);
843 struct ptlrpc_request *req;
844 struct req_format *req_fmt;
849 req_fmt = &RQF_MDS_CLOSE;
850 if (op_data->op_bias & MDS_HSM_RELEASE) {
851 req_fmt = &RQF_MDS_RELEASE_CLOSE;
853 /* allocate a FID for volatile file */
854 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
856 CERROR("%s: "DFID" failed to allocate FID: %d\n",
857 obd->obd_name, PFID(&op_data->op_fid1), rc);
858 /* save the errcode and proceed to close */
864 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
868 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
870 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
872 ptlrpc_request_free(req);
876 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
877 * portal whose threads are not taking any DLM locks and are therefore
878 * always progressing */
879 req->rq_request_portal = MDS_READPAGE_PORTAL;
880 ptlrpc_at_set_req_timeout(req);
882 /* Ensure that this close's handle is fixed up during replay. */
883 if (likely(mod != NULL)) {
884 LASSERTF(mod->mod_open_req != NULL &&
885 mod->mod_open_req->rq_type != LI_POISON,
886 "POISONED open %p!\n", mod->mod_open_req);
888 mod->mod_close_req = req;
890 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
891 /* We no longer want to preserve this open for replay even
892 * though the open was committed. b=3632, b=3633 */
893 spin_lock(&mod->mod_open_req->rq_lock);
894 mod->mod_open_req->rq_replay = 0;
895 spin_unlock(&mod->mod_open_req->rq_lock);
897 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
900 mdc_close_pack(req, op_data);
902 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
903 obd->u.cli.cl_default_mds_easize);
904 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
905 obd->u.cli.cl_default_mds_cookiesize);
907 ptlrpc_request_set_replen(req);
909 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
910 rc = ptlrpc_queue_wait(req);
911 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
913 if (req->rq_repmsg == NULL) {
914 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
917 rc = req->rq_status ?: -EIO;
918 } else if (rc == 0 || rc == -EAGAIN) {
919 struct mdt_body *body;
921 rc = lustre_msg_get_status(req->rq_repmsg);
922 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
923 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
928 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
931 } else if (rc == -ESTALE) {
933 * it can be allowed error after 3633 if open was committed and
934 * server failed before close was sent. Let's check if mod
935 * exists and return no error in that case
938 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
939 LASSERT(mod->mod_open_req != NULL);
940 if (mod->mod_open_req->rq_committed)
947 mod->mod_close_req = NULL;
948 /* Since now, mod is accessed through open_req only,
949 * thus close req does not keep a reference on mod anymore. */
953 mdc_close_handle_reply(req, op_data, rc);
954 RETURN(rc < 0 ? rc : saved_rc);
957 int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
958 struct md_open_data *mod)
960 struct obd_device *obd = class_exp2obd(exp);
961 struct ptlrpc_request *req;
965 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
966 &RQF_MDS_DONE_WRITING);
970 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
971 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
973 ptlrpc_request_free(req);
978 LASSERTF(mod->mod_open_req != NULL &&
979 mod->mod_open_req->rq_type != LI_POISON,
980 "POISONED setattr %p!\n", mod->mod_open_req);
982 mod->mod_close_req = req;
983 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr");
984 /* We no longer want to preserve this setattr for replay even
985 * though the open was committed. b=3632, b=3633 */
986 spin_lock(&mod->mod_open_req->rq_lock);
987 mod->mod_open_req->rq_replay = 0;
988 spin_unlock(&mod->mod_open_req->rq_lock);
991 mdc_close_pack(req, op_data);
992 ptlrpc_request_set_replen(req);
994 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
995 rc = ptlrpc_queue_wait(req);
996 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
1000 * it can be allowed error after 3633 if open or setattr were
1001 * committed and server failed before close was sent.
1002 * Let's check if mod exists and return no error in that case
1005 LASSERT(mod->mod_open_req != NULL);
1006 if (mod->mod_open_req->rq_committed)
1013 mod->mod_close_req = NULL;
1014 LASSERT(mod->mod_open_req != NULL);
1017 /* Since now, mod is accessed through setattr req only,
1018 * thus DW req does not keep a reference on mod anymore. */
1022 mdc_close_handle_reply(req, op_data, rc);
1023 ptlrpc_req_finished(req);
1027 #ifdef HAVE_SPLIT_SUPPORT
1028 int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid,
1029 const struct page *page, int offset)
1031 struct ptlrpc_request *req;
1032 struct ptlrpc_bulk_desc *desc;
1036 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_WRITEPAGE);
1040 /* FIXME: capa doesn't support split yet */
1041 mdc_set_capa_size(req, &RMF_CAPA1, NULL);
1043 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_WRITEPAGE);
1045 ptlrpc_request_free(req);
1049 req->rq_request_portal = MDS_READPAGE_PORTAL;
1050 ptlrpc_at_set_req_timeout(req);
1052 desc = ptlrpc_prep_bulk_imp(req, 1, 1,BULK_GET_SOURCE, MDS_BULK_PORTAL);
1054 GOTO(out, rc = -ENOMEM);
1056 /* NB req now owns desc and will free it when it gets freed. */
1057 ptlrpc_prep_bulk_page(desc, (struct page *)page, 0, offset);
1058 mdc_readdir_pack(req, 0, offset, fid, NULL);
1060 ptlrpc_request_set_replen(req);
1061 rc = ptlrpc_queue_wait(req);
1065 rc = sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk);
1067 ptlrpc_req_finished(req);
1070 EXPORT_SYMBOL(mdc_sendpage);
1073 static int mdc_getpage(struct obd_export *exp, const struct lu_fid *fid,
1074 __u64 offset, struct obd_capa *oc,
1075 struct page **pages, int npages,
1076 struct ptlrpc_request **request)
1078 struct ptlrpc_request *req;
1079 struct ptlrpc_bulk_desc *desc;
1081 wait_queue_head_t waitq;
1083 struct l_wait_info lwi;
1088 init_waitqueue_head(&waitq);
1091 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1095 mdc_set_capa_size(req, &RMF_CAPA1, oc);
1097 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1099 ptlrpc_request_free(req);
1103 req->rq_request_portal = MDS_READPAGE_PORTAL;
1104 ptlrpc_at_set_req_timeout(req);
1106 desc = ptlrpc_prep_bulk_imp(req, npages, 1, BULK_PUT_SINK,
1109 ptlrpc_request_free(req);
1113 /* NB req now owns desc and will free it when it gets freed */
1114 for (i = 0; i < npages; i++)
1115 ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE);
1117 mdc_readdir_pack(req, offset, PAGE_CACHE_SIZE * npages, fid, oc);
1119 ptlrpc_request_set_replen(req);
1120 rc = ptlrpc_queue_wait(req);
1122 ptlrpc_req_finished(req);
1123 if (rc != -ETIMEDOUT)
1127 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1128 CERROR("%s: too many resend retries: rc = %d\n",
1129 exp->exp_obd->obd_name, -EIO);
1132 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1134 l_wait_event(waitq, 0, &lwi);
1139 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1140 req->rq_bulk->bd_nob_transferred);
1142 ptlrpc_req_finished(req);
1146 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1147 CERROR("%s: unexpected bytes transferred: %d (%ld expected)\n",
1148 exp->exp_obd->obd_name, req->rq_bulk->bd_nob_transferred,
1149 PAGE_CACHE_SIZE * npages);
1150 ptlrpc_req_finished(req);
1159 static void mdc_release_page(struct page *page, int remove)
1163 if (likely(page->mapping != NULL))
1164 truncate_complete_page(page->mapping, page);
1167 page_cache_release(page);
1170 static struct page *mdc_page_locate(struct address_space *mapping, __u64 *hash,
1171 __u64 *start, __u64 *end, int hash64)
1174 * Complement of hash is used as an index so that
1175 * radix_tree_gang_lookup() can be used to find a page with starting
1176 * hash _smaller_ than one we are looking for.
1178 unsigned long offset = hash_x_index(*hash, hash64);
1182 spin_lock_irq(&mapping->tree_lock);
1183 found = radix_tree_gang_lookup(&mapping->page_tree,
1184 (void **)&page, offset, 1);
1186 struct lu_dirpage *dp;
1188 page_cache_get(page);
1189 spin_unlock_irq(&mapping->tree_lock);
1191 * In contrast to find_lock_page() we are sure that directory
1192 * page cannot be truncated (while DLM lock is held) and,
1193 * hence, can avoid restart.
1195 * In fact, page cannot be locked here at all, because
1196 * mdc_read_page_remote does synchronous io.
1198 wait_on_page_locked(page);
1199 if (PageUptodate(page)) {
1201 if (BITS_PER_LONG == 32 && hash64) {
1202 *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1203 *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1204 *hash = *hash >> 32;
1206 *start = le64_to_cpu(dp->ldp_hash_start);
1207 *end = le64_to_cpu(dp->ldp_hash_end);
1209 if (unlikely(*start == 1 && *hash == 0))
1212 LASSERTF(*start <= *hash, "start = "LPX64
1213 ",end = "LPX64",hash = "LPX64"\n",
1214 *start, *end, *hash);
1215 CDEBUG(D_VFSTRACE, "offset %lx ["LPX64" "LPX64"],"
1216 " hash "LPX64"\n", offset, *start, *end, *hash);
1219 mdc_release_page(page, 0);
1221 } else if (*end != *start && *hash == *end) {
1223 * upon hash collision, remove this page,
1224 * otherwise put page reference, and
1225 * ll_get_dir_page() will issue RPC to fetch
1229 mdc_release_page(page,
1230 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1234 page_cache_release(page);
1235 page = ERR_PTR(-EIO);
1238 spin_unlock_irq(&mapping->tree_lock);
1245 * Adjust a set of pages, each page containing an array of lu_dirpages,
1246 * so that each page can be used as a single logical lu_dirpage.
1248 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
1249 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
1250 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
1251 * value is used as a cookie to request the next lu_dirpage in a
1252 * directory listing that spans multiple pages (two in this example):
1255 * .|--------v------- -----.
1256 * |s|e|f|p|ent|ent| ... |ent|
1257 * '--|-------------- -----' Each CFS_PAGE contains a single
1258 * '------. lu_dirpage.
1259 * .---------v------- -----.
1260 * |s|e|f|p|ent| 0 | ... | 0 |
1261 * '----------------- -----'
1263 * However, on hosts where the native VM page size (PAGE_CACHE_SIZE) is
1264 * larger than LU_PAGE_SIZE, a single host page may contain multiple
1265 * lu_dirpages. After reading the lu_dirpages from the MDS, the
1266 * ldp_hash_end of the first lu_dirpage refers to the one immediately
1267 * after it in the same CFS_PAGE (arrows simplified for brevity, but
1268 * in general e0==s1, e1==s2, etc.):
1270 * .-------------------- -----.
1271 * |s0|e0|f0|p|ent|ent| ... |ent|
1272 * |---v---------------- -----|
1273 * |s1|e1|f1|p|ent|ent| ... |ent|
1274 * |---v---------------- -----| Here, each CFS_PAGE contains
1275 * ... multiple lu_dirpages.
1276 * |---v---------------- -----|
1277 * |s'|e'|f'|p|ent|ent| ... |ent|
1278 * '---|---------------- -----'
1280 * .----------------------------.
1283 * This structure is transformed into a single logical lu_dirpage as follows:
1285 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
1286 * labeled 'next CFS_PAGE'.
1288 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
1289 * a hash collision with the next page exists.
1291 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
1292 * to the first entry of the next lu_dirpage.
1294 #if PAGE_CACHE_SIZE > LU_PAGE_SIZE
1295 static void mdc_adjust_dirpages(struct page **pages, int cfs_pgs, int lu_pgs)
1299 for (i = 0; i < cfs_pgs; i++) {
1300 struct lu_dirpage *dp = kmap(pages[i]);
1301 struct lu_dirpage *first = dp;
1302 struct lu_dirent *end_dirent = NULL;
1303 struct lu_dirent *ent;
1304 __u64 hash_end = le64_to_cpu(dp->ldp_hash_end);
1305 __u32 flags = le32_to_cpu(dp->ldp_flags);
1307 while (--lu_pgs > 0) {
1308 ent = lu_dirent_start(dp);
1309 for (end_dirent = ent; ent != NULL;
1310 end_dirent = ent, ent = lu_dirent_next(ent));
1312 /* Advance dp to next lu_dirpage. */
1313 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
1315 /* Check if we've reached the end of the CFS_PAGE. */
1316 if (!((unsigned long)dp & ~CFS_PAGE_MASK))
1319 /* Save the hash and flags of this lu_dirpage. */
1320 hash_end = le64_to_cpu(dp->ldp_hash_end);
1321 flags = le32_to_cpu(dp->ldp_flags);
1323 /* Check if lu_dirpage contains no entries. */
1324 if (end_dirent == NULL)
1327 /* Enlarge the end entry lde_reclen from 0 to
1328 * first entry of next lu_dirpage. */
1329 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
1330 end_dirent->lde_reclen =
1331 cpu_to_le16((char *)(dp->ldp_entries) -
1332 (char *)end_dirent);
1335 first->ldp_hash_end = hash_end;
1336 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
1337 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
1341 LASSERTF(lu_pgs == 0, "left = %d", lu_pgs);
1344 #define mdc_adjust_dirpages(pages, cfs_pgs, lu_pgs) do {} while (0)
1345 #endif /* PAGE_CACHE_SIZE > LU_PAGE_SIZE */
1347 /* parameters for readdir page */
1348 struct readpage_param {
1349 struct md_op_data *rp_mod;
1352 struct obd_export *rp_exp;
1353 struct md_callback *rp_cb;
1357 * Read pages from server.
1359 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
1360 * a header lu_dirpage which describes the start/end hash, and whether this
1361 * page is empty (contains no dir entry) or hash collide with next page.
1362 * After client receives reply, several pages will be integrated into dir page
1363 * in CFS_PAGE_SIZE (if CFS_PAGE_SIZE greater than LU_PAGE_SIZE), and the
1364 * lu_dirpage for this integrated page will be adjusted.
1366 static int mdc_read_page_remote(void *data, struct page *page0)
1368 struct readpage_param *rp = data;
1369 struct page **page_pool;
1371 struct lu_dirpage *dp;
1372 int rd_pgs = 0; /* number of pages read actually */
1374 struct md_op_data *op_data = rp->rp_mod;
1375 struct ptlrpc_request *req;
1376 int max_pages = op_data->op_max_pages;
1377 struct inode *inode;
1383 LASSERT(max_pages > 0 && max_pages <= PTLRPC_MAX_BRW_PAGES);
1384 if (op_data->op_mea1 != NULL) {
1385 __u32 index = op_data->op_stripe_offset;
1387 inode = op_data->op_mea1->lsm_md_oinfo[index].lmo_root;
1388 fid = &op_data->op_mea1->lsm_md_oinfo[index].lmo_fid;
1390 inode = op_data->op_data;
1391 fid = &op_data->op_fid1;
1393 LASSERT(inode != NULL);
1395 OBD_ALLOC(page_pool, sizeof(page_pool[0]) * max_pages);
1396 if (page_pool != NULL) {
1397 page_pool[0] = page0;
1403 for (npages = 1; npages < max_pages; npages++) {
1404 page = page_cache_alloc_cold(inode->i_mapping);
1407 page_pool[npages] = page;
1410 rc = mdc_getpage(rp->rp_exp, fid, rp->rp_off, op_data->op_capa1,
1411 page_pool, npages, &req);
1415 rd_pgs = (req->rq_bulk->bd_nob_transferred +
1416 PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
1417 lu_pgs = req->rq_bulk->bd_nob_transferred >>
1419 LASSERT(!(req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
1421 CDEBUG(D_INODE, "read %d(%d)/%d pages\n", rd_pgs, lu_pgs,
1422 op_data->op_npages);
1424 mdc_adjust_dirpages(page_pool, rd_pgs, lu_pgs);
1426 SetPageUptodate(page0);
1430 ptlrpc_req_finished(req);
1431 CDEBUG(D_CACHE, "read %d/%d pages\n", rd_pgs, npages);
1432 for (i = 1; i < npages; i++) {
1433 unsigned long offset;
1437 page = page_pool[i];
1439 if (rc < 0 || i >= rd_pgs) {
1440 page_cache_release(page);
1444 SetPageUptodate(page);
1447 hash = le64_to_cpu(dp->ldp_hash_start);
1450 offset = hash_x_index(hash, rp->rp_hash64);
1452 prefetchw(&page->flags);
1453 ret = add_to_page_cache_lru(page, inode->i_mapping, offset,
1458 CDEBUG(D_VFSTRACE, "page %lu add to page cache failed:"
1459 " rc = %d\n", offset, ret);
1460 page_cache_release(page);
1463 if (page_pool != &page0)
1464 OBD_FREE(page_pool, sizeof(page_pool[0]) * max_pages);
1470 * Read dir page from cache first, if it can not find it, read it from
1471 * server and add into the cache.
1473 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1474 struct md_callback *cb_op, struct page **ppage)
1476 struct lookup_intent it = { .it_op = IT_READDIR };
1478 struct inode *dir = op_data->op_data;
1479 struct address_space *mapping;
1480 struct lu_dirpage *dp;
1483 struct lustre_handle lockh;
1484 struct ptlrpc_request *enq_req = NULL;
1485 struct readpage_param rp_param;
1492 LASSERT(dir != NULL);
1493 mapping = dir->i_mapping;
1495 rc = mdc_intent_lock(exp, op_data, &it, &enq_req,
1496 cb_op->md_blocking_ast, 0);
1497 if (enq_req != NULL)
1498 ptlrpc_req_finished(enq_req);
1501 CERROR("%s: "DFID" lock enqueue fails: rc = %d\n",
1502 exp->exp_obd->obd_name, PFID(&op_data->op_fid1), rc);
1507 mdc_set_lock_data(exp, &it.d.lustre.it_lock_handle, dir, NULL);
1509 rp_param.rp_off = op_data->op_hash_offset;
1510 rp_param.rp_hash64 = op_data->op_cli_flags & CLI_HASH64;
1511 page = mdc_page_locate(mapping, &rp_param.rp_off, &start, &end,
1512 rp_param.rp_hash64);
1514 CERROR("%s: dir page locate: "DFID" at "LPU64": rc %ld\n",
1515 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1516 rp_param.rp_off, PTR_ERR(page));
1517 GOTO(out_unlock, rc = PTR_ERR(page));
1518 } else if (page != NULL) {
1520 * XXX nikita: not entirely correct handling of a corner case:
1521 * suppose hash chain of entries with hash value HASH crosses
1522 * border between pages P0 and P1. First both P0 and P1 are
1523 * cached, seekdir() is called for some entry from the P0 part
1524 * of the chain. Later P0 goes out of cache. telldir(HASH)
1525 * happens and finds P1, as it starts with matching hash
1526 * value. Remaining entries from P0 part of the chain are
1527 * skipped. (Is that really a bug?)
1529 * Possible solutions: 0. don't cache P1 is such case, handle
1530 * it as an "overflow" page. 1. invalidate all pages at
1531 * once. 2. use HASH|1 as an index for P1.
1533 GOTO(hash_collision, page);
1536 rp_param.rp_exp = exp;
1537 rp_param.rp_mod = op_data;
1538 page = read_cache_page(mapping,
1539 hash_x_index(rp_param.rp_off,
1540 rp_param.rp_hash64),
1541 mdc_read_page_remote, &rp_param);
1543 CERROR("%s: read cache page: "DFID" at "LPU64": rc %ld\n",
1544 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1545 rp_param.rp_off, PTR_ERR(page));
1546 GOTO(out_unlock, rc = PTR_ERR(page));
1549 wait_on_page_locked(page);
1551 if (!PageUptodate(page)) {
1552 CERROR("%s: page not updated: "DFID" at "LPU64": rc %d\n",
1553 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1554 rp_param.rp_off, -5);
1557 if (!PageChecked(page))
1558 SetPageChecked(page);
1559 if (PageError(page)) {
1560 CERROR("%s: page error: "DFID" at "LPU64": rc %d\n",
1561 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1562 rp_param.rp_off, -5);
1567 dp = page_address(page);
1568 if (BITS_PER_LONG == 32 && rp_param.rp_hash64) {
1569 start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1570 end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1571 rp_param.rp_off = op_data->op_hash_offset >> 32;
1573 start = le64_to_cpu(dp->ldp_hash_start);
1574 end = le64_to_cpu(dp->ldp_hash_end);
1575 rp_param.rp_off = op_data->op_hash_offset;
1578 LASSERT(start == rp_param.rp_off);
1579 CWARN("Page-wide hash collision: %#lx\n", (unsigned long)end);
1580 #if BITS_PER_LONG == 32
1581 CWARN("Real page-wide hash collision at ["LPU64" "LPU64"] with "
1582 "hash "LPU64"\n", le64_to_cpu(dp->ldp_hash_start),
1583 le64_to_cpu(dp->ldp_hash_end), op_data->op_hash_offset);
1587 * Fetch whole overflow chain...
1595 lockh.cookie = it.d.lustre.it_lock_handle;
1596 ldlm_lock_decref(&lockh, it.d.lustre.it_lock_mode);
1597 it.d.lustre.it_lock_handle = 0;
1601 mdc_release_page(page, 1);
1607 * Read one directory entry from the cache.
1609 int mdc_read_entry(struct obd_export *exp, struct md_op_data *op_data,
1610 struct md_callback *cb_op, struct lu_dirent **entp,
1611 struct page **ppage)
1613 struct page *page = NULL;
1614 struct lu_dirpage *dp;
1615 struct lu_dirent *ent;
1617 __u32 same_hash_count;
1618 __u64 hash_offset = op_data->op_hash_offset;
1621 CDEBUG(D_INFO, DFID " offset = "LPU64", flags %#x\n",
1622 PFID(&op_data->op_fid1), op_data->op_hash_offset,
1623 op_data->op_cli_flags);
1628 if (op_data->op_hash_offset == MDS_DIR_END_OFF)
1631 rc = mdc_read_page(exp, op_data, cb_op, &page);
1635 /* same_hash_count means how many entries with this
1636 * hash value has been read */
1637 same_hash_count = op_data->op_same_hash_offset + 1;
1638 dp = page_address(page);
1639 for (ent = lu_dirent_start(dp); ent != NULL;
1640 ent = lu_dirent_next(ent)) {
1641 /* Skip dummy entry */
1642 if (le16_to_cpu(ent->lde_namelen) == 0)
1645 if (le64_to_cpu(ent->lde_hash) <
1646 op_data->op_hash_offset)
1649 if (unlikely(le64_to_cpu(ent->lde_hash) ==
1650 op_data->op_hash_offset)) {
1651 /* If it is not for next entry, which usually from
1652 * ll_dir_entry_start, return this entry. */
1653 if (!(op_data->op_cli_flags & CLI_NEXT_ENTRY))
1656 /* Keep reading until all of entries being read are
1658 if (same_hash_count > 0) {
1666 /* If it can not find entry in current page, try next page. */
1668 if (le64_to_cpu(dp->ldp_hash_end) == MDS_DIR_END_OFF) {
1669 op_data->op_same_hash_offset = 0;
1670 mdc_release_page(page,
1671 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1675 op_data->op_hash_offset = le64_to_cpu(dp->ldp_hash_end);
1676 mdc_release_page(page,
1677 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1678 rc = mdc_read_page(exp, op_data, cb_op, &page);
1683 dp = page_address(page);
1684 ent = lu_dirent_start(dp);
1688 /* If the next hash is the same as the current hash, increase
1689 * the op_same_hash_offset to resolve the same hash conflict */
1690 if (ent != NULL && op_data->op_cli_flags & CLI_NEXT_ENTRY) {
1691 if (unlikely(le64_to_cpu(ent->lde_hash) == hash_offset))
1692 op_data->op_same_hash_offset++;
1694 op_data->op_same_hash_offset = 0;
1702 #else /* __KERNEL__ */
1705 *mdc_read_page_remote(struct obd_export *exp, const struct lmv_oinfo *lmo,
1706 const __u64 hash, struct obd_capa *oc)
1708 struct ptlrpc_request *req = NULL;
1712 OBD_PAGE_ALLOC(page, 0);
1714 return ERR_PTR(-ENOMEM);
1716 rc = mdc_getpage(exp, &lmo->lmo_fid, hash, oc, &page, 1, &req);
1718 ptlrpc_req_finished(req);
1721 OBD_PAGE_FREE(page);
1728 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1729 struct md_callback *cb_op,
1730 struct page **ppage)
1733 struct lmv_oinfo *lmo;
1736 /* No local cache for liblustre, always read entry remotely */
1737 lmo = &op_data->op_mea1->lsm_md_oinfo[op_data->op_stripe_offset];
1738 page = mdc_read_page_remote(exp, lmo, op_data->op_hash_offset,
1741 return PTR_ERR(page);
1748 int mdc_read_entry(struct obd_export *exp, struct md_op_data *op_data,
1749 struct md_callback *cb_op, struct lu_dirent **entp,
1750 struct page **ppage)
1752 struct page *page = NULL;
1753 struct lu_dirpage *dp;
1754 struct lu_dirent *ent;
1758 rc = mdc_read_page(exp, op_data, cb_op, &page);
1762 dp = page_address(page);
1763 if (le64_to_cpu(dp->ldp_hash_end) < op_data->op_hash_offset)
1764 GOTO(out, *entp = NULL);
1766 for (ent = lu_dirent_start(dp); ent != NULL;
1767 ent = lu_dirent_next(ent))
1768 if (le64_to_cpu(ent->lde_hash) >= op_data->op_hash_offset)
1773 OBD_PAGE_FREE(page);
1779 static int mdc_statfs(const struct lu_env *env,
1780 struct obd_export *exp, struct obd_statfs *osfs,
1781 __u64 max_age, __u32 flags)
1783 struct obd_device *obd = class_exp2obd(exp);
1784 struct ptlrpc_request *req;
1785 struct obd_statfs *msfs;
1786 struct obd_import *imp = NULL;
1791 * Since the request might also come from lprocfs, so we need
1792 * sync this with client_disconnect_export Bug15684
1794 down_read(&obd->u.cli.cl_sem);
1795 if (obd->u.cli.cl_import)
1796 imp = class_import_get(obd->u.cli.cl_import);
1797 up_read(&obd->u.cli.cl_sem);
1801 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1802 LUSTRE_MDS_VERSION, MDS_STATFS);
1804 GOTO(output, rc = -ENOMEM);
1806 ptlrpc_request_set_replen(req);
1808 if (flags & OBD_STATFS_NODELAY) {
1809 /* procfs requests not want stay in wait for avoid deadlock */
1810 req->rq_no_resend = 1;
1811 req->rq_no_delay = 1;
1814 rc = ptlrpc_queue_wait(req);
1816 /* check connection error first */
1817 if (imp->imp_connect_error)
1818 rc = imp->imp_connect_error;
1822 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1824 GOTO(out, rc = -EPROTO);
1829 ptlrpc_req_finished(req);
1831 class_import_put(imp);
1835 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1837 __u32 keylen, vallen;
1841 if (gf->gf_pathlen > PATH_MAX)
1842 RETURN(-ENAMETOOLONG);
1843 if (gf->gf_pathlen < 2)
1846 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1847 keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
1848 OBD_ALLOC(key, keylen);
1851 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1852 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1854 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
1855 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1857 if (!fid_is_sane(&gf->gf_fid))
1858 GOTO(out, rc = -EINVAL);
1860 /* Val is struct getinfo_fid2path result plus path */
1861 vallen = sizeof(*gf) + gf->gf_pathlen;
1863 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf, NULL);
1864 if (rc != 0 && rc != -EREMOTE)
1867 if (vallen <= sizeof(*gf))
1868 GOTO(out, rc = -EPROTO);
1869 else if (vallen > sizeof(*gf) + gf->gf_pathlen)
1870 GOTO(out, rc = -EOVERFLOW);
1872 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n%s\n",
1873 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);
1876 OBD_FREE(key, keylen);
1880 static int mdc_ioc_hsm_progress(struct obd_export *exp,
1881 struct hsm_progress_kernel *hpk)
1883 struct obd_import *imp = class_exp2cliimp(exp);
1884 struct hsm_progress_kernel *req_hpk;
1885 struct ptlrpc_request *req;
1889 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1890 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1892 GOTO(out, rc = -ENOMEM);
1894 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
1896 /* Copy hsm_progress struct */
1897 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1898 if (req_hpk == NULL)
1899 GOTO(out, rc = -EPROTO);
1902 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
1904 ptlrpc_request_set_replen(req);
1906 rc = mdc_queue_wait(req);
1909 ptlrpc_req_finished(req);
1913 static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
1915 __u32 *archive_mask;
1916 struct ptlrpc_request *req;
1920 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
1922 MDS_HSM_CT_REGISTER);
1924 GOTO(out, rc = -ENOMEM);
1926 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
1928 /* Copy hsm_progress struct */
1929 archive_mask = req_capsule_client_get(&req->rq_pill,
1930 &RMF_MDS_HSM_ARCHIVE);
1931 if (archive_mask == NULL)
1932 GOTO(out, rc = -EPROTO);
1934 *archive_mask = archives;
1936 ptlrpc_request_set_replen(req);
1938 rc = mdc_queue_wait(req);
1941 ptlrpc_req_finished(req);
1945 static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1946 struct md_op_data *op_data)
1948 struct hsm_current_action *hca = op_data->op_data;
1949 struct hsm_current_action *req_hca;
1950 struct ptlrpc_request *req;
1954 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1955 &RQF_MDS_HSM_ACTION);
1959 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1961 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1963 ptlrpc_request_free(req);
1967 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1968 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1970 ptlrpc_request_set_replen(req);
1972 rc = mdc_queue_wait(req);
1976 req_hca = req_capsule_server_get(&req->rq_pill,
1977 &RMF_MDS_HSM_CURRENT_ACTION);
1978 if (req_hca == NULL)
1979 GOTO(out, rc = -EPROTO);
1985 ptlrpc_req_finished(req);
1989 static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1991 struct ptlrpc_request *req;
1995 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1997 MDS_HSM_CT_UNREGISTER);
1999 GOTO(out, rc = -ENOMEM);
2001 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
2003 ptlrpc_request_set_replen(req);
2005 rc = mdc_queue_wait(req);
2008 ptlrpc_req_finished(req);
2012 static int mdc_ioc_hsm_state_get(struct obd_export *exp,
2013 struct md_op_data *op_data)
2015 struct hsm_user_state *hus = op_data->op_data;
2016 struct hsm_user_state *req_hus;
2017 struct ptlrpc_request *req;
2021 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2022 &RQF_MDS_HSM_STATE_GET);
2026 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
2028 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
2030 ptlrpc_request_free(req);
2034 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
2035 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
2037 ptlrpc_request_set_replen(req);
2039 rc = mdc_queue_wait(req);
2043 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
2044 if (req_hus == NULL)
2045 GOTO(out, rc = -EPROTO);
2051 ptlrpc_req_finished(req);
2055 static int mdc_ioc_hsm_state_set(struct obd_export *exp,
2056 struct md_op_data *op_data)
2058 struct hsm_state_set *hss = op_data->op_data;
2059 struct hsm_state_set *req_hss;
2060 struct ptlrpc_request *req;
2064 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2065 &RQF_MDS_HSM_STATE_SET);
2069 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
2071 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
2073 ptlrpc_request_free(req);
2077 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
2078 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
2081 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
2082 if (req_hss == NULL)
2083 GOTO(out, rc = -EPROTO);
2086 ptlrpc_request_set_replen(req);
2088 rc = mdc_queue_wait(req);
2093 ptlrpc_req_finished(req);
2097 static int mdc_ioc_hsm_request(struct obd_export *exp,
2098 struct hsm_user_request *hur)
2100 struct obd_import *imp = class_exp2cliimp(exp);
2101 struct ptlrpc_request *req;
2102 struct hsm_request *req_hr;
2103 struct hsm_user_item *req_hui;
2108 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
2110 GOTO(out, rc = -ENOMEM);
2112 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
2113 hur->hur_request.hr_itemcount
2114 * sizeof(struct hsm_user_item));
2115 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
2116 hur->hur_request.hr_data_len);
2118 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
2120 ptlrpc_request_free(req);
2124 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
2126 /* Copy hsm_request struct */
2127 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
2129 GOTO(out, rc = -EPROTO);
2130 *req_hr = hur->hur_request;
2132 /* Copy hsm_user_item structs */
2133 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
2134 if (req_hui == NULL)
2135 GOTO(out, rc = -EPROTO);
2136 memcpy(req_hui, hur->hur_user_item,
2137 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
2139 /* Copy opaque field */
2140 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
2141 if (req_opaque == NULL)
2142 GOTO(out, rc = -EPROTO);
2143 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
2145 ptlrpc_request_set_replen(req);
2147 rc = mdc_queue_wait(req);
2151 ptlrpc_req_finished(req);
2155 static struct kuc_hdr *changelog_kuc_hdr(char *buf, int len, int flags)
2157 struct kuc_hdr *lh = (struct kuc_hdr *)buf;
2159 LASSERT(len <= KUC_CHANGELOG_MSG_MAXSIZE);
2161 lh->kuc_magic = KUC_MAGIC;
2162 lh->kuc_transport = KUC_TRANSPORT_CHANGELOG;
2163 lh->kuc_flags = flags;
2164 lh->kuc_msgtype = CL_RECORD;
2165 lh->kuc_msglen = len;
2169 #define D_CHANGELOG 0
2171 struct changelog_show {
2176 struct obd_device *cs_obd;
2179 static int changelog_kkuc_cb(const struct lu_env *env, struct llog_handle *llh,
2180 struct llog_rec_hdr *hdr, void *data)
2182 struct changelog_show *cs = data;
2183 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
2188 if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
2190 CERROR("%s: not a changelog rec %x/%d: rc = %d\n",
2191 cs->cs_obd->obd_name, rec->cr_hdr.lrh_type,
2192 rec->cr.cr_type, rc);
2196 if (rec->cr.cr_index < cs->cs_startrec) {
2197 /* Skip entries earlier than what we are interested in */
2198 CDEBUG(D_CHANGELOG, "rec="LPU64" start="LPU64"\n",
2199 rec->cr.cr_index, cs->cs_startrec);
2203 CDEBUG(D_CHANGELOG, LPU64" %02d%-5s "LPU64" 0x%x t="DFID" p="DFID
2204 " %.*s\n", rec->cr.cr_index, rec->cr.cr_type,
2205 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
2206 rec->cr.cr_flags & CLF_FLAGMASK,
2207 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
2208 rec->cr.cr_namelen, changelog_rec_name(&rec->cr));
2210 len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen;
2212 /* Set up the message */
2213 lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags);
2214 memcpy(lh + 1, &rec->cr, len - sizeof(*lh));
2216 rc = libcfs_kkuc_msg_put(cs->cs_fp, lh);
2217 CDEBUG(D_CHANGELOG, "kucmsg fp %p len %d rc %d\n", cs->cs_fp, len,rc);
2222 static int mdc_changelog_send_thread(void *csdata)
2224 struct changelog_show *cs = csdata;
2225 struct llog_ctxt *ctxt = NULL;
2226 struct llog_handle *llh = NULL;
2227 struct kuc_hdr *kuch;
2230 CDEBUG(D_CHANGELOG, "changelog to fp=%p start "LPU64"\n",
2231 cs->cs_fp, cs->cs_startrec);
2233 OBD_ALLOC(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
2234 if (cs->cs_buf == NULL)
2235 GOTO(out, rc = -ENOMEM);
2237 /* Set up the remote catalog handle */
2238 ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT);
2240 GOTO(out, rc = -ENOENT);
2241 rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG,
2244 CERROR("%s: fail to open changelog catalog: rc = %d\n",
2245 cs->cs_obd->obd_name, rc);
2248 rc = llog_init_handle(NULL, llh, LLOG_F_IS_CAT, NULL);
2250 CERROR("llog_init_handle failed %d\n", rc);
2254 rc = llog_cat_process(NULL, llh, changelog_kkuc_cb, cs, 0, 0);
2256 /* Send EOF no matter what our result */
2257 if ((kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch),
2259 kuch->kuc_msgtype = CL_EOF;
2260 libcfs_kkuc_msg_put(cs->cs_fp, kuch);
2266 llog_cat_close(NULL, llh);
2268 llog_ctxt_put(ctxt);
2270 OBD_FREE(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
2275 static int mdc_ioc_changelog_send(struct obd_device *obd,
2276 struct ioc_changelog *icc)
2278 struct changelog_show *cs;
2279 struct task_struct *task;
2282 /* Freed in mdc_changelog_send_thread */
2288 cs->cs_startrec = icc->icc_recno;
2289 /* matching fput in mdc_changelog_send_thread */
2290 cs->cs_fp = fget(icc->icc_id);
2291 cs->cs_flags = icc->icc_flags;
2294 * New thread because we should return to user app before
2295 * writing into our pipe
2297 task = kthread_run(mdc_changelog_send_thread, cs,
2298 "mdc_clg_send_thread");
2301 CERROR("%s: cannot start changelog thread: rc = %d\n",
2306 CDEBUG(D_CHANGELOG, "%s: started changelog thread\n",
2313 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2314 struct lustre_kernelcomm *lk);
2316 static int mdc_quotacheck(struct obd_device *unused, struct obd_export *exp,
2317 struct obd_quotactl *oqctl)
2319 struct client_obd *cli = &exp->exp_obd->u.cli;
2320 struct ptlrpc_request *req;
2321 struct obd_quotactl *body;
2325 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
2326 &RQF_MDS_QUOTACHECK, LUSTRE_MDS_VERSION,
2331 body = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2334 ptlrpc_request_set_replen(req);
2336 /* the next poll will find -ENODATA, that means quotacheck is
2338 cli->cl_qchk_stat = -ENODATA;
2339 rc = ptlrpc_queue_wait(req);
2341 cli->cl_qchk_stat = rc;
2342 ptlrpc_req_finished(req);
2346 static int mdc_quota_poll_check(struct obd_export *exp,
2347 struct if_quotacheck *qchk)
2349 struct client_obd *cli = &exp->exp_obd->u.cli;
2353 qchk->obd_uuid = cli->cl_target_uuid;
2354 memcpy(qchk->obd_type, LUSTRE_MDS_NAME, strlen(LUSTRE_MDS_NAME));
2356 rc = cli->cl_qchk_stat;
2357 /* the client is not the previous one */
2358 if (rc == CL_NOT_QUOTACHECKED)
2363 static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
2364 struct obd_quotactl *oqctl)
2366 struct ptlrpc_request *req;
2367 struct obd_quotactl *oqc;
2371 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
2372 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
2377 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2380 ptlrpc_request_set_replen(req);
2381 ptlrpc_at_set_req_timeout(req);
2382 req->rq_no_resend = 1;
2384 rc = ptlrpc_queue_wait(req);
2386 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
2388 if (req->rq_repmsg &&
2389 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
2392 CERROR ("Can't unpack obd_quotactl\n");
2395 ptlrpc_req_finished(req);
2400 static int mdc_ioc_swap_layouts(struct obd_export *exp,
2401 struct md_op_data *op_data)
2403 struct list_head cancels = LIST_HEAD_INIT(cancels);
2404 struct ptlrpc_request *req;
2406 struct mdc_swap_layouts *msl, *payload;
2409 msl = op_data->op_data;
2411 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
2412 * first thing it will do is to cancel the 2 layout
2413 * locks hold by this client.
2414 * So the client must cancel its layout locks on the 2 fids
2415 * with the request RPC to avoid extra RPC round trips
2417 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
2418 LCK_EX, MDS_INODELOCK_LAYOUT |
2419 MDS_INODELOCK_XATTR);
2420 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
2421 LCK_EX, MDS_INODELOCK_LAYOUT |
2422 MDS_INODELOCK_XATTR);
2424 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2425 &RQF_MDS_SWAP_LAYOUTS);
2427 ldlm_lock_list_put(&cancels, l_bl_ast, count);
2431 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
2432 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
2434 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
2436 ptlrpc_request_free(req);
2440 mdc_swap_layouts_pack(req, op_data);
2442 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
2447 ptlrpc_request_set_replen(req);
2449 rc = ptlrpc_queue_wait(req);
2455 ptlrpc_req_finished(req);
2459 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2460 void *karg, void *uarg)
2462 struct obd_device *obd = exp->exp_obd;
2463 struct obd_ioctl_data *data = karg;
2464 struct obd_import *imp = obd->u.cli.cl_import;
2468 if (!try_module_get(THIS_MODULE)) {
2469 CERROR("Can't get module. Is it alive?");
2473 case OBD_IOC_CHANGELOG_SEND:
2474 rc = mdc_ioc_changelog_send(obd, karg);
2476 case OBD_IOC_CHANGELOG_CLEAR: {
2477 struct ioc_changelog *icc = karg;
2478 struct changelog_setinfo cs =
2479 {.cs_recno = icc->icc_recno, .cs_id = icc->icc_id};
2480 rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR),
2481 KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
2485 case OBD_IOC_FID2PATH:
2486 rc = mdc_ioc_fid2path(exp, karg);
2488 case LL_IOC_HSM_CT_START:
2489 rc = mdc_ioc_hsm_ct_start(exp, karg);
2490 /* ignore if it was already registered on this MDS. */
2494 case LL_IOC_HSM_PROGRESS:
2495 rc = mdc_ioc_hsm_progress(exp, karg);
2497 case LL_IOC_HSM_STATE_GET:
2498 rc = mdc_ioc_hsm_state_get(exp, karg);
2500 case LL_IOC_HSM_STATE_SET:
2501 rc = mdc_ioc_hsm_state_set(exp, karg);
2503 case LL_IOC_HSM_ACTION:
2504 rc = mdc_ioc_hsm_current_action(exp, karg);
2506 case LL_IOC_HSM_REQUEST:
2507 rc = mdc_ioc_hsm_request(exp, karg);
2509 case OBD_IOC_CLIENT_RECOVER:
2510 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
2514 case IOC_OSC_SET_ACTIVE:
2515 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
2517 case OBD_IOC_POLL_QUOTACHECK:
2518 rc = mdc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2520 case OBD_IOC_PING_TARGET:
2521 rc = ptlrpc_obd_ping(obd);
2524 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
2525 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
2526 * there'd be no LMV layer thus we might be called here. Eventually
2527 * this code should be removed.
2530 case IOC_OBD_STATFS: {
2531 struct obd_statfs stat_buf = {0};
2533 if (*((__u32 *) data->ioc_inlbuf2) != 0)
2534 GOTO(out, rc = -ENODEV);
2537 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
2538 min((int)data->ioc_plen2,
2539 (int)sizeof(struct obd_uuid))))
2540 GOTO(out, rc = -EFAULT);
2542 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
2543 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
2548 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
2549 min((int) data->ioc_plen1,
2550 (int) sizeof(stat_buf))))
2551 GOTO(out, rc = -EFAULT);
2555 case OBD_IOC_QUOTACTL: {
2556 struct if_quotactl *qctl = karg;
2557 struct obd_quotactl *oqctl;
2559 OBD_ALLOC_PTR(oqctl);
2561 GOTO(out, rc = -ENOMEM);
2563 QCTL_COPY(oqctl, qctl);
2564 rc = obd_quotactl(exp, oqctl);
2566 QCTL_COPY(qctl, oqctl);
2567 qctl->qc_valid = QC_MDTIDX;
2568 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
2571 OBD_FREE_PTR(oqctl);
2574 case LL_IOC_GET_CONNECT_FLAGS:
2575 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
2576 sizeof(*exp_connect_flags_ptr(exp))))
2577 GOTO(out, rc = -EFAULT);
2580 case LL_IOC_LOV_SWAP_LAYOUTS:
2581 rc = mdc_ioc_swap_layouts(exp, karg);
2584 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
2585 GOTO(out, rc = -ENOTTY);
2588 module_put(THIS_MODULE);
2593 int mdc_get_info_rpc(struct obd_export *exp,
2594 obd_count keylen, void *key,
2595 int vallen, void *val)
2597 struct obd_import *imp = class_exp2cliimp(exp);
2598 struct ptlrpc_request *req;
2603 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
2607 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
2608 RCL_CLIENT, keylen);
2609 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
2610 RCL_CLIENT, sizeof(__u32));
2612 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
2614 ptlrpc_request_free(req);
2618 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
2619 memcpy(tmp, key, keylen);
2620 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
2621 memcpy(tmp, &vallen, sizeof(__u32));
2623 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
2624 RCL_SERVER, vallen);
2625 ptlrpc_request_set_replen(req);
2627 rc = ptlrpc_queue_wait(req);
2628 /* -EREMOTE means the get_info result is partial, and it needs to
2629 * continue on another MDT, see fid2path part in lmv_iocontrol */
2630 if (rc == 0 || rc == -EREMOTE) {
2631 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
2632 memcpy(val, tmp, vallen);
2633 if (ptlrpc_rep_need_swab(req)) {
2634 if (KEY_IS(KEY_FID2PATH))
2635 lustre_swab_fid2path(val);
2638 ptlrpc_req_finished(req);
2643 static void lustre_swab_hai(struct hsm_action_item *h)
2645 __swab32s(&h->hai_len);
2646 __swab32s(&h->hai_action);
2647 lustre_swab_lu_fid(&h->hai_fid);
2648 lustre_swab_lu_fid(&h->hai_dfid);
2649 __swab64s(&h->hai_cookie);
2650 __swab64s(&h->hai_extent.offset);
2651 __swab64s(&h->hai_extent.length);
2652 __swab64s(&h->hai_gid);
2655 static void lustre_swab_hal(struct hsm_action_list *h)
2657 struct hsm_action_item *hai;
2660 __swab32s(&h->hal_version);
2661 __swab32s(&h->hal_count);
2662 __swab32s(&h->hal_archive_id);
2663 __swab64s(&h->hal_flags);
2665 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
2666 lustre_swab_hai(hai);
2669 static void lustre_swab_kuch(struct kuc_hdr *l)
2671 __swab16s(&l->kuc_magic);
2672 /* __u8 l->kuc_transport */
2673 __swab16s(&l->kuc_msgtype);
2674 __swab16s(&l->kuc_msglen);
2677 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2678 struct lustre_kernelcomm *lk)
2680 struct obd_import *imp = class_exp2cliimp(exp);
2681 __u32 archive = lk->lk_data;
2684 if (lk->lk_group != KUC_GRP_HSM) {
2685 CERROR("Bad copytool group %d\n", lk->lk_group);
2689 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2690 lk->lk_uid, lk->lk_group, lk->lk_flags);
2692 if (lk->lk_flags & LK_FLG_STOP) {
2693 /* Unregister with the coordinator */
2694 rc = mdc_ioc_hsm_ct_unregister(imp);
2696 rc = mdc_ioc_hsm_ct_register(imp, archive);
2703 * Send a message to any listening copytools
2704 * @param val KUC message (kuc_hdr + hsm_action_list)
2705 * @param len total length of message
2707 static int mdc_hsm_copytool_send(int len, void *val)
2709 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2710 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2714 if (len < sizeof(*lh) + sizeof(*hal)) {
2715 CERROR("Short HSM message %d < %d\n", len,
2716 (int) (sizeof(*lh) + sizeof(*hal)));
2719 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2720 lustre_swab_kuch(lh);
2721 lustre_swab_hal(hal);
2722 } else if (lh->kuc_magic != KUC_MAGIC) {
2723 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2727 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2729 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2730 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2732 /* Broadcast to HSM listeners */
2733 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
2739 * callback function passed to kuc for re-registering each HSM copytool
2740 * running on MDC, after MDT shutdown/recovery.
2741 * @param data copytool registration data
2742 * @param cb_arg callback argument (obd_import)
2744 static int mdc_hsm_ct_reregister(void *data, void *cb_arg)
2746 struct kkuc_ct_data *kcd = data;
2747 struct obd_import *imp = (struct obd_import *)cb_arg;
2750 if (kcd == NULL || kcd->kcd_magic != KKUC_CT_DATA_MAGIC)
2753 if (!obd_uuid_equals(&kcd->kcd_uuid, &imp->imp_obd->obd_uuid))
2756 CDEBUG(D_HA, "%s: recover copytool registration to MDT (archive=%#x)\n",
2757 imp->imp_obd->obd_name, kcd->kcd_archive);
2758 rc = mdc_ioc_hsm_ct_register(imp, kcd->kcd_archive);
2760 /* ignore error if the copytool is already registered */
2761 return (rc == -EEXIST) ? 0 : rc;
2765 * Re-establish all kuc contexts with MDT
2766 * after MDT shutdown/recovery.
2768 static int mdc_kuc_reregister(struct obd_import *imp)
2770 /* re-register HSM agents */
2771 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister,
2775 int mdc_set_info_async(const struct lu_env *env,
2776 struct obd_export *exp,
2777 obd_count keylen, void *key,
2778 obd_count vallen, void *val,
2779 struct ptlrpc_request_set *set)
2781 struct obd_import *imp = class_exp2cliimp(exp);
2785 if (KEY_IS(KEY_READ_ONLY)) {
2786 if (vallen != sizeof(int))
2789 spin_lock(&imp->imp_lock);
2790 if (*((int *)val)) {
2791 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2792 imp->imp_connect_data.ocd_connect_flags |=
2795 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2796 imp->imp_connect_data.ocd_connect_flags &=
2797 ~OBD_CONNECT_RDONLY;
2799 spin_unlock(&imp->imp_lock);
2801 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2802 keylen, key, vallen, val, set);
2805 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2806 sptlrpc_conf_client_adapt(exp->exp_obd);
2809 if (KEY_IS(KEY_FLUSH_CTX)) {
2810 sptlrpc_import_flush_my_ctx(imp);
2813 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2814 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2815 keylen, key, vallen, val, set);
2818 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2819 rc = mdc_hsm_copytool_send(vallen, val);
2823 CERROR("Unknown key %s\n", (char *)key);
2827 int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2828 __u32 keylen, void *key, __u32 *vallen, void *val,
2829 struct lov_stripe_md *lsm)
2833 if (KEY_IS(KEY_MAX_EASIZE)) {
2834 int mdsize, *max_easize;
2836 if (*vallen != sizeof(int))
2838 mdsize = *(int *)val;
2839 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2840 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2842 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2844 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2845 int *default_easize;
2847 if (*vallen != sizeof(int))
2849 default_easize = val;
2850 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2852 } else if (KEY_IS(KEY_MAX_COOKIESIZE)) {
2853 int mdsize, *max_cookiesize;
2855 if (*vallen != sizeof(int))
2857 mdsize = *(int *)val;
2858 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_cookiesize)
2859 exp->exp_obd->u.cli.cl_max_mds_cookiesize = mdsize;
2860 max_cookiesize = val;
2861 *max_cookiesize = exp->exp_obd->u.cli.cl_max_mds_cookiesize;
2863 } else if (KEY_IS(KEY_DEFAULT_COOKIESIZE)) {
2864 int *default_cookiesize;
2866 if (*vallen != sizeof(int))
2868 default_cookiesize = val;
2869 *default_cookiesize =
2870 exp->exp_obd->u.cli.cl_default_mds_cookiesize;
2872 } else if (KEY_IS(KEY_CONN_DATA)) {
2873 struct obd_import *imp = class_exp2cliimp(exp);
2874 struct obd_connect_data *data = val;
2876 if (*vallen != sizeof(*data))
2879 *data = imp->imp_connect_data;
2881 } else if (KEY_IS(KEY_TGT_COUNT)) {
2886 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2891 int mdc_fsync(struct obd_export *exp, const struct lu_fid *fid,
2892 struct obd_capa *oc, struct ptlrpc_request **request)
2894 struct ptlrpc_request *req;
2899 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2903 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2905 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2907 ptlrpc_request_free(req);
2911 mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
2913 ptlrpc_request_set_replen(req);
2915 rc = ptlrpc_queue_wait(req);
2917 ptlrpc_req_finished(req);
2923 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2924 enum obd_import_event event)
2928 LASSERT(imp->imp_obd == obd);
2931 case IMP_EVENT_DISCON: {
2933 /* XXX Pass event up to OBDs stack. used only for FLD now */
2934 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
2938 case IMP_EVENT_INACTIVE: {
2939 struct client_obd *cli = &obd->u.cli;
2941 * Flush current sequence to make client obtain new one
2942 * from server in case of disconnect/reconnect.
2944 if (cli->cl_seq != NULL)
2945 seq_client_flush(cli->cl_seq);
2947 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
2950 case IMP_EVENT_INVALIDATE: {
2951 struct ldlm_namespace *ns = obd->obd_namespace;
2953 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2957 case IMP_EVENT_ACTIVE:
2958 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
2959 /* redo the kuc registration after reconnecting */
2961 rc = mdc_kuc_reregister(imp);
2964 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
2966 case IMP_EVENT_DEACTIVATE:
2967 case IMP_EVENT_ACTIVATE:
2970 CERROR("Unknown import event %x\n", event);
2976 int mdc_fid_alloc(const struct lu_env *env, struct obd_export *exp,
2977 struct lu_fid *fid, struct md_op_data *op_data)
2979 struct client_obd *cli = &exp->exp_obd->u.cli;
2980 struct lu_client_seq *seq = cli->cl_seq;
2982 RETURN(seq_client_alloc_fid(env, seq, fid));
2985 struct obd_uuid *mdc_get_uuid(struct obd_export *exp) {
2986 struct client_obd *cli = &exp->exp_obd->u.cli;
2987 return &cli->cl_target_uuid;
2991 * Determine whether the lock can be canceled before replaying it during
2992 * recovery, non zero value will be return if the lock can be canceled,
2993 * or zero returned for not
2995 static int mdc_cancel_weight(struct ldlm_lock *lock)
2997 if (lock->l_resource->lr_type != LDLM_IBITS)
3000 /* FIXME: if we ever get into a situation where there are too many
3001 * opened files with open locks on a single node, then we really
3002 * should replay these open locks to reget it */
3003 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
3009 static int mdc_resource_inode_free(struct ldlm_resource *res)
3011 if (res->lr_lvb_inode)
3012 res->lr_lvb_inode = NULL;
3017 struct ldlm_valblock_ops inode_lvbo = {
3018 .lvbo_free = mdc_resource_inode_free
3021 static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
3023 struct client_obd *cli = &obd->u.cli;
3027 OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
3028 if (!cli->cl_rpc_lock)
3030 mdc_init_rpc_lock(cli->cl_rpc_lock);
3032 rc = ptlrpcd_addref();
3034 GOTO(err_rpc_lock, rc);
3036 OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
3037 if (!cli->cl_close_lock)
3038 GOTO(err_ptlrpcd_decref, rc = -ENOMEM);
3039 mdc_init_rpc_lock(cli->cl_close_lock);
3041 rc = client_obd_setup(obd, cfg);
3043 GOTO(err_close_lock, rc);
3045 obd->obd_vars = lprocfs_mdc_obd_vars;
3046 lprocfs_seq_obd_setup(obd);
3047 lprocfs_alloc_md_stats(obd, 0);
3049 sptlrpc_lprocfs_cliobd_attach(obd);
3050 ptlrpc_lprocfs_register_obd(obd);
3052 ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
3054 obd->obd_namespace->ns_lvbo = &inode_lvbo;
3056 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
3059 CERROR("failed to setup llogging subsystems\n");
3065 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
3069 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
3073 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
3074 * us to make MDS RPCs with large enough reply buffers to hold a default
3075 * sized EA and cookie without having to calculate this (via a call into the
3076 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
3077 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
3078 * a large number of stripes is possible. If a larger reply buffer is
3079 * required it will be reallocated in the ptlrpc layer due to overflow.
3081 static int mdc_init_ea_size(struct obd_export *exp, int easize,
3082 int def_easize, int cookiesize, int def_cookiesize)
3084 struct obd_device *obd = exp->exp_obd;
3085 struct client_obd *cli = &obd->u.cli;
3088 if (cli->cl_max_mds_easize < easize)
3089 cli->cl_max_mds_easize = easize;
3091 if (cli->cl_default_mds_easize < def_easize)
3092 cli->cl_default_mds_easize = def_easize;
3094 if (cli->cl_max_mds_cookiesize < cookiesize)
3095 cli->cl_max_mds_cookiesize = cookiesize;
3097 if (cli->cl_default_mds_cookiesize < def_cookiesize)
3098 cli->cl_default_mds_cookiesize = def_cookiesize;
3103 static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3109 case OBD_CLEANUP_EARLY:
3111 case OBD_CLEANUP_EXPORTS:
3112 /* Failsafe, ok if racy */
3113 if (obd->obd_type->typ_refcnt <= 1)
3114 libcfs_kkuc_group_rem(0, KUC_GRP_HSM, NULL);
3116 obd_cleanup_client_import(obd);
3117 ptlrpc_lprocfs_unregister_obd(obd);
3118 lprocfs_obd_cleanup(obd);
3119 lprocfs_free_md_stats(obd);
3121 rc = obd_llog_finish(obd, 0);
3123 CERROR("failed to cleanup llogging subsystems\n");
3129 static int mdc_cleanup(struct obd_device *obd)
3131 struct client_obd *cli = &obd->u.cli;
3133 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
3134 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
3138 return client_obd_cleanup(obd);
3142 static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3143 struct obd_device *tgt, int *index)
3145 struct llog_ctxt *ctxt;
3150 LASSERT(olg == &obd->obd_olg);
3152 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, tgt,
3157 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
3158 llog_initiator_connect(ctxt);
3159 llog_ctxt_put(ctxt);
3164 static int mdc_llog_finish(struct obd_device *obd, int count)
3166 struct llog_ctxt *ctxt;
3170 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
3172 llog_cleanup(NULL, ctxt);
3177 static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
3179 struct lustre_cfg *lcfg = buf;
3180 int rc = class_process_proc_seq_param(PARAM_MDC, obd->obd_vars,
3182 return (rc > 0 ? 0: rc);
3186 /* get remote permission for current user on fid */
3187 int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
3188 struct obd_capa *oc, __u32 suppgid,
3189 struct ptlrpc_request **request)
3191 struct ptlrpc_request *req;
3195 LASSERT(client_is_remote(exp));
3198 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
3202 mdc_set_capa_size(req, &RMF_CAPA1, oc);
3204 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
3206 ptlrpc_request_free(req);
3210 mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
3212 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
3213 sizeof(struct mdt_remote_perm));
3215 ptlrpc_request_set_replen(req);
3217 rc = ptlrpc_queue_wait(req);
3219 ptlrpc_req_finished(req);
3225 static int mdc_interpret_renew_capa(const struct lu_env *env,
3226 struct ptlrpc_request *req, void *args,
3229 struct mdc_renew_capa_args *ra = args;
3230 struct mdt_body *body = NULL;
3231 struct lustre_capa *capa;
3235 GOTO(out, capa = ERR_PTR(status));
3237 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
3239 GOTO(out, capa = ERR_PTR(-EFAULT));
3241 if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
3242 GOTO(out, capa = ERR_PTR(-ENOENT));
3244 capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
3246 GOTO(out, capa = ERR_PTR(-EFAULT));
3249 ra->ra_cb(ra->ra_oc, capa);
3253 static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
3256 struct ptlrpc_request *req;
3257 struct mdc_renew_capa_args *ra;
3260 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
3261 LUSTRE_MDS_VERSION, MDS_GETATTR);
3265 /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
3266 * capa to renew is oss capa.
3268 mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
3269 ptlrpc_request_set_replen(req);
3271 CLASSERT(sizeof(*ra) <= sizeof(req->rq_async_args));
3272 ra = ptlrpc_req_async_args(req);
3275 req->rq_interpret_reply = mdc_interpret_renew_capa;
3276 ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
3280 struct obd_ops mdc_obd_ops = {
3281 .o_owner = THIS_MODULE,
3282 .o_setup = mdc_setup,
3283 .o_precleanup = mdc_precleanup,
3284 .o_cleanup = mdc_cleanup,
3285 .o_add_conn = client_import_add_conn,
3286 .o_del_conn = client_import_del_conn,
3287 .o_connect = client_connect_import,
3288 .o_disconnect = client_disconnect_export,
3289 .o_iocontrol = mdc_iocontrol,
3290 .o_set_info_async = mdc_set_info_async,
3291 .o_statfs = mdc_statfs,
3292 .o_fid_init = client_fid_init,
3293 .o_fid_fini = client_fid_fini,
3294 .o_fid_alloc = mdc_fid_alloc,
3295 .o_import_event = mdc_import_event,
3296 .o_llog_init = mdc_llog_init,
3297 .o_llog_finish = mdc_llog_finish,
3298 .o_get_info = mdc_get_info,
3299 .o_process_config = mdc_process_config,
3300 .o_get_uuid = mdc_get_uuid,
3301 .o_quotactl = mdc_quotactl,
3302 .o_quotacheck = mdc_quotacheck
3305 struct md_ops mdc_md_ops = {
3306 .m_getstatus = mdc_getstatus,
3307 .m_null_inode = mdc_null_inode,
3308 .m_find_cbdata = mdc_find_cbdata,
3309 .m_close = mdc_close,
3310 .m_create = mdc_create,
3311 .m_done_writing = mdc_done_writing,
3312 .m_enqueue = mdc_enqueue,
3313 .m_getattr = mdc_getattr,
3314 .m_getattr_name = mdc_getattr_name,
3315 .m_intent_lock = mdc_intent_lock,
3317 .m_rename = mdc_rename,
3318 .m_setattr = mdc_setattr,
3319 .m_setxattr = mdc_setxattr,
3320 .m_getxattr = mdc_getxattr,
3321 .m_fsync = mdc_fsync,
3322 .m_read_entry = mdc_read_entry,
3323 .m_unlink = mdc_unlink,
3324 .m_cancel_unused = mdc_cancel_unused,
3325 .m_init_ea_size = mdc_init_ea_size,
3326 .m_set_lock_data = mdc_set_lock_data,
3327 .m_lock_match = mdc_lock_match,
3328 .m_get_lustre_md = mdc_get_lustre_md,
3329 .m_free_lustre_md = mdc_free_lustre_md,
3330 .m_set_open_replay_data = mdc_set_open_replay_data,
3331 .m_clear_open_replay_data = mdc_clear_open_replay_data,
3332 .m_renew_capa = mdc_renew_capa,
3333 .m_unpack_capa = mdc_unpack_capa,
3334 .m_get_remote_perm = mdc_get_remote_perm,
3335 .m_intent_getattr_async = mdc_intent_getattr_async,
3336 .m_revalidate_lock = mdc_revalidate_lock
3339 int __init mdc_init(void)
3341 return class_register_type(&mdc_obd_ops, &mdc_md_ops, true, NULL,
3342 #ifndef HAVE_ONLY_PROCFS_SEQ
3345 LUSTRE_MDC_NAME, NULL);
3349 static void /*__exit*/ mdc_exit(void)
3351 class_unregister_type(LUSTRE_MDC_NAME);
3354 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3355 MODULE_DESCRIPTION("Lustre Metadata Client");
3356 MODULE_LICENSE("GPL");
3358 module_init(mdc_init);
3359 module_exit(mdc_exit);