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/
31 * lustre/mdt/mdt_open.c
33 * Lustre Metadata Target (mdt) open/close file handling
35 * Author: Huang Hua <huanghua@clusterfs.com>
38 #define DEBUG_SUBSYSTEM S_MDS
40 #include <lustre_acl.h>
41 #include <lustre_mds.h>
42 #include <lustre_swab.h>
43 #include "mdt_internal.h"
44 #include <lustre_nodemap.h>
46 static const char mfd_open_handle_owner[] = "mdt";
48 static int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep,
49 struct mdt_lock_handle *lhc);
51 /* Create a new mdt_file_data struct, initialize it,
52 * and insert it to global hash table */
53 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med)
55 struct mdt_file_data *mfd;
60 refcount_set(&mfd->mfd_open_handle.h_ref, 1);
61 INIT_HLIST_NODE(&mfd->mfd_open_handle.h_link);
63 INIT_LIST_HEAD(&mfd->mfd_list);
64 class_handle_hash(&mfd->mfd_open_handle, mfd_open_handle_owner);
71 * Find the mfd pointed to by handle in global hash table.
72 * In case of replay the handle is obsoleted
73 * but mfd can be found in mfd list by that handle.
74 * Callers need to be holding med_open_lock.
76 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
77 const struct lustre_handle *open_handle,
78 bool is_replay_or_resent)
80 struct mdt_file_data *mfd;
83 LASSERT(open_handle != NULL);
84 mfd = class_handle2object(open_handle->cookie, mfd_open_handle_owner);
86 refcount_dec(&mfd->mfd_open_handle.h_ref);
88 /* during dw/setattr replay the mfd can be found by old handle */
89 if ((!mfd || mfd->mfd_owner != med) && is_replay_or_resent) {
90 list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
91 if (mfd->mfd_open_handle_old.cookie ==
102 void mdt_mfd_free(struct mdt_file_data *mfd)
104 LASSERT(refcount_read(&mfd->mfd_open_handle.h_ref) == 1);
105 LASSERT(list_empty(&mfd->mfd_list));
106 OBD_FREE_PRE(mfd, sizeof(*mfd), "rcu");
107 kfree_rcu(mfd, mfd_open_handle.h_rcu);
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 if (ma->ma_lmv || ma->ma_lmm) {
313 CDEBUG(D_INFO, DFID " %s already set.\n",
314 PFID(mdt_object_fid(obj)),
315 ma->ma_lmv ? (ma->ma_lmm ? "ma_lmv and ma_lmm"
321 if (S_ISDIR(obj->mot_header.loh_attr)) {
322 ma->ma_lmv = req_capsule_server_get(info->mti_pill,
324 ma->ma_lmv_size = req_capsule_get_size(info->mti_pill,
327 if (ma->ma_lmv_size > 0)
328 ma->ma_need |= MA_LMV;
330 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
332 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
335 if (ma->ma_lmm_size > 0)
336 ma->ma_need |= MA_LOV;
340 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
341 struct mdt_object *o, u64 open_flags, int created,
342 struct ldlm_reply *rep)
344 struct ptlrpc_request *req = mdt_info_req(info);
345 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
346 struct mdt_file_data *mfd;
347 struct md_attr *ma = &info->mti_attr;
348 struct lu_attr *la = &ma->ma_attr;
349 struct mdt_body *repbody;
354 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
356 isreg = S_ISREG(la->la_mode);
357 isdir = S_ISDIR(la->la_mode);
358 if (isreg && !(ma->ma_valid & MA_LOV) &&
359 !(open_flags & MDS_OPEN_RELEASE)) {
361 * No EA, check whether it is will set regEA and dirEA since in
362 * above attr get, these size might be zero, so reset it, to
363 * retrieve the MD after create obj.
365 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
368 /* in replay case, p == NULL */
369 rc = mdt_create_data(info, p, o);
373 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_DISP_STRIPE)
374 mdt_set_disposition(info, rep, DISP_OPEN_STRIPE);
377 CDEBUG(D_INODE, "after open, ma_valid bit = %#llx lmm_size = %d\n",
378 ma->ma_valid, ma->ma_lmm_size);
380 if (ma->ma_valid & MA_LOV) {
381 LASSERT(ma->ma_lmm_size != 0);
382 repbody->mbo_eadatasize = ma->ma_lmm_size;
384 repbody->mbo_valid |= OBD_MD_FLDIREA;
386 repbody->mbo_valid |= OBD_MD_FLEASIZE;
389 if (ma->ma_valid & MA_LMV) {
390 LASSERT(ma->ma_lmv_size != 0);
391 repbody->mbo_eadatasize = ma->ma_lmv_size;
393 repbody->mbo_valid |= OBD_MD_FLDIREA | OBD_MD_MEA;
396 if (open_flags & MDS_FMODE_WRITE)
397 rc = mdt_write_get(o);
398 else if (open_flags & MDS_FMODE_EXEC)
399 rc = mdt_write_deny(o);
404 rc = mo_open(info->mti_env, mdt_object_child(o),
405 created ? open_flags | MDS_OPEN_CREATED : open_flags,
408 /* If we allow the client to chgrp (CFS_SETGRP_PERM), but the
409 * client does not know which suppgid should be sent to the MDS,
410 * or some other(s) changed the target file's GID after this RPC
411 * sent to the MDS with the suppgid as the original GID, then we
412 * give the client another chance to send the right suppgid. */
414 allow_client_chgrp(info, lu_ucred(info->mti_env)))
415 mdt_set_disposition(info, rep, DISP_OPEN_DENY);
420 mfd = mdt_mfd_new(med);
422 GOTO(err_out, rc = -ENOMEM);
425 * Keep a reference on this object for this open, and is
426 * released by mdt_mfd_close().
428 mdt_object_get(info->mti_env, o);
430 mfd->mfd_xid = req->rq_xid;
433 * @open_flags is always not zero. At least it should be FMODE_READ,
434 * FMODE_WRITE or MDS_FMODE_EXEC.
436 LASSERT(open_flags != 0);
439 mdt_mfd_set_mode(mfd, open_flags);
441 atomic_inc(&o->mot_open_count);
442 if (open_flags & MDS_OPEN_LEASE)
443 atomic_inc(&o->mot_lease_count);
446 if (req_is_replay(req)) {
447 struct mdt_file_data *old_mfd;
448 /* Check wheather old cookie already exist in
449 * the list, becasue when do recovery, client
450 * might be disconnected from server, and
451 * restart replay, so there maybe some orphan
452 * mfd here, we should remove them */
453 LASSERT(info->mti_rr.rr_open_handle != NULL);
454 spin_lock(&med->med_open_lock);
455 old_mfd = mdt_open_handle2mfd(med, info->mti_rr.rr_open_handle,
457 if (old_mfd != NULL) {
458 CDEBUG(D_HA, "delete orphan mfd = %p, fid = "DFID", "
459 "cookie = %#llx\n", mfd,
460 PFID(mdt_object_fid(mfd->mfd_object)),
461 info->mti_rr.rr_open_handle->cookie);
462 class_handle_unhash(&old_mfd->mfd_open_handle);
463 list_del_init(&old_mfd->mfd_list);
464 spin_unlock(&med->med_open_lock);
465 /* no attr update for that close */
467 ma->ma_valid |= MA_FLAGS;
468 ma->ma_attr_flags |= MDS_RECOV_OPEN;
469 mdt_mfd_close(info, old_mfd);
470 ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
471 ma->ma_valid &= ~MA_FLAGS;
473 spin_unlock(&med->med_open_lock);
474 CDEBUG(D_HA, "orphan mfd not found, fid = "DFID", "
476 PFID(mdt_object_fid(mfd->mfd_object)),
477 info->mti_rr.rr_open_handle->cookie);
480 CDEBUG(D_HA, "Store old cookie %#llx in new mfd\n",
481 info->mti_rr.rr_open_handle->cookie);
483 mfd->mfd_open_handle_old = *info->mti_rr.rr_open_handle;
486 repbody->mbo_open_handle.cookie = mfd->mfd_open_handle.h_cookie;
488 if (req->rq_export->exp_disconnected) {
489 spin_lock(&med->med_open_lock);
490 class_handle_unhash(&mfd->mfd_open_handle);
491 list_del_init(&mfd->mfd_list);
492 spin_unlock(&med->med_open_lock);
493 mdt_mfd_close(info, mfd);
495 spin_lock(&med->med_open_lock);
496 list_add_tail(&mfd->mfd_list, &med->med_open_head);
497 spin_unlock(&med->med_open_lock);
500 mdt_empty_transno(info, rc);
505 if (open_flags & MDS_FMODE_WRITE)
507 else if (open_flags & MDS_FMODE_EXEC)
513 static int mdt_finish_open(struct mdt_thread_info *info,
514 struct mdt_object *p, struct mdt_object *o,
516 struct ldlm_reply *rep)
518 struct ptlrpc_request *req = mdt_info_req(info);
519 struct obd_export *exp = req->rq_export;
520 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
521 struct md_attr *ma = &info->mti_attr;
522 struct lu_attr *la = &ma->ma_attr;
523 struct mdt_file_data *mfd;
524 struct mdt_body *repbody;
527 int isreg, isdir, islnk;
531 LASSERT(ma->ma_valid & MA_INODE);
532 created = mdt_get_disposition(rep, DISP_OPEN_CREATE);
534 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
536 isreg = S_ISREG(la->la_mode);
537 isdir = S_ISDIR(la->la_mode);
538 islnk = S_ISLNK(la->la_mode);
539 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
541 /* compatibility check for 2.10 clients when it tries to open mirrored
542 * files. 2.10 clients don't verify overlapping components so they
543 * would read and write mirrored files just as if they were normal
544 * PFL files, which will cause the problem that sycned mirrors actually
545 * contain different data.
546 * Older clients are not a concern here because they don't even
547 * understand PFL layout. */
548 if (isreg && !exp_connect_flr(exp) && ma->ma_valid & MA_LOV &&
549 mdt_lmm_is_flr(ma->ma_lmm)) {
550 /* LU-10286: for simplicity clients who don't understand
551 * mirrored layout(with connect flag OBD_CONNECT2_FLR) won't
552 * be able to open mirrored files */
556 /* Overstriped files can crash older clients */
557 if (isreg && !exp_connect_overstriping(exp) &&
558 mdt_lmm_is_overstriping(ma->ma_lmm))
561 /* LU-2275, simulate broken behaviour (esp. prevalent in
562 * pre-2.4 servers where a very strange reply is sent on error
563 * that looks like it was actually almost successful and a
564 * failure at the same time.) */
565 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) {
566 mdt_set_disposition(info, rep, DISP_OPEN_OPEN |
570 if (open_flags & MDS_OPEN_LOCK)
571 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
576 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
577 if (exp_connect_flags(exp) & OBD_CONNECT_ACL) {
578 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
580 RETURN(PTR_ERR(nodemap));
582 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
583 nodemap_putref(nodemap);
590 * If we are following a symlink, don't open; and do not return open
591 * handle for special nodes as client required.
593 if (islnk || (!isreg && !isdir &&
594 (exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) {
595 lustre_msg_set_transno(req->rq_repmsg, 0);
600 * We need to return the existing object's fid back, so it is done here,
601 * after preparing the reply.
603 if (!created && (open_flags & MDS_OPEN_EXCL) &&
604 (open_flags & MDS_OPEN_CREAT))
607 /* This can't be done earlier, we need to return reply body */
609 if (open_flags & (MDS_OPEN_CREAT | MDS_FMODE_WRITE)) {
610 /* We are trying to create or write an existing dir. */
613 } else if (open_flags & MDS_OPEN_DIRECTORY)
616 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
617 OBD_FAIL_MDS_LDLM_REPLY_NET | OBD_FAIL_ONCE))
621 if (info->mti_rr.rr_flags & MRF_OPEN_RESEND) {
622 spin_lock(&med->med_open_lock);
623 list_for_each(t, &med->med_open_head) {
624 mfd = list_entry(t, struct mdt_file_data, mfd_list);
625 if (mfd->mfd_xid == req->rq_xid) {
626 repbody->mbo_open_handle.cookie =
627 mfd->mfd_open_handle.h_cookie;
632 spin_unlock(&med->med_open_lock);
635 /* set repbody->ea_size for resent case */
636 if (ma->ma_valid & MA_LOV) {
637 LASSERT(ma->ma_lmm_size != 0);
638 repbody->mbo_eadatasize = ma->ma_lmm_size;
640 repbody->mbo_valid |= OBD_MD_FLDIREA;
642 repbody->mbo_valid |= OBD_MD_FLEASIZE;
644 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
647 /* if we have a real resend (not a resend afrer failover), it
648 * means close is already happend, so lets return error
653 rc = mdt_mfd_open(info, p, o, open_flags, created, rep);
655 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
660 void mdt_reconstruct_open(struct mdt_thread_info *info,
661 struct mdt_lock_handle *lhc)
663 struct req_capsule *pill = info->mti_pill;
664 struct ptlrpc_request *req = mdt_info_req(info);
665 struct mdt_reint_record *rr = &info->mti_rr;
666 struct md_attr *ma = &info->mti_attr;
667 struct ldlm_reply *ldlm_rep;
672 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
673 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
675 ma->ma_need = MA_INODE | MA_HSM;
677 opdata = mdt_req_from_lrd(req, info->mti_reply_data);
678 mdt_set_disposition(info, ldlm_rep, opdata);
680 CDEBUG(D_INODE, "This is reconstruct open: disp=%#llx, result=%d\n",
681 ldlm_rep->lock_policy_res1, req->rq_status);
683 /* We did not create successfully, return error to client. */
684 GOTO(out, rc = req->rq_status);
686 /* tg_reply_data is just memory only structure, so any non zero fid
687 * means a real resend not a resend after recovery which need to be
688 * handled as regular open
690 if (likely(!fid_is_zero(&info->mti_reply_data->trd_object))) {
691 rr->rr_fid2 = &info->mti_reply_data->trd_object;
692 rr->rr_flags |= MRF_OPEN_RESEND;
693 rc = mdt_open_by_fid(info, ldlm_rep, lhc);
695 lustre_msg_set_transno(req->rq_repmsg, 0);
697 /* We did not try to create, so we are a pure open */
698 rc = mdt_reint_open(info, lhc);
703 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
704 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
707 static int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep,
708 struct mdt_lock_handle *lhc)
710 u64 open_flags = info->mti_spec.sp_cr_flags;
711 struct mdt_reint_record *rr = &info->mti_rr;
712 struct md_attr *ma = &info->mti_attr;
713 struct mdt_object *o;
717 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
719 RETURN(rc = PTR_ERR(o));
721 rc = mdt_check_enc(info, o);
725 if (unlikely(mdt_object_remote(o))) {
726 /* the child object was created on remote server */
727 struct mdt_body *repbody;
729 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
732 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
733 repbody->mbo_fid1 = *rr->rr_fid2;
734 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
737 if (mdt_object_exists(o)) {
738 tgt_open_obj_set(info->mti_env, mdt_obj2dt(o));
739 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
742 if ((open_flags & MDS_OPEN_EXCL) &&
743 (open_flags & MDS_OPEN_CREAT))
744 mdt_set_disposition(info, rep,
747 mdt_prep_ma_buf_from_rep(info, o, ma);
748 rc = mdt_attr_get_complex(info, o, ma);
751 rc = mdt_finish_open(info, NULL, o, open_flags, rep);
754 mdt_pack_size2body(info, rr->rr_fid2, &lhc->mlh_reg_lh);
761 mdt_object_put(info->mti_env, o);
765 /* lock object for open */
766 static int mdt_object_open_lock(struct mdt_thread_info *info,
767 struct mdt_object *obj,
768 struct mdt_lock_handle *lhc,
771 struct md_attr *ma = &info->mti_attr;
772 __u64 open_flags = info->mti_spec.sp_cr_flags;
774 enum ldlm_mode lm = LCK_CR;
775 bool acq_lease = !!(open_flags & MDS_OPEN_LEASE);
776 bool try_layout = false;
777 bool create_layout = false;
779 __u32 dom_stripe = 0;
780 unsigned int dom_only = 0;
781 unsigned int dom_lock = 0;
786 mdt_lock_handle_init(lhc);
788 if (req_is_replay(mdt_info_req(info)))
791 if (S_ISREG(lu_object_attr(&obj->mot_obj))) {
792 if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) &&
793 md_should_create(open_flags))
794 create_layout = true;
795 if (exp_connect_layout(info->mti_exp) && !create_layout &&
796 ma->ma_need & MA_LOV)
799 /* DoM files can take IO lock at OPEN when it makes sense,
800 * check if file has DoM stripe and ask for lock if client
801 * no lock on that resource yet.
803 if (ma->ma_valid & MA_LOV && ma->ma_lmm != NULL)
804 dom_stripe = mdt_lmm_dom_entry_check(ma->ma_lmm,
806 /* If only DOM stripe is being used then we can expect IO
807 * to it after OPEN and will return corresponding DOM ibit
808 * using default strategy from mdt_opts.mo_dom_lock.
809 * Otherwise trylock mode is used always and DOM ibit will
810 * be returned optionally.
813 !mdt_dom_client_has_lock(info, mdt_object_fid(obj)))
814 dom_lock = !dom_only ? TRYLOCK_DOM_ON_OPEN :
815 info->mti_mdt->mdt_opts.mo_dom_lock;
819 /* lease open, acquire write mode of open sem */
820 down_write(&obj->mot_open_sem);
822 /* Lease exists and ask for new lease */
823 if (atomic_read(&obj->mot_lease_count) > 0) {
824 /* only exclusive open is supported, so lease
825 * are conflicted to each other */
826 GOTO(out, rc = -EBUSY);
829 /* Lease must be with open lock */
830 if (!(open_flags & MDS_OPEN_LOCK)) {
831 CERROR("%s: Request lease for file:"DFID ", but open lock "
832 "is missed, open_flags = %#llo : rc = %d\n",
833 mdt_obd_name(info->mti_mdt),
834 PFID(mdt_object_fid(obj)), open_flags, -EPROTO);
835 GOTO(out, rc = -EPROTO);
838 /* should conflict with new opens for write/execute */
840 *ibits = MDS_INODELOCK_OPEN;
842 /* never grant LCK_EX layout lock to client */
844 } else { /* normal open */
845 /* normal open holds read mode of open sem */
846 down_read(&obj->mot_open_sem);
848 if (open_flags & MDS_OPEN_LOCK) {
849 if (open_flags & MDS_FMODE_WRITE)
851 else if (open_flags & MDS_FMODE_EXEC)
856 *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN;
857 } else if (atomic_read(&obj->mot_lease_count) > 0) {
858 if (open_flags & MDS_FMODE_WRITE)
864 *ibits = MDS_INODELOCK_OPEN;
867 lhc = &info->mti_lh[MDT_LH_LOCAL];
868 } else if (dom_lock) {
869 lm = (open_flags & MDS_FMODE_WRITE) ? LCK_PW : LCK_PR;
870 trybits |= MDS_INODELOCK_DOM | MDS_INODELOCK_LAYOUT;
873 CDEBUG(D_INODE, "normal open:"DFID" lease count: %d, lm: %d\n",
874 PFID(mdt_object_fid(obj)),
875 atomic_read(&obj->mot_lease_count), lm);
878 mdt_lock_reg_init(lhc, lm);
880 /* Return lookup lock to validate inode at the client side.
881 * This is pretty important otherwise MDT will return layout
882 * lock for each open.
883 * However this is a double-edged sword because changing
884 * permission will revoke a huge number of LOOKUP locks.
886 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) {
887 if (!(*ibits & MDS_INODELOCK_LOOKUP))
888 trybits |= MDS_INODELOCK_LOOKUP;
889 trybits |= MDS_INODELOCK_LAYOUT;
892 if (*ibits | trybits)
893 rc = mdt_object_lock_try(info, obj, lhc, ibits, trybits, false);
895 CDEBUG(D_INODE, "%s: Requested bits lock:"DFID ", ibits = %#llx/%#llx"
896 ", open_flags = %#llo, try_layout = %d : rc = %d\n",
897 mdt_obd_name(info->mti_mdt), PFID(mdt_object_fid(obj)),
898 *ibits, trybits, open_flags, try_layout, rc);
900 /* will change layout, revoke layout locks by enqueuing EX lock. */
901 if (rc == 0 && create_layout) {
902 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
904 CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID
905 ", open_flags = %#llo\n",
906 PFID(mdt_object_fid(obj)), open_flags);
908 /* We cannot enqueue another lock for the same resource we
909 * already have a lock for, due to mechanics of waiting list
910 * iterating in ldlm, see LU-3601.
911 * As such we'll drop the open lock we just got above here,
912 * it's ok not to have this open lock as it's main purpose is to
913 * flush unused cached client open handles. */
914 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
915 mdt_object_unlock(info, obj, lhc, 1);
917 LASSERT(!try_layout);
918 mdt_lock_handle_init(ll);
919 mdt_lock_reg_init(ll, LCK_EX);
920 rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT);
922 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2);
925 /* Check if there is any other open handles after acquiring
926 * open lock. At this point, caching open handles have been revoked
928 * XXX: Now only exclusive open is supported. Need to check the
929 * type of open for generic lease support. */
930 if (rc == 0 && acq_lease) {
931 struct ptlrpc_request *req = mdt_info_req(info);
932 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
933 struct mdt_file_data *mfd;
934 bool is_replay_or_resent;
937 /* For lease: application can open a file and then apply lease,
938 * @handle contains original open handle in that case.
939 * In recovery, open REQ will be replayed and the lease REQ may
940 * be resent that means the open handle is already stale, so we
941 * need to fix it up here by finding new handle. */
942 is_replay_or_resent = req_is_replay(req) ||
943 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT;
945 /* if the request is _not_ a replay request, rr_open_handle
946 * may be used to hold an open file handle which is issuing the
947 * lease request, so that this openhandle doesn't count. */
948 mfd = mdt_open_handle2mfd(med, info->mti_rr.rr_open_handle,
949 is_replay_or_resent);
953 CDEBUG(D_INODE, "acq_lease "DFID": openers: %d, want: %d\n",
954 PFID(mdt_object_fid(obj)),
955 atomic_read(&obj->mot_open_count), open_count);
957 if (atomic_read(&obj->mot_open_count) > open_count) {
958 /* fail if anyone *else* has opened file for write */
959 if (mdt_write_read(obj) > 1)
960 GOTO(out, rc = -EBUSY);
969 static void mdt_object_open_unlock(struct mdt_thread_info *info,
970 struct mdt_object *obj,
971 struct mdt_lock_handle *lhc,
974 __u64 open_flags = info->mti_spec.sp_cr_flags;
975 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LOCAL];
978 if (req_is_replay(mdt_info_req(info)))
981 /* Release local lock - the lock put in MDT_LH_LOCAL will never
982 * return to client side. */
983 if (lustre_handle_is_used(&ll->mlh_reg_lh))
984 mdt_object_unlock(info, obj, ll, 1);
986 ll = &info->mti_lh[MDT_LH_LAYOUT];
987 /* Release local layout lock, layout was created */
988 if (lustre_handle_is_used(&ll->mlh_reg_lh)) {
989 LASSERT(!(ibits & MDS_INODELOCK_LAYOUT));
990 mdt_object_unlock(info, obj, ll, 1);
993 if (open_flags & MDS_OPEN_LEASE)
994 up_write(&obj->mot_open_sem);
996 up_read(&obj->mot_open_sem);
998 /* Cross-ref case, the lock should be returned to the client */
999 if (ibits == 0 || rc == -MDT_EREMOTE_OPEN)
1002 if (!(open_flags & MDS_OPEN_LOCK) && !(ibits & MDS_INODELOCK_LAYOUT) &&
1003 !(ibits & MDS_INODELOCK_DOM)) {
1004 /* for the open request, the lock will only return to client
1005 * if open or layout lock is granted. */
1009 if (rc != 0 || !lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1010 struct ldlm_reply *ldlm_rep;
1012 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1013 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1014 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
1015 mdt_object_unlock(info, obj, lhc, 1);
1021 * Check release is permitted for the current HSM flags.
1023 static bool mdt_hsm_release_allow(const struct md_attr *ma)
1025 if (!(ma->ma_valid & MA_HSM))
1028 if (ma->ma_hsm.mh_flags & (HS_DIRTY|HS_NORELEASE|HS_LOST))
1031 if (!(ma->ma_hsm.mh_flags & HS_ARCHIVED))
1037 static int mdt_open_by_fid_lock(struct mdt_thread_info *info,
1038 struct ldlm_reply *rep,
1039 struct mdt_lock_handle *lhc)
1041 const struct lu_env *env = info->mti_env;
1042 struct mdt_device *mdt = info->mti_mdt;
1043 u64 open_flags = info->mti_spec.sp_cr_flags;
1044 struct mdt_reint_record *rr = &info->mti_rr;
1045 struct md_attr *ma = &info->mti_attr;
1046 struct mdt_object *parent = NULL;
1047 struct mdt_object *o;
1048 bool object_locked = false;
1053 if (md_should_create(open_flags)) {
1054 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1055 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1056 if (IS_ERR(parent)) {
1057 CDEBUG(D_INODE, "Fail to find parent "DFID
1058 " for anonymous created %ld, try to"
1059 " use server-side parent.\n",
1060 PFID(rr->rr_fid1), PTR_ERR(parent));
1065 ma->ma_need |= MA_PFID;
1068 o = mdt_object_find(env, mdt, rr->rr_fid2);
1070 GOTO(out_parent_put, rc = PTR_ERR(o));
1072 if (mdt_object_remote(o)) {
1073 CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n",
1074 mdt_obd_name(info->mti_mdt),
1076 GOTO(out, rc = -EREMOTE);
1077 } else if (!mdt_object_exists(o)) {
1078 mdt_set_disposition(info, rep,
1082 GOTO(out, rc = -ENOENT);
1085 /* do not check enc for directory: always allow open */
1086 if (!S_ISDIR(lu_object_attr(&o->mot_obj))) {
1087 rc = mdt_check_enc(info, o);
1092 mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1094 mdt_prep_ma_buf_from_rep(info, o, ma);
1095 if (open_flags & MDS_OPEN_RELEASE)
1096 ma->ma_need |= MA_HSM;
1097 rc = mdt_attr_get_complex(info, o, ma);
1101 /* We should not change file's existing LOV EA */
1102 if (S_ISREG(lu_object_attr(&o->mot_obj)) &&
1103 open_flags & MDS_OPEN_HAS_EA && ma->ma_valid & MA_LOV)
1104 GOTO(out, rc = -EEXIST);
1106 /* If a release request, check file open flags are fine and ask for an
1107 * exclusive open access. */
1108 if (open_flags & MDS_OPEN_RELEASE && !mdt_hsm_release_allow(ma))
1109 GOTO(out, rc = -EPERM);
1111 rc = mdt_check_resent_lock(info, o, lhc);
1114 } else if (rc > 0) {
1115 rc = mdt_object_open_lock(info, o, lhc, &ibits);
1116 object_locked = true;
1118 GOTO(out_unlock, rc);
1121 if (ma->ma_valid & MA_PFID) {
1122 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1123 if (IS_ERR(parent)) {
1124 CDEBUG(D_INODE, "Fail to find parent "DFID
1125 " for anonymous created %ld, try to"
1126 " use system default.\n",
1127 PFID(&ma->ma_pfid), PTR_ERR(parent));
1132 tgt_open_obj_set(info->mti_env, mdt_obj2dt(o));
1133 rc = mdt_finish_open(info, parent, o, open_flags, rep);
1135 mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
1136 if (open_flags & MDS_OPEN_LOCK)
1137 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1138 if (open_flags & MDS_OPEN_LEASE)
1139 mdt_set_disposition(info, rep, DISP_OPEN_LEASE);
1141 GOTO(out_unlock, rc);
1145 mdt_object_open_unlock(info, o, lhc, ibits, rc);
1147 mdt_object_put(env, o);
1149 mdt_pack_size2body(info, rr->rr_fid2, &lhc->mlh_reg_lh);
1152 mdt_object_put(env, parent);
1156 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1157 static int mdt_cross_open(struct mdt_thread_info *info,
1158 const struct lu_fid *parent_fid,
1159 const struct lu_fid *fid,
1160 struct ldlm_reply *rep, u64 open_flags)
1162 struct md_attr *ma = &info->mti_attr;
1163 struct mdt_object *o;
1167 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1169 RETURN(rc = PTR_ERR(o));
1171 rc = mdt_check_enc(info, o);
1175 if (mdt_object_remote(o)) {
1176 /* Something is wrong here, the object is on another MDS! */
1177 CERROR("%s: "DFID" isn't on this server!: rc = %d\n",
1178 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1179 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1181 "Object isn't on this server! FLD error?");
1184 if (mdt_object_exists(o)) {
1187 /* Do permission check for cross-open after converting
1188 * MDS_OPEN_* flags to MAY_* permission mask.
1190 mask = mds_accmode(open_flags);
1192 rc = mo_permission(info->mti_env, NULL,
1193 mdt_object_child(o), NULL, mask);
1197 mdt_prep_ma_buf_from_rep(info, o, ma);
1198 rc = mdt_attr_get_complex(info, o, ma);
1202 rc = mdt_pack_secctx_in_reply(info, o);
1206 rc = mdt_pack_encctx_in_reply(info, o);
1210 rc = mdt_finish_open(info, NULL, o, open_flags, rep);
1213 * Something is wrong here. lookup was positive but
1214 * there is no object!
1216 CERROR("%s: "DFID" doesn't exist!: rc = %d\n",
1217 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1222 mdt_object_put(info->mti_env, o);
1228 * find root object and take its xattr lock if it's on remote MDT, later create
1229 * may use fs default striping (which is stored in root xattr).
1231 static int mdt_lock_root_xattr(struct mdt_thread_info *info,
1232 struct mdt_device *mdt)
1234 struct mdt_object *md_root = mdt->mdt_md_root;
1235 struct lustre_handle lhroot;
1238 if (md_root == NULL) {
1239 lu_root_fid(&info->mti_tmp_fid1);
1240 md_root = mdt_object_find(info->mti_env, mdt,
1241 &info->mti_tmp_fid1);
1242 if (IS_ERR(md_root))
1243 return PTR_ERR(md_root);
1245 spin_lock(&mdt->mdt_lock);
1246 if (mdt->mdt_md_root != NULL) {
1247 spin_unlock(&mdt->mdt_lock);
1249 LASSERTF(mdt->mdt_md_root == md_root,
1250 "Different root object ("
1251 DFID") instances, %p, %p\n",
1252 PFID(&info->mti_tmp_fid1),
1253 mdt->mdt_md_root, md_root);
1254 LASSERT(atomic_read(
1255 &md_root->mot_obj.lo_header->loh_ref) > 1);
1257 mdt_object_put(info->mti_env, md_root);
1259 mdt->mdt_md_root = md_root;
1260 spin_unlock(&mdt->mdt_lock);
1264 if (md_root->mot_cache_attr || !mdt_object_remote(md_root))
1267 rc = mdt_remote_object_lock(info, md_root, mdt_object_fid(md_root),
1268 &lhroot, LCK_PR, MDS_INODELOCK_XATTR,
1273 md_root->mot_cache_attr = 1;
1275 /* don't cancel this lock, so that we know the cached xattr is valid. */
1276 ldlm_lock_decref(&lhroot, LCK_PR);
1281 static inline enum ldlm_mode mdt_open_lock_mode(struct mdt_thread_info *info,
1282 struct mdt_object *p,
1283 struct lu_name *name,
1289 /* We don't need to take the DLM lock for a volatile */
1290 if (open_flags & MDS_OPEN_VOLATILE)
1293 if (!(open_flags & MDS_OPEN_CREAT))
1296 result = mdo_lookup(info->mti_env, mdt_object_child(p), name, &fid,
1299 /* If the file exists we only need a read lock on the parent */
1300 return (result == 0) ? LCK_PR : LCK_PW;
1303 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1305 struct mdt_device *mdt = info->mti_mdt;
1306 struct ptlrpc_request *req = mdt_info_req(info);
1307 struct mdt_object *parent;
1308 struct mdt_object *child;
1309 struct mdt_lock_handle *lh = NULL;
1310 struct ldlm_reply *ldlm_rep;
1311 struct mdt_body *repbody;
1312 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1313 struct md_attr *ma = &info->mti_attr;
1314 u64 open_flags = info->mti_spec.sp_cr_flags;
1316 struct mdt_reint_record *rr = &info->mti_rr;
1319 int object_locked = 0;
1320 enum ldlm_mode lock_mode;
1322 ktime_t kstart = ktime_get();
1325 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1326 (obd_timeout + 1) / 4);
1328 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1330 ma->ma_need = MA_INODE;
1333 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1334 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1336 if (unlikely(open_flags & MDS_OPEN_JOIN_FILE)) {
1337 CERROR("file join is not supported anymore.\n");
1338 GOTO(out, result = err_serious(-EOPNOTSUPP));
1340 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1342 if ((open_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1343 info->mti_spec.u.sp_ea.eadata == NULL)
1344 GOTO(out, result = err_serious(-EINVAL));
1346 if (open_flags & MDS_FMODE_WRITE &&
1347 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
1348 GOTO(out, result = -EROFS);
1350 CDEBUG(D_INODE, "I am going to open "DFID"/("DNAME"->"DFID") "
1351 "cr_flag=%#llo mode=0%06o msg_flag=0x%x\n",
1352 PFID(rr->rr_fid1), PNAME(&rr->rr_name), PFID(rr->rr_fid2),
1353 open_flags, ma->ma_attr.la_mode, msg_flags);
1355 if (info->mti_cross_ref) {
1356 /* This is cross-ref open */
1357 mdt_set_disposition(info, ldlm_rep,
1358 (DISP_IT_EXECD | DISP_LOOKUP_EXECD |
1360 result = mdt_cross_open(info, rr->rr_fid2, rr->rr_fid1,
1361 ldlm_rep, open_flags);
1363 } else if (req_is_replay(req)) {
1364 result = mdt_open_by_fid(info, ldlm_rep, lhc);
1366 if (result != -ENOENT)
1369 /* We didn't find the correct object, so we need to re-create it
1370 * via a regular replay. */
1371 if (!(open_flags & MDS_OPEN_CREAT)) {
1372 DEBUG_REQ(D_ERROR, req,
1373 "OPEN & CREAT not in open replay/by_fid");
1374 GOTO(out, result = -EFAULT);
1376 CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
1377 } else if (open_flags & MDS_OPEN_BY_FID) {
1378 result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
1380 CDEBUG(D_INFO, "no object for "DFID": %d\n",
1381 PFID(rr->rr_fid2), result);
1385 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1386 GOTO(out, result = err_serious(-ENOMEM));
1388 mdt_set_disposition(info, ldlm_rep,
1389 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1391 if (!lu_name_is_valid(&rr->rr_name))
1392 GOTO(out, result = -EPROTO);
1394 result = mdt_lock_root_xattr(info, mdt);
1398 parent = mdt_object_find(info->mti_env, mdt, rr->rr_fid1);
1400 GOTO(out, result = PTR_ERR(parent));
1402 /* get and check version of parent */
1403 result = mdt_version_get_check(info, parent, 0);
1405 mdt_object_put(info->mti_env, parent);
1409 result = mdt_check_enc(info, parent);
1411 GOTO(out_parent, result);
1413 fid_zero(child_fid);
1415 lock_mode = mdt_open_lock_mode(info, parent, &rr->rr_name, open_flags);
1417 OBD_RACE(OBD_FAIL_MDS_REINT_OPEN);
1419 if (lock_mode != LCK_NL) {
1420 lh = &info->mti_lh[MDT_LH_PARENT];
1421 mdt_lock_pdo_init(lh, lock_mode, &rr->rr_name);
1422 result = mdt_object_lock(info, parent, lh, MDS_INODELOCK_UPDATE);
1424 GOTO(out_parent, result);
1426 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1427 &rr->rr_name, child_fid, &info->mti_spec);
1430 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1431 "looking for "DFID"/"DNAME", found FID = "DFID"\n",
1432 PFID(mdt_object_fid(parent)), PNAME(&rr->rr_name),
1435 if (result != 0 && result != -ENOENT)
1436 GOTO(out_parent_unlock, result);
1438 OBD_RACE(OBD_FAIL_MDS_REINT_OPEN2);
1440 if (result == -ENOENT) {
1441 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1442 if (!(open_flags & MDS_OPEN_CREAT))
1443 GOTO(out_parent_unlock, result);
1444 if (mdt_rdonly(req->rq_export))
1445 GOTO(out_parent_unlock, result = -EROFS);
1447 LASSERT(equi(lh == NULL, lock_mode == LCK_NL));
1449 if (lock_mode == LCK_PR) {
1450 /* unlink vs create race: get write lock and restart */
1451 mdt_object_unlock(info, parent, lh, 1);
1452 mdt_clear_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1453 mdt_lock_handle_init(lh);
1458 *child_fid = *info->mti_rr.rr_fid2;
1459 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1461 /* In the function below, .hs_keycmp resolves to
1462 * lu_obj_hop_keycmp() */
1463 /* coverity[overrun-buffer-val] */
1464 child = mdt_object_new(info->mti_env, mdt, child_fid);
1467 * Check for O_EXCL is moved to the mdt_finish_open(),
1468 * we need to return FID back in that case.
1470 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1471 child = mdt_object_find(info->mti_env, mdt, child_fid);
1474 GOTO(out_parent_unlock, result = PTR_ERR(child));
1476 /** check version of child */
1477 rc = mdt_version_get_check(info, child, 1);
1479 GOTO(out_child, result = rc);
1481 tgt_open_obj_set(info->mti_env, mdt_obj2dt(child));
1483 if (result == -ENOENT) {
1484 /* Create under OBF and .lustre is not permitted */
1485 if (!fid_is_md_operative(rr->rr_fid1) &&
1486 (open_flags & MDS_OPEN_VOLATILE) == 0)
1487 GOTO(out_child, result = -EPERM);
1489 /* save versions in reply */
1490 mdt_version_get_save(info, parent, 0);
1491 mdt_version_get_save(info, child, 1);
1493 /* version of child will be changed */
1494 tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(child));
1496 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1497 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1499 /* Don't do lookup sanity check. We know name doesn't exist. */
1500 info->mti_spec.sp_cr_lookup = 0;
1501 info->mti_spec.sp_feat = &dt_directory_features;
1503 result = mdo_create(info->mti_env, mdt_object_child(parent),
1504 &rr->rr_name, mdt_object_child(child),
1505 &info->mti_spec, &info->mti_attr);
1506 if (result == -ERESTART) {
1507 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1508 GOTO(out_child, result);
1510 mdt_prep_ma_buf_from_rep(info, child, ma);
1511 /* XXX: we should call this once, see few lines below */
1513 result = mdt_attr_get_complex(info, child, ma);
1516 GOTO(out_child, result);
1519 mdt_counter_incr(req, LPROC_MDT_MKNOD,
1520 ktime_us_delta(ktime_get(), kstart));
1523 * The object is on remote node, return its FID for remote open.
1525 if (mdt_object_remote(child)) {
1527 * Check if this lock already was sent to client and
1528 * this is resent case. For resent case do not take lock
1529 * again, use what is already granted.
1531 LASSERT(lhc != NULL);
1533 rc = mdt_check_resent_lock(info, child, lhc);
1535 GOTO(out_child, result = rc);
1536 } else if (rc > 0) {
1537 mdt_lock_handle_init(lhc);
1538 mdt_lock_reg_init(lhc, LCK_PR);
1540 rc = mdt_object_lock(info, child, lhc,
1541 MDS_INODELOCK_LOOKUP);
1543 repbody->mbo_fid1 = *mdt_object_fid(child);
1544 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
1548 result = -MDT_EREMOTE_OPEN;
1549 GOTO(out_child, result);
1550 } else if (mdt_object_exists(child)) {
1551 /* Check early for MDS_OPEN_DIRECTORY/O_DIRECTORY to
1552 * avoid opening regular files from lfs getstripe
1553 * since doing so breaks the leases used by lfs
1554 * mirror. See LU-13693. */
1555 if (open_flags & MDS_OPEN_DIRECTORY &&
1556 S_ISREG(lu_object_attr(&child->mot_obj)))
1557 GOTO(out_child, result = -ENOTDIR);
1559 /* We have to get attr & LOV EA & HSM for this
1561 mdt_prep_ma_buf_from_rep(info, child, ma);
1562 ma->ma_need |= MA_HSM;
1563 result = mdt_attr_get_complex(info, child, ma);
1565 GOTO(out_child, result);
1567 /* Object does not exist. Likely FS corruption. */
1568 CERROR("%s: name '"DNAME"' present, but FID "
1569 DFID" is invalid\n", mdt_obd_name(info->mti_mdt),
1570 PNAME(&rr->rr_name), PFID(child_fid));
1571 GOTO(out_child, result = -EIO);
1575 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1576 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1578 rc = mdt_pack_secctx_in_reply(info, child);
1580 GOTO(out_child, result = rc);
1582 rc = mdt_pack_encctx_in_reply(info, child);
1584 GOTO(out_child, result = rc);
1586 rc = mdt_check_resent_lock(info, child, lhc);
1588 GOTO(out_child, result = rc);
1589 } else if (rc == 0) {
1590 /* the open lock might already be gotten in
1591 * ldlm_handle_enqueue() */
1592 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
1593 if (open_flags & MDS_OPEN_LOCK)
1594 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1596 /* get openlock if this isn't replay and client requested it */
1597 if (!req_is_replay(req)) {
1598 rc = mdt_object_open_lock(info, child, lhc, &ibits);
1601 GOTO(out_child_unlock, result = rc);
1602 else if (open_flags & MDS_OPEN_LOCK)
1603 mdt_set_disposition(info, ldlm_rep,
1607 /* Try to open it now. */
1608 rc = mdt_finish_open(info, parent, child, open_flags, ldlm_rep);
1611 /* openlock will be released if mdt_finish_open() failed */
1612 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1614 if (created && (open_flags & MDS_OPEN_VOLATILE)) {
1615 CERROR("%s: cannot open volatile file "DFID", orphan "
1616 "file will be left in PENDING directory until "
1617 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1618 PFID(mdt_object_fid(child)), rc);
1619 GOTO(out_child_unlock, result);
1625 rc = mdo_unlink(info->mti_env,
1626 mdt_object_child(parent),
1627 mdt_object_child(child),
1629 &info->mti_attr, 0);
1631 CERROR("%s: "DFID" cleanup of open: rc = %d\n",
1632 mdt_obd_name(info->mti_mdt),
1633 PFID(mdt_object_fid(child)), rc);
1634 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1638 mdt_counter_incr(req, LPROC_MDT_OPEN,
1639 ktime_us_delta(ktime_get(), kstart));
1644 mdt_object_open_unlock(info, child, lhc, ibits, result);
1646 mdt_object_put(info->mti_env, child);
1648 mdt_pack_size2body(info, child_fid, &lhc->mlh_reg_lh);
1651 mdt_object_unlock(info, parent, lh, result || !created);
1654 mdt_object_put(info->mti_env, parent);
1657 lustre_msg_set_transno(req->rq_repmsg, 0);
1662 * Create an orphan object use local root.
1664 static struct mdt_object *mdt_orphan_open(struct mdt_thread_info *info,
1665 struct mdt_device *mdt,
1666 const struct lu_fid *fid,
1667 struct md_attr *attr, fmode_t fmode)
1669 const struct lu_env *env = info->mti_env;
1670 struct md_op_spec *spec = &info->mti_spec;
1671 struct lu_fid *local_root_fid = &info->mti_tmp_fid1;
1672 struct mdt_object *obj = NULL;
1673 struct mdt_object *local_root;
1674 static const struct lu_name lname = {
1675 .ln_name = "i_am_nobody",
1676 .ln_namelen = sizeof("i_am_nobody") - 1,
1678 struct lu_ucred *uc;
1679 kernel_cap_t uc_cap_save;
1683 rc = dt_root_get(env, mdt->mdt_bottom, local_root_fid);
1685 RETURN(ERR_PTR(rc));
1687 local_root = mdt_object_find(env, mdt, local_root_fid);
1688 if (IS_ERR(local_root))
1691 obj = mdt_object_new(env, mdt, fid);
1693 GOTO(out, rc = PTR_ERR(obj));
1695 spec->sp_cr_lookup = 0;
1696 spec->sp_feat = &dt_directory_features;
1697 spec->sp_cr_flags = MDS_OPEN_VOLATILE | fmode;
1698 if (attr->ma_valid & MA_LOV) {
1699 spec->u.sp_ea.eadata = attr->ma_lmm;
1700 spec->u.sp_ea.eadatalen = attr->ma_lmm_size;
1701 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1703 spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE;
1707 uc_cap_save = uc->uc_cap;
1708 cap_raise(uc->uc_cap, CAP_DAC_OVERRIDE);
1709 rc = mdo_create(env, mdt_object_child(local_root), &lname,
1710 mdt_object_child(obj), spec, attr);
1711 uc->uc_cap = uc_cap_save;
1713 CERROR("%s: cannot create volatile file "DFID": rc = %d\n",
1714 mdt_obd_name(mdt), PFID(fid), rc);
1718 rc = mo_open(env, mdt_object_child(obj), MDS_OPEN_CREATED, spec);
1720 CERROR("%s: cannot open volatile file "DFID", orphan "
1721 "file will be left in PENDING directory until "
1722 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1729 mdt_object_put(env, obj);
1732 mdt_object_put(env, local_root);
1736 /* XXX Look into layout in MDT layer. */
1737 static inline int mdt_hsm_set_released(struct lov_mds_md *lmm)
1739 struct lov_comp_md_v1 *comp_v1;
1740 struct lov_mds_md *v1;
1744 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_COMP_V1_DEFINED)) {
1745 comp_v1 = (struct lov_comp_md_v1 *)lmm;
1747 if (comp_v1->lcm_entry_count == 0)
1750 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
1751 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
1752 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
1753 v1->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
1756 lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
1761 static inline int mdt_get_lmm_gen(struct lov_mds_md *lmm, __u32 *gen)
1763 struct lov_comp_md_v1 *comp_v1;
1765 if (le32_to_cpu(lmm->lmm_magic == LOV_MAGIC_COMP_V1)) {
1766 comp_v1 = (struct lov_comp_md_v1 *)lmm;
1767 *gen = le32_to_cpu(comp_v1->lcm_layout_gen);
1768 } else if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
1769 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3) {
1770 *gen = le16_to_cpu(lmm->lmm_layout_gen);
1777 static int mdt_hsm_release(struct mdt_thread_info *info, struct mdt_object *o,
1780 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LAYOUT];
1781 struct lu_ucred *uc = mdt_ucred(info);
1782 struct close_data *data;
1783 struct ldlm_lock *lease;
1784 struct mdt_object *orphan;
1785 struct md_attr *orp_ma;
1793 if (mdt_rdonly(info->mti_exp))
1796 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
1800 lease = ldlm_handle2lock(&data->cd_handle);
1804 /* try to hold open_sem so that nobody else can open the file */
1805 if (!down_write_trylock(&o->mot_open_sem)) {
1806 ldlm_lock_cancel(lease);
1807 GOTO(out_reprocess, rc = -EBUSY);
1810 /* Check if the lease open lease has already canceled */
1811 lock_res_and_lock(lease);
1812 lease_broken = ldlm_is_cancel(lease);
1813 unlock_res_and_lock(lease);
1815 LDLM_DEBUG(lease, DFID " lease broken? %d",
1816 PFID(mdt_object_fid(o)), lease_broken);
1818 /* Cancel server side lease. Client side counterpart should
1819 * have been cancelled. It's okay to cancel it now as we've
1820 * held mot_open_sem. */
1821 ldlm_lock_cancel(lease);
1823 if (lease_broken) /* don't perform release task */
1824 GOTO(out_unlock, rc = -ESTALE);
1826 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
1827 GOTO(out_unlock, rc = -EINVAL);
1829 /* ma_need was set before but it seems fine to change it in order to
1830 * avoid modifying the one from RPC */
1831 ma->ma_need = MA_HSM;
1832 rc = mdt_attr_get_complex(info, o, ma);
1834 GOTO(out_unlock, rc);
1836 if (ma->ma_attr_flags & MDS_PCC_ATTACH) {
1837 if (ma->ma_valid & MA_HSM) {
1838 if (ma->ma_hsm.mh_flags & HS_RELEASED)
1839 GOTO(out_unlock, rc = -EALREADY);
1841 if (ma->ma_hsm.mh_arch_id != data->cd_archive_id)
1843 DFID" archive id diff: %llu:%u\n",
1844 PFID(mdt_object_fid(o)),
1845 ma->ma_hsm.mh_arch_id,
1846 data->cd_archive_id);
1848 if (!(ma->ma_hsm.mh_flags & HS_DIRTY) &&
1849 ma->ma_hsm.mh_arch_ver == data->cd_data_version) {
1851 DFID" data version matches: packed=%llu "
1852 "and on-disk=%llu\n",
1853 PFID(mdt_object_fid(o)),
1854 data->cd_data_version,
1855 ma->ma_hsm.mh_arch_ver);
1856 ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
1859 if (ma->ma_hsm.mh_flags & HS_DIRTY)
1860 ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
1862 /* Set up HSM attribte for PCC archived object */
1863 BUILD_BUG_ON(sizeof(struct hsm_attrs) >
1864 sizeof(info->mti_xattr_buf));
1865 buf = &info->mti_buf;
1866 buf->lb_buf = info->mti_xattr_buf;
1867 buf->lb_len = sizeof(struct hsm_attrs);
1868 memset(&ma->ma_hsm, 0, sizeof(ma->ma_hsm));
1869 ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
1870 ma->ma_hsm.mh_arch_id = data->cd_archive_id;
1871 ma->ma_hsm.mh_arch_ver = data->cd_data_version;
1872 lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
1874 rc = mo_xattr_set(info->mti_env, mdt_object_child(o),
1875 buf, XATTR_NAME_HSM, 0);
1877 GOTO(out_unlock, rc);
1880 if (!mdt_hsm_release_allow(ma))
1881 GOTO(out_unlock, rc = -EPERM);
1883 /* already released? */
1884 if (ma->ma_hsm.mh_flags & HS_RELEASED)
1885 GOTO(out_unlock, rc = 0);
1887 /* Compare on-disk and packed data_version */
1888 if (data->cd_data_version != ma->ma_hsm.mh_arch_ver) {
1889 CDEBUG(D_HSM, DFID" data_version mismatches: "
1890 "packed=%llu and on-disk=%llu\n",
1891 PFID(mdt_object_fid(o)),
1892 data->cd_data_version,
1893 ma->ma_hsm.mh_arch_ver);
1894 GOTO(out_unlock, rc = -EPERM);
1898 ma->ma_valid = MA_INODE;
1899 ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME | LA_SIZE;
1900 rc = mo_attr_set(info->mti_env, mdt_object_child(o), ma);
1902 GOTO(out_unlock, rc);
1904 mutex_lock(&o->mot_som_mutex);
1905 rc2 = mdt_set_som(info, o, SOM_FL_STRICT, ma->ma_attr.la_size,
1906 ma->ma_attr.la_blocks);
1907 mutex_unlock(&o->mot_som_mutex);
1910 "%s: File "DFID" SOM update failed: rc = %d\n",
1911 mdt_obd_name(info->mti_mdt),
1912 PFID(mdt_object_fid(o)), rc2);
1915 ma->ma_need = MA_INODE | MA_LOV;
1916 rc = mdt_attr_get_complex(info, o, ma);
1918 GOTO(out_unlock, rc);
1920 if (!(ma->ma_valid & MA_LOV)) {
1921 /* Even empty file are released */
1922 memset(ma->ma_lmm, 0, sizeof(*ma->ma_lmm));
1923 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEFINED);
1924 ma->ma_lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
1925 ma->ma_lmm->lmm_stripe_size = cpu_to_le32(LOV_MIN_STRIPE_SIZE);
1926 ma->ma_lmm_size = sizeof(*ma->ma_lmm);
1928 /* Magic must be LOV_MAGIC_*_DEFINED or LOD will interpret
1929 * ma_lmm as lov_user_md, then it will be confused by union of
1930 * layout_gen and stripe_offset. */
1931 if ((le32_to_cpu(ma->ma_lmm->lmm_magic) & LOV_MAGIC_MASK) ==
1933 ma->ma_lmm->lmm_magic |= cpu_to_le32(LOV_MAGIC_DEFINED);
1935 GOTO(out_unlock, rc = -EINVAL);
1938 /* Set file as released. */
1939 rc = mdt_hsm_set_released(ma->ma_lmm);
1941 GOTO(out_unlock, rc);
1943 orp_ma = &info->mti_u.hsm.attr;
1944 orp_ma->ma_attr.la_mode = S_IFREG | S_IWUSR;
1945 /* We use root ownership to bypass potential quota
1946 * restrictions on the user and group of the file. */
1947 orp_ma->ma_attr.la_uid = 0;
1948 orp_ma->ma_attr.la_gid = 0;
1949 orp_ma->ma_attr.la_valid = LA_MODE | LA_UID | LA_GID;
1950 orp_ma->ma_lmm = ma->ma_lmm;
1951 orp_ma->ma_lmm_size = ma->ma_lmm_size;
1952 orp_ma->ma_valid = MA_INODE | MA_LOV;
1953 orphan = mdt_orphan_open(info, info->mti_mdt, &data->cd_fid, orp_ma,
1955 if (IS_ERR(orphan)) {
1956 CERROR("%s: cannot open orphan file "DFID": rc = %ld\n",
1957 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid),
1959 GOTO(out_unlock, rc = PTR_ERR(orphan));
1962 /* Set up HSM attribute for orphan object */
1963 BUILD_BUG_ON(sizeof(struct hsm_attrs) > sizeof(info->mti_xattr_buf));
1964 buf = &info->mti_buf;
1965 buf->lb_buf = info->mti_xattr_buf;
1966 buf->lb_len = sizeof(struct hsm_attrs);
1967 ma->ma_hsm.mh_flags |= HS_RELEASED;
1968 lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
1969 ma->ma_hsm.mh_flags &= ~HS_RELEASED;
1971 mdt_lock_reg_init(lh, LCK_EX);
1972 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_LAYOUT |
1973 MDS_INODELOCK_XATTR);
1975 GOTO(out_close, rc);
1977 /* The orphan has root ownership so we need to raise
1978 * CAP_FOWNER to set the HSM attributes. */
1980 cap_raise(uc->uc_cap, CAP_FOWNER);
1981 rc = mo_xattr_set(info->mti_env, mdt_object_child(orphan), buf,
1985 GOTO(out_layout_lock, rc);
1987 /* Swap layout with orphan objects. */
1988 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o),
1989 mdt_object_child(orphan),
1990 SWAP_LAYOUTS_MDS_HSM);
1992 if (!rc && ma->ma_attr_flags & MDS_PCC_ATTACH) {
1993 ma->ma_need = MA_LOV;
1994 rc = mdt_attr_get_complex(info, o, ma);
2000 /* Release exclusive LL */
2001 mdt_object_unlock(info, o, lh, 1);
2003 /* Close orphan object anyway */
2004 rc2 = mo_close(info->mti_env, mdt_object_child(orphan), orp_ma,
2007 CERROR("%s: error closing volatile file "DFID": rc = %d\n",
2008 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid), rc2);
2009 LU_OBJECT_DEBUG(D_HSM, info->mti_env, &orphan->mot_obj,
2011 mdt_object_put(info->mti_env, orphan);
2014 up_write(&o->mot_open_sem);
2016 /* already released */
2018 struct mdt_body *repbody;
2020 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2021 LASSERT(repbody != NULL);
2022 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2023 if (ma->ma_attr_flags & MDS_PCC_ATTACH) {
2024 LASSERT(ma->ma_valid & MA_LOV);
2025 rc = mdt_get_lmm_gen(ma->ma_lmm,
2026 &repbody->mbo_layout_gen);
2028 repbody->mbo_valid |= OBD_MD_LAYOUT_VERSION;
2033 ldlm_reprocess_all(lease->l_resource,
2034 lease->l_policy_data.l_inodebits.bits);
2035 LDLM_LOCK_PUT(lease);
2043 int mdt_close_handle_layouts(struct mdt_thread_info *info,
2044 struct mdt_object *o, struct md_attr *ma)
2046 struct mdt_lock_handle *lh1 = &info->mti_lh[MDT_LH_NEW];
2047 struct mdt_lock_handle *lh2 = &info->mti_lh[MDT_LH_OLD];
2048 struct close_data *data;
2049 struct ldlm_lock *lease;
2050 struct mdt_object *o1 = o, *o2 = NULL;
2052 bool swap_objects = false;
2056 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
2059 if (!S_ISREG(lu_object_attr(&o1->mot_obj)))
2062 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
2066 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
2069 rc = lu_fid_cmp(&data->cd_fid, mdt_object_fid(o));
2072 * only MDS_CLOSE_LAYOUT_SPLIT use the same fid to indicate
2073 * mirror deletion, so we'd zero cd_fid, and keeps o2 be NULL.
2075 if (!(ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT))
2078 /* zero cd_fid to keeps o2 be NULL */
2079 fid_zero(&data->cd_fid);
2080 } else if (rc < 0) {
2081 /* Exchange o1 and o2, to enforce locking order */
2082 swap_objects = true;
2085 lease = ldlm_handle2lock(&data->cd_handle);
2089 if (!fid_is_zero(&data->cd_fid)) {
2090 o2 = mdt_object_find(info->mti_env, info->mti_mdt,
2093 GOTO(out_lease, rc = PTR_ERR(o2));
2095 if (!mdt_object_exists(o2))
2096 GOTO(out_obj, rc = -ENOENT);
2098 if (!S_ISREG(lu_object_attr(&o2->mot_obj)))
2099 GOTO(out_obj, rc = -EINVAL);
2105 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
2111 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2),
2117 /* try to hold open_sem so that nobody else can open the file */
2118 if (!down_write_trylock(&o->mot_open_sem)) {
2119 ldlm_lock_cancel(lease);
2120 GOTO(out_obj, rc = -EBUSY);
2123 /* Check if the lease open lease has already canceled */
2124 lock_res_and_lock(lease);
2125 lease_broken = ldlm_is_cancel(lease);
2126 unlock_res_and_lock(lease);
2128 LDLM_DEBUG(lease, DFID " lease broken? %d",
2129 PFID(mdt_object_fid(o)), lease_broken);
2131 /* Cancel server side lease. Client side counterpart should
2132 * have been cancelled. It's okay to cancel it now as we've
2133 * held mot_open_sem. */
2134 ldlm_lock_cancel(lease);
2137 GOTO(out_unlock_sem, rc = -ESTALE);
2139 mdt_lock_reg_init(lh1, LCK_EX);
2140 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
2141 MDS_INODELOCK_XATTR);
2143 GOTO(out_unlock_sem, rc);
2146 mdt_lock_reg_init(lh2, LCK_EX);
2147 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
2148 MDS_INODELOCK_XATTR);
2150 GOTO(out_unlock1, rc);
2153 /* Swap layout with orphan object */
2154 if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SWAP) {
2155 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
2156 mdt_object_child(o2), 0);
2157 } else if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_MERGE ||
2158 ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT) {
2159 struct lu_buf *buf = &info->mti_buf;
2160 struct md_rejig_data mrd;
2163 mrd.mrd_obj = mdt_object_child(o == o1 ? o2 : o1);
2165 if (!(ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT)) {
2166 /* paranoid check again */
2168 ":only mirror split support NULL o2 object\n",
2169 PFID(mdt_object_fid(o)));
2170 GOTO(out_unlock1, rc = -EINVAL);
2173 /* set NULL mrd_obj for deleting mirror objects */
2177 if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT) {
2178 mrd.mrd_mirror_id = data->cd_mirror_id;
2179 /* set a small enough blocks in the SoM */
2180 ma->ma_attr.la_blocks >>= 1;
2183 buf->lb_len = sizeof(mrd);
2185 rc = mo_xattr_set(info->mti_env, mdt_object_child(o), buf,
2187 ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT ?
2188 LU_XATTR_SPLIT : LU_XATTR_MERGE);
2189 if (rc == 0 && ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS |
2190 LA_LSIZE | LA_LBLOCKS)) {
2192 enum lustre_som_flags lsf;
2194 if (ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS))
2195 lsf = SOM_FL_STRICT;
2199 mutex_lock(&o->mot_som_mutex);
2200 rc2 = mdt_set_som(info, o, lsf,
2201 ma->ma_attr.la_size,
2202 ma->ma_attr.la_blocks);
2203 mutex_unlock(&o->mot_som_mutex);
2205 CERROR(DFID": Setting i_blocks error: %d, "
2206 "i_blocks will be reported wrongly and "
2207 "can only be fixed in next resync\n",
2208 PFID(mdt_object_fid(o)), rc2);
2212 GOTO(out_unlock2, rc);
2217 /* Release exclusive LL */
2219 mdt_object_unlock(info, o2, lh2, 1);
2222 mdt_object_unlock(info, o1, lh1, 1);
2225 up_write(&o->mot_open_sem);
2227 /* already swapped */
2229 struct mdt_body *repbody;
2231 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2232 LASSERT(repbody != NULL);
2233 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2238 /* the 2nd object has been used, and swapped to o1 */
2239 mdt_object_put(info->mti_env, o1);
2241 /* the 2nd object has been used, and not swapped */
2242 mdt_object_put(info->mti_env, o2);
2244 ldlm_reprocess_all(lease->l_resource,
2245 lease->l_policy_data.l_inodebits.bits);
2248 LDLM_LOCK_PUT(lease);
2258 static int mdt_close_resync_done(struct mdt_thread_info *info,
2259 struct mdt_object *o, struct md_attr *ma)
2261 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LOCAL];
2262 struct close_data *data;
2263 struct ldlm_lock *lease;
2264 struct md_layout_change layout = { 0 };
2265 __u32 *resync_ids = NULL;
2266 size_t resync_count = 0;
2272 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
2275 if (!S_ISREG(lu_object_attr(&o->mot_obj)))
2278 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
2282 if (req_capsule_req_need_swab(info->mti_pill))
2283 lustre_swab_close_data_resync_done(&data->cd_resync);
2285 if (!fid_is_zero(&data->cd_fid))
2288 lease = ldlm_handle2lock(&data->cd_handle);
2292 /* try to hold open_sem so that nobody else can open the file */
2293 if (!down_write_trylock(&o->mot_open_sem)) {
2294 ldlm_lock_cancel(lease);
2295 GOTO(out_reprocess, rc = -EBUSY);
2298 /* Check if the lease open lease has already canceled */
2299 lock_res_and_lock(lease);
2300 lease_broken = ldlm_is_cancel(lease);
2301 unlock_res_and_lock(lease);
2303 LDLM_DEBUG(lease, DFID " lease broken? %d\n",
2304 PFID(mdt_object_fid(o)), lease_broken);
2306 /* Cancel server side lease. Client side counterpart should
2307 * have been cancelled. It's okay to cancel it now as we've
2308 * held mot_open_sem. */
2309 ldlm_lock_cancel(lease);
2311 if (lease_broken) /* don't perform release task */
2312 GOTO(out_unlock, rc = -ESTALE);
2314 resync_count = data->cd_resync.resync_count;
2316 if (resync_count > INLINE_RESYNC_ARRAY_SIZE) {
2319 if (!req_capsule_has_field(info->mti_pill, &RMF_U32,
2321 GOTO(out_unlock, rc = -EPROTO);
2323 OBD_ALLOC_PTR_ARRAY(resync_ids, resync_count);
2325 GOTO(out_unlock, rc = -ENOMEM);
2327 data = req_capsule_client_get(info->mti_pill, &RMF_U32);
2328 memcpy(resync_ids, data, resync_count * sizeof(__u32));
2330 layout.mlc_resync_ids = resync_ids;
2332 layout.mlc_resync_ids = data->cd_resync.resync_ids_inline;
2335 layout.mlc_opc = MD_LAYOUT_RESYNC_DONE;
2336 layout.mlc_resync_count = resync_count;
2337 if (ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS)) {
2338 layout.mlc_som.lsa_valid = SOM_FL_STRICT;
2339 layout.mlc_som.lsa_size = ma->ma_attr.la_size;
2340 layout.mlc_som.lsa_blocks = ma->ma_attr.la_blocks;
2342 rc = mdt_layout_change(info, o, lhc, &layout);
2344 GOTO(out_unlock, rc);
2346 mdt_object_unlock(info, o, lhc, 0);
2351 up_write(&o->mot_open_sem);
2353 /* already released */
2355 struct mdt_body *repbody;
2357 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2358 LASSERT(repbody != NULL);
2359 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2363 OBD_FREE_PTR_ARRAY(resync_ids, resync_count);
2366 ldlm_reprocess_all(lease->l_resource,
2367 lease->l_policy_data.l_inodebits.bits);
2368 LDLM_LOCK_PUT(lease);
2376 #define MFD_CLOSED(open_flags) ((open_flags) == MDS_FMODE_CLOSED)
2378 static int mdt_mfd_closed(struct mdt_file_data *mfd)
2380 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_open_flags));
2383 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
2385 struct mdt_object *o = mfd->mfd_object;
2386 struct md_object *next = mdt_object_child(o);
2387 struct md_attr *ma = &info->mti_attr;
2388 struct lu_fid *ofid = &info->mti_tmp_fid1;
2396 open_flags = mfd->mfd_open_flags;
2397 intent = ma->ma_attr_flags & MDS_CLOSE_INTENT;
2398 *ofid = *mdt_object_fid(o);
2400 /* the below message is checked in replay-single.sh test_46 */
2401 CDEBUG(D_INODE, "%s: %sclosing file handle "DFID" with intent: %llx\n",
2402 mdt_obd_name(info->mti_mdt),
2403 ma->ma_valid & MA_FORCE_LOG ? "force " : "", PFID(ofid), intent);
2406 case MDS_HSM_RELEASE: {
2407 rc = mdt_hsm_release(info, o, ma);
2409 CDEBUG(D_HSM, "%s: File " DFID " release failed: %d\n",
2410 mdt_obd_name(info->mti_mdt),
2412 /* continue to close even error occurred. */
2416 case MDS_CLOSE_LAYOUT_MERGE:
2417 case MDS_CLOSE_LAYOUT_SPLIT:
2418 case MDS_CLOSE_LAYOUT_SWAP: {
2419 rc = mdt_close_handle_layouts(info, o, ma);
2422 "%s: cannot %s layout of "DFID": rc = %d\n",
2423 mdt_obd_name(info->mti_mdt),
2424 intent == MDS_CLOSE_LAYOUT_MERGE ? "merge" :
2425 intent == MDS_CLOSE_LAYOUT_SPLIT ? "split" :
2428 /* continue to close even if error occurred. */
2432 case MDS_CLOSE_RESYNC_DONE:
2433 rc = mdt_close_resync_done(info, o, ma);
2436 "%s: cannot resync layout of "DFID": rc = %d\n",
2437 mdt_obd_name(info->mti_mdt),
2439 /* continue to close even if error occurred. */
2447 if (S_ISREG(lu_object_attr(&o->mot_obj)) &&
2448 ma->ma_attr.la_valid & (LA_LSIZE | LA_LBLOCKS)) {
2449 rc2 = mdt_lsom_update(info, o, false);
2452 "%s: File " DFID " LSOM failed: rc = %d\n",
2453 mdt_obd_name(info->mti_mdt),
2457 /* continue to close even if error occurred. */
2461 if (open_flags & MDS_FMODE_WRITE)
2463 else if (open_flags & MDS_FMODE_EXEC)
2466 /* Update atime|mtime|ctime on close. */
2467 if ((open_flags & MDS_FMODE_EXEC || open_flags & MDS_FMODE_READ ||
2468 open_flags & MDS_FMODE_WRITE) && (ma->ma_valid & MA_INODE) &&
2469 (ma->ma_attr.la_valid & LA_ATIME ||
2470 ma->ma_attr.la_valid & LA_MTIME ||
2471 ma->ma_attr.la_valid & LA_CTIME)) {
2472 ma->ma_valid = MA_INODE;
2473 ma->ma_attr_flags |= MDS_CLOSE_UPDATE_TIMES;
2474 ma->ma_attr.la_valid &= (LA_ATIME | LA_MTIME | LA_CTIME);
2476 if (ma->ma_attr.la_valid & LA_MTIME) {
2477 if (mdt_attr_get_pfid(info, o, &ma->ma_pfid) == 0)
2478 ma->ma_valid |= MA_PFID;
2481 rc2 = mo_attr_set(info->mti_env, next, ma);
2484 "%s: File "DFID" set attr (%#llx) failed: rc = %d\n",
2485 mdt_obd_name(info->mti_mdt), PFID(ofid),
2486 ma->ma_attr.la_valid, rc2);
2492 /* If file data is modified, add the dirty flag. */
2493 if (ma->ma_attr_flags & MDS_DATA_MODIFIED) {
2494 rc2 = mdt_add_dirty_flag(info, o, ma);
2497 "%s: File "DFID" add dirty flag failed: rc = %d\n",
2498 mdt_obd_name(info->mti_mdt), PFID(ofid), rc2);
2504 ma->ma_need |= MA_INODE;
2505 ma->ma_valid &= ~MA_INODE;
2507 LASSERT(atomic_read(&o->mot_open_count) > 0);
2508 atomic_dec(&o->mot_open_count);
2509 mdt_handle_last_unlink(info, o, ma);
2511 if (!MFD_CLOSED(open_flags)) {
2512 rc2 = mo_close(info->mti_env, next, ma, open_flags);
2515 "%s: File "DFID" close failed: rc = %d\n",
2516 mdt_obd_name(info->mti_mdt), PFID(ofid), rc2);
2520 if (mdt_dom_check_for_discard(info, o))
2521 mdt_dom_discard_data(info, o);
2524 /* adjust open and lease count */
2525 if (open_flags & MDS_OPEN_LEASE) {
2526 LASSERT(atomic_read(&o->mot_lease_count) > 0);
2527 atomic_dec(&o->mot_lease_count);
2531 mdt_object_put(info->mti_env, o);
2536 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
2537 struct mdt_body *repbody)
2539 struct mdt_export_data *med;
2540 struct mdt_file_data *mfd;
2545 med = &req->rq_export->exp_mdt_data;
2546 spin_lock(&med->med_open_lock);
2547 mfd = mdt_open_handle2mfd(med, &info->mti_open_handle,
2548 req_is_replay(req));
2549 if (mdt_mfd_closed(mfd)) {
2550 spin_unlock(&med->med_open_lock);
2551 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
2552 ": cookie = %#llx\n", PFID(info->mti_rr.rr_fid1),
2553 info->mti_open_handle.cookie);
2554 /** not serious error since bug 3633 */
2557 class_handle_unhash(&mfd->mfd_open_handle);
2558 list_del_init(&mfd->mfd_list);
2559 spin_unlock(&med->med_open_lock);
2560 ret = mdt_mfd_close(info, mfd);
2563 RETURN(rc ? rc : ret);
2566 int mdt_close(struct tgt_session_info *tsi)
2568 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2569 struct ptlrpc_request *req = tgt_ses_req(tsi);
2570 struct md_attr *ma = &info->mti_attr;
2571 struct mdt_body *repbody = NULL;
2572 ktime_t kstart = ktime_get();
2578 /* Close may come with the Size-on-MDS update. Unpack it. */
2579 rc = mdt_close_unpack(info);
2581 GOTO(out, rc = err_serious(rc));
2583 /* These fields are no longer used and are left for compatibility.
2584 * size is always zero */
2585 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
2587 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
2589 rc = req_capsule_server_pack(info->mti_pill);
2590 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2591 mdt_client_compatibility(info);
2593 mdt_fix_reply(info);
2594 mdt_exit_ucred(info);
2595 GOTO(out, rc = lustre_msg_get_status(req->rq_repmsg));
2598 /* Continue to close handle even if we can not pack reply */
2600 repbody = req_capsule_server_get(info->mti_pill,
2602 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
2604 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
2607 ma->ma_need = MA_INODE | MA_LOV;
2608 repbody->mbo_eadatasize = 0;
2609 repbody->mbo_aclsize = 0;
2611 rc = err_serious(rc);
2614 rc2 = mdt_close_internal(info, req, repbody);
2616 mdt_empty_transno(info, rc2);
2617 if (rc2 != 0 && rc == 0)
2620 if (repbody != NULL) {
2621 mdt_client_compatibility(info);
2622 rc2 = mdt_fix_reply(info);
2623 if (rc2 != 0 && rc == 0)
2627 mdt_exit_ucred(info);
2628 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
2629 GOTO(out, rc = err_serious(-ENOMEM));
2631 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
2632 OBD_FAIL_MDS_CLOSE_NET_REP))
2633 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
2635 mdt_thread_info_fini(info);
2637 mdt_counter_incr(req, LPROC_MDT_CLOSE,
2638 ktime_us_delta(ktime_get(), kstart));