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
39 #include <linux/module.h>
40 #include <linux/pagemap.h>
41 #include <linux/miscdevice.h>
42 #include <linux/init.h>
43 #include <linux/utsname.h>
45 #include <lustre_acl.h>
46 #include <lustre_ioctl.h>
47 #include <obd_class.h>
48 #include <lustre_lmv.h>
49 #include <lustre_fid.h>
50 #include <lprocfs_status.h>
51 #include <lustre_param.h>
52 #include <lustre_log.h>
53 #include <cl_object.h>
55 #include "mdc_internal.h"
57 #define REQUEST_MINOR 244
59 struct mdc_renew_capa_args {
60 struct obd_capa *ra_oc;
61 renew_capa_cb_t ra_cb;
64 static int mdc_cleanup(struct obd_device *obd);
66 int mdc_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req,
67 const struct req_msg_field *field, struct obd_capa **oc)
69 struct lustre_capa *capa;
73 /* swabbed already in mdc_enqueue */
74 capa = req_capsule_server_get(&req->rq_pill, field);
78 c = alloc_capa(CAPA_SITE_CLIENT);
80 CDEBUG(D_INFO, "alloc capa failed!\n");
89 static inline int mdc_queue_wait(struct ptlrpc_request *req)
91 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
94 /* obd_get_request_slot() ensures that this client has no more
95 * than cl_max_rpcs_in_flight RPCs simultaneously inf light
97 rc = obd_get_request_slot(cli);
101 rc = ptlrpc_queue_wait(req);
102 obd_put_request_slot(cli);
107 /* Helper that implements most of mdc_getstatus and signal_completed_replay. */
108 /* XXX this should become mdc_get_info("key"), sending MDS_GET_INFO RPC */
109 static int send_getstatus(struct obd_import *imp, struct lu_fid *rootfid,
110 struct obd_capa **pc, int level, int msg_flags)
112 struct ptlrpc_request *req;
113 struct mdt_body *body;
117 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_GETSTATUS,
118 LUSTRE_MDS_VERSION, MDS_GETSTATUS);
122 mdc_pack_body(req, NULL, NULL, 0, 0, -1, 0);
123 lustre_msg_add_flags(req->rq_reqmsg, msg_flags);
124 req->rq_send_state = level;
126 ptlrpc_request_set_replen(req);
128 rc = ptlrpc_queue_wait(req);
132 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
134 GOTO(out, rc = -EPROTO);
136 if (body->mbo_valid & OBD_MD_FLMDSCAPA) {
137 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, pc);
142 *rootfid = body->mbo_fid1;
143 CDEBUG(D_NET, "root fid="DFID", last_committed="LPU64"\n",
144 PFID(rootfid), lustre_msg_get_last_committed(req->rq_repmsg));
147 ptlrpc_req_finished(req);
151 /* This should be mdc_get_info("rootfid") */
152 int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid,
153 struct obd_capa **pc)
155 return send_getstatus(class_exp2cliimp(exp), rootfid, pc,
160 * This function now is known to always saying that it will receive 4 buffers
161 * from server. Even for cases when acl_size and md_size is zero, RPC header
162 * will contain 4 fields and RPC itself will contain zero size fields. This is
163 * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
164 * and thus zero, it shrinks it, making zero size. The same story about
165 * md_size. And this is course of problem when client waits for smaller number
166 * of fields. This issue will be fixed later when client gets aware of RPC
169 static int mdc_getattr_common(struct obd_export *exp,
170 struct ptlrpc_request *req)
172 struct req_capsule *pill = &req->rq_pill;
173 struct mdt_body *body;
178 /* Request message already built. */
179 rc = ptlrpc_queue_wait(req);
183 /* sanity check for the reply */
184 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
188 CDEBUG(D_NET, "mode: %o\n", body->mbo_mode);
190 mdc_update_max_ea_from_body(exp, body);
191 if (body->mbo_eadatasize != 0) {
192 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
193 body->mbo_eadatasize);
198 if (body->mbo_valid & OBD_MD_FLRMTPERM) {
199 struct mdt_remote_perm *perm;
201 LASSERT(client_is_remote(exp));
202 perm = req_capsule_server_swab_get(pill, &RMF_ACL,
203 lustre_swab_mdt_remote_perm);
208 if (body->mbo_valid & OBD_MD_FLMDSCAPA) {
209 struct lustre_capa *capa;
210 capa = req_capsule_server_get(pill, &RMF_CAPA1);
218 int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
219 struct ptlrpc_request **request)
221 struct ptlrpc_request *req;
225 /* Single MDS without an LMV case */
226 if (op_data->op_flags & MF_GET_MDT_IDX) {
231 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
235 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
237 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
239 ptlrpc_request_free(req);
243 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
244 op_data->op_valid, op_data->op_mode, -1, 0);
246 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
248 if (op_data->op_valid & OBD_MD_FLRMTPERM) {
249 LASSERT(client_is_remote(exp));
250 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
251 sizeof(struct mdt_remote_perm));
253 ptlrpc_request_set_replen(req);
255 rc = mdc_getattr_common(exp, req);
257 ptlrpc_req_finished(req);
263 int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
264 struct ptlrpc_request **request)
266 struct ptlrpc_request *req;
271 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
272 &RQF_MDS_GETATTR_NAME);
276 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
277 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
278 op_data->op_namelen + 1);
280 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
282 ptlrpc_request_free(req);
286 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
287 op_data->op_valid, op_data->op_mode,
288 op_data->op_suppgids[0], 0);
290 if (op_data->op_name) {
291 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
292 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
293 op_data->op_namelen);
294 memcpy(name, op_data->op_name, op_data->op_namelen);
297 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
299 ptlrpc_request_set_replen(req);
301 rc = mdc_getattr_common(exp, req);
303 ptlrpc_req_finished(req);
309 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
310 const struct lu_fid *fid,
311 struct obd_capa *oc, int opcode, obd_valid valid,
312 const char *xattr_name, const char *input,
313 int input_size, int output_size, int flags,
314 __u32 suppgid, struct ptlrpc_request **request)
316 struct ptlrpc_request *req;
317 int xattr_namelen = 0;
323 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
327 mdc_set_capa_size(req, &RMF_CAPA1, oc);
329 xattr_namelen = strlen(xattr_name) + 1;
330 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
335 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
339 /* Flush local XATTR locks to get rid of a possible cancel RPC */
340 if (opcode == MDS_REINT && fid_is_sane(fid) &&
341 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
342 struct list_head cancels = LIST_HEAD_INIT(cancels);
345 /* Without that packing would fail */
347 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
350 count = mdc_resource_get_unused(exp, fid,
352 MDS_INODELOCK_XATTR);
354 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
356 ptlrpc_request_free(req);
360 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
362 ptlrpc_request_free(req);
367 if (opcode == MDS_REINT) {
368 struct mdt_rec_setxattr *rec;
370 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
371 sizeof(struct mdt_rec_reint));
372 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
373 rec->sx_opcode = REINT_SETXATTR;
374 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
375 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
376 rec->sx_cap = cfs_curproc_cap_pack();
377 rec->sx_suppgid1 = suppgid;
378 rec->sx_suppgid2 = -1;
380 rec->sx_valid = valid | OBD_MD_FLCTIME;
381 rec->sx_time = cfs_time_current_sec();
382 rec->sx_size = output_size;
383 rec->sx_flags = flags;
385 mdc_pack_capa(req, &RMF_CAPA1, oc);
387 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
391 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
392 memcpy(tmp, xattr_name, xattr_namelen);
395 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
396 memcpy(tmp, input, input_size);
399 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
400 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
401 RCL_SERVER, output_size);
402 ptlrpc_request_set_replen(req);
405 if (opcode == MDS_REINT)
406 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
408 rc = ptlrpc_queue_wait(req);
410 if (opcode == MDS_REINT)
411 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
414 ptlrpc_req_finished(req);
420 int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
421 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
422 const char *input, int input_size, int output_size,
423 int flags, __u32 suppgid, struct ptlrpc_request **request)
425 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
426 fid, oc, MDS_REINT, valid, xattr_name,
427 input, input_size, output_size, flags,
431 int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
432 struct obd_capa *oc, obd_valid valid, const char *xattr_name,
433 const char *input, int input_size, int output_size,
434 int flags, struct ptlrpc_request **request)
436 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
437 fid, oc, MDS_GETXATTR, valid, xattr_name,
438 input, input_size, output_size, flags,
442 #ifdef CONFIG_FS_POSIX_ACL
443 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
445 struct req_capsule *pill = &req->rq_pill;
446 struct mdt_body *body = md->body;
447 struct posix_acl *acl;
452 if (!body->mbo_aclsize)
455 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->mbo_aclsize);
460 acl = posix_acl_from_xattr(&init_user_ns, buf, body->mbo_aclsize);
465 CERROR("convert xattr to acl: %d\n", rc);
469 rc = posix_acl_valid(acl);
471 CERROR("validate acl: %d\n", rc);
472 posix_acl_release(acl);
480 #define mdc_unpack_acl(req, md) 0
483 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
484 struct obd_export *dt_exp, struct obd_export *md_exp,
485 struct lustre_md *md)
487 struct req_capsule *pill = &req->rq_pill;
492 memset(md, 0, sizeof(*md));
494 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
495 LASSERT(md->body != NULL);
497 if (md->body->mbo_valid & OBD_MD_FLEASIZE) {
499 struct lov_mds_md *lmm;
501 if (!S_ISREG(md->body->mbo_mode)) {
502 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
503 "regular file, but is not\n");
504 GOTO(out, rc = -EPROTO);
507 if (md->body->mbo_eadatasize == 0) {
508 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
509 "but eadatasize 0\n");
510 GOTO(out, rc = -EPROTO);
513 lmmsize = md->body->mbo_eadatasize;
514 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
516 GOTO(out, rc = -EPROTO);
518 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
522 if (rc < (typeof(rc))sizeof(*md->lsm)) {
523 CDEBUG(D_INFO, "lsm size too small: "
524 "rc < sizeof (*md->lsm) (%d < %d)\n",
525 rc, (int)sizeof(*md->lsm));
526 GOTO(out, rc = -EPROTO);
529 } else if (md->body->mbo_valid & OBD_MD_FLDIREA) {
531 struct lov_mds_md *lmv;
533 if (!S_ISDIR(md->body->mbo_mode)) {
534 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
535 "directory, but is not\n");
536 GOTO(out, rc = -EPROTO);
539 if (md->body->mbo_eadatasize == 0) {
540 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
541 "but eadatasize 0\n");
545 if (md->body->mbo_valid & OBD_MD_MEA) {
546 lmvsize = md->body->mbo_eadatasize;
547 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
550 GOTO(out, rc = -EPROTO);
552 rc = obd_unpackmd(md_exp, (void *)&md->lmv, lmv,
557 if (rc < (typeof(rc))sizeof(*md->lmv)) {
558 CDEBUG(D_INFO, "size too small: "
559 "rc < sizeof(*md->lmv) (%d < %d)\n",
560 rc, (int)sizeof(*md->lmv));
561 GOTO(out, rc = -EPROTO);
567 if (md->body->mbo_valid & OBD_MD_FLRMTPERM) {
568 /* remote permission */
569 LASSERT(client_is_remote(exp));
570 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
571 lustre_swab_mdt_remote_perm);
572 if (!md->remote_perm)
573 GOTO(out, rc = -EPROTO);
574 } else if (md->body->mbo_valid & OBD_MD_FLACL) {
575 /* for ACL, it's possible that FLACL is set but aclsize is zero.
576 * only when aclsize != 0 there's an actual segment for ACL
579 if (md->body->mbo_aclsize) {
580 rc = mdc_unpack_acl(req, md);
583 #ifdef CONFIG_FS_POSIX_ACL
585 md->posix_acl = NULL;
589 if (md->body->mbo_valid & OBD_MD_FLMDSCAPA) {
590 struct obd_capa *oc = NULL;
592 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc);
598 if (md->body->mbo_valid & OBD_MD_FLOSSCAPA) {
599 struct obd_capa *oc = NULL;
601 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc);
611 capa_put(md->oss_capa);
615 capa_put(md->mds_capa);
618 #ifdef CONFIG_FS_POSIX_ACL
619 posix_acl_release(md->posix_acl);
622 obd_free_memmd(dt_exp, &md->lsm);
627 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
634 * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING
637 void mdc_replay_open(struct ptlrpc_request *req)
639 struct md_open_data *mod = req->rq_cb_data;
640 struct ptlrpc_request *close_req;
641 struct obd_client_handle *och;
642 struct lustre_handle old;
643 struct mdt_body *body;
647 DEBUG_REQ(D_ERROR, req,
648 "Can't properly replay without open data.");
653 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
654 LASSERT(body != NULL);
658 struct lustre_handle *file_fh;
660 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
662 file_fh = &och->och_fh;
663 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
664 file_fh->cookie, body->mbo_handle.cookie);
666 *file_fh = body->mbo_handle;
668 close_req = mod->mod_close_req;
669 if (close_req != NULL) {
670 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
671 struct mdt_ioepoch *epoch;
673 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING);
674 epoch = req_capsule_client_get(&close_req->rq_pill,
679 LASSERT(!memcmp(&old, &epoch->handle, sizeof(old)));
680 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
681 epoch->handle = body->mbo_handle;
686 void mdc_commit_open(struct ptlrpc_request *req)
688 struct md_open_data *mod = req->rq_cb_data;
693 * No need to touch md_open_data::mod_och, it holds a reference on
694 * \var mod and will zero references to each other, \var mod will be
695 * freed after that when md_open_data::mod_och will put the reference.
699 * Do not let open request to disappear as it still may be needed
700 * for close rpc to happen (it may happen on evict only, otherwise
701 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
702 * called), just mark this rpc as committed to distinguish these 2
703 * cases, see mdc_close() for details. The open request reference will
704 * be put along with freeing \var mod.
706 ptlrpc_request_addref(req);
707 spin_lock(&req->rq_lock);
708 req->rq_committed = 1;
709 spin_unlock(&req->rq_lock);
710 req->rq_cb_data = NULL;
714 int mdc_set_open_replay_data(struct obd_export *exp,
715 struct obd_client_handle *och,
716 struct lookup_intent *it)
718 struct md_open_data *mod;
719 struct mdt_rec_create *rec;
720 struct mdt_body *body;
721 struct ptlrpc_request *open_req = it->d.lustre.it_data;
722 struct obd_import *imp = open_req->rq_import;
725 if (!open_req->rq_replay)
728 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
729 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
730 LASSERT(rec != NULL);
731 /* Incoming message in my byte order (it's been swabbed). */
732 /* Outgoing messages always in my byte order. */
733 LASSERT(body != NULL);
735 /* Only if the import is replayable, we set replay_open data */
736 if (och && imp->imp_replayable) {
737 mod = obd_mod_alloc();
739 DEBUG_REQ(D_ERROR, open_req,
740 "Can't allocate md_open_data");
745 * Take a reference on \var mod, to be freed on mdc_close().
746 * It protects \var mod from being freed on eviction (commit
747 * callback is called despite rq_replay flag).
748 * Another reference for \var och.
753 spin_lock(&open_req->rq_lock);
756 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
757 it_disposition(it, DISP_OPEN_STRIPE);
758 mod->mod_open_req = open_req;
759 open_req->rq_cb_data = mod;
760 open_req->rq_commit_cb = mdc_commit_open;
761 spin_unlock(&open_req->rq_lock);
764 rec->cr_fid2 = body->mbo_fid1;
765 rec->cr_ioepoch = body->mbo_ioepoch;
766 rec->cr_old_handle.cookie = body->mbo_handle.cookie;
767 open_req->rq_replay_cb = mdc_replay_open;
768 if (!fid_is_sane(&body->mbo_fid1)) {
769 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
774 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
778 static void mdc_free_open(struct md_open_data *mod)
782 if (mod->mod_is_create == 0 &&
783 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
786 LASSERT(mod->mod_open_req->rq_replay == 0);
788 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "free open request\n");
790 ptlrpc_request_committed(mod->mod_open_req, committed);
791 if (mod->mod_close_req)
792 ptlrpc_request_committed(mod->mod_close_req, committed);
795 int mdc_clear_open_replay_data(struct obd_export *exp,
796 struct obd_client_handle *och)
798 struct md_open_data *mod = och->och_mod;
802 * It is possible to not have \var mod in a case of eviction between
803 * lookup and ll_file_open().
808 LASSERT(mod != LP_POISON);
809 LASSERT(mod->mod_open_req != NULL);
819 /* Prepares the request for the replay by the given reply */
820 static void mdc_close_handle_reply(struct ptlrpc_request *req,
821 struct md_op_data *op_data, int rc) {
822 struct mdt_body *repbody;
823 struct mdt_ioepoch *epoch;
825 if (req && rc == -EAGAIN) {
826 repbody = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
827 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
829 epoch->flags |= MF_SOM_AU;
830 if (repbody->mbo_valid & OBD_MD_FLGETATTRLOCK)
831 op_data->op_flags |= MF_GETATTR_LOCK;
835 int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
836 struct md_open_data *mod, struct ptlrpc_request **request)
838 struct obd_device *obd = class_exp2obd(exp);
839 struct ptlrpc_request *req;
840 struct req_format *req_fmt;
845 req_fmt = &RQF_MDS_CLOSE;
846 if (op_data->op_bias & MDS_HSM_RELEASE) {
847 req_fmt = &RQF_MDS_RELEASE_CLOSE;
849 /* allocate a FID for volatile file */
850 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
852 CERROR("%s: "DFID" failed to allocate FID: %d\n",
853 obd->obd_name, PFID(&op_data->op_fid1), rc);
854 /* save the errcode and proceed to close */
860 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
864 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
866 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
868 ptlrpc_request_free(req);
872 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
873 * portal whose threads are not taking any DLM locks and are therefore
874 * always progressing */
875 req->rq_request_portal = MDS_READPAGE_PORTAL;
876 ptlrpc_at_set_req_timeout(req);
878 /* Ensure that this close's handle is fixed up during replay. */
879 if (likely(mod != NULL)) {
880 LASSERTF(mod->mod_open_req != NULL &&
881 mod->mod_open_req->rq_type != LI_POISON,
882 "POISONED open %p!\n", mod->mod_open_req);
884 mod->mod_close_req = req;
886 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
887 /* We no longer want to preserve this open for replay even
888 * though the open was committed. b=3632, b=3633 */
889 spin_lock(&mod->mod_open_req->rq_lock);
890 mod->mod_open_req->rq_replay = 0;
891 spin_unlock(&mod->mod_open_req->rq_lock);
893 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
896 mdc_close_pack(req, op_data);
898 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
899 obd->u.cli.cl_default_mds_easize);
900 req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
901 obd->u.cli.cl_default_mds_cookiesize);
903 ptlrpc_request_set_replen(req);
905 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
906 rc = ptlrpc_queue_wait(req);
907 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
909 if (req->rq_repmsg == NULL) {
910 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
913 rc = req->rq_status ?: -EIO;
914 } else if (rc == 0 || rc == -EAGAIN) {
915 struct mdt_body *body;
917 rc = lustre_msg_get_status(req->rq_repmsg);
918 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
919 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
924 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
927 } else if (rc == -ESTALE) {
929 * it can be allowed error after 3633 if open was committed and
930 * server failed before close was sent. Let's check if mod
931 * exists and return no error in that case
934 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
935 LASSERT(mod->mod_open_req != NULL);
936 if (mod->mod_open_req->rq_committed)
943 mod->mod_close_req = NULL;
944 /* Since now, mod is accessed through open_req only,
945 * thus close req does not keep a reference on mod anymore. */
949 mdc_close_handle_reply(req, op_data, rc);
950 RETURN(rc < 0 ? rc : saved_rc);
953 int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
954 struct md_open_data *mod)
956 struct obd_device *obd = class_exp2obd(exp);
957 struct ptlrpc_request *req;
961 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
962 &RQF_MDS_DONE_WRITING);
966 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
967 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
969 ptlrpc_request_free(req);
974 LASSERTF(mod->mod_open_req != NULL &&
975 mod->mod_open_req->rq_type != LI_POISON,
976 "POISONED setattr %p!\n", mod->mod_open_req);
978 mod->mod_close_req = req;
979 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr");
980 /* We no longer want to preserve this setattr for replay even
981 * though the open was committed. b=3632, b=3633 */
982 spin_lock(&mod->mod_open_req->rq_lock);
983 mod->mod_open_req->rq_replay = 0;
984 spin_unlock(&mod->mod_open_req->rq_lock);
987 mdc_close_pack(req, op_data);
988 ptlrpc_request_set_replen(req);
990 mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
991 rc = ptlrpc_queue_wait(req);
992 mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
996 * it can be allowed error after 3633 if open or setattr were
997 * committed and server failed before close was sent.
998 * Let's check if mod exists and return no error in that case
1001 LASSERT(mod->mod_open_req != NULL);
1002 if (mod->mod_open_req->rq_committed)
1009 mod->mod_close_req = NULL;
1010 LASSERT(mod->mod_open_req != NULL);
1013 /* Since now, mod is accessed through setattr req only,
1014 * thus DW req does not keep a reference on mod anymore. */
1018 mdc_close_handle_reply(req, op_data, rc);
1019 ptlrpc_req_finished(req);
1023 #ifdef HAVE_SPLIT_SUPPORT
1024 int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid,
1025 const struct page *page, int offset)
1027 struct ptlrpc_request *req;
1028 struct ptlrpc_bulk_desc *desc;
1032 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_WRITEPAGE);
1036 /* FIXME: capa doesn't support split yet */
1037 mdc_set_capa_size(req, &RMF_CAPA1, NULL);
1039 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_WRITEPAGE);
1041 ptlrpc_request_free(req);
1045 req->rq_request_portal = MDS_READPAGE_PORTAL;
1046 ptlrpc_at_set_req_timeout(req);
1048 desc = ptlrpc_prep_bulk_imp(req, 1, 1,BULK_GET_SOURCE, MDS_BULK_PORTAL);
1050 GOTO(out, rc = -ENOMEM);
1052 /* NB req now owns desc and will free it when it gets freed. */
1053 ptlrpc_prep_bulk_page(desc, (struct page *)page, 0, offset);
1054 mdc_readdir_pack(req, 0, offset, fid, NULL);
1056 ptlrpc_request_set_replen(req);
1057 rc = ptlrpc_queue_wait(req);
1061 rc = sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk);
1063 ptlrpc_req_finished(req);
1066 EXPORT_SYMBOL(mdc_sendpage);
1069 static int mdc_getpage(struct obd_export *exp, const struct lu_fid *fid,
1070 __u64 offset, struct obd_capa *oc,
1071 struct page **pages, int npages,
1072 struct ptlrpc_request **request)
1074 struct ptlrpc_request *req;
1075 struct ptlrpc_bulk_desc *desc;
1077 wait_queue_head_t waitq;
1079 struct l_wait_info lwi;
1084 init_waitqueue_head(&waitq);
1087 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
1091 mdc_set_capa_size(req, &RMF_CAPA1, oc);
1093 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
1095 ptlrpc_request_free(req);
1099 req->rq_request_portal = MDS_READPAGE_PORTAL;
1100 ptlrpc_at_set_req_timeout(req);
1102 desc = ptlrpc_prep_bulk_imp(req, npages, 1, BULK_PUT_SINK,
1105 ptlrpc_request_free(req);
1109 /* NB req now owns desc and will free it when it gets freed */
1110 for (i = 0; i < npages; i++)
1111 ptlrpc_prep_bulk_page_pin(desc, pages[i], 0, PAGE_CACHE_SIZE);
1113 mdc_readdir_pack(req, offset, PAGE_CACHE_SIZE * npages, fid, oc);
1115 ptlrpc_request_set_replen(req);
1116 rc = ptlrpc_queue_wait(req);
1118 ptlrpc_req_finished(req);
1119 if (rc != -ETIMEDOUT)
1123 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
1124 CERROR("%s: too many resend retries: rc = %d\n",
1125 exp->exp_obd->obd_name, -EIO);
1128 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1130 l_wait_event(waitq, 0, &lwi);
1135 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1136 req->rq_bulk->bd_nob_transferred);
1138 ptlrpc_req_finished(req);
1142 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
1143 CERROR("%s: unexpected bytes transferred: %d (%ld expected)\n",
1144 exp->exp_obd->obd_name, req->rq_bulk->bd_nob_transferred,
1145 PAGE_CACHE_SIZE * npages);
1146 ptlrpc_req_finished(req);
1154 static void mdc_release_page(struct page *page, int remove)
1158 if (likely(page->mapping != NULL))
1159 truncate_complete_page(page->mapping, page);
1162 page_cache_release(page);
1165 static struct page *mdc_page_locate(struct address_space *mapping, __u64 *hash,
1166 __u64 *start, __u64 *end, int hash64)
1169 * Complement of hash is used as an index so that
1170 * radix_tree_gang_lookup() can be used to find a page with starting
1171 * hash _smaller_ than one we are looking for.
1173 unsigned long offset = hash_x_index(*hash, hash64);
1177 spin_lock_irq(&mapping->tree_lock);
1178 found = radix_tree_gang_lookup(&mapping->page_tree,
1179 (void **)&page, offset, 1);
1180 if (found > 0 && !radix_tree_exceptional_entry(page)) {
1181 struct lu_dirpage *dp;
1183 page_cache_get(page);
1184 spin_unlock_irq(&mapping->tree_lock);
1186 * In contrast to find_lock_page() we are sure that directory
1187 * page cannot be truncated (while DLM lock is held) and,
1188 * hence, can avoid restart.
1190 * In fact, page cannot be locked here at all, because
1191 * mdc_read_page_remote does synchronous io.
1193 wait_on_page_locked(page);
1194 if (PageUptodate(page)) {
1196 if (BITS_PER_LONG == 32 && hash64) {
1197 *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1198 *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1199 *hash = *hash >> 32;
1201 *start = le64_to_cpu(dp->ldp_hash_start);
1202 *end = le64_to_cpu(dp->ldp_hash_end);
1204 if (unlikely(*start == 1 && *hash == 0))
1207 LASSERTF(*start <= *hash, "start = "LPX64
1208 ",end = "LPX64",hash = "LPX64"\n",
1209 *start, *end, *hash);
1210 CDEBUG(D_VFSTRACE, "offset %lx ["LPX64" "LPX64"],"
1211 " hash "LPX64"\n", offset, *start, *end, *hash);
1214 mdc_release_page(page, 0);
1216 } else if (*end != *start && *hash == *end) {
1218 * upon hash collision, remove this page,
1219 * otherwise put page reference, and
1220 * mdc_read_page_remote() will issue RPC to
1221 * fetch the page we want.
1224 mdc_release_page(page,
1225 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1229 page_cache_release(page);
1230 page = ERR_PTR(-EIO);
1233 spin_unlock_irq(&mapping->tree_lock);
1240 * Adjust a set of pages, each page containing an array of lu_dirpages,
1241 * so that each page can be used as a single logical lu_dirpage.
1243 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
1244 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
1245 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
1246 * value is used as a cookie to request the next lu_dirpage in a
1247 * directory listing that spans multiple pages (two in this example):
1250 * .|--------v------- -----.
1251 * |s|e|f|p|ent|ent| ... |ent|
1252 * '--|-------------- -----' Each CFS_PAGE contains a single
1253 * '------. lu_dirpage.
1254 * .---------v------- -----.
1255 * |s|e|f|p|ent| 0 | ... | 0 |
1256 * '----------------- -----'
1258 * However, on hosts where the native VM page size (PAGE_CACHE_SIZE) is
1259 * larger than LU_PAGE_SIZE, a single host page may contain multiple
1260 * lu_dirpages. After reading the lu_dirpages from the MDS, the
1261 * ldp_hash_end of the first lu_dirpage refers to the one immediately
1262 * after it in the same CFS_PAGE (arrows simplified for brevity, but
1263 * in general e0==s1, e1==s2, etc.):
1265 * .-------------------- -----.
1266 * |s0|e0|f0|p|ent|ent| ... |ent|
1267 * |---v---------------- -----|
1268 * |s1|e1|f1|p|ent|ent| ... |ent|
1269 * |---v---------------- -----| Here, each CFS_PAGE contains
1270 * ... multiple lu_dirpages.
1271 * |---v---------------- -----|
1272 * |s'|e'|f'|p|ent|ent| ... |ent|
1273 * '---|---------------- -----'
1275 * .----------------------------.
1278 * This structure is transformed into a single logical lu_dirpage as follows:
1280 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
1281 * labeled 'next CFS_PAGE'.
1283 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
1284 * a hash collision with the next page exists.
1286 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
1287 * to the first entry of the next lu_dirpage.
1289 #if PAGE_CACHE_SIZE > LU_PAGE_SIZE
1290 static void mdc_adjust_dirpages(struct page **pages, int cfs_pgs, int lu_pgs)
1294 for (i = 0; i < cfs_pgs; i++) {
1295 struct lu_dirpage *dp = kmap(pages[i]);
1296 struct lu_dirpage *first = dp;
1297 struct lu_dirent *end_dirent = NULL;
1298 struct lu_dirent *ent;
1299 __u64 hash_end = le64_to_cpu(dp->ldp_hash_end);
1300 __u32 flags = le32_to_cpu(dp->ldp_flags);
1302 while (--lu_pgs > 0) {
1303 ent = lu_dirent_start(dp);
1304 for (end_dirent = ent; ent != NULL;
1305 end_dirent = ent, ent = lu_dirent_next(ent));
1307 /* Advance dp to next lu_dirpage. */
1308 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
1310 /* Check if we've reached the end of the CFS_PAGE. */
1311 if (!((unsigned long)dp & ~CFS_PAGE_MASK))
1314 /* Save the hash and flags of this lu_dirpage. */
1315 hash_end = le64_to_cpu(dp->ldp_hash_end);
1316 flags = le32_to_cpu(dp->ldp_flags);
1318 /* Check if lu_dirpage contains no entries. */
1319 if (end_dirent == NULL)
1322 /* Enlarge the end entry lde_reclen from 0 to
1323 * first entry of next lu_dirpage. */
1324 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
1325 end_dirent->lde_reclen =
1326 cpu_to_le16((char *)(dp->ldp_entries) -
1327 (char *)end_dirent);
1330 first->ldp_hash_end = hash_end;
1331 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
1332 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
1336 LASSERTF(lu_pgs == 0, "left = %d\n", lu_pgs);
1339 #define mdc_adjust_dirpages(pages, cfs_pgs, lu_pgs) do {} while (0)
1340 #endif /* PAGE_CACHE_SIZE > LU_PAGE_SIZE */
1342 /* parameters for readdir page */
1343 struct readpage_param {
1344 struct md_op_data *rp_mod;
1347 struct obd_export *rp_exp;
1348 struct md_callback *rp_cb;
1352 * Read pages from server.
1354 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
1355 * a header lu_dirpage which describes the start/end hash, and whether this
1356 * page is empty (contains no dir entry) or hash collide with next page.
1357 * After client receives reply, several pages will be integrated into dir page
1358 * in CFS_PAGE_SIZE (if CFS_PAGE_SIZE greater than LU_PAGE_SIZE), and the
1359 * lu_dirpage for this integrated page will be adjusted.
1361 static int mdc_read_page_remote(void *data, struct page *page0)
1363 struct readpage_param *rp = data;
1364 struct page **page_pool;
1366 struct lu_dirpage *dp;
1367 int rd_pgs = 0; /* number of pages read actually */
1369 struct md_op_data *op_data = rp->rp_mod;
1370 struct ptlrpc_request *req;
1371 int max_pages = op_data->op_max_pages;
1372 struct inode *inode;
1378 LASSERT(max_pages > 0 && max_pages <= PTLRPC_MAX_BRW_PAGES);
1379 inode = op_data->op_data;
1380 fid = &op_data->op_fid1;
1381 LASSERT(inode != NULL);
1383 OBD_ALLOC(page_pool, sizeof(page_pool[0]) * max_pages);
1384 if (page_pool != NULL) {
1385 page_pool[0] = page0;
1391 for (npages = 1; npages < max_pages; npages++) {
1392 page = page_cache_alloc_cold(inode->i_mapping);
1395 page_pool[npages] = page;
1398 rc = mdc_getpage(rp->rp_exp, fid, rp->rp_off, op_data->op_capa1,
1399 page_pool, npages, &req);
1403 rd_pgs = (req->rq_bulk->bd_nob_transferred +
1404 PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
1405 lu_pgs = req->rq_bulk->bd_nob_transferred >>
1407 LASSERT(!(req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
1409 CDEBUG(D_INODE, "read %d(%d) pages\n", rd_pgs, lu_pgs);
1411 mdc_adjust_dirpages(page_pool, rd_pgs, lu_pgs);
1413 SetPageUptodate(page0);
1417 ptlrpc_req_finished(req);
1418 CDEBUG(D_CACHE, "read %d/%d pages\n", rd_pgs, npages);
1419 for (i = 1; i < npages; i++) {
1420 unsigned long offset;
1424 page = page_pool[i];
1426 if (rc < 0 || i >= rd_pgs) {
1427 page_cache_release(page);
1431 SetPageUptodate(page);
1434 hash = le64_to_cpu(dp->ldp_hash_start);
1437 offset = hash_x_index(hash, rp->rp_hash64);
1439 prefetchw(&page->flags);
1440 ret = add_to_page_cache_lru(page, inode->i_mapping, offset,
1445 CDEBUG(D_VFSTRACE, "page %lu add to page cache failed:"
1446 " rc = %d\n", offset, ret);
1447 page_cache_release(page);
1450 if (page_pool != &page0)
1451 OBD_FREE(page_pool, sizeof(page_pool[0]) * max_pages);
1457 * Read dir page from cache first, if it can not find it, read it from
1458 * server and add into the cache.
1460 * \param[in] exp MDC export
1461 * \param[in] op_data client MD stack parameters, transfering parameters
1462 * between different layers on client MD stack.
1463 * \param[in] cb_op callback required for ldlm lock enqueue during
1465 * \param[in] hash_offset the hash offset of the page to be read
1466 * \param[in] ppage the page to be read
1468 * retval = 0 get the page successfully
1469 * errno(<0) get the page failed
1471 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1472 struct md_callback *cb_op, __u64 hash_offset,
1473 struct page **ppage)
1475 struct lookup_intent it = { .it_op = IT_READDIR };
1477 struct inode *dir = op_data->op_data;
1478 struct address_space *mapping;
1479 struct lu_dirpage *dp;
1482 struct lustre_handle lockh;
1483 struct ptlrpc_request *enq_req = NULL;
1484 struct readpage_param rp_param;
1491 LASSERT(dir != NULL);
1492 mapping = dir->i_mapping;
1494 rc = mdc_intent_lock(exp, op_data, &it, &enq_req,
1495 cb_op->md_blocking_ast, 0);
1496 if (enq_req != NULL)
1497 ptlrpc_req_finished(enq_req);
1500 CERROR("%s: "DFID" lock enqueue fails: rc = %d\n",
1501 exp->exp_obd->obd_name, PFID(&op_data->op_fid1), rc);
1506 mdc_set_lock_data(exp, &it.d.lustre.it_lock_handle, dir, NULL);
1508 rp_param.rp_off = hash_offset;
1509 rp_param.rp_hash64 = op_data->op_cli_flags & CLI_HASH64;
1510 page = mdc_page_locate(mapping, &rp_param.rp_off, &start, &end,
1511 rp_param.rp_hash64);
1513 CERROR("%s: dir page locate: "DFID" at "LPU64": rc %ld\n",
1514 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1515 rp_param.rp_off, PTR_ERR(page));
1516 GOTO(out_unlock, rc = PTR_ERR(page));
1517 } else if (page != NULL) {
1519 * XXX nikita: not entirely correct handling of a corner case:
1520 * suppose hash chain of entries with hash value HASH crosses
1521 * border between pages P0 and P1. First both P0 and P1 are
1522 * cached, seekdir() is called for some entry from the P0 part
1523 * of the chain. Later P0 goes out of cache. telldir(HASH)
1524 * happens and finds P1, as it starts with matching hash
1525 * value. Remaining entries from P0 part of the chain are
1526 * skipped. (Is that really a bug?)
1528 * Possible solutions: 0. don't cache P1 is such case, handle
1529 * it as an "overflow" page. 1. invalidate all pages at
1530 * once. 2. use HASH|1 as an index for P1.
1532 GOTO(hash_collision, page);
1535 rp_param.rp_exp = exp;
1536 rp_param.rp_mod = op_data;
1537 page = read_cache_page(mapping,
1538 hash_x_index(rp_param.rp_off,
1539 rp_param.rp_hash64),
1540 mdc_read_page_remote, &rp_param);
1542 CERROR("%s: read cache page: "DFID" at "LPU64": rc %ld\n",
1543 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1544 rp_param.rp_off, PTR_ERR(page));
1545 GOTO(out_unlock, rc = PTR_ERR(page));
1548 wait_on_page_locked(page);
1550 if (!PageUptodate(page)) {
1551 CERROR("%s: page not updated: "DFID" at "LPU64": rc %d\n",
1552 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1553 rp_param.rp_off, -5);
1556 if (!PageChecked(page))
1557 SetPageChecked(page);
1558 if (PageError(page)) {
1559 CERROR("%s: page error: "DFID" at "LPU64": rc %d\n",
1560 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1561 rp_param.rp_off, -5);
1566 dp = page_address(page);
1567 if (BITS_PER_LONG == 32 && rp_param.rp_hash64) {
1568 start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1569 end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1570 rp_param.rp_off = hash_offset >> 32;
1572 start = le64_to_cpu(dp->ldp_hash_start);
1573 end = le64_to_cpu(dp->ldp_hash_end);
1574 rp_param.rp_off = hash_offset;
1577 LASSERT(start == rp_param.rp_off);
1578 CWARN("Page-wide hash collision: %#lx\n", (unsigned long)end);
1579 #if BITS_PER_LONG == 32
1580 CWARN("Real page-wide hash collision at ["LPU64" "LPU64"] with "
1581 "hash "LPU64"\n", le64_to_cpu(dp->ldp_hash_start),
1582 le64_to_cpu(dp->ldp_hash_end), hash_offset);
1586 * Fetch whole overflow chain...
1594 lockh.cookie = it.d.lustre.it_lock_handle;
1595 ldlm_lock_decref(&lockh, it.d.lustre.it_lock_mode);
1596 it.d.lustre.it_lock_handle = 0;
1600 mdc_release_page(page, 1);
1606 static int mdc_statfs(const struct lu_env *env,
1607 struct obd_export *exp, struct obd_statfs *osfs,
1608 __u64 max_age, __u32 flags)
1610 struct obd_device *obd = class_exp2obd(exp);
1611 struct ptlrpc_request *req;
1612 struct obd_statfs *msfs;
1613 struct obd_import *imp = NULL;
1618 * Since the request might also come from lprocfs, so we need
1619 * sync this with client_disconnect_export Bug15684
1621 down_read(&obd->u.cli.cl_sem);
1622 if (obd->u.cli.cl_import)
1623 imp = class_import_get(obd->u.cli.cl_import);
1624 up_read(&obd->u.cli.cl_sem);
1628 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1629 LUSTRE_MDS_VERSION, MDS_STATFS);
1631 GOTO(output, rc = -ENOMEM);
1633 ptlrpc_request_set_replen(req);
1635 if (flags & OBD_STATFS_NODELAY) {
1636 /* procfs requests not want stay in wait for avoid deadlock */
1637 req->rq_no_resend = 1;
1638 req->rq_no_delay = 1;
1641 rc = ptlrpc_queue_wait(req);
1643 /* check connection error first */
1644 if (imp->imp_connect_error)
1645 rc = imp->imp_connect_error;
1649 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1651 GOTO(out, rc = -EPROTO);
1656 ptlrpc_req_finished(req);
1658 class_import_put(imp);
1662 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1664 __u32 keylen, vallen;
1668 if (gf->gf_pathlen > PATH_MAX)
1669 RETURN(-ENAMETOOLONG);
1670 if (gf->gf_pathlen < 2)
1673 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1674 keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
1675 OBD_ALLOC(key, keylen);
1678 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1679 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1681 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n",
1682 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1684 if (!fid_is_sane(&gf->gf_fid))
1685 GOTO(out, rc = -EINVAL);
1687 /* Val is struct getinfo_fid2path result plus path */
1688 vallen = sizeof(*gf) + gf->gf_pathlen;
1690 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf, NULL);
1691 if (rc != 0 && rc != -EREMOTE)
1694 if (vallen <= sizeof(*gf))
1695 GOTO(out, rc = -EPROTO);
1696 else if (vallen > sizeof(*gf) + gf->gf_pathlen)
1697 GOTO(out, rc = -EOVERFLOW);
1699 CDEBUG(D_IOCTL, "path get "DFID" from "LPU64" #%d\n%s\n",
1700 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);
1703 OBD_FREE(key, keylen);
1707 static int mdc_ioc_hsm_progress(struct obd_export *exp,
1708 struct hsm_progress_kernel *hpk)
1710 struct obd_import *imp = class_exp2cliimp(exp);
1711 struct hsm_progress_kernel *req_hpk;
1712 struct ptlrpc_request *req;
1716 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1717 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1719 GOTO(out, rc = -ENOMEM);
1721 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
1723 /* Copy hsm_progress struct */
1724 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1725 if (req_hpk == NULL)
1726 GOTO(out, rc = -EPROTO);
1729 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
1731 ptlrpc_request_set_replen(req);
1733 rc = mdc_queue_wait(req);
1736 ptlrpc_req_finished(req);
1740 static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
1742 __u32 *archive_mask;
1743 struct ptlrpc_request *req;
1747 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
1749 MDS_HSM_CT_REGISTER);
1751 GOTO(out, rc = -ENOMEM);
1753 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
1755 /* Copy hsm_progress struct */
1756 archive_mask = req_capsule_client_get(&req->rq_pill,
1757 &RMF_MDS_HSM_ARCHIVE);
1758 if (archive_mask == NULL)
1759 GOTO(out, rc = -EPROTO);
1761 *archive_mask = archives;
1763 ptlrpc_request_set_replen(req);
1765 rc = mdc_queue_wait(req);
1768 ptlrpc_req_finished(req);
1772 static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1773 struct md_op_data *op_data)
1775 struct hsm_current_action *hca = op_data->op_data;
1776 struct hsm_current_action *req_hca;
1777 struct ptlrpc_request *req;
1781 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1782 &RQF_MDS_HSM_ACTION);
1786 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1788 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1790 ptlrpc_request_free(req);
1794 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1795 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1797 ptlrpc_request_set_replen(req);
1799 rc = mdc_queue_wait(req);
1803 req_hca = req_capsule_server_get(&req->rq_pill,
1804 &RMF_MDS_HSM_CURRENT_ACTION);
1805 if (req_hca == NULL)
1806 GOTO(out, rc = -EPROTO);
1812 ptlrpc_req_finished(req);
1816 static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1818 struct ptlrpc_request *req;
1822 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1824 MDS_HSM_CT_UNREGISTER);
1826 GOTO(out, rc = -ENOMEM);
1828 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
1830 ptlrpc_request_set_replen(req);
1832 rc = mdc_queue_wait(req);
1835 ptlrpc_req_finished(req);
1839 static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1840 struct md_op_data *op_data)
1842 struct hsm_user_state *hus = op_data->op_data;
1843 struct hsm_user_state *req_hus;
1844 struct ptlrpc_request *req;
1848 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1849 &RQF_MDS_HSM_STATE_GET);
1853 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1855 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1857 ptlrpc_request_free(req);
1861 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1862 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1864 ptlrpc_request_set_replen(req);
1866 rc = mdc_queue_wait(req);
1870 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1871 if (req_hus == NULL)
1872 GOTO(out, rc = -EPROTO);
1878 ptlrpc_req_finished(req);
1882 static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1883 struct md_op_data *op_data)
1885 struct hsm_state_set *hss = op_data->op_data;
1886 struct hsm_state_set *req_hss;
1887 struct ptlrpc_request *req;
1891 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1892 &RQF_MDS_HSM_STATE_SET);
1896 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
1898 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1900 ptlrpc_request_free(req);
1904 mdc_pack_body(req, &op_data->op_fid1, op_data->op_capa1,
1905 OBD_MD_FLRMTPERM, 0, op_data->op_suppgids[0], 0);
1908 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1909 if (req_hss == NULL)
1910 GOTO(out, rc = -EPROTO);
1913 ptlrpc_request_set_replen(req);
1915 rc = mdc_queue_wait(req);
1920 ptlrpc_req_finished(req);
1924 static int mdc_ioc_hsm_request(struct obd_export *exp,
1925 struct hsm_user_request *hur)
1927 struct obd_import *imp = class_exp2cliimp(exp);
1928 struct ptlrpc_request *req;
1929 struct hsm_request *req_hr;
1930 struct hsm_user_item *req_hui;
1935 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1937 GOTO(out, rc = -ENOMEM);
1939 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1940 hur->hur_request.hr_itemcount
1941 * sizeof(struct hsm_user_item));
1942 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1943 hur->hur_request.hr_data_len);
1945 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1947 ptlrpc_request_free(req);
1951 mdc_pack_body(req, NULL, NULL, OBD_MD_FLRMTPERM, 0, -1, 0);
1953 /* Copy hsm_request struct */
1954 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
1956 GOTO(out, rc = -EPROTO);
1957 *req_hr = hur->hur_request;
1959 /* Copy hsm_user_item structs */
1960 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
1961 if (req_hui == NULL)
1962 GOTO(out, rc = -EPROTO);
1963 memcpy(req_hui, hur->hur_user_item,
1964 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
1966 /* Copy opaque field */
1967 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
1968 if (req_opaque == NULL)
1969 GOTO(out, rc = -EPROTO);
1970 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
1972 ptlrpc_request_set_replen(req);
1974 rc = mdc_queue_wait(req);
1978 ptlrpc_req_finished(req);
1982 static struct kuc_hdr *changelog_kuc_hdr(char *buf, size_t len, __u32 flags)
1984 struct kuc_hdr *lh = (struct kuc_hdr *)buf;
1986 LASSERT(len <= KUC_CHANGELOG_MSG_MAXSIZE);
1988 lh->kuc_magic = KUC_MAGIC;
1989 lh->kuc_transport = KUC_TRANSPORT_CHANGELOG;
1990 lh->kuc_flags = flags;
1991 lh->kuc_msgtype = CL_RECORD;
1992 lh->kuc_msglen = len;
1996 struct changelog_show {
1998 enum changelog_send_flag cs_flags;
2001 struct obd_device *cs_obd;
2004 static inline char *cs_obd_name(struct changelog_show *cs)
2006 return cs->cs_obd->obd_name;
2009 static int changelog_kkuc_cb(const struct lu_env *env, struct llog_handle *llh,
2010 struct llog_rec_hdr *hdr, void *data)
2012 struct changelog_show *cs = data;
2013 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
2019 if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
2021 CERROR("%s: not a changelog rec %x/%d: rc = %d\n",
2022 cs_obd_name(cs), rec->cr_hdr.lrh_type,
2023 rec->cr.cr_type, rc);
2027 if (rec->cr.cr_index < cs->cs_startrec) {
2028 /* Skip entries earlier than what we are interested in */
2029 CDEBUG(D_HSM, "rec="LPU64" start="LPU64"\n",
2030 rec->cr.cr_index, cs->cs_startrec);
2034 CDEBUG(D_HSM, LPU64" %02d%-5s "LPU64" 0x%x t="DFID" p="DFID" %.*s\n",
2035 rec->cr.cr_index, rec->cr.cr_type,
2036 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
2037 rec->cr.cr_flags & CLF_FLAGMASK,
2038 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
2039 rec->cr.cr_namelen, changelog_rec_name(&rec->cr));
2041 len = sizeof(*lh) + changelog_rec_size(&rec->cr) + rec->cr.cr_namelen;
2043 /* Set up the message */
2044 lh = changelog_kuc_hdr(cs->cs_buf, len, cs->cs_flags);
2045 memcpy(lh + 1, &rec->cr, len - sizeof(*lh));
2047 rc = libcfs_kkuc_msg_put(cs->cs_fp, lh);
2048 CDEBUG(D_HSM, "kucmsg fp %p len %zu rc %d\n", cs->cs_fp, len, rc);
2053 static int mdc_changelog_send_thread(void *csdata)
2055 struct changelog_show *cs = csdata;
2056 struct llog_ctxt *ctxt = NULL;
2057 struct llog_handle *llh = NULL;
2058 struct kuc_hdr *kuch;
2059 enum llog_flag flags = LLOG_F_IS_CAT;
2062 CDEBUG(D_HSM, "changelog to fp=%p start "LPU64"\n",
2063 cs->cs_fp, cs->cs_startrec);
2065 OBD_ALLOC(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
2066 if (cs->cs_buf == NULL)
2067 GOTO(out, rc = -ENOMEM);
2069 /* Set up the remote catalog handle */
2070 ctxt = llog_get_context(cs->cs_obd, LLOG_CHANGELOG_REPL_CTXT);
2072 GOTO(out, rc = -ENOENT);
2073 rc = llog_open(NULL, ctxt, &llh, NULL, CHANGELOG_CATALOG,
2076 CERROR("%s: fail to open changelog catalog: rc = %d\n",
2077 cs_obd_name(cs), rc);
2081 if (cs->cs_flags & CHANGELOG_FLAG_JOBID)
2082 flags |= LLOG_F_EXT_JOBID;
2084 rc = llog_init_handle(NULL, llh, flags, NULL);
2086 CERROR("llog_init_handle failed %d\n", rc);
2090 rc = llog_cat_process(NULL, llh, changelog_kkuc_cb, cs, 0, 0);
2092 /* Send EOF no matter what our result */
2093 if ((kuch = changelog_kuc_hdr(cs->cs_buf, sizeof(*kuch),
2095 kuch->kuc_msgtype = CL_EOF;
2096 libcfs_kkuc_msg_put(cs->cs_fp, kuch);
2102 llog_cat_close(NULL, llh);
2104 llog_ctxt_put(ctxt);
2106 OBD_FREE(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
2111 static int mdc_ioc_changelog_send(struct obd_device *obd,
2112 struct ioc_changelog *icc)
2114 struct changelog_show *cs;
2115 struct task_struct *task;
2118 /* Freed in mdc_changelog_send_thread */
2124 cs->cs_startrec = icc->icc_recno;
2125 /* matching fput in mdc_changelog_send_thread */
2126 cs->cs_fp = fget(icc->icc_id);
2127 cs->cs_flags = icc->icc_flags;
2130 * New thread because we should return to user app before
2131 * writing into our pipe
2133 task = kthread_run(mdc_changelog_send_thread, cs,
2134 "mdc_clg_send_thread");
2137 CERROR("%s: cannot start changelog thread: rc = %d\n",
2138 cs_obd_name(cs), rc);
2142 CDEBUG(D_HSM, "%s: started changelog thread\n",
2149 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2150 struct lustre_kernelcomm *lk);
2152 static int mdc_quotacheck(struct obd_device *unused, struct obd_export *exp,
2153 struct obd_quotactl *oqctl)
2155 struct client_obd *cli = &exp->exp_obd->u.cli;
2156 struct ptlrpc_request *req;
2157 struct obd_quotactl *body;
2161 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
2162 &RQF_MDS_QUOTACHECK, LUSTRE_MDS_VERSION,
2167 body = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2170 ptlrpc_request_set_replen(req);
2172 /* the next poll will find -ENODATA, that means quotacheck is
2174 cli->cl_qchk_stat = -ENODATA;
2175 rc = ptlrpc_queue_wait(req);
2177 cli->cl_qchk_stat = rc;
2178 ptlrpc_req_finished(req);
2182 static int mdc_quota_poll_check(struct obd_export *exp,
2183 struct if_quotacheck *qchk)
2185 struct client_obd *cli = &exp->exp_obd->u.cli;
2189 qchk->obd_uuid = cli->cl_target_uuid;
2190 memcpy(qchk->obd_type, LUSTRE_MDS_NAME, strlen(LUSTRE_MDS_NAME));
2192 rc = cli->cl_qchk_stat;
2193 /* the client is not the previous one */
2194 if (rc == CL_NOT_QUOTACHECKED)
2199 static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
2200 struct obd_quotactl *oqctl)
2202 struct ptlrpc_request *req;
2203 struct obd_quotactl *oqc;
2207 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
2208 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
2213 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
2216 ptlrpc_request_set_replen(req);
2217 ptlrpc_at_set_req_timeout(req);
2218 req->rq_no_resend = 1;
2220 rc = ptlrpc_queue_wait(req);
2222 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
2224 if (req->rq_repmsg &&
2225 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
2228 CERROR ("Can't unpack obd_quotactl\n");
2231 ptlrpc_req_finished(req);
2236 static int mdc_ioc_swap_layouts(struct obd_export *exp,
2237 struct md_op_data *op_data)
2239 struct list_head cancels = LIST_HEAD_INIT(cancels);
2240 struct ptlrpc_request *req;
2242 struct mdc_swap_layouts *msl, *payload;
2245 msl = op_data->op_data;
2247 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
2248 * first thing it will do is to cancel the 2 layout
2249 * locks hold by this client.
2250 * So the client must cancel its layout locks on the 2 fids
2251 * with the request RPC to avoid extra RPC round trips
2253 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
2254 LCK_EX, MDS_INODELOCK_LAYOUT |
2255 MDS_INODELOCK_XATTR);
2256 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
2257 LCK_EX, MDS_INODELOCK_LAYOUT |
2258 MDS_INODELOCK_XATTR);
2260 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2261 &RQF_MDS_SWAP_LAYOUTS);
2263 ldlm_lock_list_put(&cancels, l_bl_ast, count);
2267 mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
2268 mdc_set_capa_size(req, &RMF_CAPA2, op_data->op_capa2);
2270 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
2272 ptlrpc_request_free(req);
2276 mdc_swap_layouts_pack(req, op_data);
2278 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
2283 ptlrpc_request_set_replen(req);
2285 rc = ptlrpc_queue_wait(req);
2291 ptlrpc_req_finished(req);
2295 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2296 void *karg, void __user *uarg)
2298 struct obd_device *obd = exp->exp_obd;
2299 struct obd_ioctl_data *data = karg;
2300 struct obd_import *imp = obd->u.cli.cl_import;
2304 if (!try_module_get(THIS_MODULE)) {
2305 CERROR("%s: cannot get module '%s'\n", obd->obd_name,
2306 module_name(THIS_MODULE));
2310 case OBD_IOC_CHANGELOG_SEND:
2311 rc = mdc_ioc_changelog_send(obd, karg);
2313 case OBD_IOC_CHANGELOG_CLEAR: {
2314 struct ioc_changelog *icc = karg;
2315 struct changelog_setinfo cs =
2316 {.cs_recno = icc->icc_recno, .cs_id = icc->icc_id};
2317 rc = obd_set_info_async(NULL, exp, strlen(KEY_CHANGELOG_CLEAR),
2318 KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
2322 case OBD_IOC_FID2PATH:
2323 rc = mdc_ioc_fid2path(exp, karg);
2325 case LL_IOC_HSM_CT_START:
2326 rc = mdc_ioc_hsm_ct_start(exp, karg);
2327 /* ignore if it was already registered on this MDS. */
2331 case LL_IOC_HSM_PROGRESS:
2332 rc = mdc_ioc_hsm_progress(exp, karg);
2334 case LL_IOC_HSM_STATE_GET:
2335 rc = mdc_ioc_hsm_state_get(exp, karg);
2337 case LL_IOC_HSM_STATE_SET:
2338 rc = mdc_ioc_hsm_state_set(exp, karg);
2340 case LL_IOC_HSM_ACTION:
2341 rc = mdc_ioc_hsm_current_action(exp, karg);
2343 case LL_IOC_HSM_REQUEST:
2344 rc = mdc_ioc_hsm_request(exp, karg);
2346 case OBD_IOC_CLIENT_RECOVER:
2347 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
2351 case IOC_OSC_SET_ACTIVE:
2352 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
2354 case OBD_IOC_POLL_QUOTACHECK:
2355 rc = mdc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2357 case OBD_IOC_PING_TARGET:
2358 rc = ptlrpc_obd_ping(obd);
2361 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
2362 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
2363 * there'd be no LMV layer thus we might be called here. Eventually
2364 * this code should be removed.
2367 case IOC_OBD_STATFS: {
2368 struct obd_statfs stat_buf = {0};
2370 if (*((__u32 *) data->ioc_inlbuf2) != 0)
2371 GOTO(out, rc = -ENODEV);
2374 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
2375 min((int)data->ioc_plen2,
2376 (int)sizeof(struct obd_uuid))))
2377 GOTO(out, rc = -EFAULT);
2379 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
2380 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
2385 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
2386 min((int) data->ioc_plen1,
2387 (int) sizeof(stat_buf))))
2388 GOTO(out, rc = -EFAULT);
2392 case OBD_IOC_QUOTACTL: {
2393 struct if_quotactl *qctl = karg;
2394 struct obd_quotactl *oqctl;
2396 OBD_ALLOC_PTR(oqctl);
2398 GOTO(out, rc = -ENOMEM);
2400 QCTL_COPY(oqctl, qctl);
2401 rc = obd_quotactl(exp, oqctl);
2403 QCTL_COPY(qctl, oqctl);
2404 qctl->qc_valid = QC_MDTIDX;
2405 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
2408 OBD_FREE_PTR(oqctl);
2411 case LL_IOC_GET_CONNECT_FLAGS:
2412 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
2413 sizeof(*exp_connect_flags_ptr(exp))))
2414 GOTO(out, rc = -EFAULT);
2417 case LL_IOC_LOV_SWAP_LAYOUTS:
2418 rc = mdc_ioc_swap_layouts(exp, karg);
2421 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
2422 GOTO(out, rc = -ENOTTY);
2425 module_put(THIS_MODULE);
2430 int mdc_get_info_rpc(struct obd_export *exp,
2431 obd_count keylen, void *key,
2432 int vallen, void *val)
2434 struct obd_import *imp = class_exp2cliimp(exp);
2435 struct ptlrpc_request *req;
2440 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
2444 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
2445 RCL_CLIENT, keylen);
2446 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
2447 RCL_CLIENT, sizeof(__u32));
2449 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
2451 ptlrpc_request_free(req);
2455 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
2456 memcpy(tmp, key, keylen);
2457 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
2458 memcpy(tmp, &vallen, sizeof(__u32));
2460 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
2461 RCL_SERVER, vallen);
2462 ptlrpc_request_set_replen(req);
2464 rc = ptlrpc_queue_wait(req);
2465 /* -EREMOTE means the get_info result is partial, and it needs to
2466 * continue on another MDT, see fid2path part in lmv_iocontrol */
2467 if (rc == 0 || rc == -EREMOTE) {
2468 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
2469 memcpy(val, tmp, vallen);
2470 if (ptlrpc_rep_need_swab(req)) {
2471 if (KEY_IS(KEY_FID2PATH))
2472 lustre_swab_fid2path(val);
2475 ptlrpc_req_finished(req);
2480 static void lustre_swab_hai(struct hsm_action_item *h)
2482 __swab32s(&h->hai_len);
2483 __swab32s(&h->hai_action);
2484 lustre_swab_lu_fid(&h->hai_fid);
2485 lustre_swab_lu_fid(&h->hai_dfid);
2486 __swab64s(&h->hai_cookie);
2487 __swab64s(&h->hai_extent.offset);
2488 __swab64s(&h->hai_extent.length);
2489 __swab64s(&h->hai_gid);
2492 static void lustre_swab_hal(struct hsm_action_list *h)
2494 struct hsm_action_item *hai;
2497 __swab32s(&h->hal_version);
2498 __swab32s(&h->hal_count);
2499 __swab32s(&h->hal_archive_id);
2500 __swab64s(&h->hal_flags);
2502 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
2503 lustre_swab_hai(hai);
2506 static void lustre_swab_kuch(struct kuc_hdr *l)
2508 __swab16s(&l->kuc_magic);
2509 /* __u8 l->kuc_transport */
2510 __swab16s(&l->kuc_msgtype);
2511 __swab16s(&l->kuc_msglen);
2514 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2515 struct lustre_kernelcomm *lk)
2517 struct obd_import *imp = class_exp2cliimp(exp);
2518 __u32 archive = lk->lk_data;
2521 if (lk->lk_group != KUC_GRP_HSM) {
2522 CERROR("Bad copytool group %d\n", lk->lk_group);
2526 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2527 lk->lk_uid, lk->lk_group, lk->lk_flags);
2529 if (lk->lk_flags & LK_FLG_STOP) {
2530 /* Unregister with the coordinator */
2531 rc = mdc_ioc_hsm_ct_unregister(imp);
2533 rc = mdc_ioc_hsm_ct_register(imp, archive);
2540 * Send a message to any listening copytools
2541 * @param val KUC message (kuc_hdr + hsm_action_list)
2542 * @param len total length of message
2544 static int mdc_hsm_copytool_send(size_t len, void *val)
2546 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2547 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2551 if (len < sizeof(*lh) + sizeof(*hal)) {
2552 CERROR("Short HSM message %zu < %zu\n", len,
2553 sizeof(*lh) + sizeof(*hal));
2556 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2557 lustre_swab_kuch(lh);
2558 lustre_swab_hal(hal);
2559 } else if (lh->kuc_magic != KUC_MAGIC) {
2560 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2564 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2566 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2567 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2569 /* Broadcast to HSM listeners */
2570 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
2576 * callback function passed to kuc for re-registering each HSM copytool
2577 * running on MDC, after MDT shutdown/recovery.
2578 * @param data copytool registration data
2579 * @param cb_arg callback argument (obd_import)
2581 static int mdc_hsm_ct_reregister(void *data, void *cb_arg)
2583 struct kkuc_ct_data *kcd = data;
2584 struct obd_import *imp = (struct obd_import *)cb_arg;
2587 if (kcd == NULL || kcd->kcd_magic != KKUC_CT_DATA_MAGIC)
2590 if (!obd_uuid_equals(&kcd->kcd_uuid, &imp->imp_obd->obd_uuid))
2593 CDEBUG(D_HA, "%s: recover copytool registration to MDT (archive=%#x)\n",
2594 imp->imp_obd->obd_name, kcd->kcd_archive);
2595 rc = mdc_ioc_hsm_ct_register(imp, kcd->kcd_archive);
2597 /* ignore error if the copytool is already registered */
2598 return (rc == -EEXIST) ? 0 : rc;
2602 * Re-establish all kuc contexts with MDT
2603 * after MDT shutdown/recovery.
2605 static int mdc_kuc_reregister(struct obd_import *imp)
2607 /* re-register HSM agents */
2608 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister,
2612 int mdc_set_info_async(const struct lu_env *env,
2613 struct obd_export *exp,
2614 obd_count keylen, void *key,
2615 obd_count vallen, void *val,
2616 struct ptlrpc_request_set *set)
2618 struct obd_import *imp = class_exp2cliimp(exp);
2622 if (KEY_IS(KEY_READ_ONLY)) {
2623 if (vallen != sizeof(int))
2626 spin_lock(&imp->imp_lock);
2627 if (*((int *)val)) {
2628 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2629 imp->imp_connect_data.ocd_connect_flags |=
2632 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2633 imp->imp_connect_data.ocd_connect_flags &=
2634 ~OBD_CONNECT_RDONLY;
2636 spin_unlock(&imp->imp_lock);
2638 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2639 keylen, key, vallen, val, set);
2642 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2643 sptlrpc_conf_client_adapt(exp->exp_obd);
2646 if (KEY_IS(KEY_FLUSH_CTX)) {
2647 sptlrpc_import_flush_my_ctx(imp);
2650 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2651 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2652 keylen, key, vallen, val, set);
2655 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2656 rc = mdc_hsm_copytool_send(vallen, val);
2660 CERROR("Unknown key %s\n", (char *)key);
2664 int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2665 __u32 keylen, void *key, __u32 *vallen, void *val,
2666 struct lov_stripe_md *lsm)
2670 if (KEY_IS(KEY_MAX_EASIZE)) {
2671 __u32 mdsize, *max_easize;
2673 if (*vallen != sizeof(int))
2675 mdsize = *(__u32 *)val;
2676 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2677 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2679 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2681 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2682 __u32 *default_easize;
2684 if (*vallen != sizeof(int))
2686 default_easize = val;
2687 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2689 } else if (KEY_IS(KEY_MAX_COOKIESIZE)) {
2690 __u32 mdsize, *max_cookiesize;
2692 if (*vallen != sizeof(int))
2694 mdsize = *(int *)val;
2695 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_cookiesize)
2696 exp->exp_obd->u.cli.cl_max_mds_cookiesize = mdsize;
2697 max_cookiesize = val;
2698 *max_cookiesize = exp->exp_obd->u.cli.cl_max_mds_cookiesize;
2700 } else if (KEY_IS(KEY_DEFAULT_COOKIESIZE)) {
2701 __u32 *default_cookiesize;
2703 if (*vallen != sizeof(int))
2705 default_cookiesize = val;
2706 *default_cookiesize =
2707 exp->exp_obd->u.cli.cl_default_mds_cookiesize;
2709 } else if (KEY_IS(KEY_CONN_DATA)) {
2710 struct obd_import *imp = class_exp2cliimp(exp);
2711 struct obd_connect_data *data = val;
2713 if (*vallen != sizeof(*data))
2716 *data = imp->imp_connect_data;
2718 } else if (KEY_IS(KEY_TGT_COUNT)) {
2719 *((__u32 *)val) = 1;
2723 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2728 int mdc_fsync(struct obd_export *exp, const struct lu_fid *fid,
2729 struct obd_capa *oc, struct ptlrpc_request **request)
2731 struct ptlrpc_request *req;
2736 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2740 mdc_set_capa_size(req, &RMF_CAPA1, oc);
2742 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2744 ptlrpc_request_free(req);
2748 mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
2750 ptlrpc_request_set_replen(req);
2752 rc = ptlrpc_queue_wait(req);
2754 ptlrpc_req_finished(req);
2760 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2761 enum obd_import_event event)
2765 LASSERT(imp->imp_obd == obd);
2768 case IMP_EVENT_DISCON: {
2770 /* XXX Pass event up to OBDs stack. used only for FLD now */
2771 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
2775 case IMP_EVENT_INACTIVE: {
2776 struct client_obd *cli = &obd->u.cli;
2778 * Flush current sequence to make client obtain new one
2779 * from server in case of disconnect/reconnect.
2781 if (cli->cl_seq != NULL)
2782 seq_client_flush(cli->cl_seq);
2784 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
2787 case IMP_EVENT_INVALIDATE: {
2788 struct ldlm_namespace *ns = obd->obd_namespace;
2790 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2794 case IMP_EVENT_ACTIVE:
2795 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
2796 /* redo the kuc registration after reconnecting */
2798 rc = mdc_kuc_reregister(imp);
2801 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
2803 case IMP_EVENT_DEACTIVATE:
2804 case IMP_EVENT_ACTIVATE:
2807 CERROR("Unknown import event %x\n", event);
2813 int mdc_fid_alloc(const struct lu_env *env, struct obd_export *exp,
2814 struct lu_fid *fid, struct md_op_data *op_data)
2816 struct client_obd *cli = &exp->exp_obd->u.cli;
2817 struct lu_client_seq *seq = cli->cl_seq;
2819 RETURN(seq_client_alloc_fid(env, seq, fid));
2822 struct obd_uuid *mdc_get_uuid(struct obd_export *exp) {
2823 struct client_obd *cli = &exp->exp_obd->u.cli;
2824 return &cli->cl_target_uuid;
2828 * Determine whether the lock can be canceled before replaying it during
2829 * recovery, non zero value will be return if the lock can be canceled,
2830 * or zero returned for not
2832 static int mdc_cancel_weight(struct ldlm_lock *lock)
2834 if (lock->l_resource->lr_type != LDLM_IBITS)
2837 /* FIXME: if we ever get into a situation where there are too many
2838 * opened files with open locks on a single node, then we really
2839 * should replay these open locks to reget it */
2840 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
2846 static int mdc_resource_inode_free(struct ldlm_resource *res)
2848 if (res->lr_lvb_inode)
2849 res->lr_lvb_inode = NULL;
2854 struct ldlm_valblock_ops inode_lvbo = {
2855 .lvbo_free = mdc_resource_inode_free
2858 static int mdc_llog_init(struct obd_device *obd)
2860 struct obd_llog_group *olg = &obd->obd_olg;
2861 struct llog_ctxt *ctxt;
2866 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, obd,
2871 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2872 llog_initiator_connect(ctxt);
2873 llog_ctxt_put(ctxt);
2878 static void mdc_llog_finish(struct obd_device *obd)
2880 struct llog_ctxt *ctxt;
2884 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2886 llog_cleanup(NULL, ctxt);
2891 static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2893 struct client_obd *cli = &obd->u.cli;
2897 OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2898 if (!cli->cl_rpc_lock)
2900 mdc_init_rpc_lock(cli->cl_rpc_lock);
2902 rc = ptlrpcd_addref();
2904 GOTO(err_rpc_lock, rc);
2906 OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2907 if (!cli->cl_close_lock)
2908 GOTO(err_ptlrpcd_decref, rc = -ENOMEM);
2909 mdc_init_rpc_lock(cli->cl_close_lock);
2911 rc = client_obd_setup(obd, cfg);
2913 GOTO(err_close_lock, rc);
2915 obd->obd_vars = lprocfs_mdc_obd_vars;
2916 lprocfs_obd_setup(obd);
2917 lprocfs_alloc_md_stats(obd, 0);
2919 sptlrpc_lprocfs_cliobd_attach(obd);
2920 ptlrpc_lprocfs_register_obd(obd);
2922 ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
2924 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2926 rc = mdc_llog_init(obd);
2929 CERROR("failed to setup llogging subsystems\n");
2935 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
2939 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
2943 /* Initialize the default and maximum LOV EA and cookie sizes. This allows
2944 * us to make MDS RPCs with large enough reply buffers to hold a default
2945 * sized EA and cookie without having to calculate this (via a call into the
2946 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
2947 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
2948 * a large number of stripes is possible. If a larger reply buffer is
2949 * required it will be reallocated in the ptlrpc layer due to overflow.
2951 static int mdc_init_ea_size(struct obd_export *exp, __u32 easize,
2952 __u32 def_easize, __u32 cookiesize,
2953 __u32 def_cookiesize)
2955 struct obd_device *obd = exp->exp_obd;
2956 struct client_obd *cli = &obd->u.cli;
2959 if (cli->cl_max_mds_easize < easize)
2960 cli->cl_max_mds_easize = easize;
2962 if (cli->cl_default_mds_easize < def_easize)
2963 cli->cl_default_mds_easize = def_easize;
2965 if (cli->cl_max_mds_cookiesize < cookiesize)
2966 cli->cl_max_mds_cookiesize = cookiesize;
2968 if (cli->cl_default_mds_cookiesize < def_cookiesize)
2969 cli->cl_default_mds_cookiesize = def_cookiesize;
2974 static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2980 case OBD_CLEANUP_EARLY:
2982 case OBD_CLEANUP_EXPORTS:
2983 /* Failsafe, ok if racy */
2984 if (obd->obd_type->typ_refcnt <= 1)
2985 libcfs_kkuc_group_rem(0, KUC_GRP_HSM, NULL);
2987 obd_cleanup_client_import(obd);
2988 ptlrpc_lprocfs_unregister_obd(obd);
2989 lprocfs_obd_cleanup(obd);
2990 lprocfs_free_md_stats(obd);
2991 mdc_llog_finish(obd);
2997 static int mdc_cleanup(struct obd_device *obd)
2999 struct client_obd *cli = &obd->u.cli;
3001 OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
3002 OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
3006 return client_obd_cleanup(obd);
3009 static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
3011 struct lustre_cfg *lcfg = buf;
3012 int rc = class_process_proc_param(PARAM_MDC, obd->obd_vars, lcfg, obd);
3013 return (rc > 0 ? 0: rc);
3017 /* get remote permission for current user on fid */
3018 int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
3019 struct obd_capa *oc, __u32 suppgid,
3020 struct ptlrpc_request **request)
3022 struct ptlrpc_request *req;
3026 LASSERT(client_is_remote(exp));
3029 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
3033 mdc_set_capa_size(req, &RMF_CAPA1, oc);
3035 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
3037 ptlrpc_request_free(req);
3041 mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
3043 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
3044 sizeof(struct mdt_remote_perm));
3046 ptlrpc_request_set_replen(req);
3048 rc = ptlrpc_queue_wait(req);
3050 ptlrpc_req_finished(req);
3056 static int mdc_interpret_renew_capa(const struct lu_env *env,
3057 struct ptlrpc_request *req, void *args,
3060 struct mdc_renew_capa_args *ra = args;
3061 struct mdt_body *body = NULL;
3062 struct lustre_capa *capa;
3066 GOTO(out, capa = ERR_PTR(status));
3068 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
3070 GOTO(out, capa = ERR_PTR(-EFAULT));
3072 if ((body->mbo_valid & OBD_MD_FLOSSCAPA) == 0)
3073 GOTO(out, capa = ERR_PTR(-ENOENT));
3075 capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
3077 GOTO(out, capa = ERR_PTR(-EFAULT));
3080 ra->ra_cb(ra->ra_oc, capa);
3084 static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
3087 struct ptlrpc_request *req;
3088 struct mdc_renew_capa_args *ra;
3091 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
3092 LUSTRE_MDS_VERSION, MDS_GETATTR);
3096 /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
3097 * capa to renew is oss capa.
3099 mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
3100 ptlrpc_request_set_replen(req);
3102 CLASSERT(sizeof(*ra) <= sizeof(req->rq_async_args));
3103 ra = ptlrpc_req_async_args(req);
3106 req->rq_interpret_reply = mdc_interpret_renew_capa;
3107 ptlrpcd_add_req(req, PDL_POLICY_LOCAL, -1);
3111 struct obd_ops mdc_obd_ops = {
3112 .o_owner = THIS_MODULE,
3113 .o_setup = mdc_setup,
3114 .o_precleanup = mdc_precleanup,
3115 .o_cleanup = mdc_cleanup,
3116 .o_add_conn = client_import_add_conn,
3117 .o_del_conn = client_import_del_conn,
3118 .o_connect = client_connect_import,
3119 .o_disconnect = client_disconnect_export,
3120 .o_iocontrol = mdc_iocontrol,
3121 .o_set_info_async = mdc_set_info_async,
3122 .o_statfs = mdc_statfs,
3123 .o_fid_init = client_fid_init,
3124 .o_fid_fini = client_fid_fini,
3125 .o_fid_alloc = mdc_fid_alloc,
3126 .o_import_event = mdc_import_event,
3127 .o_get_info = mdc_get_info,
3128 .o_process_config = mdc_process_config,
3129 .o_get_uuid = mdc_get_uuid,
3130 .o_quotactl = mdc_quotactl,
3131 .o_quotacheck = mdc_quotacheck
3134 struct md_ops mdc_md_ops = {
3135 .m_getstatus = mdc_getstatus,
3136 .m_null_inode = mdc_null_inode,
3137 .m_find_cbdata = mdc_find_cbdata,
3138 .m_close = mdc_close,
3139 .m_create = mdc_create,
3140 .m_done_writing = mdc_done_writing,
3141 .m_enqueue = mdc_enqueue,
3142 .m_getattr = mdc_getattr,
3143 .m_getattr_name = mdc_getattr_name,
3144 .m_intent_lock = mdc_intent_lock,
3146 .m_rename = mdc_rename,
3147 .m_setattr = mdc_setattr,
3148 .m_setxattr = mdc_setxattr,
3149 .m_getxattr = mdc_getxattr,
3150 .m_fsync = mdc_fsync,
3151 .m_read_page = mdc_read_page,
3152 .m_unlink = mdc_unlink,
3153 .m_cancel_unused = mdc_cancel_unused,
3154 .m_init_ea_size = mdc_init_ea_size,
3155 .m_set_lock_data = mdc_set_lock_data,
3156 .m_lock_match = mdc_lock_match,
3157 .m_get_lustre_md = mdc_get_lustre_md,
3158 .m_free_lustre_md = mdc_free_lustre_md,
3159 .m_set_open_replay_data = mdc_set_open_replay_data,
3160 .m_clear_open_replay_data = mdc_clear_open_replay_data,
3161 .m_renew_capa = mdc_renew_capa,
3162 .m_unpack_capa = mdc_unpack_capa,
3163 .m_get_remote_perm = mdc_get_remote_perm,
3164 .m_intent_getattr_async = mdc_intent_getattr_async,
3165 .m_revalidate_lock = mdc_revalidate_lock
3168 int __init mdc_init(void)
3170 return class_register_type(&mdc_obd_ops, &mdc_md_ops, true, NULL,
3171 LUSTRE_MDC_NAME, NULL);
3174 static void /*__exit*/ mdc_exit(void)
3176 class_unregister_type(LUSTRE_MDC_NAME);
3179 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3180 MODULE_DESCRIPTION("Lustre Metadata Client");
3181 MODULE_LICENSE("GPL");
3183 module_init(mdc_init);
3184 module_exit(mdc_exit);