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>
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(void)
63 struct mdt_file_data *mfd;
68 CFS_INIT_LIST_HEAD(&mfd->mfd_handle.h_link);
69 CFS_INIT_LIST_HEAD(&mfd->mfd_list);
70 class_handle_hash(&mfd->mfd_handle, &mfd_handle_ops);
76 * Find the mfd pointed to by handle in global hash table.
77 * In case of replay the handle is obsoleted
78 * but mfd can be found in mfd list by that handle
80 struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *info,
81 const struct lustre_handle *handle)
83 struct ptlrpc_request *req = mdt_info_req(info);
84 struct mdt_file_data *mfd;
87 LASSERT(handle != NULL);
88 mfd = class_handle2object(handle->cookie);
89 /* during dw/setattr replay the mfd can be found by old handle */
90 if (mfd == NULL && req_is_replay(req)) {
91 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
92 cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
93 if (mfd->mfd_old_handle.cookie == handle->cookie)
102 void mdt_mfd_free(struct mdt_file_data *mfd)
104 LASSERT(cfs_list_empty(&mfd->mfd_list));
105 OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle);
108 static int mdt_create_data(struct mdt_thread_info *info,
109 struct mdt_object *p, struct mdt_object *o)
111 struct md_op_spec *spec = &info->mti_spec;
112 struct md_attr *ma = &info->mti_attr;
116 if (!md_should_create(spec->sp_cr_flags))
119 ma->ma_need = MA_INODE | MA_LOV;
121 mutex_lock(&o->mot_lov_mutex);
122 if (!(o->mot_flags & MOF_LOV_CREATED)) {
123 rc = mdo_create_data(info->mti_env,
124 p ? mdt_object_child(p) : NULL,
125 mdt_object_child(o), spec, ma);
127 rc = mdt_attr_get_complex(info, o, ma);
129 if (rc == 0 && ma->ma_valid & MA_LOV)
130 o->mot_flags |= MOF_LOV_CREATED;
132 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 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 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 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 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 lustre_mdt_attrs *lma;
227 struct md_attr *ma = &info->mti_attr;
228 struct lu_buf *buf = &info->mti_buf;
229 struct md_object *next = mdt_object_child(obj);
230 struct mdt_device *mdt = info->mti_mdt;
231 struct lu_attr *la = &ma->ma_attr;
235 CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64
236 " on "DFID".\n", enable ? "update" : "disabling",
237 ioepoch, PFID(mdt_object_fid(obj)));
239 lma = (struct lustre_mdt_attrs *) info->mti_xattr_buf;
240 CLASSERT(sizeof(info->mti_xattr_buf) >= sizeof(*lma));
243 buf->lb_len = sizeof(info->mti_xattr_buf);
244 rc = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_LMA);
246 lustre_lma_swab(lma);
247 } else if (rc == -ENODATA) {
248 memset(lma, 0, sizeof(*lma));
254 memcpy(&lma->lma_self_fid, mdt_object_fid(obj), sizeof(lma->lma_self_fid));
257 lma->lma_ioepoch = ioepoch;
258 lma->lma_som_size = la->la_valid & LA_SIZE ? la->la_size : 0;
259 lma->lma_som_blocks = la->la_valid & LA_BLOCKS ? la->la_blocks : 0;
260 lma->lma_som_mountid = mdt->mdt_lut.lut_obd->u.obt.obt_mount_count;
262 lma->lma_compat |= LMAC_SOM;
264 lma->lma_compat &= ~LMAC_SOM;
266 rc = mo_xattr_set(info->mti_env, next, buf, XATTR_NAME_LMA, 0);
271 /** Perform the eviction specific actions on ioepoch close. */
272 static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info,
273 struct mdt_object *o)
277 mutex_lock(&o->mot_ioepoch_mutex);
278 CDEBUG(D_INODE, "Eviction. Closing IOepoch "LPU64" on "DFID". "
279 "Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)),
280 o->mot_ioepoch_count);
281 o->mot_ioepoch_count--;
283 /* If eviction occured set MOF_SOM_RECOV,
284 * if no other epoch holders, disable SOM on disk. */
285 o->mot_flags |= MOF_SOM_CHANGE | MOF_SOM_RECOV;
286 if (!mdt_ioepoch_opened(o)) {
287 rc = mdt_som_attr_set(info, o, o->mot_ioepoch, MDT_SOM_DISABLE);
288 mdt_object_som_enable(o, o->mot_ioepoch);
290 mutex_unlock(&o->mot_ioepoch_mutex);
295 * Perform the replay specific actions on ioepoch close.
296 * Skip SOM attribute update if obtained and just forget about the inode state
297 * for the last ioepoch holder. The SOM cache is invalidated on MDS failure.
299 static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info,
300 struct mdt_object *o)
302 int rc = MDT_IOEPOCH_CLOSED;
305 mutex_lock(&o->mot_ioepoch_mutex);
306 CDEBUG(D_INODE, "Replay. Closing epoch "LPU64" on "DFID". Count %d\n",
307 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
308 o->mot_ioepoch_count--;
310 /* Get an info from the replayed request if client is supposed
311 * to send an Attibute Update, reconstruct @rc if so */
312 if (info->mti_ioepoch->flags & MF_SOM_AU)
313 rc = MDT_IOEPOCH_GETATTR;
315 if (!mdt_ioepoch_opened(o))
316 mdt_object_som_enable(o, info->mti_ioepoch->ioepoch);
317 mutex_unlock(&o->mot_ioepoch_mutex);
323 * Regular file IOepoch close.
324 * Closes the ioepoch, checks the object state, apply obtained attributes and
325 * re-enable SOM on the object, if possible. Also checks if the recovery is
326 * needed and packs OBD_MD_FLGETATTRLOCK flag into the reply to force the client
327 * to obtain SOM attributes under the server-side OST locks.
330 * MDT_IOEPOCH_CLOSED if ioepoch is closed.
331 * MDT_IOEPOCH_GETATTR if ioepoch is closed but another SOM update is needed.
333 static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info,
334 struct mdt_object *o)
336 struct md_attr *tmp_ma;
340 int rc = 0, ret = MDT_IOEPOCH_CLOSED;
343 la = &info->mti_attr.ma_attr;
344 achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE);
346 mutex_lock(&o->mot_ioepoch_mutex);
347 o->mot_ioepoch_count--;
349 tmp_ma = &info->mti_u.som.attr;
350 tmp_ma->ma_lmm = info->mti_attr.ma_lmm;
351 tmp_ma->ma_lmm_size = info->mti_attr.ma_lmm_size;
352 tmp_ma->ma_som = &info->mti_u.som.data;
353 tmp_ma->ma_need = MA_INODE | MA_LOV | MA_SOM;
354 tmp_ma->ma_valid = 0;
355 rc = mdt_attr_get_complex(info, o, tmp_ma);
359 /* Check the on-disk SOM state. */
360 if (o->mot_flags & MOF_SOM_RECOV)
362 else if (!(o->mot_flags & MOF_SOM_CREATED) &&
363 !(tmp_ma->ma_valid & MA_SOM))
366 CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
367 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
369 opened = mdt_ioepoch_opened(o);
371 * If IOEpoch is not opened, check if a Size-on-MDS update is needed.
372 * Skip the check for file with no LOV or for unlink files.
374 if (!opened && tmp_ma->ma_valid & MA_LOV &&
375 !(tmp_ma->ma_valid & MA_INODE && tmp_ma->ma_attr.la_nlink == 0)) {
377 /* If some previous writer was evicted, re-ask the
378 * client for attributes. Even if attributes are
379 * provided, we cannot believe in them.
380 * Another use case is that there is no SOM cache on
381 * disk -- first access with SOM or there was an MDS
383 ret = MDT_IOEPOCH_GETATTR;
384 else if (o->mot_flags & MOF_SOM_CHANGE)
385 /* Some previous writer changed the attribute.
386 * Do not believe to the current Size-on-MDS
387 * update, re-ask client. */
388 ret = MDT_IOEPOCH_GETATTR;
389 else if (!(la->la_valid & LA_SIZE) && achange)
390 /* Attributes were changed by the last writer
391 * only but no Size-on-MDS update is received.*/
392 ret = MDT_IOEPOCH_GETATTR;
395 if (achange || ret == MDT_IOEPOCH_GETATTR)
396 o->mot_flags |= MOF_SOM_CHANGE;
398 /* If epoch ends and relable SOM attributes are obtained, update them.
399 * Create SOM ea for new files even if there is no attributes obtained
400 * (0-length file). */
401 if (ret == MDT_IOEPOCH_CLOSED && !opened) {
402 if (achange || o->mot_flags & MOF_SOM_CREATED) {
403 LASSERT(achange || !(la->la_valid & LA_SIZE));
404 rc = mdt_som_attr_set(info, o, o->mot_ioepoch,
406 /* Avoid the following setattrs of these attributes,
407 * e.g. for atime update. */
408 info->mti_attr.ma_valid = 0;
410 mdt_object_som_enable(o, o->mot_ioepoch);
413 mutex_unlock(&o->mot_ioepoch_mutex);
414 /* If recovery is needed, tell the client to perform GETATTR under
416 if (ret == MDT_IOEPOCH_GETATTR && recovery) {
417 struct mdt_body *rep;
418 rep = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
419 rep->valid |= OBD_MD_FLGETATTRLOCK;
425 mutex_unlock(&o->mot_ioepoch_mutex);
430 * Close IOEpoch (opened file or MDS_FMODE_EPOCH state). It happens if:
431 * - a client closes the IOEpoch;
432 * - a client eviction occured.
434 * MDT_IOEPOCH_OPENED if the client does not close IOEpoch.
435 * MDT_IOEPOCH_CLOSED if the client closes IOEpoch.
436 * MDT_IOEPOCH_GETATTR if the client closes IOEpoch but another SOM attribute
439 static int mdt_ioepoch_close(struct mdt_thread_info *info, struct mdt_object *o)
441 struct ptlrpc_request *req = mdt_info_req(info);
444 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
445 !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
448 LASSERT(o->mot_ioepoch_count);
449 LASSERT(info->mti_ioepoch == NULL ||
450 info->mti_ioepoch->ioepoch == o->mot_ioepoch);
452 /* IOEpoch is closed only if client tells about it or eviction occures.
453 * In the replay case, always close the epoch. */
455 RETURN(mdt_ioepoch_close_on_eviction(info, o));
456 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
457 RETURN(mdt_ioepoch_close_on_replay(info, o));
458 if (info->mti_ioepoch->flags & MF_EPOCH_CLOSE)
459 RETURN(mdt_ioepoch_close_reg(info, o));
460 /* IO epoch is not closed. */
461 RETURN(MDT_IOEPOCH_OPENED);
465 * Close MDS_FMODE_SOM state, when IOEpoch is already closed and we are waiting
466 * for attribute update. It happens if:
467 * - SOM Attribute Update is obtained;
468 * - the client failed to obtain it and informs MDS about it;
469 * - a client eviction occured.
470 * Apply obtained attributes for the 1st case, wipe out the on-disk SOM
473 int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o)
475 struct ptlrpc_request *req = mdt_info_req(info);
477 int act = MDT_SOM_ENABLE;
481 LASSERT(!req || info->mti_ioepoch);
482 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
483 !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
486 /* No size whereas MF_SOM_CHANGE is set means client failed to
487 * obtain ost attributes, drop the SOM cache on disk if so. */
489 (info->mti_ioepoch &&
490 info->mti_ioepoch->flags & MF_SOM_CHANGE &&
491 !(info->mti_attr.ma_attr.la_valid & LA_SIZE)))
492 act = MDT_SOM_DISABLE;
494 mutex_lock(&o->mot_ioepoch_mutex);
495 /* Mark the object it is the recovery state if we failed to obtain
497 if (act == MDT_SOM_DISABLE)
498 o->mot_flags |= MOF_SOM_RECOV;
500 if (!mdt_ioepoch_opened(o)) {
501 ioepoch = info->mti_ioepoch ?
502 info->mti_ioepoch->ioepoch : o->mot_ioepoch;
504 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
505 rc = mdt_som_attr_set(info, o, ioepoch, act);
506 mdt_object_som_enable(o, ioepoch);
508 mutex_unlock(&o->mot_ioepoch_mutex);
512 int mdt_write_read(struct mdt_object *o)
516 mutex_lock(&o->mot_ioepoch_mutex);
517 rc = o->mot_writecount;
518 mutex_unlock(&o->mot_ioepoch_mutex);
522 int mdt_write_get(struct mdt_object *o)
526 mutex_lock(&o->mot_ioepoch_mutex);
527 if (o->mot_writecount < 0)
531 mutex_unlock(&o->mot_ioepoch_mutex);
535 void mdt_write_put(struct mdt_object *o)
538 mutex_lock(&o->mot_ioepoch_mutex);
540 mutex_unlock(&o->mot_ioepoch_mutex);
544 static int mdt_write_deny(struct mdt_object *o)
548 mutex_lock(&o->mot_ioepoch_mutex);
549 if (o->mot_writecount > 0)
553 mutex_unlock(&o->mot_ioepoch_mutex);
557 static void mdt_write_allow(struct mdt_object *o)
560 mutex_lock(&o->mot_ioepoch_mutex);
562 mutex_unlock(&o->mot_ioepoch_mutex);
566 /* there can be no real transaction so prepare the fake one */
567 static void mdt_empty_transno(struct mdt_thread_info *info, int rc)
569 struct mdt_device *mdt = info->mti_mdt;
570 struct ptlrpc_request *req = mdt_info_req(info);
571 struct tg_export_data *ted;
572 struct lsd_client_data *lcd;
575 /* transaction has occurred already */
576 if (lustre_msg_get_transno(req->rq_repmsg) != 0)
579 spin_lock(&mdt->mdt_lut.lut_translock);
581 if (info->mti_transno != 0) {
582 struct obd_export *exp = req->rq_export;
584 CERROR("%s: replay trans "LPU64" NID %s: rc = %d\n",
585 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name,
587 libcfs_nid2str(exp->exp_connection->c_peer.nid),
591 } else if (info->mti_transno == 0) {
592 info->mti_transno = ++mdt->mdt_lut.lut_last_transno;
594 /* should be replay */
595 if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
596 mdt->mdt_lut.lut_last_transno = info->mti_transno;
598 spin_unlock(&mdt->mdt_lut.lut_translock);
600 CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n",
602 req->rq_export->exp_obd->obd_last_committed);
604 req->rq_transno = info->mti_transno;
605 lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
607 /* update lcd in memory only for resent cases */
608 ted = &req->rq_export->exp_target_data;
610 mutex_lock(&ted->ted_lcd_lock);
612 if (info->mti_transno < lcd->lcd_last_transno &&
613 info->mti_transno != 0) {
614 /* This should happen during replay. Do not update
615 * last rcvd info if replay req transno < last transno,
616 * otherwise the following resend(after replay) can not
617 * be checked correctly by xid */
618 mutex_unlock(&ted->ted_lcd_lock);
619 CDEBUG(D_HA, "%s: transno = "LPU64" < last_transno = "LPU64"\n",
620 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name,
621 info->mti_transno, lcd->lcd_last_transno);
625 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
626 lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
627 if (info->mti_transno != 0)
628 lcd->lcd_last_close_transno = info->mti_transno;
629 lcd->lcd_last_close_xid = req->rq_xid;
630 lcd->lcd_last_close_result = rc;
632 /* VBR: save versions in last_rcvd for reconstruct. */
633 __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
635 lcd->lcd_pre_versions[0] = pre_versions[0];
636 lcd->lcd_pre_versions[1] = pre_versions[1];
637 lcd->lcd_pre_versions[2] = pre_versions[2];
638 lcd->lcd_pre_versions[3] = pre_versions[3];
640 if (info->mti_transno != 0)
641 lcd->lcd_last_transno = info->mti_transno;
643 lcd->lcd_last_xid = req->rq_xid;
644 lcd->lcd_last_result = rc;
645 lcd->lcd_last_data = info->mti_opdata;
647 mutex_unlock(&ted->ted_lcd_lock);
652 void mdt_mfd_set_mode(struct mdt_file_data *mfd, int mode)
654 LASSERT(mfd != NULL);
656 CDEBUG(D_HA, "Change mfd %p mode 0x%x->0x%x\n",
657 mfd, (unsigned int)mfd->mfd_mode, (unsigned int)mode);
659 mfd->mfd_mode = mode;
662 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
663 struct mdt_object *o, __u64 flags, int created)
665 struct ptlrpc_request *req = mdt_info_req(info);
666 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
667 struct mdt_file_data *mfd;
668 struct md_attr *ma = &info->mti_attr;
669 struct lu_attr *la = &ma->ma_attr;
670 struct mdt_body *repbody;
671 int rc = 0, isdir, isreg;
674 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
676 isreg = S_ISREG(la->la_mode);
677 isdir = S_ISDIR(la->la_mode);
678 if (isreg && !(ma->ma_valid & MA_LOV)) {
680 * No EA, check whether it is will set regEA and dirEA since in
681 * above attr get, these size might be zero, so reset it, to
682 * retrieve the MD after create obj.
684 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
687 /* in replay case, p == NULL */
688 rc = mdt_create_data(info, p, o);
693 CDEBUG(D_INODE, "after open, ma_valid bit = "LPX64" lmm_size = %d\n",
694 ma->ma_valid, ma->ma_lmm_size);
696 if (ma->ma_valid & MA_LOV) {
697 LASSERT(ma->ma_lmm_size != 0);
698 repbody->eadatasize = ma->ma_lmm_size;
700 repbody->valid |= OBD_MD_FLDIREA;
702 repbody->valid |= OBD_MD_FLEASIZE;
705 if (flags & FMODE_WRITE) {
706 rc = mdt_write_get(o);
708 mdt_ioepoch_open(info, o, created);
709 repbody->ioepoch = o->mot_ioepoch;
711 } else if (flags & MDS_FMODE_EXEC) {
712 rc = mdt_write_deny(o);
717 rc = mo_open(info->mti_env, mdt_object_child(o),
718 created ? flags | MDS_OPEN_CREATED : flags);
725 * Keep a reference on this object for this open, and is
726 * released by mdt_mfd_close().
728 mdt_object_get(info->mti_env, o);
731 * @flags is always not zero. At least it should be FMODE_READ,
732 * FMODE_WRITE or MDS_FMODE_EXEC.
737 mdt_mfd_set_mode(mfd, flags);
740 mfd->mfd_xid = req->rq_xid;
743 if (req_is_replay(req)) {
744 struct mdt_file_data *old_mfd;
745 /* Check wheather old cookie already exist in
746 * the list, becasue when do recovery, client
747 * might be disconnected from server, and
748 * restart replay, so there maybe some orphan
749 * mfd here, we should remove them */
750 LASSERT(info->mti_rr.rr_handle != NULL);
751 old_mfd = mdt_handle2mfd(info, info->mti_rr.rr_handle);
753 CDEBUG(D_HA, "del orph mfd %p fid=("DFID") "
754 "cookie=" LPX64"\n", mfd,
755 PFID(mdt_object_fid(mfd->mfd_object)),
756 info->mti_rr.rr_handle->cookie);
757 spin_lock(&med->med_open_lock);
758 class_handle_unhash(&old_mfd->mfd_handle);
759 cfs_list_del_init(&old_mfd->mfd_list);
760 spin_unlock(&med->med_open_lock);
761 /* no attr update for that close */
763 ma->ma_valid |= MA_FLAGS;
764 ma->ma_attr_flags |= MDS_RECOV_OPEN;
765 mdt_mfd_close(info, old_mfd);
766 ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
767 ma->ma_valid &= ~MA_FLAGS;
769 CDEBUG(D_HA, "Store old cookie "LPX64" in new mfd\n",
770 info->mti_rr.rr_handle->cookie);
771 mfd->mfd_old_handle.cookie =
772 info->mti_rr.rr_handle->cookie;
774 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
776 if (req->rq_export->exp_disconnected) {
777 spin_lock(&med->med_open_lock);
778 class_handle_unhash(&mfd->mfd_handle);
779 cfs_list_del_init(&mfd->mfd_list);
780 spin_unlock(&med->med_open_lock);
781 mdt_mfd_close(info, mfd);
783 spin_lock(&med->med_open_lock);
784 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
785 spin_unlock(&med->med_open_lock);
788 mdt_empty_transno(info, rc);
790 GOTO(err_out, rc = -ENOMEM);
796 if (flags & FMODE_WRITE)
797 /* XXX We also need to close io epoch here.
798 * See LU-1220 - green */
800 else if (flags & FMODE_EXEC)
805 int mdt_finish_open(struct mdt_thread_info *info,
806 struct mdt_object *p, struct mdt_object *o,
807 __u64 flags, int created, struct ldlm_reply *rep)
809 struct ptlrpc_request *req = mdt_info_req(info);
810 struct obd_export *exp = req->rq_export;
811 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
812 struct md_attr *ma = &info->mti_attr;
813 struct lu_attr *la = &ma->ma_attr;
814 struct mdt_file_data *mfd;
815 struct mdt_body *repbody;
817 int isreg, isdir, islnk;
821 LASSERT(ma->ma_valid & MA_INODE);
823 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
825 isreg = S_ISREG(la->la_mode);
826 isdir = S_ISDIR(la->la_mode);
827 islnk = S_ISLNK(la->la_mode);
828 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
830 /* LU-2275, simulate broken behaviour (esp. prevalent in
831 * pre-2.4 servers where a very strange reply is sent on error
832 * that looks like it was actually almost succesful and a failure at the
834 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) {
835 mdt_set_disposition(info, rep, DISP_OPEN_LOCK | \
836 DISP_OPEN_OPEN | DISP_LOOKUP_NEG | \
841 if (exp_connect_rmtclient(exp)) {
842 void *buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
844 rc = mdt_pack_remote_perm(info, o, buf);
846 repbody->valid &= ~OBD_MD_FLRMTPERM;
847 repbody->aclsize = 0;
849 repbody->valid |= OBD_MD_FLRMTPERM;
850 repbody->aclsize = sizeof(struct mdt_remote_perm);
853 #ifdef CONFIG_FS_POSIX_ACL
854 else if (exp->exp_connect_flags & OBD_CONNECT_ACL) {
855 const struct lu_env *env = info->mti_env;
856 struct md_object *next = mdt_object_child(o);
857 struct lu_buf *buf = &info->mti_buf;
859 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
860 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
862 if (buf->lb_len > 0) {
863 rc = mo_xattr_get(env, next, buf,
864 XATTR_NAME_ACL_ACCESS);
866 if (rc == -ENODATA) {
867 repbody->aclsize = 0;
868 repbody->valid |= OBD_MD_FLACL;
870 } else if (rc == -EOPNOTSUPP) {
873 CERROR("got acl size: %d\n", rc);
876 repbody->aclsize = rc;
877 repbody->valid |= OBD_MD_FLACL;
884 if (info->mti_mdt->mdt_opts.mo_mds_capa &&
885 exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA) {
886 struct lustre_capa *capa;
888 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
890 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
891 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
894 repbody->valid |= OBD_MD_FLMDSCAPA;
896 if (info->mti_mdt->mdt_opts.mo_oss_capa &&
897 exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA &&
898 S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) {
899 struct lustre_capa *capa;
901 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
903 capa->lc_opc = CAPA_OPC_OSS_DEFAULT | capa_open_opc(flags);
904 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
907 repbody->valid |= OBD_MD_FLOSSCAPA;
911 * If we are following a symlink, don't open; and do not return open
912 * handle for special nodes as client required.
914 if (islnk || (!isreg && !isdir &&
915 (req->rq_export->exp_connect_flags & OBD_CONNECT_NODEVOH))) {
916 lustre_msg_set_transno(req->rq_repmsg, 0);
920 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
923 * We need to return the existing object's fid back, so it is done here,
924 * after preparing the reply.
926 if (!created && (flags & MDS_OPEN_EXCL) && (flags & MDS_OPEN_CREAT))
929 /* This can't be done earlier, we need to return reply body */
931 if (flags & (MDS_OPEN_CREAT | FMODE_WRITE)) {
932 /* We are trying to create or write an existing dir. */
935 } else if (flags & MDS_OPEN_DIRECTORY)
938 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
939 OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE)) {
944 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
945 spin_lock(&med->med_open_lock);
946 cfs_list_for_each(t, &med->med_open_head) {
947 mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list);
948 if (mfd->mfd_xid == req->rq_xid)
952 spin_unlock(&med->med_open_lock);
955 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
956 /*set repbody->ea_size for resent case*/
957 if (ma->ma_valid & MA_LOV) {
958 LASSERT(ma->ma_lmm_size != 0);
959 repbody->eadatasize = ma->ma_lmm_size;
961 repbody->valid |= OBD_MD_FLDIREA;
963 repbody->valid |= OBD_MD_FLEASIZE;
969 rc = mdt_mfd_open(info, p, o, flags, created);
973 extern void mdt_req_from_lcd(struct ptlrpc_request *req,
974 struct lsd_client_data *lcd);
976 void mdt_reconstruct_open(struct mdt_thread_info *info,
977 struct mdt_lock_handle *lhc)
979 const struct lu_env *env = info->mti_env;
980 struct mdt_device *mdt = info->mti_mdt;
981 struct req_capsule *pill = info->mti_pill;
982 struct ptlrpc_request *req = mdt_info_req(info);
983 struct tg_export_data *ted = &req->rq_export->exp_target_data;
984 struct lsd_client_data *lcd = ted->ted_lcd;
985 struct md_attr *ma = &info->mti_attr;
986 struct mdt_reint_record *rr = &info->mti_rr;
987 __u32 flags = info->mti_spec.sp_cr_flags;
988 struct ldlm_reply *ldlm_rep;
989 struct mdt_object *parent;
990 struct mdt_object *child;
991 struct mdt_body *repbody;
995 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
996 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
997 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
999 ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
1000 ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD,
1002 ma->ma_need = MA_INODE;
1003 if (ma->ma_lmm_size > 0)
1004 ma->ma_need |= MA_LOV;
1008 mdt_req_from_lcd(req, lcd);
1009 mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data);
1011 CDEBUG(D_INODE, "This is reconstruct open: disp="LPX64", result=%d\n",
1012 ldlm_rep->lock_policy_res1, req->rq_status);
1014 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) &&
1015 req->rq_status != 0)
1016 /* We did not create successfully, return error to client. */
1017 GOTO(out, rc = req->rq_status);
1019 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE)) {
1020 struct obd_export *exp = req->rq_export;
1022 * We failed after creation, but we do not know in which step
1023 * we failed. So try to check the child object.
1025 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1026 if (IS_ERR(parent)) {
1027 rc = PTR_ERR(parent);
1028 LCONSOLE_WARN("Parent "DFID" lookup error %d."
1029 " Evicting client %s with export %s.\n",
1030 PFID(rr->rr_fid1), rc,
1031 obd_uuid2str(&exp->exp_client_uuid),
1032 obd_export_nid2str(exp));
1033 mdt_export_evict(exp);
1036 child = mdt_object_find(env, mdt, rr->rr_fid2);
1037 if (IS_ERR(child)) {
1038 rc = PTR_ERR(child);
1039 LCONSOLE_WARN("Child "DFID" lookup error %d."
1040 " Evicting client %s with export %s.\n",
1041 PFID(mdt_object_fid(child)), rc,
1042 obd_uuid2str(&exp->exp_client_uuid),
1043 obd_export_nid2str(exp));
1044 mdt_object_put(env, parent);
1045 mdt_export_evict(exp);
1048 rc = mdt_object_exists(child);
1051 mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
1052 rc = mdt_attr_get_complex(info, child, ma);
1054 rc = mdt_finish_open(info, parent, child,
1055 flags, 1, ldlm_rep);
1056 } else if (rc < 0) {
1057 /* the child object was created on remote server */
1058 repbody->fid1 = *rr->rr_fid2;
1059 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1061 } else if (rc == 0) {
1062 /* the child does not exist, we should do regular open */
1063 mdt_object_put(env, parent);
1064 mdt_object_put(env, child);
1065 GOTO(regular_open, 0);
1067 mdt_object_put(env, parent);
1068 mdt_object_put(env, child);
1072 /* We did not try to create, so we are a pure open */
1073 rc = mdt_reint_open(info, lhc);
1078 req->rq_status = rc;
1079 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
1080 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
1083 int mdt_open_by_fid(struct mdt_thread_info* info,
1084 struct ldlm_reply *rep)
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 *o;
1093 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
1095 RETURN(rc = PTR_ERR(o));
1097 rc = mdt_object_exists(o);
1099 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1103 rc = mdt_attr_get_complex(info, o, ma);
1105 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1106 } else if (rc == 0) {
1109 /* the child object was created on remote server */
1110 struct mdt_body *repbody;
1111 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1112 repbody->fid1 = *rr->rr_fid2;
1113 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1117 mdt_object_put(info->mti_env, o);
1121 int mdt_open_by_fid_lock(struct mdt_thread_info *info, struct ldlm_reply *rep,
1122 struct mdt_lock_handle *lhc)
1124 const struct lu_env *env = info->mti_env;
1125 struct mdt_device *mdt = info->mti_mdt;
1126 __u32 flags = info->mti_spec.sp_cr_flags;
1127 struct mdt_reint_record *rr = &info->mti_rr;
1128 struct md_attr *ma = &info->mti_attr;
1129 struct mdt_object *parent= NULL;
1130 struct mdt_object *o;
1135 if (md_should_create(flags) && !(flags & MDS_OPEN_HAS_EA)) {
1136 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1137 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1138 if (IS_ERR(parent)) {
1139 CDEBUG(D_INODE, "Fail to find parent "DFID
1140 " for anonymous created %ld, try to"
1141 " use server-side parent.\n",
1142 PFID(rr->rr_fid1), PTR_ERR(parent));
1147 ma->ma_need |= MA_PFID;
1150 o = mdt_object_find(env, mdt, rr->rr_fid2);
1152 RETURN(rc = PTR_ERR(o));
1154 rc = mdt_object_exists(o);
1156 mdt_set_disposition(info, rep, (DISP_LOOKUP_EXECD |
1158 GOTO(out, rc = -ENOENT);
1159 } else if (rc < 0) {
1160 CERROR("NFS remote open shouldn't happen.\n");
1163 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1167 if (flags & FMODE_WRITE)
1169 else if (flags & MDS_FMODE_EXEC)
1174 mdt_lock_handle_init(lhc);
1175 mdt_lock_reg_init(lhc, lm);
1176 rc = mdt_object_lock(info, o, lhc,
1177 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN,
1182 rc = mdt_attr_get_complex(info, o, ma);
1186 if (ma->ma_valid & MA_PFID) {
1187 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1188 if (IS_ERR(parent)) {
1189 CDEBUG(D_INODE, "Fail to find parent "DFID
1190 " for anonymous created %ld, try to"
1191 " use system default.\n",
1192 PFID(&ma->ma_pfid), PTR_ERR(parent));
1197 if (flags & MDS_OPEN_LOCK)
1198 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1199 rc = mdt_finish_open(info, parent, o, flags, 0, rep);
1201 if (!(flags & MDS_OPEN_LOCK) || rc)
1202 mdt_object_unlock(info, o, lhc, 1);
1206 mdt_object_put(env, o);
1208 mdt_object_put(env, parent);
1212 int mdt_pin(struct mdt_thread_info* info)
1215 RETURN(err_serious(-EOPNOTSUPP));
1218 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1219 int mdt_cross_open(struct mdt_thread_info* info,
1220 const struct lu_fid *fid,
1221 struct ldlm_reply *rep, __u32 flags)
1223 struct md_attr *ma = &info->mti_attr;
1224 struct mdt_object *o;
1228 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1230 RETURN(rc = PTR_ERR(o));
1232 rc = mdt_object_exists(o);
1234 /* Do permission check for cross-open. */
1235 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o),
1236 NULL, flags | MDS_OPEN_CROSS);
1240 mdt_set_capainfo(info, 0, fid, BYPASS_CAPA);
1241 rc = mdt_attr_get_complex(info, o, ma);
1243 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1244 } else if (rc == 0) {
1246 * Something is wrong here. lookup was positive but there is
1249 CERROR("Cross-ref object doesn't exist!\n");
1252 /* Something is wrong here, the object is on another MDS! */
1253 CERROR("The object isn't on this server! FLD error?\n");
1254 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1256 "Object isn't on this server! FLD error?\n");
1262 mdt_object_put(info->mti_env, o);
1266 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1268 struct mdt_device *mdt = info->mti_mdt;
1269 struct ptlrpc_request *req = mdt_info_req(info);
1270 struct mdt_object *parent;
1271 struct mdt_object *child;
1272 struct mdt_lock_handle *lh;
1273 struct ldlm_reply *ldlm_rep;
1274 struct mdt_body *repbody;
1275 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1276 struct md_attr *ma = &info->mti_attr;
1277 __u64 create_flags = info->mti_spec.sp_cr_flags;
1278 struct mdt_reint_record *rr = &info->mti_rr;
1279 struct lu_name *lname;
1285 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1286 (obd_timeout + 1) / 4);
1288 mdt_counter_incr(req, LPROC_MDT_OPEN);
1289 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1291 ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
1292 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD,
1294 ma->ma_need = MA_INODE;
1295 if (ma->ma_lmm_size > 0)
1296 ma->ma_need |= MA_LOV;
1300 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1301 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1303 if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) {
1304 CERROR("file join is not supported anymore.\n");
1305 GOTO(out, result = err_serious(-EOPNOTSUPP));
1307 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1309 if ((create_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1310 info->mti_spec.u.sp_ea.eadata == NULL)
1311 GOTO(out, result = err_serious(-EINVAL));
1313 CDEBUG(D_INODE, "I am going to open "DFID"/(%s->"DFID") "
1314 "cr_flag="LPO64" mode=0%06o msg_flag=0x%x\n",
1315 PFID(rr->rr_fid1), rr->rr_name,
1316 PFID(rr->rr_fid2), create_flags,
1317 ma->ma_attr.la_mode, msg_flags);
1319 if (req_is_replay(req) ||
1320 (req->rq_export->exp_libclient && create_flags & MDS_OPEN_HAS_EA)) {
1321 /* This is a replay request or from liblustre with ea. */
1322 result = mdt_open_by_fid(info, ldlm_rep);
1324 if (result != -ENOENT) {
1325 if (req->rq_export->exp_libclient &&
1326 create_flags & MDS_OPEN_HAS_EA)
1327 GOTO(out, result = 0);
1330 /* We didn't find the correct object, so we need to re-create it
1331 * via a regular replay. */
1332 if (!(create_flags & MDS_OPEN_CREAT)) {
1333 DEBUG_REQ(D_ERROR, req,
1334 "OPEN & CREAT not in open replay/by_fid.");
1335 GOTO(out, result = -EFAULT);
1337 CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
1338 } else if ((rr->rr_namelen == 0 && !info->mti_cross_ref &&
1339 create_flags & MDS_OPEN_LOCK) ||
1340 (create_flags & MDS_OPEN_BY_FID)) {
1341 result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
1342 if (result != -ENOENT && !(create_flags & MDS_OPEN_CREAT))
1344 if (unlikely(rr->rr_namelen == 0))
1345 GOTO(out, result = -EINVAL);
1346 CDEBUG(D_INFO, "No object(2), continue as regular open.\n");
1349 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1350 GOTO(out, result = err_serious(-ENOMEM));
1352 mdt_set_disposition(info, ldlm_rep,
1353 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1355 if (info->mti_cross_ref) {
1356 /* This is cross-ref open */
1357 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1358 result = mdt_cross_open(info, rr->rr_fid1, ldlm_rep,
1363 lh = &info->mti_lh[MDT_LH_PARENT];
1364 mdt_lock_pdo_init(lh, (create_flags & MDS_OPEN_CREAT) ?
1365 LCK_PW : LCK_PR, rr->rr_name, rr->rr_namelen);
1367 parent = mdt_object_find_lock(info, rr->rr_fid1, lh,
1368 MDS_INODELOCK_UPDATE);
1370 GOTO(out, result = PTR_ERR(parent));
1372 /* get and check version of parent */
1373 result = mdt_version_get_check(info, parent, 0);
1375 GOTO(out_parent, result);
1377 fid_zero(child_fid);
1379 lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen);
1380 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1381 lname, child_fid, &info->mti_spec);
1382 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1383 "looking for "DFID"/%s, result fid="DFID"\n",
1384 PFID(mdt_object_fid(parent)), rr->rr_name, PFID(child_fid));
1386 if (result != 0 && result != -ENOENT && result != -ESTALE)
1387 GOTO(out_parent, result);
1389 if (result == -ENOENT || result == -ESTALE) {
1390 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1391 if (result == -ESTALE) {
1393 * -ESTALE means the parent is a dead(unlinked) dir, so
1394 * it should return -ENOENT to in accordance with the
1395 * original mds implementaion.
1397 GOTO(out_parent, result = -ENOENT);
1399 if (!(create_flags & MDS_OPEN_CREAT))
1400 GOTO(out_parent, result);
1401 *child_fid = *info->mti_rr.rr_fid2;
1402 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1404 /* In the function below, .hs_keycmp resolves to
1405 * lu_obj_hop_keycmp() */
1406 /* coverity[overrun-buffer-val] */
1407 child = mdt_object_new(info->mti_env, mdt, child_fid);
1410 * Check for O_EXCL is moved to the mdt_finish_open(), we need to
1411 * return FID back in that case.
1413 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1414 child = mdt_object_find(info->mti_env, mdt, child_fid);
1417 GOTO(out_parent, result = PTR_ERR(child));
1419 /** check version of child */
1420 rc = mdt_version_get_check(info, child, 1);
1422 GOTO(out_child, result = rc);
1424 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1425 if (result == -ENOENT) {
1426 if (mdt_object_obf(parent))
1427 GOTO(out_child, result = -EPERM);
1429 /* save versions in reply */
1430 mdt_version_get_save(info, parent, 0);
1431 mdt_version_get_save(info, child, 1);
1433 /* version of child will be changed */
1434 info->mti_mos = child;
1436 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1437 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1439 /* Let lower layers know what is lock mode on directory. */
1440 info->mti_spec.sp_cr_mode =
1441 mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
1444 * Do not perform lookup sanity check. We know that name does
1447 info->mti_spec.sp_cr_lookup = 0;
1448 info->mti_spec.sp_feat = &dt_directory_features;
1450 result = mdo_create(info->mti_env,
1451 mdt_object_child(parent),
1453 mdt_object_child(child),
1456 if (result == -ERESTART) {
1457 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1458 GOTO(out_child, result);
1461 /* XXX: we should call this once, see few lines below */
1463 result = mdt_attr_get_complex(info, child, ma);
1466 GOTO(out_child, result);
1470 /* We have to get attr & lov ea for this object */
1471 result = mdt_attr_get_complex(info, child, ma);
1473 * The object is on remote node, return its FID for remote open.
1475 if (result == -EREMOTE) {
1477 * Check if this lock already was sent to client and
1478 * this is resent case. For resent case do not take lock
1479 * again, use what is already granted.
1481 LASSERT(lhc != NULL);
1483 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1484 struct ldlm_lock *lock;
1486 LASSERT(msg_flags & MSG_RESENT);
1488 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1490 CERROR("Invalid lock handle "LPX64"\n",
1491 lhc->mlh_reg_lh.cookie);
1494 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1495 &lock->l_resource->lr_name));
1496 LDLM_LOCK_PUT(lock);
1499 mdt_lock_handle_init(lhc);
1500 mdt_lock_reg_init(lhc, LCK_PR);
1502 rc = mdt_object_lock(info, child, lhc,
1503 MDS_INODELOCK_LOOKUP,
1506 repbody->fid1 = *mdt_object_fid(child);
1507 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1510 GOTO(out_child, result);
1514 LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh));
1516 /* get openlock if this is not replay and if a client requested it */
1517 if (!req_is_replay(req) && create_flags & MDS_OPEN_LOCK) {
1520 if (create_flags & FMODE_WRITE)
1522 else if (create_flags & MDS_FMODE_EXEC)
1526 mdt_lock_handle_init(lhc);
1527 mdt_lock_reg_init(lhc, lm);
1528 rc = mdt_object_lock(info, child, lhc,
1529 MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN,
1533 GOTO(out_child, result);
1536 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1540 /* Try to open it now. */
1541 rc = mdt_finish_open(info, parent, child, create_flags,
1545 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
1546 /* openlock was acquired and mdt_finish_open failed -
1547 drop the openlock */
1548 mdt_object_unlock(info, child, lhc, 1);
1552 ma->ma_cookie_size = 0;
1553 rc = mdo_unlink(info->mti_env,
1554 mdt_object_child(parent),
1555 mdt_object_child(child),
1559 CERROR("Error in cleanup of open\n");
1564 mdt_object_put(info->mti_env, child);
1566 mdt_object_unlock_put(info, parent, lh, result || !created);
1568 if (result && result != -EREMOTE)
1569 lustre_msg_set_transno(req->rq_repmsg, 0);
1573 #define MFD_CLOSED(mode) (((mode) & ~(MDS_FMODE_EPOCH | MDS_FMODE_SOM | \
1574 MDS_FMODE_TRUNC)) == MDS_FMODE_CLOSED)
1576 static int mdt_mfd_closed(struct mdt_file_data *mfd)
1578 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_mode));
1581 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
1583 struct mdt_object *o = mfd->mfd_object;
1584 struct md_object *next = mdt_object_child(o);
1585 struct md_attr *ma = &info->mti_attr;
1586 int ret = MDT_IOEPOCH_CLOSED;
1591 mode = mfd->mfd_mode;
1593 if ((mode & FMODE_WRITE) || (mode & MDS_FMODE_TRUNC)) {
1595 ret = mdt_ioepoch_close(info, o);
1596 } else if (mode & MDS_FMODE_EXEC) {
1598 } else if (mode & MDS_FMODE_EPOCH) {
1599 ret = mdt_ioepoch_close(info, o);
1600 } else if (mode & MDS_FMODE_SOM) {
1601 ret = mdt_som_au_close(info, o);
1604 /* Update atime on close only. */
1605 if ((mode & MDS_FMODE_EXEC || mode & FMODE_READ || mode & FMODE_WRITE)
1606 && (ma->ma_valid & MA_INODE) && (ma->ma_attr.la_valid & LA_ATIME)) {
1607 /* Set the atime only. */
1608 ma->ma_valid = MA_INODE;
1609 ma->ma_attr.la_valid = LA_ATIME;
1610 rc = mo_attr_set(info->mti_env, next, ma);
1613 ma->ma_need |= MA_INODE;
1614 ma->ma_valid &= ~MA_INODE;
1616 if (!MFD_CLOSED(mode))
1617 rc = mo_close(info->mti_env, next, ma, mode);
1619 if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) {
1620 struct mdt_export_data *med;
1622 /* The IOepoch is still opened or SOM update is needed.
1623 * Put mfd back into the list. */
1624 LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
1625 mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ?
1626 MDS_FMODE_EPOCH : MDS_FMODE_SOM);
1628 LASSERT(mdt_info_req(info));
1629 med = &mdt_info_req(info)->rq_export->exp_mdt_data;
1630 spin_lock(&med->med_open_lock);
1631 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
1632 class_handle_hash_back(&mfd->mfd_handle);
1633 spin_unlock(&med->med_open_lock);
1635 if (ret == MDT_IOEPOCH_OPENED) {
1639 CDEBUG(D_INODE, "Size-on-MDS attribute update is "
1640 "needed on "DFID"\n", PFID(mdt_object_fid(o)));
1644 mdt_object_put(info->mti_env, o);
1647 RETURN(rc ? rc : ret);
1650 int mdt_close(struct mdt_thread_info *info)
1652 struct mdt_export_data *med;
1653 struct mdt_file_data *mfd;
1654 struct mdt_object *o;
1655 struct md_attr *ma = &info->mti_attr;
1656 struct mdt_body *repbody = NULL;
1657 struct ptlrpc_request *req = mdt_info_req(info);
1661 mdt_counter_incr(req, LPROC_MDT_CLOSE);
1662 /* Close may come with the Size-on-MDS update. Unpack it. */
1663 rc = mdt_close_unpack(info);
1665 RETURN(err_serious(rc));
1667 LASSERT(info->mti_ioepoch);
1669 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
1670 info->mti_mdt->mdt_max_mdsize);
1671 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
1672 info->mti_mdt->mdt_max_cookiesize);
1673 rc = req_capsule_server_pack(info->mti_pill);
1674 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
1675 mdt_client_compatibility(info);
1677 mdt_fix_reply(info);
1678 RETURN(lustre_msg_get_status(req->rq_repmsg));
1681 /* Continue to close handle even if we can not pack reply */
1683 repbody = req_capsule_server_get(info->mti_pill,
1685 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
1687 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
1690 ma->ma_cookie = req_capsule_server_get(info->mti_pill,
1692 ma->ma_cookie_size = req_capsule_get_size(info->mti_pill,
1695 ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE;
1696 repbody->eadatasize = 0;
1697 repbody->aclsize = 0;
1699 rc = err_serious(rc);
1702 med = &req->rq_export->exp_mdt_data;
1703 spin_lock(&med->med_open_lock);
1704 mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
1705 if (mdt_mfd_closed(mfd)) {
1706 spin_unlock(&med->med_open_lock);
1707 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
1708 ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1),
1709 info->mti_ioepoch->handle.cookie);
1710 /** not serious error since bug 3633 */
1713 class_handle_unhash(&mfd->mfd_handle);
1714 cfs_list_del_init(&mfd->mfd_list);
1715 spin_unlock(&med->med_open_lock);
1717 /* Do not lose object before last unlink. */
1718 o = mfd->mfd_object;
1719 mdt_object_get(info->mti_env, o);
1720 ret = mdt_mfd_close(info, mfd);
1721 if (repbody != NULL)
1722 rc = mdt_handle_last_unlink(info, o, ma);
1723 mdt_empty_transno(info, rc);
1724 mdt_object_put(info->mti_env, o);
1726 if (repbody != NULL) {
1727 mdt_client_compatibility(info);
1728 rc = mdt_fix_reply(info);
1731 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
1732 RETURN(err_serious(-ENOMEM));
1734 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
1735 OBD_FAIL_MDS_CLOSE_NET_REP))
1736 info->mti_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
1737 RETURN(rc ? rc : ret);
1741 * DONE_WRITING rpc handler.
1743 * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()),
1744 * only those DONE_WRITING rpc will be replayed which really wrote smth on disk,
1745 * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just
1746 * skip attributes and reconstruct the reply here.
1748 int mdt_done_writing(struct mdt_thread_info *info)
1750 struct ptlrpc_request *req = mdt_info_req(info);
1751 struct mdt_body *repbody = NULL;
1752 struct mdt_export_data *med;
1753 struct mdt_file_data *mfd;
1757 rc = req_capsule_server_pack(info->mti_pill);
1759 RETURN(err_serious(rc));
1761 repbody = req_capsule_server_get(info->mti_pill,
1763 repbody->eadatasize = 0;
1764 repbody->aclsize = 0;
1766 /* Done Writing may come with the Size-on-MDS update. Unpack it. */
1767 rc = mdt_close_unpack(info);
1769 RETURN(err_serious(rc));
1771 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL))
1772 RETURN(lustre_msg_get_status(req->rq_repmsg));
1774 med = &info->mti_exp->exp_mdt_data;
1775 spin_lock(&med->med_open_lock);
1776 mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
1778 spin_unlock(&med->med_open_lock);
1779 CDEBUG(D_INODE, "no handle for done write: fid = "DFID
1780 ": cookie = "LPX64" ioepoch = "LPU64"\n",
1781 PFID(info->mti_rr.rr_fid1),
1782 info->mti_ioepoch->handle.cookie,
1783 info->mti_ioepoch->ioepoch);
1784 /* If this is a replay, reconstruct the transno. */
1785 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
1786 rc = info->mti_ioepoch->flags & MF_SOM_AU ?
1788 mdt_empty_transno(info, rc);
1794 LASSERT(mfd->mfd_mode == MDS_FMODE_EPOCH ||
1795 mfd->mfd_mode == MDS_FMODE_TRUNC);
1796 class_handle_unhash(&mfd->mfd_handle);
1797 cfs_list_del_init(&mfd->mfd_list);
1798 spin_unlock(&med->med_open_lock);
1800 /* Set EPOCH CLOSE flag if not set by client. */
1801 info->mti_ioepoch->flags |= MF_EPOCH_CLOSE;
1802 info->mti_attr.ma_valid = 0;
1804 info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
1805 OBD_ALLOC_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
1806 if (info->mti_attr.ma_lmm == NULL)
1809 rc = mdt_mfd_close(info, mfd);
1811 OBD_FREE_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
1812 mdt_empty_transno(info, rc);