1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdt/mdt_open.c
38 * Lustre Metadata Target (mdt) open/close file handling
40 * Author: Huang Hua <huanghua@clusterfs.com>
44 # define EXPORT_SYMTAB
46 #define DEBUG_SUBSYSTEM S_MDS
48 #include <lustre_acl.h>
49 #include <lustre_mds.h>
50 #include "mdt_internal.h"
52 /* we do nothing because we do not have refcount now */
53 static void mdt_mfd_get(void *mfdp)
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(void)
61 struct mdt_file_data *mfd;
66 CFS_INIT_LIST_HEAD(&mfd->mfd_handle.h_link);
67 CFS_INIT_LIST_HEAD(&mfd->mfd_list);
68 class_handle_hash(&mfd->mfd_handle, mdt_mfd_get);
74 * Find the mfd pointed to by handle in global hash table.
75 * In case of replay the handle is obsoleted
76 * but mfd can be found in mfd list by that handle
78 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *info,
79 const struct lustre_handle *handle)
81 struct ptlrpc_request *req = mdt_info_req(info);
82 struct mdt_file_data *mfd;
85 LASSERT(handle != NULL);
86 mfd = class_handle2object(handle->cookie);
87 /* during dw/setattr replay the mfd can be found by old handle */
88 if (mfd == NULL && req_is_replay(req)) {
89 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
90 cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
91 if (mfd->mfd_old_handle.cookie == handle->cookie)
100 void mdt_mfd_free(struct mdt_file_data *mfd)
102 LASSERT(cfs_list_empty(&mfd->mfd_list));
103 OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle);
106 static int mdt_create_data(struct mdt_thread_info *info,
107 struct mdt_object *p, struct mdt_object *o)
109 struct md_op_spec *spec = &info->mti_spec;
110 struct md_attr *ma = &info->mti_attr;
114 if (!md_should_create(spec->sp_cr_flags))
117 ma->ma_need = MA_INODE | MA_LOV;
119 rc = mdo_create_data(info->mti_env,
120 p ? mdt_object_child(p) : NULL,
121 mdt_object_child(o), spec, ma);
125 static int mdt_ioepoch_opened(struct mdt_object *mo)
127 return mo->mot_ioepoch_count;
130 int mdt_object_is_som_enabled(struct mdt_object *mo)
132 return !mo->mot_ioepoch;
136 * Re-enable Size-on-MDS.
137 * Call under ->mot_ioepoch_sem.
139 static void mdt_object_som_enable(struct mdt_object *mo, __u64 ioepoch)
141 if (ioepoch == mo->mot_ioepoch) {
142 LASSERT(!mdt_ioepoch_opened(mo));
149 * Open the IOEpoch. It is allowed if @writecount is not negative.
150 * The epoch and writecount handling is performed under the mot_ioepoch_sem.
152 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
155 struct mdt_device *mdt = info->mti_mdt;
160 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
161 !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
164 cfs_down(&o->mot_ioepoch_sem);
165 if (mdt_ioepoch_opened(o)) {
166 /* Epoch continues even if there is no writers yet. */
167 CDEBUG(D_INODE, "continue epoch "LPU64" for "DFID"\n",
168 o->mot_ioepoch, PFID(mdt_object_fid(o)));
170 /* XXX: ->mdt_ioepoch is not initialized at the mount */
171 cfs_spin_lock(&mdt->mdt_ioepoch_lock);
172 if (mdt->mdt_ioepoch < info->mti_replayepoch)
173 mdt->mdt_ioepoch = info->mti_replayepoch;
175 if (info->mti_replayepoch)
176 o->mot_ioepoch = info->mti_replayepoch;
177 else if (++mdt->mdt_ioepoch == IOEPOCH_INVAL)
178 o->mot_ioepoch = ++mdt->mdt_ioepoch;
180 o->mot_ioepoch = mdt->mdt_ioepoch;
182 cfs_spin_unlock(&mdt->mdt_ioepoch_lock);
184 CDEBUG(D_INODE, "starting epoch "LPU64" for "DFID"\n",
185 o->mot_ioepoch, PFID(mdt_object_fid(o)));
187 o->mot_flags |= MOF_SOM_CREATED;
190 o->mot_ioepoch_count++;
191 cfs_up(&o->mot_ioepoch_sem);
193 /* Cancel Size-on-MDS attributes cached on clients for the open case.
194 * In the truncate case, see mdt_reint_setattr(). */
195 if (cancel && (info->mti_rr.rr_fid1 != NULL)) {
196 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_CHILD];
197 mdt_lock_reg_init(lh, LCK_EX);
198 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_UPDATE,
201 mdt_object_unlock(info, o, lh, 1);
207 * Update SOM on-disk attributes.
208 * If enabling, write update inodes and lustre-ea with the proper IOEpoch,
209 * mountid and attributes. If disabling, zero IOEpoch id in lustre-ea.
210 * Call under ->mot_ioepoch_sem.
212 static int mdt_som_attr_set(struct mdt_thread_info *info,
213 struct mdt_object *obj, __u64 ioepoch, int enable)
215 struct md_attr *ma = &info->mti_attr;
219 CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64
220 " on "DFID".\n", enable ? "update" : "disabling",
221 ioepoch, PFID(mdt_object_fid(obj)));
223 ma->ma_valid |= MA_SOM;
224 ma->ma_som = &info->mti_u.som.data;
226 struct mdt_device *mdt = info->mti_mdt;
227 struct lu_attr *la = &ma->ma_attr;
229 ma->ma_som->msd_ioepoch = ioepoch;
230 ma->ma_som->msd_size = la->la_valid & LA_SIZE ? la->la_size : 0;
231 ma->ma_som->msd_blocks = la->la_valid & LA_BLOCKS ?
233 ma->ma_som->msd_mountid = mdt->mdt_lut.lut_mount_count;
234 ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME;
236 ma->ma_som->msd_ioepoch = IOEPOCH_INVAL;
237 ma->ma_attr.la_valid &= LA_ATIME;
240 /* Since we have opened the file, it is unnecessary
241 * to check permission when close it. Between the "open"
242 * and "close", maybe someone has changed the file mode
243 * or flags, or the file created mode do not permit wirte,
244 * and so on. Just set MDS_PERM_BYPASS for all the cases. */
245 ma->ma_attr_flags |= MDS_PERM_BYPASS | MDS_SOM;
247 rc = mdt_attr_set(info, obj, ma, 0);
251 /** Perform the eviction specific actions on ioepoch close. */
252 static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info,
253 struct mdt_object *o)
257 cfs_down(&o->mot_ioepoch_sem);
258 CDEBUG(D_INODE, "Eviction. Closing IOepoch "LPU64" on "DFID". "
259 "Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)),
260 o->mot_ioepoch_count);
261 o->mot_ioepoch_count--;
263 /* If eviction occured set MOF_SOM_RECOV,
264 * if no other epoch holders, disable SOM on disk. */
265 o->mot_flags |= MOF_SOM_CHANGE | MOF_SOM_RECOV;
266 if (!mdt_ioepoch_opened(o)) {
267 rc = mdt_som_attr_set(info, o, o->mot_ioepoch, MDT_SOM_DISABLE);
268 mdt_object_som_enable(o, o->mot_ioepoch);
270 cfs_up(&o->mot_ioepoch_sem);
275 * Perform the replay specific actions on ioepoch close.
276 * Skip SOM attribute update if obtained and just forget about the inode state
277 * for the last ioepoch holder. The SOM cache is invalidated on MDS failure.
279 static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info,
280 struct mdt_object *o)
282 int rc = MDT_IOEPOCH_CLOSED;
285 cfs_down(&o->mot_ioepoch_sem);
286 CDEBUG(D_INODE, "Replay. Closing epoch "LPU64" on "DFID". Count %d\n",
287 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
288 o->mot_ioepoch_count--;
290 /* Get an info from the replayed request if client is supposed
291 * to send an Attibute Update, reconstruct @rc if so */
292 if (info->mti_ioepoch->flags & MF_SOM_AU)
293 rc = MDT_IOEPOCH_GETATTR;
295 if (!mdt_ioepoch_opened(o))
296 mdt_object_som_enable(o, info->mti_ioepoch->ioepoch);
297 cfs_up(&o->mot_ioepoch_sem);
303 * Regular file IOepoch close.
304 * Closes the ioepoch, checks the object state, apply obtained attributes and
305 * re-enable SOM on the object, if possible. Also checks if the recovery is
306 * needed and packs OBD_MD_FLGETATTRLOCK flag into the reply to force the client
307 * to obtain SOM attributes under the server-side OST locks.
310 * MDT_IOEPOCH_CLOSED if ioepoch is closed.
311 * MDT_IOEPOCH_GETATTR if ioepoch is closed but another SOM update is needed.
313 static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info,
314 struct mdt_object *o)
316 struct md_attr *tmp_ma;
320 int rc = 0, ret = MDT_IOEPOCH_CLOSED;
323 la = &info->mti_attr.ma_attr;
324 achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE);
326 cfs_down(&o->mot_ioepoch_sem);
327 o->mot_ioepoch_count--;
329 tmp_ma = &info->mti_u.som.attr;
330 tmp_ma->ma_lmm = info->mti_attr.ma_lmm;
331 tmp_ma->ma_lmm_size = info->mti_attr.ma_lmm_size;
332 tmp_ma->ma_som = &info->mti_u.som.data;
333 tmp_ma->ma_need = MA_INODE | MA_LOV | MA_SOM;
334 tmp_ma->ma_valid = 0;
335 rc = mo_attr_get(info->mti_env, mdt_object_child(o), tmp_ma);
339 /* Check the on-disk SOM state. */
340 if (o->mot_flags & MOF_SOM_RECOV)
342 else if (!(o->mot_flags & MOF_SOM_CREATED) &&
343 !(tmp_ma->ma_valid & MA_SOM))
346 CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
347 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
349 opened = mdt_ioepoch_opened(o);
351 * If IOEpoch is not opened, check if a Size-on-MDS update is needed.
352 * Skip the check for file with no LOV or for unlink files.
354 if (!opened && tmp_ma->ma_valid & MA_LOV &&
355 !(tmp_ma->ma_valid & MA_INODE && tmp_ma->ma_attr.la_nlink == 0)) {
357 /* If some previous writer was evicted, re-ask the
358 * client for attributes. Even if attributes are
359 * provided, we cannot believe in them.
360 * Another use case is that there is no SOM cache on
361 * disk -- first access with SOM or there was an MDS
363 ret = MDT_IOEPOCH_GETATTR;
364 else if (o->mot_flags & MOF_SOM_CHANGE)
365 /* Some previous writer changed the attribute.
366 * Do not believe to the current Size-on-MDS
367 * update, re-ask client. */
368 ret = MDT_IOEPOCH_GETATTR;
369 else if (!(la->la_valid & LA_SIZE) && achange)
370 /* Attributes were changed by the last writer
371 * only but no Size-on-MDS update is received.*/
372 ret = MDT_IOEPOCH_GETATTR;
375 if (achange || ret == MDT_IOEPOCH_GETATTR)
376 o->mot_flags |= MOF_SOM_CHANGE;
378 /* If epoch ends and relable SOM attributes are obtained, update them.
379 * Create SOM ea for new files even if there is no attributes obtained
380 * (0-length file). */
381 if (ret == MDT_IOEPOCH_CLOSED && !opened) {
382 if (achange || o->mot_flags & MOF_SOM_CREATED) {
383 LASSERT(achange || !(la->la_valid & LA_SIZE));
384 rc = mdt_som_attr_set(info, o, o->mot_ioepoch,
386 /* Avoid the following setattrs of these attributes,
387 * e.g. for atime update. */
388 info->mti_attr.ma_valid = 0;
390 mdt_object_som_enable(o, o->mot_ioepoch);
393 cfs_up(&o->mot_ioepoch_sem);
394 /* If recovery is needed, tell the client to perform GETATTR under
396 if (ret == MDT_IOEPOCH_GETATTR && recovery) {
397 struct mdt_body *rep;
398 rep = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
399 rep->valid |= OBD_MD_FLGETATTRLOCK;
405 cfs_up(&o->mot_ioepoch_sem);
410 * Close IOEpoch (opened file or FMODE_EPOCH state). It happens if:
411 * - a client closes the IOEpoch;
412 * - a client eviction occured.
414 * MDT_IOEPOCH_OPENED if the client does not close IOEpoch.
415 * MDT_IOEPOCH_CLOSED if the client closes IOEpoch.
416 * MDT_IOEPOCH_GETATTR if the client closes IOEpoch but another SOM attribute
419 static int mdt_ioepoch_close(struct mdt_thread_info *info, struct mdt_object *o)
421 struct ptlrpc_request *req = mdt_info_req(info);
424 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
425 !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
428 LASSERT(o->mot_ioepoch_count);
429 LASSERT(info->mti_ioepoch == NULL ||
430 info->mti_ioepoch->ioepoch == o->mot_ioepoch);
432 /* IOEpoch is closed only if client tells about it or eviction occures.
433 * In the replay case, always close the epoch. */
435 RETURN(mdt_ioepoch_close_on_eviction(info, o));
436 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
437 RETURN(mdt_ioepoch_close_on_replay(info, o));
438 if (info->mti_ioepoch->flags & MF_EPOCH_CLOSE)
439 RETURN(mdt_ioepoch_close_reg(info, o));
440 /* IO epoch is not closed. */
441 RETURN(MDT_IOEPOCH_OPENED);
445 * Close FMODE_SOM state, when IOEpoch is already closed and we are waiting for
446 * attribute update. It happens if:
447 * - SOM Attribute Update is obtained;
448 * - the client failed to obtain it and informs MDS about it;
449 * - a client eviction occured.
450 * Apply obtained attributes for the 1st case, wipe out the on-disk SOM
453 int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o)
455 struct ptlrpc_request *req = mdt_info_req(info);
457 int act = MDT_SOM_ENABLE;
461 LASSERT(!req || info->mti_ioepoch);
462 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
463 !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
466 /* No size whereas MF_SOM_CHANGE is set means client failed to
467 * obtain ost attributes, drop the SOM cache on disk if so. */
469 (info->mti_ioepoch &&
470 info->mti_ioepoch->flags & MF_SOM_CHANGE &&
471 !(info->mti_attr.ma_attr.la_valid & LA_SIZE)))
472 act = MDT_SOM_DISABLE;
474 cfs_down(&o->mot_ioepoch_sem);
475 /* Mark the object it is the recovery state if we failed to obtain
477 if (act == MDT_SOM_DISABLE)
478 o->mot_flags |= MOF_SOM_RECOV;
480 if (!mdt_ioepoch_opened(o)) {
481 ioepoch = info->mti_ioepoch ?
482 info->mti_ioepoch->ioepoch : o->mot_ioepoch;
484 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
485 rc = mdt_som_attr_set(info, o, ioepoch, act);
486 mdt_object_som_enable(o, ioepoch);
488 cfs_up(&o->mot_ioepoch_sem);
492 int mdt_write_read(struct mdt_object *o)
496 cfs_down(&o->mot_ioepoch_sem);
497 rc = o->mot_writecount;
498 cfs_up(&o->mot_ioepoch_sem);
502 int mdt_write_get(struct mdt_object *o)
506 cfs_down(&o->mot_ioepoch_sem);
507 if (o->mot_writecount < 0)
511 cfs_up(&o->mot_ioepoch_sem);
515 void mdt_write_put(struct mdt_object *o)
518 cfs_down(&o->mot_ioepoch_sem);
520 cfs_up(&o->mot_ioepoch_sem);
524 static int mdt_write_deny(struct mdt_object *o)
528 cfs_down(&o->mot_ioepoch_sem);
529 if (o->mot_writecount > 0)
533 cfs_up(&o->mot_ioepoch_sem);
537 static void mdt_write_allow(struct mdt_object *o)
540 cfs_down(&o->mot_ioepoch_sem);
542 cfs_up(&o->mot_ioepoch_sem);
546 /* there can be no real transaction so prepare the fake one */
547 static void mdt_empty_transno(struct mdt_thread_info* info)
549 struct mdt_device *mdt = info->mti_mdt;
550 struct ptlrpc_request *req = mdt_info_req(info);
553 /* transaction has occurred already */
554 if (lustre_msg_get_transno(req->rq_repmsg) != 0) {
559 cfs_spin_lock(&mdt->mdt_lut.lut_translock);
560 if (info->mti_transno == 0) {
561 info->mti_transno = ++ mdt->mdt_lut.lut_last_transno;
563 /* should be replay */
564 if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
565 mdt->mdt_lut.lut_last_transno = info->mti_transno;
567 cfs_spin_unlock(&mdt->mdt_lut.lut_translock);
569 CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n",
571 req->rq_export->exp_obd->obd_last_committed);
573 req->rq_transno = info->mti_transno;
574 lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
578 void mdt_mfd_set_mode(struct mdt_file_data *mfd, int mode)
580 LASSERT(mfd != NULL);
582 CDEBUG(D_HA, "Change mfd %p mode 0x%x->0x%x\n",
583 mfd, (unsigned int)mfd->mfd_mode, (unsigned int)mode);
585 mfd->mfd_mode = mode;
588 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
589 struct mdt_object *o, int flags, int created)
591 struct ptlrpc_request *req = mdt_info_req(info);
592 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
593 struct mdt_file_data *mfd;
594 struct md_attr *ma = &info->mti_attr;
595 struct lu_attr *la = &ma->ma_attr;
596 struct mdt_body *repbody;
597 int rc = 0, isdir, isreg;
600 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
602 isreg = S_ISREG(la->la_mode);
603 isdir = S_ISDIR(la->la_mode);
604 if (isreg && !(ma->ma_valid & MA_LOV)) {
606 * No EA, check whether it is will set regEA and dirEA since in
607 * above attr get, these size might be zero, so reset it, to
608 * retrieve the MD after create obj.
610 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
613 /* in replay case, p == NULL */
614 rc = mdt_create_data(info, p, o);
619 CDEBUG(D_INODE, "after open, ma_valid bit = "LPX64" lmm_size = %d\n",
620 ma->ma_valid, ma->ma_lmm_size);
622 if (ma->ma_valid & MA_LOV) {
623 LASSERT(ma->ma_lmm_size != 0);
624 repbody->eadatasize = ma->ma_lmm_size;
626 repbody->valid |= OBD_MD_FLDIREA;
628 repbody->valid |= OBD_MD_FLEASIZE;
631 if (flags & FMODE_WRITE) {
632 rc = mdt_write_get(o);
634 mdt_ioepoch_open(info, o, created);
635 repbody->ioepoch = o->mot_ioepoch;
637 } else if (flags & MDS_FMODE_EXEC) {
638 rc = mdt_write_deny(o);
643 rc = mo_open(info->mti_env, mdt_object_child(o),
644 created ? flags | MDS_OPEN_CREATED : flags);
651 * Keep a reference on this object for this open, and is
652 * released by mdt_mfd_close().
654 mdt_object_get(info->mti_env, o);
657 * @flags is always not zero. At least it should be FMODE_READ,
658 * FMODE_WRITE or FMODE_EXEC.
663 mdt_mfd_set_mode(mfd, flags);
666 mfd->mfd_xid = req->rq_xid;
669 if (req_is_replay(req)) {
670 struct mdt_file_data *old_mfd;
671 /* Check wheather old cookie already exist in
672 * the list, becasue when do recovery, client
673 * might be disconnected from server, and
674 * restart replay, so there maybe some orphan
675 * mfd here, we should remove them */
676 LASSERT(info->mti_rr.rr_handle != NULL);
677 old_mfd = mdt_handle2mfd(info, info->mti_rr.rr_handle);
679 CDEBUG(D_HA, "del orph mfd %p fid=("DFID") "
682 PFID(mdt_object_fid(mfd->mfd_object)),
683 info->mti_rr.rr_handle->cookie);
684 cfs_spin_lock(&med->med_open_lock);
685 class_handle_unhash(&old_mfd->mfd_handle);
686 cfs_list_del_init(&old_mfd->mfd_list);
687 cfs_spin_unlock(&med->med_open_lock);
688 mdt_mfd_close(info, old_mfd);
690 CDEBUG(D_HA, "Store old cookie "LPX64" in new mfd\n",
691 info->mti_rr.rr_handle->cookie);
692 mfd->mfd_old_handle.cookie =
693 info->mti_rr.rr_handle->cookie;
695 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
697 if (req->rq_export->exp_disconnected) {
698 cfs_spin_lock(&med->med_open_lock);
699 class_handle_unhash(&mfd->mfd_handle);
700 cfs_list_del_init(&mfd->mfd_list);
701 cfs_spin_unlock(&med->med_open_lock);
702 mdt_mfd_close(info, mfd);
704 cfs_spin_lock(&med->med_open_lock);
705 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
706 cfs_spin_unlock(&med->med_open_lock);
709 mdt_empty_transno(info);
717 static int mdt_finish_open(struct mdt_thread_info *info,
718 struct mdt_object *p, struct mdt_object *o,
719 int flags, int created, struct ldlm_reply *rep)
721 struct ptlrpc_request *req = mdt_info_req(info);
722 struct obd_export *exp = req->rq_export;
723 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
724 struct md_attr *ma = &info->mti_attr;
725 struct lu_attr *la = &ma->ma_attr;
726 struct mdt_file_data *mfd;
727 struct mdt_body *repbody;
729 int isreg, isdir, islnk;
733 LASSERT(ma->ma_valid & MA_INODE);
735 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
737 isreg = S_ISREG(la->la_mode);
738 isdir = S_ISDIR(la->la_mode);
739 islnk = S_ISLNK(la->la_mode);
740 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
742 if (exp_connect_rmtclient(exp)) {
743 void *buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
745 rc = mdt_pack_remote_perm(info, o, buf);
747 repbody->valid &= ~OBD_MD_FLRMTPERM;
748 repbody->aclsize = 0;
750 repbody->valid |= OBD_MD_FLRMTPERM;
751 repbody->aclsize = sizeof(struct mdt_remote_perm);
754 #ifdef CONFIG_FS_POSIX_ACL
755 else if (exp->exp_connect_flags & OBD_CONNECT_ACL) {
756 const struct lu_env *env = info->mti_env;
757 struct md_object *next = mdt_object_child(o);
758 struct lu_buf *buf = &info->mti_buf;
760 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
761 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
763 if (buf->lb_len > 0) {
764 rc = mo_xattr_get(env, next, buf,
765 XATTR_NAME_ACL_ACCESS);
767 if (rc == -ENODATA) {
768 repbody->aclsize = 0;
769 repbody->valid |= OBD_MD_FLACL;
771 } else if (rc == -EOPNOTSUPP) {
774 CERROR("got acl size: %d\n", rc);
777 repbody->aclsize = rc;
778 repbody->valid |= OBD_MD_FLACL;
785 if (info->mti_mdt->mdt_opts.mo_mds_capa &&
786 exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
787 struct lustre_capa *capa;
789 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
791 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
792 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
795 repbody->valid |= OBD_MD_FLMDSCAPA;
797 if (info->mti_mdt->mdt_opts.mo_oss_capa &&
798 exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA &&
799 S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) {
800 struct lustre_capa *capa;
802 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
804 capa->lc_opc = CAPA_OPC_OSS_DEFAULT | capa_open_opc(flags);
805 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
808 repbody->valid |= OBD_MD_FLOSSCAPA;
812 * If we are following a symlink, don't open; and do not return open
813 * handle for special nodes as client required.
815 if (islnk || (!isreg && !isdir &&
816 (req->rq_export->exp_connect_flags & OBD_CONNECT_NODEVOH))) {
817 lustre_msg_set_transno(req->rq_repmsg, 0);
821 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
824 * We need to return the existing object's fid back, so it is done here,
825 * after preparing the reply.
827 if (!created && (flags & MDS_OPEN_EXCL) && (flags & MDS_OPEN_CREAT))
830 /* This can't be done earlier, we need to return reply body */
832 if (flags & (MDS_OPEN_CREAT | FMODE_WRITE)) {
833 /* We are trying to create or write an existing dir. */
836 } else if (flags & MDS_OPEN_DIRECTORY)
839 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
840 OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE)) {
845 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
846 cfs_spin_lock(&med->med_open_lock);
847 cfs_list_for_each(t, &med->med_open_head) {
848 mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list);
849 if (mfd->mfd_xid == req->rq_xid) {
854 cfs_spin_unlock(&med->med_open_lock);
857 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
858 /*set repbody->ea_size for resent case*/
859 if (ma->ma_valid & MA_LOV) {
860 LASSERT(ma->ma_lmm_size != 0);
861 repbody->eadatasize = ma->ma_lmm_size;
863 repbody->valid |= OBD_MD_FLDIREA;
865 repbody->valid |= OBD_MD_FLEASIZE;
871 rc = mdt_mfd_open(info, p, o, flags, created);
875 extern void mdt_req_from_lcd(struct ptlrpc_request *req,
876 struct lsd_client_data *lcd);
878 void mdt_reconstruct_open(struct mdt_thread_info *info,
879 struct mdt_lock_handle *lhc)
881 const struct lu_env *env = info->mti_env;
882 struct mdt_device *mdt = info->mti_mdt;
883 struct req_capsule *pill = info->mti_pill;
884 struct ptlrpc_request *req = mdt_info_req(info);
885 struct tg_export_data *ted = &req->rq_export->exp_target_data;
886 struct lsd_client_data *lcd = ted->ted_lcd;
887 struct md_attr *ma = &info->mti_attr;
888 struct mdt_reint_record *rr = &info->mti_rr;
889 __u32 flags = info->mti_spec.sp_cr_flags;
890 struct ldlm_reply *ldlm_rep;
891 struct mdt_object *parent;
892 struct mdt_object *child;
893 struct mdt_body *repbody;
897 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
898 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
899 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
901 ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
902 ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD,
904 ma->ma_need = MA_INODE;
905 if (ma->ma_lmm_size > 0)
906 ma->ma_need |= MA_LOV;
910 mdt_req_from_lcd(req, lcd);
911 mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data);
913 CERROR("This is reconstruct open: disp="LPX64", result=%d\n",
914 ldlm_rep->lock_policy_res1, req->rq_status);
916 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) &&
918 /* We did not create successfully, return error to client. */
919 GOTO(out, rc = req->rq_status);
921 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE)) {
922 struct obd_export *exp = req->rq_export;
924 * We failed after creation, but we do not know in which step
925 * we failed. So try to check the child object.
927 parent = mdt_object_find(env, mdt, rr->rr_fid1);
928 if (IS_ERR(parent)) {
929 rc = PTR_ERR(parent);
930 LCONSOLE_WARN("Parent "DFID" lookup error %d."
931 " Evicting client %s with export %s.\n",
932 PFID(mdt_object_fid(parent)), rc,
933 obd_uuid2str(&exp->exp_client_uuid),
934 obd_export_nid2str(exp));
935 mdt_export_evict(exp);
939 child = mdt_object_find(env, mdt, rr->rr_fid2);
942 LCONSOLE_WARN("Child "DFID" lookup error %d."
943 " Evicting client %s with export %s.\n",
944 PFID(mdt_object_fid(child)), rc,
945 obd_uuid2str(&exp->exp_client_uuid),
946 obd_export_nid2str(exp));
947 mdt_object_put(env, parent);
948 mdt_export_evict(exp);
952 rc = mdt_object_exists(child);
954 struct md_object *next;
956 mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
957 next = mdt_object_child(child);
958 rc = mo_attr_get(env, next, ma);
960 rc = mdt_finish_open(info, parent, child,
963 /* the child object was created on remote server */
964 repbody->fid1 = *rr->rr_fid2;
965 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
967 } else if (rc == 0) {
968 /* the child does not exist, we should do regular open */
969 mdt_object_put(env, parent);
970 mdt_object_put(env, child);
971 GOTO(regular_open, 0);
973 mdt_object_put(env, parent);
974 mdt_object_put(env, child);
978 /* We did not try to create, so we are a pure open */
979 rc = mdt_reint_open(info, lhc);
985 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
986 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
989 static int mdt_open_by_fid(struct mdt_thread_info* info,
990 struct ldlm_reply *rep)
992 const struct lu_env *env = info->mti_env;
993 __u32 flags = info->mti_spec.sp_cr_flags;
994 struct mdt_reint_record *rr = &info->mti_rr;
995 struct md_attr *ma = &info->mti_attr;
996 struct mdt_object *o;
1000 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
1002 RETURN(rc = PTR_ERR(o));
1004 rc = mdt_object_exists(o);
1006 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1010 rc = mo_attr_get(env, mdt_object_child(o), ma);
1012 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1013 } else if (rc == 0) {
1016 /* the child object was created on remote server */
1017 struct mdt_body *repbody;
1018 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1019 repbody->fid1 = *rr->rr_fid2;
1020 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1024 mdt_object_put(info->mti_env, o);
1028 static int mdt_open_anon_by_fid(struct mdt_thread_info* info,
1029 struct ldlm_reply *rep,
1030 struct mdt_lock_handle *lhc)
1032 __u32 flags = info->mti_spec.sp_cr_flags;
1033 struct mdt_reint_record *rr = &info->mti_rr;
1034 struct md_attr *ma = &info->mti_attr;
1035 struct mdt_object *o;
1040 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
1042 RETURN(rc = PTR_ERR(o));
1044 rc = mdt_object_exists(o);
1046 mdt_set_disposition(info, rep, (DISP_LOOKUP_EXECD |
1048 GOTO(out, rc = -ENOENT);
1049 } else if (rc < 0) {
1050 CERROR("NFS remote open shouldn't happen.\n");
1054 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1058 if (flags & FMODE_WRITE)
1060 else if (flags & MDS_FMODE_EXEC)
1065 mdt_lock_handle_init(lhc);
1066 mdt_lock_reg_init(lhc, lm);
1067 rc = mdt_object_lock(info, o, lhc,
1068 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN,
1073 rc = mo_attr_get(info->mti_env, mdt_object_child(o), ma);
1077 if (flags & MDS_OPEN_LOCK)
1078 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1079 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1081 if (!(flags & MDS_OPEN_LOCK))
1082 mdt_object_unlock(info, o, lhc, 1);
1086 mdt_object_put(info->mti_env, o);
1090 int mdt_pin(struct mdt_thread_info* info)
1093 RETURN(err_serious(-EOPNOTSUPP));
1096 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1097 static int mdt_cross_open(struct mdt_thread_info* info,
1098 const struct lu_fid *fid,
1099 struct ldlm_reply *rep, __u32 flags)
1101 struct md_attr *ma = &info->mti_attr;
1102 struct mdt_object *o;
1106 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1108 RETURN(rc = PTR_ERR(o));
1110 rc = mdt_object_exists(o);
1112 /* Do permission check for cross-open. */
1113 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o),
1114 NULL, flags | MDS_OPEN_CROSS);
1118 mdt_set_capainfo(info, 0, fid, BYPASS_CAPA);
1119 rc = mo_attr_get(info->mti_env, mdt_object_child(o), ma);
1121 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1122 } else if (rc == 0) {
1124 * Something is wrong here. lookup was positive but there is
1127 CERROR("Cross-ref object doesn't exist!\n");
1130 /* Something is wrong here, the object is on another MDS! */
1131 CERROR("The object isn't on this server! FLD error?\n");
1132 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1134 "Object isn't on this server! FLD error?\n");
1140 mdt_object_put(info->mti_env, o);
1144 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1146 struct mdt_device *mdt = info->mti_mdt;
1147 struct ptlrpc_request *req = mdt_info_req(info);
1148 struct mdt_object *parent;
1149 struct mdt_object *child;
1150 struct mdt_lock_handle *lh;
1151 struct ldlm_reply *ldlm_rep;
1152 struct mdt_body *repbody;
1153 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1154 struct md_attr *ma = &info->mti_attr;
1155 __u32 create_flags = info->mti_spec.sp_cr_flags;
1156 struct mdt_reint_record *rr = &info->mti_rr;
1157 struct lu_name *lname;
1163 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1164 (obd_timeout + 1) / 4);
1166 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1168 ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
1169 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD,
1171 ma->ma_need = MA_INODE;
1172 if (ma->ma_lmm_size > 0)
1173 ma->ma_need |= MA_LOV;
1177 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1178 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1180 if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) {
1181 CERROR("file join is not supported anymore.\n");
1182 GOTO(out, result = err_serious(-EOPNOTSUPP));
1184 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1186 if ((create_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1187 info->mti_spec.u.sp_ea.eadata == NULL)
1188 GOTO(out, result = err_serious(-EINVAL));
1190 CDEBUG(D_INODE, "I am going to open "DFID"/(%s->"DFID") "
1191 "cr_flag=0%o mode=0%06o msg_flag=0x%x\n",
1192 PFID(rr->rr_fid1), rr->rr_name,
1193 PFID(rr->rr_fid2), create_flags,
1194 ma->ma_attr.la_mode, msg_flags);
1196 if (req_is_replay(req) ||
1197 (req->rq_export->exp_libclient && create_flags&MDS_OPEN_HAS_EA)) {
1198 /* This is a replay request or from liblustre with ea. */
1199 result = mdt_open_by_fid(info, ldlm_rep);
1201 if (result != -ENOENT) {
1202 if (req->rq_export->exp_libclient &&
1203 create_flags&MDS_OPEN_HAS_EA)
1204 GOTO(out, result = 0);
1208 * We didn't find the correct object, so we need to re-create it
1209 * via a regular replay.
1211 if (!(create_flags & MDS_OPEN_CREAT)) {
1212 DEBUG_REQ(D_ERROR, req,"OPEN & CREAT not in open replay.");
1213 GOTO(out, result = -EFAULT);
1215 CDEBUG(D_INFO, "Open replay did find object, continue as "
1217 } else if (rr->rr_namelen == 0 && !info->mti_cross_ref &&
1218 create_flags & MDS_OPEN_LOCK) {
1219 result = mdt_open_anon_by_fid(info, ldlm_rep, lhc);
1223 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1224 GOTO(out, result = err_serious(-ENOMEM));
1226 mdt_set_disposition(info, ldlm_rep,
1227 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1229 if (info->mti_cross_ref) {
1230 /* This is cross-ref open */
1231 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1232 result = mdt_cross_open(info, rr->rr_fid1, ldlm_rep,
1237 lh = &info->mti_lh[MDT_LH_PARENT];
1238 mdt_lock_pdo_init(lh, (create_flags & MDS_OPEN_CREAT) ?
1239 LCK_PW : LCK_PR, rr->rr_name, rr->rr_namelen);
1241 parent = mdt_object_find_lock(info, rr->rr_fid1, lh,
1242 MDS_INODELOCK_UPDATE);
1244 GOTO(out, result = PTR_ERR(parent));
1246 /* get and check version of parent */
1247 result = mdt_version_get_check(info, parent, 0);
1249 GOTO(out_parent, result);
1251 fid_zero(child_fid);
1253 lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen);
1254 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1255 lname, child_fid, &info->mti_spec);
1256 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1257 "looking for "DFID"/%s, result fid="DFID"\n",
1258 PFID(mdt_object_fid(parent)), rr->rr_name, PFID(child_fid));
1260 if (result != 0 && result != -ENOENT && result != -ESTALE)
1261 GOTO(out_parent, result);
1263 if (result == -ENOENT || result == -ESTALE) {
1264 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1265 if (result == -ESTALE) {
1267 * -ESTALE means the parent is a dead(unlinked) dir, so
1268 * it should return -ENOENT to in accordance with the
1269 * original mds implementaion.
1271 GOTO(out_parent, result = -ENOENT);
1273 if (!(create_flags & MDS_OPEN_CREAT))
1274 GOTO(out_parent, result);
1275 *child_fid = *info->mti_rr.rr_fid2;
1276 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1280 * Check for O_EXCL is moved to the mdt_finish_open(), we need to
1281 * return FID back in that case.
1283 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1286 child = mdt_object_find(info->mti_env, mdt, child_fid);
1288 GOTO(out_parent, result = PTR_ERR(child));
1290 /** check version of child */
1291 rc = mdt_version_get_check(info, child, 1);
1293 GOTO(out_child, result = rc);
1295 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1296 if (result == -ENOENT) {
1297 /* save versions in reply */
1298 mdt_version_get_save(info, parent, 0);
1299 mdt_version_get_save(info, child, 1);
1301 /* version of child will be changed */
1302 info->mti_mos = child;
1304 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1305 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1307 /* Let lower layers know what is lock mode on directory. */
1308 info->mti_spec.sp_cr_mode =
1309 mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
1312 * Do not perform lookup sanity check. We know that name does
1315 info->mti_spec.sp_cr_lookup = 0;
1316 info->mti_spec.sp_feat = &dt_directory_features;
1318 result = mdo_create(info->mti_env,
1319 mdt_object_child(parent),
1321 mdt_object_child(child),
1324 if (result == -ERESTART) {
1325 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1326 GOTO(out_child, result);
1329 GOTO(out_child, result);
1333 /* We have to get attr & lov ea for this object */
1334 result = mo_attr_get(info->mti_env, mdt_object_child(child),
1337 * The object is on remote node, return its FID for remote open.
1339 if (result == -EREMOTE) {
1341 * Check if this lock already was sent to client and
1342 * this is resent case. For resent case do not take lock
1343 * again, use what is already granted.
1345 LASSERT(lhc != NULL);
1347 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1348 struct ldlm_lock *lock;
1350 LASSERT(msg_flags & MSG_RESENT);
1352 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1354 CERROR("Invalid lock handle "LPX64"\n",
1355 lhc->mlh_reg_lh.cookie);
1358 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1359 &lock->l_resource->lr_name));
1360 LDLM_LOCK_PUT(lock);
1363 mdt_lock_handle_init(lhc);
1364 mdt_lock_reg_init(lhc, LCK_PR);
1366 rc = mdt_object_lock(info, child, lhc,
1367 MDS_INODELOCK_LOOKUP,
1370 repbody->fid1 = *mdt_object_fid(child);
1371 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1374 GOTO(out_child, result);
1378 LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh));
1380 /* get openlock if this is not replay and if a client requested it */
1381 if (!req_is_replay(req) && create_flags & MDS_OPEN_LOCK) {
1384 if (create_flags & FMODE_WRITE)
1386 else if (create_flags & MDS_FMODE_EXEC)
1390 mdt_lock_handle_init(lhc);
1391 mdt_lock_reg_init(lhc, lm);
1392 rc = mdt_object_lock(info, child, lhc,
1393 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN,
1397 GOTO(out_child, result);
1400 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1404 /* Try to open it now. */
1405 rc = mdt_finish_open(info, parent, child, create_flags,
1409 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
1410 /* openlock was acquired and mdt_finish_open failed -
1411 drop the openlock */
1412 mdt_object_unlock(info, child, lhc, 1);
1416 ma->ma_cookie_size = 0;
1417 info->mti_no_need_trans = 1;
1418 rc = mdo_unlink(info->mti_env,
1419 mdt_object_child(parent),
1420 mdt_object_child(child),
1424 CERROR("Error in cleanup of open\n");
1429 mdt_object_put(info->mti_env, child);
1431 mdt_object_unlock_put(info, parent, lh, result || !created);
1433 if (result && result != -EREMOTE)
1434 lustre_msg_set_transno(req->rq_repmsg, 0);
1438 #define MFD_CLOSED(mode) (((mode) & ~(FMODE_EPOCH | FMODE_SOM | \
1439 FMODE_TRUNC)) == FMODE_CLOSED)
1441 static int mdt_mfd_closed(struct mdt_file_data *mfd)
1443 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_mode));
1446 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
1448 struct mdt_object *o = mfd->mfd_object;
1449 struct md_object *next = mdt_object_child(o);
1450 struct md_attr *ma = &info->mti_attr;
1451 int ret = MDT_IOEPOCH_CLOSED;
1456 mode = mfd->mfd_mode;
1458 if ((mode & FMODE_WRITE) || (mode & FMODE_TRUNC)) {
1460 ret = mdt_ioepoch_close(info, o);
1461 } else if (mode & MDS_FMODE_EXEC) {
1463 } else if (mode & FMODE_EPOCH) {
1464 ret = mdt_ioepoch_close(info, o);
1465 } else if (mode & FMODE_SOM) {
1466 ret = mdt_som_au_close(info, o);
1469 /* Update atime on close only. */
1470 if ((mode & MDS_FMODE_EXEC || mode & FMODE_READ || mode & FMODE_WRITE)
1471 && (ma->ma_valid & MA_INODE) && (ma->ma_attr.la_valid & LA_ATIME)) {
1472 /* Set the atime only. */
1473 ma->ma_attr.la_valid = LA_ATIME;
1474 rc = mo_attr_set(info->mti_env, next, ma);
1477 ma->ma_need |= MA_INODE;
1480 if (!MFD_CLOSED(mode))
1481 rc = mo_close(info->mti_env, next, ma);
1483 if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) {
1484 struct mdt_export_data *med;
1486 /* The IOepoch is still opened or SOM update is needed.
1487 * Put mfd back into the list. */
1488 LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
1489 mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ?
1490 FMODE_EPOCH : FMODE_SOM);
1492 LASSERT(mdt_info_req(info));
1493 med = &mdt_info_req(info)->rq_export->exp_mdt_data;
1494 cfs_spin_lock(&med->med_open_lock);
1495 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
1496 class_handle_hash_back(&mfd->mfd_handle);
1497 cfs_spin_unlock(&med->med_open_lock);
1499 if (ret == MDT_IOEPOCH_OPENED) {
1503 CDEBUG(D_INODE, "Size-on-MDS attribute update is "
1504 "needed on "DFID"\n", PFID(mdt_object_fid(o)));
1508 mdt_object_put(info->mti_env, o);
1511 RETURN(rc ? rc : ret);
1514 int mdt_close(struct mdt_thread_info *info)
1516 struct mdt_export_data *med;
1517 struct mdt_file_data *mfd;
1518 struct mdt_object *o;
1519 struct md_attr *ma = &info->mti_attr;
1520 struct mdt_body *repbody = NULL;
1521 struct ptlrpc_request *req = mdt_info_req(info);
1525 /* Close may come with the Size-on-MDS update. Unpack it. */
1526 rc = mdt_close_unpack(info);
1528 RETURN(err_serious(rc));
1530 LASSERT(info->mti_ioepoch);
1532 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
1533 info->mti_mdt->mdt_max_mdsize);
1534 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
1535 info->mti_mdt->mdt_max_cookiesize);
1536 rc = req_capsule_server_pack(info->mti_pill);
1537 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
1539 mdt_shrink_reply(info);
1540 RETURN(lustre_msg_get_status(req->rq_repmsg));
1543 /* Continue to close handle even if we can not pack reply */
1545 repbody = req_capsule_server_get(info->mti_pill,
1547 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
1549 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
1552 ma->ma_cookie = req_capsule_server_get(info->mti_pill,
1554 ma->ma_cookie_size = req_capsule_get_size(info->mti_pill,
1557 ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE;
1558 repbody->eadatasize = 0;
1559 repbody->aclsize = 0;
1561 rc = err_serious(rc);
1564 med = &req->rq_export->exp_mdt_data;
1565 cfs_spin_lock(&med->med_open_lock);
1566 mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
1567 if (mdt_mfd_closed(mfd)) {
1568 cfs_spin_unlock(&med->med_open_lock);
1569 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
1570 ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1),
1571 info->mti_ioepoch->handle.cookie);
1572 /** not serious error since bug 3633 */
1575 class_handle_unhash(&mfd->mfd_handle);
1576 cfs_list_del_init(&mfd->mfd_list);
1577 cfs_spin_unlock(&med->med_open_lock);
1579 /* Do not lose object before last unlink. */
1580 o = mfd->mfd_object;
1581 mdt_object_get(info->mti_env, o);
1582 ret = mdt_mfd_close(info, mfd);
1583 if (repbody != NULL)
1584 rc = mdt_handle_last_unlink(info, o, ma);
1585 mdt_empty_transno(info);
1586 mdt_object_put(info->mti_env, o);
1588 if (repbody != NULL)
1589 mdt_shrink_reply(info);
1591 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
1592 RETURN(err_serious(-ENOMEM));
1594 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
1595 OBD_FAIL_MDS_CLOSE_NET_REP))
1596 info->mti_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
1597 RETURN(rc ? rc : ret);
1601 * DONE_WRITING rpc handler.
1603 * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()),
1604 * only those DONE_WRITING rpc will be replayed which really wrote smth on disk,
1605 * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just
1606 * skip attributes and reconstruct the reply here.
1608 int mdt_done_writing(struct mdt_thread_info *info)
1610 struct ptlrpc_request *req = mdt_info_req(info);
1611 struct mdt_body *repbody = NULL;
1612 struct mdt_export_data *med;
1613 struct mdt_file_data *mfd;
1617 rc = req_capsule_server_pack(info->mti_pill);
1619 RETURN(err_serious(rc));
1621 repbody = req_capsule_server_get(info->mti_pill,
1623 repbody->eadatasize = 0;
1624 repbody->aclsize = 0;
1626 /* Done Writing may come with the Size-on-MDS update. Unpack it. */
1627 rc = mdt_close_unpack(info);
1629 RETURN(err_serious(rc));
1631 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL))
1632 RETURN(lustre_msg_get_status(req->rq_repmsg));
1634 med = &info->mti_exp->exp_mdt_data;
1635 cfs_spin_lock(&med->med_open_lock);
1636 mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
1638 cfs_spin_unlock(&med->med_open_lock);
1639 CDEBUG(D_INODE, "no handle for done write: fid = "DFID
1640 ": cookie = "LPX64" ioepoch = "LPU64"\n",
1641 PFID(info->mti_rr.rr_fid1),
1642 info->mti_ioepoch->handle.cookie,
1643 info->mti_ioepoch->ioepoch);
1644 /* If this is a replay, reconstruct the transno. */
1645 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
1646 mdt_empty_transno(info);
1647 RETURN(info->mti_ioepoch->flags & MF_SOM_AU ?
1653 LASSERT(mfd->mfd_mode == FMODE_EPOCH ||
1654 mfd->mfd_mode == FMODE_TRUNC);
1655 class_handle_unhash(&mfd->mfd_handle);
1656 cfs_list_del_init(&mfd->mfd_list);
1657 cfs_spin_unlock(&med->med_open_lock);
1659 /* Set EPOCH CLOSE flag if not set by client. */
1660 info->mti_ioepoch->flags |= MF_EPOCH_CLOSE;
1661 info->mti_attr.ma_valid = 0;
1663 info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
1664 OBD_ALLOC(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
1665 if (info->mti_attr.ma_lmm == NULL)
1668 rc = mdt_mfd_close(info, mfd);
1670 OBD_FREE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
1671 mdt_empty_transno(info);