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, 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(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, clean SOM xattr.
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, bool enable)
226 struct md_object *next = mdt_object_child(obj);
230 CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64
231 " on "DFID".\n", enable ? "update" : "disabling",
232 ioepoch, PFID(mdt_object_fid(obj)));
235 struct lu_buf *buf = &info->mti_buf;
236 struct som_attrs *attrs;
237 struct md_attr *ma = &info->mti_attr;
238 struct lu_attr *la = &ma->ma_attr;
239 struct obd_device *obd = info->mti_mdt->mdt_lut.lut_obd;
241 attrs = (struct som_attrs *)info->mti_xattr_buf;
242 CLASSERT(sizeof(info->mti_xattr_buf) >= sizeof(*attrs));
244 /* pack SOM attributes */
245 memset(attrs, 0, sizeof(*attrs));
246 attrs->som_ioepoch = ioepoch;
247 attrs->som_mountid = obd->u.obt.obt_mount_count;
248 if ((la->la_valid & LA_SIZE) != 0)
249 attrs->som_size = la->la_size;
250 if ((la->la_valid & LA_BLOCKS) != 0)
251 attrs->som_blocks = la->la_blocks;
252 lustre_som_swab(attrs);
254 /* update SOM attributes */
256 buf->lb_len = sizeof(*attrs);
257 rc = mo_xattr_set(info->mti_env, next, buf, XATTR_NAME_SOM, 0);
259 /* delete SOM attributes */
260 rc = mo_xattr_del(info->mti_env, next, XATTR_NAME_SOM);
266 /** Perform the eviction specific actions on ioepoch close. */
267 static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info,
268 struct mdt_object *o)
272 mutex_lock(&o->mot_ioepoch_mutex);
273 CDEBUG(D_INODE, "Eviction. Closing IOepoch "LPU64" on "DFID". "
274 "Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)),
275 o->mot_ioepoch_count);
276 o->mot_ioepoch_count--;
278 /* If eviction occured set MOF_SOM_RECOV,
279 * if no other epoch holders, disable SOM on disk. */
280 o->mot_flags |= MOF_SOM_CHANGE | MOF_SOM_RECOV;
281 if (!mdt_ioepoch_opened(o)) {
282 rc = mdt_som_attr_set(info, o, o->mot_ioepoch, MDT_SOM_DISABLE);
283 mdt_object_som_enable(o, o->mot_ioepoch);
285 mutex_unlock(&o->mot_ioepoch_mutex);
290 * Perform the replay specific actions on ioepoch close.
291 * Skip SOM attribute update if obtained and just forget about the inode state
292 * for the last ioepoch holder. The SOM cache is invalidated on MDS failure.
294 static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info,
295 struct mdt_object *o)
297 int rc = MDT_IOEPOCH_CLOSED;
300 mutex_lock(&o->mot_ioepoch_mutex);
301 CDEBUG(D_INODE, "Replay. Closing epoch "LPU64" on "DFID". Count %d\n",
302 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
303 o->mot_ioepoch_count--;
305 /* Get an info from the replayed request if client is supposed
306 * to send an Attibute Update, reconstruct @rc if so */
307 if (info->mti_ioepoch->flags & MF_SOM_AU)
308 rc = MDT_IOEPOCH_GETATTR;
310 if (!mdt_ioepoch_opened(o))
311 mdt_object_som_enable(o, info->mti_ioepoch->ioepoch);
312 mutex_unlock(&o->mot_ioepoch_mutex);
318 * Regular file IOepoch close.
319 * Closes the ioepoch, checks the object state, apply obtained attributes and
320 * re-enable SOM on the object, if possible. Also checks if the recovery is
321 * needed and packs OBD_MD_FLGETATTRLOCK flag into the reply to force the client
322 * to obtain SOM attributes under the server-side OST locks.
325 * MDT_IOEPOCH_CLOSED if ioepoch is closed.
326 * MDT_IOEPOCH_GETATTR if ioepoch is closed but another SOM update is needed.
328 static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info,
329 struct mdt_object *o)
331 struct md_attr *tmp_ma;
335 int rc = 0, ret = MDT_IOEPOCH_CLOSED;
338 la = &info->mti_attr.ma_attr;
339 achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE);
341 mutex_lock(&o->mot_ioepoch_mutex);
342 o->mot_ioepoch_count--;
344 tmp_ma = &info->mti_u.som.attr;
345 tmp_ma->ma_lmm = info->mti_attr.ma_lmm;
346 tmp_ma->ma_lmm_size = info->mti_attr.ma_lmm_size;
347 tmp_ma->ma_som = &info->mti_u.som.data;
348 tmp_ma->ma_need = MA_INODE | MA_LOV | MA_SOM;
349 tmp_ma->ma_valid = 0;
350 rc = mdt_attr_get_complex(info, o, tmp_ma);
354 /* Check the on-disk SOM state. */
355 if (o->mot_flags & MOF_SOM_RECOV)
357 else if (!(o->mot_flags & MOF_SOM_CREATED) &&
358 !(tmp_ma->ma_valid & MA_SOM))
361 CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
362 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
364 opened = mdt_ioepoch_opened(o);
366 * If IOEpoch is not opened, check if a Size-on-MDS update is needed.
367 * Skip the check for file with no LOV or for unlink files.
369 if (!opened && tmp_ma->ma_valid & MA_LOV &&
370 !(tmp_ma->ma_valid & MA_INODE && tmp_ma->ma_attr.la_nlink == 0)) {
372 /* If some previous writer was evicted, re-ask the
373 * client for attributes. Even if attributes are
374 * provided, we cannot believe in them.
375 * Another use case is that there is no SOM cache on
376 * disk -- first access with SOM or there was an MDS
378 ret = MDT_IOEPOCH_GETATTR;
379 else if (o->mot_flags & MOF_SOM_CHANGE)
380 /* Some previous writer changed the attribute.
381 * Do not believe to the current Size-on-MDS
382 * update, re-ask client. */
383 ret = MDT_IOEPOCH_GETATTR;
384 else if (!(la->la_valid & LA_SIZE) && achange)
385 /* Attributes were changed by the last writer
386 * only but no Size-on-MDS update is received.*/
387 ret = MDT_IOEPOCH_GETATTR;
390 if (achange || ret == MDT_IOEPOCH_GETATTR)
391 o->mot_flags |= MOF_SOM_CHANGE;
393 /* If epoch ends and relable SOM attributes are obtained, update them.
394 * Create SOM ea for new files even if there is no attributes obtained
395 * (0-length file). */
396 if (ret == MDT_IOEPOCH_CLOSED && !opened) {
397 if (achange || o->mot_flags & MOF_SOM_CREATED) {
398 LASSERT(achange || !(la->la_valid & LA_SIZE));
399 rc = mdt_som_attr_set(info, o, o->mot_ioepoch,
401 /* Avoid the following setattrs of these attributes,
402 * e.g. for atime update. */
403 info->mti_attr.ma_valid = 0;
405 mdt_object_som_enable(o, o->mot_ioepoch);
408 mutex_unlock(&o->mot_ioepoch_mutex);
409 /* If recovery is needed, tell the client to perform GETATTR under
411 if (ret == MDT_IOEPOCH_GETATTR && recovery) {
412 struct mdt_body *rep;
413 rep = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
414 rep->valid |= OBD_MD_FLGETATTRLOCK;
420 mutex_unlock(&o->mot_ioepoch_mutex);
425 * Close IOEpoch (opened file or MDS_FMODE_EPOCH state). It happens if:
426 * - a client closes the IOEpoch;
427 * - a client eviction occured.
429 * MDT_IOEPOCH_OPENED if the client does not close IOEpoch.
430 * MDT_IOEPOCH_CLOSED if the client closes IOEpoch.
431 * MDT_IOEPOCH_GETATTR if the client closes IOEpoch but another SOM attribute
434 static int mdt_ioepoch_close(struct mdt_thread_info *info, struct mdt_object *o)
436 struct ptlrpc_request *req = mdt_info_req(info);
439 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
440 !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
443 LASSERT(o->mot_ioepoch_count);
444 LASSERT(info->mti_ioepoch == NULL ||
445 info->mti_ioepoch->ioepoch == o->mot_ioepoch);
447 /* IOEpoch is closed only if client tells about it or eviction occures.
448 * In the replay case, always close the epoch. */
450 RETURN(mdt_ioepoch_close_on_eviction(info, o));
451 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
452 RETURN(mdt_ioepoch_close_on_replay(info, o));
453 if (info->mti_ioepoch->flags & MF_EPOCH_CLOSE)
454 RETURN(mdt_ioepoch_close_reg(info, o));
455 /* IO epoch is not closed. */
456 RETURN(MDT_IOEPOCH_OPENED);
460 * Close MDS_FMODE_SOM state, when IOEpoch is already closed and we are waiting
461 * for attribute update. It happens if:
462 * - SOM Attribute Update is obtained;
463 * - the client failed to obtain it and informs MDS about it;
464 * - a client eviction occured.
465 * Apply obtained attributes for the 1st case, wipe out the on-disk SOM
468 int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o)
470 struct ptlrpc_request *req = mdt_info_req(info);
472 int act = MDT_SOM_ENABLE;
476 LASSERT(!req || info->mti_ioepoch);
477 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
478 !S_ISREG(lu_object_attr(&o->mot_obj.mo_lu)))
481 /* No size whereas MF_SOM_CHANGE is set means client failed to
482 * obtain ost attributes, drop the SOM cache on disk if so. */
484 (info->mti_ioepoch &&
485 info->mti_ioepoch->flags & MF_SOM_CHANGE &&
486 !(info->mti_attr.ma_attr.la_valid & LA_SIZE)))
487 act = MDT_SOM_DISABLE;
489 mutex_lock(&o->mot_ioepoch_mutex);
490 /* Mark the object it is the recovery state if we failed to obtain
492 if (act == MDT_SOM_DISABLE)
493 o->mot_flags |= MOF_SOM_RECOV;
495 if (!mdt_ioepoch_opened(o)) {
496 ioepoch = info->mti_ioepoch ?
497 info->mti_ioepoch->ioepoch : o->mot_ioepoch;
499 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
500 rc = mdt_som_attr_set(info, o, ioepoch, act);
501 mdt_object_som_enable(o, ioepoch);
503 mutex_unlock(&o->mot_ioepoch_mutex);
507 int mdt_write_read(struct mdt_object *o)
511 mutex_lock(&o->mot_ioepoch_mutex);
512 rc = o->mot_writecount;
513 mutex_unlock(&o->mot_ioepoch_mutex);
517 int mdt_write_get(struct mdt_object *o)
521 mutex_lock(&o->mot_ioepoch_mutex);
522 if (o->mot_writecount < 0)
526 mutex_unlock(&o->mot_ioepoch_mutex);
530 void mdt_write_put(struct mdt_object *o)
533 mutex_lock(&o->mot_ioepoch_mutex);
535 mutex_unlock(&o->mot_ioepoch_mutex);
539 static int mdt_write_deny(struct mdt_object *o)
543 mutex_lock(&o->mot_ioepoch_mutex);
544 if (o->mot_writecount > 0)
548 mutex_unlock(&o->mot_ioepoch_mutex);
552 static void mdt_write_allow(struct mdt_object *o)
555 mutex_lock(&o->mot_ioepoch_mutex);
557 mutex_unlock(&o->mot_ioepoch_mutex);
561 /* there can be no real transaction so prepare the fake one */
562 static void mdt_empty_transno(struct mdt_thread_info *info, int rc)
564 struct mdt_device *mdt = info->mti_mdt;
565 struct ptlrpc_request *req = mdt_info_req(info);
566 struct tg_export_data *ted;
567 struct lsd_client_data *lcd;
570 /* transaction has occurred already */
571 if (lustre_msg_get_transno(req->rq_repmsg) != 0)
574 spin_lock(&mdt->mdt_lut.lut_translock);
576 if (info->mti_transno != 0) {
577 struct obd_export *exp = req->rq_export;
579 CERROR("%s: replay trans "LPU64" NID %s: rc = %d\n",
580 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name,
582 libcfs_nid2str(exp->exp_connection->c_peer.nid),
586 } else if (info->mti_transno == 0) {
587 info->mti_transno = ++mdt->mdt_lut.lut_last_transno;
589 /* should be replay */
590 if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
591 mdt->mdt_lut.lut_last_transno = info->mti_transno;
593 spin_unlock(&mdt->mdt_lut.lut_translock);
595 CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n",
597 req->rq_export->exp_obd->obd_last_committed);
599 req->rq_transno = info->mti_transno;
600 lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
602 /* update lcd in memory only for resent cases */
603 ted = &req->rq_export->exp_target_data;
605 mutex_lock(&ted->ted_lcd_lock);
607 if (info->mti_transno < lcd->lcd_last_transno &&
608 info->mti_transno != 0) {
609 /* This should happen during replay. Do not update
610 * last rcvd info if replay req transno < last transno,
611 * otherwise the following resend(after replay) can not
612 * be checked correctly by xid */
613 mutex_unlock(&ted->ted_lcd_lock);
614 CDEBUG(D_HA, "%s: transno = "LPU64" < last_transno = "LPU64"\n",
615 mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name,
616 info->mti_transno, lcd->lcd_last_transno);
620 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
621 lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
622 if (info->mti_transno != 0)
623 lcd->lcd_last_close_transno = info->mti_transno;
624 lcd->lcd_last_close_xid = req->rq_xid;
625 lcd->lcd_last_close_result = rc;
627 /* VBR: save versions in last_rcvd for reconstruct. */
628 __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
630 lcd->lcd_pre_versions[0] = pre_versions[0];
631 lcd->lcd_pre_versions[1] = pre_versions[1];
632 lcd->lcd_pre_versions[2] = pre_versions[2];
633 lcd->lcd_pre_versions[3] = pre_versions[3];
635 if (info->mti_transno != 0)
636 lcd->lcd_last_transno = info->mti_transno;
638 lcd->lcd_last_xid = req->rq_xid;
639 lcd->lcd_last_result = rc;
640 lcd->lcd_last_data = info->mti_opdata;
642 mutex_unlock(&ted->ted_lcd_lock);
647 void mdt_mfd_set_mode(struct mdt_file_data *mfd, int mode)
649 LASSERT(mfd != NULL);
651 CDEBUG(D_HA, "Change mfd %p mode 0x%x->0x%x\n",
652 mfd, (unsigned int)mfd->mfd_mode, (unsigned int)mode);
654 mfd->mfd_mode = mode;
657 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
658 struct mdt_object *o, __u64 flags, int created)
660 struct ptlrpc_request *req = mdt_info_req(info);
661 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
662 struct mdt_file_data *mfd;
663 struct md_attr *ma = &info->mti_attr;
664 struct lu_attr *la = &ma->ma_attr;
665 struct mdt_body *repbody;
666 int rc = 0, isdir, isreg;
669 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
671 isreg = S_ISREG(la->la_mode);
672 isdir = S_ISDIR(la->la_mode);
673 if (isreg && !(ma->ma_valid & MA_LOV)) {
675 * No EA, check whether it is will set regEA and dirEA since in
676 * above attr get, these size might be zero, so reset it, to
677 * retrieve the MD after create obj.
679 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
682 /* in replay case, p == NULL */
683 rc = mdt_create_data(info, p, o);
688 CDEBUG(D_INODE, "after open, ma_valid bit = "LPX64" lmm_size = %d\n",
689 ma->ma_valid, ma->ma_lmm_size);
691 if (ma->ma_valid & MA_LOV) {
692 LASSERT(ma->ma_lmm_size != 0);
693 repbody->eadatasize = ma->ma_lmm_size;
695 repbody->valid |= OBD_MD_FLDIREA;
697 repbody->valid |= OBD_MD_FLEASIZE;
700 if (flags & FMODE_WRITE) {
701 rc = mdt_write_get(o);
703 mdt_ioepoch_open(info, o, created);
704 repbody->ioepoch = o->mot_ioepoch;
706 } else if (flags & MDS_FMODE_EXEC) {
707 /* if file is released, we can't deny write because we must
708 * restore (write) it to access it.*/
709 if ((ma->ma_valid & MA_HSM) &&
710 (ma->ma_hsm.mh_flags & HS_RELEASED))
713 rc = mdt_write_deny(o);
718 rc = mo_open(info->mti_env, mdt_object_child(o),
719 created ? flags | MDS_OPEN_CREATED : flags);
726 * Keep a reference on this object for this open, and is
727 * released by mdt_mfd_close().
729 mdt_object_get(info->mti_env, o);
732 * @flags is always not zero. At least it should be FMODE_READ,
733 * FMODE_WRITE or MDS_FMODE_EXEC.
738 mdt_mfd_set_mode(mfd, flags);
741 mfd->mfd_xid = req->rq_xid;
744 if (req_is_replay(req)) {
745 struct mdt_file_data *old_mfd;
746 /* Check wheather old cookie already exist in
747 * the list, becasue when do recovery, client
748 * might be disconnected from server, and
749 * restart replay, so there maybe some orphan
750 * mfd here, we should remove them */
751 LASSERT(info->mti_rr.rr_handle != NULL);
752 old_mfd = mdt_handle2mfd(info, info->mti_rr.rr_handle);
754 CDEBUG(D_HA, "del orph mfd %p fid=("DFID") "
755 "cookie=" LPX64"\n", mfd,
756 PFID(mdt_object_fid(mfd->mfd_object)),
757 info->mti_rr.rr_handle->cookie);
758 spin_lock(&med->med_open_lock);
759 class_handle_unhash(&old_mfd->mfd_handle);
760 cfs_list_del_init(&old_mfd->mfd_list);
761 spin_unlock(&med->med_open_lock);
762 /* no attr update for that close */
764 ma->ma_valid |= MA_FLAGS;
765 ma->ma_attr_flags |= MDS_RECOV_OPEN;
766 mdt_mfd_close(info, old_mfd);
767 ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
768 ma->ma_valid &= ~MA_FLAGS;
770 CDEBUG(D_HA, "Store old cookie "LPX64" in new mfd\n",
771 info->mti_rr.rr_handle->cookie);
772 mfd->mfd_old_handle.cookie =
773 info->mti_rr.rr_handle->cookie;
775 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
777 if (req->rq_export->exp_disconnected) {
778 spin_lock(&med->med_open_lock);
779 class_handle_unhash(&mfd->mfd_handle);
780 cfs_list_del_init(&mfd->mfd_list);
781 spin_unlock(&med->med_open_lock);
782 mdt_mfd_close(info, mfd);
784 spin_lock(&med->med_open_lock);
785 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
786 spin_unlock(&med->med_open_lock);
789 mdt_empty_transno(info, rc);
791 GOTO(err_out, rc = -ENOMEM);
797 if (flags & FMODE_WRITE)
798 /* XXX We also need to close io epoch here.
799 * See LU-1220 - green */
801 else if (flags & FMODE_EXEC)
806 int mdt_finish_open(struct mdt_thread_info *info,
807 struct mdt_object *p, struct mdt_object *o,
808 __u64 flags, int created, struct ldlm_reply *rep)
810 struct ptlrpc_request *req = mdt_info_req(info);
811 struct obd_export *exp = req->rq_export;
812 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
813 struct md_attr *ma = &info->mti_attr;
814 struct lu_attr *la = &ma->ma_attr;
815 struct mdt_file_data *mfd;
816 struct mdt_body *repbody;
818 int isreg, isdir, islnk;
822 LASSERT(ma->ma_valid & MA_INODE);
824 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
826 isreg = S_ISREG(la->la_mode);
827 isdir = S_ISDIR(la->la_mode);
828 islnk = S_ISLNK(la->la_mode);
829 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
831 /* LU-2275, simulate broken behaviour (esp. prevalent in
832 * pre-2.4 servers where a very strange reply is sent on error
833 * that looks like it was actually almost succesful and a failure at the
835 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) {
836 mdt_set_disposition(info, rep, DISP_OPEN_LOCK | \
837 DISP_OPEN_OPEN | DISP_LOOKUP_NEG | \
842 if (exp_connect_rmtclient(exp)) {
843 void *buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
845 rc = mdt_pack_remote_perm(info, o, buf);
847 repbody->valid &= ~OBD_MD_FLRMTPERM;
848 repbody->aclsize = 0;
850 repbody->valid |= OBD_MD_FLRMTPERM;
851 repbody->aclsize = sizeof(struct mdt_remote_perm);
854 #ifdef CONFIG_FS_POSIX_ACL
855 else if (exp_connect_flags(exp) & OBD_CONNECT_ACL) {
856 const struct lu_env *env = info->mti_env;
857 struct md_object *next = mdt_object_child(o);
858 struct lu_buf *buf = &info->mti_buf;
860 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
861 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
863 if (buf->lb_len > 0) {
864 rc = mo_xattr_get(env, next, buf,
865 XATTR_NAME_ACL_ACCESS);
867 if (rc == -ENODATA) {
868 repbody->aclsize = 0;
869 repbody->valid |= OBD_MD_FLACL;
871 } else if (rc == -EOPNOTSUPP) {
874 CERROR("got acl size: %d\n", rc);
877 repbody->aclsize = rc;
878 repbody->valid |= OBD_MD_FLACL;
885 if (info->mti_mdt->mdt_opts.mo_mds_capa &&
886 exp_connect_flags(exp) & OBD_CONNECT_MDS_CAPA) {
887 struct lustre_capa *capa;
889 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
891 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
892 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
895 repbody->valid |= OBD_MD_FLMDSCAPA;
897 if (info->mti_mdt->mdt_opts.mo_oss_capa &&
898 exp_connect_flags(exp) & OBD_CONNECT_OSS_CAPA &&
899 S_ISREG(lu_object_attr(&o->mot_obj.mo_lu))) {
900 struct lustre_capa *capa;
902 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
904 capa->lc_opc = CAPA_OPC_OSS_DEFAULT | capa_open_opc(flags);
905 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
908 repbody->valid |= OBD_MD_FLOSSCAPA;
912 * If we are following a symlink, don't open; and do not return open
913 * handle for special nodes as client required.
915 if (islnk || (!isreg && !isdir &&
916 (exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) {
917 lustre_msg_set_transno(req->rq_repmsg, 0);
922 * We need to return the existing object's fid back, so it is done here,
923 * after preparing the reply.
925 if (!created && (flags & MDS_OPEN_EXCL) && (flags & MDS_OPEN_CREAT))
928 /* This can't be done earlier, we need to return reply body */
930 if (flags & (MDS_OPEN_CREAT | FMODE_WRITE)) {
931 /* We are trying to create or write an existing dir. */
934 } else if (flags & MDS_OPEN_DIRECTORY)
937 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
938 OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE)) {
943 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
944 spin_lock(&med->med_open_lock);
945 cfs_list_for_each(t, &med->med_open_head) {
946 mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list);
947 if (mfd->mfd_xid == req->rq_xid)
951 spin_unlock(&med->med_open_lock);
954 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
955 /*set repbody->ea_size for resent case*/
956 if (ma->ma_valid & MA_LOV) {
957 LASSERT(ma->ma_lmm_size != 0);
958 repbody->eadatasize = ma->ma_lmm_size;
960 repbody->valid |= OBD_MD_FLDIREA;
962 repbody->valid |= OBD_MD_FLEASIZE;
964 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
969 rc = mdt_mfd_open(info, p, o, flags, created);
971 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
976 extern void mdt_req_from_lcd(struct ptlrpc_request *req,
977 struct lsd_client_data *lcd);
979 void mdt_reconstruct_open(struct mdt_thread_info *info,
980 struct mdt_lock_handle *lhc)
982 const struct lu_env *env = info->mti_env;
983 struct mdt_device *mdt = info->mti_mdt;
984 struct req_capsule *pill = info->mti_pill;
985 struct ptlrpc_request *req = mdt_info_req(info);
986 struct tg_export_data *ted = &req->rq_export->exp_target_data;
987 struct lsd_client_data *lcd = ted->ted_lcd;
988 struct md_attr *ma = &info->mti_attr;
989 struct mdt_reint_record *rr = &info->mti_rr;
990 __u32 flags = info->mti_spec.sp_cr_flags;
991 struct ldlm_reply *ldlm_rep;
992 struct mdt_object *parent;
993 struct mdt_object *child;
994 struct mdt_body *repbody;
998 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
999 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
1000 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1002 ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
1003 ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD,
1005 ma->ma_need = MA_INODE | MA_HSM;
1006 if (ma->ma_lmm_size > 0)
1007 ma->ma_need |= MA_LOV;
1011 mdt_req_from_lcd(req, lcd);
1012 mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data);
1014 CDEBUG(D_INODE, "This is reconstruct open: disp="LPX64", result=%d\n",
1015 ldlm_rep->lock_policy_res1, req->rq_status);
1017 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) &&
1018 req->rq_status != 0)
1019 /* We did not create successfully, return error to client. */
1020 GOTO(out, rc = req->rq_status);
1022 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE)) {
1023 struct obd_export *exp = req->rq_export;
1025 * We failed after creation, but we do not know in which step
1026 * we failed. So try to check the child object.
1028 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1029 if (IS_ERR(parent)) {
1030 rc = PTR_ERR(parent);
1031 LCONSOLE_WARN("Parent "DFID" lookup error %d."
1032 " Evicting client %s with export %s.\n",
1033 PFID(rr->rr_fid1), rc,
1034 obd_uuid2str(&exp->exp_client_uuid),
1035 obd_export_nid2str(exp));
1036 mdt_export_evict(exp);
1039 child = mdt_object_find(env, mdt, rr->rr_fid2);
1040 if (IS_ERR(child)) {
1041 rc = PTR_ERR(child);
1042 LCONSOLE_WARN("Child "DFID" lookup error %d."
1043 " Evicting client %s with export %s.\n",
1044 PFID(mdt_object_fid(child)), rc,
1045 obd_uuid2str(&exp->exp_client_uuid),
1046 obd_export_nid2str(exp));
1047 mdt_object_put(env, parent);
1048 mdt_export_evict(exp);
1052 if (unlikely(mdt_object_remote(child))) {
1053 /* the child object was created on remote server */
1054 repbody->fid1 = *rr->rr_fid2;
1055 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1058 if (mdt_object_exists(child)) {
1059 mdt_set_capainfo(info, 1, rr->rr_fid2,
1061 rc = mdt_attr_get_complex(info, child, ma);
1063 rc = mdt_finish_open(info, parent,
1067 /* the child does not exist, we should do
1069 mdt_object_put(env, parent);
1070 mdt_object_put(env, child);
1071 GOTO(regular_open, 0);
1074 mdt_object_put(env, parent);
1075 mdt_object_put(env, child);
1079 /* We did not try to create, so we are a pure open */
1080 rc = mdt_reint_open(info, lhc);
1085 req->rq_status = rc;
1086 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
1087 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
1090 int mdt_open_by_fid(struct mdt_thread_info* info,
1091 struct ldlm_reply *rep)
1093 __u32 flags = info->mti_spec.sp_cr_flags;
1094 struct mdt_reint_record *rr = &info->mti_rr;
1095 struct md_attr *ma = &info->mti_attr;
1096 struct mdt_object *o;
1100 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
1102 RETURN(rc = PTR_ERR(o));
1104 if (unlikely(mdt_object_remote(o))) {
1105 /* the child object was created on remote server */
1106 struct mdt_body *repbody;
1108 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
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);
1116 if (mdt_object_exists(o)) {
1117 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1121 rc = mdt_attr_get_complex(info, o, ma);
1123 rc = mdt_finish_open(info, NULL, o, flags, 0,
1130 mdt_object_put(info->mti_env, o);
1134 /* lock object for open */
1135 static int mdt_object_open_lock(struct mdt_thread_info *info,
1136 struct mdt_object *obj,
1137 struct mdt_lock_handle *lhc,
1140 struct md_attr *ma = &info->mti_attr;
1141 __u64 open_flags = info->mti_spec.sp_cr_flags;
1142 ldlm_mode_t lm = LCK_CR;
1143 bool try_layout = false;
1144 bool create_layout = false;
1149 if (open_flags & MDS_OPEN_LOCK) {
1150 if (open_flags & FMODE_WRITE)
1152 /* if file is released, we can't deny write because we must
1153 * restore (write) it to access it. */
1154 else if ((open_flags & MDS_FMODE_EXEC) &&
1155 !((ma->ma_valid & MA_HSM) &&
1156 (ma->ma_hsm.mh_flags & HS_RELEASED)))
1161 *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN;
1164 if (S_ISREG(lu_object_attr(&obj->mot_obj.mo_lu))) {
1165 if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) &&
1166 md_should_create(open_flags))
1167 create_layout = true;
1168 if (exp_connect_layout(info->mti_exp) && !create_layout &&
1169 ma->ma_need & MA_LOV)
1173 mdt_lock_handle_init(lhc);
1174 mdt_lock_reg_init(lhc, lm);
1176 /* one problem to return layout lock on open is that it may result
1177 * in too many layout locks cached on the client side. */
1178 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) {
1179 /* return lookup lock to validate inode at the client side,
1180 * this is pretty important otherwise mdt will return layout
1181 * lock for each open.
1182 * However this is a double-edged sword because changing
1183 * permission will revoke huge # of LOOKUP locks. */
1184 *ibits |= MDS_INODELOCK_LAYOUT | MDS_INODELOCK_LOOKUP;
1185 if (!mdt_object_lock_try(info, obj, lhc, *ibits,
1187 *ibits &= ~(MDS_INODELOCK_LAYOUT|MDS_INODELOCK_LOOKUP);
1189 rc = mdt_object_lock(info, obj, lhc, *ibits,
1192 } else if (*ibits != 0) {
1193 rc = mdt_object_lock(info, obj, lhc, *ibits, MDT_CROSS_LOCK);
1196 CDEBUG(D_INODE, "Requested bits lock:"DFID ", ibits = "LPX64
1197 ", open_flags = "LPO64", try_layout = %d, rc = %d\n",
1198 PFID(mdt_object_fid(obj)), *ibits, open_flags, try_layout, rc);
1200 /* will change layout, revoke layout locks by enqueuing EX lock. */
1201 if (rc == 0 && create_layout) {
1202 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
1204 CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID
1205 ", open_flags = "LPO64"\n",
1206 PFID(mdt_object_fid(obj)), open_flags);
1208 LASSERT(!try_layout);
1209 mdt_lock_handle_init(ll);
1210 mdt_lock_reg_init(ll, LCK_EX);
1211 rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT,
1214 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2);
1220 static void mdt_object_open_unlock(struct mdt_thread_info *info,
1221 struct mdt_object *obj,
1222 struct mdt_lock_handle *lhc,
1223 __u64 ibits, int rc)
1225 __u64 open_flags = info->mti_spec.sp_cr_flags;
1226 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
1228 /* Release local layout lock - the layout lock put in MDT_LH_LAYOUT
1229 * will never return to client side. */
1230 if (lustre_handle_is_used(&ll->mlh_reg_lh)) {
1231 LASSERT(!(ibits & MDS_INODELOCK_LAYOUT));
1232 mdt_object_unlock(info, obj, ll, 1);
1235 /* Cross-ref case, the lock should be returned to the client */
1236 if (ibits == 0 || rc == -EREMOTE)
1239 if (!(open_flags & MDS_OPEN_LOCK) && !(ibits & MDS_INODELOCK_LAYOUT)) {
1240 /* for the open request, the lock will only return to client
1241 * if open or layout lock is granted. */
1245 mdt_object_unlock(info, obj, lhc, 1);
1248 int mdt_open_by_fid_lock(struct mdt_thread_info *info, struct ldlm_reply *rep,
1249 struct mdt_lock_handle *lhc)
1251 const struct lu_env *env = info->mti_env;
1252 struct mdt_device *mdt = info->mti_mdt;
1253 __u32 flags = info->mti_spec.sp_cr_flags;
1254 struct mdt_reint_record *rr = &info->mti_rr;
1255 struct md_attr *ma = &info->mti_attr;
1256 struct mdt_object *parent= NULL;
1257 struct mdt_object *o;
1262 if (md_should_create(flags) && !(flags & MDS_OPEN_HAS_EA)) {
1263 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1264 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1265 if (IS_ERR(parent)) {
1266 CDEBUG(D_INODE, "Fail to find parent "DFID
1267 " for anonymous created %ld, try to"
1268 " use server-side parent.\n",
1269 PFID(rr->rr_fid1), PTR_ERR(parent));
1274 ma->ma_need |= MA_PFID;
1277 o = mdt_object_find(env, mdt, rr->rr_fid2);
1279 RETURN(rc = PTR_ERR(o));
1281 if (mdt_object_remote(o)) {
1282 CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n",
1283 info->mti_mdt->mdt_md_dev.md_lu_dev.ld_obd->obd_name,
1285 GOTO(out, rc = -EREMOTE);
1286 } else if (!mdt_object_exists(o)) {
1287 mdt_set_disposition(info, rep, (DISP_LOOKUP_EXECD |
1289 GOTO(out, rc = -ENOENT);
1292 mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1294 rc = mdt_attr_get_complex(info, o, ma);
1298 rc = mdt_object_open_lock(info, o, lhc, &ibits);
1302 if (ma->ma_valid & MA_PFID) {
1303 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1304 if (IS_ERR(parent)) {
1305 CDEBUG(D_INODE, "Fail to find parent "DFID
1306 " for anonymous created %ld, try to"
1307 " use system default.\n",
1308 PFID(&ma->ma_pfid), PTR_ERR(parent));
1313 rc = mdt_finish_open(info, parent, o, flags, 0, rep);
1315 mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
1316 if (flags & MDS_OPEN_LOCK)
1317 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1322 mdt_object_open_unlock(info, o, lhc, ibits, rc);
1323 mdt_object_put(env, o);
1325 mdt_object_put(env, parent);
1329 int mdt_pin(struct mdt_thread_info* info)
1332 RETURN(err_serious(-EOPNOTSUPP));
1335 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1336 int mdt_cross_open(struct mdt_thread_info* info,
1337 const struct lu_fid *fid,
1338 struct ldlm_reply *rep, __u32 flags)
1340 struct md_attr *ma = &info->mti_attr;
1341 struct mdt_object *o;
1345 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1347 RETURN(rc = PTR_ERR(o));
1349 if (mdt_object_remote(o)) {
1350 /* Something is wrong here, the object is on another MDS! */
1351 CERROR("%s: "DFID" isn't on this server!: rc = %d\n",
1352 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1353 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1355 "Object isn't on this server! FLD error?\n");
1358 if (mdt_object_exists(o)) {
1359 /* Do permission check for cross-open. */
1360 rc = mo_permission(info->mti_env, NULL,
1361 mdt_object_child(o),
1362 NULL, flags | MDS_OPEN_CROSS);
1366 mdt_set_capainfo(info, 0, fid, BYPASS_CAPA);
1367 rc = mdt_attr_get_complex(info, o, ma);
1369 rc = mdt_finish_open(info, NULL, o, flags, 0,
1373 * Something is wrong here. lookup was positive but
1374 * there is no object!
1376 CERROR("%s: "DFID" doesn't exist!: rc = %d\n",
1377 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1382 mdt_object_put(info->mti_env, o);
1386 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1388 struct mdt_device *mdt = info->mti_mdt;
1389 struct ptlrpc_request *req = mdt_info_req(info);
1390 struct mdt_object *parent;
1391 struct mdt_object *child;
1392 struct mdt_lock_handle *lh;
1393 struct ldlm_reply *ldlm_rep;
1394 struct mdt_body *repbody;
1395 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1396 struct md_attr *ma = &info->mti_attr;
1397 __u64 create_flags = info->mti_spec.sp_cr_flags;
1399 struct mdt_reint_record *rr = &info->mti_rr;
1400 struct lu_name *lname;
1406 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1407 (obd_timeout + 1) / 4);
1409 mdt_counter_incr(req, LPROC_MDT_OPEN);
1410 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1412 ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
1413 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD,
1415 ma->ma_need = MA_INODE;
1416 if (ma->ma_lmm_size > 0)
1417 ma->ma_need |= MA_LOV;
1421 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1422 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1424 if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) {
1425 CERROR("file join is not supported anymore.\n");
1426 GOTO(out, result = err_serious(-EOPNOTSUPP));
1428 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1430 if ((create_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1431 info->mti_spec.u.sp_ea.eadata == NULL)
1432 GOTO(out, result = err_serious(-EINVAL));
1434 CDEBUG(D_INODE, "I am going to open "DFID"/(%s->"DFID") "
1435 "cr_flag="LPO64" mode=0%06o msg_flag=0x%x\n",
1436 PFID(rr->rr_fid1), rr->rr_name,
1437 PFID(rr->rr_fid2), create_flags,
1438 ma->ma_attr.la_mode, msg_flags);
1439 if (info->mti_cross_ref) {
1440 /* This is cross-ref open */
1441 mdt_set_disposition(info, ldlm_rep,
1442 (DISP_IT_EXECD | DISP_LOOKUP_EXECD |
1444 result = mdt_cross_open(info, rr->rr_fid1, ldlm_rep,
1447 } else if (req_is_replay(req) ||
1448 (req->rq_export->exp_libclient && create_flags & MDS_OPEN_HAS_EA)) {
1449 /* This is a replay request or from liblustre with ea. */
1450 result = mdt_open_by_fid(info, ldlm_rep);
1452 if (result != -ENOENT) {
1453 if (req->rq_export->exp_libclient &&
1454 create_flags & MDS_OPEN_HAS_EA)
1455 GOTO(out, result = 0);
1458 /* We didn't find the correct object, so we need to re-create it
1459 * via a regular replay. */
1460 if (!(create_flags & MDS_OPEN_CREAT)) {
1461 DEBUG_REQ(D_ERROR, req,
1462 "OPEN & CREAT not in open replay/by_fid.");
1463 GOTO(out, result = -EFAULT);
1465 CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
1466 } else if ((rr->rr_namelen == 0 && create_flags & MDS_OPEN_LOCK) ||
1467 (create_flags & MDS_OPEN_BY_FID)) {
1468 result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
1469 if ((result != -ENOENT && !(create_flags & MDS_OPEN_CREAT)) &&
1472 if (unlikely(rr->rr_namelen == 0))
1473 GOTO(out, result = -EINVAL);
1474 CDEBUG(D_INFO, "No object(2), continue as regular open.\n");
1477 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1478 GOTO(out, result = err_serious(-ENOMEM));
1480 mdt_set_disposition(info, ldlm_rep,
1481 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1483 lh = &info->mti_lh[MDT_LH_PARENT];
1484 mdt_lock_pdo_init(lh, (create_flags & MDS_OPEN_CREAT) ?
1485 LCK_PW : LCK_PR, rr->rr_name, rr->rr_namelen);
1487 parent = mdt_object_find_lock(info, rr->rr_fid1, lh,
1488 MDS_INODELOCK_UPDATE);
1490 GOTO(out, result = PTR_ERR(parent));
1492 /* get and check version of parent */
1493 result = mdt_version_get_check(info, parent, 0);
1495 GOTO(out_parent, result);
1497 fid_zero(child_fid);
1499 lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen);
1500 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1501 lname, child_fid, &info->mti_spec);
1502 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1503 "looking for "DFID"/%s, result fid="DFID"\n",
1504 PFID(mdt_object_fid(parent)), rr->rr_name, PFID(child_fid));
1506 if (result != 0 && result != -ENOENT && result != -ESTALE)
1507 GOTO(out_parent, result);
1509 if (result == -ENOENT || result == -ESTALE) {
1510 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1511 if (result == -ESTALE) {
1513 * -ESTALE means the parent is a dead(unlinked) dir, so
1514 * it should return -ENOENT to in accordance with the
1515 * original mds implementaion.
1517 GOTO(out_parent, result = -ENOENT);
1519 if (!(create_flags & MDS_OPEN_CREAT))
1520 GOTO(out_parent, result);
1521 *child_fid = *info->mti_rr.rr_fid2;
1522 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1524 /* In the function below, .hs_keycmp resolves to
1525 * lu_obj_hop_keycmp() */
1526 /* coverity[overrun-buffer-val] */
1527 child = mdt_object_new(info->mti_env, mdt, child_fid);
1530 * Check for O_EXCL is moved to the mdt_finish_open(), we need to
1531 * return FID back in that case.
1533 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1534 child = mdt_object_find(info->mti_env, mdt, child_fid);
1537 GOTO(out_parent, result = PTR_ERR(child));
1539 /** check version of child */
1540 rc = mdt_version_get_check(info, child, 1);
1542 GOTO(out_child, result = rc);
1544 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1545 if (result == -ENOENT) {
1546 if (mdt_object_obf(parent))
1547 GOTO(out_child, result = -EPERM);
1549 /* save versions in reply */
1550 mdt_version_get_save(info, parent, 0);
1551 mdt_version_get_save(info, child, 1);
1553 /* version of child will be changed */
1554 info->mti_mos = child;
1556 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1557 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1559 /* Let lower layers know what is lock mode on directory. */
1560 info->mti_spec.sp_cr_mode =
1561 mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
1564 * Do not perform lookup sanity check. We know that name does
1567 info->mti_spec.sp_cr_lookup = 0;
1568 info->mti_spec.sp_feat = &dt_directory_features;
1570 result = mdo_create(info->mti_env,
1571 mdt_object_child(parent),
1573 mdt_object_child(child),
1576 if (result == -ERESTART) {
1577 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1578 GOTO(out_child, result);
1581 /* XXX: we should call this once, see few lines below */
1583 result = mdt_attr_get_complex(info, child, ma);
1586 GOTO(out_child, result);
1591 * The object is on remote node, return its FID for remote open.
1593 if (mdt_object_remote(child)) {
1595 * Check if this lock already was sent to client and
1596 * this is resent case. For resent case do not take lock
1597 * again, use what is already granted.
1599 LASSERT(lhc != NULL);
1601 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1602 struct ldlm_lock *lock;
1604 LASSERT(msg_flags & MSG_RESENT);
1606 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1608 CERROR("Invalid lock handle "LPX64"\n",
1609 lhc->mlh_reg_lh.cookie);
1612 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1613 &lock->l_resource->lr_name));
1614 LDLM_LOCK_PUT(lock);
1617 mdt_lock_handle_init(lhc);
1618 mdt_lock_reg_init(lhc, LCK_PR);
1620 rc = mdt_object_lock(info, child, lhc,
1621 MDS_INODELOCK_LOOKUP,
1624 repbody->fid1 = *mdt_object_fid(child);
1625 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1630 GOTO(out_child, result);
1632 if (mdt_object_exists(child)) {
1633 /* We have to get attr & LOV EA & HSM for this
1635 ma->ma_need |= MA_HSM;
1636 result = mdt_attr_get_complex(info, child, ma);
1638 /*object non-exist!!!*/
1644 LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh));
1646 /* get openlock if this is not replay and if a client requested it */
1647 if (!req_is_replay(req)) {
1648 rc = mdt_object_open_lock(info, child, lhc, &ibits);
1650 GOTO(out_child, result = rc);
1651 } else if (create_flags & MDS_OPEN_LOCK) {
1653 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1657 /* Try to open it now. */
1658 rc = mdt_finish_open(info, parent, child, create_flags,
1662 /* openlock will be released if mdt_finish_open failed */
1663 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1667 ma->ma_cookie_size = 0;
1668 rc = mdo_unlink(info->mti_env,
1669 mdt_object_child(parent),
1670 mdt_object_child(child),
1674 CERROR("Error in cleanup of open\n");
1675 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1680 mdt_object_open_unlock(info, child, lhc, ibits, result);
1681 mdt_object_put(info->mti_env, child);
1683 mdt_object_unlock_put(info, parent, lh, result || !created);
1685 if (result && result != -EREMOTE)
1686 lustre_msg_set_transno(req->rq_repmsg, 0);
1690 #define MFD_CLOSED(mode) (((mode) & ~(MDS_FMODE_EPOCH | MDS_FMODE_SOM | \
1691 MDS_FMODE_TRUNC)) == MDS_FMODE_CLOSED)
1693 static int mdt_mfd_closed(struct mdt_file_data *mfd)
1695 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_mode));
1698 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
1700 struct mdt_object *o = mfd->mfd_object;
1701 struct md_object *next = mdt_object_child(o);
1702 struct md_attr *ma = &info->mti_attr;
1703 int ret = MDT_IOEPOCH_CLOSED;
1708 mode = mfd->mfd_mode;
1710 if ((mode & FMODE_WRITE) || (mode & MDS_FMODE_TRUNC)) {
1712 ret = mdt_ioepoch_close(info, o);
1713 } else if (mode & MDS_FMODE_EXEC) {
1715 } else if (mode & MDS_FMODE_EPOCH) {
1716 ret = mdt_ioepoch_close(info, o);
1717 } else if (mode & MDS_FMODE_SOM) {
1718 ret = mdt_som_au_close(info, o);
1721 /* Update atime on close only. */
1722 if ((mode & MDS_FMODE_EXEC || mode & FMODE_READ || mode & FMODE_WRITE)
1723 && (ma->ma_valid & MA_INODE) && (ma->ma_attr.la_valid & LA_ATIME)) {
1724 /* Set the atime only. */
1725 ma->ma_valid = MA_INODE;
1726 ma->ma_attr.la_valid = LA_ATIME;
1727 rc = mo_attr_set(info->mti_env, next, ma);
1730 /* If file data is modified, add the dirty flag.
1732 * If MDS_CLOSE_CLEANUP is set, this file is being closed due to an
1733 * eviction, file could have been modified and now dirty
1734 * regarding to HSM archive, check this!
1735 * The logic here is to mark a file dirty if there's a chance it was
1736 * dirtied before the client was evicted, so that we don't have to wait
1737 * for a release attempt before finding out the file was actually dirty
1738 * and fail the release. Aggressively marking it dirty here will cause
1739 * the policy engine to attempt to re-archive it; when rearchiving, we
1740 * can compare the current version to the LMA data_version and make the
1741 * archive request into a noop if it's not actually dirty.
1743 if ((ma->ma_attr_flags & MDS_DATA_MODIFIED) ||
1744 ((ma->ma_attr_flags & MDS_CLOSE_CLEANUP) &&
1745 (mode & (FMODE_WRITE|MDS_FMODE_TRUNC))))
1746 rc = mdt_add_dirty_flag(info, o, ma);
1748 ma->ma_need |= MA_INODE;
1749 ma->ma_valid &= ~MA_INODE;
1751 if (!MFD_CLOSED(mode))
1752 rc = mo_close(info->mti_env, next, ma, mode);
1754 if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) {
1755 struct mdt_export_data *med;
1757 /* The IOepoch is still opened or SOM update is needed.
1758 * Put mfd back into the list. */
1759 LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
1760 mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ?
1761 MDS_FMODE_EPOCH : MDS_FMODE_SOM);
1763 LASSERT(mdt_info_req(info));
1764 med = &mdt_info_req(info)->rq_export->exp_mdt_data;
1765 spin_lock(&med->med_open_lock);
1766 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
1767 class_handle_hash_back(&mfd->mfd_handle);
1768 spin_unlock(&med->med_open_lock);
1770 if (ret == MDT_IOEPOCH_OPENED) {
1774 CDEBUG(D_INODE, "Size-on-MDS attribute update is "
1775 "needed on "DFID"\n", PFID(mdt_object_fid(o)));
1779 mdt_object_put(info->mti_env, o);
1782 RETURN(rc ? rc : ret);
1785 int mdt_close(struct mdt_thread_info *info)
1787 struct mdt_export_data *med;
1788 struct mdt_file_data *mfd;
1789 struct mdt_object *o;
1790 struct md_attr *ma = &info->mti_attr;
1791 struct mdt_body *repbody = NULL;
1792 struct ptlrpc_request *req = mdt_info_req(info);
1796 mdt_counter_incr(req, LPROC_MDT_CLOSE);
1797 /* Close may come with the Size-on-MDS update. Unpack it. */
1798 rc = mdt_close_unpack(info);
1800 RETURN(err_serious(rc));
1802 LASSERT(info->mti_ioepoch);
1804 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
1805 info->mti_mdt->mdt_max_mdsize);
1806 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
1807 info->mti_mdt->mdt_max_cookiesize);
1808 rc = req_capsule_server_pack(info->mti_pill);
1809 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
1810 mdt_client_compatibility(info);
1812 mdt_fix_reply(info);
1813 mdt_exit_ucred(info);
1814 RETURN(lustre_msg_get_status(req->rq_repmsg));
1817 /* Continue to close handle even if we can not pack reply */
1819 repbody = req_capsule_server_get(info->mti_pill,
1821 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
1823 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
1826 ma->ma_cookie = req_capsule_server_get(info->mti_pill,
1828 ma->ma_cookie_size = req_capsule_get_size(info->mti_pill,
1831 ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE;
1832 repbody->eadatasize = 0;
1833 repbody->aclsize = 0;
1835 rc = err_serious(rc);
1838 med = &req->rq_export->exp_mdt_data;
1839 spin_lock(&med->med_open_lock);
1840 mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
1841 if (mdt_mfd_closed(mfd)) {
1842 spin_unlock(&med->med_open_lock);
1843 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
1844 ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1),
1845 info->mti_ioepoch->handle.cookie);
1846 /** not serious error since bug 3633 */
1849 class_handle_unhash(&mfd->mfd_handle);
1850 cfs_list_del_init(&mfd->mfd_list);
1851 spin_unlock(&med->med_open_lock);
1853 /* Do not lose object before last unlink. */
1854 o = mfd->mfd_object;
1855 mdt_object_get(info->mti_env, o);
1856 ret = mdt_mfd_close(info, mfd);
1857 if (repbody != NULL)
1858 rc = mdt_handle_last_unlink(info, o, ma);
1859 mdt_empty_transno(info, rc);
1860 mdt_object_put(info->mti_env, o);
1862 if (repbody != NULL) {
1863 mdt_client_compatibility(info);
1864 rc = mdt_fix_reply(info);
1867 mdt_exit_ucred(info);
1868 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
1869 RETURN(err_serious(-ENOMEM));
1871 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
1872 OBD_FAIL_MDS_CLOSE_NET_REP))
1873 info->mti_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
1874 RETURN(rc ? rc : ret);
1878 * DONE_WRITING rpc handler.
1880 * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()),
1881 * only those DONE_WRITING rpc will be replayed which really wrote smth on disk,
1882 * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just
1883 * skip attributes and reconstruct the reply here.
1885 int mdt_done_writing(struct mdt_thread_info *info)
1887 struct ptlrpc_request *req = mdt_info_req(info);
1888 struct mdt_body *repbody = NULL;
1889 struct mdt_export_data *med;
1890 struct mdt_file_data *mfd;
1894 rc = req_capsule_server_pack(info->mti_pill);
1896 RETURN(err_serious(rc));
1898 repbody = req_capsule_server_get(info->mti_pill,
1900 repbody->eadatasize = 0;
1901 repbody->aclsize = 0;
1903 /* Done Writing may come with the Size-on-MDS update. Unpack it. */
1904 rc = mdt_close_unpack(info);
1906 RETURN(err_serious(rc));
1908 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
1909 mdt_exit_ucred(info);
1910 RETURN(lustre_msg_get_status(req->rq_repmsg));
1913 med = &info->mti_exp->exp_mdt_data;
1914 spin_lock(&med->med_open_lock);
1915 mfd = mdt_handle2mfd(info, &info->mti_ioepoch->handle);
1917 spin_unlock(&med->med_open_lock);
1918 CDEBUG(D_INODE, "no handle for done write: fid = "DFID
1919 ": cookie = "LPX64" ioepoch = "LPU64"\n",
1920 PFID(info->mti_rr.rr_fid1),
1921 info->mti_ioepoch->handle.cookie,
1922 info->mti_ioepoch->ioepoch);
1923 /* If this is a replay, reconstruct the transno. */
1924 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
1925 rc = info->mti_ioepoch->flags & MF_SOM_AU ?
1927 mdt_empty_transno(info, rc);
1930 GOTO(error_ucred, rc);
1933 LASSERT(mfd->mfd_mode == MDS_FMODE_EPOCH ||
1934 mfd->mfd_mode == MDS_FMODE_TRUNC);
1935 class_handle_unhash(&mfd->mfd_handle);
1936 cfs_list_del_init(&mfd->mfd_list);
1937 spin_unlock(&med->med_open_lock);
1939 /* Set EPOCH CLOSE flag if not set by client. */
1940 info->mti_ioepoch->flags |= MF_EPOCH_CLOSE;
1941 info->mti_attr.ma_valid = 0;
1943 info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
1944 OBD_ALLOC_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
1945 if (info->mti_attr.ma_lmm == NULL)
1946 GOTO(error_ucred, rc = -ENOMEM);
1948 rc = mdt_mfd_close(info, mfd);
1950 OBD_FREE_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
1951 mdt_empty_transno(info, rc);
1953 mdt_exit_ucred(info);