4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
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 static struct portals_handle_ops mfd_handle_ops = {
58 .hop_addref = mdt_mfd_get,
62 /* Create a new mdt_file_data struct, initialize it,
63 * and insert it to global hash table */
64 struct mdt_file_data *mdt_mfd_new(void)
66 struct mdt_file_data *mfd;
71 CFS_INIT_LIST_HEAD(&mfd->mfd_handle.h_link);
72 CFS_INIT_LIST_HEAD(&mfd->mfd_list);
73 class_handle_hash(&mfd->mfd_handle, &mfd_handle_ops);
79 * Find the mfd pointed to by handle in global hash table.
80 * In case of replay the handle is obsoleted
81 * but mfd can be found in mfd list by that handle
83 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *info,
84 const struct lustre_handle *handle)
86 struct ptlrpc_request *req = mdt_info_req(info);
87 struct mdt_file_data *mfd;
90 LASSERT(handle != NULL);
91 mfd = class_handle2object(handle->cookie);
92 /* during dw/setattr replay the mfd can be found by old handle */
93 if (mfd == NULL && req_is_replay(req)) {
94 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
95 cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
96 if (mfd->mfd_old_handle.cookie == handle->cookie)
105 void mdt_mfd_free(struct mdt_file_data *mfd)
107 LASSERT(cfs_list_empty(&mfd->mfd_list));
108 OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle);
111 static int mdt_create_data(struct mdt_thread_info *info,
112 struct mdt_object *p, struct mdt_object *o)
114 struct md_op_spec *spec = &info->mti_spec;
115 struct md_attr *ma = &info->mti_attr;
119 if (!md_should_create(spec->sp_cr_flags))
122 ma->ma_need = MA_INODE | MA_LOV;
124 cfs_mutex_lock(&o->mot_lov_mutex);
125 if (!(o->mot_flags & MOF_LOV_CREATED)) {
126 rc = mdo_create_data(info->mti_env,
127 p ? mdt_object_child(p) : NULL,
128 mdt_object_child(o), spec, ma);
129 if (rc == 0 && ma->ma_valid & MA_LOV)
130 o->mot_flags |= MOF_LOV_CREATED;
132 cfs_mutex_unlock(&o->mot_lov_mutex);
136 static int mdt_ioepoch_opened(struct mdt_object *mo)
138 return mo->mot_ioepoch_count;
141 int mdt_object_is_som_enabled(struct mdt_object *mo)
143 return !mo->mot_ioepoch;
147 * Re-enable Size-on-MDS.
148 * Call under ->mot_ioepoch_mutex.
150 static void mdt_object_som_enable(struct mdt_object *mo, __u64 ioepoch)
152 if (ioepoch == mo->mot_ioepoch) {
153 LASSERT(!mdt_ioepoch_opened(mo));
160 * Open the IOEpoch. It is allowed if @writecount is not negative.
161 * The epoch and writecount handling is performed under the mot_ioepoch_mutex.
163 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
166 struct mdt_device *mdt = info->mti_mdt;
171 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
172 !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
175 cfs_mutex_lock(&o->mot_ioepoch_mutex);
176 if (mdt_ioepoch_opened(o)) {
177 /* Epoch continues even if there is no writers yet. */
178 CDEBUG(D_INODE, "continue epoch "LPU64" for "DFID"\n",
179 o->mot_ioepoch, PFID(mdt_object_fid(o)));
181 /* XXX: ->mdt_ioepoch is not initialized at the mount */
182 cfs_spin_lock(&mdt->mdt_ioepoch_lock);
183 if (mdt->mdt_ioepoch < info->mti_replayepoch)
184 mdt->mdt_ioepoch = info->mti_replayepoch;
186 if (info->mti_replayepoch)
187 o->mot_ioepoch = info->mti_replayepoch;
188 else if (++mdt->mdt_ioepoch == IOEPOCH_INVAL)
189 o->mot_ioepoch = ++mdt->mdt_ioepoch;
191 o->mot_ioepoch = mdt->mdt_ioepoch;
193 cfs_spin_unlock(&mdt->mdt_ioepoch_lock);
195 CDEBUG(D_INODE, "starting epoch "LPU64" for "DFID"\n",
196 o->mot_ioepoch, PFID(mdt_object_fid(o)));
198 o->mot_flags |= MOF_SOM_CREATED;
201 o->mot_ioepoch_count++;
202 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
204 /* Cancel Size-on-MDS attributes cached on clients for the open case.
205 * In the truncate case, see mdt_reint_setattr(). */
206 if (cancel && (info->mti_rr.rr_fid1 != NULL)) {
207 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_CHILD];
208 mdt_lock_reg_init(lh, LCK_EX);
209 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_UPDATE,
212 mdt_object_unlock(info, o, lh, 1);
218 * Update SOM on-disk attributes.
219 * If enabling, write update inodes and lustre-ea with the proper IOEpoch,
220 * mountid and attributes. If disabling, zero IOEpoch id in lustre-ea.
221 * Call under ->mot_ioepoch_mutex.
223 static int mdt_som_attr_set(struct mdt_thread_info *info,
224 struct mdt_object *obj, __u64 ioepoch, int enable)
226 struct md_attr *ma = &info->mti_attr;
230 CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64
231 " on "DFID".\n", enable ? "update" : "disabling",
232 ioepoch, PFID(mdt_object_fid(obj)));
234 ma->ma_valid |= MA_SOM;
235 ma->ma_som = &info->mti_u.som.data;
237 struct mdt_device *mdt = info->mti_mdt;
238 struct lu_attr *la = &ma->ma_attr;
240 ma->ma_som->msd_ioepoch = ioepoch;
241 ma->ma_som->msd_size = la->la_valid & LA_SIZE ? la->la_size : 0;
242 ma->ma_som->msd_blocks = la->la_valid & LA_BLOCKS ?
244 ma->ma_som->msd_mountid = mdt->mdt_lut.lut_obd->u.obt.obt_mount_count;
245 ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME;
247 ma->ma_som->msd_ioepoch = IOEPOCH_INVAL;
248 ma->ma_attr.la_valid &= LA_ATIME;
251 /* Since we have opened the file, it is unnecessary
252 * to check permission when close it. Between the "open"
253 * and "close", maybe someone has changed the file mode
254 * or flags, or the file created mode do not permit wirte,
255 * and so on. Just set MDS_PERM_BYPASS for all the cases. */
256 ma->ma_attr_flags |= MDS_PERM_BYPASS | MDS_SOM;
258 rc = mdt_attr_set(info, obj, ma, 0);
262 /** Perform the eviction specific actions on ioepoch close. */
263 static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info,
264 struct mdt_object *o)
268 cfs_mutex_lock(&o->mot_ioepoch_mutex);
269 CDEBUG(D_INODE, "Eviction. Closing IOepoch "LPU64" on "DFID". "
270 "Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)),
271 o->mot_ioepoch_count);
272 o->mot_ioepoch_count--;
274 /* If eviction occured set MOF_SOM_RECOV,
275 * if no other epoch holders, disable SOM on disk. */
276 o->mot_flags |= MOF_SOM_CHANGE | MOF_SOM_RECOV;
277 if (!mdt_ioepoch_opened(o)) {
278 rc = mdt_som_attr_set(info, o, o->mot_ioepoch, MDT_SOM_DISABLE);
279 mdt_object_som_enable(o, o->mot_ioepoch);
281 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
286 * Perform the replay specific actions on ioepoch close.
287 * Skip SOM attribute update if obtained and just forget about the inode state
288 * for the last ioepoch holder. The SOM cache is invalidated on MDS failure.
290 static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info,
291 struct mdt_object *o)
293 int rc = MDT_IOEPOCH_CLOSED;
296 cfs_mutex_lock(&o->mot_ioepoch_mutex);
297 CDEBUG(D_INODE, "Replay. Closing epoch "LPU64" on "DFID". Count %d\n",
298 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
299 o->mot_ioepoch_count--;
301 /* Get an info from the replayed request if client is supposed
302 * to send an Attibute Update, reconstruct @rc if so */
303 if (info->mti_ioepoch->flags & MF_SOM_AU)
304 rc = MDT_IOEPOCH_GETATTR;
306 if (!mdt_ioepoch_opened(o))
307 mdt_object_som_enable(o, info->mti_ioepoch->ioepoch);
308 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
314 * Regular file IOepoch close.
315 * Closes the ioepoch, checks the object state, apply obtained attributes and
316 * re-enable SOM on the object, if possible. Also checks if the recovery is
317 * needed and packs OBD_MD_FLGETATTRLOCK flag into the reply to force the client
318 * to obtain SOM attributes under the server-side OST locks.
321 * MDT_IOEPOCH_CLOSED if ioepoch is closed.
322 * MDT_IOEPOCH_GETATTR if ioepoch is closed but another SOM update is needed.
324 static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info,
325 struct mdt_object *o)
327 struct md_attr *tmp_ma;
331 int rc = 0, ret = MDT_IOEPOCH_CLOSED;
334 la = &info->mti_attr.ma_attr;
335 achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE);
337 cfs_mutex_lock(&o->mot_ioepoch_mutex);
338 o->mot_ioepoch_count--;
340 tmp_ma = &info->mti_u.som.attr;
341 tmp_ma->ma_lmm = info->mti_attr.ma_lmm;
342 tmp_ma->ma_lmm_size = info->mti_attr.ma_lmm_size;
343 tmp_ma->ma_som = &info->mti_u.som.data;
344 tmp_ma->ma_need = MA_INODE | MA_LOV | MA_SOM;
345 tmp_ma->ma_valid = 0;
346 rc = mo_attr_get(info->mti_env, mdt_object_child(o), tmp_ma);
350 /* Check the on-disk SOM state. */
351 if (o->mot_flags & MOF_SOM_RECOV)
353 else if (!(o->mot_flags & MOF_SOM_CREATED) &&
354 !(tmp_ma->ma_valid & MA_SOM))
357 CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
358 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
360 opened = mdt_ioepoch_opened(o);
362 * If IOEpoch is not opened, check if a Size-on-MDS update is needed.
363 * Skip the check for file with no LOV or for unlink files.
365 if (!opened && tmp_ma->ma_valid & MA_LOV &&
366 !(tmp_ma->ma_valid & MA_INODE && tmp_ma->ma_attr.la_nlink == 0)) {
368 /* If some previous writer was evicted, re-ask the
369 * client for attributes. Even if attributes are
370 * provided, we cannot believe in them.
371 * Another use case is that there is no SOM cache on
372 * disk -- first access with SOM or there was an MDS
374 ret = MDT_IOEPOCH_GETATTR;
375 else if (o->mot_flags & MOF_SOM_CHANGE)
376 /* Some previous writer changed the attribute.
377 * Do not believe to the current Size-on-MDS
378 * update, re-ask client. */
379 ret = MDT_IOEPOCH_GETATTR;
380 else if (!(la->la_valid & LA_SIZE) && achange)
381 /* Attributes were changed by the last writer
382 * only but no Size-on-MDS update is received.*/
383 ret = MDT_IOEPOCH_GETATTR;
386 if (achange || ret == MDT_IOEPOCH_GETATTR)
387 o->mot_flags |= MOF_SOM_CHANGE;
389 /* If epoch ends and relable SOM attributes are obtained, update them.
390 * Create SOM ea for new files even if there is no attributes obtained
391 * (0-length file). */
392 if (ret == MDT_IOEPOCH_CLOSED && !opened) {
393 if (achange || o->mot_flags & MOF_SOM_CREATED) {
394 LASSERT(achange || !(la->la_valid & LA_SIZE));
395 rc = mdt_som_attr_set(info, o, o->mot_ioepoch,
397 /* Avoid the following setattrs of these attributes,
398 * e.g. for atime update. */
399 info->mti_attr.ma_valid = 0;
401 mdt_object_som_enable(o, o->mot_ioepoch);
404 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
405 /* If recovery is needed, tell the client to perform GETATTR under
407 if (ret == MDT_IOEPOCH_GETATTR && recovery) {
408 struct mdt_body *rep;
409 rep = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
410 rep->valid |= OBD_MD_FLGETATTRLOCK;
416 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
421 * Close IOEpoch (opened file or MDS_FMODE_EPOCH state). It happens if:
422 * - a client closes the IOEpoch;
423 * - a client eviction occured.
425 * MDT_IOEPOCH_OPENED if the client does not close IOEpoch.
426 * MDT_IOEPOCH_CLOSED if the client closes IOEpoch.
427 * MDT_IOEPOCH_GETATTR if the client closes IOEpoch but another SOM attribute
430 static int mdt_ioepoch_close(struct mdt_thread_info *info, struct mdt_object *o)
432 struct ptlrpc_request *req = mdt_info_req(info);
435 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
436 !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
439 LASSERT(o->mot_ioepoch_count);
440 LASSERT(info->mti_ioepoch == NULL ||
441 info->mti_ioepoch->ioepoch == o->mot_ioepoch);
443 /* IOEpoch is closed only if client tells about it or eviction occures.
444 * In the replay case, always close the epoch. */
446 RETURN(mdt_ioepoch_close_on_eviction(info, o));
447 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
448 RETURN(mdt_ioepoch_close_on_replay(info, o));
449 if (info->mti_ioepoch->flags & MF_EPOCH_CLOSE)
450 RETURN(mdt_ioepoch_close_reg(info, o));
451 /* IO epoch is not closed. */
452 RETURN(MDT_IOEPOCH_OPENED);
456 * Close MDS_FMODE_SOM state, when IOEpoch is already closed and we are waiting
457 * for attribute update. It happens if:
458 * - SOM Attribute Update is obtained;
459 * - the client failed to obtain it and informs MDS about it;
460 * - a client eviction occured.
461 * Apply obtained attributes for the 1st case, wipe out the on-disk SOM
464 int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o)
466 struct ptlrpc_request *req = mdt_info_req(info);
468 int act = MDT_SOM_ENABLE;
472 LASSERT(!req || info->mti_ioepoch);
473 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
474 !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
477 /* No size whereas MF_SOM_CHANGE is set means client failed to
478 * obtain ost attributes, drop the SOM cache on disk if so. */
480 (info->mti_ioepoch &&
481 info->mti_ioepoch->flags & MF_SOM_CHANGE &&
482 !(info->mti_attr.ma_attr.la_valid & LA_SIZE)))
483 act = MDT_SOM_DISABLE;
485 cfs_mutex_lock(&o->mot_ioepoch_mutex);
486 /* Mark the object it is the recovery state if we failed to obtain
488 if (act == MDT_SOM_DISABLE)
489 o->mot_flags |= MOF_SOM_RECOV;
491 if (!mdt_ioepoch_opened(o)) {
492 ioepoch = info->mti_ioepoch ?
493 info->mti_ioepoch->ioepoch : o->mot_ioepoch;
495 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
496 rc = mdt_som_attr_set(info, o, ioepoch, act);
497 mdt_object_som_enable(o, ioepoch);
499 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
503 int mdt_write_read(struct mdt_object *o)
507 cfs_mutex_lock(&o->mot_ioepoch_mutex);
508 rc = o->mot_writecount;
509 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
513 int mdt_write_get(struct mdt_object *o)
517 cfs_mutex_lock(&o->mot_ioepoch_mutex);
518 if (o->mot_writecount < 0)
522 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
526 void mdt_write_put(struct mdt_object *o)
529 cfs_mutex_lock(&o->mot_ioepoch_mutex);
531 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
535 static int mdt_write_deny(struct mdt_object *o)
539 cfs_mutex_lock(&o->mot_ioepoch_mutex);
540 if (o->mot_writecount > 0)
544 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
548 static void mdt_write_allow(struct mdt_object *o)
551 cfs_mutex_lock(&o->mot_ioepoch_mutex);
553 cfs_mutex_unlock(&o->mot_ioepoch_mutex);
557 /* there can be no real transaction so prepare the fake one */
558 static void mdt_empty_transno(struct mdt_thread_info *info, int rc)
560 struct mdt_device *mdt = info->mti_mdt;
561 struct ptlrpc_request *req = mdt_info_req(info);
562 struct tg_export_data *ted;
563 struct lsd_client_data *lcd;
566 /* transaction has occurred already */
567 if (lustre_msg_get_transno(req->rq_repmsg) != 0)
570 cfs_spin_lock(&mdt->mdt_lut.lut_translock);
571 if (info->mti_transno == 0) {
572 info->mti_transno = ++ mdt->mdt_lut.lut_last_transno;
574 /* should be replay */
575 if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
576 mdt->mdt_lut.lut_last_transno = info->mti_transno;
578 cfs_spin_unlock(&mdt->mdt_lut.lut_translock);
580 CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n",
582 req->rq_export->exp_obd->obd_last_committed);
584 req->rq_transno = info->mti_transno;
585 lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
587 /* update lcd in memory only for resent cases */
588 ted = &req->rq_export->exp_target_data;
590 cfs_mutex_lock(&ted->ted_lcd_lock);
592 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
593 lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
594 if (info->mti_transno != 0)
595 lcd->lcd_last_close_transno = info->mti_transno;
596 lcd->lcd_last_close_xid = req->rq_xid;
597 lcd->lcd_last_close_result = rc;
599 /* VBR: save versions in last_rcvd for reconstruct. */
600 __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
602 lcd->lcd_pre_versions[0] = pre_versions[0];
603 lcd->lcd_pre_versions[1] = pre_versions[1];
604 lcd->lcd_pre_versions[2] = pre_versions[2];
605 lcd->lcd_pre_versions[3] = pre_versions[3];
607 if (info->mti_transno != 0)
608 lcd->lcd_last_transno = info->mti_transno;
609 lcd->lcd_last_xid = req->rq_xid;
610 lcd->lcd_last_result = rc;
611 lcd->lcd_last_data = info->mti_opdata;
613 cfs_mutex_unlock(&ted->ted_lcd_lock);
618 void mdt_mfd_set_mode(struct mdt_file_data *mfd, int mode)
620 LASSERT(mfd != NULL);
622 CDEBUG(D_HA, "Change mfd %p mode 0x%x->0x%x\n",
623 mfd, (unsigned int)mfd->mfd_mode, (unsigned int)mode);
625 mfd->mfd_mode = mode;
628 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
629 struct mdt_object *o, __u64 flags, int created)
631 struct ptlrpc_request *req = mdt_info_req(info);
632 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
633 struct mdt_file_data *mfd;
634 struct md_attr *ma = &info->mti_attr;
635 struct lu_attr *la = &ma->ma_attr;
636 struct mdt_body *repbody;
637 int rc = 0, isdir, isreg;
640 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
642 isreg = S_ISREG(la->la_mode);
643 isdir = S_ISDIR(la->la_mode);
644 if (isreg && !(ma->ma_valid & MA_LOV)) {
646 * No EA, check whether it is will set regEA and dirEA since in
647 * above attr get, these size might be zero, so reset it, to
648 * retrieve the MD after create obj.
650 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
653 /* in replay case, p == NULL */
654 rc = mdt_create_data(info, p, o);
659 CDEBUG(D_INODE, "after open, ma_valid bit = "LPX64" lmm_size = %d\n",
660 ma->ma_valid, ma->ma_lmm_size);
662 if (ma->ma_valid & MA_LOV) {
663 LASSERT(ma->ma_lmm_size != 0);
664 repbody->eadatasize = ma->ma_lmm_size;
666 repbody->valid |= OBD_MD_FLDIREA;
668 repbody->valid |= OBD_MD_FLEASIZE;
671 if (flags & FMODE_WRITE) {
672 rc = mdt_write_get(o);
674 mdt_ioepoch_open(info, o, created);
675 repbody->ioepoch = o->mot_ioepoch;
677 } else if (flags & MDS_FMODE_EXEC) {
678 rc = mdt_write_deny(o);
683 rc = mo_open(info->mti_env, mdt_object_child(o),
684 created ? flags | MDS_OPEN_CREATED : flags);
691 * Keep a reference on this object for this open, and is
692 * released by mdt_mfd_close().
694 mdt_object_get(info->mti_env, o);
697 * @flags is always not zero. At least it should be FMODE_READ,
698 * FMODE_WRITE or MDS_FMODE_EXEC.
703 mdt_mfd_set_mode(mfd, flags);
706 mfd->mfd_xid = req->rq_xid;
709 if (req_is_replay(req)) {
710 struct mdt_file_data *old_mfd;
711 /* Check wheather old cookie already exist in
712 * the list, becasue when do recovery, client
713 * might be disconnected from server, and
714 * restart replay, so there maybe some orphan
715 * mfd here, we should remove them */
716 LASSERT(info->mti_rr.rr_handle != NULL);
717 old_mfd = mdt_handle2mfd(info, info->mti_rr.rr_handle);
719 CDEBUG(D_HA, "del orph mfd %p fid=("DFID") "
720 "cookie=" LPX64"\n", mfd,
721 PFID(mdt_object_fid(mfd->mfd_object)),
722 info->mti_rr.rr_handle->cookie);
723 cfs_spin_lock(&med->med_open_lock);
724 class_handle_unhash(&old_mfd->mfd_handle);
725 cfs_list_del_init(&old_mfd->mfd_list);
726 cfs_spin_unlock(&med->med_open_lock);
727 /* no attr update for that close */
729 ma->ma_valid |= MA_FLAGS;
730 ma->ma_attr_flags |= MDS_RECOV_OPEN;
731 mdt_mfd_close(info, old_mfd);
732 ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
733 ma->ma_valid &= ~MA_FLAGS;
735 CDEBUG(D_HA, "Store old cookie "LPX64" in new mfd\n",
736 info->mti_rr.rr_handle->cookie);
737 mfd->mfd_old_handle.cookie =
738 info->mti_rr.rr_handle->cookie;
740 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
742 if (req->rq_export->exp_disconnected) {
743 cfs_spin_lock(&med->med_open_lock);
744 class_handle_unhash(&mfd->mfd_handle);
745 cfs_list_del_init(&mfd->mfd_list);
746 cfs_spin_unlock(&med->med_open_lock);
747 mdt_mfd_close(info, mfd);
749 cfs_spin_lock(&med->med_open_lock);
750 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
751 cfs_spin_unlock(&med->med_open_lock);
754 mdt_empty_transno(info, rc);
756 GOTO(err_out, rc = -ENOMEM);
762 if (flags & FMODE_WRITE)
763 /* XXX We also need to close io epoch here.
764 * See LU-1220 - green */
766 else if (flags & FMODE_EXEC)
771 int mdt_finish_open(struct mdt_thread_info *info,
772 struct mdt_object *p, struct mdt_object *o,
773 __u64 flags, int created, struct ldlm_reply *rep)
775 struct ptlrpc_request *req = mdt_info_req(info);
776 struct obd_export *exp = req->rq_export;
777 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
778 struct md_attr *ma = &info->mti_attr;
779 struct lu_attr *la = &ma->ma_attr;
780 struct mdt_file_data *mfd;
781 struct mdt_body *repbody;
783 int isreg, isdir, islnk;
787 LASSERT(ma->ma_valid & MA_INODE);
789 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
791 isreg = S_ISREG(la->la_mode);
792 isdir = S_ISDIR(la->la_mode);
793 islnk = S_ISLNK(la->la_mode);
794 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
796 if (exp_connect_rmtclient(exp)) {
797 void *buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
799 rc = mdt_pack_remote_perm(info, o, buf);
801 repbody->valid &= ~OBD_MD_FLRMTPERM;
802 repbody->aclsize = 0;
804 repbody->valid |= OBD_MD_FLRMTPERM;
805 repbody->aclsize = sizeof(struct mdt_remote_perm);
808 #ifdef CONFIG_FS_POSIX_ACL
809 else if (exp->exp_connect_flags & OBD_CONNECT_ACL) {
810 const struct lu_env *env = info->mti_env;
811 struct md_object *next = mdt_object_child(o);
812 struct lu_buf *buf = &info->mti_buf;
814 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
815 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
817 if (buf->lb_len > 0) {
818 rc = mo_xattr_get(env, next, buf,
819 XATTR_NAME_ACL_ACCESS);
821 if (rc == -ENODATA) {
822 repbody->aclsize = 0;
823 repbody->valid |= OBD_MD_FLACL;
825 } else if (rc == -EOPNOTSUPP) {
828 CERROR("got acl size: %d\n", rc);
831 repbody->aclsize = rc;
832 repbody->valid |= OBD_MD_FLACL;
839 if (info->mti_mdt->mdt_opts.mo_mds_capa &&
840 exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
841 struct lustre_capa *capa;
843 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
845 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
846 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
849 repbody->valid |= OBD_MD_FLMDSCAPA;
851 if (info->mti_mdt->mdt_opts.mo_oss_capa &&
852 exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA &&
853 S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) {
854 struct lustre_capa *capa;
856 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
858 capa->lc_opc = CAPA_OPC_OSS_DEFAULT | capa_open_opc(flags);
859 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
862 repbody->valid |= OBD_MD_FLOSSCAPA;
866 * If we are following a symlink, don't open; and do not return open
867 * handle for special nodes as client required.
869 if (islnk || (!isreg && !isdir &&
870 (req->rq_export->exp_connect_flags & OBD_CONNECT_NODEVOH))) {
871 lustre_msg_set_transno(req->rq_repmsg, 0);
875 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
878 * We need to return the existing object's fid back, so it is done here,
879 * after preparing the reply.
881 if (!created && (flags & MDS_OPEN_EXCL) && (flags & MDS_OPEN_CREAT))
884 /* This can't be done earlier, we need to return reply body */
886 if (flags & (MDS_OPEN_CREAT | FMODE_WRITE)) {
887 /* We are trying to create or write an existing dir. */
890 } else if (flags & MDS_OPEN_DIRECTORY)
893 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
894 OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE)) {
899 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
900 cfs_spin_lock(&med->med_open_lock);
901 cfs_list_for_each(t, &med->med_open_head) {
902 mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list);
903 if (mfd->mfd_xid == req->rq_xid) {
908 cfs_spin_unlock(&med->med_open_lock);
911 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
912 /*set repbody->ea_size for resent case*/
913 if (ma->ma_valid & MA_LOV) {
914 LASSERT(ma->ma_lmm_size != 0);
915 repbody->eadatasize = ma->ma_lmm_size;
917 repbody->valid |= OBD_MD_FLDIREA;
919 repbody->valid |= OBD_MD_FLEASIZE;
925 rc = mdt_mfd_open(info, p, o, flags, created);
929 extern void mdt_req_from_lcd(struct ptlrpc_request *req,
930 struct lsd_client_data *lcd);
932 void mdt_reconstruct_open(struct mdt_thread_info *info,
933 struct mdt_lock_handle *lhc)
935 const struct lu_env *env = info->mti_env;
936 struct mdt_device *mdt = info->mti_mdt;
937 struct req_capsule *pill = info->mti_pill;
938 struct ptlrpc_request *req = mdt_info_req(info);
939 struct tg_export_data *ted = &req->rq_export->exp_target_data;
940 struct lsd_client_data *lcd = ted->ted_lcd;
941 struct md_attr *ma = &info->mti_attr;
942 struct mdt_reint_record *rr = &info->mti_rr;
943 __u32 flags = info->mti_spec.sp_cr_flags;
944 struct ldlm_reply *ldlm_rep;
945 struct mdt_object *parent;
946 struct mdt_object *child;
947 struct mdt_body *repbody;
951 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
952 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
953 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
955 ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
956 ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD,
958 ma->ma_need = MA_INODE;
959 if (ma->ma_lmm_size > 0)
960 ma->ma_need |= MA_LOV;
964 mdt_req_from_lcd(req, lcd);
965 mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data);
967 CDEBUG(D_INODE, "This is reconstruct open: disp="LPX64", result=%d\n",
968 ldlm_rep->lock_policy_res1, req->rq_status);
970 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) &&
972 /* We did not create successfully, return error to client. */
973 GOTO(out, rc = req->rq_status);
975 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE)) {
976 struct obd_export *exp = req->rq_export;
978 * We failed after creation, but we do not know in which step
979 * we failed. So try to check the child object.
981 parent = mdt_object_find(env, mdt, rr->rr_fid1);
982 if (IS_ERR(parent)) {
983 rc = PTR_ERR(parent);
984 LCONSOLE_WARN("Parent "DFID" lookup error %d."
985 " Evicting client %s with export %s.\n",
986 PFID(rr->rr_fid1), rc,
987 obd_uuid2str(&exp->exp_client_uuid),
988 obd_export_nid2str(exp));
989 mdt_export_evict(exp);
992 child = mdt_object_find(env, mdt, rr->rr_fid2);
995 LCONSOLE_WARN("Child "DFID" lookup error %d."
996 " Evicting client %s with export %s.\n",
997 PFID(mdt_object_fid(child)), rc,
998 obd_uuid2str(&exp->exp_client_uuid),
999 obd_export_nid2str(exp));
1000 mdt_object_put(env, parent);
1001 mdt_export_evict(exp);
1004 rc = mdt_object_exists(child);
1006 struct md_object *next;
1008 mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
1009 next = mdt_object_child(child);
1010 rc = mo_attr_get(env, next, ma);
1012 rc = mdt_finish_open(info, parent, child,
1013 flags, 1, ldlm_rep);
1014 } else if (rc < 0) {
1015 /* the child object was created on remote server */
1016 repbody->fid1 = *rr->rr_fid2;
1017 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1019 } else if (rc == 0) {
1020 /* the child does not exist, we should do regular open */
1021 mdt_object_put(env, parent);
1022 mdt_object_put(env, child);
1023 GOTO(regular_open, 0);
1025 mdt_object_put(env, parent);
1026 mdt_object_put(env, child);
1030 /* We did not try to create, so we are a pure open */
1031 rc = mdt_reint_open(info, lhc);
1036 req->rq_status = rc;
1037 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
1038 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
1041 int mdt_open_by_fid(struct mdt_thread_info* info,
1042 struct ldlm_reply *rep)
1044 const struct lu_env *env = info->mti_env;
1045 __u32 flags = info->mti_spec.sp_cr_flags;
1046 struct mdt_reint_record *rr = &info->mti_rr;
1047 struct md_attr *ma = &info->mti_attr;
1048 struct mdt_object *o;
1052 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
1054 RETURN(rc = PTR_ERR(o));
1056 rc = mdt_object_exists(o);
1058 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1062 rc = mo_attr_get(env, mdt_object_child(o), ma);
1064 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1065 } else if (rc == 0) {
1068 /* the child object was created on remote server */
1069 struct mdt_body *repbody;
1070 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1071 repbody->fid1 = *rr->rr_fid2;
1072 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1076 mdt_object_put(info->mti_env, o);
1080 int mdt_open_anon_by_fid(struct mdt_thread_info *info,
1081 struct ldlm_reply *rep,
1082 struct mdt_lock_handle *lhc)
1084 const struct lu_env *env = info->mti_env;
1085 struct mdt_device *mdt = info->mti_mdt;
1086 __u32 flags = info->mti_spec.sp_cr_flags;
1087 struct mdt_reint_record *rr = &info->mti_rr;
1088 struct md_attr *ma = &info->mti_attr;
1089 struct mdt_object *parent= NULL;
1090 struct mdt_object *o;
1095 if (md_should_create(flags)) {
1096 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1097 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1098 if (IS_ERR(parent)) {
1099 CDEBUG(D_INODE, "Fail to find parent "DFID
1100 " for anonymous created %ld, try to"
1101 " use server-side parent.\n",
1102 PFID(rr->rr_fid1), PTR_ERR(parent));
1107 ma->ma_need |= MA_PFID;
1110 o = mdt_object_find(env, mdt, rr->rr_fid2);
1112 RETURN(rc = PTR_ERR(o));
1114 rc = mdt_object_exists(o);
1116 mdt_set_disposition(info, rep, (DISP_LOOKUP_EXECD |
1118 GOTO(out, rc = -ENOENT);
1119 } else if (rc < 0) {
1120 CERROR("NFS remote open shouldn't happen.\n");
1123 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1127 if (flags & FMODE_WRITE)
1129 else if (flags & MDS_FMODE_EXEC)
1134 mdt_lock_handle_init(lhc);
1135 mdt_lock_reg_init(lhc, lm);
1136 rc = mdt_object_lock(info, o, lhc,
1137 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN,
1142 rc = mo_attr_get(env, mdt_object_child(o), ma);
1146 if (ma->ma_valid & MA_PFID) {
1147 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1148 if (IS_ERR(parent)) {
1149 CDEBUG(D_INODE, "Fail to find parent "DFID
1150 " for anonymous created %ld, try to"
1151 " use system default.\n",
1152 PFID(&ma->ma_pfid), PTR_ERR(parent));
1157 if (flags & MDS_OPEN_LOCK)
1158 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1159 rc = mdt_finish_open(info, parent, o, flags, 0, rep);
1161 if (!(flags & MDS_OPEN_LOCK) || rc)
1162 mdt_object_unlock(info, o, lhc, 1);
1166 mdt_object_put(env, o);
1168 mdt_object_put(env, parent);
1172 int mdt_pin(struct mdt_thread_info* info)
1175 RETURN(err_serious(-EOPNOTSUPP));
1178 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1179 int mdt_cross_open(struct mdt_thread_info* info,
1180 const struct lu_fid *fid,
1181 struct ldlm_reply *rep, __u32 flags)
1183 struct md_attr *ma = &info->mti_attr;
1184 struct mdt_object *o;
1188 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1190 RETURN(rc = PTR_ERR(o));
1192 rc = mdt_object_exists(o);
1194 /* Do permission check for cross-open. */
1195 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o),
1196 NULL, flags | MDS_OPEN_CROSS);
1200 mdt_set_capainfo(info, 0, fid, BYPASS_CAPA);
1201 rc = mo_attr_get(info->mti_env, mdt_object_child(o), ma);
1203 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1204 } else if (rc == 0) {
1206 * Something is wrong here. lookup was positive but there is
1209 CERROR("Cross-ref object doesn't exist!\n");
1212 /* Something is wrong here, the object is on another MDS! */
1213 CERROR("The object isn't on this server! FLD error?\n");
1214 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1216 "Object isn't on this server! FLD error?\n");
1222 mdt_object_put(info->mti_env, o);
1226 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1228 struct mdt_device *mdt = info->mti_mdt;
1229 struct ptlrpc_request *req = mdt_info_req(info);
1230 struct mdt_object *parent;
1231 struct mdt_object *child;
1232 struct mdt_lock_handle *lh;
1233 struct ldlm_reply *ldlm_rep;
1234 struct mdt_body *repbody;
1235 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1236 struct md_attr *ma = &info->mti_attr;
1237 __u64 create_flags = info->mti_spec.sp_cr_flags;
1238 struct mdt_reint_record *rr = &info->mti_rr;
1239 struct lu_name *lname;
1245 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1246 (obd_timeout + 1) / 4);
1248 mdt_counter_incr(req->rq_export, LPROC_MDT_OPEN);
1249 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1251 ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
1252 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD,
1254 ma->ma_need = MA_INODE;
1255 if (ma->ma_lmm_size > 0)
1256 ma->ma_need |= MA_LOV;
1260 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1261 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1263 if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) {
1264 CERROR("file join is not supported anymore.\n");
1265 GOTO(out, result = err_serious(-EOPNOTSUPP));
1267 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1269 if ((create_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1270 info->mti_spec.u.sp_ea.eadata == NULL)
1271 GOTO(out, result = err_serious(-EINVAL));
1273 CDEBUG(D_INODE, "I am going to open "DFID"/(%s->"DFID") "
1274 "cr_flag="LPO64" mode=0%06o msg_flag=0x%x\n",
1275 PFID(rr->rr_fid1), rr->rr_name,
1276 PFID(rr->rr_fid2), create_flags,
1277 ma->ma_attr.la_mode, msg_flags);
1279 if (req_is_replay(req) ||
1280 (req->rq_export->exp_libclient && create_flags&MDS_OPEN_HAS_EA)) {
1281 /* This is a replay request or from liblustre with ea. */
1282 result = mdt_open_by_fid(info, ldlm_rep);
1284 if (result != -ENOENT) {
1285 if (req->rq_export->exp_libclient &&
1286 create_flags & MDS_OPEN_HAS_EA)
1287 GOTO(out, result = 0);
1291 * We didn't find the correct object, so we need to re-create it
1292 * via a regular replay.
1294 if (!(create_flags & MDS_OPEN_CREAT)) {
1295 DEBUG_REQ(D_ERROR, req,
1296 "OPEN & CREAT not in open replay.");
1297 GOTO(out, result = -EFAULT);
1299 CDEBUG(D_INFO, "Open replay did find object, continue as "
1301 } else if (rr->rr_namelen == 0 && !info->mti_cross_ref &&
1302 create_flags & MDS_OPEN_LOCK) {
1303 result = mdt_open_anon_by_fid(info, ldlm_rep, lhc);
1307 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1308 GOTO(out, result = err_serious(-ENOMEM));
1310 mdt_set_disposition(info, ldlm_rep,
1311 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1313 if (info->mti_cross_ref) {
1314 /* This is cross-ref open */
1315 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1316 result = mdt_cross_open(info, rr->rr_fid1, ldlm_rep,
1321 lh = &info->mti_lh[MDT_LH_PARENT];
1322 mdt_lock_pdo_init(lh, (create_flags & MDS_OPEN_CREAT) ?
1323 LCK_PW : LCK_PR, rr->rr_name, rr->rr_namelen);
1325 parent = mdt_object_find_lock(info, rr->rr_fid1, lh,
1326 MDS_INODELOCK_UPDATE);
1328 GOTO(out, result = PTR_ERR(parent));
1330 /* get and check version of parent */
1331 result = mdt_version_get_check(info, parent, 0);
1333 GOTO(out_parent, result);
1335 fid_zero(child_fid);
1337 lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen);
1338 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1339 lname, child_fid, &info->mti_spec);
1340 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1341 "looking for "DFID"/%s, result fid="DFID"\n",
1342 PFID(mdt_object_fid(parent)), rr->rr_name, PFID(child_fid));
1344 if (result != 0 && result != -ENOENT && result != -ESTALE)
1345 GOTO(out_parent, result);
1347 if (result == -ENOENT || result == -ESTALE) {
1348 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1349 if (result == -ESTALE) {
1351 * -ESTALE means the parent is a dead(unlinked) dir, so
1352 * it should return -ENOENT to in accordance with the
1353 * original mds implementaion.
1355 GOTO(out_parent, result = -ENOENT);
1357 if (!(create_flags & MDS_OPEN_CREAT))
1358 GOTO(out_parent, result);
1359 *child_fid = *info->mti_rr.rr_fid2;
1360 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1364 * Check for O_EXCL is moved to the mdt_finish_open(), we need to
1365 * return FID back in that case.
1367 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1370 child = mdt_object_find(info->mti_env, mdt, child_fid);
1372 GOTO(out_parent, result = PTR_ERR(child));
1374 /** check version of child */
1375 rc = mdt_version_get_check(info, child, 1);
1377 GOTO(out_child, result = rc);
1379 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1380 if (result == -ENOENT) {
1381 if (mdt_object_obf(parent))
1382 GOTO(out_child, result = -EPERM);
1384 /* save versions in reply */
1385 mdt_version_get_save(info, parent, 0);
1386 mdt_version_get_save(info, child, 1);
1388 /* version of child will be changed */
1389 info->mti_mos = child;
1391 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1392 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1394 /* Let lower layers know what is lock mode on directory. */
1395 info->mti_spec.sp_cr_mode =
1396 mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
1399 * Do not perform lookup sanity check. We know that name does
1402 info->mti_spec.sp_cr_lookup = 0;
1403 info->mti_spec.sp_feat = &dt_directory_features;
1405 result = mdo_create(info->mti_env,
1406 mdt_object_child(parent),
1408 mdt_object_child(child),
1411 if (result == -ERESTART) {
1412 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1413 GOTO(out_child, result);
1416 GOTO(out_child, result);
1420 /* We have to get attr & lov ea for this object */
1421 result = mo_attr_get(info->mti_env, mdt_object_child(child),
1424 * The object is on remote node, return its FID for remote open.
1426 if (result == -EREMOTE) {
1428 * Check if this lock already was sent to client and
1429 * this is resent case. For resent case do not take lock
1430 * again, use what is already granted.
1432 LASSERT(lhc != NULL);
1434 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1435 struct ldlm_lock *lock;
1437 LASSERT(msg_flags & MSG_RESENT);
1439 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1441 CERROR("Invalid lock handle "LPX64"\n",
1442 lhc->mlh_reg_lh.cookie);
1445 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1446 &lock->l_resource->lr_name));
1447 LDLM_LOCK_PUT(lock);
1450 mdt_lock_handle_init(lhc);
1451 mdt_lock_reg_init(lhc, LCK_PR);
1453 rc = mdt_object_lock(info, child, lhc,
1454 MDS_INODELOCK_LOOKUP,
1457 repbody->fid1 = *mdt_object_fid(child);
1458 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1461 GOTO(out_child, result);
1465 LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh));
1467 /* get openlock if this is not replay and if a client requested it */
1468 if (!req_is_replay(req) && create_flags & MDS_OPEN_LOCK) {
1471 if (create_flags & FMODE_WRITE)
1473 else if (create_flags & MDS_FMODE_EXEC)
1477 mdt_lock_handle_init(lhc);
1478 mdt_lock_reg_init(lhc, lm);
1479 rc = mdt_object_lock(info, child, lhc,
1480 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN,
1484 GOTO(out_child, result);
1487 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1491 /* Try to open it now. */
1492 rc = mdt_finish_open(info, parent, child, create_flags,
1496 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
1497 /* openlock was acquired and mdt_finish_open failed -
1498 drop the openlock */
1499 mdt_object_unlock(info, child, lhc, 1);
1503 ma->ma_cookie_size = 0;
1504 info->mti_no_need_trans = 1;
1505 rc = mdo_unlink(info->mti_env,
1506 mdt_object_child(parent),
1507 mdt_object_child(child),
1511 CERROR("Error in cleanup of open\n");
1516 mdt_object_put(info->mti_env, child);
1518 mdt_object_unlock_put(info, parent, lh, result || !created);
1520 if (result && result != -EREMOTE)
1521 lustre_msg_set_transno(req->rq_repmsg, 0);
1525 #define MFD_CLOSED(mode) (((mode) & ~(MDS_FMODE_EPOCH | MDS_FMODE_SOM | \
1526 MDS_FMODE_TRUNC)) == MDS_FMODE_CLOSED)
1528 static int mdt_mfd_closed(struct mdt_file_data *mfd)
1530 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_mode));
1533 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
1535 struct mdt_object *o = mfd->mfd_object;
1536 struct md_object *next = mdt_object_child(o);
1537 struct md_attr *ma = &info->mti_attr;
1538 int ret = MDT_IOEPOCH_CLOSED;
1543 mode = mfd->mfd_mode;
1545 if ((mode & FMODE_WRITE) || (mode & MDS_FMODE_TRUNC)) {
1547 ret = mdt_ioepoch_close(info, o);
1548 } else if (mode & MDS_FMODE_EXEC) {
1550 } else if (mode & MDS_FMODE_EPOCH) {
1551 ret = mdt_ioepoch_close(info, o);
1552 } else if (mode & MDS_FMODE_SOM) {
1553 ret = mdt_som_au_close(info, o);
1556 /* Update atime on close only. */
1557 if ((mode & MDS_FMODE_EXEC || mode & FMODE_READ || mode & FMODE_WRITE)
1558 && (ma->ma_valid & MA_INODE) && (ma->ma_attr.la_valid & LA_ATIME)) {
1559 /* Set the atime only. */
1560 ma->ma_valid = MA_INODE;
1561 ma->ma_attr.la_valid = LA_ATIME;
1562 rc = mo_attr_set(info->mti_env, next, ma);
1565 ma->ma_need |= MA_INODE;
1566 ma->ma_valid &= ~MA_INODE;
1568 if (!MFD_CLOSED(mode))
1569 rc = mo_close(info->mti_env, next, ma, mode);
1571 if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) {
1572 struct mdt_export_data *med;
1574 /* The IOepoch is still opened or SOM update is needed.
1575 * Put mfd back into the list. */
1576 LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
1577 mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ?
1578 MDS_FMODE_EPOCH : MDS_FMODE_SOM);
1580 LASSERT(mdt_info_req(info));
1581 med = &mdt_info_req(info)->rq_export->exp_mdt_data;
1582 cfs_spin_lock(&med->med_open_lock);
1583 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
1584 class_handle_hash_back(&mfd->mfd_handle);
1585 cfs_spin_unlock(&med->med_open_lock);
1587 if (ret == MDT_IOEPOCH_OPENED) {
1591 CDEBUG(D_INODE, "Size-on-MDS attribute update is "
1592 "needed on "DFID"\n", PFID(mdt_object_fid(o)));
1596 mdt_object_put(info->mti_env, o);
1599 RETURN(rc ? rc : ret);
1602 int mdt_close(struct mdt_thread_info *info)
1604 struct mdt_export_data *med;
1605 struct mdt_file_data *mfd;
1606 struct mdt_object *o;
1607 struct md_attr *ma = &info->mti_attr;
1608 struct mdt_body *repbody = NULL;
1609 struct ptlrpc_request *req = mdt_info_req(info);
1613 mdt_counter_incr(req->rq_export, LPROC_MDT_CLOSE);
1614 /* Close may come with the Size-on-MDS update. Unpack it. */
1615 rc = mdt_close_unpack(info);
1617 RETURN(err_serious(rc));
1619 LASSERT(info->mti_ioepoch);
1621 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
1622 info->mti_mdt->mdt_max_mdsize);
1623 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
1624 info->mti_mdt->mdt_max_cookiesize);
1625 rc = req_capsule_server_pack(info->mti_pill);
1626 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
1627 mdt_client_compatibility(info);
1629 mdt_fix_reply(info);
1630 RETURN(lustre_msg_get_status(req->rq_repmsg));
1633 /* Continue to close handle even if we can not pack reply */
1635 repbody = req_capsule_server_get(info->mti_pill,
1637 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
1639 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
1642 ma->ma_cookie = req_capsule_server_get(info->mti_pill,
1644 ma->ma_cookie_size = req_capsule_get_size(info->mti_pill,
1647 ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE;
1648 repbody->eadatasize = 0;
1649 repbody->aclsize = 0;
1651 rc = err_serious(rc);
1654 med = &req->rq_export->exp_mdt_data;
1655 cfs_spin_lock(&med->med_open_lock);
1656 mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
1657 if (mdt_mfd_closed(mfd)) {
1658 cfs_spin_unlock(&med->med_open_lock);
1659 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
1660 ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1),
1661 info->mti_ioepoch->handle.cookie);
1662 /** not serious error since bug 3633 */
1665 class_handle_unhash(&mfd->mfd_handle);
1666 cfs_list_del_init(&mfd->mfd_list);
1667 cfs_spin_unlock(&med->med_open_lock);
1669 /* Do not lose object before last unlink. */
1670 o = mfd->mfd_object;
1671 mdt_object_get(info->mti_env, o);
1672 ret = mdt_mfd_close(info, mfd);
1673 if (repbody != NULL)
1674 rc = mdt_handle_last_unlink(info, o, ma);
1675 mdt_empty_transno(info, rc);
1676 mdt_object_put(info->mti_env, o);
1678 if (repbody != NULL) {
1679 mdt_client_compatibility(info);
1680 rc = mdt_fix_reply(info);
1683 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
1684 RETURN(err_serious(-ENOMEM));
1686 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
1687 OBD_FAIL_MDS_CLOSE_NET_REP))
1688 info->mti_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
1689 RETURN(rc ? rc : ret);
1693 * DONE_WRITING rpc handler.
1695 * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()),
1696 * only those DONE_WRITING rpc will be replayed which really wrote smth on disk,
1697 * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just
1698 * skip attributes and reconstruct the reply here.
1700 int mdt_done_writing(struct mdt_thread_info *info)
1702 struct ptlrpc_request *req = mdt_info_req(info);
1703 struct mdt_body *repbody = NULL;
1704 struct mdt_export_data *med;
1705 struct mdt_file_data *mfd;
1709 rc = req_capsule_server_pack(info->mti_pill);
1711 RETURN(err_serious(rc));
1713 repbody = req_capsule_server_get(info->mti_pill,
1715 repbody->eadatasize = 0;
1716 repbody->aclsize = 0;
1718 /* Done Writing may come with the Size-on-MDS update. Unpack it. */
1719 rc = mdt_close_unpack(info);
1721 RETURN(err_serious(rc));
1723 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL))
1724 RETURN(lustre_msg_get_status(req->rq_repmsg));
1726 med = &info->mti_exp->exp_mdt_data;
1727 cfs_spin_lock(&med->med_open_lock);
1728 mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
1730 cfs_spin_unlock(&med->med_open_lock);
1731 CDEBUG(D_INODE, "no handle for done write: fid = "DFID
1732 ": cookie = "LPX64" ioepoch = "LPU64"\n",
1733 PFID(info->mti_rr.rr_fid1),
1734 info->mti_ioepoch->handle.cookie,
1735 info->mti_ioepoch->ioepoch);
1736 /* If this is a replay, reconstruct the transno. */
1737 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
1738 rc = info->mti_ioepoch->flags & MF_SOM_AU ?
1740 mdt_empty_transno(info, rc);
1746 LASSERT(mfd->mfd_mode == MDS_FMODE_EPOCH ||
1747 mfd->mfd_mode == MDS_FMODE_TRUNC);
1748 class_handle_unhash(&mfd->mfd_handle);
1749 cfs_list_del_init(&mfd->mfd_list);
1750 cfs_spin_unlock(&med->med_open_lock);
1752 /* Set EPOCH CLOSE flag if not set by client. */
1753 info->mti_ioepoch->flags |= MF_EPOCH_CLOSE;
1754 info->mti_attr.ma_valid = 0;
1756 info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
1757 OBD_ALLOC_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
1758 if (info->mti_attr.ma_lmm == NULL)
1761 rc = mdt_mfd_close(info, mfd);
1763 OBD_FREE_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
1764 mdt_empty_transno(info, rc);