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) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mdt/mdt_open.c
34 * Lustre Metadata Target (mdt) open/close file handling
36 * Author: Huang Hua <huanghua@clusterfs.com>
39 #define DEBUG_SUBSYSTEM S_MDS
41 #include <lustre_acl.h>
42 #include <lustre_mds.h>
43 #include <lustre_swab.h>
44 #include "mdt_internal.h"
45 #include <lustre_nodemap.h>
47 /* we do nothing because we do not have refcount now */
48 static void mdt_mfd_get(void *mfdp)
52 static const struct portals_handle_ops mfd_open_handle_ops = {
53 .hop_addref = mdt_mfd_get,
57 /* Create a new mdt_file_data struct, initialize it,
58 * and insert it to global hash table */
59 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med)
61 struct mdt_file_data *mfd;
66 INIT_LIST_HEAD_RCU(&mfd->mfd_open_handle.h_link);
68 INIT_LIST_HEAD(&mfd->mfd_list);
69 class_handle_hash(&mfd->mfd_open_handle, &mfd_open_handle_ops);
76 * Find the mfd pointed to by handle in global hash table.
77 * In case of replay the handle is obsoleted
78 * but mfd can be found in mfd list by that handle.
79 * Callers need to be holding med_open_lock.
81 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
82 const struct lustre_handle *open_handle,
83 bool is_replay_or_resent)
85 struct mdt_file_data *mfd;
88 LASSERT(open_handle != NULL);
89 mfd = class_handle2object(open_handle->cookie, &mfd_open_handle_ops);
90 /* during dw/setattr replay the mfd can be found by old handle */
91 if ((!mfd || mfd->mfd_owner != med) && is_replay_or_resent) {
92 list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
93 if (mfd->mfd_open_handle_old.cookie ==
104 void mdt_mfd_free(struct mdt_file_data *mfd)
106 LASSERT(list_empty(&mfd->mfd_list));
107 OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_open_handle);
110 static int mdt_create_data(struct mdt_thread_info *info,
111 struct mdt_object *p, struct mdt_object *o)
113 struct md_op_spec *spec = &info->mti_spec;
114 struct md_attr *ma = &info->mti_attr;
118 if (!md_should_create(spec->sp_cr_flags))
121 ma->ma_need = MA_INODE | MA_LOV;
123 mutex_lock(&o->mot_lov_mutex);
124 if (!o->mot_lov_created) {
125 rc = mdo_create_data(info->mti_env,
126 p ? mdt_object_child(p) : NULL,
127 mdt_object_child(o), spec, ma);
129 rc = mdt_attr_get_complex(info, o, ma);
131 if (rc == 0 && ma->ma_valid & MA_LOV)
132 o->mot_lov_created = 1;
135 mutex_unlock(&o->mot_lov_mutex);
139 int mdt_write_read(struct mdt_object *o)
143 spin_lock(&o->mot_write_lock);
144 rc = o->mot_write_count;
145 spin_unlock(&o->mot_write_lock);
149 int mdt_write_get(struct mdt_object *o)
153 spin_lock(&o->mot_write_lock);
154 if (o->mot_write_count < 0)
157 o->mot_write_count++;
158 spin_unlock(&o->mot_write_lock);
163 void mdt_write_put(struct mdt_object *o)
166 spin_lock(&o->mot_write_lock);
167 o->mot_write_count--;
168 spin_unlock(&o->mot_write_lock);
172 static int mdt_write_deny(struct mdt_object *o)
176 spin_lock(&o->mot_write_lock);
177 if (o->mot_write_count > 0)
180 o->mot_write_count--;
181 spin_unlock(&o->mot_write_lock);
185 static void mdt_write_allow(struct mdt_object *o)
188 spin_lock(&o->mot_write_lock);
189 o->mot_write_count++;
190 spin_unlock(&o->mot_write_lock);
194 /* there can be no real transaction so prepare the fake one */
195 static void mdt_empty_transno(struct mdt_thread_info *info, int rc)
197 struct mdt_device *mdt = info->mti_mdt;
198 struct ptlrpc_request *req = mdt_info_req(info);
199 struct tg_export_data *ted;
200 struct lsd_client_data *lcd;
203 if (mdt_rdonly(req->rq_export))
206 /* transaction has occurred already */
207 if (lustre_msg_get_transno(req->rq_repmsg) != 0)
210 if (tgt_is_multimodrpcs_client(req->rq_export)) {
213 /* generate an empty transaction to get a transno
215 th = dt_trans_create(info->mti_env, mdt->mdt_bottom);
217 rc = dt_trans_start(info->mti_env, mdt->mdt_bottom, th);
218 dt_trans_stop(info->mti_env, mdt->mdt_bottom, th);
223 spin_lock(&mdt->mdt_lut.lut_translock);
225 if (info->mti_transno != 0) {
226 struct obd_export *exp = req->rq_export;
228 CERROR("%s: replay trans %llu NID %s: rc = %d\n",
229 mdt_obd_name(mdt), info->mti_transno,
230 obd_export_nid2str(exp), rc);
231 spin_unlock(&mdt->mdt_lut.lut_translock);
234 } else if (info->mti_transno == 0) {
235 info->mti_transno = ++mdt->mdt_lut.lut_last_transno;
237 /* should be replay */
238 if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
239 mdt->mdt_lut.lut_last_transno = info->mti_transno;
241 spin_unlock(&mdt->mdt_lut.lut_translock);
243 CDEBUG(D_INODE, "transno = %llu, last_committed = %llu\n",
245 req->rq_export->exp_obd->obd_last_committed);
247 req->rq_transno = info->mti_transno;
248 lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
250 /* update lcd in memory only for resent cases */
251 ted = &req->rq_export->exp_target_data;
253 mutex_lock(&ted->ted_lcd_lock);
255 if (info->mti_transno < lcd->lcd_last_transno &&
256 info->mti_transno != 0) {
257 /* This should happen during replay. Do not update
258 * last rcvd info if replay req transno < last transno,
259 * otherwise the following resend(after replay) can not
260 * be checked correctly by xid */
261 mutex_unlock(&ted->ted_lcd_lock);
262 CDEBUG(D_HA, "%s: transno = %llu < last_transno = %llu\n",
263 mdt_obd_name(mdt), info->mti_transno,
264 lcd->lcd_last_transno);
268 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
269 if (info->mti_transno != 0)
270 lcd->lcd_last_close_transno = info->mti_transno;
271 lcd->lcd_last_close_xid = req->rq_xid;
272 lcd->lcd_last_close_result = rc;
274 /* VBR: save versions in last_rcvd for reconstruct. */
275 __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
277 lcd->lcd_pre_versions[0] = pre_versions[0];
278 lcd->lcd_pre_versions[1] = pre_versions[1];
279 lcd->lcd_pre_versions[2] = pre_versions[2];
280 lcd->lcd_pre_versions[3] = pre_versions[3];
282 if (info->mti_transno != 0)
283 lcd->lcd_last_transno = info->mti_transno;
285 lcd->lcd_last_xid = req->rq_xid;
286 lcd->lcd_last_result = rc;
287 lcd->lcd_last_data = info->mti_opdata;
289 mutex_unlock(&ted->ted_lcd_lock);
294 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags)
296 LASSERT(mfd != NULL);
298 CDEBUG(D_DENTRY, DFID " Change mfd open_flags %#llo -> %#llo.\n",
299 PFID(mdt_object_fid(mfd->mfd_object)), mfd->mfd_open_flags,
302 mfd->mfd_open_flags = open_flags;
306 * prep ma_lmm/ma_lmv for md_attr from reply
308 static void mdt_prep_ma_buf_from_rep(struct mdt_thread_info *info,
309 struct mdt_object *obj,
312 LASSERT(ma->ma_lmv == NULL && ma->ma_lmm == NULL);
313 if (S_ISDIR(obj->mot_header.loh_attr)) {
314 ma->ma_lmv = req_capsule_server_get(info->mti_pill,
316 ma->ma_lmv_size = req_capsule_get_size(info->mti_pill,
319 if (ma->ma_lmv_size > 0)
320 ma->ma_need |= MA_LMV;
322 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
324 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
327 if (ma->ma_lmm_size > 0)
328 ma->ma_need |= MA_LOV;
332 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
333 struct mdt_object *o, u64 open_flags, int created,
334 struct ldlm_reply *rep)
336 struct ptlrpc_request *req = mdt_info_req(info);
337 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
338 struct mdt_file_data *mfd;
339 struct md_attr *ma = &info->mti_attr;
340 struct lu_attr *la = &ma->ma_attr;
341 struct mdt_body *repbody;
346 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
348 isreg = S_ISREG(la->la_mode);
349 isdir = S_ISDIR(la->la_mode);
350 if (isreg && !(ma->ma_valid & MA_LOV) &&
351 !(open_flags & MDS_OPEN_RELEASE)) {
353 * No EA, check whether it is will set regEA and dirEA since in
354 * above attr get, these size might be zero, so reset it, to
355 * retrieve the MD after create obj.
357 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
360 /* in replay case, p == NULL */
361 rc = mdt_create_data(info, p, o);
365 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_DISP_STRIPE)
366 mdt_set_disposition(info, rep, DISP_OPEN_STRIPE);
369 CDEBUG(D_INODE, "after open, ma_valid bit = %#llx lmm_size = %d\n",
370 ma->ma_valid, ma->ma_lmm_size);
372 if (ma->ma_valid & MA_LOV) {
373 LASSERT(ma->ma_lmm_size != 0);
374 repbody->mbo_eadatasize = ma->ma_lmm_size;
376 repbody->mbo_valid |= OBD_MD_FLDIREA;
378 repbody->mbo_valid |= OBD_MD_FLEASIZE;
381 if (ma->ma_valid & MA_LMV) {
382 LASSERT(ma->ma_lmv_size != 0);
383 repbody->mbo_eadatasize = ma->ma_lmv_size;
385 repbody->mbo_valid |= OBD_MD_FLDIREA | OBD_MD_MEA;
388 if (open_flags & MDS_FMODE_WRITE)
389 rc = mdt_write_get(o);
390 else if (open_flags & MDS_FMODE_EXEC)
391 rc = mdt_write_deny(o);
396 rc = mo_open(info->mti_env, mdt_object_child(o),
397 created ? open_flags | MDS_OPEN_CREATED : open_flags,
400 /* If we allow the client to chgrp (CFS_SETGRP_PERM), but the
401 * client does not know which suppgid should be sent to the MDS,
402 * or some other(s) changed the target file's GID after this RPC
403 * sent to the MDS with the suppgid as the original GID, then we
404 * give the client another chance to send the right suppgid. */
406 allow_client_chgrp(info, lu_ucred(info->mti_env)))
407 mdt_set_disposition(info, rep, DISP_OPEN_DENY);
412 mfd = mdt_mfd_new(med);
414 GOTO(err_out, rc = -ENOMEM);
417 * Keep a reference on this object for this open, and is
418 * released by mdt_mfd_close().
420 mdt_object_get(info->mti_env, o);
422 mfd->mfd_xid = req->rq_xid;
425 * @open_flags is always not zero. At least it should be FMODE_READ,
426 * FMODE_WRITE or MDS_FMODE_EXEC.
428 LASSERT(open_flags != 0);
431 mdt_mfd_set_mode(mfd, open_flags);
433 atomic_inc(&o->mot_open_count);
434 if (open_flags & MDS_OPEN_LEASE)
435 atomic_inc(&o->mot_lease_count);
438 if (req_is_replay(req)) {
439 struct mdt_file_data *old_mfd;
440 /* Check wheather old cookie already exist in
441 * the list, becasue when do recovery, client
442 * might be disconnected from server, and
443 * restart replay, so there maybe some orphan
444 * mfd here, we should remove them */
445 LASSERT(info->mti_rr.rr_open_handle != NULL);
446 spin_lock(&med->med_open_lock);
447 old_mfd = mdt_open_handle2mfd(med, info->mti_rr.rr_open_handle,
449 if (old_mfd != NULL) {
450 CDEBUG(D_HA, "delete orphan mfd = %p, fid = "DFID", "
451 "cookie = %#llx\n", mfd,
452 PFID(mdt_object_fid(mfd->mfd_object)),
453 info->mti_rr.rr_open_handle->cookie);
454 class_handle_unhash(&old_mfd->mfd_open_handle);
455 list_del_init(&old_mfd->mfd_list);
456 spin_unlock(&med->med_open_lock);
457 /* no attr update for that close */
459 ma->ma_valid |= MA_FLAGS;
460 ma->ma_attr_flags |= MDS_RECOV_OPEN;
461 mdt_mfd_close(info, old_mfd);
462 ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
463 ma->ma_valid &= ~MA_FLAGS;
465 spin_unlock(&med->med_open_lock);
466 CDEBUG(D_HA, "orphan mfd not found, fid = "DFID", "
468 PFID(mdt_object_fid(mfd->mfd_object)),
469 info->mti_rr.rr_open_handle->cookie);
472 CDEBUG(D_HA, "Store old cookie %#llx in new mfd\n",
473 info->mti_rr.rr_open_handle->cookie);
475 mfd->mfd_open_handle_old = *info->mti_rr.rr_open_handle;
478 repbody->mbo_open_handle.cookie = mfd->mfd_open_handle.h_cookie;
480 if (req->rq_export->exp_disconnected) {
481 spin_lock(&med->med_open_lock);
482 class_handle_unhash(&mfd->mfd_open_handle);
483 list_del_init(&mfd->mfd_list);
484 spin_unlock(&med->med_open_lock);
485 mdt_mfd_close(info, mfd);
487 spin_lock(&med->med_open_lock);
488 list_add_tail(&mfd->mfd_list, &med->med_open_head);
489 spin_unlock(&med->med_open_lock);
492 mdt_empty_transno(info, rc);
497 if (open_flags & MDS_FMODE_WRITE)
499 else if (open_flags & MDS_FMODE_EXEC)
505 static int mdt_finish_open(struct mdt_thread_info *info,
506 struct mdt_object *p, struct mdt_object *o,
507 u64 open_flags, int created,
508 struct ldlm_reply *rep)
510 struct ptlrpc_request *req = mdt_info_req(info);
511 struct obd_export *exp = req->rq_export;
512 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
513 struct md_attr *ma = &info->mti_attr;
514 struct lu_attr *la = &ma->ma_attr;
515 struct mdt_file_data *mfd;
516 struct mdt_body *repbody;
518 int isreg, isdir, islnk;
522 LASSERT(ma->ma_valid & MA_INODE);
524 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
526 isreg = S_ISREG(la->la_mode);
527 isdir = S_ISDIR(la->la_mode);
528 islnk = S_ISLNK(la->la_mode);
529 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
531 /* compatibility check for 2.10 clients when it tries to open mirrored
532 * files. 2.10 clients don't verify overlapping components so they
533 * would read and write mirrored files just as if they were normal
534 * PFL files, which will cause the problem that sycned mirrors actually
535 * contain different data.
536 * Older clients are not a concern here because they don't even
537 * understand PFL layout. */
538 if (isreg && !exp_connect_flr(exp) && ma->ma_valid & MA_LOV &&
539 mdt_lmm_is_flr(ma->ma_lmm)) {
540 /* LU-10286: for simplicity clients who don't understand
541 * mirrored layout(with connect flag OBD_CONNECT2_FLR) won't
542 * be able to open mirrored files */
546 /* Overstriped files can crash older clients */
547 if (isreg && !exp_connect_overstriping(exp) &&
548 mdt_lmm_is_overstriping(ma->ma_lmm))
551 /* LU-2275, simulate broken behaviour (esp. prevalent in
552 * pre-2.4 servers where a very strange reply is sent on error
553 * that looks like it was actually almost successful and a
554 * failure at the same time.) */
555 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) {
556 mdt_set_disposition(info, rep, DISP_OPEN_OPEN |
560 if (open_flags & MDS_OPEN_LOCK)
561 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
566 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
567 if (exp_connect_flags(exp) & OBD_CONNECT_ACL) {
568 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
570 RETURN(PTR_ERR(nodemap));
572 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
573 nodemap_putref(nodemap);
580 * If we are following a symlink, don't open; and do not return open
581 * handle for special nodes as client required.
583 if (islnk || (!isreg && !isdir &&
584 (exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) {
585 lustre_msg_set_transno(req->rq_repmsg, 0);
590 * We need to return the existing object's fid back, so it is done here,
591 * after preparing the reply.
593 if (!created && (open_flags & MDS_OPEN_EXCL) &&
594 (open_flags & MDS_OPEN_CREAT))
597 /* This can't be done earlier, we need to return reply body */
599 if (open_flags & (MDS_OPEN_CREAT | MDS_FMODE_WRITE)) {
600 /* We are trying to create or write an existing dir. */
603 } else if (open_flags & MDS_OPEN_DIRECTORY)
606 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
607 OBD_FAIL_MDS_LDLM_REPLY_NET | OBD_FAIL_ONCE))
611 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
612 spin_lock(&med->med_open_lock);
613 list_for_each(t, &med->med_open_head) {
614 mfd = list_entry(t, struct mdt_file_data, mfd_list);
615 if (mfd->mfd_xid == req->rq_xid)
619 spin_unlock(&med->med_open_lock);
622 repbody->mbo_open_handle.cookie =
623 mfd->mfd_open_handle.h_cookie;
624 /* set repbody->ea_size for resent case */
625 if (ma->ma_valid & MA_LOV) {
626 LASSERT(ma->ma_lmm_size != 0);
627 repbody->mbo_eadatasize = ma->ma_lmm_size;
629 repbody->mbo_valid |= OBD_MD_FLDIREA;
631 repbody->mbo_valid |= OBD_MD_FLEASIZE;
633 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
638 rc = mdt_mfd_open(info, p, o, open_flags, created, rep);
640 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
645 void mdt_reconstruct_open(struct mdt_thread_info *info,
646 struct mdt_lock_handle *lhc)
648 const struct lu_env *env = info->mti_env;
649 struct mdt_device *mdt = info->mti_mdt;
650 struct req_capsule *pill = info->mti_pill;
651 struct ptlrpc_request *req = mdt_info_req(info);
652 struct md_attr *ma = &info->mti_attr;
653 struct mdt_reint_record *rr = &info->mti_rr;
654 u64 open_flags = info->mti_spec.sp_cr_flags;
655 struct ldlm_reply *ldlm_rep;
656 struct mdt_object *parent;
657 struct mdt_object *child;
658 struct mdt_body *repbody;
663 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
664 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
665 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
667 ma->ma_need = MA_INODE | MA_HSM;
670 opdata = mdt_req_from_lrd(req, info->mti_reply_data);
671 mdt_set_disposition(info, ldlm_rep, opdata);
673 CDEBUG(D_INODE, "This is reconstruct open: disp=%#llx, result=%d\n",
674 ldlm_rep->lock_policy_res1, req->rq_status);
676 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) &&
678 /* We did not create successfully, return error to client. */
679 GOTO(out, rc = req->rq_status);
681 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE)) {
682 struct obd_export *exp = req->rq_export;
684 * We failed after creation, but we do not know in which step
685 * we failed. So try to check the child object.
687 parent = mdt_object_find(env, mdt, rr->rr_fid1);
688 if (IS_ERR(parent)) {
689 rc = PTR_ERR(parent);
690 LCONSOLE_WARN("Parent "DFID" lookup error %d."
691 " Evicting client %s with export %s.\n",
692 PFID(rr->rr_fid1), rc,
693 obd_uuid2str(&exp->exp_client_uuid),
694 obd_export_nid2str(exp));
695 mdt_export_evict(exp);
699 child = mdt_object_find(env, mdt, rr->rr_fid2);
702 LCONSOLE_WARN("cannot lookup child "DFID": rc = %d; "
703 "evicting client %s with export %s\n",
704 PFID(rr->rr_fid2), rc,
705 obd_uuid2str(&exp->exp_client_uuid),
706 obd_export_nid2str(exp));
707 mdt_object_put(env, parent);
708 mdt_export_evict(exp);
712 if (unlikely(mdt_object_remote(child))) {
713 mdt_object_put(env, parent);
714 mdt_object_put(env, child);
715 /* the child object was created on remote server */
716 if (!mdt_is_dne_client(exp))
717 /* Return -EIO for old client */
718 GOTO(out, rc = -EIO);
719 repbody->mbo_fid1 = *rr->rr_fid2;
720 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
723 if (mdt_object_exists(child)) {
724 mdt_prep_ma_buf_from_rep(info, child, ma);
725 rc = mdt_attr_get_complex(info, child, ma);
727 rc = mdt_finish_open(info, parent, child,
728 open_flags, 1, ldlm_rep);
729 mdt_object_put(env, parent);
730 mdt_object_put(env, child);
732 mdt_pack_size2body(info, rr->rr_fid2,
736 /* the child does not exist, we should do regular open */
737 mdt_object_put(env, parent);
738 mdt_object_put(env, child);
740 /* We did not try to create, so we are a pure open */
741 rc = mdt_reint_open(info, lhc);
745 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
746 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
749 static int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep)
751 u64 open_flags = info->mti_spec.sp_cr_flags;
752 struct mdt_reint_record *rr = &info->mti_rr;
753 struct md_attr *ma = &info->mti_attr;
754 struct mdt_object *o;
758 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
760 RETURN(rc = PTR_ERR(o));
762 if (unlikely(mdt_object_remote(o))) {
763 /* the child object was created on remote server */
764 struct mdt_body *repbody;
766 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
769 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
770 repbody->mbo_fid1 = *rr->rr_fid2;
771 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
774 if (mdt_object_exists(o)) {
775 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
778 mdt_prep_ma_buf_from_rep(info, o, ma);
779 rc = mdt_attr_get_complex(info, o, ma);
781 rc = mdt_finish_open(info, NULL, o, open_flags,
788 mdt_object_put(info->mti_env, o);
792 /* lock object for open */
793 static int mdt_object_open_lock(struct mdt_thread_info *info,
794 struct mdt_object *obj,
795 struct mdt_lock_handle *lhc,
798 struct md_attr *ma = &info->mti_attr;
799 __u64 open_flags = info->mti_spec.sp_cr_flags;
801 enum ldlm_mode lm = LCK_CR;
802 bool acq_lease = !!(open_flags & MDS_OPEN_LEASE);
803 bool try_layout = false;
804 bool create_layout = false;
806 int dom_stripes = LMM_NO_DOM;
807 bool dom_lock = false;
812 mdt_lock_handle_init(lhc);
814 if (req_is_replay(mdt_info_req(info)))
817 if (S_ISREG(lu_object_attr(&obj->mot_obj))) {
818 if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) &&
819 md_should_create(open_flags))
820 create_layout = true;
821 if (exp_connect_layout(info->mti_exp) && !create_layout &&
822 ma->ma_need & MA_LOV)
825 /* DoM files can have just MDT stripe or combined MDT + OST
827 * - In the first case the open for read/write will do IO to
828 * the MDT stripe and it makes sense to take IO lock in
829 * advance along with OPEN even if it is blocking lock.
830 * - In the second case it is just size of MDT stripe and it
831 * is quite unlikely that client will write into it, though
832 * it may read it. So IO lock will be taken optionally if it
833 * is non-blocking one.
835 if (ma->ma_valid & MA_LOV && ma->ma_lmm != NULL)
836 dom_stripes = mdt_lmm_dom_entry(ma->ma_lmm);
838 if (dom_stripes == LMM_DOM_ONLY &&
839 info->mti_mdt->mdt_opts.mo_dom_lock > 0 &&
840 !mdt_dom_client_has_lock(info, mdt_object_fid(obj)))
845 /* lease open, acquire write mode of open sem */
846 down_write(&obj->mot_open_sem);
848 /* Lease exists and ask for new lease */
849 if (atomic_read(&obj->mot_lease_count) > 0) {
850 /* only exclusive open is supported, so lease
851 * are conflicted to each other */
852 GOTO(out, rc = -EBUSY);
855 /* Lease must be with open lock */
856 if (!(open_flags & MDS_OPEN_LOCK)) {
857 CERROR("%s: Request lease for file:"DFID ", but open lock "
858 "is missed, open_flags = %#llo : rc = %d\n",
859 mdt_obd_name(info->mti_mdt),
860 PFID(mdt_object_fid(obj)), open_flags, -EPROTO);
861 GOTO(out, rc = -EPROTO);
864 /* XXX: only exclusive open is supported. */
866 *ibits = MDS_INODELOCK_OPEN;
868 /* never grant LCK_EX layout lock to client */
870 } else { /* normal open */
871 /* normal open holds read mode of open sem */
872 down_read(&obj->mot_open_sem);
874 if (open_flags & MDS_OPEN_LOCK) {
875 if (open_flags & MDS_FMODE_WRITE)
877 else if (open_flags & MDS_FMODE_EXEC)
882 *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN;
883 } else if (atomic_read(&obj->mot_lease_count) > 0) {
884 if (open_flags & MDS_FMODE_WRITE)
890 *ibits = MDS_INODELOCK_OPEN;
893 lhc = &info->mti_lh[MDT_LH_LOCAL];
894 } else if (dom_lock) {
895 lm = (open_flags & MDS_FMODE_WRITE) ? LCK_PW : LCK_PR;
896 if (info->mti_mdt->mdt_opts.mo_dom_lock ==
897 TRYLOCK_DOM_ON_OPEN) {
898 trybits |= MDS_INODELOCK_DOM |
899 MDS_INODELOCK_LAYOUT;
901 /* mo_dom_lock == ALWAYS_DOM_LOCK_ON_OPEN */
902 *ibits = MDS_INODELOCK_DOM;
903 if (info->mti_mdt->mdt_opts.mo_dom_read_open) {
904 trybits |= MDS_INODELOCK_LAYOUT;
909 CDEBUG(D_INODE, "normal open:"DFID" lease count: %d, lm: %d\n",
910 PFID(mdt_object_fid(obj)),
911 atomic_read(&obj->mot_lease_count), lm);
914 mdt_lock_reg_init(lhc, lm);
916 /* Return lookup lock to validate inode at the client side.
917 * This is pretty important otherwise MDT will return layout
918 * lock for each open.
919 * However this is a double-edged sword because changing
920 * permission will revoke a huge number of LOOKUP locks.
922 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) {
923 if (!(*ibits & MDS_INODELOCK_LOOKUP))
924 trybits |= MDS_INODELOCK_LOOKUP;
925 trybits |= MDS_INODELOCK_LAYOUT;
928 if (*ibits | trybits)
929 rc = mdt_object_lock_try(info, obj, lhc, ibits, trybits, false);
931 CDEBUG(D_INODE, "%s: Requested bits lock:"DFID ", ibits = %#llx/%#llx"
932 ", open_flags = %#llo, try_layout = %d : rc = %d\n",
933 mdt_obd_name(info->mti_mdt), PFID(mdt_object_fid(obj)),
934 *ibits, trybits, open_flags, try_layout, rc);
936 /* will change layout, revoke layout locks by enqueuing EX lock. */
937 if (rc == 0 && create_layout) {
938 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
940 CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID
941 ", open_flags = %#llo\n",
942 PFID(mdt_object_fid(obj)), open_flags);
944 /* We cannot enqueue another lock for the same resource we
945 * already have a lock for, due to mechanics of waiting list
946 * iterating in ldlm, see LU-3601.
947 * As such we'll drop the open lock we just got above here,
948 * it's ok not to have this open lock as it's main purpose is to
949 * flush unused cached client open handles. */
950 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
951 mdt_object_unlock(info, obj, lhc, 1);
953 LASSERT(!try_layout);
954 mdt_lock_handle_init(ll);
955 mdt_lock_reg_init(ll, LCK_EX);
956 rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT);
958 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2);
961 /* Check if there is any other open handles after acquiring
962 * open lock. At this point, caching open handles have been revoked
964 * XXX: Now only exclusive open is supported. Need to check the
965 * type of open for generic lease support. */
966 if (rc == 0 && acq_lease) {
967 struct ptlrpc_request *req = mdt_info_req(info);
968 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
969 struct mdt_file_data *mfd;
970 bool is_replay_or_resent;
973 /* For lease: application can open a file and then apply lease,
974 * @handle contains original open handle in that case.
975 * In recovery, open REQ will be replayed and the lease REQ may
976 * be resent that means the open handle is already stale, so we
977 * need to fix it up here by finding new handle. */
978 is_replay_or_resent = req_is_replay(req) ||
979 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT;
981 /* if the request is _not_ a replay request, rr_open_handle
982 * may be used to hold an open file handle which is issuing the
983 * lease request, so that this openhandle doesn't count. */
984 mfd = mdt_open_handle2mfd(med, info->mti_rr.rr_open_handle,
985 is_replay_or_resent);
989 CDEBUG(D_INODE, "acq_lease "DFID": openers: %d, want: %d\n",
990 PFID(mdt_object_fid(obj)),
991 atomic_read(&obj->mot_open_count), open_count);
993 if (atomic_read(&obj->mot_open_count) > open_count)
994 GOTO(out, rc = -EBUSY);
1002 static void mdt_object_open_unlock(struct mdt_thread_info *info,
1003 struct mdt_object *obj,
1004 struct mdt_lock_handle *lhc,
1005 __u64 ibits, int rc)
1007 __u64 open_flags = info->mti_spec.sp_cr_flags;
1008 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LOCAL];
1011 if (req_is_replay(mdt_info_req(info)))
1014 /* Release local lock - the lock put in MDT_LH_LOCAL will never
1015 * return to client side. */
1016 if (lustre_handle_is_used(&ll->mlh_reg_lh))
1017 mdt_object_unlock(info, obj, ll, 1);
1019 ll = &info->mti_lh[MDT_LH_LAYOUT];
1020 /* Release local layout lock, layout was created */
1021 if (lustre_handle_is_used(&ll->mlh_reg_lh)) {
1022 LASSERT(!(ibits & MDS_INODELOCK_LAYOUT));
1023 mdt_object_unlock(info, obj, ll, 1);
1026 if (open_flags & MDS_OPEN_LEASE)
1027 up_write(&obj->mot_open_sem);
1029 up_read(&obj->mot_open_sem);
1031 /* Cross-ref case, the lock should be returned to the client */
1032 if (ibits == 0 || rc == -MDT_EREMOTE_OPEN)
1035 if (!(open_flags & MDS_OPEN_LOCK) && !(ibits & MDS_INODELOCK_LAYOUT) &&
1036 !(ibits & MDS_INODELOCK_DOM)) {
1037 /* for the open request, the lock will only return to client
1038 * if open or layout lock is granted. */
1042 if (rc != 0 || !lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1043 struct ldlm_reply *ldlm_rep;
1045 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1046 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1047 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
1048 mdt_object_unlock(info, obj, lhc, 1);
1054 * Check release is permitted for the current HSM flags.
1056 static bool mdt_hsm_release_allow(const struct md_attr *ma)
1058 if (!(ma->ma_valid & MA_HSM))
1061 if (ma->ma_hsm.mh_flags & (HS_DIRTY|HS_NORELEASE|HS_LOST))
1064 if (!(ma->ma_hsm.mh_flags & HS_ARCHIVED))
1070 static int mdt_open_by_fid_lock(struct mdt_thread_info *info,
1071 struct ldlm_reply *rep,
1072 struct mdt_lock_handle *lhc)
1074 const struct lu_env *env = info->mti_env;
1075 struct mdt_device *mdt = info->mti_mdt;
1076 u64 open_flags = info->mti_spec.sp_cr_flags;
1077 struct mdt_reint_record *rr = &info->mti_rr;
1078 struct md_attr *ma = &info->mti_attr;
1079 struct mdt_object *parent = NULL;
1080 struct mdt_object *o;
1081 bool object_locked = false;
1086 if (md_should_create(open_flags)) {
1087 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1088 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1089 if (IS_ERR(parent)) {
1090 CDEBUG(D_INODE, "Fail to find parent "DFID
1091 " for anonymous created %ld, try to"
1092 " use server-side parent.\n",
1093 PFID(rr->rr_fid1), PTR_ERR(parent));
1098 ma->ma_need |= MA_PFID;
1101 o = mdt_object_find(env, mdt, rr->rr_fid2);
1103 GOTO(out_parent_put, rc = PTR_ERR(o));
1105 if (mdt_object_remote(o)) {
1106 CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n",
1107 mdt_obd_name(info->mti_mdt),
1109 GOTO(out, rc = -EREMOTE);
1110 } else if (!mdt_object_exists(o)) {
1111 mdt_set_disposition(info, rep,
1115 GOTO(out, rc = -ENOENT);
1118 mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1120 mdt_prep_ma_buf_from_rep(info, o, ma);
1121 if (open_flags & MDS_OPEN_RELEASE)
1122 ma->ma_need |= MA_HSM;
1123 rc = mdt_attr_get_complex(info, o, ma);
1127 /* We should not change file's existing LOV EA */
1128 if (S_ISREG(lu_object_attr(&o->mot_obj)) &&
1129 open_flags & MDS_OPEN_HAS_EA && ma->ma_valid & MA_LOV)
1130 GOTO(out, rc = -EEXIST);
1132 /* If a release request, check file open flags are fine and ask for an
1133 * exclusive open access. */
1134 if (open_flags & MDS_OPEN_RELEASE && !mdt_hsm_release_allow(ma))
1135 GOTO(out, rc = -EPERM);
1137 rc = mdt_check_resent_lock(info, o, lhc);
1140 } else if (rc > 0) {
1141 rc = mdt_object_open_lock(info, o, lhc, &ibits);
1142 object_locked = true;
1144 GOTO(out_unlock, rc);
1147 if (ma->ma_valid & MA_PFID) {
1148 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1149 if (IS_ERR(parent)) {
1150 CDEBUG(D_INODE, "Fail to find parent "DFID
1151 " for anonymous created %ld, try to"
1152 " use system default.\n",
1153 PFID(&ma->ma_pfid), PTR_ERR(parent));
1158 rc = mdt_finish_open(info, parent, o, open_flags, 0, rep);
1160 mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
1161 if (open_flags & MDS_OPEN_LOCK)
1162 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1163 if (open_flags & MDS_OPEN_LEASE)
1164 mdt_set_disposition(info, rep, DISP_OPEN_LEASE);
1166 GOTO(out_unlock, rc);
1170 mdt_object_open_unlock(info, o, lhc, ibits, rc);
1172 mdt_object_put(env, o);
1174 mdt_pack_size2body(info, rr->rr_fid2, &lhc->mlh_reg_lh);
1177 mdt_object_put(env, parent);
1181 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1182 static int mdt_cross_open(struct mdt_thread_info *info,
1183 const struct lu_fid *parent_fid,
1184 const struct lu_fid *fid,
1185 struct ldlm_reply *rep, u64 open_flags)
1187 struct md_attr *ma = &info->mti_attr;
1188 struct mdt_object *o;
1192 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1194 RETURN(rc = PTR_ERR(o));
1196 if (mdt_object_remote(o)) {
1197 /* Something is wrong here, the object is on another MDS! */
1198 CERROR("%s: "DFID" isn't on this server!: rc = %d\n",
1199 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1200 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1202 "Object isn't on this server! FLD error?");
1205 if (mdt_object_exists(o)) {
1208 /* Do permission check for cross-open after converting
1209 * MDS_OPEN_* flags to MAY_* permission mask.
1211 mask = mds_accmode(open_flags);
1213 rc = mo_permission(info->mti_env, NULL,
1214 mdt_object_child(o), NULL, mask);
1218 mdt_prep_ma_buf_from_rep(info, o, ma);
1219 rc = mdt_attr_get_complex(info, o, ma);
1223 mdt_pack_secctx_in_reply(info, o);
1225 rc = mdt_finish_open(info, NULL, o, open_flags, 0, rep);
1228 * Something is wrong here. lookup was positive but
1229 * there is no object!
1231 CERROR("%s: "DFID" doesn't exist!: rc = %d\n",
1232 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1237 mdt_object_put(info->mti_env, o);
1243 * find root object and take its xattr lock if it's on remote MDT, later create
1244 * may use fs default striping (which is stored in root xattr).
1246 static int mdt_lock_root_xattr(struct mdt_thread_info *info,
1247 struct mdt_device *mdt)
1249 struct mdt_object *md_root = mdt->mdt_md_root;
1250 struct lustre_handle lhroot;
1253 if (md_root == NULL) {
1254 lu_root_fid(&info->mti_tmp_fid1);
1255 md_root = mdt_object_find(info->mti_env, mdt,
1256 &info->mti_tmp_fid1);
1257 if (IS_ERR(md_root))
1258 return PTR_ERR(md_root);
1260 spin_lock(&mdt->mdt_lock);
1261 if (mdt->mdt_md_root != NULL) {
1262 spin_unlock(&mdt->mdt_lock);
1264 LASSERTF(mdt->mdt_md_root == md_root,
1265 "Different root object ("
1266 DFID") instances, %p, %p\n",
1267 PFID(&info->mti_tmp_fid1),
1268 mdt->mdt_md_root, md_root);
1269 LASSERT(atomic_read(
1270 &md_root->mot_obj.lo_header->loh_ref) > 1);
1272 mdt_object_put(info->mti_env, md_root);
1274 mdt->mdt_md_root = md_root;
1275 spin_unlock(&mdt->mdt_lock);
1279 if (md_root->mot_cache_attr || !mdt_object_remote(md_root))
1282 rc = mdt_remote_object_lock(info, md_root, mdt_object_fid(md_root),
1283 &lhroot, LCK_PR, MDS_INODELOCK_XATTR,
1288 md_root->mot_cache_attr = 1;
1290 /* don't cancel this lock, so that we know the cached xattr is valid. */
1291 ldlm_lock_decref(&lhroot, LCK_PR);
1296 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1298 struct mdt_device *mdt = info->mti_mdt;
1299 struct ptlrpc_request *req = mdt_info_req(info);
1300 struct mdt_object *parent;
1301 struct mdt_object *child;
1302 struct mdt_lock_handle *lh;
1303 struct ldlm_reply *ldlm_rep;
1304 struct mdt_body *repbody;
1305 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1306 struct md_attr *ma = &info->mti_attr;
1307 u64 open_flags = info->mti_spec.sp_cr_flags;
1309 struct mdt_reint_record *rr = &info->mti_rr;
1312 int object_locked = 0;
1316 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1317 (obd_timeout + 1) / 4);
1319 mdt_counter_incr(req, LPROC_MDT_OPEN);
1320 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1322 ma->ma_need = MA_INODE;
1325 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1326 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1328 if (unlikely(open_flags & MDS_OPEN_JOIN_FILE)) {
1329 CERROR("file join is not supported anymore.\n");
1330 GOTO(out, result = err_serious(-EOPNOTSUPP));
1332 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1334 if ((open_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1335 info->mti_spec.u.sp_ea.eadata == NULL)
1336 GOTO(out, result = err_serious(-EINVAL));
1338 if (open_flags & MDS_FMODE_WRITE &&
1339 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
1340 GOTO(out, result = -EROFS);
1342 CDEBUG(D_INODE, "I am going to open "DFID"/("DNAME"->"DFID") "
1343 "cr_flag=%#llo mode=0%06o msg_flag=0x%x\n",
1344 PFID(rr->rr_fid1), PNAME(&rr->rr_name), PFID(rr->rr_fid2),
1345 open_flags, ma->ma_attr.la_mode, msg_flags);
1347 if (info->mti_cross_ref) {
1348 /* This is cross-ref open */
1349 mdt_set_disposition(info, ldlm_rep,
1350 (DISP_IT_EXECD | DISP_LOOKUP_EXECD |
1352 result = mdt_cross_open(info, rr->rr_fid2, rr->rr_fid1,
1353 ldlm_rep, open_flags);
1355 } else if (req_is_replay(req)) {
1356 result = mdt_open_by_fid(info, ldlm_rep);
1358 if (result != -ENOENT)
1361 /* We didn't find the correct object, so we need to re-create it
1362 * via a regular replay. */
1363 if (!(open_flags & MDS_OPEN_CREAT)) {
1364 DEBUG_REQ(D_ERROR, req,
1365 "OPEN & CREAT not in open replay/by_fid");
1366 GOTO(out, result = -EFAULT);
1368 CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
1369 } else if (open_flags & MDS_OPEN_BY_FID) {
1370 result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
1372 CDEBUG(D_INFO, "no object for "DFID": %d\n",
1373 PFID(rr->rr_fid2), result);
1377 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1378 GOTO(out, result = err_serious(-ENOMEM));
1380 mdt_set_disposition(info, ldlm_rep,
1381 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1383 if (!lu_name_is_valid(&rr->rr_name))
1384 GOTO(out, result = -EPROTO);
1386 result = mdt_lock_root_xattr(info, mdt);
1391 lh = &info->mti_lh[MDT_LH_PARENT];
1392 mdt_lock_pdo_init(lh, (open_flags & MDS_OPEN_CREAT) ? LCK_PW : LCK_PR,
1395 parent = mdt_object_find(info->mti_env, mdt, rr->rr_fid1);
1397 GOTO(out, result = PTR_ERR(parent));
1399 result = mdt_object_lock(info, parent, lh, MDS_INODELOCK_UPDATE);
1401 mdt_object_put(info->mti_env, parent);
1405 /* get and check version of parent */
1406 result = mdt_version_get_check(info, parent, 0);
1408 GOTO(out_parent, result);
1410 fid_zero(child_fid);
1413 if ((open_flags & MDS_OPEN_VOLATILE) == 0)
1414 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1415 &rr->rr_name, child_fid, &info->mti_spec);
1417 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1418 "looking for "DFID"/"DNAME", found FID = "DFID"\n",
1419 PFID(mdt_object_fid(parent)), PNAME(&rr->rr_name),
1422 if (result != 0 && result != -ENOENT && result != -ESTALE)
1423 GOTO(out_parent, result);
1425 if (result == -ENOENT || result == -ESTALE) {
1426 /* If the object is dead, let's check if the object
1427 * is being migrated to a new object */
1428 if (result == -ESTALE) {
1429 struct lu_buf lmv_buf;
1431 lmv_buf.lb_buf = info->mti_xattr_buf;
1432 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
1433 rc = mo_xattr_get(info->mti_env,
1434 mdt_object_child(parent),
1435 &lmv_buf, XATTR_NAME_LMV);
1437 struct lmv_mds_md_v1 *lmv;
1439 lmv = lmv_buf.lb_buf;
1440 if (le32_to_cpu(lmv->lmv_hash_type) &
1441 LMV_HASH_FLAG_MIGRATION) {
1442 /* Get the new parent FID and retry */
1443 mdt_object_unlock_put(info, parent,
1445 mdt_lock_handle_init(lh);
1447 (struct lu_fid *)rr->rr_fid1,
1448 &lmv->lmv_stripe_fids[1]);
1454 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1455 if (result == -ESTALE) {
1457 * -ESTALE means the parent is a dead(unlinked) dir, so
1458 * it should return -ENOENT to in accordance with the
1459 * original mds implementaion.
1461 GOTO(out_parent, result = -ENOENT);
1464 if (!(open_flags & MDS_OPEN_CREAT))
1465 GOTO(out_parent, result);
1466 if (mdt_rdonly(req->rq_export))
1467 GOTO(out_parent, result = -EROFS);
1468 *child_fid = *info->mti_rr.rr_fid2;
1469 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1471 /* In the function below, .hs_keycmp resolves to
1472 * lu_obj_hop_keycmp() */
1473 /* coverity[overrun-buffer-val] */
1474 child = mdt_object_new(info->mti_env, mdt, child_fid);
1477 * Check for O_EXCL is moved to the mdt_finish_open(),
1478 * we need to return FID back in that case.
1480 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1481 child = mdt_object_find(info->mti_env, mdt, child_fid);
1484 GOTO(out_parent, result = PTR_ERR(child));
1486 /** check version of child */
1487 rc = mdt_version_get_check(info, child, 1);
1489 GOTO(out_child, result = rc);
1491 if (result == -ENOENT) {
1492 /* Create under OBF and .lustre is not permitted */
1493 if (!fid_is_md_operative(rr->rr_fid1) &&
1494 (open_flags & MDS_OPEN_VOLATILE) == 0)
1495 GOTO(out_child, result = -EPERM);
1497 /* save versions in reply */
1498 mdt_version_get_save(info, parent, 0);
1499 mdt_version_get_save(info, child, 1);
1501 /* version of child will be changed */
1502 tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(child));
1504 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1505 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1507 /* Let lower layers know what is lock mode on directory. */
1508 info->mti_spec.sp_cr_mode =
1509 mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
1511 /* Don't do lookup sanity check. We know name doesn't exist. */
1512 info->mti_spec.sp_cr_lookup = 0;
1513 info->mti_spec.sp_feat = &dt_directory_features;
1515 result = mdo_create(info->mti_env, mdt_object_child(parent),
1516 &rr->rr_name, mdt_object_child(child),
1517 &info->mti_spec, &info->mti_attr);
1518 if (result == -ERESTART) {
1519 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1520 GOTO(out_child, result);
1522 mdt_prep_ma_buf_from_rep(info, child, ma);
1523 /* XXX: we should call this once, see few lines below */
1525 result = mdt_attr_get_complex(info, child, ma);
1528 GOTO(out_child, result);
1531 mdt_counter_incr(req, LPROC_MDT_MKNOD);
1534 * The object is on remote node, return its FID for remote open.
1536 if (mdt_object_remote(child)) {
1538 * Check if this lock already was sent to client and
1539 * this is resent case. For resent case do not take lock
1540 * again, use what is already granted.
1542 LASSERT(lhc != NULL);
1544 rc = mdt_check_resent_lock(info, child, lhc);
1546 GOTO(out_child, result = rc);
1547 } else if (rc > 0) {
1548 mdt_lock_handle_init(lhc);
1549 mdt_lock_reg_init(lhc, LCK_PR);
1551 rc = mdt_object_lock(info, child, lhc,
1552 MDS_INODELOCK_LOOKUP);
1554 repbody->mbo_fid1 = *mdt_object_fid(child);
1555 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
1559 result = -MDT_EREMOTE_OPEN;
1560 GOTO(out_child, result);
1561 } else if (mdt_object_exists(child)) {
1562 /* We have to get attr & LOV EA & HSM for this
1564 mdt_prep_ma_buf_from_rep(info, child, ma);
1565 ma->ma_need |= MA_HSM;
1566 result = mdt_attr_get_complex(info, child, ma);
1568 GOTO(out_child, result);
1570 /* Object does not exist. Likely FS corruption. */
1571 CERROR("%s: name '"DNAME"' present, but FID "
1572 DFID" is invalid\n", mdt_obd_name(info->mti_mdt),
1573 PNAME(&rr->rr_name), PFID(child_fid));
1574 GOTO(out_child, result = -EIO);
1578 mdt_pack_secctx_in_reply(info, child);
1580 rc = mdt_check_resent_lock(info, child, lhc);
1582 GOTO(out_child, result = rc);
1583 } else if (rc == 0) {
1584 /* the open lock might already be gotten in
1585 * ldlm_handle_enqueue() */
1586 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
1587 if (open_flags & MDS_OPEN_LOCK)
1588 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1590 /* get openlock if this isn't replay and client requested it */
1591 if (!req_is_replay(req)) {
1592 rc = mdt_object_open_lock(info, child, lhc, &ibits);
1595 GOTO(out_child_unlock, result = rc);
1596 else if (open_flags & MDS_OPEN_LOCK)
1597 mdt_set_disposition(info, ldlm_rep,
1601 /* Try to open it now. */
1602 rc = mdt_finish_open(info, parent, child, open_flags,
1606 /* openlock will be released if mdt_finish_open() failed */
1607 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1609 if (created && (open_flags & MDS_OPEN_VOLATILE)) {
1610 CERROR("%s: cannot open volatile file "DFID", orphan "
1611 "file will be left in PENDING directory until "
1612 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1613 PFID(mdt_object_fid(child)), rc);
1614 GOTO(out_child_unlock, result);
1620 rc = mdo_unlink(info->mti_env,
1621 mdt_object_child(parent),
1622 mdt_object_child(child),
1624 &info->mti_attr, 0);
1626 CERROR("%s: "DFID" cleanup of open: rc = %d\n",
1627 mdt_obd_name(info->mti_mdt),
1628 PFID(mdt_object_fid(child)), rc);
1629 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1635 mdt_object_open_unlock(info, child, lhc, ibits, result);
1637 mdt_object_put(info->mti_env, child);
1639 mdt_pack_size2body(info, child_fid, &lhc->mlh_reg_lh);
1641 mdt_object_unlock_put(info, parent, lh, result || !created);
1644 lustre_msg_set_transno(req->rq_repmsg, 0);
1649 * Create an orphan object use local root.
1651 static struct mdt_object *mdt_orphan_open(struct mdt_thread_info *info,
1652 struct mdt_device *mdt,
1653 const struct lu_fid *fid,
1654 struct md_attr *attr, fmode_t fmode)
1656 const struct lu_env *env = info->mti_env;
1657 struct md_op_spec *spec = &info->mti_spec;
1658 struct lu_fid *local_root_fid = &info->mti_tmp_fid1;
1659 struct mdt_object *obj = NULL;
1660 struct mdt_object *local_root;
1661 static const struct lu_name lname = {
1662 .ln_name = "i_am_nobody",
1663 .ln_namelen = sizeof("i_am_nobody") - 1,
1665 struct lu_ucred *uc;
1666 cfs_cap_t uc_cap_save;
1670 rc = dt_root_get(env, mdt->mdt_bottom, local_root_fid);
1672 RETURN(ERR_PTR(rc));
1674 local_root = mdt_object_find(env, mdt, local_root_fid);
1675 if (IS_ERR(local_root))
1678 obj = mdt_object_new(env, mdt, fid);
1680 GOTO(out, rc = PTR_ERR(obj));
1682 spec->sp_cr_lookup = 0;
1683 spec->sp_feat = &dt_directory_features;
1684 spec->sp_cr_mode = MDL_MINMODE; /* no lock */
1685 spec->sp_cr_flags = MDS_OPEN_VOLATILE | fmode;
1686 if (attr->ma_valid & MA_LOV) {
1687 spec->u.sp_ea.eadata = attr->ma_lmm;
1688 spec->u.sp_ea.eadatalen = attr->ma_lmm_size;
1689 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1691 spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE;
1695 uc_cap_save = uc->uc_cap;
1696 uc->uc_cap |= 1 << CFS_CAP_DAC_OVERRIDE;
1697 rc = mdo_create(env, mdt_object_child(local_root), &lname,
1698 mdt_object_child(obj), spec, attr);
1699 uc->uc_cap = uc_cap_save;
1701 CERROR("%s: cannot create volatile file "DFID": rc = %d\n",
1702 mdt_obd_name(mdt), PFID(fid), rc);
1706 rc = mo_open(env, mdt_object_child(obj), MDS_OPEN_CREATED, spec);
1708 CERROR("%s: cannot open volatile file "DFID", orphan "
1709 "file will be left in PENDING directory until "
1710 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1717 mdt_object_put(env, obj);
1720 mdt_object_put(env, local_root);
1724 /* XXX Look into layout in MDT layer. */
1725 static inline int mdt_hsm_set_released(struct lov_mds_md *lmm)
1727 struct lov_comp_md_v1 *comp_v1;
1728 struct lov_mds_md *v1;
1732 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_COMP_V1_DEFINED)) {
1733 comp_v1 = (struct lov_comp_md_v1 *)lmm;
1735 if (comp_v1->lcm_entry_count == 0)
1738 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
1739 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
1740 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
1741 v1->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
1744 lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
1749 static inline int mdt_get_lmm_gen(struct lov_mds_md *lmm, __u32 *gen)
1751 struct lov_comp_md_v1 *comp_v1;
1753 if (le32_to_cpu(lmm->lmm_magic == LOV_MAGIC_COMP_V1)) {
1754 comp_v1 = (struct lov_comp_md_v1 *)lmm;
1755 *gen = le32_to_cpu(comp_v1->lcm_layout_gen);
1756 } else if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
1757 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3) {
1758 *gen = le16_to_cpu(lmm->lmm_layout_gen);
1765 static int mdt_hsm_release(struct mdt_thread_info *info, struct mdt_object *o,
1768 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LAYOUT];
1769 struct lu_ucred *uc = mdt_ucred(info);
1770 struct close_data *data;
1771 struct ldlm_lock *lease;
1772 struct mdt_object *orphan;
1773 struct md_attr *orp_ma;
1781 if (mdt_rdonly(info->mti_exp))
1784 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
1788 lease = ldlm_handle2lock(&data->cd_handle);
1792 /* try to hold open_sem so that nobody else can open the file */
1793 if (!down_write_trylock(&o->mot_open_sem)) {
1794 ldlm_lock_cancel(lease);
1795 GOTO(out_reprocess, rc = -EBUSY);
1798 /* Check if the lease open lease has already canceled */
1799 lock_res_and_lock(lease);
1800 lease_broken = ldlm_is_cancel(lease);
1801 unlock_res_and_lock(lease);
1803 LDLM_DEBUG(lease, DFID " lease broken? %d",
1804 PFID(mdt_object_fid(o)), lease_broken);
1806 /* Cancel server side lease. Client side counterpart should
1807 * have been cancelled. It's okay to cancel it now as we've
1808 * held mot_open_sem. */
1809 ldlm_lock_cancel(lease);
1811 if (lease_broken) /* don't perform release task */
1812 GOTO(out_unlock, rc = -ESTALE);
1814 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
1815 GOTO(out_unlock, rc = -EINVAL);
1817 /* ma_need was set before but it seems fine to change it in order to
1818 * avoid modifying the one from RPC */
1819 ma->ma_need = MA_HSM;
1820 rc = mdt_attr_get_complex(info, o, ma);
1822 GOTO(out_unlock, rc);
1824 if (ma->ma_attr_flags & MDS_PCC_ATTACH) {
1825 if (ma->ma_valid & MA_HSM) {
1826 if (ma->ma_hsm.mh_flags & HS_RELEASED)
1827 GOTO(out_unlock, rc = -EALREADY);
1829 if (ma->ma_hsm.mh_arch_id != data->cd_archive_id)
1831 DFID" archive id diff: %llu:%u\n",
1832 PFID(mdt_object_fid(o)),
1833 ma->ma_hsm.mh_arch_id,
1834 data->cd_archive_id);
1836 if (!(ma->ma_hsm.mh_flags & HS_DIRTY) &&
1837 ma->ma_hsm.mh_arch_ver == data->cd_data_version) {
1839 DFID" data version matches: packed=%llu "
1840 "and on-disk=%llu\n",
1841 PFID(mdt_object_fid(o)),
1842 data->cd_data_version,
1843 ma->ma_hsm.mh_arch_ver);
1844 ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
1847 if (ma->ma_hsm.mh_flags & HS_DIRTY)
1848 ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
1850 /* Set up HSM attribte for PCC archived object */
1851 BUILD_BUG_ON(sizeof(struct hsm_attrs) >
1852 sizeof(info->mti_xattr_buf));
1853 buf = &info->mti_buf;
1854 buf->lb_buf = info->mti_xattr_buf;
1855 buf->lb_len = sizeof(struct hsm_attrs);
1856 memset(&ma->ma_hsm, 0, sizeof(ma->ma_hsm));
1857 ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
1858 ma->ma_hsm.mh_arch_id = data->cd_archive_id;
1859 ma->ma_hsm.mh_arch_ver = data->cd_data_version;
1860 lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
1862 rc = mo_xattr_set(info->mti_env, mdt_object_child(o),
1863 buf, XATTR_NAME_HSM, 0);
1865 GOTO(out_unlock, rc);
1868 if (!mdt_hsm_release_allow(ma))
1869 GOTO(out_unlock, rc = -EPERM);
1871 /* already released? */
1872 if (ma->ma_hsm.mh_flags & HS_RELEASED)
1873 GOTO(out_unlock, rc = 0);
1875 /* Compare on-disk and packed data_version */
1876 if (data->cd_data_version != ma->ma_hsm.mh_arch_ver) {
1877 CDEBUG(D_HSM, DFID" data_version mismatches: "
1878 "packed=%llu and on-disk=%llu\n",
1879 PFID(mdt_object_fid(o)),
1880 data->cd_data_version,
1881 ma->ma_hsm.mh_arch_ver);
1882 GOTO(out_unlock, rc = -EPERM);
1886 ma->ma_valid = MA_INODE;
1887 ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME | LA_SIZE;
1888 rc = mo_attr_set(info->mti_env, mdt_object_child(o), ma);
1890 GOTO(out_unlock, rc);
1892 mutex_lock(&o->mot_som_mutex);
1893 rc2 = mdt_set_som(info, o, SOM_FL_STRICT, ma->ma_attr.la_size,
1894 ma->ma_attr.la_blocks);
1895 mutex_unlock(&o->mot_som_mutex);
1898 "%s: File "DFID" SOM update failed: rc = %d\n",
1899 mdt_obd_name(info->mti_mdt),
1900 PFID(mdt_object_fid(o)), rc2);
1903 ma->ma_need = MA_INODE | MA_LOV;
1904 rc = mdt_attr_get_complex(info, o, ma);
1906 GOTO(out_unlock, rc);
1908 if (!(ma->ma_valid & MA_LOV)) {
1909 /* Even empty file are released */
1910 memset(ma->ma_lmm, 0, sizeof(*ma->ma_lmm));
1911 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEFINED);
1912 ma->ma_lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
1913 ma->ma_lmm->lmm_stripe_size = cpu_to_le32(LOV_MIN_STRIPE_SIZE);
1914 ma->ma_lmm_size = sizeof(*ma->ma_lmm);
1916 /* Magic must be LOV_MAGIC_*_DEFINED or LOD will interpret
1917 * ma_lmm as lov_user_md, then it will be confused by union of
1918 * layout_gen and stripe_offset. */
1919 if ((le32_to_cpu(ma->ma_lmm->lmm_magic) & LOV_MAGIC_MASK) ==
1921 ma->ma_lmm->lmm_magic |= cpu_to_le32(LOV_MAGIC_DEFINED);
1923 GOTO(out_unlock, rc = -EINVAL);
1926 /* Set file as released. */
1927 rc = mdt_hsm_set_released(ma->ma_lmm);
1929 GOTO(out_unlock, rc);
1931 orp_ma = &info->mti_u.hsm.attr;
1932 orp_ma->ma_attr.la_mode = S_IFREG | S_IWUSR;
1933 /* We use root ownership to bypass potential quota
1934 * restrictions on the user and group of the file. */
1935 orp_ma->ma_attr.la_uid = 0;
1936 orp_ma->ma_attr.la_gid = 0;
1937 orp_ma->ma_attr.la_valid = LA_MODE | LA_UID | LA_GID;
1938 orp_ma->ma_lmm = ma->ma_lmm;
1939 orp_ma->ma_lmm_size = ma->ma_lmm_size;
1940 orp_ma->ma_valid = MA_INODE | MA_LOV;
1941 orphan = mdt_orphan_open(info, info->mti_mdt, &data->cd_fid, orp_ma,
1943 if (IS_ERR(orphan)) {
1944 CERROR("%s: cannot open orphan file "DFID": rc = %ld\n",
1945 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid),
1947 GOTO(out_unlock, rc = PTR_ERR(orphan));
1950 /* Set up HSM attribute for orphan object */
1951 BUILD_BUG_ON(sizeof(struct hsm_attrs) > sizeof(info->mti_xattr_buf));
1952 buf = &info->mti_buf;
1953 buf->lb_buf = info->mti_xattr_buf;
1954 buf->lb_len = sizeof(struct hsm_attrs);
1955 ma->ma_hsm.mh_flags |= HS_RELEASED;
1956 lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
1957 ma->ma_hsm.mh_flags &= ~HS_RELEASED;
1959 mdt_lock_reg_init(lh, LCK_EX);
1960 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_LAYOUT |
1961 MDS_INODELOCK_XATTR);
1963 GOTO(out_close, rc);
1965 /* The orphan has root ownership so we need to raise
1966 * CAP_FOWNER to set the HSM attributes. */
1968 uc->uc_cap |= MD_CAP_TO_MASK(CFS_CAP_FOWNER);
1969 rc = mo_xattr_set(info->mti_env, mdt_object_child(orphan), buf,
1973 GOTO(out_layout_lock, rc);
1975 /* Swap layout with orphan objects. */
1976 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o),
1977 mdt_object_child(orphan),
1978 SWAP_LAYOUTS_MDS_HSM);
1980 if (!rc && ma->ma_attr_flags & MDS_PCC_ATTACH) {
1981 ma->ma_need = MA_LOV;
1982 rc = mdt_attr_get_complex(info, o, ma);
1988 /* Release exclusive LL */
1989 mdt_object_unlock(info, o, lh, 1);
1991 /* Close orphan object anyway */
1992 rc2 = mo_close(info->mti_env, mdt_object_child(orphan), orp_ma,
1995 CERROR("%s: error closing volatile file "DFID": rc = %d\n",
1996 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid), rc2);
1997 LU_OBJECT_DEBUG(D_HSM, info->mti_env, &orphan->mot_obj,
1999 mdt_object_put(info->mti_env, orphan);
2002 up_write(&o->mot_open_sem);
2004 /* already released */
2006 struct mdt_body *repbody;
2008 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2009 LASSERT(repbody != NULL);
2010 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2011 if (ma->ma_attr_flags & MDS_PCC_ATTACH) {
2012 LASSERT(ma->ma_valid & MA_LOV);
2013 rc = mdt_get_lmm_gen(ma->ma_lmm,
2014 &repbody->mbo_layout_gen);
2016 repbody->mbo_valid |= OBD_MD_LAYOUT_VERSION;
2021 ldlm_reprocess_all(lease->l_resource, lease);
2022 LDLM_LOCK_PUT(lease);
2030 int mdt_close_handle_layouts(struct mdt_thread_info *info,
2031 struct mdt_object *o, struct md_attr *ma)
2033 struct mdt_lock_handle *lh1 = &info->mti_lh[MDT_LH_NEW];
2034 struct mdt_lock_handle *lh2 = &info->mti_lh[MDT_LH_OLD];
2035 struct close_data *data;
2036 struct ldlm_lock *lease;
2037 struct mdt_object *o1 = o, *o2;
2043 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
2046 if (!S_ISREG(lu_object_attr(&o1->mot_obj)))
2049 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
2053 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
2056 rc = lu_fid_cmp(&data->cd_fid, mdt_object_fid(o));
2057 if (unlikely(rc == 0))
2060 /* Exchange o1 and o2, to enforce locking order */
2061 swap_objects = (rc < 0);
2063 lease = ldlm_handle2lock(&data->cd_handle);
2067 o2 = mdt_object_find(info->mti_env, info->mti_mdt, &data->cd_fid);
2069 GOTO(out_lease, rc = PTR_ERR(o2));
2071 if (!S_ISREG(lu_object_attr(&o2->mot_obj))) {
2072 swap_objects = false; /* not swapped yet */
2073 GOTO(out_obj, rc = -EINVAL);
2079 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
2084 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
2089 /* try to hold open_sem so that nobody else can open the file */
2090 if (!down_write_trylock(&o->mot_open_sem)) {
2091 ldlm_lock_cancel(lease);
2092 GOTO(out_obj, rc = -EBUSY);
2095 /* Check if the lease open lease has already canceled */
2096 lock_res_and_lock(lease);
2097 lease_broken = ldlm_is_cancel(lease);
2098 unlock_res_and_lock(lease);
2100 LDLM_DEBUG(lease, DFID " lease broken? %d",
2101 PFID(mdt_object_fid(o)), lease_broken);
2103 /* Cancel server side lease. Client side counterpart should
2104 * have been cancelled. It's okay to cancel it now as we've
2105 * held mot_open_sem. */
2106 ldlm_lock_cancel(lease);
2109 GOTO(out_unlock_sem, rc = -ESTALE);
2111 mdt_lock_reg_init(lh1, LCK_EX);
2112 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
2113 MDS_INODELOCK_XATTR);
2115 GOTO(out_unlock_sem, rc);
2117 mdt_lock_reg_init(lh2, LCK_EX);
2118 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
2119 MDS_INODELOCK_XATTR);
2121 GOTO(out_unlock1, rc);
2123 /* Swap layout with orphan object */
2124 if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SWAP) {
2125 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
2126 mdt_object_child(o2), 0);
2127 } else if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_MERGE ||
2128 ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT) {
2129 struct lu_buf *buf = &info->mti_buf;
2130 struct md_rejig_data mrd;
2132 mrd.mrd_obj = mdt_object_child(o == o1 ? o2 : o1);
2133 if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT)
2134 mrd.mrd_mirror_id = data->cd_mirror_id;
2136 buf->lb_len = sizeof(mrd);
2138 rc = mo_xattr_set(info->mti_env, mdt_object_child(o), buf,
2140 ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT ?
2141 LU_XATTR_SPLIT : LU_XATTR_MERGE);
2142 if (rc == 0 && ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS)) {
2145 mutex_lock(&o->mot_som_mutex);
2146 rc2 = mdt_set_som(info, o, SOM_FL_STRICT,
2147 ma->ma_attr.la_size,
2148 ma->ma_attr.la_blocks);
2149 mutex_unlock(&o->mot_som_mutex);
2151 CERROR(DFID": Setting i_blocks error: %d, "
2152 "i_blocks will be reported wrongly and "
2153 "can only be fixed in next resync\n",
2154 PFID(mdt_object_fid(o)), rc2);
2158 GOTO(out_unlock2, rc);
2163 /* Release exclusive LL */
2164 mdt_object_unlock(info, o2, lh2, 1);
2167 mdt_object_unlock(info, o1, lh1, 1);
2170 up_write(&o->mot_open_sem);
2172 /* already swapped */
2174 struct mdt_body *repbody;
2176 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2177 LASSERT(repbody != NULL);
2178 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2182 mdt_object_put(info->mti_env, swap_objects ? o1 : o2);
2184 ldlm_reprocess_all(lease->l_resource, lease);
2187 LDLM_LOCK_PUT(lease);
2197 static int mdt_close_resync_done(struct mdt_thread_info *info,
2198 struct mdt_object *o, struct md_attr *ma)
2200 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LOCAL];
2201 struct close_data *data;
2202 struct ldlm_lock *lease;
2203 struct md_layout_change layout = { 0 };
2204 __u32 *resync_ids = NULL;
2205 size_t resync_count = 0;
2211 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
2214 if (!S_ISREG(lu_object_attr(&o->mot_obj)))
2217 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
2221 if (ptlrpc_req_need_swab(mdt_info_req(info)))
2222 lustre_swab_close_data_resync_done(&data->cd_resync);
2224 if (!fid_is_zero(&data->cd_fid))
2227 lease = ldlm_handle2lock(&data->cd_handle);
2231 /* try to hold open_sem so that nobody else can open the file */
2232 if (!down_write_trylock(&o->mot_open_sem)) {
2233 ldlm_lock_cancel(lease);
2234 GOTO(out_reprocess, rc = -EBUSY);
2237 /* Check if the lease open lease has already canceled */
2238 lock_res_and_lock(lease);
2239 lease_broken = ldlm_is_cancel(lease);
2240 unlock_res_and_lock(lease);
2242 LDLM_DEBUG(lease, DFID " lease broken? %d\n",
2243 PFID(mdt_object_fid(o)), lease_broken);
2245 /* Cancel server side lease. Client side counterpart should
2246 * have been cancelled. It's okay to cancel it now as we've
2247 * held mot_open_sem. */
2248 ldlm_lock_cancel(lease);
2250 if (lease_broken) /* don't perform release task */
2251 GOTO(out_unlock, rc = -ESTALE);
2253 resync_count = data->cd_resync.resync_count;
2255 if (resync_count > INLINE_RESYNC_ARRAY_SIZE) {
2258 if (!req_capsule_has_field(info->mti_pill, &RMF_U32,
2260 GOTO(out_unlock, rc = -EPROTO);
2262 OBD_ALLOC(resync_ids, resync_count * sizeof(__u32));
2264 GOTO(out_unlock, rc = -ENOMEM);
2266 data = req_capsule_client_get(info->mti_pill, &RMF_U32);
2267 memcpy(resync_ids, data, resync_count * sizeof(__u32));
2269 layout.mlc_resync_ids = resync_ids;
2271 layout.mlc_resync_ids = data->cd_resync.resync_ids_inline;
2274 layout.mlc_opc = MD_LAYOUT_RESYNC_DONE;
2275 layout.mlc_resync_count = resync_count;
2276 if (ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS)) {
2277 layout.mlc_som.lsa_valid = SOM_FL_STRICT;
2278 layout.mlc_som.lsa_size = ma->ma_attr.la_size;
2279 layout.mlc_som.lsa_blocks = ma->ma_attr.la_blocks;
2281 rc = mdt_layout_change(info, o, lhc, &layout);
2283 GOTO(out_unlock, rc);
2285 mdt_object_unlock(info, o, lhc, 0);
2290 up_write(&o->mot_open_sem);
2292 /* already released */
2294 struct mdt_body *repbody;
2296 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2297 LASSERT(repbody != NULL);
2298 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2302 OBD_FREE(resync_ids, resync_count * sizeof(__u32));
2305 ldlm_reprocess_all(lease->l_resource, lease);
2306 LDLM_LOCK_PUT(lease);
2314 #define MFD_CLOSED(open_flags) ((open_flags) == MDS_FMODE_CLOSED)
2316 static int mdt_mfd_closed(struct mdt_file_data *mfd)
2318 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_open_flags));
2321 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
2323 struct mdt_object *o = mfd->mfd_object;
2324 struct md_object *next = mdt_object_child(o);
2325 struct md_attr *ma = &info->mti_attr;
2326 struct lu_fid *ofid = &info->mti_tmp_fid1;
2333 open_flags = mfd->mfd_open_flags;
2334 intent = ma->ma_attr_flags & MDS_CLOSE_INTENT;
2335 *ofid = *mdt_object_fid(o);
2337 /* the below message is checked in replay-single.sh test_46 */
2338 CDEBUG(D_INODE, "%s: %sclosing file handle "DFID" with intent: %llx\n",
2339 mdt_obd_name(info->mti_mdt),
2340 ma->ma_valid & MA_FORCE_LOG ? "force " : "", PFID(ofid), intent);
2343 case MDS_HSM_RELEASE: {
2344 rc = mdt_hsm_release(info, o, ma);
2346 CDEBUG(D_HSM, "%s: File " DFID " release failed: %d\n",
2347 mdt_obd_name(info->mti_mdt),
2349 /* continue to close even error occurred. */
2353 case MDS_CLOSE_LAYOUT_MERGE:
2354 case MDS_CLOSE_LAYOUT_SPLIT:
2355 case MDS_CLOSE_LAYOUT_SWAP: {
2356 rc = mdt_close_handle_layouts(info, o, ma);
2359 "%s: cannot swap layout of "DFID": rc = %d\n",
2360 mdt_obd_name(info->mti_mdt),
2362 /* continue to close even if error occurred. */
2366 case MDS_CLOSE_RESYNC_DONE:
2367 rc = mdt_close_resync_done(info, o, ma);
2374 if (S_ISREG(lu_object_attr(&o->mot_obj)) &&
2375 ma->ma_attr.la_valid & (LA_LSIZE | LA_LBLOCKS)) {
2378 rc2 = mdt_lsom_update(info, o, false);
2381 "%s: File " DFID " LSOM failed: rc = %d\n",
2382 mdt_obd_name(info->mti_mdt),
2384 /* continue to close even if error occured. */
2387 if (open_flags & MDS_FMODE_WRITE)
2389 else if (open_flags & MDS_FMODE_EXEC)
2392 /* Update atime on close only. */
2393 if ((open_flags & MDS_FMODE_EXEC || open_flags & MDS_FMODE_READ ||
2394 open_flags & MDS_FMODE_WRITE) && (ma->ma_valid & MA_INODE) &&
2395 (ma->ma_attr.la_valid & LA_ATIME)) {
2396 /* Set the atime only. */
2397 ma->ma_valid = MA_INODE;
2398 ma->ma_attr.la_valid = LA_ATIME;
2399 rc = mo_attr_set(info->mti_env, next, ma);
2402 /* If file data is modified, add the dirty flag. */
2403 if (ma->ma_attr_flags & MDS_DATA_MODIFIED)
2404 rc = mdt_add_dirty_flag(info, o, ma);
2406 ma->ma_need |= MA_INODE;
2407 ma->ma_valid &= ~MA_INODE;
2409 LASSERT(atomic_read(&o->mot_open_count) > 0);
2410 atomic_dec(&o->mot_open_count);
2411 mdt_handle_last_unlink(info, o, ma);
2413 if (!MFD_CLOSED(open_flags)) {
2414 rc = mo_close(info->mti_env, next, ma, open_flags);
2415 if (mdt_dom_check_for_discard(info, o))
2416 mdt_dom_discard_data(info, o);
2419 /* adjust open and lease count */
2420 if (open_flags & MDS_OPEN_LEASE) {
2421 LASSERT(atomic_read(&o->mot_lease_count) > 0);
2422 atomic_dec(&o->mot_lease_count);
2426 mdt_object_put(info->mti_env, o);
2431 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
2432 struct mdt_body *repbody)
2434 struct mdt_export_data *med;
2435 struct mdt_file_data *mfd;
2440 med = &req->rq_export->exp_mdt_data;
2441 spin_lock(&med->med_open_lock);
2442 mfd = mdt_open_handle2mfd(med, &info->mti_open_handle,
2443 req_is_replay(req));
2444 if (mdt_mfd_closed(mfd)) {
2445 spin_unlock(&med->med_open_lock);
2446 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
2447 ": cookie = %#llx\n", PFID(info->mti_rr.rr_fid1),
2448 info->mti_open_handle.cookie);
2449 /** not serious error since bug 3633 */
2452 class_handle_unhash(&mfd->mfd_open_handle);
2453 list_del_init(&mfd->mfd_list);
2454 spin_unlock(&med->med_open_lock);
2455 ret = mdt_mfd_close(info, mfd);
2458 RETURN(rc ? rc : ret);
2461 int mdt_close(struct tgt_session_info *tsi)
2463 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2464 struct ptlrpc_request *req = tgt_ses_req(tsi);
2465 struct md_attr *ma = &info->mti_attr;
2466 struct mdt_body *repbody = NULL;
2470 mdt_counter_incr(req, LPROC_MDT_CLOSE);
2471 /* Close may come with the Size-on-MDS update. Unpack it. */
2472 rc = mdt_close_unpack(info);
2474 GOTO(out, rc = err_serious(rc));
2476 /* These fields are no longer used and are left for compatibility.
2477 * size is always zero */
2478 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
2480 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
2482 rc = req_capsule_server_pack(info->mti_pill);
2483 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2484 mdt_client_compatibility(info);
2486 mdt_fix_reply(info);
2487 mdt_exit_ucred(info);
2488 GOTO(out, rc = lustre_msg_get_status(req->rq_repmsg));
2491 /* Continue to close handle even if we can not pack reply */
2493 repbody = req_capsule_server_get(info->mti_pill,
2495 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
2497 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
2500 ma->ma_need = MA_INODE | MA_LOV;
2501 repbody->mbo_eadatasize = 0;
2502 repbody->mbo_aclsize = 0;
2504 rc = err_serious(rc);
2507 rc = mdt_close_internal(info, req, repbody);
2509 mdt_empty_transno(info, rc);
2511 if (repbody != NULL) {
2512 mdt_client_compatibility(info);
2513 rc = mdt_fix_reply(info);
2516 mdt_exit_ucred(info);
2517 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
2518 GOTO(out, rc = err_serious(-ENOMEM));
2520 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
2521 OBD_FAIL_MDS_CLOSE_NET_REP))
2522 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
2524 mdt_thread_info_fini(info);
2525 RETURN(rc ? rc : ret);