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, 2013, Intel Corporation.
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>
43 #define DEBUG_SUBSYSTEM S_MDS
45 #include <lustre_acl.h>
46 #include <lustre_mds.h>
47 #include "mdt_internal.h"
49 /* we do nothing because we do not have refcount now */
50 static void mdt_mfd_get(void *mfdp)
54 static struct portals_handle_ops mfd_handle_ops = {
55 .hop_addref = mdt_mfd_get,
59 /* Create a new mdt_file_data struct, initialize it,
60 * and insert it to global hash table */
61 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med)
63 struct mdt_file_data *mfd;
68 CFS_INIT_LIST_HEAD(&mfd->mfd_handle.h_link);
69 mfd->mfd_handle.h_owner = med;
70 CFS_INIT_LIST_HEAD(&mfd->mfd_list);
71 class_handle_hash(&mfd->mfd_handle, &mfd_handle_ops);
78 * Find the mfd pointed to by handle in global hash table.
79 * In case of replay the handle is obsoleted
80 * but mfd can be found in mfd list by that handle
82 struct mdt_file_data *mdt_handle2mfd(struct mdt_export_data *med,
83 const struct lustre_handle *handle,
84 bool is_replay_or_resent)
86 struct mdt_file_data *mfd;
89 LASSERT(handle != NULL);
90 mfd = class_handle2object(handle->cookie, med);
91 /* during dw/setattr replay the mfd can be found by old handle */
92 if (mfd == NULL && is_replay_or_resent) {
93 cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
94 if (mfd->mfd_old_handle.cookie == handle->cookie)
104 void mdt_mfd_free(struct mdt_file_data *mfd)
106 LASSERT(cfs_list_empty(&mfd->mfd_list));
107 OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle);
110 static int mdt_create_data(struct mdt_thread_info *info,
111 struct mdt_object *p, struct mdt_object *o)
113 struct md_op_spec *spec = &info->mti_spec;
114 struct md_attr *ma = &info->mti_attr;
118 if (!md_should_create(spec->sp_cr_flags))
121 ma->ma_need = MA_INODE | MA_LOV;
123 mutex_lock(&o->mot_lov_mutex);
124 if (!(o->mot_flags & MOF_LOV_CREATED)) {
125 if (p != NULL && (fid_is_obf(mdt_object_fid(p)) ||
126 fid_is_dot_lustre(mdt_object_fid(p))))
127 GOTO(unlock, rc = -EPERM);
129 rc = mdo_create_data(info->mti_env,
130 p ? mdt_object_child(p) : NULL,
131 mdt_object_child(o), spec, ma);
133 rc = mdt_attr_get_complex(info, o, ma);
135 if (rc == 0 && ma->ma_valid & MA_LOV)
136 o->mot_flags |= MOF_LOV_CREATED;
139 mutex_unlock(&o->mot_lov_mutex);
143 static int mdt_ioepoch_opened(struct mdt_object *mo)
145 return mo->mot_ioepoch_count;
148 int mdt_object_is_som_enabled(struct mdt_object *mo)
150 return !mo->mot_ioepoch;
154 * Re-enable Size-on-MDS.
155 * Call under ->mot_ioepoch_mutex.
157 static void mdt_object_som_enable(struct mdt_object *mo, __u64 ioepoch)
159 if (ioepoch == mo->mot_ioepoch) {
160 LASSERT(!mdt_ioepoch_opened(mo));
167 * Open the IOEpoch. It is allowed if @writecount is not negative.
168 * The epoch and writecount handling is performed under the mot_ioepoch_mutex.
170 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
173 struct mdt_device *mdt = info->mti_mdt;
178 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
179 !S_ISREG(lu_object_attr(&o->mot_obj)))
182 mutex_lock(&o->mot_ioepoch_mutex);
183 if (mdt_ioepoch_opened(o)) {
184 /* Epoch continues even if there is no writers yet. */
185 CDEBUG(D_INODE, "continue epoch "LPU64" for "DFID"\n",
186 o->mot_ioepoch, PFID(mdt_object_fid(o)));
188 /* XXX: ->mdt_ioepoch is not initialized at the mount */
189 spin_lock(&mdt->mdt_ioepoch_lock);
190 if (mdt->mdt_ioepoch < info->mti_replayepoch)
191 mdt->mdt_ioepoch = info->mti_replayepoch;
193 if (info->mti_replayepoch)
194 o->mot_ioepoch = info->mti_replayepoch;
195 else if (++mdt->mdt_ioepoch == IOEPOCH_INVAL)
196 o->mot_ioepoch = ++mdt->mdt_ioepoch;
198 o->mot_ioepoch = mdt->mdt_ioepoch;
200 spin_unlock(&mdt->mdt_ioepoch_lock);
202 CDEBUG(D_INODE, "starting epoch "LPU64" for "DFID"\n",
203 o->mot_ioepoch, PFID(mdt_object_fid(o)));
205 o->mot_flags |= MOF_SOM_CREATED;
208 o->mot_ioepoch_count++;
209 mutex_unlock(&o->mot_ioepoch_mutex);
211 /* Cancel Size-on-MDS attributes cached on clients for the open case.
212 * In the truncate case, see mdt_reint_setattr(). */
213 if (cancel && (info->mti_rr.rr_fid1 != NULL)) {
214 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_CHILD];
215 mdt_lock_reg_init(lh, LCK_EX);
216 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_UPDATE,
219 mdt_object_unlock(info, o, lh, 1);
225 * Update SOM on-disk attributes.
226 * If enabling, write update inodes and lustre-ea with the proper IOEpoch,
227 * mountid and attributes. If disabling, clean SOM xattr.
228 * Call under ->mot_ioepoch_mutex.
230 static int mdt_som_attr_set(struct mdt_thread_info *info,
231 struct mdt_object *obj, __u64 ioepoch, bool enable)
233 struct md_object *next = mdt_object_child(obj);
237 CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64
238 " on "DFID".\n", enable ? "update" : "disabling",
239 ioepoch, PFID(mdt_object_fid(obj)));
242 struct lu_buf *buf = &info->mti_buf;
243 struct som_attrs *attrs;
244 struct md_attr *ma = &info->mti_attr;
245 struct lu_attr *la = &ma->ma_attr;
246 struct obd_device *obd = info->mti_mdt->mdt_lut.lut_obd;
248 attrs = (struct som_attrs *)info->mti_xattr_buf;
249 CLASSERT(sizeof(info->mti_xattr_buf) >= sizeof(*attrs));
251 /* pack SOM attributes */
252 memset(attrs, 0, sizeof(*attrs));
253 attrs->som_ioepoch = ioepoch;
254 attrs->som_mountid = obd->u.obt.obt_mount_count;
255 if ((la->la_valid & LA_SIZE) != 0)
256 attrs->som_size = la->la_size;
257 if ((la->la_valid & LA_BLOCKS) != 0)
258 attrs->som_blocks = la->la_blocks;
259 lustre_som_swab(attrs);
261 /* update SOM attributes */
263 buf->lb_len = sizeof(*attrs);
264 rc = mo_xattr_set(info->mti_env, next, buf, XATTR_NAME_SOM, 0);
266 /* delete SOM attributes */
267 rc = mo_xattr_del(info->mti_env, next, XATTR_NAME_SOM);
273 /** Perform the eviction specific actions on ioepoch close. */
274 static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info,
275 struct mdt_object *o)
279 mutex_lock(&o->mot_ioepoch_mutex);
280 CDEBUG(D_INODE, "Eviction. Closing IOepoch "LPU64" on "DFID". "
281 "Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)),
282 o->mot_ioepoch_count);
283 o->mot_ioepoch_count--;
285 /* If eviction occured set MOF_SOM_RECOV,
286 * if no other epoch holders, disable SOM on disk. */
287 o->mot_flags |= MOF_SOM_CHANGE | MOF_SOM_RECOV;
288 if (!mdt_ioepoch_opened(o)) {
289 rc = mdt_som_attr_set(info, o, o->mot_ioepoch, MDT_SOM_DISABLE);
290 mdt_object_som_enable(o, o->mot_ioepoch);
292 mutex_unlock(&o->mot_ioepoch_mutex);
297 * Perform the replay specific actions on ioepoch close.
298 * Skip SOM attribute update if obtained and just forget about the inode state
299 * for the last ioepoch holder. The SOM cache is invalidated on MDS failure.
301 static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info,
302 struct mdt_object *o)
304 int rc = MDT_IOEPOCH_CLOSED;
307 mutex_lock(&o->mot_ioepoch_mutex);
308 CDEBUG(D_INODE, "Replay. Closing epoch "LPU64" on "DFID". Count %d\n",
309 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
310 o->mot_ioepoch_count--;
312 /* Get an info from the replayed request if client is supposed
313 * to send an Attibute Update, reconstruct @rc if so */
314 if (info->mti_ioepoch->flags & MF_SOM_AU)
315 rc = MDT_IOEPOCH_GETATTR;
317 if (!mdt_ioepoch_opened(o))
318 mdt_object_som_enable(o, info->mti_ioepoch->ioepoch);
319 mutex_unlock(&o->mot_ioepoch_mutex);
325 * Regular file IOepoch close.
326 * Closes the ioepoch, checks the object state, apply obtained attributes and
327 * re-enable SOM on the object, if possible. Also checks if the recovery is
328 * needed and packs OBD_MD_FLGETATTRLOCK flag into the reply to force the client
329 * to obtain SOM attributes under the server-side OST locks.
332 * MDT_IOEPOCH_CLOSED if ioepoch is closed.
333 * MDT_IOEPOCH_GETATTR if ioepoch is closed but another SOM update is needed.
335 static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info,
336 struct mdt_object *o)
338 struct md_attr *tmp_ma;
342 int rc = 0, ret = MDT_IOEPOCH_CLOSED;
345 la = &info->mti_attr.ma_attr;
346 achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE);
348 mutex_lock(&o->mot_ioepoch_mutex);
349 o->mot_ioepoch_count--;
351 tmp_ma = &info->mti_u.som.attr;
352 tmp_ma->ma_lmm = info->mti_attr.ma_lmm;
353 tmp_ma->ma_lmm_size = info->mti_attr.ma_lmm_size;
354 tmp_ma->ma_som = &info->mti_u.som.data;
355 tmp_ma->ma_need = MA_INODE | MA_LOV | MA_SOM;
356 tmp_ma->ma_valid = 0;
357 rc = mdt_attr_get_complex(info, o, tmp_ma);
361 /* Check the on-disk SOM state. */
362 if (o->mot_flags & MOF_SOM_RECOV)
364 else if (!(o->mot_flags & MOF_SOM_CREATED) &&
365 !(tmp_ma->ma_valid & MA_SOM))
368 CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
369 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
371 opened = mdt_ioepoch_opened(o);
373 * If IOEpoch is not opened, check if a Size-on-MDS update is needed.
374 * Skip the check for file with no LOV or for unlink files.
376 if (!opened && tmp_ma->ma_valid & MA_LOV &&
377 !(tmp_ma->ma_valid & MA_INODE && tmp_ma->ma_attr.la_nlink == 0)) {
379 /* If some previous writer was evicted, re-ask the
380 * client for attributes. Even if attributes are
381 * provided, we cannot believe in them.
382 * Another use case is that there is no SOM cache on
383 * disk -- first access with SOM or there was an MDS
385 ret = MDT_IOEPOCH_GETATTR;
386 else if (o->mot_flags & MOF_SOM_CHANGE)
387 /* Some previous writer changed the attribute.
388 * Do not believe to the current Size-on-MDS
389 * update, re-ask client. */
390 ret = MDT_IOEPOCH_GETATTR;
391 else if (!(la->la_valid & LA_SIZE) && achange)
392 /* Attributes were changed by the last writer
393 * only but no Size-on-MDS update is received.*/
394 ret = MDT_IOEPOCH_GETATTR;
397 if (achange || ret == MDT_IOEPOCH_GETATTR)
398 o->mot_flags |= MOF_SOM_CHANGE;
400 /* If epoch ends and relable SOM attributes are obtained, update them.
401 * Create SOM ea for new files even if there is no attributes obtained
402 * (0-length file). */
403 if (ret == MDT_IOEPOCH_CLOSED && !opened) {
404 if (achange || o->mot_flags & MOF_SOM_CREATED) {
405 LASSERT(achange || !(la->la_valid & LA_SIZE));
406 rc = mdt_som_attr_set(info, o, o->mot_ioepoch,
408 /* Avoid the following setattrs of these attributes,
409 * e.g. for atime update. */
410 info->mti_attr.ma_valid = 0;
412 mdt_object_som_enable(o, o->mot_ioepoch);
415 mutex_unlock(&o->mot_ioepoch_mutex);
416 /* If recovery is needed, tell the client to perform GETATTR under
418 if (ret == MDT_IOEPOCH_GETATTR && recovery) {
419 struct mdt_body *rep;
420 rep = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
421 rep->valid |= OBD_MD_FLGETATTRLOCK;
427 mutex_unlock(&o->mot_ioepoch_mutex);
432 * Close IOEpoch (opened file or MDS_FMODE_EPOCH state). It happens if:
433 * - a client closes the IOEpoch;
434 * - a client eviction occured.
436 * MDT_IOEPOCH_OPENED if the client does not close IOEpoch.
437 * MDT_IOEPOCH_CLOSED if the client closes IOEpoch.
438 * MDT_IOEPOCH_GETATTR if the client closes IOEpoch but another SOM attribute
441 static int mdt_ioepoch_close(struct mdt_thread_info *info, struct mdt_object *o)
443 struct ptlrpc_request *req = mdt_info_req(info);
446 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
447 !S_ISREG(lu_object_attr(&o->mot_obj)))
450 LASSERT(o->mot_ioepoch_count);
451 LASSERT(info->mti_ioepoch == NULL ||
452 info->mti_ioepoch->ioepoch == o->mot_ioepoch);
454 /* IOEpoch is closed only if client tells about it or eviction occures.
455 * In the replay case, always close the epoch. */
457 RETURN(mdt_ioepoch_close_on_eviction(info, o));
458 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
459 RETURN(mdt_ioepoch_close_on_replay(info, o));
460 if (info->mti_ioepoch->flags & MF_EPOCH_CLOSE)
461 RETURN(mdt_ioepoch_close_reg(info, o));
462 /* IO epoch is not closed. */
463 RETURN(MDT_IOEPOCH_OPENED);
467 * Close MDS_FMODE_SOM state, when IOEpoch is already closed and we are waiting
468 * for attribute update. It happens if:
469 * - SOM Attribute Update is obtained;
470 * - the client failed to obtain it and informs MDS about it;
471 * - a client eviction occured.
472 * Apply obtained attributes for the 1st case, wipe out the on-disk SOM
475 int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o)
477 struct ptlrpc_request *req = mdt_info_req(info);
479 int act = MDT_SOM_ENABLE;
483 LASSERT(!req || info->mti_ioepoch);
484 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
485 !S_ISREG(lu_object_attr(&o->mot_obj)))
488 /* No size whereas MF_SOM_CHANGE is set means client failed to
489 * obtain ost attributes, drop the SOM cache on disk if so. */
491 (info->mti_ioepoch &&
492 info->mti_ioepoch->flags & MF_SOM_CHANGE &&
493 !(info->mti_attr.ma_attr.la_valid & LA_SIZE)))
494 act = MDT_SOM_DISABLE;
496 mutex_lock(&o->mot_ioepoch_mutex);
497 /* Mark the object it is the recovery state if we failed to obtain
499 if (act == MDT_SOM_DISABLE)
500 o->mot_flags |= MOF_SOM_RECOV;
502 if (!mdt_ioepoch_opened(o)) {
503 ioepoch = info->mti_ioepoch ?
504 info->mti_ioepoch->ioepoch : o->mot_ioepoch;
506 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
507 rc = mdt_som_attr_set(info, o, ioepoch, act);
508 mdt_object_som_enable(o, ioepoch);
510 mutex_unlock(&o->mot_ioepoch_mutex);
514 int mdt_write_read(struct mdt_object *o)
518 mutex_lock(&o->mot_ioepoch_mutex);
519 rc = o->mot_writecount;
520 mutex_unlock(&o->mot_ioepoch_mutex);
524 int mdt_write_get(struct mdt_object *o)
528 mutex_lock(&o->mot_ioepoch_mutex);
529 if (o->mot_writecount < 0)
533 mutex_unlock(&o->mot_ioepoch_mutex);
537 void mdt_write_put(struct mdt_object *o)
540 mutex_lock(&o->mot_ioepoch_mutex);
542 mutex_unlock(&o->mot_ioepoch_mutex);
546 static int mdt_write_deny(struct mdt_object *o)
550 mutex_lock(&o->mot_ioepoch_mutex);
551 if (o->mot_writecount > 0)
555 mutex_unlock(&o->mot_ioepoch_mutex);
559 static void mdt_write_allow(struct mdt_object *o)
562 mutex_lock(&o->mot_ioepoch_mutex);
564 mutex_unlock(&o->mot_ioepoch_mutex);
568 /* there can be no real transaction so prepare the fake one */
569 static void mdt_empty_transno(struct mdt_thread_info *info, int rc)
571 struct mdt_device *mdt = info->mti_mdt;
572 struct ptlrpc_request *req = mdt_info_req(info);
573 struct tg_export_data *ted;
574 struct lsd_client_data *lcd;
577 /* transaction has occurred already */
578 if (lustre_msg_get_transno(req->rq_repmsg) != 0)
581 spin_lock(&mdt->mdt_lut.lut_translock);
583 if (info->mti_transno != 0) {
584 struct obd_export *exp = req->rq_export;
586 CERROR("%s: replay trans "LPU64" NID %s: rc = %d\n",
587 mdt_obd_name(mdt), info->mti_transno,
588 libcfs_nid2str(exp->exp_connection->c_peer.nid),
590 spin_unlock(&mdt->mdt_lut.lut_translock);
593 } else if (info->mti_transno == 0) {
594 info->mti_transno = ++mdt->mdt_lut.lut_last_transno;
596 /* should be replay */
597 if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
598 mdt->mdt_lut.lut_last_transno = info->mti_transno;
600 spin_unlock(&mdt->mdt_lut.lut_translock);
602 CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n",
604 req->rq_export->exp_obd->obd_last_committed);
606 req->rq_transno = info->mti_transno;
607 lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
609 /* update lcd in memory only for resent cases */
610 ted = &req->rq_export->exp_target_data;
612 mutex_lock(&ted->ted_lcd_lock);
614 if (info->mti_transno < lcd->lcd_last_transno &&
615 info->mti_transno != 0) {
616 /* This should happen during replay. Do not update
617 * last rcvd info if replay req transno < last transno,
618 * otherwise the following resend(after replay) can not
619 * be checked correctly by xid */
620 mutex_unlock(&ted->ted_lcd_lock);
621 CDEBUG(D_HA, "%s: transno = "LPU64" < last_transno = "LPU64"\n",
622 mdt_obd_name(mdt), info->mti_transno,
623 lcd->lcd_last_transno);
627 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
628 lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
629 if (info->mti_transno != 0)
630 lcd->lcd_last_close_transno = info->mti_transno;
631 lcd->lcd_last_close_xid = req->rq_xid;
632 lcd->lcd_last_close_result = rc;
634 /* VBR: save versions in last_rcvd for reconstruct. */
635 __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
637 lcd->lcd_pre_versions[0] = pre_versions[0];
638 lcd->lcd_pre_versions[1] = pre_versions[1];
639 lcd->lcd_pre_versions[2] = pre_versions[2];
640 lcd->lcd_pre_versions[3] = pre_versions[3];
642 if (info->mti_transno != 0)
643 lcd->lcd_last_transno = info->mti_transno;
645 lcd->lcd_last_xid = req->rq_xid;
646 lcd->lcd_last_result = rc;
647 lcd->lcd_last_data = info->mti_opdata;
649 mutex_unlock(&ted->ted_lcd_lock);
654 void mdt_mfd_set_mode(struct mdt_file_data *mfd, __u64 mode)
656 LASSERT(mfd != NULL);
658 CDEBUG(D_HA, DFID "Change mfd mode 0x%Lx->0x%Lx\n",
659 PFID(mdt_object_fid(mfd->mfd_object)), mfd->mfd_mode, mode);
661 mfd->mfd_mode = mode;
664 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
665 struct mdt_object *o, __u64 flags, int created)
667 struct ptlrpc_request *req = mdt_info_req(info);
668 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
669 struct mdt_file_data *mfd;
670 struct md_attr *ma = &info->mti_attr;
671 struct lu_attr *la = &ma->ma_attr;
672 struct mdt_body *repbody;
673 int rc = 0, isdir, isreg;
676 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
678 isreg = S_ISREG(la->la_mode);
679 isdir = S_ISDIR(la->la_mode);
680 if (isreg && !(ma->ma_valid & MA_LOV)) {
682 * No EA, check whether it is will set regEA and dirEA since in
683 * above attr get, these size might be zero, so reset it, to
684 * retrieve the MD after create obj.
686 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
689 /* in replay case, p == NULL */
690 rc = mdt_create_data(info, p, o);
695 CDEBUG(D_INODE, "after open, ma_valid bit = "LPX64" lmm_size = %d\n",
696 ma->ma_valid, ma->ma_lmm_size);
698 if (ma->ma_valid & MA_LOV) {
699 LASSERT(ma->ma_lmm_size != 0);
700 repbody->eadatasize = ma->ma_lmm_size;
702 repbody->valid |= OBD_MD_FLDIREA;
704 repbody->valid |= OBD_MD_FLEASIZE;
707 if (flags & FMODE_WRITE) {
708 rc = mdt_write_get(o);
710 mdt_ioepoch_open(info, o, created);
711 repbody->ioepoch = o->mot_ioepoch;
713 } else if (flags & MDS_FMODE_EXEC) {
714 /* if file is released, we can't deny write because we must
715 * restore (write) it to access it.*/
716 if ((ma->ma_valid & MA_HSM) &&
717 (ma->ma_hsm.mh_flags & HS_RELEASED))
720 rc = mdt_write_deny(o);
725 rc = mo_open(info->mti_env, mdt_object_child(o),
726 created ? flags | MDS_OPEN_CREATED : flags);
730 mfd = mdt_mfd_new(med);
732 GOTO(err_out, rc = -ENOMEM);
735 * Keep a reference on this object for this open, and is
736 * released by mdt_mfd_close().
738 mdt_object_get(info->mti_env, o);
740 mfd->mfd_xid = req->rq_xid;
743 * @flags is always not zero. At least it should be FMODE_READ,
744 * FMODE_WRITE or MDS_FMODE_EXEC.
749 mdt_mfd_set_mode(mfd, flags);
751 atomic_inc(&o->mot_open_count);
752 if (flags & MDS_OPEN_LEASE)
753 atomic_inc(&o->mot_lease_count);
756 if (req_is_replay(req)) {
757 struct mdt_file_data *old_mfd;
758 /* Check wheather old cookie already exist in
759 * the list, becasue when do recovery, client
760 * might be disconnected from server, and
761 * restart replay, so there maybe some orphan
762 * mfd here, we should remove them */
763 LASSERT(info->mti_rr.rr_handle != NULL);
764 old_mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle, true);
765 if (old_mfd != NULL) {
766 CDEBUG(D_HA, "delete orphan mfd = %p, fid = "DFID", "
767 "cookie = "LPX64"\n", mfd,
768 PFID(mdt_object_fid(mfd->mfd_object)),
769 info->mti_rr.rr_handle->cookie);
770 spin_lock(&med->med_open_lock);
771 class_handle_unhash(&old_mfd->mfd_handle);
772 cfs_list_del_init(&old_mfd->mfd_list);
773 spin_unlock(&med->med_open_lock);
774 /* no attr update for that close */
776 ma->ma_valid |= MA_FLAGS;
777 ma->ma_attr_flags |= MDS_RECOV_OPEN;
778 mdt_mfd_close(info, old_mfd);
779 ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
780 ma->ma_valid &= ~MA_FLAGS;
783 CDEBUG(D_HA, "Store old cookie "LPX64" in new mfd\n",
784 info->mti_rr.rr_handle->cookie);
786 mfd->mfd_old_handle.cookie = info->mti_rr.rr_handle->cookie;
789 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
791 if (req->rq_export->exp_disconnected) {
792 spin_lock(&med->med_open_lock);
793 class_handle_unhash(&mfd->mfd_handle);
794 cfs_list_del_init(&mfd->mfd_list);
795 spin_unlock(&med->med_open_lock);
796 mdt_mfd_close(info, mfd);
798 spin_lock(&med->med_open_lock);
799 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
800 spin_unlock(&med->med_open_lock);
803 mdt_empty_transno(info, rc);
808 if (flags & FMODE_WRITE)
809 /* XXX We also need to close io epoch here.
810 * See LU-1220 - green */
812 else if (flags & FMODE_EXEC)
817 int mdt_finish_open(struct mdt_thread_info *info,
818 struct mdt_object *p, struct mdt_object *o,
819 __u64 flags, int created, struct ldlm_reply *rep)
821 struct ptlrpc_request *req = mdt_info_req(info);
822 struct obd_export *exp = req->rq_export;
823 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
824 struct md_attr *ma = &info->mti_attr;
825 struct lu_attr *la = &ma->ma_attr;
826 struct mdt_file_data *mfd;
827 struct mdt_body *repbody;
829 int isreg, isdir, islnk;
833 LASSERT(ma->ma_valid & MA_INODE);
835 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
837 isreg = S_ISREG(la->la_mode);
838 isdir = S_ISDIR(la->la_mode);
839 islnk = S_ISLNK(la->la_mode);
840 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
842 /* LU-2275, simulate broken behaviour (esp. prevalent in
843 * pre-2.4 servers where a very strange reply is sent on error
844 * that looks like it was actually almost succesful and a failure at the
846 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) {
847 mdt_set_disposition(info, rep, DISP_OPEN_OPEN |
851 if (flags & MDS_OPEN_LOCK)
852 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
857 if (exp_connect_rmtclient(exp)) {
858 void *buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
860 rc = mdt_pack_remote_perm(info, o, buf);
862 repbody->valid &= ~OBD_MD_FLRMTPERM;
863 repbody->aclsize = 0;
865 repbody->valid |= OBD_MD_FLRMTPERM;
866 repbody->aclsize = sizeof(struct mdt_remote_perm);
869 #ifdef CONFIG_FS_POSIX_ACL
870 else if (exp_connect_flags(exp) & OBD_CONNECT_ACL) {
871 const struct lu_env *env = info->mti_env;
872 struct md_object *next = mdt_object_child(o);
873 struct lu_buf *buf = &info->mti_buf;
875 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
876 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
878 if (buf->lb_len > 0) {
879 rc = mo_xattr_get(env, next, buf,
880 XATTR_NAME_ACL_ACCESS);
882 if (rc == -ENODATA) {
883 repbody->aclsize = 0;
884 repbody->valid |= OBD_MD_FLACL;
886 } else if (rc == -EOPNOTSUPP) {
889 CERROR("got acl size: %d\n", rc);
892 repbody->aclsize = rc;
893 repbody->valid |= OBD_MD_FLACL;
900 if (info->mti_mdt->mdt_opts.mo_mds_capa &&
901 exp_connect_flags(exp) & OBD_CONNECT_MDS_CAPA) {
902 struct lustre_capa *capa;
904 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
906 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
907 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
910 repbody->valid |= OBD_MD_FLMDSCAPA;
913 if (info->mti_mdt->mdt_opts.mo_oss_capa &&
914 exp_connect_flags(exp) & OBD_CONNECT_OSS_CAPA &&
915 S_ISREG(lu_object_attr(&o->mot_obj))) {
916 struct lustre_capa *capa;
918 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
920 capa->lc_opc = CAPA_OPC_OSS_DEFAULT | capa_open_opc(flags);
921 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
924 repbody->valid |= OBD_MD_FLOSSCAPA;
928 * If we are following a symlink, don't open; and do not return open
929 * handle for special nodes as client required.
931 if (islnk || (!isreg && !isdir &&
932 (exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) {
933 lustre_msg_set_transno(req->rq_repmsg, 0);
938 * We need to return the existing object's fid back, so it is done here,
939 * after preparing the reply.
941 if (!created && (flags & MDS_OPEN_EXCL) && (flags & MDS_OPEN_CREAT))
944 /* This can't be done earlier, we need to return reply body */
946 if (flags & (MDS_OPEN_CREAT | FMODE_WRITE)) {
947 /* We are trying to create or write an existing dir. */
950 } else if (flags & MDS_OPEN_DIRECTORY)
953 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
954 OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE)) {
959 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
960 spin_lock(&med->med_open_lock);
961 cfs_list_for_each(t, &med->med_open_head) {
962 mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list);
963 if (mfd->mfd_xid == req->rq_xid)
967 spin_unlock(&med->med_open_lock);
970 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
971 /*set repbody->ea_size for resent case*/
972 if (ma->ma_valid & MA_LOV) {
973 LASSERT(ma->ma_lmm_size != 0);
974 repbody->eadatasize = ma->ma_lmm_size;
976 repbody->valid |= OBD_MD_FLDIREA;
978 repbody->valid |= OBD_MD_FLEASIZE;
980 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
985 rc = mdt_mfd_open(info, p, o, flags, created);
987 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
992 extern void mdt_req_from_lcd(struct ptlrpc_request *req,
993 struct lsd_client_data *lcd);
995 void mdt_reconstruct_open(struct mdt_thread_info *info,
996 struct mdt_lock_handle *lhc)
998 const struct lu_env *env = info->mti_env;
999 struct mdt_device *mdt = info->mti_mdt;
1000 struct req_capsule *pill = info->mti_pill;
1001 struct ptlrpc_request *req = mdt_info_req(info);
1002 struct tg_export_data *ted = &req->rq_export->exp_target_data;
1003 struct lsd_client_data *lcd = ted->ted_lcd;
1004 struct md_attr *ma = &info->mti_attr;
1005 struct mdt_reint_record *rr = &info->mti_rr;
1006 __u32 flags = info->mti_spec.sp_cr_flags;
1007 struct ldlm_reply *ldlm_rep;
1008 struct mdt_object *parent;
1009 struct mdt_object *child;
1010 struct mdt_body *repbody;
1014 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1015 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
1016 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1018 ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
1019 ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD,
1021 ma->ma_need = MA_INODE | MA_HSM;
1022 if (ma->ma_lmm_size > 0)
1023 ma->ma_need |= MA_LOV;
1027 mdt_req_from_lcd(req, lcd);
1028 mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data);
1030 CDEBUG(D_INODE, "This is reconstruct open: disp="LPX64", result=%d\n",
1031 ldlm_rep->lock_policy_res1, req->rq_status);
1033 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) &&
1034 req->rq_status != 0)
1035 /* We did not create successfully, return error to client. */
1036 GOTO(out, rc = req->rq_status);
1038 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE)) {
1039 struct obd_export *exp = req->rq_export;
1041 * We failed after creation, but we do not know in which step
1042 * we failed. So try to check the child object.
1044 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1045 if (IS_ERR(parent)) {
1046 rc = PTR_ERR(parent);
1047 LCONSOLE_WARN("Parent "DFID" lookup error %d."
1048 " Evicting client %s with export %s.\n",
1049 PFID(rr->rr_fid1), rc,
1050 obd_uuid2str(&exp->exp_client_uuid),
1051 obd_export_nid2str(exp));
1052 mdt_export_evict(exp);
1055 child = mdt_object_find(env, mdt, rr->rr_fid2);
1056 if (IS_ERR(child)) {
1057 rc = PTR_ERR(child);
1058 LCONSOLE_WARN("Child "DFID" lookup error %d."
1059 " Evicting client %s with export %s.\n",
1060 PFID(mdt_object_fid(child)), rc,
1061 obd_uuid2str(&exp->exp_client_uuid),
1062 obd_export_nid2str(exp));
1063 mdt_object_put(env, parent);
1064 mdt_export_evict(exp);
1068 if (unlikely(mdt_object_remote(child))) {
1069 /* the child object was created on remote server */
1070 if (!mdt_is_dne_client(exp)) {
1071 /* Return -EIO for old client */
1072 mdt_object_put(env, parent);
1073 mdt_object_put(env, child);
1074 GOTO(out, rc = -EIO);
1076 repbody->fid1 = *rr->rr_fid2;
1077 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1080 if (mdt_object_exists(child)) {
1081 mdt_set_capainfo(info, 1, rr->rr_fid2,
1083 rc = mdt_attr_get_complex(info, child, ma);
1085 rc = mdt_finish_open(info, parent,
1089 /* the child does not exist, we should do
1091 mdt_object_put(env, parent);
1092 mdt_object_put(env, child);
1093 GOTO(regular_open, 0);
1096 mdt_object_put(env, parent);
1097 mdt_object_put(env, child);
1101 /* We did not try to create, so we are a pure open */
1102 rc = mdt_reint_open(info, lhc);
1107 req->rq_status = rc;
1108 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
1109 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
1112 int mdt_open_by_fid(struct mdt_thread_info* info,
1113 struct ldlm_reply *rep)
1115 __u32 flags = info->mti_spec.sp_cr_flags;
1116 struct mdt_reint_record *rr = &info->mti_rr;
1117 struct md_attr *ma = &info->mti_attr;
1118 struct mdt_object *o;
1122 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
1124 RETURN(rc = PTR_ERR(o));
1126 if (unlikely(mdt_object_remote(o))) {
1127 /* the child object was created on remote server */
1128 struct mdt_body *repbody;
1130 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1133 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1134 repbody->fid1 = *rr->rr_fid2;
1135 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1138 if (mdt_object_exists(o)) {
1139 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1143 rc = mdt_attr_get_complex(info, o, ma);
1145 rc = mdt_finish_open(info, NULL, o, flags, 0,
1152 mdt_object_put(info->mti_env, o);
1156 /* lock object for open */
1157 static int mdt_object_open_lock(struct mdt_thread_info *info,
1158 struct mdt_object *obj,
1159 struct mdt_lock_handle *lhc,
1162 struct md_attr *ma = &info->mti_attr;
1163 __u64 open_flags = info->mti_spec.sp_cr_flags;
1164 ldlm_mode_t lm = LCK_CR;
1165 bool acq_lease = !!(open_flags & MDS_OPEN_LEASE);
1166 bool try_layout = false;
1167 bool create_layout = false;
1172 mdt_lock_handle_init(lhc);
1174 if (req_is_replay(mdt_info_req(info)))
1177 if (S_ISREG(lu_object_attr(&obj->mot_obj))) {
1178 if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) &&
1179 md_should_create(open_flags))
1180 create_layout = true;
1181 if (exp_connect_layout(info->mti_exp) && !create_layout &&
1182 ma->ma_need & MA_LOV)
1187 /* lease open, acquire write mode of open sem */
1188 down_write(&obj->mot_open_sem);
1190 /* Lease exists and ask for new lease */
1191 if (atomic_read(&obj->mot_lease_count) > 0) {
1192 /* only exclusive open is supported, so lease
1193 * are conflicted to each other */
1194 GOTO(out, rc = -EBUSY);
1197 /* Lease must be with open lock */
1198 if (!(open_flags & MDS_OPEN_LOCK)) {
1199 CERROR("Request lease for file:"DFID ", but open lock "
1200 "is missed, open_flags = "LPO64".\n",
1201 PFID(mdt_object_fid(obj)), open_flags);
1202 GOTO(out, rc = -EPROTO);
1205 /* XXX: only exclusive open is supported. */
1207 *ibits = MDS_INODELOCK_OPEN;
1209 /* never grant LCK_EX layout lock to client */
1211 } else { /* normal open */
1212 /* normal open holds read mode of open sem */
1213 down_read(&obj->mot_open_sem);
1215 if (open_flags & MDS_OPEN_LOCK) {
1216 if (open_flags & FMODE_WRITE)
1218 /* if file is released, we can't deny write because we must
1219 * restore (write) it to access it. */
1220 else if ((open_flags & MDS_FMODE_EXEC) &&
1221 !((ma->ma_valid & MA_HSM) &&
1222 (ma->ma_hsm.mh_flags & HS_RELEASED)))
1227 *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN;
1228 } else if (atomic_read(&obj->mot_lease_count) > 0) {
1229 if (open_flags & FMODE_WRITE)
1235 *ibits = MDS_INODELOCK_OPEN;
1238 lhc = &info->mti_lh[MDT_LH_LOCAL];
1240 CDEBUG(D_INODE, "normal open:"DFID" lease count: %d, lm: %d\n",
1241 PFID(mdt_object_fid(obj)),
1242 atomic_read(&obj->mot_open_count), lm);
1245 mdt_lock_reg_init(lhc, lm);
1247 /* one problem to return layout lock on open is that it may result
1248 * in too many layout locks cached on the client side. */
1249 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) {
1250 /* return lookup lock to validate inode at the client side,
1251 * this is pretty important otherwise mdt will return layout
1252 * lock for each open.
1253 * However this is a double-edged sword because changing
1254 * permission will revoke huge # of LOOKUP locks. */
1255 *ibits |= MDS_INODELOCK_LAYOUT | MDS_INODELOCK_LOOKUP;
1256 if (!mdt_object_lock_try(info, obj, lhc, *ibits,
1258 *ibits &= ~(MDS_INODELOCK_LAYOUT|MDS_INODELOCK_LOOKUP);
1260 rc = mdt_object_lock(info, obj, lhc, *ibits,
1263 } else if (*ibits != 0) {
1264 rc = mdt_object_lock(info, obj, lhc, *ibits, MDT_CROSS_LOCK);
1267 CDEBUG(D_INODE, "Requested bits lock:"DFID ", ibits = "LPX64
1268 ", open_flags = "LPO64", try_layout = %d, rc = %d\n",
1269 PFID(mdt_object_fid(obj)), *ibits, open_flags, try_layout, rc);
1271 /* will change layout, revoke layout locks by enqueuing EX lock. */
1272 if (rc == 0 && create_layout) {
1273 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
1275 CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID
1276 ", open_flags = "LPO64"\n",
1277 PFID(mdt_object_fid(obj)), open_flags);
1279 LASSERT(!try_layout);
1280 mdt_lock_handle_init(ll);
1281 mdt_lock_reg_init(ll, LCK_EX);
1282 rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT,
1285 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2);
1288 /* Check if there is any other open handles after acquiring
1289 * open lock. At this point, caching open handles have been revoked
1291 * XXX: Now only exclusive open is supported. Need to check the
1292 * type of open for generic lease support. */
1293 if (rc == 0 && acq_lease) {
1294 struct ptlrpc_request *req = mdt_info_req(info);
1295 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
1296 struct mdt_file_data *mfd;
1297 bool is_replay_or_resent;
1300 /* For lease: application can open a file and then apply lease,
1301 * @handle contains original open handle in that case.
1302 * In recovery, open REQ will be replayed and the lease REQ may
1303 * be resent that means the open handle is already stale, so we
1304 * need to fix it up here by finding new handle. */
1305 is_replay_or_resent = req_is_replay(req) ||
1306 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT;
1308 /* if the request is _not_ a replay request, rr_handle
1309 * may be used to hold an openhandle which is issuing the
1310 * lease request, so that this openhandle doesn't count. */
1311 mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle,
1312 is_replay_or_resent);
1316 CDEBUG(D_INODE, "acq_lease "DFID": openers: %d, want: %d\n",
1317 PFID(mdt_object_fid(obj)),
1318 atomic_read(&obj->mot_open_count), open_count);
1320 if (atomic_read(&obj->mot_open_count) > open_count)
1321 GOTO(out, rc = -EBUSY);
1329 static void mdt_object_open_unlock(struct mdt_thread_info *info,
1330 struct mdt_object *obj,
1331 struct mdt_lock_handle *lhc,
1332 __u64 ibits, int rc)
1334 __u64 open_flags = info->mti_spec.sp_cr_flags;
1335 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LOCAL];
1338 if (req_is_replay(mdt_info_req(info)))
1341 /* Release local lock - the lock put in MDT_LH_LOCAL will never
1342 * return to client side. */
1343 if (lustre_handle_is_used(&ll->mlh_reg_lh))
1344 mdt_object_unlock(info, obj, ll, 1);
1346 ll = &info->mti_lh[MDT_LH_LAYOUT];
1347 /* Release local layout lock, layout was created */
1348 if (lustre_handle_is_used(&ll->mlh_reg_lh)) {
1349 LASSERT(!(ibits & MDS_INODELOCK_LAYOUT));
1350 mdt_object_unlock(info, obj, ll, 1);
1353 if (open_flags & MDS_OPEN_LEASE)
1354 up_write(&obj->mot_open_sem);
1356 up_read(&obj->mot_open_sem);
1358 /* Cross-ref case, the lock should be returned to the client */
1359 if (ibits == 0 || rc == -EREMOTE)
1362 if (!(open_flags & MDS_OPEN_LOCK) && !(ibits & MDS_INODELOCK_LAYOUT)) {
1363 /* for the open request, the lock will only return to client
1364 * if open or layout lock is granted. */
1369 struct ldlm_reply *ldlm_rep;
1371 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1372 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1373 mdt_object_unlock(info, obj, lhc, 1);
1378 int mdt_open_by_fid_lock(struct mdt_thread_info *info, struct ldlm_reply *rep,
1379 struct mdt_lock_handle *lhc)
1381 const struct lu_env *env = info->mti_env;
1382 struct mdt_device *mdt = info->mti_mdt;
1383 __u64 flags = info->mti_spec.sp_cr_flags;
1384 struct mdt_reint_record *rr = &info->mti_rr;
1385 struct md_attr *ma = &info->mti_attr;
1386 struct mdt_object *parent= NULL;
1387 struct mdt_object *o;
1392 if (md_should_create(flags) && !(flags & MDS_OPEN_HAS_EA)) {
1393 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1394 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1395 if (IS_ERR(parent)) {
1396 CDEBUG(D_INODE, "Fail to find parent "DFID
1397 " for anonymous created %ld, try to"
1398 " use server-side parent.\n",
1399 PFID(rr->rr_fid1), PTR_ERR(parent));
1404 ma->ma_need |= MA_PFID;
1407 o = mdt_object_find(env, mdt, rr->rr_fid2);
1409 RETURN(rc = PTR_ERR(o));
1411 if (mdt_object_remote(o)) {
1412 CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n",
1413 mdt_obd_name(info->mti_mdt),
1415 GOTO(out, rc = -EREMOTE);
1416 } else if (!mdt_object_exists(o)) {
1417 mdt_set_disposition(info, rep,
1421 GOTO(out, rc = -ENOENT);
1424 mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1426 rc = mdt_attr_get_complex(info, o, ma);
1430 rc = mdt_object_open_lock(info, o, lhc, &ibits);
1432 GOTO(out_unlock, rc);
1434 if (ma->ma_valid & MA_PFID) {
1435 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1436 if (IS_ERR(parent)) {
1437 CDEBUG(D_INODE, "Fail to find parent "DFID
1438 " for anonymous created %ld, try to"
1439 " use system default.\n",
1440 PFID(&ma->ma_pfid), PTR_ERR(parent));
1445 rc = mdt_finish_open(info, parent, o, flags, 0, rep);
1447 mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
1448 if (flags & MDS_OPEN_LOCK)
1449 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1450 if (flags & MDS_OPEN_LEASE)
1451 mdt_set_disposition(info, rep, DISP_OPEN_LEASE);
1453 GOTO(out_unlock, rc);
1456 mdt_object_open_unlock(info, o, lhc, ibits, rc);
1458 mdt_object_put(env, o);
1460 mdt_object_put(env, parent);
1464 int mdt_pin(struct mdt_thread_info* info)
1467 RETURN(err_serious(-EOPNOTSUPP));
1470 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1471 static int mdt_cross_open(struct mdt_thread_info *info,
1472 const struct lu_fid *parent_fid,
1473 const struct lu_fid *fid,
1474 struct ldlm_reply *rep, __u32 flags)
1476 struct md_attr *ma = &info->mti_attr;
1477 struct mdt_object *o;
1481 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1483 RETURN(rc = PTR_ERR(o));
1485 if (mdt_object_remote(o)) {
1486 /* Something is wrong here, the object is on another MDS! */
1487 CERROR("%s: "DFID" isn't on this server!: rc = %d\n",
1488 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1489 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1491 "Object isn't on this server! FLD error?\n");
1494 if (mdt_object_exists(o)) {
1495 /* Do permission check for cross-open. */
1496 rc = mo_permission(info->mti_env, NULL,
1497 mdt_object_child(o),
1498 NULL, flags | MDS_OPEN_CROSS);
1502 mdt_set_capainfo(info, 0, fid, BYPASS_CAPA);
1503 rc = mdt_attr_get_complex(info, o, ma);
1507 /* Do not create lov object if the fid is opened
1509 if (S_ISREG(ma->ma_attr.la_mode) &&
1510 !(ma->ma_valid & MA_LOV) && (flags & FMODE_WRITE) &&
1511 fid_is_obf(parent_fid))
1512 GOTO(out, rc = -EPERM);
1514 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1517 * Something is wrong here. lookup was positive but
1518 * there is no object!
1520 CERROR("%s: "DFID" doesn't exist!: rc = %d\n",
1521 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1526 mdt_object_put(info->mti_env, o);
1530 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1532 struct mdt_device *mdt = info->mti_mdt;
1533 struct ptlrpc_request *req = mdt_info_req(info);
1534 struct mdt_object *parent;
1535 struct mdt_object *child;
1536 struct mdt_lock_handle *lh;
1537 struct ldlm_reply *ldlm_rep;
1538 struct mdt_body *repbody;
1539 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1540 struct md_attr *ma = &info->mti_attr;
1541 __u64 create_flags = info->mti_spec.sp_cr_flags;
1543 struct mdt_reint_record *rr = &info->mti_rr;
1544 struct lu_name *lname;
1550 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1551 (obd_timeout + 1) / 4);
1553 mdt_counter_incr(req, LPROC_MDT_OPEN);
1554 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1556 ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
1557 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD,
1559 ma->ma_need = MA_INODE;
1560 if (ma->ma_lmm_size > 0)
1561 ma->ma_need |= MA_LOV;
1565 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1566 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1568 if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) {
1569 CERROR("file join is not supported anymore.\n");
1570 GOTO(out, result = err_serious(-EOPNOTSUPP));
1572 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1574 if ((create_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1575 info->mti_spec.u.sp_ea.eadata == NULL)
1576 GOTO(out, result = err_serious(-EINVAL));
1578 CDEBUG(D_INODE, "I am going to open "DFID"/(%s->"DFID") "
1579 "cr_flag="LPO64" mode=0%06o msg_flag=0x%x\n",
1580 PFID(rr->rr_fid1), rr->rr_name,
1581 PFID(rr->rr_fid2), create_flags,
1582 ma->ma_attr.la_mode, msg_flags);
1583 if (info->mti_cross_ref) {
1584 /* This is cross-ref open */
1585 mdt_set_disposition(info, ldlm_rep,
1586 (DISP_IT_EXECD | DISP_LOOKUP_EXECD |
1588 result = mdt_cross_open(info, rr->rr_fid2, rr->rr_fid1,
1589 ldlm_rep, create_flags);
1591 } else if (req_is_replay(req) ||
1592 (req->rq_export->exp_libclient && create_flags & MDS_OPEN_HAS_EA)) {
1593 /* This is a replay request or from liblustre with ea. */
1594 result = mdt_open_by_fid(info, ldlm_rep);
1596 if (result != -ENOENT) {
1597 if (req->rq_export->exp_libclient &&
1598 create_flags & MDS_OPEN_HAS_EA)
1599 GOTO(out, result = 0);
1602 /* We didn't find the correct object, so we need to re-create it
1603 * via a regular replay. */
1604 if (!(create_flags & MDS_OPEN_CREAT)) {
1605 DEBUG_REQ(D_ERROR, req,
1606 "OPEN & CREAT not in open replay/by_fid.");
1607 GOTO(out, result = -EFAULT);
1609 CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
1610 } else if ((rr->rr_namelen == 0 && create_flags & MDS_OPEN_LOCK) ||
1611 (create_flags & MDS_OPEN_BY_FID)) {
1612 result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
1613 /* If result is 0 then open by FID has found the file
1614 * and there is nothing left for us to do here. More
1615 * generally if it is anything other than -ENOENT or
1616 * -EREMOTE then we return that now. If -ENOENT and
1617 * MDS_OPEN_CREAT is set then we must create the file
1618 * below. If -EREMOTE then we need to return a LOOKUP
1619 * lock to the client, which we do below. Hence this
1620 * odd looking condition. See LU-2523. */
1621 if (!(result == -ENOENT && (create_flags & MDS_OPEN_CREAT)) &&
1625 if (unlikely(rr->rr_namelen == 0))
1626 GOTO(out, result = -EINVAL);
1628 CDEBUG(D_INFO, "No object(2), continue as regular open.\n");
1631 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1632 GOTO(out, result = err_serious(-ENOMEM));
1634 mdt_set_disposition(info, ldlm_rep,
1635 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1637 lh = &info->mti_lh[MDT_LH_PARENT];
1638 mdt_lock_pdo_init(lh, (create_flags & MDS_OPEN_CREAT) ?
1639 LCK_PW : LCK_PR, rr->rr_name, rr->rr_namelen);
1641 parent = mdt_object_find_lock(info, rr->rr_fid1, lh,
1642 MDS_INODELOCK_UPDATE);
1644 GOTO(out, result = PTR_ERR(parent));
1646 /* get and check version of parent */
1647 result = mdt_version_get_check(info, parent, 0);
1649 GOTO(out_parent, result);
1651 fid_zero(child_fid);
1653 lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen);
1654 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1655 lname, child_fid, &info->mti_spec);
1656 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1657 "looking for "DFID"/%s, result fid="DFID"\n",
1658 PFID(mdt_object_fid(parent)), rr->rr_name, PFID(child_fid));
1660 if (result != 0 && result != -ENOENT && result != -ESTALE)
1661 GOTO(out_parent, result);
1663 if (result == -ENOENT || result == -ESTALE) {
1664 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1665 if (result == -ESTALE) {
1667 * -ESTALE means the parent is a dead(unlinked) dir, so
1668 * it should return -ENOENT to in accordance with the
1669 * original mds implementaion.
1671 GOTO(out_parent, result = -ENOENT);
1673 if (!(create_flags & MDS_OPEN_CREAT))
1674 GOTO(out_parent, result);
1675 *child_fid = *info->mti_rr.rr_fid2;
1676 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1678 /* In the function below, .hs_keycmp resolves to
1679 * lu_obj_hop_keycmp() */
1680 /* coverity[overrun-buffer-val] */
1681 child = mdt_object_new(info->mti_env, mdt, child_fid);
1684 * Check for O_EXCL is moved to the mdt_finish_open(), we need to
1685 * return FID back in that case.
1687 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1688 child = mdt_object_find(info->mti_env, mdt, child_fid);
1691 GOTO(out_parent, result = PTR_ERR(child));
1693 /** check version of child */
1694 rc = mdt_version_get_check(info, child, 1);
1696 GOTO(out_child, result = rc);
1698 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1699 if (result == -ENOENT) {
1700 /* Create under OBF and .lustre is not permitted */
1701 if (fid_is_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1))
1702 GOTO(out_child, result = -EPERM);
1704 /* save versions in reply */
1705 mdt_version_get_save(info, parent, 0);
1706 mdt_version_get_save(info, child, 1);
1708 /* version of child will be changed */
1709 info->mti_mos = child;
1711 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1712 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1714 /* Let lower layers know what is lock mode on directory. */
1715 info->mti_spec.sp_cr_mode =
1716 mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
1719 * Do not perform lookup sanity check. We know that name does
1722 info->mti_spec.sp_cr_lookup = 0;
1723 info->mti_spec.sp_feat = &dt_directory_features;
1725 result = mdo_create(info->mti_env,
1726 mdt_object_child(parent),
1728 mdt_object_child(child),
1731 if (result == -ERESTART) {
1732 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1733 GOTO(out_child, result);
1736 /* XXX: we should call this once, see few lines below */
1738 result = mdt_attr_get_complex(info, child, ma);
1741 GOTO(out_child, result);
1746 * The object is on remote node, return its FID for remote open.
1748 if (mdt_object_remote(child)) {
1750 * Check if this lock already was sent to client and
1751 * this is resent case. For resent case do not take lock
1752 * again, use what is already granted.
1754 LASSERT(lhc != NULL);
1756 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1757 struct ldlm_lock *lock;
1759 LASSERT(msg_flags & MSG_RESENT);
1761 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1763 CERROR("Invalid lock handle "LPX64"\n",
1764 lhc->mlh_reg_lh.cookie);
1767 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1768 &lock->l_resource->lr_name));
1769 LDLM_LOCK_PUT(lock);
1772 mdt_lock_handle_init(lhc);
1773 mdt_lock_reg_init(lhc, LCK_PR);
1775 rc = mdt_object_lock(info, child, lhc,
1776 MDS_INODELOCK_LOOKUP,
1779 repbody->fid1 = *mdt_object_fid(child);
1780 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1785 GOTO(out_child, result);
1787 if (mdt_object_exists(child)) {
1788 /* We have to get attr & LOV EA & HSM for this
1790 ma->ma_need |= MA_HSM;
1791 result = mdt_attr_get_complex(info, child, ma);
1793 /*object non-exist!!!*/
1799 LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh));
1801 /* get openlock if this is not replay and if a client requested it */
1802 if (!req_is_replay(req)) {
1803 rc = mdt_object_open_lock(info, child, lhc, &ibits);
1805 GOTO(out_child_unlock, result = rc);
1806 else if (create_flags & MDS_OPEN_LOCK)
1807 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1810 /* Try to open it now. */
1811 rc = mdt_finish_open(info, parent, child, create_flags,
1815 /* openlock will be released if mdt_finish_open failed */
1816 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1820 ma->ma_cookie_size = 0;
1821 rc = mdo_unlink(info->mti_env,
1822 mdt_object_child(parent),
1823 mdt_object_child(child),
1825 &info->mti_attr, 0);
1827 CERROR("%s: "DFID" cleanup of open: rc = %d\n",
1828 mdt_obd_name(info->mti_mdt),
1829 PFID(mdt_object_fid(child)), rc);
1830 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1835 mdt_object_open_unlock(info, child, lhc, ibits, result);
1837 mdt_object_put(info->mti_env, child);
1839 mdt_object_unlock_put(info, parent, lh, result || !created);
1842 lustre_msg_set_transno(req->rq_repmsg, 0);
1846 #define MFD_CLOSED(mode) (((mode) & ~(MDS_FMODE_EPOCH | MDS_FMODE_SOM | \
1847 MDS_FMODE_TRUNC)) == MDS_FMODE_CLOSED)
1849 static int mdt_mfd_closed(struct mdt_file_data *mfd)
1851 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_mode));
1854 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
1856 struct mdt_object *o = mfd->mfd_object;
1857 struct md_object *next = mdt_object_child(o);
1858 struct md_attr *ma = &info->mti_attr;
1859 int ret = MDT_IOEPOCH_CLOSED;
1864 mode = mfd->mfd_mode;
1866 if ((mode & FMODE_WRITE) || (mode & MDS_FMODE_TRUNC)) {
1868 ret = mdt_ioepoch_close(info, o);
1869 } else if (mode & MDS_FMODE_EXEC) {
1871 } else if (mode & MDS_FMODE_EPOCH) {
1872 ret = mdt_ioepoch_close(info, o);
1873 } else if (mode & MDS_FMODE_SOM) {
1874 ret = mdt_som_au_close(info, o);
1877 /* Update atime on close only. */
1878 if ((mode & MDS_FMODE_EXEC || mode & FMODE_READ || mode & FMODE_WRITE)
1879 && (ma->ma_valid & MA_INODE) && (ma->ma_attr.la_valid & LA_ATIME)) {
1880 /* Set the atime only. */
1881 ma->ma_valid = MA_INODE;
1882 ma->ma_attr.la_valid = LA_ATIME;
1883 rc = mo_attr_set(info->mti_env, next, ma);
1886 /* If file data is modified, add the dirty flag.
1888 * If MDS_CLOSE_CLEANUP is set, this file is being closed due to an
1889 * eviction, file could have been modified and now dirty
1890 * regarding to HSM archive, check this!
1891 * The logic here is to mark a file dirty if there's a chance it was
1892 * dirtied before the client was evicted, so that we don't have to wait
1893 * for a release attempt before finding out the file was actually dirty
1894 * and fail the release. Aggressively marking it dirty here will cause
1895 * the policy engine to attempt to re-archive it; when rearchiving, we
1896 * can compare the current version to the LMA data_version and make the
1897 * archive request into a noop if it's not actually dirty.
1899 if ((ma->ma_attr_flags & MDS_DATA_MODIFIED) ||
1900 ((ma->ma_attr_flags & MDS_CLOSE_CLEANUP) &&
1901 (mode & (FMODE_WRITE|MDS_FMODE_TRUNC))))
1902 rc = mdt_add_dirty_flag(info, o, ma);
1904 ma->ma_need |= MA_INODE;
1905 ma->ma_valid &= ~MA_INODE;
1907 if (!MFD_CLOSED(mode))
1908 rc = mo_close(info->mti_env, next, ma, mode);
1910 if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) {
1911 struct mdt_export_data *med;
1913 /* The IOepoch is still opened or SOM update is needed.
1914 * Put mfd back into the list. */
1915 LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
1916 mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ?
1917 MDS_FMODE_EPOCH : MDS_FMODE_SOM);
1919 LASSERT(mdt_info_req(info));
1920 med = &mdt_info_req(info)->rq_export->exp_mdt_data;
1921 spin_lock(&med->med_open_lock);
1922 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
1923 class_handle_hash_back(&mfd->mfd_handle);
1924 spin_unlock(&med->med_open_lock);
1926 if (ret == MDT_IOEPOCH_OPENED) {
1930 CDEBUG(D_INODE, "Size-on-MDS attribute update is "
1931 "needed on "DFID"\n", PFID(mdt_object_fid(o)));
1934 /* adjust open and lease count */
1935 if (mode & MDS_OPEN_LEASE) {
1936 LASSERT(atomic_read(&o->mot_lease_count) > 0);
1937 atomic_dec(&o->mot_lease_count);
1939 LASSERT(atomic_read(&o->mot_open_count) > 0);
1940 atomic_dec(&o->mot_open_count);
1943 mdt_object_put(info->mti_env, o);
1946 RETURN(rc ? rc : ret);
1949 int mdt_close(struct mdt_thread_info *info)
1951 struct mdt_export_data *med;
1952 struct mdt_file_data *mfd;
1953 struct mdt_object *o;
1954 struct md_attr *ma = &info->mti_attr;
1955 struct mdt_body *repbody = NULL;
1956 struct ptlrpc_request *req = mdt_info_req(info);
1960 mdt_counter_incr(req, LPROC_MDT_CLOSE);
1961 /* Close may come with the Size-on-MDS update. Unpack it. */
1962 rc = mdt_close_unpack(info);
1964 RETURN(err_serious(rc));
1966 LASSERT(info->mti_ioepoch);
1968 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
1969 info->mti_mdt->mdt_max_mdsize);
1970 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
1971 info->mti_mdt->mdt_max_cookiesize);
1972 rc = req_capsule_server_pack(info->mti_pill);
1973 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
1974 mdt_client_compatibility(info);
1976 mdt_fix_reply(info);
1977 mdt_exit_ucred(info);
1978 RETURN(lustre_msg_get_status(req->rq_repmsg));
1981 /* Continue to close handle even if we can not pack reply */
1983 repbody = req_capsule_server_get(info->mti_pill,
1985 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
1987 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
1990 ma->ma_cookie = req_capsule_server_get(info->mti_pill,
1992 ma->ma_cookie_size = req_capsule_get_size(info->mti_pill,
1995 ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE;
1996 repbody->eadatasize = 0;
1997 repbody->aclsize = 0;
1999 rc = err_serious(rc);
2002 med = &req->rq_export->exp_mdt_data;
2003 spin_lock(&med->med_open_lock);
2004 mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
2005 req_is_replay(req));
2006 if (mdt_mfd_closed(mfd)) {
2007 spin_unlock(&med->med_open_lock);
2008 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
2009 ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1),
2010 info->mti_ioepoch->handle.cookie);
2011 /** not serious error since bug 3633 */
2014 class_handle_unhash(&mfd->mfd_handle);
2015 cfs_list_del_init(&mfd->mfd_list);
2016 spin_unlock(&med->med_open_lock);
2018 /* Do not lose object before last unlink. */
2019 o = mfd->mfd_object;
2020 mdt_object_get(info->mti_env, o);
2021 ret = mdt_mfd_close(info, mfd);
2022 if (repbody != NULL)
2023 rc = mdt_handle_last_unlink(info, o, ma);
2024 mdt_empty_transno(info, rc);
2025 mdt_object_put(info->mti_env, o);
2027 if (repbody != NULL) {
2028 mdt_client_compatibility(info);
2029 rc = mdt_fix_reply(info);
2032 mdt_exit_ucred(info);
2033 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
2034 RETURN(err_serious(-ENOMEM));
2036 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
2037 OBD_FAIL_MDS_CLOSE_NET_REP))
2038 info->mti_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
2039 RETURN(rc ? rc : ret);
2043 * DONE_WRITING rpc handler.
2045 * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()),
2046 * only those DONE_WRITING rpc will be replayed which really wrote smth on disk,
2047 * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just
2048 * skip attributes and reconstruct the reply here.
2050 int mdt_done_writing(struct mdt_thread_info *info)
2052 struct ptlrpc_request *req = mdt_info_req(info);
2053 struct mdt_body *repbody = NULL;
2054 struct mdt_export_data *med;
2055 struct mdt_file_data *mfd;
2059 rc = req_capsule_server_pack(info->mti_pill);
2061 RETURN(err_serious(rc));
2063 repbody = req_capsule_server_get(info->mti_pill,
2065 repbody->eadatasize = 0;
2066 repbody->aclsize = 0;
2068 /* Done Writing may come with the Size-on-MDS update. Unpack it. */
2069 rc = mdt_close_unpack(info);
2071 RETURN(err_serious(rc));
2073 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2074 mdt_exit_ucred(info);
2075 RETURN(lustre_msg_get_status(req->rq_repmsg));
2078 med = &info->mti_exp->exp_mdt_data;
2079 spin_lock(&med->med_open_lock);
2080 mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
2081 req_is_replay(req));
2083 spin_unlock(&med->med_open_lock);
2084 CDEBUG(D_INODE, "no handle for done write: fid = "DFID
2085 ": cookie = "LPX64" ioepoch = "LPU64"\n",
2086 PFID(info->mti_rr.rr_fid1),
2087 info->mti_ioepoch->handle.cookie,
2088 info->mti_ioepoch->ioepoch);
2089 /* If this is a replay, reconstruct the transno. */
2090 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
2091 rc = info->mti_ioepoch->flags & MF_SOM_AU ?
2093 mdt_empty_transno(info, rc);
2096 GOTO(error_ucred, rc);
2099 LASSERT(mfd->mfd_mode == MDS_FMODE_EPOCH ||
2100 mfd->mfd_mode == MDS_FMODE_TRUNC);
2101 class_handle_unhash(&mfd->mfd_handle);
2102 cfs_list_del_init(&mfd->mfd_list);
2103 spin_unlock(&med->med_open_lock);
2105 /* Set EPOCH CLOSE flag if not set by client. */
2106 info->mti_ioepoch->flags |= MF_EPOCH_CLOSE;
2107 info->mti_attr.ma_valid = 0;
2109 info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
2110 OBD_ALLOC_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
2111 if (info->mti_attr.ma_lmm == NULL)
2112 GOTO(error_ucred, rc = -ENOMEM);
2114 rc = mdt_mfd_close(info, mfd);
2116 OBD_FREE_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
2117 mdt_empty_transno(info, rc);
2119 mdt_exit_ucred(info);