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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #define DEBUG_SUBSYSTEM S_MDC
35 #include <linux/init.h>
36 #include <linux/kthread.h>
37 #include <linux/module.h>
38 #include <linux/pagemap.h>
39 #include <linux/user_namespace.h>
40 #include <linux/utsname.h>
41 #ifdef HAVE_UIDGID_HEADER
42 # include <linux/uidgid.h>
45 #include <lustre/lustre_errno.h>
47 #include <cl_object.h>
48 #include <llog_swab.h>
49 #include <lprocfs_status.h>
50 #include <lustre_acl.h>
51 #include <lustre_fid.h>
52 #include <uapi/linux/lustre_ioctl.h>
53 #include <lustre_kernelcomm.h>
54 #include <lustre_lmv.h>
55 #include <lustre_log.h>
56 #include <uapi/linux/lustre_param.h>
57 #include <lustre_swab.h>
58 #include <obd_class.h>
60 #include "mdc_internal.h"
62 #define REQUEST_MINOR 244
64 static int mdc_cleanup(struct obd_device *obd);
66 static inline int mdc_queue_wait(struct ptlrpc_request *req)
68 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
71 /* obd_get_request_slot() ensures that this client has no more
72 * than cl_max_rpcs_in_flight RPCs simultaneously inf light
74 rc = obd_get_request_slot(cli);
78 rc = ptlrpc_queue_wait(req);
79 obd_put_request_slot(cli);
85 * Send MDS_GET_ROOT RPC to fetch root FID.
87 * If \a fileset is not NULL it should contain a subdirectory off
88 * the ROOT/ directory to be mounted on the client. Return the FID
89 * of the subdirectory to the client to mount onto its mountpoint.
91 * \param[in] imp MDC import
92 * \param[in] fileset fileset name, which could be NULL
93 * \param[out] rootfid root FID of this mountpoint
94 * \param[out] pc root capa will be unpacked and saved in this pointer
96 * \retval 0 on success, negative errno on failure
98 static int mdc_get_root(struct obd_export *exp, const char *fileset,
99 struct lu_fid *rootfid)
101 struct ptlrpc_request *req;
102 struct mdt_body *body;
107 if (fileset && !(exp_connect_flags(exp) & OBD_CONNECT_SUBTREE))
110 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
116 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
117 strlen(fileset) + 1);
118 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_ROOT);
120 ptlrpc_request_free(req);
123 mdc_pack_body(req, NULL, 0, 0, -1, 0);
124 if (fileset != NULL) {
125 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
127 memcpy(name, fileset, strlen(fileset));
129 lustre_msg_add_flags(req->rq_reqmsg, LUSTRE_IMP_FULL);
130 req->rq_send_state = LUSTRE_IMP_FULL;
132 ptlrpc_request_set_replen(req);
134 rc = ptlrpc_queue_wait(req);
138 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
140 GOTO(out, rc = -EPROTO);
142 *rootfid = body->mbo_fid1;
143 CDEBUG(D_NET, "root fid="DFID", last_committed=%llu\n",
144 PFID(rootfid), lustre_msg_get_last_committed(req->rq_repmsg));
147 ptlrpc_req_finished(req);
153 * This function now is known to always saying that it will receive 4 buffers
154 * from server. Even for cases when acl_size and md_size is zero, RPC header
155 * will contain 4 fields and RPC itself will contain zero size fields. This is
156 * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
157 * and thus zero, it shrinks it, making zero size. The same story about
158 * md_size. And this is course of problem when client waits for smaller number
159 * of fields. This issue will be fixed later when client gets aware of RPC
162 static int mdc_getattr_common(struct obd_export *exp,
163 struct ptlrpc_request *req)
165 struct req_capsule *pill = &req->rq_pill;
166 struct mdt_body *body;
171 /* Request message already built. */
172 rc = ptlrpc_queue_wait(req);
176 /* sanity check for the reply */
177 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
181 CDEBUG(D_NET, "mode: %o\n", body->mbo_mode);
183 mdc_update_max_ea_from_body(exp, body);
184 if (body->mbo_eadatasize != 0) {
185 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
186 body->mbo_eadatasize);
194 static int mdc_getattr(struct obd_export *exp, struct md_op_data *op_data,
195 struct ptlrpc_request **request)
197 struct ptlrpc_request *req;
201 /* Single MDS without an LMV case */
202 if (op_data->op_flags & MF_GET_MDT_IDX) {
207 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
211 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
213 ptlrpc_request_free(req);
217 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
218 op_data->op_mode, -1, 0);
220 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
221 req->rq_import->imp_connect_data.ocd_max_easize);
222 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
224 ptlrpc_request_set_replen(req);
226 rc = mdc_getattr_common(exp, req);
228 ptlrpc_req_finished(req);
234 static int mdc_getattr_name(struct obd_export *exp, struct md_op_data *op_data,
235 struct ptlrpc_request **request)
237 struct ptlrpc_request *req;
242 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
243 &RQF_MDS_GETATTR_NAME);
247 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
248 op_data->op_namelen + 1);
250 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
252 ptlrpc_request_free(req);
256 mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
257 op_data->op_mode, op_data->op_suppgids[0], 0);
259 if (op_data->op_name) {
260 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
261 LASSERT(strnlen(op_data->op_name, op_data->op_namelen) ==
262 op_data->op_namelen);
263 memcpy(name, op_data->op_name, op_data->op_namelen);
266 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
268 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
269 req->rq_import->imp_connect_data.ocd_max_easize);
270 ptlrpc_request_set_replen(req);
272 rc = mdc_getattr_common(exp, req);
274 ptlrpc_req_finished(req);
280 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
281 const struct lu_fid *fid, int opcode, u64 valid,
282 const char *xattr_name, const char *input,
283 int input_size, int output_size, int flags,
284 __u32 suppgid, struct ptlrpc_request **request)
286 struct ptlrpc_request *req;
287 int xattr_namelen = 0;
293 req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
298 xattr_namelen = strlen(xattr_name) + 1;
299 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
304 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
308 /* Flush local XATTR locks to get rid of a possible cancel RPC */
309 if (opcode == MDS_REINT && fid_is_sane(fid) &&
310 exp->exp_connect_data.ocd_ibits_known & MDS_INODELOCK_XATTR) {
311 struct list_head cancels = LIST_HEAD_INIT(cancels);
314 /* Without that packing would fail */
316 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
319 count = mdc_resource_get_unused(exp, fid,
321 MDS_INODELOCK_XATTR);
323 rc = mdc_prep_elc_req(exp, req, MDS_REINT, &cancels, count);
325 ptlrpc_request_free(req);
329 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
331 ptlrpc_request_free(req);
336 if (opcode == MDS_REINT) {
337 struct mdt_rec_setxattr *rec;
339 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
340 sizeof(struct mdt_rec_reint));
341 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
342 rec->sx_opcode = REINT_SETXATTR;
343 rec->sx_fsuid = from_kuid(&init_user_ns, current_fsuid());
344 rec->sx_fsgid = from_kgid(&init_user_ns, current_fsgid());
345 rec->sx_cap = cfs_curproc_cap_pack();
346 rec->sx_suppgid1 = suppgid;
347 rec->sx_suppgid2 = -1;
349 rec->sx_valid = valid | OBD_MD_FLCTIME;
350 rec->sx_time = ktime_get_real_seconds();
351 rec->sx_size = output_size;
352 rec->sx_flags = flags;
354 mdc_pack_body(req, fid, valid, output_size, suppgid, flags);
358 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
359 memcpy(tmp, xattr_name, xattr_namelen);
362 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
363 memcpy(tmp, input, input_size);
366 if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
367 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
368 RCL_SERVER, output_size);
369 ptlrpc_request_set_replen(req);
372 if (opcode == MDS_REINT)
373 mdc_get_mod_rpc_slot(req, NULL);
375 rc = ptlrpc_queue_wait(req);
377 if (opcode == MDS_REINT)
378 mdc_put_mod_rpc_slot(req, NULL);
381 ptlrpc_req_finished(req);
387 static int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
388 u64 valid, const char *xattr_name,
389 const char *input, int input_size, int output_size,
390 int flags, __u32 suppgid,
391 struct ptlrpc_request **request)
393 return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
394 fid, MDS_REINT, valid, xattr_name,
395 input, input_size, output_size, flags,
399 static int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
400 u64 valid, const char *xattr_name,
401 const char *input, int input_size, int output_size,
402 int flags, struct ptlrpc_request **request)
404 return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
405 fid, MDS_GETXATTR, valid, xattr_name,
406 input, input_size, output_size, flags,
410 #ifdef CONFIG_FS_POSIX_ACL
411 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
413 struct req_capsule *pill = &req->rq_pill;
414 struct mdt_body *body = md->body;
415 struct posix_acl *acl;
420 if (!body->mbo_aclsize)
423 buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->mbo_aclsize);
428 acl = posix_acl_from_xattr(&init_user_ns, buf, body->mbo_aclsize);
433 CERROR("convert xattr to acl: %d\n", rc);
437 rc = posix_acl_valid(&init_user_ns, acl);
439 CERROR("validate acl: %d\n", rc);
440 posix_acl_release(acl);
448 #define mdc_unpack_acl(req, md) 0
451 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
452 struct obd_export *dt_exp, struct obd_export *md_exp,
453 struct lustre_md *md)
455 struct req_capsule *pill = &req->rq_pill;
460 memset(md, 0, sizeof(*md));
462 md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
463 LASSERT(md->body != NULL);
465 if (md->body->mbo_valid & OBD_MD_FLEASIZE) {
466 if (!S_ISREG(md->body->mbo_mode)) {
467 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
468 "regular file, but is not\n");
469 GOTO(out, rc = -EPROTO);
472 if (md->body->mbo_eadatasize == 0) {
473 CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
474 "but eadatasize 0\n");
475 GOTO(out, rc = -EPROTO);
478 md->layout.lb_len = md->body->mbo_eadatasize;
479 md->layout.lb_buf = req_capsule_server_sized_get(pill,
482 if (md->layout.lb_buf == NULL)
483 GOTO(out, rc = -EPROTO);
484 } else if (md->body->mbo_valid & OBD_MD_FLDIREA) {
485 const union lmv_mds_md *lmv;
488 if (!S_ISDIR(md->body->mbo_mode)) {
489 CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
490 "directory, but is not\n");
491 GOTO(out, rc = -EPROTO);
494 lmv_size = md->body->mbo_eadatasize;
496 CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
497 "but eadatasize 0\n");
501 if (md->body->mbo_valid & OBD_MD_MEA) {
502 lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
505 GOTO(out, rc = -EPROTO);
507 rc = md_unpackmd(md_exp, &md->lmv, lmv, lmv_size);
511 if (rc < (typeof(rc))sizeof(*md->lmv)) {
512 CDEBUG(D_INFO, "size too small: "
513 "rc < sizeof(*md->lmv) (%d < %d)\n",
514 rc, (int)sizeof(*md->lmv));
515 GOTO(out, rc = -EPROTO);
521 if (md->body->mbo_valid & OBD_MD_FLACL) {
522 /* for ACL, it's possible that FLACL is set but aclsize is zero.
523 * only when aclsize != 0 there's an actual segment for ACL
526 if (md->body->mbo_aclsize) {
527 rc = mdc_unpack_acl(req, md);
530 #ifdef CONFIG_FS_POSIX_ACL
532 md->posix_acl = NULL;
540 #ifdef CONFIG_FS_POSIX_ACL
541 posix_acl_release(md->posix_acl);
547 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
553 void mdc_replay_open(struct ptlrpc_request *req)
555 struct md_open_data *mod = req->rq_cb_data;
556 struct ptlrpc_request *close_req;
557 struct obd_client_handle *och;
558 struct lustre_handle old;
559 struct mdt_body *body;
563 DEBUG_REQ(D_ERROR, req,
564 "Can't properly replay without open data.");
569 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
570 LASSERT(body != NULL);
572 spin_lock(&req->rq_lock);
574 if (och && och->och_fh.cookie)
575 req->rq_early_free_repbuf = 1;
577 req->rq_early_free_repbuf = 0;
578 spin_unlock(&req->rq_lock);
580 if (req->rq_early_free_repbuf) {
581 struct lustre_handle *file_fh;
583 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
585 file_fh = &och->och_fh;
586 CDEBUG(D_HA, "updating handle from %#llx to %#llx\n",
587 file_fh->cookie, body->mbo_handle.cookie);
589 *file_fh = body->mbo_handle;
592 close_req = mod->mod_close_req;
594 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
595 struct mdt_ioepoch *epoch;
597 LASSERT(opc == MDS_CLOSE);
598 epoch = req_capsule_client_get(&close_req->rq_pill,
602 if (req->rq_early_free_repbuf)
603 LASSERT(!memcmp(&old, &epoch->mio_handle, sizeof(old)));
605 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
606 epoch->mio_handle = body->mbo_handle;
611 void mdc_commit_open(struct ptlrpc_request *req)
613 struct md_open_data *mod = req->rq_cb_data;
618 * No need to touch md_open_data::mod_och, it holds a reference on
619 * \var mod and will zero references to each other, \var mod will be
620 * freed after that when md_open_data::mod_och will put the reference.
624 * Do not let open request to disappear as it still may be needed
625 * for close rpc to happen (it may happen on evict only, otherwise
626 * ptlrpc_request::rq_replay does not let mdc_commit_open() to be
627 * called), just mark this rpc as committed to distinguish these 2
628 * cases, see mdc_close() for details. The open request reference will
629 * be put along with freeing \var mod.
631 ptlrpc_request_addref(req);
632 spin_lock(&req->rq_lock);
633 req->rq_committed = 1;
634 spin_unlock(&req->rq_lock);
635 req->rq_cb_data = NULL;
639 int mdc_set_open_replay_data(struct obd_export *exp,
640 struct obd_client_handle *och,
641 struct lookup_intent *it)
643 struct md_open_data *mod;
644 struct mdt_rec_create *rec;
645 struct mdt_body *body;
646 struct ptlrpc_request *open_req = it->it_request;
647 struct obd_import *imp = open_req->rq_import;
650 if (!open_req->rq_replay)
653 rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
654 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
655 LASSERT(rec != NULL);
656 /* Incoming message in my byte order (it's been swabbed). */
657 /* Outgoing messages always in my byte order. */
658 LASSERT(body != NULL);
660 /* Only if the import is replayable, we set replay_open data */
661 if (och && imp->imp_replayable) {
662 mod = obd_mod_alloc();
664 DEBUG_REQ(D_ERROR, open_req,
665 "Can't allocate md_open_data");
670 * Take a reference on \var mod, to be freed on mdc_close().
671 * It protects \var mod from being freed on eviction (commit
672 * callback is called despite rq_replay flag).
673 * Another reference for \var och.
678 spin_lock(&open_req->rq_lock);
681 mod->mod_is_create = it_disposition(it, DISP_OPEN_CREATE) ||
682 it_disposition(it, DISP_OPEN_STRIPE);
683 mod->mod_open_req = open_req;
684 open_req->rq_cb_data = mod;
685 open_req->rq_commit_cb = mdc_commit_open;
686 open_req->rq_early_free_repbuf = 1;
687 spin_unlock(&open_req->rq_lock);
690 rec->cr_fid2 = body->mbo_fid1;
691 rec->cr_ioepoch = body->mbo_ioepoch;
692 rec->cr_old_handle.cookie = body->mbo_handle.cookie;
693 open_req->rq_replay_cb = mdc_replay_open;
694 if (!fid_is_sane(&body->mbo_fid1)) {
695 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
700 DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
704 static void mdc_free_open(struct md_open_data *mod)
708 if (mod->mod_is_create == 0 &&
709 imp_connect_disp_stripe(mod->mod_open_req->rq_import))
713 * No reason to asssert here if the open request has
714 * rq_replay == 1. It means that mdc_close failed, and
715 * close request wasn`t sent. It is not fatal to client.
716 * The worst thing is eviction if the client gets open lock
719 DEBUG_REQ(D_RPCTRACE, mod->mod_open_req, "free open request rq_replay"
720 "= %d\n", mod->mod_open_req->rq_replay);
722 ptlrpc_request_committed(mod->mod_open_req, committed);
723 if (mod->mod_close_req)
724 ptlrpc_request_committed(mod->mod_close_req, committed);
727 int mdc_clear_open_replay_data(struct obd_export *exp,
728 struct obd_client_handle *och)
730 struct md_open_data *mod = och->och_mod;
734 * It is possible to not have \var mod in a case of eviction between
735 * lookup and ll_file_open().
740 LASSERT(mod != LP_POISON);
741 LASSERT(mod->mod_open_req != NULL);
743 spin_lock(&mod->mod_open_req->rq_lock);
745 mod->mod_och->och_fh.cookie = 0;
746 mod->mod_open_req->rq_early_free_repbuf = 0;
747 spin_unlock(&mod->mod_open_req->rq_lock);
757 static int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
758 struct md_open_data *mod, struct ptlrpc_request **request)
760 struct obd_device *obd = class_exp2obd(exp);
761 struct ptlrpc_request *req;
762 struct req_format *req_fmt;
767 if (op_data->op_bias & MDS_HSM_RELEASE) {
768 req_fmt = &RQF_MDS_INTENT_CLOSE;
770 /* allocate a FID for volatile file */
771 rc = mdc_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
773 CERROR("%s: "DFID" failed to allocate FID: %d\n",
774 obd->obd_name, PFID(&op_data->op_fid1), rc);
775 /* save the errcode and proceed to close */
778 } else if (op_data->op_bias & MDS_CLOSE_LAYOUT_SWAP) {
779 req_fmt = &RQF_MDS_INTENT_CLOSE;
781 req_fmt = &RQF_MDS_CLOSE;
785 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_CLOSE))
788 req = ptlrpc_request_alloc(class_exp2cliimp(exp), req_fmt);
790 /* Ensure that this close's handle is fixed up during replay. */
791 if (likely(mod != NULL)) {
792 LASSERTF(mod->mod_open_req != NULL &&
793 mod->mod_open_req->rq_type != LI_POISON,
794 "POISONED open %p!\n", mod->mod_open_req);
796 mod->mod_close_req = req;
798 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
799 /* We no longer want to preserve this open for replay even
800 * though the open was committed. b=3632, b=3633 */
801 spin_lock(&mod->mod_open_req->rq_lock);
802 mod->mod_open_req->rq_replay = 0;
803 spin_unlock(&mod->mod_open_req->rq_lock);
805 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
809 * TODO: repeat close after errors
811 CWARN("%s: close of FID "DFID" failed, file reference will be "
812 "dropped when this client unmounts or is evicted\n",
813 obd->obd_name, PFID(&op_data->op_fid1));
814 GOTO(out, rc = -ENOMEM);
817 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
819 ptlrpc_request_free(req);
824 /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
825 * portal whose threads are not taking any DLM locks and are therefore
826 * always progressing */
827 req->rq_request_portal = MDS_READPAGE_PORTAL;
828 ptlrpc_at_set_req_timeout(req);
831 mdc_close_pack(req, op_data);
833 req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
834 obd->u.cli.cl_default_mds_easize);
836 ptlrpc_request_set_replen(req);
838 mdc_get_mod_rpc_slot(req, NULL);
839 rc = ptlrpc_queue_wait(req);
840 mdc_put_mod_rpc_slot(req, NULL);
842 if (req->rq_repmsg == NULL) {
843 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
846 rc = req->rq_status ?: -EIO;
847 } else if (rc == 0 || rc == -EAGAIN) {
848 struct mdt_body *body;
850 rc = lustre_msg_get_status(req->rq_repmsg);
851 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
852 DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
857 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
860 } else if (rc == -ESTALE) {
862 * it can be allowed error after 3633 if open was committed and
863 * server failed before close was sent. Let's check if mod
864 * exists and return no error in that case
867 DEBUG_REQ(D_HA, req, "Reset ESTALE = %d", rc);
868 LASSERT(mod->mod_open_req != NULL);
869 if (mod->mod_open_req->rq_committed)
877 mod->mod_close_req = NULL;
878 /* Since now, mod is accessed through open_req only,
879 * thus close req does not keep a reference on mod anymore. */
884 RETURN(rc < 0 ? rc : saved_rc);
887 static int mdc_getpage(struct obd_export *exp, const struct lu_fid *fid,
888 u64 offset, struct page **pages, int npages,
889 struct ptlrpc_request **request)
891 struct ptlrpc_request *req;
892 struct ptlrpc_bulk_desc *desc;
894 wait_queue_head_t waitq;
896 struct l_wait_info lwi;
901 init_waitqueue_head(&waitq);
904 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
908 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
910 ptlrpc_request_free(req);
914 req->rq_request_portal = MDS_READPAGE_PORTAL;
915 ptlrpc_at_set_req_timeout(req);
917 desc = ptlrpc_prep_bulk_imp(req, npages, 1,
918 PTLRPC_BULK_PUT_SINK | PTLRPC_BULK_BUF_KIOV,
920 &ptlrpc_bulk_kiov_pin_ops);
922 ptlrpc_req_finished(req);
926 /* NB req now owns desc and will free it when it gets freed */
927 for (i = 0; i < npages; i++)
928 desc->bd_frag_ops->add_kiov_frag(desc, pages[i], 0,
931 mdc_readdir_pack(req, offset, PAGE_SIZE * npages, fid);
933 ptlrpc_request_set_replen(req);
934 rc = ptlrpc_queue_wait(req);
936 ptlrpc_req_finished(req);
937 if (rc != -ETIMEDOUT)
941 if (!client_should_resend(resends, &exp->exp_obd->u.cli)) {
942 CERROR("%s: too many resend retries: rc = %d\n",
943 exp->exp_obd->obd_name, -EIO);
946 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
948 l_wait_event(waitq, 0, &lwi);
953 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
954 req->rq_bulk->bd_nob_transferred);
956 ptlrpc_req_finished(req);
960 if (req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK) {
961 CERROR("%s: unexpected bytes transferred: %d (%ld expected)\n",
962 exp->exp_obd->obd_name, req->rq_bulk->bd_nob_transferred,
964 ptlrpc_req_finished(req);
972 static void mdc_release_page(struct page *page, int remove)
976 if (likely(page->mapping != NULL))
977 truncate_complete_page(page->mapping, page);
983 static struct page *mdc_page_locate(struct address_space *mapping, __u64 *hash,
984 __u64 *start, __u64 *end, int hash64)
987 * Complement of hash is used as an index so that
988 * radix_tree_gang_lookup() can be used to find a page with starting
989 * hash _smaller_ than one we are looking for.
991 unsigned long offset = hash_x_index(*hash, hash64);
995 spin_lock_irq(&mapping->tree_lock);
996 found = radix_tree_gang_lookup(&mapping->page_tree,
997 (void **)&page, offset, 1);
998 if (found > 0 && !radix_tree_exceptional_entry(page)) {
999 struct lu_dirpage *dp;
1002 spin_unlock_irq(&mapping->tree_lock);
1004 * In contrast to find_lock_page() we are sure that directory
1005 * page cannot be truncated (while DLM lock is held) and,
1006 * hence, can avoid restart.
1008 * In fact, page cannot be locked here at all, because
1009 * mdc_read_page_remote does synchronous io.
1011 wait_on_page_locked(page);
1012 if (PageUptodate(page)) {
1014 if (BITS_PER_LONG == 32 && hash64) {
1015 *start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1016 *end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1017 *hash = *hash >> 32;
1019 *start = le64_to_cpu(dp->ldp_hash_start);
1020 *end = le64_to_cpu(dp->ldp_hash_end);
1022 if (unlikely(*start == 1 && *hash == 0))
1025 LASSERTF(*start <= *hash, "start = %#llx"
1026 ",end = %#llx,hash = %#llx\n",
1027 *start, *end, *hash);
1028 CDEBUG(D_VFSTRACE, "offset %lx [%#llx %#llx],"
1029 " hash %#llx\n", offset, *start, *end, *hash);
1032 mdc_release_page(page, 0);
1034 } else if (*end != *start && *hash == *end) {
1036 * upon hash collision, remove this page,
1037 * otherwise put page reference, and
1038 * mdc_read_page_remote() will issue RPC to
1039 * fetch the page we want.
1042 mdc_release_page(page,
1043 le32_to_cpu(dp->ldp_flags) & LDF_COLLIDE);
1048 page = ERR_PTR(-EIO);
1051 spin_unlock_irq(&mapping->tree_lock);
1058 * Adjust a set of pages, each page containing an array of lu_dirpages,
1059 * so that each page can be used as a single logical lu_dirpage.
1061 * A lu_dirpage is laid out as follows, where s = ldp_hash_start,
1062 * e = ldp_hash_end, f = ldp_flags, p = padding, and each "ent" is a
1063 * struct lu_dirent. It has size up to LU_PAGE_SIZE. The ldp_hash_end
1064 * value is used as a cookie to request the next lu_dirpage in a
1065 * directory listing that spans multiple pages (two in this example):
1068 * .|--------v------- -----.
1069 * |s|e|f|p|ent|ent| ... |ent|
1070 * '--|-------------- -----' Each PAGE contains a single
1071 * '------. lu_dirpage.
1072 * .---------v------- -----.
1073 * |s|e|f|p|ent| 0 | ... | 0 |
1074 * '----------------- -----'
1076 * However, on hosts where the native VM page size (PAGE_SIZE) is
1077 * larger than LU_PAGE_SIZE, a single host page may contain multiple
1078 * lu_dirpages. After reading the lu_dirpages from the MDS, the
1079 * ldp_hash_end of the first lu_dirpage refers to the one immediately
1080 * after it in the same PAGE (arrows simplified for brevity, but
1081 * in general e0==s1, e1==s2, etc.):
1083 * .-------------------- -----.
1084 * |s0|e0|f0|p|ent|ent| ... |ent|
1085 * |---v---------------- -----|
1086 * |s1|e1|f1|p|ent|ent| ... |ent|
1087 * |---v---------------- -----| Here, each PAGE contains
1088 * ... multiple lu_dirpages.
1089 * |---v---------------- -----|
1090 * |s'|e'|f'|p|ent|ent| ... |ent|
1091 * '---|---------------- -----'
1093 * .----------------------------.
1096 * This structure is transformed into a single logical lu_dirpage as follows:
1098 * - Replace e0 with e' so the request for the next lu_dirpage gets the page
1099 * labeled 'next PAGE'.
1101 * - Copy the LDF_COLLIDE flag from f' to f0 to correctly reflect whether
1102 * a hash collision with the next page exists.
1104 * - Adjust the lde_reclen of the ending entry of each lu_dirpage to span
1105 * to the first entry of the next lu_dirpage.
1107 #if PAGE_SIZE > LU_PAGE_SIZE
1108 static void mdc_adjust_dirpages(struct page **pages, int cfs_pgs, int lu_pgs)
1112 for (i = 0; i < cfs_pgs; i++) {
1113 struct lu_dirpage *dp = kmap(pages[i]);
1114 struct lu_dirpage *first = dp;
1115 struct lu_dirent *end_dirent = NULL;
1116 struct lu_dirent *ent;
1117 __u64 hash_end = le64_to_cpu(dp->ldp_hash_end);
1118 __u32 flags = le32_to_cpu(dp->ldp_flags);
1120 while (--lu_pgs > 0) {
1121 ent = lu_dirent_start(dp);
1122 for (end_dirent = ent; ent != NULL;
1123 end_dirent = ent, ent = lu_dirent_next(ent));
1125 /* Advance dp to next lu_dirpage. */
1126 dp = (struct lu_dirpage *)((char *)dp + LU_PAGE_SIZE);
1128 /* Check if we've reached the end of the PAGE. */
1129 if (!((unsigned long)dp & ~PAGE_MASK))
1132 /* Save the hash and flags of this lu_dirpage. */
1133 hash_end = le64_to_cpu(dp->ldp_hash_end);
1134 flags = le32_to_cpu(dp->ldp_flags);
1136 /* Check if lu_dirpage contains no entries. */
1137 if (end_dirent == NULL)
1140 /* Enlarge the end entry lde_reclen from 0 to
1141 * first entry of next lu_dirpage. */
1142 LASSERT(le16_to_cpu(end_dirent->lde_reclen) == 0);
1143 end_dirent->lde_reclen =
1144 cpu_to_le16((char *)(dp->ldp_entries) -
1145 (char *)end_dirent);
1148 first->ldp_hash_end = hash_end;
1149 first->ldp_flags &= ~cpu_to_le32(LDF_COLLIDE);
1150 first->ldp_flags |= flags & cpu_to_le32(LDF_COLLIDE);
1154 LASSERTF(lu_pgs == 0, "left = %d\n", lu_pgs);
1157 #define mdc_adjust_dirpages(pages, cfs_pgs, lu_pgs) do {} while (0)
1158 #endif /* PAGE_SIZE > LU_PAGE_SIZE */
1160 /* parameters for readdir page */
1161 struct readpage_param {
1162 struct md_op_data *rp_mod;
1165 struct obd_export *rp_exp;
1166 struct md_callback *rp_cb;
1169 #ifndef HAVE_DELETE_FROM_PAGE_CACHE
1170 static inline void delete_from_page_cache(struct page *page)
1172 remove_from_page_cache(page);
1178 * Read pages from server.
1180 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
1181 * a header lu_dirpage which describes the start/end hash, and whether this
1182 * page is empty (contains no dir entry) or hash collide with next page.
1183 * After client receives reply, several pages will be integrated into dir page
1184 * in PAGE_SIZE (if PAGE_SIZE greater than LU_PAGE_SIZE), and the
1185 * lu_dirpage for this integrated page will be adjusted.
1187 static int mdc_read_page_remote(void *data, struct page *page0)
1189 struct readpage_param *rp = data;
1190 struct page **page_pool;
1192 struct lu_dirpage *dp;
1193 struct md_op_data *op_data = rp->rp_mod;
1194 struct ptlrpc_request *req;
1196 struct inode *inode;
1198 int rd_pgs = 0; /* number of pages actually read */
1204 max_pages = rp->rp_exp->exp_obd->u.cli.cl_max_pages_per_rpc;
1205 inode = op_data->op_data;
1206 fid = &op_data->op_fid1;
1207 LASSERT(inode != NULL);
1209 OBD_ALLOC(page_pool, sizeof(page_pool[0]) * max_pages);
1210 if (page_pool != NULL) {
1211 page_pool[0] = page0;
1217 for (npages = 1; npages < max_pages; npages++) {
1218 page = page_cache_alloc_cold(inode->i_mapping);
1221 page_pool[npages] = page;
1224 rc = mdc_getpage(rp->rp_exp, fid, rp->rp_off, page_pool, npages, &req);
1226 /* page0 is special, which was added into page cache early */
1227 delete_from_page_cache(page0);
1231 rd_pgs = (req->rq_bulk->bd_nob_transferred + PAGE_SIZE - 1) >>
1233 lu_pgs = req->rq_bulk->bd_nob_transferred >> LU_PAGE_SHIFT;
1234 LASSERT(!(req->rq_bulk->bd_nob_transferred & ~LU_PAGE_MASK));
1236 CDEBUG(D_INODE, "read %d(%d) pages\n", rd_pgs, lu_pgs);
1238 mdc_adjust_dirpages(page_pool, rd_pgs, lu_pgs);
1240 SetPageUptodate(page0);
1244 ptlrpc_req_finished(req);
1245 CDEBUG(D_CACHE, "read %d/%d pages\n", rd_pgs, npages);
1246 for (i = 1; i < npages; i++) {
1247 unsigned long offset;
1251 page = page_pool[i];
1253 if (rc < 0 || i >= rd_pgs) {
1258 SetPageUptodate(page);
1261 hash = le64_to_cpu(dp->ldp_hash_start);
1264 offset = hash_x_index(hash, rp->rp_hash64);
1266 prefetchw(&page->flags);
1267 ret = add_to_page_cache_lru(page, inode->i_mapping, offset,
1272 CDEBUG(D_VFSTRACE, "page %lu add to page cache failed:"
1273 " rc = %d\n", offset, ret);
1277 if (page_pool != &page0)
1278 OBD_FREE(page_pool, sizeof(page_pool[0]) * max_pages);
1284 * Read dir page from cache first, if it can not find it, read it from
1285 * server and add into the cache.
1287 * \param[in] exp MDC export
1288 * \param[in] op_data client MD stack parameters, transfering parameters
1289 * between different layers on client MD stack.
1290 * \param[in] cb_op callback required for ldlm lock enqueue during
1292 * \param[in] hash_offset the hash offset of the page to be read
1293 * \param[in] ppage the page to be read
1295 * retval = 0 get the page successfully
1296 * errno(<0) get the page failed
1298 static int mdc_read_page(struct obd_export *exp, struct md_op_data *op_data,
1299 struct md_callback *cb_op, __u64 hash_offset,
1300 struct page **ppage)
1302 struct lookup_intent it = { .it_op = IT_READDIR };
1304 struct inode *dir = op_data->op_data;
1305 struct address_space *mapping;
1306 struct lu_dirpage *dp;
1309 struct lustre_handle lockh;
1310 struct ptlrpc_request *enq_req = NULL;
1311 struct readpage_param rp_param;
1318 LASSERT(dir != NULL);
1319 mapping = dir->i_mapping;
1321 rc = mdc_intent_lock(exp, op_data, &it, &enq_req,
1322 cb_op->md_blocking_ast, 0);
1323 if (enq_req != NULL)
1324 ptlrpc_req_finished(enq_req);
1327 CERROR("%s: "DFID" lock enqueue fails: rc = %d\n",
1328 exp->exp_obd->obd_name, PFID(&op_data->op_fid1), rc);
1333 lockh.cookie = it.it_lock_handle;
1334 mdc_set_lock_data(exp, &lockh, dir, NULL);
1336 rp_param.rp_off = hash_offset;
1337 rp_param.rp_hash64 = op_data->op_cli_flags & CLI_HASH64;
1338 page = mdc_page_locate(mapping, &rp_param.rp_off, &start, &end,
1339 rp_param.rp_hash64);
1341 CERROR("%s: dir page locate: "DFID" at %llu: rc %ld\n",
1342 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1343 rp_param.rp_off, PTR_ERR(page));
1344 GOTO(out_unlock, rc = PTR_ERR(page));
1345 } else if (page != NULL) {
1347 * XXX nikita: not entirely correct handling of a corner case:
1348 * suppose hash chain of entries with hash value HASH crosses
1349 * border between pages P0 and P1. First both P0 and P1 are
1350 * cached, seekdir() is called for some entry from the P0 part
1351 * of the chain. Later P0 goes out of cache. telldir(HASH)
1352 * happens and finds P1, as it starts with matching hash
1353 * value. Remaining entries from P0 part of the chain are
1354 * skipped. (Is that really a bug?)
1356 * Possible solutions: 0. don't cache P1 is such case, handle
1357 * it as an "overflow" page. 1. invalidate all pages at
1358 * once. 2. use HASH|1 as an index for P1.
1360 GOTO(hash_collision, page);
1363 rp_param.rp_exp = exp;
1364 rp_param.rp_mod = op_data;
1365 page = read_cache_page(mapping,
1366 hash_x_index(rp_param.rp_off,
1367 rp_param.rp_hash64),
1368 mdc_read_page_remote, &rp_param);
1370 CDEBUG(D_INFO, "%s: read cache page: "DFID" at %llu: %ld\n",
1371 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1372 rp_param.rp_off, PTR_ERR(page));
1373 GOTO(out_unlock, rc = PTR_ERR(page));
1376 wait_on_page_locked(page);
1378 if (!PageUptodate(page)) {
1379 CERROR("%s: page not updated: "DFID" at %llu: rc %d\n",
1380 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1381 rp_param.rp_off, -5);
1384 if (!PageChecked(page))
1385 SetPageChecked(page);
1386 if (PageError(page)) {
1387 CERROR("%s: page error: "DFID" at %llu: rc %d\n",
1388 exp->exp_obd->obd_name, PFID(&op_data->op_fid1),
1389 rp_param.rp_off, -5);
1394 dp = page_address(page);
1395 if (BITS_PER_LONG == 32 && rp_param.rp_hash64) {
1396 start = le64_to_cpu(dp->ldp_hash_start) >> 32;
1397 end = le64_to_cpu(dp->ldp_hash_end) >> 32;
1398 rp_param.rp_off = hash_offset >> 32;
1400 start = le64_to_cpu(dp->ldp_hash_start);
1401 end = le64_to_cpu(dp->ldp_hash_end);
1402 rp_param.rp_off = hash_offset;
1405 LASSERT(start == rp_param.rp_off);
1406 CWARN("Page-wide hash collision: %#lx\n", (unsigned long)end);
1407 #if BITS_PER_LONG == 32
1408 CWARN("Real page-wide hash collision at [%llu %llu] with "
1409 "hash %llu\n", le64_to_cpu(dp->ldp_hash_start),
1410 le64_to_cpu(dp->ldp_hash_end), hash_offset);
1414 * Fetch whole overflow chain...
1422 ldlm_lock_decref(&lockh, it.it_lock_mode);
1426 mdc_release_page(page, 1);
1432 static int mdc_statfs(const struct lu_env *env,
1433 struct obd_export *exp, struct obd_statfs *osfs,
1434 __u64 max_age, __u32 flags)
1436 struct obd_device *obd = class_exp2obd(exp);
1437 struct ptlrpc_request *req;
1438 struct obd_statfs *msfs;
1439 struct obd_import *imp = NULL;
1444 * Since the request might also come from lprocfs, so we need
1445 * sync this with client_disconnect_export Bug15684
1447 down_read(&obd->u.cli.cl_sem);
1448 if (obd->u.cli.cl_import)
1449 imp = class_import_get(obd->u.cli.cl_import);
1450 up_read(&obd->u.cli.cl_sem);
1454 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1455 LUSTRE_MDS_VERSION, MDS_STATFS);
1457 GOTO(output, rc = -ENOMEM);
1459 ptlrpc_request_set_replen(req);
1461 if (flags & OBD_STATFS_NODELAY) {
1462 /* procfs requests not want stay in wait for avoid deadlock */
1463 req->rq_no_resend = 1;
1464 req->rq_no_delay = 1;
1467 rc = ptlrpc_queue_wait(req);
1469 /* check connection error first */
1470 if (imp->imp_connect_error)
1471 rc = imp->imp_connect_error;
1475 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1477 GOTO(out, rc = -EPROTO);
1482 ptlrpc_req_finished(req);
1484 class_import_put(imp);
1488 static int mdc_ioc_fid2path(struct obd_export *exp, struct getinfo_fid2path *gf)
1490 __u32 keylen, vallen;
1494 if (gf->gf_pathlen > PATH_MAX)
1495 RETURN(-ENAMETOOLONG);
1496 if (gf->gf_pathlen < 2)
1499 /* Key is KEY_FID2PATH + getinfo_fid2path description */
1500 keylen = cfs_size_round(sizeof(KEY_FID2PATH) + sizeof(*gf) +
1501 sizeof(struct lu_fid));
1502 OBD_ALLOC(key, keylen);
1505 memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
1506 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
1507 memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf),
1508 gf->gf_u.gf_root_fid, sizeof(struct lu_fid));
1509 CDEBUG(D_IOCTL, "path get "DFID" from %llu #%d\n",
1510 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno);
1512 if (!fid_is_sane(&gf->gf_fid))
1513 GOTO(out, rc = -EINVAL);
1515 /* Val is struct getinfo_fid2path result plus path */
1516 vallen = sizeof(*gf) + gf->gf_pathlen;
1518 rc = obd_get_info(NULL, exp, keylen, key, &vallen, gf);
1519 if (rc != 0 && rc != -EREMOTE)
1522 if (vallen <= sizeof(*gf))
1523 GOTO(out, rc = -EPROTO);
1524 if (vallen > sizeof(*gf) + gf->gf_pathlen)
1525 GOTO(out, rc = -EOVERFLOW);
1527 CDEBUG(D_IOCTL, "path got "DFID" from %llu #%d: %s\n",
1528 PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno,
1529 gf->gf_pathlen < 512 ? gf->gf_u.gf_path :
1530 /* only log the last 512 characters of the path */
1531 gf->gf_u.gf_path + gf->gf_pathlen - 512);
1534 OBD_FREE(key, keylen);
1538 static int mdc_ioc_hsm_progress(struct obd_export *exp,
1539 struct hsm_progress_kernel *hpk)
1541 struct obd_import *imp = class_exp2cliimp(exp);
1542 struct hsm_progress_kernel *req_hpk;
1543 struct ptlrpc_request *req;
1547 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_PROGRESS,
1548 LUSTRE_MDS_VERSION, MDS_HSM_PROGRESS);
1550 GOTO(out, rc = -ENOMEM);
1552 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1554 /* Copy hsm_progress struct */
1555 req_hpk = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_PROGRESS);
1556 if (req_hpk == NULL)
1557 GOTO(out, rc = -EPROTO);
1560 req_hpk->hpk_errval = lustre_errno_hton(hpk->hpk_errval);
1562 ptlrpc_request_set_replen(req);
1564 mdc_get_mod_rpc_slot(req, NULL);
1565 rc = ptlrpc_queue_wait(req);
1566 mdc_put_mod_rpc_slot(req, NULL);
1570 ptlrpc_req_finished(req);
1574 static int mdc_ioc_hsm_ct_register(struct obd_import *imp, __u32 archives)
1576 __u32 *archive_mask;
1577 struct ptlrpc_request *req;
1581 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_REGISTER,
1583 MDS_HSM_CT_REGISTER);
1585 GOTO(out, rc = -ENOMEM);
1587 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1589 /* Copy hsm_progress struct */
1590 archive_mask = req_capsule_client_get(&req->rq_pill,
1591 &RMF_MDS_HSM_ARCHIVE);
1592 if (archive_mask == NULL)
1593 GOTO(out, rc = -EPROTO);
1595 *archive_mask = archives;
1597 ptlrpc_request_set_replen(req);
1599 rc = mdc_queue_wait(req);
1602 ptlrpc_req_finished(req);
1606 static int mdc_ioc_hsm_current_action(struct obd_export *exp,
1607 struct md_op_data *op_data)
1609 struct hsm_current_action *hca = op_data->op_data;
1610 struct hsm_current_action *req_hca;
1611 struct ptlrpc_request *req;
1615 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1616 &RQF_MDS_HSM_ACTION);
1620 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_ACTION);
1622 ptlrpc_request_free(req);
1626 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1627 op_data->op_suppgids[0], 0);
1629 ptlrpc_request_set_replen(req);
1631 rc = mdc_queue_wait(req);
1635 req_hca = req_capsule_server_get(&req->rq_pill,
1636 &RMF_MDS_HSM_CURRENT_ACTION);
1637 if (req_hca == NULL)
1638 GOTO(out, rc = -EPROTO);
1644 ptlrpc_req_finished(req);
1648 static int mdc_ioc_hsm_ct_unregister(struct obd_import *imp)
1650 struct ptlrpc_request *req;
1654 req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_HSM_CT_UNREGISTER,
1656 MDS_HSM_CT_UNREGISTER);
1658 GOTO(out, rc = -ENOMEM);
1660 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1662 ptlrpc_request_set_replen(req);
1664 rc = mdc_queue_wait(req);
1667 ptlrpc_req_finished(req);
1671 static int mdc_ioc_hsm_state_get(struct obd_export *exp,
1672 struct md_op_data *op_data)
1674 struct hsm_user_state *hus = op_data->op_data;
1675 struct hsm_user_state *req_hus;
1676 struct ptlrpc_request *req;
1680 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1681 &RQF_MDS_HSM_STATE_GET);
1685 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_GET);
1687 ptlrpc_request_free(req);
1691 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1692 op_data->op_suppgids[0], 0);
1694 ptlrpc_request_set_replen(req);
1696 rc = mdc_queue_wait(req);
1700 req_hus = req_capsule_server_get(&req->rq_pill, &RMF_HSM_USER_STATE);
1701 if (req_hus == NULL)
1702 GOTO(out, rc = -EPROTO);
1708 ptlrpc_req_finished(req);
1712 static int mdc_ioc_hsm_state_set(struct obd_export *exp,
1713 struct md_op_data *op_data)
1715 struct hsm_state_set *hss = op_data->op_data;
1716 struct hsm_state_set *req_hss;
1717 struct ptlrpc_request *req;
1721 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1722 &RQF_MDS_HSM_STATE_SET);
1726 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_STATE_SET);
1728 ptlrpc_request_free(req);
1732 mdc_pack_body(req, &op_data->op_fid1, 0, 0,
1733 op_data->op_suppgids[0], 0);
1736 req_hss = req_capsule_client_get(&req->rq_pill, &RMF_HSM_STATE_SET);
1737 if (req_hss == NULL)
1738 GOTO(out, rc = -EPROTO);
1741 ptlrpc_request_set_replen(req);
1743 mdc_get_mod_rpc_slot(req, NULL);
1744 rc = ptlrpc_queue_wait(req);
1745 mdc_put_mod_rpc_slot(req, NULL);
1749 ptlrpc_req_finished(req);
1753 static int mdc_ioc_hsm_request(struct obd_export *exp,
1754 struct hsm_user_request *hur)
1756 struct obd_import *imp = class_exp2cliimp(exp);
1757 struct ptlrpc_request *req;
1758 struct hsm_request *req_hr;
1759 struct hsm_user_item *req_hui;
1764 req = ptlrpc_request_alloc(imp, &RQF_MDS_HSM_REQUEST);
1766 GOTO(out, rc = -ENOMEM);
1768 req_capsule_set_size(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM, RCL_CLIENT,
1769 hur->hur_request.hr_itemcount
1770 * sizeof(struct hsm_user_item));
1771 req_capsule_set_size(&req->rq_pill, &RMF_GENERIC_DATA, RCL_CLIENT,
1772 hur->hur_request.hr_data_len);
1774 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_HSM_REQUEST);
1776 ptlrpc_request_free(req);
1780 mdc_pack_body(req, NULL, 0, 0, -1, 0);
1782 /* Copy hsm_request struct */
1783 req_hr = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_REQUEST);
1785 GOTO(out, rc = -EPROTO);
1786 *req_hr = hur->hur_request;
1788 /* Copy hsm_user_item structs */
1789 req_hui = req_capsule_client_get(&req->rq_pill, &RMF_MDS_HSM_USER_ITEM);
1790 if (req_hui == NULL)
1791 GOTO(out, rc = -EPROTO);
1792 memcpy(req_hui, hur->hur_user_item,
1793 hur->hur_request.hr_itemcount * sizeof(struct hsm_user_item));
1795 /* Copy opaque field */
1796 req_opaque = req_capsule_client_get(&req->rq_pill, &RMF_GENERIC_DATA);
1797 if (req_opaque == NULL)
1798 GOTO(out, rc = -EPROTO);
1799 memcpy(req_opaque, hur_data(hur), hur->hur_request.hr_data_len);
1801 ptlrpc_request_set_replen(req);
1803 mdc_get_mod_rpc_slot(req, NULL);
1804 rc = ptlrpc_queue_wait(req);
1805 mdc_put_mod_rpc_slot(req, NULL);
1810 ptlrpc_req_finished(req);
1814 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
1815 struct lustre_kernelcomm *lk);
1817 static int mdc_quotactl(struct obd_device *unused, struct obd_export *exp,
1818 struct obd_quotactl *oqctl)
1820 struct ptlrpc_request *req;
1821 struct obd_quotactl *oqc;
1825 req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
1826 &RQF_MDS_QUOTACTL, LUSTRE_MDS_VERSION,
1831 oqc = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1834 ptlrpc_request_set_replen(req);
1835 ptlrpc_at_set_req_timeout(req);
1836 req->rq_no_resend = 1;
1838 rc = ptlrpc_queue_wait(req);
1840 CERROR("ptlrpc_queue_wait failed, rc: %d\n", rc);
1842 if (req->rq_repmsg &&
1843 (oqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL))) {
1846 CERROR ("Can't unpack obd_quotactl\n");
1849 ptlrpc_req_finished(req);
1854 static int mdc_ioc_swap_layouts(struct obd_export *exp,
1855 struct md_op_data *op_data)
1857 struct list_head cancels = LIST_HEAD_INIT(cancels);
1858 struct ptlrpc_request *req;
1860 struct mdc_swap_layouts *msl, *payload;
1863 msl = op_data->op_data;
1865 /* When the MDT will get the MDS_SWAP_LAYOUTS RPC the
1866 * first thing it will do is to cancel the 2 layout
1867 * locks held by this client.
1868 * So the client must cancel its layout locks on the 2 fids
1869 * with the request RPC to avoid extra RPC round trips.
1871 count = mdc_resource_get_unused(exp, &op_data->op_fid1, &cancels,
1872 LCK_EX, MDS_INODELOCK_LAYOUT |
1873 MDS_INODELOCK_XATTR);
1874 count += mdc_resource_get_unused(exp, &op_data->op_fid2, &cancels,
1875 LCK_EX, MDS_INODELOCK_LAYOUT |
1876 MDS_INODELOCK_XATTR);
1878 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
1879 &RQF_MDS_SWAP_LAYOUTS);
1881 ldlm_lock_list_put(&cancels, l_bl_ast, count);
1885 rc = mdc_prep_elc_req(exp, req, MDS_SWAP_LAYOUTS, &cancels, count);
1887 ptlrpc_request_free(req);
1891 mdc_swap_layouts_pack(req, op_data);
1893 payload = req_capsule_client_get(&req->rq_pill, &RMF_SWAP_LAYOUTS);
1898 ptlrpc_request_set_replen(req);
1900 rc = ptlrpc_queue_wait(req);
1906 ptlrpc_req_finished(req);
1910 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1911 void *karg, void __user *uarg)
1913 struct obd_device *obd = exp->exp_obd;
1914 struct obd_ioctl_data *data = karg;
1915 struct obd_import *imp = obd->u.cli.cl_import;
1919 if (!try_module_get(THIS_MODULE)) {
1920 CERROR("%s: cannot get module '%s'\n", obd->obd_name,
1921 module_name(THIS_MODULE));
1925 case OBD_IOC_FID2PATH:
1926 rc = mdc_ioc_fid2path(exp, karg);
1928 case LL_IOC_HSM_CT_START:
1929 rc = mdc_ioc_hsm_ct_start(exp, karg);
1930 /* ignore if it was already registered on this MDS. */
1934 case LL_IOC_HSM_PROGRESS:
1935 rc = mdc_ioc_hsm_progress(exp, karg);
1937 case LL_IOC_HSM_STATE_GET:
1938 rc = mdc_ioc_hsm_state_get(exp, karg);
1940 case LL_IOC_HSM_STATE_SET:
1941 rc = mdc_ioc_hsm_state_set(exp, karg);
1943 case LL_IOC_HSM_ACTION:
1944 rc = mdc_ioc_hsm_current_action(exp, karg);
1946 case LL_IOC_HSM_REQUEST:
1947 rc = mdc_ioc_hsm_request(exp, karg);
1949 case OBD_IOC_CLIENT_RECOVER:
1950 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1, 0);
1954 case IOC_OSC_SET_ACTIVE:
1955 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
1957 case OBD_IOC_PING_TARGET:
1958 rc = ptlrpc_obd_ping(obd);
1961 * Normally IOC_OBD_STATFS, OBD_IOC_QUOTACTL iocontrol are handled by
1962 * LMV instead of MDC. But when the cluster is upgraded from 1.8,
1963 * there'd be no LMV layer thus we might be called here. Eventually
1964 * this code should be removed.
1967 case IOC_OBD_STATFS: {
1968 struct obd_statfs stat_buf = {0};
1970 if (*((__u32 *) data->ioc_inlbuf2) != 0)
1971 GOTO(out, rc = -ENODEV);
1974 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(obd),
1975 min((int)data->ioc_plen2,
1976 (int)sizeof(struct obd_uuid))))
1977 GOTO(out, rc = -EFAULT);
1979 rc = mdc_statfs(NULL, obd->obd_self_export, &stat_buf,
1980 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1985 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
1986 min((int) data->ioc_plen1,
1987 (int) sizeof(stat_buf))))
1988 GOTO(out, rc = -EFAULT);
1992 case OBD_IOC_QUOTACTL: {
1993 struct if_quotactl *qctl = karg;
1994 struct obd_quotactl *oqctl;
1996 OBD_ALLOC_PTR(oqctl);
1998 GOTO(out, rc = -ENOMEM);
2000 QCTL_COPY(oqctl, qctl);
2001 rc = obd_quotactl(exp, oqctl);
2003 QCTL_COPY(qctl, oqctl);
2004 qctl->qc_valid = QC_MDTIDX;
2005 qctl->obd_uuid = obd->u.cli.cl_target_uuid;
2008 OBD_FREE_PTR(oqctl);
2011 case LL_IOC_GET_CONNECT_FLAGS:
2012 if (copy_to_user(uarg, exp_connect_flags_ptr(exp),
2013 sizeof(*exp_connect_flags_ptr(exp))))
2014 GOTO(out, rc = -EFAULT);
2017 case LL_IOC_LOV_SWAP_LAYOUTS:
2018 rc = mdc_ioc_swap_layouts(exp, karg);
2021 CERROR("unrecognised ioctl: cmd = %#x\n", cmd);
2022 GOTO(out, rc = -ENOTTY);
2025 module_put(THIS_MODULE);
2030 static int mdc_get_info_rpc(struct obd_export *exp,
2031 u32 keylen, void *key,
2032 u32 vallen, void *val)
2034 struct obd_import *imp = class_exp2cliimp(exp);
2035 struct ptlrpc_request *req;
2040 req = ptlrpc_request_alloc(imp, &RQF_MDS_GET_INFO);
2044 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_KEY,
2045 RCL_CLIENT, keylen);
2046 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VALLEN,
2047 RCL_CLIENT, sizeof(vallen));
2049 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GET_INFO);
2051 ptlrpc_request_free(req);
2055 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_KEY);
2056 memcpy(tmp, key, keylen);
2057 tmp = req_capsule_client_get(&req->rq_pill, &RMF_GETINFO_VALLEN);
2058 memcpy(tmp, &vallen, sizeof(vallen));
2060 req_capsule_set_size(&req->rq_pill, &RMF_GETINFO_VAL,
2061 RCL_SERVER, vallen);
2062 ptlrpc_request_set_replen(req);
2064 rc = ptlrpc_queue_wait(req);
2065 /* -EREMOTE means the get_info result is partial, and it needs to
2066 * continue on another MDT, see fid2path part in lmv_iocontrol */
2067 if (rc == 0 || rc == -EREMOTE) {
2068 tmp = req_capsule_server_get(&req->rq_pill, &RMF_GETINFO_VAL);
2069 memcpy(val, tmp, vallen);
2070 if (ptlrpc_rep_need_swab(req)) {
2071 if (KEY_IS(KEY_FID2PATH))
2072 lustre_swab_fid2path(val);
2075 ptlrpc_req_finished(req);
2080 static void lustre_swab_hai(struct hsm_action_item *h)
2082 __swab32s(&h->hai_len);
2083 __swab32s(&h->hai_action);
2084 lustre_swab_lu_fid(&h->hai_fid);
2085 lustre_swab_lu_fid(&h->hai_dfid);
2086 __swab64s(&h->hai_cookie);
2087 __swab64s(&h->hai_extent.offset);
2088 __swab64s(&h->hai_extent.length);
2089 __swab64s(&h->hai_gid);
2092 static void lustre_swab_hal(struct hsm_action_list *h)
2094 struct hsm_action_item *hai;
2097 __swab32s(&h->hal_version);
2098 __swab32s(&h->hal_count);
2099 __swab32s(&h->hal_archive_id);
2100 __swab64s(&h->hal_flags);
2102 for (i = 0; i < h->hal_count; i++, hai = hai_next(hai))
2103 lustre_swab_hai(hai);
2106 static void lustre_swab_kuch(struct kuc_hdr *l)
2108 __swab16s(&l->kuc_magic);
2109 /* __u8 l->kuc_transport */
2110 __swab16s(&l->kuc_msgtype);
2111 __swab16s(&l->kuc_msglen);
2114 static int mdc_ioc_hsm_ct_start(struct obd_export *exp,
2115 struct lustre_kernelcomm *lk)
2117 struct obd_import *imp = class_exp2cliimp(exp);
2118 __u32 archive = lk->lk_data;
2121 if (lk->lk_group != KUC_GRP_HSM) {
2122 CERROR("Bad copytool group %d\n", lk->lk_group);
2126 CDEBUG(D_HSM, "CT start r%d w%d u%d g%d f%#x\n", lk->lk_rfd, lk->lk_wfd,
2127 lk->lk_uid, lk->lk_group, lk->lk_flags);
2129 if (lk->lk_flags & LK_FLG_STOP) {
2130 /* Unregister with the coordinator */
2131 rc = mdc_ioc_hsm_ct_unregister(imp);
2133 rc = mdc_ioc_hsm_ct_register(imp, archive);
2140 * Send a message to any listening copytools
2141 * @param val KUC message (kuc_hdr + hsm_action_list)
2142 * @param len total length of message
2144 static int mdc_hsm_copytool_send(size_t len, void *val)
2146 struct kuc_hdr *lh = (struct kuc_hdr *)val;
2147 struct hsm_action_list *hal = (struct hsm_action_list *)(lh + 1);
2151 if (len < sizeof(*lh) + sizeof(*hal)) {
2152 CERROR("Short HSM message %zu < %zu\n", len,
2153 sizeof(*lh) + sizeof(*hal));
2156 if (lh->kuc_magic == __swab16(KUC_MAGIC)) {
2157 lustre_swab_kuch(lh);
2158 lustre_swab_hal(hal);
2159 } else if (lh->kuc_magic != KUC_MAGIC) {
2160 CERROR("Bad magic %x!=%x\n", lh->kuc_magic, KUC_MAGIC);
2164 CDEBUG(D_HSM, " Received message mg=%x t=%d m=%d l=%d actions=%d "
2166 lh->kuc_magic, lh->kuc_transport, lh->kuc_msgtype,
2167 lh->kuc_msglen, hal->hal_count, hal->hal_fsname);
2169 /* Broadcast to HSM listeners */
2170 rc = libcfs_kkuc_group_put(KUC_GRP_HSM, lh);
2176 * callback function passed to kuc for re-registering each HSM copytool
2177 * running on MDC, after MDT shutdown/recovery.
2178 * @param data copytool registration data
2179 * @param cb_arg callback argument (obd_import)
2181 static int mdc_hsm_ct_reregister(void *data, void *cb_arg)
2183 struct kkuc_ct_data *kcd = data;
2184 struct obd_import *imp = (struct obd_import *)cb_arg;
2187 if (kcd == NULL || kcd->kcd_magic != KKUC_CT_DATA_MAGIC)
2190 if (!obd_uuid_equals(&kcd->kcd_uuid, &imp->imp_obd->obd_uuid))
2193 CDEBUG(D_HA, "%s: recover copytool registration to MDT (archive=%#x)\n",
2194 imp->imp_obd->obd_name, kcd->kcd_archive);
2195 rc = mdc_ioc_hsm_ct_register(imp, kcd->kcd_archive);
2197 /* ignore error if the copytool is already registered */
2198 return (rc == -EEXIST) ? 0 : rc;
2202 * Re-establish all kuc contexts with MDT
2203 * after MDT shutdown/recovery.
2205 static int mdc_kuc_reregister(struct obd_import *imp)
2207 /* re-register HSM agents */
2208 return libcfs_kkuc_group_foreach(KUC_GRP_HSM, mdc_hsm_ct_reregister,
2212 static int mdc_set_info_async(const struct lu_env *env,
2213 struct obd_export *exp,
2214 u32 keylen, void *key,
2215 u32 vallen, void *val,
2216 struct ptlrpc_request_set *set)
2218 struct obd_import *imp = class_exp2cliimp(exp);
2222 if (KEY_IS(KEY_READ_ONLY)) {
2223 if (vallen != sizeof(int))
2226 spin_lock(&imp->imp_lock);
2227 if (*((int *)val)) {
2228 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
2229 imp->imp_connect_data.ocd_connect_flags |=
2232 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
2233 imp->imp_connect_data.ocd_connect_flags &=
2234 ~OBD_CONNECT_RDONLY;
2236 spin_unlock(&imp->imp_lock);
2238 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2239 keylen, key, vallen, val, set);
2242 if (KEY_IS(KEY_SPTLRPC_CONF)) {
2243 sptlrpc_conf_client_adapt(exp->exp_obd);
2246 if (KEY_IS(KEY_FLUSH_CTX)) {
2247 sptlrpc_import_flush_my_ctx(imp);
2250 if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
2251 rc = do_set_info_async(imp, MDS_SET_INFO, LUSTRE_MDS_VERSION,
2252 keylen, key, vallen, val, set);
2255 if (KEY_IS(KEY_HSM_COPYTOOL_SEND)) {
2256 rc = mdc_hsm_copytool_send(vallen, val);
2260 if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2261 __u32 *default_easize = val;
2263 exp->exp_obd->u.cli.cl_default_mds_easize = *default_easize;
2267 CERROR("Unknown key %s\n", (char *)key);
2271 static int mdc_get_info(const struct lu_env *env, struct obd_export *exp,
2272 __u32 keylen, void *key, __u32 *vallen, void *val)
2276 if (KEY_IS(KEY_MAX_EASIZE)) {
2277 __u32 mdsize, *max_easize;
2279 if (*vallen != sizeof(int))
2281 mdsize = *(__u32 *)val;
2282 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
2283 exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
2285 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
2287 } else if (KEY_IS(KEY_DEFAULT_EASIZE)) {
2288 __u32 *default_easize;
2290 if (*vallen != sizeof(int))
2292 default_easize = val;
2293 *default_easize = exp->exp_obd->u.cli.cl_default_mds_easize;
2295 } else if (KEY_IS(KEY_CONN_DATA)) {
2296 struct obd_import *imp = class_exp2cliimp(exp);
2297 struct obd_connect_data *data = val;
2299 if (*vallen != sizeof(*data))
2302 *data = imp->imp_connect_data;
2304 } else if (KEY_IS(KEY_TGT_COUNT)) {
2305 *((__u32 *)val) = 1;
2309 rc = mdc_get_info_rpc(exp, keylen, key, *vallen, val);
2314 static int mdc_fsync(struct obd_export *exp, const struct lu_fid *fid,
2315 struct ptlrpc_request **request)
2317 struct ptlrpc_request *req;
2322 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
2326 rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
2328 ptlrpc_request_free(req);
2332 mdc_pack_body(req, fid, 0, 0, -1, 0);
2334 ptlrpc_request_set_replen(req);
2336 rc = ptlrpc_queue_wait(req);
2338 ptlrpc_req_finished(req);
2344 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
2345 enum obd_import_event event)
2349 LASSERT(imp->imp_obd == obd);
2353 case IMP_EVENT_INACTIVE: {
2354 struct client_obd *cli = &obd->u.cli;
2356 * Flush current sequence to make client obtain new one
2357 * from server in case of disconnect/reconnect.
2359 down_read(&cli->cl_seq_rwsem);
2361 seq_client_flush(cli->cl_seq);
2362 up_read(&cli->cl_seq_rwsem);
2364 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE);
2367 case IMP_EVENT_INVALIDATE: {
2368 struct ldlm_namespace *ns = obd->obd_namespace;
2370 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
2374 case IMP_EVENT_ACTIVE:
2375 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE);
2376 /* redo the kuc registration after reconnecting */
2378 rc = mdc_kuc_reregister(imp);
2381 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD);
2383 case IMP_EVENT_DISCON:
2384 case IMP_EVENT_DEACTIVATE:
2385 case IMP_EVENT_ACTIVATE:
2388 CERROR("Unknown import event %x\n", event);
2394 int mdc_fid_alloc(const struct lu_env *env, struct obd_export *exp,
2395 struct lu_fid *fid, struct md_op_data *op_data)
2397 struct client_obd *cli = &exp->exp_obd->u.cli;
2402 down_read(&cli->cl_seq_rwsem);
2404 rc = seq_client_alloc_fid(env, cli->cl_seq, fid);
2405 up_read(&cli->cl_seq_rwsem);
2410 static struct obd_uuid *mdc_get_uuid(struct obd_export *exp)
2412 struct client_obd *cli = &exp->exp_obd->u.cli;
2413 return &cli->cl_target_uuid;
2417 * Determine whether the lock can be canceled before replaying it during
2418 * recovery, non zero value will be return if the lock can be canceled,
2419 * or zero returned for not
2421 static int mdc_cancel_weight(struct ldlm_lock *lock)
2423 if (lock->l_resource->lr_type != LDLM_IBITS)
2426 /* FIXME: if we ever get into a situation where there are too many
2427 * opened files with open locks on a single node, then we really
2428 * should replay these open locks to reget it */
2429 if (lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_OPEN)
2435 static int mdc_resource_inode_free(struct ldlm_resource *res)
2437 if (res->lr_lvb_inode)
2438 res->lr_lvb_inode = NULL;
2443 static struct ldlm_valblock_ops inode_lvbo = {
2444 .lvbo_free = mdc_resource_inode_free
2447 static int mdc_llog_init(struct obd_device *obd)
2449 struct obd_llog_group *olg = &obd->obd_olg;
2450 struct llog_ctxt *ctxt;
2455 rc = llog_setup(NULL, obd, olg, LLOG_CHANGELOG_REPL_CTXT, obd,
2460 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
2461 llog_initiator_connect(ctxt);
2462 llog_ctxt_put(ctxt);
2467 static void mdc_llog_finish(struct obd_device *obd)
2469 struct llog_ctxt *ctxt;
2473 ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
2475 llog_cleanup(NULL, ctxt);
2480 static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
2485 rc = ptlrpcd_addref();
2489 rc = client_obd_setup(obd, cfg);
2491 GOTO(err_ptlrpcd_decref, rc);
2492 #ifdef CONFIG_PROC_FS
2493 obd->obd_vars = lprocfs_mdc_obd_vars;
2494 lprocfs_obd_setup(obd, false);
2495 lprocfs_alloc_md_stats(obd, 0);
2497 sptlrpc_lprocfs_cliobd_attach(obd);
2498 ptlrpc_lprocfs_register_obd(obd);
2500 ns_register_cancel(obd->obd_namespace, mdc_cancel_weight);
2502 obd->obd_namespace->ns_lvbo = &inode_lvbo;
2504 rc = mdc_llog_init(obd);
2506 CERROR("%s: failed to setup llogging subsystems: rc = %d\n",
2508 GOTO(err_mdc_cleanup, rc);
2511 rc = mdc_changelog_cdev_init(obd);
2513 CERROR("%s: failed to setup changelog char device: rc = %d\n",
2515 GOTO(err_mdc_cleanup, rc);
2521 client_obd_cleanup(obd);
2530 /* Initialize the default and maximum LOV EA sizes. This allows
2531 * us to make MDS RPCs with large enough reply buffers to hold a default
2532 * sized EA without having to calculate this (via a call into the
2533 * LOV + OSCs) each time we make an RPC. The maximum size is also tracked
2534 * but not used to avoid wastefully vmalloc()'ing large reply buffers when
2535 * a large number of stripes is possible. If a larger reply buffer is
2536 * required it will be reallocated in the ptlrpc layer due to overflow.
2538 static int mdc_init_ea_size(struct obd_export *exp, __u32 easize,
2541 struct obd_device *obd = exp->exp_obd;
2542 struct client_obd *cli = &obd->u.cli;
2545 if (cli->cl_max_mds_easize < easize)
2546 cli->cl_max_mds_easize = easize;
2548 if (cli->cl_default_mds_easize < def_easize)
2549 cli->cl_default_mds_easize = def_easize;
2554 static int mdc_precleanup(struct obd_device *obd)
2558 /* Failsafe, ok if racy */
2559 if (obd->obd_type->typ_refcnt <= 1)
2560 libcfs_kkuc_group_rem(0, KUC_GRP_HSM);
2562 mdc_changelog_cdev_finish(obd);
2564 obd_cleanup_client_import(obd);
2565 ptlrpc_lprocfs_unregister_obd(obd);
2566 lprocfs_obd_cleanup(obd);
2567 lprocfs_free_md_stats(obd);
2568 mdc_llog_finish(obd);
2572 static int mdc_cleanup(struct obd_device *obd)
2576 return client_obd_cleanup(obd);
2579 static int mdc_process_config(struct obd_device *obd, size_t len, void *buf)
2581 struct lustre_cfg *lcfg = buf;
2582 int rc = class_process_proc_param(PARAM_MDC, obd->obd_vars, lcfg, obd);
2583 return (rc > 0 ? 0: rc);
2586 static struct obd_ops mdc_obd_ops = {
2587 .o_owner = THIS_MODULE,
2588 .o_setup = mdc_setup,
2589 .o_precleanup = mdc_precleanup,
2590 .o_cleanup = mdc_cleanup,
2591 .o_add_conn = client_import_add_conn,
2592 .o_del_conn = client_import_del_conn,
2593 .o_connect = client_connect_import,
2594 .o_disconnect = client_disconnect_export,
2595 .o_iocontrol = mdc_iocontrol,
2596 .o_set_info_async = mdc_set_info_async,
2597 .o_statfs = mdc_statfs,
2598 .o_fid_init = client_fid_init,
2599 .o_fid_fini = client_fid_fini,
2600 .o_fid_alloc = mdc_fid_alloc,
2601 .o_import_event = mdc_import_event,
2602 .o_get_info = mdc_get_info,
2603 .o_process_config = mdc_process_config,
2604 .o_get_uuid = mdc_get_uuid,
2605 .o_quotactl = mdc_quotactl,
2608 static struct md_ops mdc_md_ops = {
2609 .m_get_root = mdc_get_root,
2610 .m_null_inode = mdc_null_inode,
2611 .m_close = mdc_close,
2612 .m_create = mdc_create,
2613 .m_enqueue = mdc_enqueue,
2614 .m_getattr = mdc_getattr,
2615 .m_getattr_name = mdc_getattr_name,
2616 .m_intent_lock = mdc_intent_lock,
2618 .m_rename = mdc_rename,
2619 .m_setattr = mdc_setattr,
2620 .m_setxattr = mdc_setxattr,
2621 .m_getxattr = mdc_getxattr,
2622 .m_fsync = mdc_fsync,
2623 .m_read_page = mdc_read_page,
2624 .m_unlink = mdc_unlink,
2625 .m_cancel_unused = mdc_cancel_unused,
2626 .m_init_ea_size = mdc_init_ea_size,
2627 .m_set_lock_data = mdc_set_lock_data,
2628 .m_lock_match = mdc_lock_match,
2629 .m_get_lustre_md = mdc_get_lustre_md,
2630 .m_free_lustre_md = mdc_free_lustre_md,
2631 .m_set_open_replay_data = mdc_set_open_replay_data,
2632 .m_clear_open_replay_data = mdc_clear_open_replay_data,
2633 .m_intent_getattr_async = mdc_intent_getattr_async,
2634 .m_revalidate_lock = mdc_revalidate_lock
2637 static int __init mdc_init(void)
2639 return class_register_type(&mdc_obd_ops, &mdc_md_ops, true, NULL,
2640 LUSTRE_MDC_NAME, NULL);
2643 static void __exit mdc_exit(void)
2645 class_unregister_type(LUSTRE_MDC_NAME);
2648 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
2649 MODULE_DESCRIPTION("Lustre Metadata Client");
2650 MODULE_VERSION(LUSTRE_VERSION_STRING);
2651 MODULE_LICENSE("GPL");
2653 module_init(mdc_init);
2654 module_exit(mdc_exit);