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_is_subdir(struct obd_export *exp,
317 const struct lu_fid *pfid,
318 const struct lu_fid *cfid,
319 struct ptlrpc_request **request)
321 struct ptlrpc_request *req;
327 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
328 &RQF_MDS_IS_SUBDIR, LUSTRE_MDS_VERSION,
333 mdc_is_subdir_pack(req, pfid, cfid, 0);
334 ptlrpc_request_set_replen(req);
336 rc = ptlrpc_queue_wait(req);
337 if (rc && rc != -EREMOTE)
338 ptlrpc_req_finished(req);
344 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
345 const struct lu_fid *fid,
346 struct obd_capa *oc, int opcode, obd_valid valid,
347 const char *xattr_name, const char *input,
348 int input_size, int output_size, int flags,
349 __u32 suppgid, struct ptlrpc_request **request)
351 struct ptlrpc_request *req;
352 int xattr_namelen = 0;
358 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
362 mdc_set_capa_size(req, &RMF_CAPA1, oc);
364 xattr_namelen = strlen(xattr_name) + 1;
365 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
370 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
374 /* Flush local XATTR locks to get rid of a possible cancel RPC */
375 if (opcode == MDS_REINT && fid_is_sane(fid) &&
376 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
377 struct list_head cancels = LIST_HEAD_INIT(cancels);
380 /* Without that packing would fail */
382 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
385 count = mdc_resource_get_unused(exp, fid,
387 MDS_INODELOCK_XATTR);
389 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
391 ptlrpc_request_free(req);
395 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
397 ptlrpc_request_free(req);
402 if (opcode == MDS_REINT) {
403 struct mdt_rec_setxattr *rec;
405 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
406 sizeof(struct mdt_rec_reint));
407 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
408 rec->sx_opcode = REINT_SETXATTR;
409 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
410 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
411 rec->sx_cap = cfs_curproc_cap_pack();
412 rec->sx_suppgid1 = suppgid;
413 rec->sx_suppgid2 = -1;
415 rec->sx_valid = valid | OBD_MD_FLCTIME;
416 rec->sx_time = cfs_time_current_sec();
417 rec->sx_size = output_size;
418 rec->sx_flags = flags;
420 mdc_pack_capa(req, &RMF_CAPA1, oc);
422 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
426 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
427 memcpy(tmp, xattr_name, xattr_namelen);
430 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
431 memcpy(tmp, input, input_size);
434 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
435 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
436 RCL_SERVER, output_size);
437 ptlrpc_request_set_replen(req);
440 if (opcode == MDS_REINT)
441 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
443 rc = ptlrpc_queue_wait(req);
445 if (opcode == MDS_REINT)
446 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
449 ptlrpc_req_finished(req);
455 int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
456 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
457 const char *input, int input_size, int output_size,
458 int flags, __u32 suppgid, struct ptlrpc_request **request)
460 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
461 fid, oc, MDS_REINT, valid, xattr_name,
462 input, input_size, output_size, flags,
466 int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
467 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
468 const char *input, int input_size, int output_size,
469 int flags, struct ptlrpc_request **request)
471 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
472 fid, oc, MDS_GETXATTR, valid, xattr_name,
473 input, input_size, output_size, flags,
477 #ifdef CONFIG_FS_POSIX_ACL
478 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
480 struct req_capsule *pill = &req->rq_pill;
481 struct mdt_body *body = md->body;
482 struct posix_acl *acl;
490 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize);
495 acl = posix_acl_from_xattr(&init_user_ns, buf, body->aclsize);
498 CERROR("convert xattr to acl: %d\n", rc);
502 rc = posix_acl_valid(acl);
504 CERROR("validate acl: %d\n", rc);
505 posix_acl_release(acl);
513 #define mdc_unpack_acl(req, md) 0
516 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
517 struct obd_export *dt_exp, struct obd_export *md_exp,
518 struct lustre_md *md)
520 struct req_capsule *pill = &req->rq_pill;
525 memset(md, 0, sizeof(*md));
527 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
528 LASSERT(md->body != NULL);
530 if (md->body->valid & OBD_MD_FLEASIZE) {
532 struct lov_mds_md *lmm;
534 if (!S_ISREG(md->body->mode)) {
535 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
536 "regular file, but is not\n");
537 GOTO(out, rc = -EPROTO);
540 if (md->body->eadatasize == 0) {
541 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
542 "but eadatasize 0\n");
543 GOTO(out, rc = -EPROTO);
545 lmmsize = md->body->eadatasize;
546 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
548 GOTO(out, rc = -EPROTO);
550 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
554 if (rc < sizeof(*md->lsm)) {
555 CDEBUG(D_INFO, "lsm size too small: "
556 "rc < sizeof (*md->lsm) (%d < %d)\n",
557 rc, (int)sizeof(*md->lsm));
558 GOTO(out, rc = -EPROTO);
561 } else if (md->body->valid & OBD_MD_FLDIREA) {
563 struct lov_mds_md *lmv;
565 if(!S_ISDIR(md->body->mode)) {
566 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
567 "directory, but is not\n");
568 GOTO(out, rc = -EPROTO);
571 if (md->body->eadatasize == 0) {
572 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
573 "but eadatasize 0\n");
576 if (md->body->valid & OBD_MD_MEA) {
577 lmvsize = md->body->eadatasize;
578 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
581 GOTO(out, rc = -EPROTO);
583 rc = obd_unpackmd(md_exp, (void *)&md->lmv, lmv,
588 if (rc < sizeof(*md->lmv)) {
589 CDEBUG(D_INFO, "size too small: "
590 "rc < sizeof(*md->lmv) (%d < %d)\n",
591 rc, (int)sizeof(*md->lmv));
592 GOTO(out, rc = -EPROTO);
598 if (md->body->valid & OBD_MD_FLRMTPERM) {
599 /* remote permission */
600 LASSERT(client_is_remote(exp));
601 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
602 lustre_swab_mdt_remote_perm);
603 if (!md->remote_perm)
604 GOTO(out, rc = -EPROTO);
606 else if (md->body->valid & OBD_MD_FLACL) {
607 /* for ACL, it's possible that FLACL is set but aclsize is zero.
608 * only when aclsize != 0 there's an actual segment for ACL
611 if (md->body->aclsize) {
612 rc = mdc_unpack_acl(req, md);
615 #ifdef CONFIG_FS_POSIX_ACL
617 md->posix_acl = NULL;
621 if (md->body->valid & OBD_MD_FLMDSCAPA) {
622 struct obd_capa *oc = NULL;
624 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc);
630 if (md->body->valid & OBD_MD_FLOSSCAPA) {
631 struct obd_capa *oc = NULL;
633 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc);
643 capa_put(md->oss_capa);
647 capa_put(md->mds_capa);
650 #ifdef CONFIG_FS_POSIX_ACL
651 posix_acl_release(md->posix_acl);
654 obd_free_memmd(dt_exp, &md->lsm);
659 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
666 * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING
669 void mdc_replay_open(struct ptlrpc_request *req)
671 struct md_open_data *mod = req->rq_cb_data;
672 struct ptlrpc_request *close_req;
673 struct obd_client_handle *och;
674 struct lustre_handle old;
675 struct mdt_body *body;
679 DEBUG_REQ(D_ERROR, req,
680 "Can't properly replay without open data.");
685 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
686 LASSERT(body != NULL);
690 struct lustre_handle *file_fh;
692 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
694 file_fh = &och->och_fh;
695 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
696 file_fh->cookie, body->handle.cookie);
698 *file_fh = body->handle;
700 close_req = mod->mod_close_req;
701 if (close_req != NULL) {
702 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
703 struct mdt_ioepoch *epoch;
705 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING);
706 epoch = req_capsule_client_get(&close_req->rq_pill,
711 LASSERT(!memcmp(&old, &epoch->handle, sizeof(old)));
712 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
713 epoch->handle = body->handle;
718 void mdc_commit_open(struct ptlrpc_request *req)
720 struct md_open_data *mod = req->rq_cb_data;
725 * No need to touch md_open_data::mod_och, it holds a reference on
726 * \var mod and will zero references to each other, \var mod will be
727 * freed after that when md_open_data::mod_och will put the reference.
731 * Do not let open request to disappear as it still may be needed
732 * for close rpc to happen (it may happen on evict only, otherwise
733 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
734 * called), just mark this rpc as committed to distinguish these 2
735 * cases, see mdc_close() for details. The open request reference will
736 * be put along with freeing \var mod.
738 ptlrpc_request_addref(req);
739 spin_lock(&req->rq_lock);
740 req->rq_committed = 1;
741 spin_unlock(&req->rq_lock);
742 req->rq_cb_data = NULL;
746 int mdc_set_open_replay_data(struct obd_export *exp,
747 struct obd_client_handle *och,
748 struct lookup_intent *it)
750 struct md_open_data *mod;
751 struct mdt_rec_create *rec;
752 struct mdt_body *body;
753 struct ptlrpc_request *open_req = it->d.lustre.it_data;
754 struct obd_import *imp = open_req->rq_import;
757 if (!open_req->rq_replay)
760 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
761 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
762 LASSERT(rec != NULL);
763 /* Incoming message in my byte order (it's been swabbed). */
764 /* Outgoing messages always in my byte order. */
765 LASSERT(body != NULL);
767 /* Only if the import is replayable, we set replay_open data */
768 if (och && imp->imp_replayable) {
769 mod = obd_mod_alloc();
771 DEBUG_REQ(D_ERROR, open_req,
772 "Can't allocate md_open_data");
777 * Take a reference on \var mod, to be freed on mdc_close().
778 * It protects \var mod from being freed on eviction (commit
779 * callback is called despite rq_replay flag).
780 * Another reference for \var och.
785 spin_lock(&open_req->rq_lock);
788 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
789 it_disposition(it, DISP_OPEN_STRIPE);
790 mod->mod_open_req = open_req;
791 open_req->rq_cb_data = mod;
792 open_req->rq_commit_cb = mdc_commit_open;
793 spin_unlock(&open_req->rq_lock);
796 rec->cr_fid2 = body->fid1;
797 rec->cr_ioepoch = body->ioepoch;
798 rec->cr_old_handle.cookie = body->handle.cookie;
799 open_req->rq_replay_cb = mdc_replay_open;
800 if (!fid_is_sane(&body->fid1)) {
801 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
806 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
810 static void mdc_free_open(struct md_open_data *mod)
814 if (mod->mod_is_create == 0 &&
815 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
818 LASSERT(mod->mod_open_req->rq_replay == 0);
820 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "free open request\n");
822 ptlrpc_request_committed(mod->mod_open_req, committed);
823 if (mod->mod_close_req)
824 ptlrpc_request_committed(mod->mod_close_req, committed);
827 int mdc_clear_open_replay_data(struct obd_export *exp,
828 struct obd_client_handle *och)
830 struct md_open_data *mod = och->och_mod;
834 * It is possible to not have \var mod in a case of eviction between
835 * lookup and ll_file_open().
840 LASSERT(mod != LP_POISON);
841 LASSERT(mod->mod_open_req != NULL);
851 /* Prepares the request for the replay by the given reply */
852 static void mdc_close_handle_reply(struct ptlrpc_request *req,
853 struct md_op_data *op_data, int rc) {
854 struct mdt_body *repbody;
855 struct mdt_ioepoch *epoch;
857 if (req && rc == -EAGAIN) {
858 repbody = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
859 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
861 epoch->flags |= MF_SOM_AU;
862 if (repbody->valid & OBD_MD_FLGETATTRLOCK)
863 op_data->op_flags |= MF_GETATTR_LOCK;
867 int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
868 struct md_open_data *mod, struct ptlrpc_request **request)
870 struct obd_device *obd = class_exp2obd(exp);
871 struct ptlrpc_request *req;
872 struct req_format *req_fmt;
877 req_fmt = &RQF_MDS_CLOSE;
878 if (op_data->op_bias & MDS_HSM_RELEASE) {
879 req_fmt = &RQF_MDS_RELEASE_CLOSE;
881 /* allocate a FID for volatile file */
882 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
884 CERROR("%s: "DFID" failed to allocate FID: %d\n",
885 obd->obd_name, PFID(&op_data->op_fid1), rc);
886 /* save the errcode and proceed to close */
892 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
896 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
898 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
900 ptlrpc_request_free(req);
904 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
905 * portal whose threads are not taking any DLM locks and are therefore
906 * always progressing */
907 req->rq_request_portal = MDS_READPAGE_PORTAL;
908 ptlrpc_at_set_req_timeout(req);
910 /* Ensure that this close's handle is fixed up during replay. */
911 if (likely(mod != NULL)) {
912 LASSERTF(mod->mod_open_req != NULL &&
913 mod->mod_open_req->rq_type != LI_POISON,
914 "POISONED open %p!\n", mod->mod_open_req);
916 mod->mod_close_req = req;
918 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
919 /* We no longer want to preserve this open for replay even
920 * though the open was committed. b=3632, b=3633 */
921 spin_lock(&mod->mod_open_req->rq_lock);
922 mod->mod_open_req->rq_replay = 0;
923 spin_unlock(&mod->mod_open_req->rq_lock);
925 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
928 mdc_close_pack(req, op_data);
930 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
931 obd->u.cli.cl_default_mds_easize);
932 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
933 obd->u.cli.cl_default_mds_cookiesize);
935 ptlrpc_request_set_replen(req);
937 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
938 rc = ptlrpc_queue_wait(req);
939 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
941 if (req->rq_repmsg == NULL) {
942 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
945 rc = req->rq_status ?: -EIO;
946 } else if (rc == 0 || rc == -EAGAIN) {
947 struct mdt_body *body;
949 rc = lustre_msg_get_status(req->rq_repmsg);
950 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
951 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
956 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
959 } else if (rc == -ESTALE) {
961 * it can be allowed error after 3633 if open was committed and
962 * server failed before close was sent. Let's check if mod
963 * exists and return no error in that case
966 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
967 LASSERT(mod->mod_open_req != NULL);
968 if (mod->mod_open_req->rq_committed)
975 mod->mod_close_req = NULL;
976 /* Since now, mod is accessed through open_req only,
977 * thus close req does not keep a reference on mod anymore. */
981 mdc_close_handle_reply(req, op_data, rc);
982 RETURN(rc < 0 ? rc : saved_rc);
985 int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
986 struct md_open_data *mod)
988 struct obd_device *obd = class_exp2obd(exp);
989 struct ptlrpc_request *req;
993 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
994 &RQF_MDS_DONE_WRITING);
998 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
999 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
1001 ptlrpc_request_free(req);
1006 LASSERTF(mod->mod_open_req != NULL &&
1007 mod->mod_open_req->rq_type != LI_POISON,
1008 "POISONED setattr %p!\n", mod->mod_open_req);
1010 mod->mod_close_req = req;
1011 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr");
1012 /* We no longer want to preserve this setattr for replay even
1013 * though the open was committed. b=3632, b=3633 */
1014 spin_lock(&mod->mod_open_req->rq_lock);
1015 mod->mod_open_req->rq_replay = 0;
1016 spin_unlock(&mod->mod_open_req->rq_lock);
1019 mdc_close_pack(req, op_data);
1020 ptlrpc_request_set_replen(req);
1022 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
1023 rc = ptlrpc_queue_wait(req);
1024 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
1026 if (rc == -ESTALE) {
1028 * it can be allowed error after 3633 if open or setattr were
1029 * committed and server failed before close was sent.
1030 * Let's check if mod exists and return no error in that case
1033 LASSERT(mod->mod_open_req != NULL);
1034 if (mod->mod_open_req->rq_committed)
1041 mod->mod_close_req = NULL;
1042 LASSERT(mod->mod_open_req != NULL);
1045 /* Since now, mod is accessed through setattr req only,
1046 * thus DW req does not keep a reference on mod anymore. */
1050 mdc_close_handle_reply(req, op_data, rc);
1051 ptlrpc_req_finished(req);
1055 #ifdef HAVE_SPLIT_SUPPORT
1056 int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid,
1057 const struct page *page, int offset)
1059 struct ptlrpc_request *req;
1060 struct ptlrpc_bulk_desc *desc;
1064 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_WRITEPAGE);
1068 /* FIXME: capa doesn't support split yet */
1069 mdc_set_capa_size(req, &RMF_CAPA1, NULL);
1071 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_WRITEPAGE);
1073 ptlrpc_request_free(req);
1077 req->rq_request_portal = MDS_READPAGE_PORTAL;
1078 ptlrpc_at_set_req_timeout(req);
1080 desc = ptlrpc_prep_bulk_imp(req, 1, 1,BULK_GET_SOURCE, MDS_BULK_PORTAL);
1082 GOTO(out, rc = -ENOMEM);
1084 /* NB req now owns desc and will free it when it gets freed. */
1085 ptlrpc_prep_bulk_page(desc, (struct page *)page, 0, offset);
1086 mdc_readdir_pack(req, 0, offset, fid, NULL);
1088 ptlrpc_request_set_replen(req);
1089 rc = ptlrpc_queue_wait(req);
1093 rc = sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk);
1095 ptlrpc_req_finished(req);
1098 EXPORT_SYMBOL(mdc_sendpage);
1101 static int mdc_getpage(struct obd_export *exp, const struct lu_fid *fid,
1102 __u64 offset, struct obd_capa *oc,
1103 struct page **pages, int npages,
1104 struct ptlrpc_request **request)
1106 struct ptlrpc_request *req;
1107 struct ptlrpc_bulk_desc *desc;
1109 wait_queue_head_t waitq;
1111 struct l_wait_info lwi;
1116 init_waitqueue_head(&waitq);
1119 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1123 mdc_set_capa_size(req, &RMF_CAPA1, oc);
1125 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1127 ptlrpc_request_free(req);
1131 req->rq_request_portal = MDS_READPAGE_PORTAL;
1132 ptlrpc_at_set_req_timeout(req);
1134 desc = ptlrpc_prep_bulk_imp(req, npages, 1, BULK_PUT_SINK,
1137 ptlrpc_request_free(req);
1141 /* NB req now owns desc and will free it when it gets freed */
1142 for (i = 0; i < npages; i++)
1143 ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE);
1145 mdc_readdir_pack(req, offset, PAGE_CACHE_SIZE * npages, fid, oc);
1147 ptlrpc_request_set_replen(req);
1148 rc = ptlrpc_queue_wait(req);
1150 ptlrpc_req_finished(req);
1151 if (rc != -ETIMEDOUT)
1155 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1156 CERROR("%s: too many resend retries: rc = %d\n",
1157 exp->exp_obd->obd_name, -EIO);
1160 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1162 l_wait_event(waitq, 0, &lwi);
1167 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1168 req->rq_bulk->bd_nob_transferred);
1170 ptlrpc_req_finished(req);
1174 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1175 CERROR("%s: unexpected bytes transferred: %d (%ld expected)\n",
1176 exp->exp_obd->obd_name, req->rq_bulk->bd_nob_transferred,
1177 PAGE_CACHE_SIZE * npages);
1178 ptlrpc_req_finished(req);
1187 static void mdc_release_page(struct page *page, int remove)
1191 if (likely(page->mapping != NULL))
1192 truncate_complete_page(page->mapping, page);
1195 page_cache_release(page);
1198 static struct page *mdc_page_locate(struct address_space *mapping, __u64 *hash,
1199 __u64 *start, __u64 *end, int hash64)
1202 * Complement of hash is used as an index so that
1203 * radix_tree_gang_lookup() can be used to find a page with starting
1204 * hash _smaller_ than one we are looking for.
1206 unsigned long offset = hash_x_index(*hash, hash64);
1210 spin_lock_irq(&mapping->tree_lock);
1211 found = radix_tree_gang_lookup(&mapping->page_tree,
1212 (void **)&page, offset, 1);
1214 struct lu_dirpage *dp;
1216 page_cache_get(page);
1217 spin_unlock_irq(&mapping->tree_lock);
1219 * In contrast to find_lock_page() we are sure that directory
1220 * page cannot be truncated (while DLM lock is held) and,
1221 * hence, can avoid restart.
1223 * In fact, page cannot be locked here at all, because
1224 * mdc_read_page_remote does synchronous io.
1226 wait_on_page_locked(page);
1227 if (PageUptodate(page)) {
1229 if (BITS_PER_LONG == 32 && hash64) {
1230 *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1231 *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1232 *hash = *hash >> 32;
1234 *start = le64_to_cpu(dp->ldp_hash_start);
1235 *end = le64_to_cpu(dp->ldp_hash_end);
1237 if (unlikely(*start == 1 && *hash == 0))
1240 LASSERTF(*start <= *hash, "start = "LPX64
1241 ",end = "LPX64",hash = "LPX64"\n",
1242 *start, *end, *hash);
1243 CDEBUG(D_VFSTRACE, "page%lu [%llu %llu], hash"LPU64"\n",
1244 offset, *start, *end, *hash);
1247 mdc_release_page(page, 0);
1249 } else if (*end != *start && *hash == *end) {
1251 * upon hash collision, remove this page,
1252 * otherwise put page reference, and
1253 * ll_get_dir_page() will issue RPC to fetch
1257 mdc_release_page(page,
1258 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1262 page_cache_release(page);
1263 page = ERR_PTR(-EIO);
1266 spin_unlock_irq(&mapping->tree_lock);
1273 * Adjust a set of pages, each page containing an array of lu_dirpages,
1274 * so that each page can be used as a single logical lu_dirpage.
1276 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
1277 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
1278 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
1279 * value is used as a cookie to request the next lu_dirpage in a
1280 * directory listing that spans multiple pages (two in this example):
1283 * .|--------v------- -----.
1284 * |s|e|f|p|ent|ent| ... |ent|
1285 * '--|-------------- -----' Each CFS_PAGE contains a single
1286 * '------. lu_dirpage.
1287 * .---------v------- -----.
1288 * |s|e|f|p|ent| 0 | ... | 0 |
1289 * '----------------- -----'
1291 * However, on hosts where the native VM page size (PAGE_CACHE_SIZE) is
1292 * larger than LU_PAGE_SIZE, a single host page may contain multiple
1293 * lu_dirpages. After reading the lu_dirpages from the MDS, the
1294 * ldp_hash_end of the first lu_dirpage refers to the one immediately
1295 * after it in the same CFS_PAGE (arrows simplified for brevity, but
1296 * in general e0==s1, e1==s2, etc.):
1298 * .-------------------- -----.
1299 * |s0|e0|f0|p|ent|ent| ... |ent|
1300 * |---v---------------- -----|
1301 * |s1|e1|f1|p|ent|ent| ... |ent|
1302 * |---v---------------- -----| Here, each CFS_PAGE contains
1303 * ... multiple lu_dirpages.
1304 * |---v---------------- -----|
1305 * |s'|e'|f'|p|ent|ent| ... |ent|
1306 * '---|---------------- -----'
1308 * .----------------------------.
1311 * This structure is transformed into a single logical lu_dirpage as follows:
1313 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
1314 * labeled 'next CFS_PAGE'.
1316 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
1317 * a hash collision with the next page exists.
1319 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
1320 * to the first entry of the next lu_dirpage.
1322 #if PAGE_CACHE_SIZE > LU_PAGE_SIZE
1323 static void mdc_adjust_dirpages(struct page **pages, int cfs_pgs, int lu_pgs)
1327 for (i = 0; i < cfs_pgs; i++) {
1328 struct lu_dirpage *dp = kmap(pages[i]);
1329 struct lu_dirpage *first = dp;
1330 struct lu_dirent *end_dirent = NULL;
1331 struct lu_dirent *ent;
1332 __u64 hash_end = le64_to_cpu(dp->ldp_hash_end);
1333 __u32 flags = le32_to_cpu(dp->ldp_flags);
1335 while (--lu_pgs > 0) {
1336 ent = lu_dirent_start(dp);
1337 for (end_dirent = ent; ent != NULL;
1338 end_dirent = ent, ent = lu_dirent_next(ent));
1340 /* Advance dp to next lu_dirpage. */
1341 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
1343 /* Check if we've reached the end of the CFS_PAGE. */
1344 if (!((unsigned long)dp & ~CFS_PAGE_MASK))
1347 /* Save the hash and flags of this lu_dirpage. */
1348 hash_end = le64_to_cpu(dp->ldp_hash_end);
1349 flags = le32_to_cpu(dp->ldp_flags);
1351 /* Check if lu_dirpage contains no entries. */
1352 if (end_dirent == NULL)
1355 /* Enlarge the end entry lde_reclen from 0 to
1356 * first entry of next lu_dirpage. */
1357 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
1358 end_dirent->lde_reclen =
1359 cpu_to_le16((char *)(dp->ldp_entries) -
1360 (char *)end_dirent);
1363 first->ldp_hash_end = hash_end;
1364 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
1365 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
1369 LASSERTF(lu_pgs == 0, "left = %d", lu_pgs);
1372 #define mdc_adjust_dirpages(pages, cfs_pgs, lu_pgs) do {} while (0)
1373 #endif /* PAGE_CACHE_SIZE > LU_PAGE_SIZE */
1375 /* parameters for readdir page */
1376 struct readpage_param {
1377 struct md_op_data *rp_mod;
1380 struct obd_export *rp_exp;
1381 struct md_callback *rp_cb;
1385 * Read pages from server.
1387 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
1388 * a header lu_dirpage which describes the start/end hash, and whether this
1389 * page is empty (contains no dir entry) or hash collide with next page.
1390 * After client receives reply, several pages will be integrated into dir page
1391 * in CFS_PAGE_SIZE (if CFS_PAGE_SIZE greater than LU_PAGE_SIZE), and the
1392 * lu_dirpage for this integrated page will be adjusted.
1394 static int mdc_read_page_remote(void *data, struct page *page0)
1396 struct readpage_param *rp = data;
1397 struct page **page_pool;
1399 struct lu_dirpage *dp;
1400 int rd_pgs = 0; /* number of pages read actually */
1402 struct md_op_data *op_data = rp->rp_mod;
1403 struct ptlrpc_request *req;
1404 int max_pages = op_data->op_max_pages;
1405 struct inode *inode;
1411 LASSERT(max_pages > 0 && max_pages <= PTLRPC_MAX_BRW_PAGES);
1412 if (op_data->op_mea1 != NULL) {
1413 __u32 index = op_data->op_stripe_offset;
1415 inode = op_data->op_mea1->lsm_md_oinfo[index].lmo_root;
1416 fid = &op_data->op_mea1->lsm_md_oinfo[index].lmo_fid;
1418 inode = op_data->op_data;
1419 fid = &op_data->op_fid1;
1421 LASSERT(inode != NULL);
1423 OBD_ALLOC(page_pool, sizeof(page_pool[0]) * max_pages);
1424 if (page_pool != NULL) {
1425 page_pool[0] = page0;
1431 for (npages = 1; npages < max_pages; npages++) {
1432 page = page_cache_alloc_cold(inode->i_mapping);
1435 page_pool[npages] = page;
1438 rc = mdc_getpage(rp->rp_exp, fid, rp->rp_off, op_data->op_capa1,
1439 page_pool, npages, &req);
1443 rd_pgs = (req->rq_bulk->bd_nob_transferred +
1444 PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
1445 lu_pgs = req->rq_bulk->bd_nob_transferred >>
1447 LASSERT(!(req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
1449 CDEBUG(D_INODE, "read %d(%d)/%d pages\n", rd_pgs, lu_pgs,
1450 op_data->op_npages);
1452 mdc_adjust_dirpages(page_pool, rd_pgs, lu_pgs);
1454 SetPageUptodate(page0);
1458 ptlrpc_req_finished(req);
1459 CDEBUG(D_CACHE, "read %d/%d pages\n", rd_pgs, npages);
1460 for (i = 1; i < npages; i++) {
1461 unsigned long offset;
1465 page = page_pool[i];
1467 if (rc < 0 || i >= rd_pgs) {
1468 page_cache_release(page);
1472 SetPageUptodate(page);
1475 hash = le64_to_cpu(dp->ldp_hash_start);
1478 offset = hash_x_index(hash, rp->rp_hash64);
1480 prefetchw(&page->flags);
1481 ret = add_to_page_cache_lru(page, inode->i_mapping, offset,
1486 CDEBUG(D_VFSTRACE, "page %lu add to page cache failed:"
1487 " rc = %d\n", offset, ret);
1488 page_cache_release(page);
1491 if (page_pool != &page0)
1492 OBD_FREE(page_pool, sizeof(page_pool[0]) * max_pages);
1498 * Read dir page from cache first, if it can not find it, read it from
1499 * server and add into the cache.
1501 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1502 struct md_callback *cb_op, struct page **ppage)
1504 struct lookup_intent it = { .it_op = IT_READDIR };
1506 struct inode *dir = NULL;
1507 struct address_space *mapping;
1508 struct lu_dirpage *dp;
1511 struct lustre_handle lockh;
1512 struct ptlrpc_request *enq_req = NULL;
1513 struct readpage_param rp_param;
1520 if (op_data->op_mea1 != NULL) {
1521 __u32 index = op_data->op_stripe_offset;
1523 dir = op_data->op_mea1->lsm_md_oinfo[index].lmo_root;
1525 dir = op_data->op_data;
1527 LASSERT(dir != NULL);
1529 mapping = dir->i_mapping;
1531 rc = mdc_intent_lock(exp, op_data, &it, &enq_req,
1532 cb_op->md_blocking_ast, 0);
1533 if (enq_req != NULL)
1534 ptlrpc_req_finished(enq_req);
1537 CERROR("%s: "DFID" lock enqueue fails: rc = %d\n",
1538 exp->exp_obd->obd_name, PFID(&op_data->op_fid1), rc);
1543 mdc_set_lock_data(exp, &it.d.lustre.it_lock_handle, dir, NULL);
1545 rp_param.rp_off = op_data->op_hash_offset;
1546 rp_param.rp_hash64 = op_data->op_cli_flags & CLI_HASH64;
1547 page = mdc_page_locate(mapping, &rp_param.rp_off, &start, &end,
1548 rp_param.rp_hash64);
1550 CERROR("%s: dir page locate: "DFID" at "LPU64": rc %ld\n",
1551 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1552 rp_param.rp_off, PTR_ERR(page));
1553 GOTO(out_unlock, rc = PTR_ERR(page));
1554 } else if (page != NULL) {
1556 * XXX nikita: not entirely correct handling of a corner case:
1557 * suppose hash chain of entries with hash value HASH crosses
1558 * border between pages P0 and P1. First both P0 and P1 are
1559 * cached, seekdir() is called for some entry from the P0 part
1560 * of the chain. Later P0 goes out of cache. telldir(HASH)
1561 * happens and finds P1, as it starts with matching hash
1562 * value. Remaining entries from P0 part of the chain are
1563 * skipped. (Is that really a bug?)
1565 * Possible solutions: 0. don't cache P1 is such case, handle
1566 * it as an "overflow" page. 1. invalidate all pages at
1567 * once. 2. use HASH|1 as an index for P1.
1569 GOTO(hash_collision, page);
1572 rp_param.rp_exp = exp;
1573 rp_param.rp_mod = op_data;
1574 page = read_cache_page(mapping,
1575 hash_x_index(rp_param.rp_off,
1576 rp_param.rp_hash64),
1577 mdc_read_page_remote, &rp_param);
1579 CERROR("%s: read cache page: "DFID" at "LPU64": rc %ld\n",
1580 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1581 rp_param.rp_off, PTR_ERR(page));
1582 GOTO(out_unlock, rc = PTR_ERR(page));
1585 wait_on_page_locked(page);
1587 if (!PageUptodate(page)) {
1588 CERROR("%s: page not updated: "DFID" at "LPU64": rc %d\n",
1589 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1590 rp_param.rp_off, -5);
1593 if (!PageChecked(page))
1594 SetPageChecked(page);
1595 if (PageError(page)) {
1596 CERROR("%s: page error: "DFID" at "LPU64": rc %d\n",
1597 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1598 rp_param.rp_off, -5);
1603 dp = page_address(page);
1604 if (BITS_PER_LONG == 32 && rp_param.rp_hash64) {
1605 start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1606 end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1607 rp_param.rp_off = op_data->op_hash_offset >> 32;
1609 start = le64_to_cpu(dp->ldp_hash_start);
1610 end = le64_to_cpu(dp->ldp_hash_end);
1611 rp_param.rp_off = op_data->op_hash_offset;
1614 LASSERT(start == rp_param.rp_off);
1615 CWARN("Page-wide hash collision: %#lx\n", (unsigned long)end);
1616 #if BITS_PER_LONG == 32
1617 CWARN("Real page-wide hash collision at ["LPU64" "LPU64"] with "
1618 "hash "LPU64"\n", le64_to_cpu(dp->ldp_hash_start),
1619 le64_to_cpu(dp->ldp_hash_end), op_data->op_hash_offset);
1623 * Fetch whole overflow chain...
1631 lockh.cookie = it.d.lustre.it_lock_handle;
1632 ldlm_lock_decref(&lockh, it.d.lustre.it_lock_mode);
1633 it.d.lustre.it_lock_handle = 0;
1637 mdc_release_page(page, 1);
1643 * Read one directory entry from the cache.
1645 int mdc_read_entry(struct obd_export *exp, struct md_op_data *op_data,
1646 struct md_callback *cb_op, struct lu_dirent **entp,
1647 struct page **ppage)
1649 struct page *page = NULL;
1650 struct lu_dirpage *dp;
1651 struct lu_dirent *ent;
1655 CDEBUG(D_INFO, DFID "offset = "LPU64"\n", PFID(&op_data->op_fid1),
1656 op_data->op_hash_offset);
1661 if (op_data->op_hash_offset == MDS_DIR_END_OFF)
1664 rc = mdc_read_page(exp, op_data, cb_op, &page);
1668 dp = page_address(page);
1669 for (ent = lu_dirent_start(dp); ent != NULL;
1670 ent = lu_dirent_next(ent)) {
1671 /* Skip dummy entry */
1672 if (le16_to_cpu(ent->lde_namelen) == 0)
1675 if (le64_to_cpu(ent->lde_hash) > op_data->op_hash_offset)
1679 /* If it can not find entry in current page, try next page. */
1681 __u64 orig_offset = op_data->op_hash_offset;
1683 if (le64_to_cpu(dp->ldp_hash_end) == MDS_DIR_END_OFF) {
1684 mdc_release_page(page, 0);
1688 op_data->op_hash_offset = le64_to_cpu(dp->ldp_hash_end);
1689 mdc_release_page(page,
1690 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1691 rc = mdc_read_page(exp, op_data, cb_op, &page);
1696 dp = page_address(page);
1697 ent = lu_dirent_start(dp);
1700 op_data->op_hash_offset = orig_offset;
1709 #else /* __KERNEL__ */
1712 *mdc_read_page_remote(struct obd_export *exp, const struct lmv_oinfo *lmo,
1713 const __u64 hash, struct obd_capa *oc)
1715 struct ptlrpc_request *req = NULL;
1719 OBD_PAGE_ALLOC(page, 0);
1721 return ERR_PTR(-ENOMEM);
1723 rc = mdc_getpage(exp, &lmo->lmo_fid, hash, oc, &page, 1, &req);
1725 ptlrpc_req_finished(req);
1728 OBD_PAGE_FREE(page);
1735 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1736 struct md_callback *cb_op,
1737 struct page **ppage)
1740 struct lmv_oinfo *lmo;
1743 /* No local cache for liblustre, always read entry remotely */
1744 lmo = &op_data->op_mea1->lsm_md_oinfo[op_data->op_stripe_offset];
1745 page = mdc_read_page_remote(exp, lmo, op_data->op_hash_offset,
1748 return PTR_ERR(page);
1755 int mdc_read_entry(struct obd_export *exp, struct md_op_data *op_data,
1756 struct md_callback *cb_op, struct lu_dirent **entp,
1757 struct page **ppage)
1759 struct page *page = NULL;
1760 struct lu_dirpage *dp;
1761 struct lu_dirent *ent;
1765 rc = mdc_read_page(exp, op_data, cb_op, &page);
1769 dp = page_address(page);
1770 if (le64_to_cpu(dp->ldp_hash_end) < op_data->op_hash_offset)
1771 GOTO(out, *entp = NULL);
1773 for (ent = lu_dirent_start(dp); ent != NULL;
1774 ent = lu_dirent_next(ent))
1775 if (le64_to_cpu(ent->lde_hash) >= op_data->op_hash_offset)
1780 OBD_PAGE_FREE(page);
1786 static int mdc_statfs(const struct lu_env *env,
1787 struct obd_export *exp, struct obd_statfs *osfs,
1788 __u64 max_age, __u32 flags)
1790 struct obd_device *obd = class_exp2obd(exp);
1791 struct ptlrpc_request *req;
1792 struct obd_statfs *msfs;
1793 struct obd_import *imp = NULL;
1798 * Since the request might also come from lprocfs, so we need
1799 * sync this with client_disconnect_export Bug15684
1801 down_read(&obd->u.cli.cl_sem);
1802 if (obd->u.cli.cl_import)
1803 imp = class_import_get(obd->u.cli.cl_import);
1804 up_read(&obd->u.cli.cl_sem);
1808 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1809 LUSTRE_MDS_VERSION, MDS_STATFS);
1811 GOTO(output, rc = -ENOMEM);
1813 ptlrpc_request_set_replen(req);
1815 if (flags & OBD_STATFS_NODELAY) {
1816 /* procfs requests not want stay in wait for avoid deadlock */
1817 req->rq_no_resend = 1;
1818 req->rq_no_delay = 1;
1821 rc = ptlrpc_queue_wait(req);
1823 /* check connection error first */
1824 if (imp->imp_connect_error)
1825 rc = imp->imp_connect_error;
1829 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1831 GOTO(out, rc = -EPROTO);
1836 ptlrpc_req_finished(req);
1838 class_import_put(imp);
1842 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1844 __u32 keylen, vallen;
1848 if (gf->gf_pathlen > PATH_MAX)
1849 RETURN(-ENAMETOOLONG);
1850 if (gf->gf_pathlen < 2)
1853 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1854 keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
1855 OBD_ALLOC(key, keylen);
1858 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1859 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1861 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
1862 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1864 if (!fid_is_sane(&gf->gf_fid))
1865 GOTO(out, rc = -EINVAL);
1867 /* Val is struct getinfo_fid2path result plus path */
1868 vallen = sizeof(*gf) + gf->gf_pathlen;
1870 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf, NULL);
1871 if (rc != 0 && rc != -EREMOTE)
1874 if (vallen <= sizeof(*gf))
1875 GOTO(out, rc = -EPROTO);
1876 else if (vallen > sizeof(*gf) + gf->gf_pathlen)
1877 GOTO(out, rc = -EOVERFLOW);
1879 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n%s\n",
1880 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);
1883 OBD_FREE(key, keylen);
1887 static int mdc_ioc_hsm_progress(struct obd_export *exp,
1888 struct hsm_progress_kernel *hpk)
1890 struct obd_import *imp = class_exp2cliimp(exp);
1891 struct hsm_progress_kernel *req_hpk;
1892 struct ptlrpc_request *req;
1896 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1897 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1899 GOTO(out, rc = -ENOMEM);
1901 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
1903 /* Copy hsm_progress struct */
1904 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1905 if (req_hpk == NULL)
1906 GOTO(out, rc = -EPROTO);
1909 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
1911 ptlrpc_request_set_replen(req);
1913 rc = mdc_queue_wait(req);
1916 ptlrpc_req_finished(req);
1920 static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
1922 __u32 *archive_mask;
1923 struct ptlrpc_request *req;
1927 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
1929 MDS_HSM_CT_REGISTER);
1931 GOTO(out, rc = -ENOMEM);
1933 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
1935 /* Copy hsm_progress struct */
1936 archive_mask = req_capsule_client_get(&req->rq_pill,
1937 &RMF_MDS_HSM_ARCHIVE);
1938 if (archive_mask == NULL)
1939 GOTO(out, rc = -EPROTO);
1941 *archive_mask = archives;
1943 ptlrpc_request_set_replen(req);
1945 rc = mdc_queue_wait(req);
1948 ptlrpc_req_finished(req);
1952 static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1953 struct md_op_data *op_data)
1955 struct hsm_current_action *hca = op_data->op_data;
1956 struct hsm_current_action *req_hca;
1957 struct ptlrpc_request *req;
1961 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1962 &RQF_MDS_HSM_ACTION);
1966 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1968 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1970 ptlrpc_request_free(req);
1974 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1975 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1977 ptlrpc_request_set_replen(req);
1979 rc = mdc_queue_wait(req);
1983 req_hca = req_capsule_server_get(&req->rq_pill,
1984 &RMF_MDS_HSM_CURRENT_ACTION);
1985 if (req_hca == NULL)
1986 GOTO(out, rc = -EPROTO);
1992 ptlrpc_req_finished(req);
1996 static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1998 struct ptlrpc_request *req;
2002 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
2004 MDS_HSM_CT_UNREGISTER);
2006 GOTO(out, rc = -ENOMEM);
2008 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
2010 ptlrpc_request_set_replen(req);
2012 rc = mdc_queue_wait(req);
2015 ptlrpc_req_finished(req);
2019 static int mdc_ioc_hsm_state_get(struct obd_export *exp,
2020 struct md_op_data *op_data)
2022 struct hsm_user_state *hus = op_data->op_data;
2023 struct hsm_user_state *req_hus;
2024 struct ptlrpc_request *req;
2028 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2029 &RQF_MDS_HSM_STATE_GET);
2033 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
2035 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
2037 ptlrpc_request_free(req);
2041 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
2042 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
2044 ptlrpc_request_set_replen(req);
2046 rc = mdc_queue_wait(req);
2050 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
2051 if (req_hus == NULL)
2052 GOTO(out, rc = -EPROTO);
2058 ptlrpc_req_finished(req);
2062 static int mdc_ioc_hsm_state_set(struct obd_export *exp,
2063 struct md_op_data *op_data)
2065 struct hsm_state_set *hss = op_data->op_data;
2066 struct hsm_state_set *req_hss;
2067 struct ptlrpc_request *req;
2071 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2072 &RQF_MDS_HSM_STATE_SET);
2076 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
2078 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
2080 ptlrpc_request_free(req);
2084 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
2085 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
2088 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
2089 if (req_hss == NULL)
2090 GOTO(out, rc = -EPROTO);
2093 ptlrpc_request_set_replen(req);
2095 rc = mdc_queue_wait(req);
2100 ptlrpc_req_finished(req);
2104 static int mdc_ioc_hsm_request(struct obd_export *exp,
2105 struct hsm_user_request *hur)
2107 struct obd_import *imp = class_exp2cliimp(exp);
2108 struct ptlrpc_request *req;
2109 struct hsm_request *req_hr;
2110 struct hsm_user_item *req_hui;
2115 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
2117 GOTO(out, rc = -ENOMEM);
2119 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
2120 hur->hur_request.hr_itemcount
2121 * sizeof(struct hsm_user_item));
2122 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
2123 hur->hur_request.hr_data_len);
2125 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
2127 ptlrpc_request_free(req);
2131 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
2133 /* Copy hsm_request struct */
2134 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
2136 GOTO(out, rc = -EPROTO);
2137 *req_hr = hur->hur_request;
2139 /* Copy hsm_user_item structs */
2140 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
2141 if (req_hui == NULL)
2142 GOTO(out, rc = -EPROTO);
2143 memcpy(req_hui, hur->hur_user_item,
2144 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
2146 /* Copy opaque field */
2147 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
2148 if (req_opaque == NULL)
2149 GOTO(out, rc = -EPROTO);
2150 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
2152 ptlrpc_request_set_replen(req);
2154 rc = mdc_queue_wait(req);
2158 ptlrpc_req_finished(req);
2162 static struct kuc_hdr *changelog_kuc_hdr(char *buf, int len, int flags)
2164 struct kuc_hdr *lh = (struct kuc_hdr *)buf;
2166 LASSERT(len <= KUC_CHANGELOG_MSG_MAXSIZE);
2168 lh->kuc_magic = KUC_MAGIC;
2169 lh->kuc_transport = KUC_TRANSPORT_CHANGELOG;
2170 lh->kuc_flags = flags;
2171 lh->kuc_msgtype = CL_RECORD;
2172 lh->kuc_msglen = len;
2176 #define D_CHANGELOG 0
2178 struct changelog_show {
2183 struct obd_device *cs_obd;
2186 static int changelog_kkuc_cb(const struct lu_env *env, struct llog_handle *llh,
2187 struct llog_rec_hdr *hdr, void *data)
2189 struct changelog_show *cs = data;
2190 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
2195 if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
2197 CERROR("%s: not a changelog rec %x/%d: rc = %d\n",
2198 cs->cs_obd->obd_name, rec->cr_hdr.lrh_type,
2199 rec->cr.cr_type, rc);
2203 if (rec->cr.cr_index < cs->cs_startrec) {
2204 /* Skip entries earlier than what we are interested in */
2205 CDEBUG(D_CHANGELOG, "rec="LPU64" start="LPU64"\n",
2206 rec->cr.cr_index, cs->cs_startrec);
2210 CDEBUG(D_CHANGELOG, LPU64" %02d%-5s "LPU64" 0x%x t="DFID" p="DFID
2211 " %.*s\n", rec->cr.cr_index, rec->cr.cr_type,
2212 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
2213 rec->cr.cr_flags & CLF_FLAGMASK,
2214 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
2215 rec->cr.cr_namelen, changelog_rec_name(&rec->cr));
2217 len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen;
2219 /* Set up the message */
2220 lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags);
2221 memcpy(lh + 1, &rec->cr, len - sizeof(*lh));
2223 rc = libcfs_kkuc_msg_put(cs->cs_fp, lh);
2224 CDEBUG(D_CHANGELOG, "kucmsg fp %p len %d rc %d\n", cs->cs_fp, len,rc);
2229 static int mdc_changelog_send_thread(void *csdata)
2231 struct changelog_show *cs = csdata;
2232 struct llog_ctxt *ctxt = NULL;
2233 struct llog_handle *llh = NULL;
2234 struct kuc_hdr *kuch;
2237 CDEBUG(D_CHANGELOG, "changelog to fp=%p start "LPU64"\n",
2238 cs->cs_fp, cs->cs_startrec);
2240 OBD_ALLOC(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
2241 if (cs->cs_buf == NULL)
2242 GOTO(out, rc = -ENOMEM);
2244 /* Set up the remote catalog handle */
2245 ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT);
2247 GOTO(out, rc = -ENOENT);
2248 rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG,
2251 CERROR("%s: fail to open changelog catalog: rc = %d\n",
2252 cs->cs_obd->obd_name, rc);
2255 rc = llog_init_handle(NULL, llh, LLOG_F_IS_CAT, NULL);
2257 CERROR("llog_init_handle failed %d\n", rc);
2261 rc = llog_cat_process(NULL, llh, changelog_kkuc_cb, cs, 0, 0);
2263 /* Send EOF no matter what our result */
2264 if ((kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch),
2266 kuch->kuc_msgtype = CL_EOF;
2267 libcfs_kkuc_msg_put(cs->cs_fp, kuch);
2273 llog_cat_close(NULL, llh);
2275 llog_ctxt_put(ctxt);
2277 OBD_FREE(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
2282 static int mdc_ioc_changelog_send(struct obd_device *obd,
2283 struct ioc_changelog *icc)
2285 struct changelog_show *cs;
2286 struct task_struct *task;
2289 /* Freed in mdc_changelog_send_thread */
2295 cs->cs_startrec = icc->icc_recno;
2296 /* matching fput in mdc_changelog_send_thread */
2297 cs->cs_fp = fget(icc->icc_id);
2298 cs->cs_flags = icc->icc_flags;
2301 * New thread because we should return to user app before
2302 * writing into our pipe
2304 task = kthread_run(mdc_changelog_send_thread, cs,
2305 "mdc_clg_send_thread");
2308 CERROR("%s: cannot start changelog thread: rc = %d\n",
2313 CDEBUG(D_CHANGELOG, "%s: started changelog thread\n",
2320 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2321 struct lustre_kernelcomm *lk);
2323 static int mdc_quotacheck(struct obd_device *unused, struct obd_export *exp,
2324 struct obd_quotactl *oqctl)
2326 struct client_obd *cli = &exp->exp_obd->u.cli;
2327 struct ptlrpc_request *req;
2328 struct obd_quotactl *body;
2332 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
2333 &RQF_MDS_QUOTACHECK, LUSTRE_MDS_VERSION,
2338 body = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2341 ptlrpc_request_set_replen(req);
2343 /* the next poll will find -ENODATA, that means quotacheck is
2345 cli->cl_qchk_stat = -ENODATA;
2346 rc = ptlrpc_queue_wait(req);
2348 cli->cl_qchk_stat = rc;
2349 ptlrpc_req_finished(req);
2353 static int mdc_quota_poll_check(struct obd_export *exp,
2354 struct if_quotacheck *qchk)
2356 struct client_obd *cli = &exp->exp_obd->u.cli;
2360 qchk->obd_uuid = cli->cl_target_uuid;
2361 memcpy(qchk->obd_type, LUSTRE_MDS_NAME, strlen(LUSTRE_MDS_NAME));
2363 rc = cli->cl_qchk_stat;
2364 /* the client is not the previous one */
2365 if (rc == CL_NOT_QUOTACHECKED)
2370 static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
2371 struct obd_quotactl *oqctl)
2373 struct ptlrpc_request *req;
2374 struct obd_quotactl *oqc;
2378 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
2379 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
2384 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2387 ptlrpc_request_set_replen(req);
2388 ptlrpc_at_set_req_timeout(req);
2389 req->rq_no_resend = 1;
2391 rc = ptlrpc_queue_wait(req);
2393 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
2395 if (req->rq_repmsg &&
2396 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
2399 CERROR ("Can't unpack obd_quotactl\n");
2402 ptlrpc_req_finished(req);
2407 static int mdc_ioc_swap_layouts(struct obd_export *exp,
2408 struct md_op_data *op_data)
2410 struct list_head cancels = LIST_HEAD_INIT(cancels);
2411 struct ptlrpc_request *req;
2413 struct mdc_swap_layouts *msl, *payload;
2416 msl = op_data->op_data;
2418 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
2419 * first thing it will do is to cancel the 2 layout
2420 * locks hold by this client.
2421 * So the client must cancel its layout locks on the 2 fids
2422 * with the request RPC to avoid extra RPC round trips
2424 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
2425 LCK_EX, MDS_INODELOCK_LAYOUT |
2426 MDS_INODELOCK_XATTR);
2427 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
2428 LCK_EX, MDS_INODELOCK_LAYOUT |
2429 MDS_INODELOCK_XATTR);
2431 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2432 &RQF_MDS_SWAP_LAYOUTS);
2434 ldlm_lock_list_put(&cancels, l_bl_ast, count);
2438 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
2439 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
2441 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
2443 ptlrpc_request_free(req);
2447 mdc_swap_layouts_pack(req, op_data);
2449 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
2454 ptlrpc_request_set_replen(req);
2456 rc = ptlrpc_queue_wait(req);
2462 ptlrpc_req_finished(req);
2466 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2467 void *karg, void *uarg)
2469 struct obd_device *obd = exp->exp_obd;
2470 struct obd_ioctl_data *data = karg;
2471 struct obd_import *imp = obd->u.cli.cl_import;
2475 if (!try_module_get(THIS_MODULE)) {
2476 CERROR("Can't get module. Is it alive?");
2480 case OBD_IOC_CHANGELOG_SEND:
2481 rc = mdc_ioc_changelog_send(obd, karg);
2483 case OBD_IOC_CHANGELOG_CLEAR: {
2484 struct ioc_changelog *icc = karg;
2485 struct changelog_setinfo cs =
2486 {.cs_recno = icc->icc_recno, .cs_id = icc->icc_id};
2487 rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR),
2488 KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
2492 case OBD_IOC_FID2PATH:
2493 rc = mdc_ioc_fid2path(exp, karg);
2495 case LL_IOC_HSM_CT_START:
2496 rc = mdc_ioc_hsm_ct_start(exp, karg);
2497 /* ignore if it was already registered on this MDS. */
2501 case LL_IOC_HSM_PROGRESS:
2502 rc = mdc_ioc_hsm_progress(exp, karg);
2504 case LL_IOC_HSM_STATE_GET:
2505 rc = mdc_ioc_hsm_state_get(exp, karg);
2507 case LL_IOC_HSM_STATE_SET:
2508 rc = mdc_ioc_hsm_state_set(exp, karg);
2510 case LL_IOC_HSM_ACTION:
2511 rc = mdc_ioc_hsm_current_action(exp, karg);
2513 case LL_IOC_HSM_REQUEST:
2514 rc = mdc_ioc_hsm_request(exp, karg);
2516 case OBD_IOC_CLIENT_RECOVER:
2517 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
2521 case IOC_OSC_SET_ACTIVE:
2522 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
2524 case OBD_IOC_POLL_QUOTACHECK:
2525 rc = mdc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2527 case OBD_IOC_PING_TARGET:
2528 rc = ptlrpc_obd_ping(obd);
2531 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
2532 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
2533 * there'd be no LMV layer thus we might be called here. Eventually
2534 * this code should be removed.
2537 case IOC_OBD_STATFS: {
2538 struct obd_statfs stat_buf = {0};
2540 if (*((__u32 *) data->ioc_inlbuf2) != 0)
2541 GOTO(out, rc = -ENODEV);
2544 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
2545 min((int)data->ioc_plen2,
2546 (int)sizeof(struct obd_uuid))))
2547 GOTO(out, rc = -EFAULT);
2549 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
2550 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
2555 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
2556 min((int) data->ioc_plen1,
2557 (int) sizeof(stat_buf))))
2558 GOTO(out, rc = -EFAULT);
2562 case OBD_IOC_QUOTACTL: {
2563 struct if_quotactl *qctl = karg;
2564 struct obd_quotactl *oqctl;
2566 OBD_ALLOC_PTR(oqctl);
2568 GOTO(out, rc = -ENOMEM);
2570 QCTL_COPY(oqctl, qctl);
2571 rc = obd_quotactl(exp, oqctl);
2573 QCTL_COPY(qctl, oqctl);
2574 qctl->qc_valid = QC_MDTIDX;
2575 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
2578 OBD_FREE_PTR(oqctl);
2581 case LL_IOC_GET_CONNECT_FLAGS:
2582 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
2583 sizeof(*exp_connect_flags_ptr(exp))))
2584 GOTO(out, rc = -EFAULT);
2587 case LL_IOC_LOV_SWAP_LAYOUTS:
2588 rc = mdc_ioc_swap_layouts(exp, karg);
2591 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
2592 GOTO(out, rc = -ENOTTY);
2595 module_put(THIS_MODULE);
2600 int mdc_get_info_rpc(struct obd_export *exp,
2601 obd_count keylen, void *key,
2602 int vallen, void *val)
2604 struct obd_import *imp = class_exp2cliimp(exp);
2605 struct ptlrpc_request *req;
2610 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
2614 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
2615 RCL_CLIENT, keylen);
2616 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
2617 RCL_CLIENT, sizeof(__u32));
2619 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
2621 ptlrpc_request_free(req);
2625 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
2626 memcpy(tmp, key, keylen);
2627 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
2628 memcpy(tmp, &vallen, sizeof(__u32));
2630 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
2631 RCL_SERVER, vallen);
2632 ptlrpc_request_set_replen(req);
2634 rc = ptlrpc_queue_wait(req);
2635 /* -EREMOTE means the get_info result is partial, and it needs to
2636 * continue on another MDT, see fid2path part in lmv_iocontrol */
2637 if (rc == 0 || rc == -EREMOTE) {
2638 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
2639 memcpy(val, tmp, vallen);
2640 if (ptlrpc_rep_need_swab(req)) {
2641 if (KEY_IS(KEY_FID2PATH))
2642 lustre_swab_fid2path(val);
2645 ptlrpc_req_finished(req);
2650 static void lustre_swab_hai(struct hsm_action_item *h)
2652 __swab32s(&h->hai_len);
2653 __swab32s(&h->hai_action);
2654 lustre_swab_lu_fid(&h->hai_fid);
2655 lustre_swab_lu_fid(&h->hai_dfid);
2656 __swab64s(&h->hai_cookie);
2657 __swab64s(&h->hai_extent.offset);
2658 __swab64s(&h->hai_extent.length);
2659 __swab64s(&h->hai_gid);
2662 static void lustre_swab_hal(struct hsm_action_list *h)
2664 struct hsm_action_item *hai;
2667 __swab32s(&h->hal_version);
2668 __swab32s(&h->hal_count);
2669 __swab32s(&h->hal_archive_id);
2670 __swab64s(&h->hal_flags);
2672 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
2673 lustre_swab_hai(hai);
2676 static void lustre_swab_kuch(struct kuc_hdr *l)
2678 __swab16s(&l->kuc_magic);
2679 /* __u8 l->kuc_transport */
2680 __swab16s(&l->kuc_msgtype);
2681 __swab16s(&l->kuc_msglen);
2684 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2685 struct lustre_kernelcomm *lk)
2687 struct obd_import *imp = class_exp2cliimp(exp);
2688 __u32 archive = lk->lk_data;
2691 if (lk->lk_group != KUC_GRP_HSM) {
2692 CERROR("Bad copytool group %d\n", lk->lk_group);
2696 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2697 lk->lk_uid, lk->lk_group, lk->lk_flags);
2699 if (lk->lk_flags & LK_FLG_STOP) {
2700 /* Unregister with the coordinator */
2701 rc = mdc_ioc_hsm_ct_unregister(imp);
2703 rc = mdc_ioc_hsm_ct_register(imp, archive);
2710 * Send a message to any listening copytools
2711 * @param val KUC message (kuc_hdr + hsm_action_list)
2712 * @param len total length of message
2714 static int mdc_hsm_copytool_send(int len, void *val)
2716 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2717 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2721 if (len < sizeof(*lh) + sizeof(*hal)) {
2722 CERROR("Short HSM message %d < %d\n", len,
2723 (int) (sizeof(*lh) + sizeof(*hal)));
2726 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2727 lustre_swab_kuch(lh);
2728 lustre_swab_hal(hal);
2729 } else if (lh->kuc_magic != KUC_MAGIC) {
2730 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2734 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2736 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2737 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2739 /* Broadcast to HSM listeners */
2740 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
2746 * callback function passed to kuc for re-registering each HSM copytool
2747 * running on MDC, after MDT shutdown/recovery.
2748 * @param data copytool registration data
2749 * @param cb_arg callback argument (obd_import)
2751 static int mdc_hsm_ct_reregister(void *data, void *cb_arg)
2753 struct kkuc_ct_data *kcd = data;
2754 struct obd_import *imp = (struct obd_import *)cb_arg;
2757 if (kcd == NULL || kcd->kcd_magic != KKUC_CT_DATA_MAGIC)
2760 if (!obd_uuid_equals(&kcd->kcd_uuid, &imp->imp_obd->obd_uuid))
2763 CDEBUG(D_HA, "%s: recover copytool registration to MDT (archive=%#x)\n",
2764 imp->imp_obd->obd_name, kcd->kcd_archive);
2765 rc = mdc_ioc_hsm_ct_register(imp, kcd->kcd_archive);
2767 /* ignore error if the copytool is already registered */
2768 return (rc == -EEXIST) ? 0 : rc;
2772 * Re-establish all kuc contexts with MDT
2773 * after MDT shutdown/recovery.
2775 static int mdc_kuc_reregister(struct obd_import *imp)
2777 /* re-register HSM agents */
2778 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister,
2782 int mdc_set_info_async(const struct lu_env *env,
2783 struct obd_export *exp,
2784 obd_count keylen, void *key,
2785 obd_count vallen, void *val,
2786 struct ptlrpc_request_set *set)
2788 struct obd_import *imp = class_exp2cliimp(exp);
2792 if (KEY_IS(KEY_READ_ONLY)) {
2793 if (vallen != sizeof(int))
2796 spin_lock(&imp->imp_lock);
2797 if (*((int *)val)) {
2798 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2799 imp->imp_connect_data.ocd_connect_flags |=
2802 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2803 imp->imp_connect_data.ocd_connect_flags &=
2804 ~OBD_CONNECT_RDONLY;
2806 spin_unlock(&imp->imp_lock);
2808 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2809 keylen, key, vallen, val, set);
2812 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2813 sptlrpc_conf_client_adapt(exp->exp_obd);
2816 if (KEY_IS(KEY_FLUSH_CTX)) {
2817 sptlrpc_import_flush_my_ctx(imp);
2820 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2821 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2822 keylen, key, vallen, val, set);
2825 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2826 rc = mdc_hsm_copytool_send(vallen, val);
2830 CERROR("Unknown key %s\n", (char *)key);
2834 int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2835 __u32 keylen, void *key, __u32 *vallen, void *val,
2836 struct lov_stripe_md *lsm)
2840 if (KEY_IS(KEY_MAX_EASIZE)) {
2841 int mdsize, *max_easize;
2843 if (*vallen != sizeof(int))
2845 mdsize = *(int *)val;
2846 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2847 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2849 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2851 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2852 int *default_easize;
2854 if (*vallen != sizeof(int))
2856 default_easize = val;
2857 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2859 } else if (KEY_IS(KEY_MAX_COOKIESIZE)) {
2860 int mdsize, *max_cookiesize;
2862 if (*vallen != sizeof(int))
2864 mdsize = *(int *)val;
2865 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_cookiesize)
2866 exp->exp_obd->u.cli.cl_max_mds_cookiesize = mdsize;
2867 max_cookiesize = val;
2868 *max_cookiesize = exp->exp_obd->u.cli.cl_max_mds_cookiesize;
2870 } else if (KEY_IS(KEY_DEFAULT_COOKIESIZE)) {
2871 int *default_cookiesize;
2873 if (*vallen != sizeof(int))
2875 default_cookiesize = val;
2876 *default_cookiesize =
2877 exp->exp_obd->u.cli.cl_default_mds_cookiesize;
2879 } else if (KEY_IS(KEY_CONN_DATA)) {
2880 struct obd_import *imp = class_exp2cliimp(exp);
2881 struct obd_connect_data *data = val;
2883 if (*vallen != sizeof(*data))
2886 *data = imp->imp_connect_data;
2888 } else if (KEY_IS(KEY_TGT_COUNT)) {
2893 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2898 static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid,
2899 struct obd_capa *oc, struct obd_client_handle *handle,
2902 struct ptlrpc_request *req;
2903 struct mdt_body *body;
2907 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_PIN);
2911 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2913 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_PIN);
2915 ptlrpc_request_free(req);
2919 mdc_pack_body(req, fid, oc, 0, 0, -1, flags);
2921 ptlrpc_request_set_replen(req);
2923 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2924 rc = ptlrpc_queue_wait(req);
2925 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2927 CERROR("Pin failed: %d\n", rc);
2931 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2933 GOTO(err_out, rc = -EPROTO);
2935 handle->och_fh = body->handle;
2936 handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
2938 handle->och_mod = obd_mod_alloc();
2939 if (handle->och_mod == NULL) {
2940 DEBUG_REQ(D_ERROR, req, "can't allocate md_open_data");
2941 GOTO(err_out, rc = -ENOMEM);
2943 handle->och_mod->mod_open_req = req; /* will be dropped by unpin */
2948 ptlrpc_req_finished(req);
2952 static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle,
2955 struct ptlrpc_request *req;
2956 struct mdt_body *body;
2960 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_UNPIN,
2961 LUSTRE_MDS_VERSION, MDS_UNPIN);
2965 body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
2966 body->handle = handle->och_fh;
2969 ptlrpc_request_set_replen(req);
2971 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2972 rc = ptlrpc_queue_wait(req);
2973 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
2976 CERROR("Unpin failed: %d\n", rc);
2978 ptlrpc_req_finished(req);
2979 ptlrpc_req_finished(handle->och_mod->mod_open_req);
2981 obd_mod_put(handle->och_mod);
2985 int mdc_fsync(struct obd_export *exp, const struct lu_fid *fid,
2986 struct obd_capa *oc, struct ptlrpc_request **request)
2988 struct ptlrpc_request *req;
2993 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2997 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2999 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
3001 ptlrpc_request_free(req);
3005 mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
3007 ptlrpc_request_set_replen(req);
3009 rc = ptlrpc_queue_wait(req);
3011 ptlrpc_req_finished(req);
3017 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
3018 enum obd_import_event event)
3022 LASSERT(imp->imp_obd == obd);
3025 case IMP_EVENT_DISCON: {
3027 /* XXX Pass event up to OBDs stack. used only for FLD now */
3028 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
3032 case IMP_EVENT_INACTIVE: {
3033 struct client_obd *cli = &obd->u.cli;
3035 * Flush current sequence to make client obtain new one
3036 * from server in case of disconnect/reconnect.
3038 if (cli->cl_seq != NULL)
3039 seq_client_flush(cli->cl_seq);
3041 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
3044 case IMP_EVENT_INVALIDATE: {
3045 struct ldlm_namespace *ns = obd->obd_namespace;
3047 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
3051 case IMP_EVENT_ACTIVE:
3052 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
3053 /* redo the kuc registration after reconnecting */
3055 rc = mdc_kuc_reregister(imp);
3058 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
3060 case IMP_EVENT_DEACTIVATE:
3061 case IMP_EVENT_ACTIVATE:
3064 CERROR("Unknown import event %x\n", event);
3070 int mdc_fid_alloc(const struct lu_env *env, struct obd_export *exp,
3071 struct lu_fid *fid, struct md_op_data *op_data)
3073 struct client_obd *cli = &exp->exp_obd->u.cli;
3074 struct lu_client_seq *seq = cli->cl_seq;
3076 RETURN(seq_client_alloc_fid(env, seq, fid));
3079 struct obd_uuid *mdc_get_uuid(struct obd_export *exp) {
3080 struct client_obd *cli = &exp->exp_obd->u.cli;
3081 return &cli->cl_target_uuid;
3085 * Determine whether the lock can be canceled before replaying it during
3086 * recovery, non zero value will be return if the lock can be canceled,
3087 * or zero returned for not
3089 static int mdc_cancel_weight(struct ldlm_lock *lock)
3091 if (lock->l_resource->lr_type != LDLM_IBITS)
3094 /* FIXME: if we ever get into a situation where there are too many
3095 * opened files with open locks on a single node, then we really
3096 * should replay these open locks to reget it */
3097 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
3103 static int mdc_resource_inode_free(struct ldlm_resource *res)
3105 if (res->lr_lvb_inode)
3106 res->lr_lvb_inode = NULL;
3111 struct ldlm_valblock_ops inode_lvbo = {
3112 .lvbo_free = mdc_resource_inode_free
3115 static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
3117 struct client_obd *cli = &obd->u.cli;
3121 OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
3122 if (!cli->cl_rpc_lock)
3124 mdc_init_rpc_lock(cli->cl_rpc_lock);
3126 rc = ptlrpcd_addref();
3128 GOTO(err_rpc_lock, rc);
3130 OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
3131 if (!cli->cl_close_lock)
3132 GOTO(err_ptlrpcd_decref, rc = -ENOMEM);
3133 mdc_init_rpc_lock(cli->cl_close_lock);
3135 rc = client_obd_setup(obd, cfg);
3137 GOTO(err_close_lock, rc);
3139 obd->obd_vars = lprocfs_mdc_obd_vars;
3140 lprocfs_seq_obd_setup(obd);
3141 lprocfs_alloc_md_stats(obd, 0);
3143 sptlrpc_lprocfs_cliobd_attach(obd);
3144 ptlrpc_lprocfs_register_obd(obd);
3146 ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
3148 obd->obd_namespace->ns_lvbo = &inode_lvbo;
3150 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
3153 CERROR("failed to setup llogging subsystems\n");
3159 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
3163 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
3167 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
3168 * us to make MDS RPCs with large enough reply buffers to hold a default
3169 * sized EA and cookie without having to calculate this (via a call into the
3170 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
3171 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
3172 * a large number of stripes is possible. If a larger reply buffer is
3173 * required it will be reallocated in the ptlrpc layer due to overflow.
3175 static int mdc_init_ea_size(struct obd_export *exp, int easize,
3176 int def_easize, int cookiesize, int def_cookiesize)
3178 struct obd_device *obd = exp->exp_obd;
3179 struct client_obd *cli = &obd->u.cli;
3182 if (cli->cl_max_mds_easize < easize)
3183 cli->cl_max_mds_easize = easize;
3185 if (cli->cl_default_mds_easize < def_easize)
3186 cli->cl_default_mds_easize = def_easize;
3188 if (cli->cl_max_mds_cookiesize < cookiesize)
3189 cli->cl_max_mds_cookiesize = cookiesize;
3191 if (cli->cl_default_mds_cookiesize < def_cookiesize)
3192 cli->cl_default_mds_cookiesize = def_cookiesize;
3197 static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3203 case OBD_CLEANUP_EARLY:
3205 case OBD_CLEANUP_EXPORTS:
3206 /* Failsafe, ok if racy */
3207 if (obd->obd_type->typ_refcnt <= 1)
3208 libcfs_kkuc_group_rem(0, KUC_GRP_HSM, NULL);
3210 obd_cleanup_client_import(obd);
3211 ptlrpc_lprocfs_unregister_obd(obd);
3212 lprocfs_obd_cleanup(obd);
3213 lprocfs_free_md_stats(obd);
3215 rc = obd_llog_finish(obd, 0);
3217 CERROR("failed to cleanup llogging subsystems\n");
3223 static int mdc_cleanup(struct obd_device *obd)
3225 struct client_obd *cli = &obd->u.cli;
3227 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
3228 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
3232 return client_obd_cleanup(obd);
3236 static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3237 struct obd_device *tgt, int *index)
3239 struct llog_ctxt *ctxt;
3244 LASSERT(olg == &obd->obd_olg);
3246 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, tgt,
3251 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
3252 llog_initiator_connect(ctxt);
3253 llog_ctxt_put(ctxt);
3258 static int mdc_llog_finish(struct obd_device *obd, int count)
3260 struct llog_ctxt *ctxt;
3264 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
3266 llog_cleanup(NULL, ctxt);
3271 static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
3273 struct lustre_cfg *lcfg = buf;
3274 int rc = class_process_proc_seq_param(PARAM_MDC, obd->obd_vars,
3276 return (rc > 0 ? 0: rc);
3280 /* get remote permission for current user on fid */
3281 int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
3282 struct obd_capa *oc, __u32 suppgid,
3283 struct ptlrpc_request **request)
3285 struct ptlrpc_request *req;
3289 LASSERT(client_is_remote(exp));
3292 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
3296 mdc_set_capa_size(req, &RMF_CAPA1, oc);
3298 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
3300 ptlrpc_request_free(req);
3304 mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
3306 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
3307 sizeof(struct mdt_remote_perm));
3309 ptlrpc_request_set_replen(req);
3311 rc = ptlrpc_queue_wait(req);
3313 ptlrpc_req_finished(req);
3319 static int mdc_interpret_renew_capa(const struct lu_env *env,
3320 struct ptlrpc_request *req, void *args,
3323 struct mdc_renew_capa_args *ra = args;
3324 struct mdt_body *body = NULL;
3325 struct lustre_capa *capa;
3329 GOTO(out, capa = ERR_PTR(status));
3331 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
3333 GOTO(out, capa = ERR_PTR(-EFAULT));
3335 if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
3336 GOTO(out, capa = ERR_PTR(-ENOENT));
3338 capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
3340 GOTO(out, capa = ERR_PTR(-EFAULT));
3343 ra->ra_cb(ra->ra_oc, capa);
3347 static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
3350 struct ptlrpc_request *req;
3351 struct mdc_renew_capa_args *ra;
3354 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
3355 LUSTRE_MDS_VERSION, MDS_GETATTR);
3359 /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
3360 * capa to renew is oss capa.
3362 mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
3363 ptlrpc_request_set_replen(req);
3365 CLASSERT(sizeof(*ra) <= sizeof(req->rq_async_args));
3366 ra = ptlrpc_req_async_args(req);
3369 req->rq_interpret_reply = mdc_interpret_renew_capa;
3370 ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
3374 struct obd_ops mdc_obd_ops = {
3375 .o_owner = THIS_MODULE,
3376 .o_setup = mdc_setup,
3377 .o_precleanup = mdc_precleanup,
3378 .o_cleanup = mdc_cleanup,
3379 .o_add_conn = client_import_add_conn,
3380 .o_del_conn = client_import_del_conn,
3381 .o_connect = client_connect_import,
3382 .o_disconnect = client_disconnect_export,
3383 .o_iocontrol = mdc_iocontrol,
3384 .o_set_info_async = mdc_set_info_async,
3385 .o_statfs = mdc_statfs,
3387 .o_unpin = mdc_unpin,
3388 .o_fid_init = client_fid_init,
3389 .o_fid_fini = client_fid_fini,
3390 .o_fid_alloc = mdc_fid_alloc,
3391 .o_import_event = mdc_import_event,
3392 .o_llog_init = mdc_llog_init,
3393 .o_llog_finish = mdc_llog_finish,
3394 .o_get_info = mdc_get_info,
3395 .o_process_config = mdc_process_config,
3396 .o_get_uuid = mdc_get_uuid,
3397 .o_quotactl = mdc_quotactl,
3398 .o_quotacheck = mdc_quotacheck
3401 struct md_ops mdc_md_ops = {
3402 .m_getstatus = mdc_getstatus,
3403 .m_null_inode = mdc_null_inode,
3404 .m_find_cbdata = mdc_find_cbdata,
3405 .m_close = mdc_close,
3406 .m_create = mdc_create,
3407 .m_done_writing = mdc_done_writing,
3408 .m_enqueue = mdc_enqueue,
3409 .m_getattr = mdc_getattr,
3410 .m_getattr_name = mdc_getattr_name,
3411 .m_intent_lock = mdc_intent_lock,
3413 .m_is_subdir = mdc_is_subdir,
3414 .m_rename = mdc_rename,
3415 .m_setattr = mdc_setattr,
3416 .m_setxattr = mdc_setxattr,
3417 .m_getxattr = mdc_getxattr,
3418 .m_fsync = mdc_fsync,
3419 .m_read_entry = mdc_read_entry,
3420 .m_unlink = mdc_unlink,
3421 .m_cancel_unused = mdc_cancel_unused,
3422 .m_init_ea_size = mdc_init_ea_size,
3423 .m_set_lock_data = mdc_set_lock_data,
3424 .m_lock_match = mdc_lock_match,
3425 .m_get_lustre_md = mdc_get_lustre_md,
3426 .m_free_lustre_md = mdc_free_lustre_md,
3427 .m_set_open_replay_data = mdc_set_open_replay_data,
3428 .m_clear_open_replay_data = mdc_clear_open_replay_data,
3429 .m_renew_capa = mdc_renew_capa,
3430 .m_unpack_capa = mdc_unpack_capa,
3431 .m_get_remote_perm = mdc_get_remote_perm,
3432 .m_intent_getattr_async = mdc_intent_getattr_async,
3433 .m_revalidate_lock = mdc_revalidate_lock
3436 int __init mdc_init(void)
3438 return class_register_type(&mdc_obd_ops, &mdc_md_ops, true, NULL,
3439 #ifndef HAVE_ONLY_PROCFS_SEQ
3442 LUSTRE_MDC_NAME, NULL);
3446 static void /*__exit*/ mdc_exit(void)
3448 class_unregister_type(LUSTRE_MDC_NAME);
3451 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3452 MODULE_DESCRIPTION("Lustre Metadata Client");
3453 MODULE_LICENSE("GPL");
3455 module_init(mdc_init);
3456 module_exit(mdc_exit);