4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdt/mdt_open.c
38 * Lustre Metadata Target (mdt) open/close file handling
40 * Author: Huang Hua <huanghua@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_MDS
45 #include <lustre_acl.h>
46 #include <lustre_mds.h>
47 #include "mdt_internal.h"
49 /* we do nothing because we do not have refcount now */
50 static void mdt_mfd_get(void *mfdp)
54 static struct portals_handle_ops mfd_handle_ops = {
55 .hop_addref = mdt_mfd_get,
59 /* Create a new mdt_file_data struct, initialize it,
60 * and insert it to global hash table */
61 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med)
63 struct mdt_file_data *mfd;
68 CFS_INIT_LIST_HEAD(&mfd->mfd_handle.h_link);
69 mfd->mfd_handle.h_owner = med;
70 CFS_INIT_LIST_HEAD(&mfd->mfd_list);
71 class_handle_hash(&mfd->mfd_handle, &mfd_handle_ops);
78 * Find the mfd pointed to by handle in global hash table.
79 * In case of replay the handle is obsoleted
80 * but mfd can be found in mfd list by that handle
82 struct mdt_file_data *mdt_handle2mfd(struct mdt_export_data *med,
83 const struct lustre_handle *handle,
84 bool is_replay_or_resent)
86 struct mdt_file_data *mfd;
89 LASSERT(handle != NULL);
90 mfd = class_handle2object(handle->cookie, med);
91 /* during dw/setattr replay the mfd can be found by old handle */
92 if (mfd == NULL && is_replay_or_resent) {
93 cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
94 if (mfd->mfd_old_handle.cookie == handle->cookie)
104 void mdt_mfd_free(struct mdt_file_data *mfd)
106 LASSERT(cfs_list_empty(&mfd->mfd_list));
107 OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle);
110 static int mdt_create_data(struct mdt_thread_info *info,
111 struct mdt_object *p, struct mdt_object *o)
113 struct md_op_spec *spec = &info->mti_spec;
114 struct md_attr *ma = &info->mti_attr;
118 if (!md_should_create(spec->sp_cr_flags))
121 ma->ma_need = MA_INODE | MA_LOV;
123 mutex_lock(&o->mot_lov_mutex);
124 if (!(o->mot_flags & MOF_LOV_CREATED)) {
125 if (p != NULL && (fid_is_obf(mdt_object_fid(p)) ||
126 fid_is_dot_lustre(mdt_object_fid(p))))
127 GOTO(unlock, rc = -EPERM);
129 rc = mdo_create_data(info->mti_env,
130 p ? mdt_object_child(p) : NULL,
131 mdt_object_child(o), spec, ma);
133 rc = mdt_attr_get_complex(info, o, ma);
135 if (rc == 0 && ma->ma_valid & MA_LOV)
136 o->mot_flags |= MOF_LOV_CREATED;
139 mutex_unlock(&o->mot_lov_mutex);
143 static int mdt_ioepoch_opened(struct mdt_object *mo)
145 return mo->mot_ioepoch_count;
148 int mdt_object_is_som_enabled(struct mdt_object *mo)
150 return !mo->mot_ioepoch;
154 * Re-enable Size-on-MDS.
155 * Call under ->mot_ioepoch_mutex.
157 static void mdt_object_som_enable(struct mdt_object *mo, __u64 ioepoch)
159 if (ioepoch == mo->mot_ioepoch) {
160 LASSERT(!mdt_ioepoch_opened(mo));
167 * Open the IOEpoch. It is allowed if @writecount is not negative.
168 * The epoch and writecount handling is performed under the mot_ioepoch_mutex.
170 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
173 struct mdt_device *mdt = info->mti_mdt;
178 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
179 !S_ISREG(lu_object_attr(&o->mot_obj)))
182 mutex_lock(&o->mot_ioepoch_mutex);
183 if (mdt_ioepoch_opened(o)) {
184 /* Epoch continues even if there is no writers yet. */
185 CDEBUG(D_INODE, "continue epoch "LPU64" for "DFID"\n",
186 o->mot_ioepoch, PFID(mdt_object_fid(o)));
188 /* XXX: ->mdt_ioepoch is not initialized at the mount */
189 spin_lock(&mdt->mdt_ioepoch_lock);
190 if (mdt->mdt_ioepoch < info->mti_replayepoch)
191 mdt->mdt_ioepoch = info->mti_replayepoch;
193 if (info->mti_replayepoch)
194 o->mot_ioepoch = info->mti_replayepoch;
195 else if (++mdt->mdt_ioepoch == IOEPOCH_INVAL)
196 o->mot_ioepoch = ++mdt->mdt_ioepoch;
198 o->mot_ioepoch = mdt->mdt_ioepoch;
200 spin_unlock(&mdt->mdt_ioepoch_lock);
202 CDEBUG(D_INODE, "starting epoch "LPU64" for "DFID"\n",
203 o->mot_ioepoch, PFID(mdt_object_fid(o)));
205 o->mot_flags |= MOF_SOM_CREATED;
208 o->mot_ioepoch_count++;
209 mutex_unlock(&o->mot_ioepoch_mutex);
211 /* Cancel Size-on-MDS attributes cached on clients for the open case.
212 * In the truncate case, see mdt_reint_setattr(). */
213 if (cancel && (info->mti_rr.rr_fid1 != NULL)) {
214 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_CHILD];
215 mdt_lock_reg_init(lh, LCK_EX);
216 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_UPDATE,
219 mdt_object_unlock(info, o, lh, 1);
225 * Update SOM on-disk attributes.
226 * If enabling, write update inodes and lustre-ea with the proper IOEpoch,
227 * mountid and attributes. If disabling, clean SOM xattr.
228 * Call under ->mot_ioepoch_mutex.
230 static int mdt_som_attr_set(struct mdt_thread_info *info,
231 struct mdt_object *obj, __u64 ioepoch, bool enable)
233 struct md_object *next = mdt_object_child(obj);
237 CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64
238 " on "DFID".\n", enable ? "update" : "disabling",
239 ioepoch, PFID(mdt_object_fid(obj)));
242 struct lu_buf *buf = &info->mti_buf;
243 struct som_attrs *attrs;
244 struct md_attr *ma = &info->mti_attr;
245 struct lu_attr *la = &ma->ma_attr;
246 struct obd_device *obd = info->mti_mdt->mdt_lut.lut_obd;
248 attrs = (struct som_attrs *)info->mti_xattr_buf;
249 CLASSERT(sizeof(info->mti_xattr_buf) >= sizeof(*attrs));
251 /* pack SOM attributes */
252 memset(attrs, 0, sizeof(*attrs));
253 attrs->som_ioepoch = ioepoch;
254 attrs->som_mountid = obd->u.obt.obt_mount_count;
255 if ((la->la_valid & LA_SIZE) != 0)
256 attrs->som_size = la->la_size;
257 if ((la->la_valid & LA_BLOCKS) != 0)
258 attrs->som_blocks = la->la_blocks;
259 lustre_som_swab(attrs);
261 /* update SOM attributes */
263 buf->lb_len = sizeof(*attrs);
264 rc = mo_xattr_set(info->mti_env, next, buf, XATTR_NAME_SOM, 0);
266 /* delete SOM attributes */
267 rc = mo_xattr_del(info->mti_env, next, XATTR_NAME_SOM);
273 /** Perform the eviction specific actions on ioepoch close. */
274 static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info,
275 struct mdt_object *o)
279 mutex_lock(&o->mot_ioepoch_mutex);
280 CDEBUG(D_INODE, "Eviction. Closing IOepoch "LPU64" on "DFID". "
281 "Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)),
282 o->mot_ioepoch_count);
283 o->mot_ioepoch_count--;
285 /* If eviction occured set MOF_SOM_RECOV,
286 * if no other epoch holders, disable SOM on disk. */
287 o->mot_flags |= MOF_SOM_CHANGE | MOF_SOM_RECOV;
288 if (!mdt_ioepoch_opened(o)) {
289 rc = mdt_som_attr_set(info, o, o->mot_ioepoch, MDT_SOM_DISABLE);
290 mdt_object_som_enable(o, o->mot_ioepoch);
292 mutex_unlock(&o->mot_ioepoch_mutex);
297 * Perform the replay specific actions on ioepoch close.
298 * Skip SOM attribute update if obtained and just forget about the inode state
299 * for the last ioepoch holder. The SOM cache is invalidated on MDS failure.
301 static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info,
302 struct mdt_object *o)
304 int rc = MDT_IOEPOCH_CLOSED;
307 mutex_lock(&o->mot_ioepoch_mutex);
308 CDEBUG(D_INODE, "Replay. Closing epoch "LPU64" on "DFID". Count %d\n",
309 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
310 o->mot_ioepoch_count--;
312 /* Get an info from the replayed request if client is supposed
313 * to send an Attibute Update, reconstruct @rc if so */
314 if (info->mti_ioepoch->flags & MF_SOM_AU)
315 rc = MDT_IOEPOCH_GETATTR;
317 if (!mdt_ioepoch_opened(o))
318 mdt_object_som_enable(o, info->mti_ioepoch->ioepoch);
319 mutex_unlock(&o->mot_ioepoch_mutex);
325 * Regular file IOepoch close.
326 * Closes the ioepoch, checks the object state, apply obtained attributes and
327 * re-enable SOM on the object, if possible. Also checks if the recovery is
328 * needed and packs OBD_MD_FLGETATTRLOCK flag into the reply to force the client
329 * to obtain SOM attributes under the server-side OST locks.
332 * MDT_IOEPOCH_CLOSED if ioepoch is closed.
333 * MDT_IOEPOCH_GETATTR if ioepoch is closed but another SOM update is needed.
335 static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info,
336 struct mdt_object *o)
338 struct md_attr *tmp_ma;
342 int rc = 0, ret = MDT_IOEPOCH_CLOSED;
345 la = &info->mti_attr.ma_attr;
346 achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE);
348 mutex_lock(&o->mot_ioepoch_mutex);
349 o->mot_ioepoch_count--;
351 tmp_ma = &info->mti_u.som.attr;
352 tmp_ma->ma_lmm = info->mti_attr.ma_lmm;
353 tmp_ma->ma_lmm_size = info->mti_attr.ma_lmm_size;
354 tmp_ma->ma_som = &info->mti_u.som.data;
355 tmp_ma->ma_need = MA_INODE | MA_LOV | MA_SOM;
356 tmp_ma->ma_valid = 0;
357 rc = mdt_attr_get_complex(info, o, tmp_ma);
361 /* Check the on-disk SOM state. */
362 if (o->mot_flags & MOF_SOM_RECOV)
364 else if (!(o->mot_flags & MOF_SOM_CREATED) &&
365 !(tmp_ma->ma_valid & MA_SOM))
368 CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
369 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
371 opened = mdt_ioepoch_opened(o);
373 * If IOEpoch is not opened, check if a Size-on-MDS update is needed.
374 * Skip the check for file with no LOV or for unlink files.
376 if (!opened && tmp_ma->ma_valid & MA_LOV &&
377 !(tmp_ma->ma_valid & MA_INODE && tmp_ma->ma_attr.la_nlink == 0)) {
379 /* If some previous writer was evicted, re-ask the
380 * client for attributes. Even if attributes are
381 * provided, we cannot believe in them.
382 * Another use case is that there is no SOM cache on
383 * disk -- first access with SOM or there was an MDS
385 ret = MDT_IOEPOCH_GETATTR;
386 else if (o->mot_flags & MOF_SOM_CHANGE)
387 /* Some previous writer changed the attribute.
388 * Do not believe to the current Size-on-MDS
389 * update, re-ask client. */
390 ret = MDT_IOEPOCH_GETATTR;
391 else if (!(la->la_valid & LA_SIZE) && achange)
392 /* Attributes were changed by the last writer
393 * only but no Size-on-MDS update is received.*/
394 ret = MDT_IOEPOCH_GETATTR;
397 if (achange || ret == MDT_IOEPOCH_GETATTR)
398 o->mot_flags |= MOF_SOM_CHANGE;
400 /* If epoch ends and relable SOM attributes are obtained, update them.
401 * Create SOM ea for new files even if there is no attributes obtained
402 * (0-length file). */
403 if (ret == MDT_IOEPOCH_CLOSED && !opened) {
404 if (achange || o->mot_flags & MOF_SOM_CREATED) {
405 LASSERT(achange || !(la->la_valid & LA_SIZE));
406 rc = mdt_som_attr_set(info, o, o->mot_ioepoch,
408 /* Avoid the following setattrs of these attributes,
409 * e.g. for atime update. */
410 info->mti_attr.ma_valid = 0;
412 mdt_object_som_enable(o, o->mot_ioepoch);
415 mutex_unlock(&o->mot_ioepoch_mutex);
416 /* If recovery is needed, tell the client to perform GETATTR under
418 if (ret == MDT_IOEPOCH_GETATTR && recovery) {
419 struct mdt_body *rep;
420 rep = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
421 rep->valid |= OBD_MD_FLGETATTRLOCK;
427 mutex_unlock(&o->mot_ioepoch_mutex);
432 * Close IOEpoch (opened file or MDS_FMODE_EPOCH state). It happens if:
433 * - a client closes the IOEpoch;
434 * - a client eviction occured.
436 * MDT_IOEPOCH_OPENED if the client does not close IOEpoch.
437 * MDT_IOEPOCH_CLOSED if the client closes IOEpoch.
438 * MDT_IOEPOCH_GETATTR if the client closes IOEpoch but another SOM attribute
441 static int mdt_ioepoch_close(struct mdt_thread_info *info, struct mdt_object *o)
443 struct ptlrpc_request *req = mdt_info_req(info);
446 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
447 !S_ISREG(lu_object_attr(&o->mot_obj)))
450 LASSERT(o->mot_ioepoch_count);
451 LASSERT(info->mti_ioepoch == NULL ||
452 info->mti_ioepoch->ioepoch == o->mot_ioepoch);
454 /* IOEpoch is closed only if client tells about it or eviction occures.
455 * In the replay case, always close the epoch. */
457 RETURN(mdt_ioepoch_close_on_eviction(info, o));
458 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
459 RETURN(mdt_ioepoch_close_on_replay(info, o));
460 if (info->mti_ioepoch->flags & MF_EPOCH_CLOSE)
461 RETURN(mdt_ioepoch_close_reg(info, o));
462 /* IO epoch is not closed. */
463 RETURN(MDT_IOEPOCH_OPENED);
467 * Close MDS_FMODE_SOM state, when IOEpoch is already closed and we are waiting
468 * for attribute update. It happens if:
469 * - SOM Attribute Update is obtained;
470 * - the client failed to obtain it and informs MDS about it;
471 * - a client eviction occured.
472 * Apply obtained attributes for the 1st case, wipe out the on-disk SOM
475 int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o)
477 struct ptlrpc_request *req = mdt_info_req(info);
479 int act = MDT_SOM_ENABLE;
483 LASSERT(!req || info->mti_ioepoch);
484 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
485 !S_ISREG(lu_object_attr(&o->mot_obj)))
488 /* No size whereas MF_SOM_CHANGE is set means client failed to
489 * obtain ost attributes, drop the SOM cache on disk if so. */
491 (info->mti_ioepoch &&
492 info->mti_ioepoch->flags & MF_SOM_CHANGE &&
493 !(info->mti_attr.ma_attr.la_valid & LA_SIZE)))
494 act = MDT_SOM_DISABLE;
496 mutex_lock(&o->mot_ioepoch_mutex);
497 /* Mark the object it is the recovery state if we failed to obtain
499 if (act == MDT_SOM_DISABLE)
500 o->mot_flags |= MOF_SOM_RECOV;
502 if (!mdt_ioepoch_opened(o)) {
503 ioepoch = info->mti_ioepoch ?
504 info->mti_ioepoch->ioepoch : o->mot_ioepoch;
506 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
507 rc = mdt_som_attr_set(info, o, ioepoch, act);
508 mdt_object_som_enable(o, ioepoch);
510 mutex_unlock(&o->mot_ioepoch_mutex);
514 int mdt_write_read(struct mdt_object *o)
518 mutex_lock(&o->mot_ioepoch_mutex);
519 rc = o->mot_writecount;
520 mutex_unlock(&o->mot_ioepoch_mutex);
524 int mdt_write_get(struct mdt_object *o)
528 mutex_lock(&o->mot_ioepoch_mutex);
529 if (o->mot_writecount < 0)
533 mutex_unlock(&o->mot_ioepoch_mutex);
537 void mdt_write_put(struct mdt_object *o)
540 mutex_lock(&o->mot_ioepoch_mutex);
542 mutex_unlock(&o->mot_ioepoch_mutex);
546 static int mdt_write_deny(struct mdt_object *o)
550 mutex_lock(&o->mot_ioepoch_mutex);
551 if (o->mot_writecount > 0)
555 mutex_unlock(&o->mot_ioepoch_mutex);
559 static void mdt_write_allow(struct mdt_object *o)
562 mutex_lock(&o->mot_ioepoch_mutex);
564 mutex_unlock(&o->mot_ioepoch_mutex);
568 /* there can be no real transaction so prepare the fake one */
569 static void mdt_empty_transno(struct mdt_thread_info *info, int rc)
571 struct mdt_device *mdt = info->mti_mdt;
572 struct ptlrpc_request *req = mdt_info_req(info);
573 struct tg_export_data *ted;
574 struct lsd_client_data *lcd;
577 /* transaction has occurred already */
578 if (lustre_msg_get_transno(req->rq_repmsg) != 0)
581 spin_lock(&mdt->mdt_lut.lut_translock);
583 if (info->mti_transno != 0) {
584 struct obd_export *exp = req->rq_export;
586 CERROR("%s: replay trans "LPU64" NID %s: rc = %d\n",
587 mdt_obd_name(mdt), info->mti_transno,
588 libcfs_nid2str(exp->exp_connection->c_peer.nid),
590 spin_unlock(&mdt->mdt_lut.lut_translock);
593 } else if (info->mti_transno == 0) {
594 info->mti_transno = ++mdt->mdt_lut.lut_last_transno;
596 /* should be replay */
597 if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
598 mdt->mdt_lut.lut_last_transno = info->mti_transno;
600 spin_unlock(&mdt->mdt_lut.lut_translock);
602 CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n",
604 req->rq_export->exp_obd->obd_last_committed);
606 req->rq_transno = info->mti_transno;
607 lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
609 /* update lcd in memory only for resent cases */
610 ted = &req->rq_export->exp_target_data;
612 mutex_lock(&ted->ted_lcd_lock);
614 if (info->mti_transno < lcd->lcd_last_transno &&
615 info->mti_transno != 0) {
616 /* This should happen during replay. Do not update
617 * last rcvd info if replay req transno < last transno,
618 * otherwise the following resend(after replay) can not
619 * be checked correctly by xid */
620 mutex_unlock(&ted->ted_lcd_lock);
621 CDEBUG(D_HA, "%s: transno = "LPU64" < last_transno = "LPU64"\n",
622 mdt_obd_name(mdt), info->mti_transno,
623 lcd->lcd_last_transno);
627 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
628 lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
629 if (info->mti_transno != 0)
630 lcd->lcd_last_close_transno = info->mti_transno;
631 lcd->lcd_last_close_xid = req->rq_xid;
632 lcd->lcd_last_close_result = rc;
634 /* VBR: save versions in last_rcvd for reconstruct. */
635 __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
637 lcd->lcd_pre_versions[0] = pre_versions[0];
638 lcd->lcd_pre_versions[1] = pre_versions[1];
639 lcd->lcd_pre_versions[2] = pre_versions[2];
640 lcd->lcd_pre_versions[3] = pre_versions[3];
642 if (info->mti_transno != 0)
643 lcd->lcd_last_transno = info->mti_transno;
645 lcd->lcd_last_xid = req->rq_xid;
646 lcd->lcd_last_result = rc;
647 lcd->lcd_last_data = info->mti_opdata;
649 mutex_unlock(&ted->ted_lcd_lock);
654 void mdt_mfd_set_mode(struct mdt_file_data *mfd, __u64 mode)
656 LASSERT(mfd != NULL);
658 CDEBUG(D_HA, DFID " Change mfd mode "LPO64" -> "LPO64".\n",
659 PFID(mdt_object_fid(mfd->mfd_object)), mfd->mfd_mode, mode);
661 mfd->mfd_mode = mode;
664 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
665 struct mdt_object *o, __u64 flags, int created)
667 struct ptlrpc_request *req = mdt_info_req(info);
668 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
669 struct mdt_file_data *mfd;
670 struct md_attr *ma = &info->mti_attr;
671 struct lu_attr *la = &ma->ma_attr;
672 struct mdt_body *repbody;
673 int rc = 0, isdir, isreg;
676 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
678 isreg = S_ISREG(la->la_mode);
679 isdir = S_ISDIR(la->la_mode);
680 if (isreg && !(ma->ma_valid & MA_LOV) && !(flags & MDS_OPEN_RELEASE)) {
682 * No EA, check whether it is will set regEA and dirEA since in
683 * above attr get, these size might be zero, so reset it, to
684 * retrieve the MD after create obj.
686 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
689 /* in replay case, p == NULL */
690 rc = mdt_create_data(info, p, o);
695 CDEBUG(D_INODE, "after open, ma_valid bit = "LPX64" lmm_size = %d\n",
696 ma->ma_valid, ma->ma_lmm_size);
698 if (ma->ma_valid & MA_LOV) {
699 LASSERT(ma->ma_lmm_size != 0);
700 repbody->eadatasize = ma->ma_lmm_size;
702 repbody->valid |= OBD_MD_FLDIREA;
704 repbody->valid |= OBD_MD_FLEASIZE;
707 if (flags & FMODE_WRITE) {
708 rc = mdt_write_get(o);
710 mdt_ioepoch_open(info, o, created);
711 repbody->ioepoch = o->mot_ioepoch;
713 } else if (flags & MDS_FMODE_EXEC) {
714 /* if file is released, we can't deny write because we must
715 * restore (write) it to access it.*/
716 if ((ma->ma_valid & MA_HSM) &&
717 (ma->ma_hsm.mh_flags & HS_RELEASED))
720 rc = mdt_write_deny(o);
725 rc = mo_open(info->mti_env, mdt_object_child(o),
726 created ? flags | MDS_OPEN_CREATED : flags);
730 mfd = mdt_mfd_new(med);
732 GOTO(err_out, rc = -ENOMEM);
735 * Keep a reference on this object for this open, and is
736 * released by mdt_mfd_close().
738 mdt_object_get(info->mti_env, o);
740 mfd->mfd_xid = req->rq_xid;
743 * @flags is always not zero. At least it should be FMODE_READ,
744 * FMODE_WRITE or MDS_FMODE_EXEC.
749 mdt_mfd_set_mode(mfd, flags);
751 atomic_inc(&o->mot_open_count);
752 if (flags & MDS_OPEN_LEASE)
753 atomic_inc(&o->mot_lease_count);
756 if (req_is_replay(req)) {
757 struct mdt_file_data *old_mfd;
758 /* Check wheather old cookie already exist in
759 * the list, becasue when do recovery, client
760 * might be disconnected from server, and
761 * restart replay, so there maybe some orphan
762 * mfd here, we should remove them */
763 LASSERT(info->mti_rr.rr_handle != NULL);
764 old_mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle, true);
765 if (old_mfd != NULL) {
766 CDEBUG(D_HA, "delete orphan mfd = %p, fid = "DFID", "
767 "cookie = "LPX64"\n", mfd,
768 PFID(mdt_object_fid(mfd->mfd_object)),
769 info->mti_rr.rr_handle->cookie);
770 spin_lock(&med->med_open_lock);
771 class_handle_unhash(&old_mfd->mfd_handle);
772 cfs_list_del_init(&old_mfd->mfd_list);
773 spin_unlock(&med->med_open_lock);
774 /* no attr update for that close */
776 ma->ma_valid |= MA_FLAGS;
777 ma->ma_attr_flags |= MDS_RECOV_OPEN;
778 mdt_mfd_close(info, old_mfd);
779 ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
780 ma->ma_valid &= ~MA_FLAGS;
783 CDEBUG(D_HA, "Store old cookie "LPX64" in new mfd\n",
784 info->mti_rr.rr_handle->cookie);
786 mfd->mfd_old_handle.cookie = info->mti_rr.rr_handle->cookie;
789 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
791 if (req->rq_export->exp_disconnected) {
792 spin_lock(&med->med_open_lock);
793 class_handle_unhash(&mfd->mfd_handle);
794 cfs_list_del_init(&mfd->mfd_list);
795 spin_unlock(&med->med_open_lock);
796 mdt_mfd_close(info, mfd);
798 spin_lock(&med->med_open_lock);
799 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
800 spin_unlock(&med->med_open_lock);
803 mdt_empty_transno(info, rc);
808 if (flags & FMODE_WRITE)
809 /* XXX We also need to close io epoch here.
810 * See LU-1220 - green */
812 else if (flags & FMODE_EXEC)
817 int mdt_finish_open(struct mdt_thread_info *info,
818 struct mdt_object *p, struct mdt_object *o,
819 __u64 flags, int created, struct ldlm_reply *rep)
821 struct ptlrpc_request *req = mdt_info_req(info);
822 struct obd_export *exp = req->rq_export;
823 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
824 struct md_attr *ma = &info->mti_attr;
825 struct lu_attr *la = &ma->ma_attr;
826 struct mdt_file_data *mfd;
827 struct mdt_body *repbody;
829 int isreg, isdir, islnk;
833 LASSERT(ma->ma_valid & MA_INODE);
835 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
837 isreg = S_ISREG(la->la_mode);
838 isdir = S_ISDIR(la->la_mode);
839 islnk = S_ISLNK(la->la_mode);
840 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
842 /* LU-2275, simulate broken behaviour (esp. prevalent in
843 * pre-2.4 servers where a very strange reply is sent on error
844 * that looks like it was actually almost succesful and a failure at the
846 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) {
847 mdt_set_disposition(info, rep, DISP_OPEN_OPEN |
851 if (flags & MDS_OPEN_LOCK)
852 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
857 if (exp_connect_rmtclient(exp)) {
858 void *buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
860 rc = mdt_pack_remote_perm(info, o, buf);
862 repbody->valid &= ~OBD_MD_FLRMTPERM;
863 repbody->aclsize = 0;
865 repbody->valid |= OBD_MD_FLRMTPERM;
866 repbody->aclsize = sizeof(struct mdt_remote_perm);
869 #ifdef CONFIG_FS_POSIX_ACL
870 else if (exp_connect_flags(exp) & OBD_CONNECT_ACL) {
871 const struct lu_env *env = info->mti_env;
872 struct md_object *next = mdt_object_child(o);
873 struct lu_buf *buf = &info->mti_buf;
875 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
876 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
878 if (buf->lb_len > 0) {
879 rc = mo_xattr_get(env, next, buf,
880 XATTR_NAME_ACL_ACCESS);
882 if (rc == -ENODATA) {
883 repbody->aclsize = 0;
884 repbody->valid |= OBD_MD_FLACL;
886 } else if (rc == -EOPNOTSUPP) {
889 CERROR("got acl size: %d\n", rc);
892 repbody->aclsize = rc;
893 repbody->valid |= OBD_MD_FLACL;
900 if (info->mti_mdt->mdt_opts.mo_mds_capa &&
901 exp_connect_flags(exp) & OBD_CONNECT_MDS_CAPA) {
902 struct lustre_capa *capa;
904 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
906 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
907 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
910 repbody->valid |= OBD_MD_FLMDSCAPA;
913 if (info->mti_mdt->mdt_opts.mo_oss_capa &&
914 exp_connect_flags(exp) & OBD_CONNECT_OSS_CAPA &&
915 S_ISREG(lu_object_attr(&o->mot_obj))) {
916 struct lustre_capa *capa;
918 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
920 capa->lc_opc = CAPA_OPC_OSS_DEFAULT | capa_open_opc(flags);
921 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
924 repbody->valid |= OBD_MD_FLOSSCAPA;
928 * If we are following a symlink, don't open; and do not return open
929 * handle for special nodes as client required.
931 if (islnk || (!isreg && !isdir &&
932 (exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) {
933 lustre_msg_set_transno(req->rq_repmsg, 0);
938 * We need to return the existing object's fid back, so it is done here,
939 * after preparing the reply.
941 if (!created && (flags & MDS_OPEN_EXCL) && (flags & MDS_OPEN_CREAT))
944 /* This can't be done earlier, we need to return reply body */
946 if (flags & (MDS_OPEN_CREAT | FMODE_WRITE)) {
947 /* We are trying to create or write an existing dir. */
950 } else if (flags & MDS_OPEN_DIRECTORY)
953 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
954 OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE)) {
959 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
960 spin_lock(&med->med_open_lock);
961 cfs_list_for_each(t, &med->med_open_head) {
962 mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list);
963 if (mfd->mfd_xid == req->rq_xid)
967 spin_unlock(&med->med_open_lock);
970 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
971 /*set repbody->ea_size for resent case*/
972 if (ma->ma_valid & MA_LOV) {
973 LASSERT(ma->ma_lmm_size != 0);
974 repbody->eadatasize = ma->ma_lmm_size;
976 repbody->valid |= OBD_MD_FLDIREA;
978 repbody->valid |= OBD_MD_FLEASIZE;
980 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
985 rc = mdt_mfd_open(info, p, o, flags, created);
987 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
992 extern void mdt_req_from_lcd(struct ptlrpc_request *req,
993 struct lsd_client_data *lcd);
995 void mdt_reconstruct_open(struct mdt_thread_info *info,
996 struct mdt_lock_handle *lhc)
998 const struct lu_env *env = info->mti_env;
999 struct mdt_device *mdt = info->mti_mdt;
1000 struct req_capsule *pill = info->mti_pill;
1001 struct ptlrpc_request *req = mdt_info_req(info);
1002 struct tg_export_data *ted = &req->rq_export->exp_target_data;
1003 struct lsd_client_data *lcd = ted->ted_lcd;
1004 struct md_attr *ma = &info->mti_attr;
1005 struct mdt_reint_record *rr = &info->mti_rr;
1006 __u64 flags = info->mti_spec.sp_cr_flags;
1007 struct ldlm_reply *ldlm_rep;
1008 struct mdt_object *parent;
1009 struct mdt_object *child;
1010 struct mdt_body *repbody;
1014 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1015 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
1016 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1018 ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
1019 ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD,
1021 ma->ma_need = MA_INODE | MA_HSM;
1022 if (ma->ma_lmm_size > 0)
1023 ma->ma_need |= MA_LOV;
1027 mdt_req_from_lcd(req, lcd);
1028 mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data);
1030 CDEBUG(D_INODE, "This is reconstruct open: disp="LPX64", result=%d\n",
1031 ldlm_rep->lock_policy_res1, req->rq_status);
1033 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) &&
1034 req->rq_status != 0)
1035 /* We did not create successfully, return error to client. */
1036 GOTO(out, rc = req->rq_status);
1038 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE)) {
1039 struct obd_export *exp = req->rq_export;
1041 * We failed after creation, but we do not know in which step
1042 * we failed. So try to check the child object.
1044 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1045 if (IS_ERR(parent)) {
1046 rc = PTR_ERR(parent);
1047 LCONSOLE_WARN("Parent "DFID" lookup error %d."
1048 " Evicting client %s with export %s.\n",
1049 PFID(rr->rr_fid1), rc,
1050 obd_uuid2str(&exp->exp_client_uuid),
1051 obd_export_nid2str(exp));
1052 mdt_export_evict(exp);
1055 child = mdt_object_find(env, mdt, rr->rr_fid2);
1056 if (IS_ERR(child)) {
1057 rc = PTR_ERR(child);
1058 LCONSOLE_WARN("Child "DFID" lookup error %d."
1059 " Evicting client %s with export %s.\n",
1060 PFID(mdt_object_fid(child)), rc,
1061 obd_uuid2str(&exp->exp_client_uuid),
1062 obd_export_nid2str(exp));
1063 mdt_object_put(env, parent);
1064 mdt_export_evict(exp);
1068 if (unlikely(mdt_object_remote(child))) {
1069 /* the child object was created on remote server */
1070 if (!mdt_is_dne_client(exp)) {
1071 /* Return -EIO for old client */
1072 mdt_object_put(env, parent);
1073 mdt_object_put(env, child);
1074 GOTO(out, rc = -EIO);
1076 repbody->fid1 = *rr->rr_fid2;
1077 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1080 if (mdt_object_exists(child)) {
1081 mdt_set_capainfo(info, 1, rr->rr_fid2,
1083 rc = mdt_attr_get_complex(info, child, ma);
1085 rc = mdt_finish_open(info, parent,
1089 /* the child does not exist, we should do
1091 mdt_object_put(env, parent);
1092 mdt_object_put(env, child);
1093 GOTO(regular_open, 0);
1096 mdt_object_put(env, parent);
1097 mdt_object_put(env, child);
1101 /* We did not try to create, so we are a pure open */
1102 rc = mdt_reint_open(info, lhc);
1107 req->rq_status = rc;
1108 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
1109 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
1112 int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep)
1114 __u64 flags = info->mti_spec.sp_cr_flags;
1115 struct mdt_reint_record *rr = &info->mti_rr;
1116 struct md_attr *ma = &info->mti_attr;
1117 struct mdt_object *o;
1121 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
1123 RETURN(rc = PTR_ERR(o));
1125 if (unlikely(mdt_object_remote(o))) {
1126 /* the child object was created on remote server */
1127 struct mdt_body *repbody;
1129 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1132 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1133 repbody->fid1 = *rr->rr_fid2;
1134 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1137 if (mdt_object_exists(o)) {
1138 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1142 rc = mdt_attr_get_complex(info, o, ma);
1144 rc = mdt_finish_open(info, NULL, o, flags, 0,
1151 mdt_object_put(info->mti_env, o);
1155 /* lock object for open */
1156 static int mdt_object_open_lock(struct mdt_thread_info *info,
1157 struct mdt_object *obj,
1158 struct mdt_lock_handle *lhc,
1161 struct md_attr *ma = &info->mti_attr;
1162 __u64 open_flags = info->mti_spec.sp_cr_flags;
1163 ldlm_mode_t lm = LCK_CR;
1164 bool acq_lease = !!(open_flags & MDS_OPEN_LEASE);
1165 bool try_layout = false;
1166 bool create_layout = false;
1171 mdt_lock_handle_init(lhc);
1173 if (req_is_replay(mdt_info_req(info)))
1176 if (S_ISREG(lu_object_attr(&obj->mot_obj))) {
1177 if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) &&
1178 md_should_create(open_flags))
1179 create_layout = true;
1180 if (exp_connect_layout(info->mti_exp) && !create_layout &&
1181 ma->ma_need & MA_LOV)
1186 /* lease open, acquire write mode of open sem */
1187 down_write(&obj->mot_open_sem);
1189 /* Lease exists and ask for new lease */
1190 if (atomic_read(&obj->mot_lease_count) > 0) {
1191 /* only exclusive open is supported, so lease
1192 * are conflicted to each other */
1193 GOTO(out, rc = -EBUSY);
1196 /* Lease must be with open lock */
1197 if (!(open_flags & MDS_OPEN_LOCK)) {
1198 CERROR("Request lease for file:"DFID ", but open lock "
1199 "is missed, open_flags = "LPO64".\n",
1200 PFID(mdt_object_fid(obj)), open_flags);
1201 GOTO(out, rc = -EPROTO);
1204 /* XXX: only exclusive open is supported. */
1206 *ibits = MDS_INODELOCK_OPEN;
1208 /* never grant LCK_EX layout lock to client */
1210 } else { /* normal open */
1211 /* normal open holds read mode of open sem */
1212 down_read(&obj->mot_open_sem);
1214 if (open_flags & MDS_OPEN_LOCK) {
1215 if (open_flags & FMODE_WRITE)
1217 /* if file is released, we can't deny write because we must
1218 * restore (write) it to access it. */
1219 else if ((open_flags & MDS_FMODE_EXEC) &&
1220 !((ma->ma_valid & MA_HSM) &&
1221 (ma->ma_hsm.mh_flags & HS_RELEASED)))
1226 *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN;
1227 } else if (atomic_read(&obj->mot_lease_count) > 0) {
1228 if (open_flags & FMODE_WRITE)
1234 *ibits = MDS_INODELOCK_OPEN;
1237 lhc = &info->mti_lh[MDT_LH_LOCAL];
1239 CDEBUG(D_INODE, "normal open:"DFID" lease count: %d, lm: %d\n",
1240 PFID(mdt_object_fid(obj)),
1241 atomic_read(&obj->mot_open_count), lm);
1244 mdt_lock_reg_init(lhc, lm);
1246 /* one problem to return layout lock on open is that it may result
1247 * in too many layout locks cached on the client side. */
1248 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) {
1249 /* return lookup lock to validate inode at the client side,
1250 * this is pretty important otherwise mdt will return layout
1251 * lock for each open.
1252 * However this is a double-edged sword because changing
1253 * permission will revoke huge # of LOOKUP locks. */
1254 *ibits |= MDS_INODELOCK_LAYOUT | MDS_INODELOCK_LOOKUP;
1255 if (!mdt_object_lock_try(info, obj, lhc, *ibits,
1257 *ibits &= ~(MDS_INODELOCK_LAYOUT|MDS_INODELOCK_LOOKUP);
1259 rc = mdt_object_lock(info, obj, lhc, *ibits,
1262 } else if (*ibits != 0) {
1263 rc = mdt_object_lock(info, obj, lhc, *ibits, MDT_CROSS_LOCK);
1266 CDEBUG(D_INODE, "Requested bits lock:"DFID ", ibits = "LPX64
1267 ", open_flags = "LPO64", try_layout = %d, rc = %d\n",
1268 PFID(mdt_object_fid(obj)), *ibits, open_flags, try_layout, rc);
1270 /* will change layout, revoke layout locks by enqueuing EX lock. */
1271 if (rc == 0 && create_layout) {
1272 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
1274 CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID
1275 ", open_flags = "LPO64"\n",
1276 PFID(mdt_object_fid(obj)), open_flags);
1278 LASSERT(!try_layout);
1279 mdt_lock_handle_init(ll);
1280 mdt_lock_reg_init(ll, LCK_EX);
1281 rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT,
1284 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2);
1287 /* Check if there is any other open handles after acquiring
1288 * open lock. At this point, caching open handles have been revoked
1290 * XXX: Now only exclusive open is supported. Need to check the
1291 * type of open for generic lease support. */
1292 if (rc == 0 && acq_lease) {
1293 struct ptlrpc_request *req = mdt_info_req(info);
1294 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
1295 struct mdt_file_data *mfd;
1296 bool is_replay_or_resent;
1299 /* For lease: application can open a file and then apply lease,
1300 * @handle contains original open handle in that case.
1301 * In recovery, open REQ will be replayed and the lease REQ may
1302 * be resent that means the open handle is already stale, so we
1303 * need to fix it up here by finding new handle. */
1304 is_replay_or_resent = req_is_replay(req) ||
1305 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT;
1307 /* if the request is _not_ a replay request, rr_handle
1308 * may be used to hold an openhandle which is issuing the
1309 * lease request, so that this openhandle doesn't count. */
1310 mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle,
1311 is_replay_or_resent);
1315 CDEBUG(D_INODE, "acq_lease "DFID": openers: %d, want: %d\n",
1316 PFID(mdt_object_fid(obj)),
1317 atomic_read(&obj->mot_open_count), open_count);
1319 if (atomic_read(&obj->mot_open_count) > open_count)
1320 GOTO(out, rc = -EBUSY);
1328 static void mdt_object_open_unlock(struct mdt_thread_info *info,
1329 struct mdt_object *obj,
1330 struct mdt_lock_handle *lhc,
1331 __u64 ibits, int rc)
1333 __u64 open_flags = info->mti_spec.sp_cr_flags;
1334 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LOCAL];
1337 if (req_is_replay(mdt_info_req(info)))
1340 /* Release local lock - the lock put in MDT_LH_LOCAL will never
1341 * return to client side. */
1342 if (lustre_handle_is_used(&ll->mlh_reg_lh))
1343 mdt_object_unlock(info, obj, ll, 1);
1345 ll = &info->mti_lh[MDT_LH_LAYOUT];
1346 /* Release local layout lock, layout was created */
1347 if (lustre_handle_is_used(&ll->mlh_reg_lh)) {
1348 LASSERT(!(ibits & MDS_INODELOCK_LAYOUT));
1349 mdt_object_unlock(info, obj, ll, 1);
1352 if (open_flags & MDS_OPEN_LEASE)
1353 up_write(&obj->mot_open_sem);
1355 up_read(&obj->mot_open_sem);
1357 /* Cross-ref case, the lock should be returned to the client */
1358 if (ibits == 0 || rc == -EREMOTE)
1361 if (!(open_flags & MDS_OPEN_LOCK) && !(ibits & MDS_INODELOCK_LAYOUT)) {
1362 /* for the open request, the lock will only return to client
1363 * if open or layout lock is granted. */
1368 struct ldlm_reply *ldlm_rep;
1370 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1371 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1372 mdt_object_unlock(info, obj, lhc, 1);
1378 * Check release is permitted for the current HSM flags.
1380 static bool mdt_hsm_release_allow(struct md_attr *ma)
1382 if (!(ma->ma_valid & MA_HSM))
1385 if (ma->ma_hsm.mh_flags & (HS_DIRTY|HS_NORELEASE|HS_LOST))
1388 if (!(ma->ma_hsm.mh_flags & HS_ARCHIVED))
1394 int mdt_open_by_fid_lock(struct mdt_thread_info *info, struct ldlm_reply *rep,
1395 struct mdt_lock_handle *lhc)
1397 const struct lu_env *env = info->mti_env;
1398 struct mdt_device *mdt = info->mti_mdt;
1399 __u64 flags = info->mti_spec.sp_cr_flags;
1400 struct mdt_reint_record *rr = &info->mti_rr;
1401 struct md_attr *ma = &info->mti_attr;
1402 struct mdt_object *parent= NULL;
1403 struct mdt_object *o;
1408 if (md_should_create(flags) && !(flags & MDS_OPEN_HAS_EA)) {
1409 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1410 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1411 if (IS_ERR(parent)) {
1412 CDEBUG(D_INODE, "Fail to find parent "DFID
1413 " for anonymous created %ld, try to"
1414 " use server-side parent.\n",
1415 PFID(rr->rr_fid1), PTR_ERR(parent));
1420 ma->ma_need |= MA_PFID;
1423 o = mdt_object_find(env, mdt, rr->rr_fid2);
1425 RETURN(rc = PTR_ERR(o));
1427 if (mdt_object_remote(o)) {
1428 CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n",
1429 mdt_obd_name(info->mti_mdt),
1431 GOTO(out, rc = -EREMOTE);
1432 } else if (!mdt_object_exists(o)) {
1433 mdt_set_disposition(info, rep,
1437 GOTO(out, rc = -ENOENT);
1440 mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1442 if (flags & MDS_OPEN_RELEASE)
1443 ma->ma_need |= MA_HSM;
1444 rc = mdt_attr_get_complex(info, o, ma);
1448 /* If a release request, check file flags are fine and ask for an
1449 * exclusive open access. */
1450 if (flags & MDS_OPEN_RELEASE && !mdt_hsm_release_allow(ma))
1451 GOTO(out, rc = -EPERM);
1453 rc = mdt_object_open_lock(info, o, lhc, &ibits);
1455 GOTO(out_unlock, rc);
1457 if (ma->ma_valid & MA_PFID) {
1458 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1459 if (IS_ERR(parent)) {
1460 CDEBUG(D_INODE, "Fail to find parent "DFID
1461 " for anonymous created %ld, try to"
1462 " use system default.\n",
1463 PFID(&ma->ma_pfid), PTR_ERR(parent));
1468 rc = mdt_finish_open(info, parent, o, flags, 0, rep);
1470 mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
1471 if (flags & MDS_OPEN_LOCK)
1472 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1473 if (flags & MDS_OPEN_LEASE)
1474 mdt_set_disposition(info, rep, DISP_OPEN_LEASE);
1476 GOTO(out_unlock, rc);
1479 mdt_object_open_unlock(info, o, lhc, ibits, rc);
1481 mdt_object_put(env, o);
1483 mdt_object_put(env, parent);
1487 int mdt_pin(struct mdt_thread_info* info)
1490 RETURN(err_serious(-EOPNOTSUPP));
1493 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1494 static int mdt_cross_open(struct mdt_thread_info *info,
1495 const struct lu_fid *parent_fid,
1496 const struct lu_fid *fid,
1497 struct ldlm_reply *rep, __u32 flags)
1499 struct md_attr *ma = &info->mti_attr;
1500 struct mdt_object *o;
1504 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1506 RETURN(rc = PTR_ERR(o));
1508 if (mdt_object_remote(o)) {
1509 /* Something is wrong here, the object is on another MDS! */
1510 CERROR("%s: "DFID" isn't on this server!: rc = %d\n",
1511 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1512 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1514 "Object isn't on this server! FLD error?\n");
1517 if (mdt_object_exists(o)) {
1518 /* Do permission check for cross-open. */
1519 rc = mo_permission(info->mti_env, NULL,
1520 mdt_object_child(o),
1521 NULL, flags | MDS_OPEN_CROSS);
1525 mdt_set_capainfo(info, 0, fid, BYPASS_CAPA);
1526 rc = mdt_attr_get_complex(info, o, ma);
1530 /* Do not create lov object if the fid is opened
1532 if (S_ISREG(ma->ma_attr.la_mode) &&
1533 !(ma->ma_valid & MA_LOV) && (flags & FMODE_WRITE) &&
1534 fid_is_obf(parent_fid))
1535 GOTO(out, rc = -EPERM);
1537 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1540 * Something is wrong here. lookup was positive but
1541 * there is no object!
1543 CERROR("%s: "DFID" doesn't exist!: rc = %d\n",
1544 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1549 mdt_object_put(info->mti_env, o);
1553 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1555 struct mdt_device *mdt = info->mti_mdt;
1556 struct ptlrpc_request *req = mdt_info_req(info);
1557 struct mdt_object *parent;
1558 struct mdt_object *child;
1559 struct mdt_lock_handle *lh;
1560 struct ldlm_reply *ldlm_rep;
1561 struct mdt_body *repbody;
1562 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1563 struct md_attr *ma = &info->mti_attr;
1564 __u64 create_flags = info->mti_spec.sp_cr_flags;
1566 struct mdt_reint_record *rr = &info->mti_rr;
1567 struct lu_name *lname;
1573 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1574 (obd_timeout + 1) / 4);
1576 mdt_counter_incr(req, LPROC_MDT_OPEN);
1577 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1579 ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
1580 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD,
1582 ma->ma_need = MA_INODE;
1583 if (ma->ma_lmm_size > 0)
1584 ma->ma_need |= MA_LOV;
1588 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1589 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1591 if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) {
1592 CERROR("file join is not supported anymore.\n");
1593 GOTO(out, result = err_serious(-EOPNOTSUPP));
1595 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1597 if ((create_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1598 info->mti_spec.u.sp_ea.eadata == NULL)
1599 GOTO(out, result = err_serious(-EINVAL));
1601 CDEBUG(D_INODE, "I am going to open "DFID"/(%s->"DFID") "
1602 "cr_flag="LPO64" mode=0%06o msg_flag=0x%x\n",
1603 PFID(rr->rr_fid1), rr->rr_name,
1604 PFID(rr->rr_fid2), create_flags,
1605 ma->ma_attr.la_mode, msg_flags);
1606 if (info->mti_cross_ref) {
1607 /* This is cross-ref open */
1608 mdt_set_disposition(info, ldlm_rep,
1609 (DISP_IT_EXECD | DISP_LOOKUP_EXECD |
1611 result = mdt_cross_open(info, rr->rr_fid2, rr->rr_fid1,
1612 ldlm_rep, create_flags);
1614 } else if (req_is_replay(req) ||
1615 (req->rq_export->exp_libclient && create_flags & MDS_OPEN_HAS_EA)) {
1616 /* This is a replay request or from liblustre with ea. */
1617 result = mdt_open_by_fid(info, ldlm_rep);
1619 if (result != -ENOENT) {
1620 if (req->rq_export->exp_libclient &&
1621 create_flags & MDS_OPEN_HAS_EA)
1622 GOTO(out, result = 0);
1625 /* We didn't find the correct object, so we need to re-create it
1626 * via a regular replay. */
1627 if (!(create_flags & MDS_OPEN_CREAT)) {
1628 DEBUG_REQ(D_ERROR, req,
1629 "OPEN & CREAT not in open replay/by_fid.");
1630 GOTO(out, result = -EFAULT);
1632 CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
1633 } else if ((rr->rr_namelen == 0 && create_flags & MDS_OPEN_LOCK) ||
1634 (create_flags & MDS_OPEN_BY_FID)) {
1635 result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
1636 /* If result is 0 then open by FID has found the file
1637 * and there is nothing left for us to do here. More
1638 * generally if it is anything other than -ENOENT or
1639 * -EREMOTE then we return that now. If -ENOENT and
1640 * MDS_OPEN_CREAT is set then we must create the file
1641 * below. If -EREMOTE then we need to return a LOOKUP
1642 * lock to the client, which we do below. Hence this
1643 * odd looking condition. See LU-2523. */
1644 if (!(result == -ENOENT && (create_flags & MDS_OPEN_CREAT)) &&
1648 if (unlikely(rr->rr_namelen == 0))
1649 GOTO(out, result = -EINVAL);
1651 CDEBUG(D_INFO, "No object(2), continue as regular open.\n");
1654 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1655 GOTO(out, result = err_serious(-ENOMEM));
1657 mdt_set_disposition(info, ldlm_rep,
1658 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1660 lh = &info->mti_lh[MDT_LH_PARENT];
1661 mdt_lock_pdo_init(lh, (create_flags & MDS_OPEN_CREAT) ?
1662 LCK_PW : LCK_PR, rr->rr_name, rr->rr_namelen);
1664 parent = mdt_object_find_lock(info, rr->rr_fid1, lh,
1665 MDS_INODELOCK_UPDATE);
1667 GOTO(out, result = PTR_ERR(parent));
1669 /* get and check version of parent */
1670 result = mdt_version_get_check(info, parent, 0);
1672 GOTO(out_parent, result);
1674 fid_zero(child_fid);
1676 lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen);
1677 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1678 lname, child_fid, &info->mti_spec);
1679 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1680 "looking for "DFID"/%s, result fid="DFID"\n",
1681 PFID(mdt_object_fid(parent)), rr->rr_name, PFID(child_fid));
1683 if (result != 0 && result != -ENOENT && result != -ESTALE)
1684 GOTO(out_parent, result);
1686 if (result == -ENOENT || result == -ESTALE) {
1687 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1688 if (result == -ESTALE) {
1690 * -ESTALE means the parent is a dead(unlinked) dir, so
1691 * it should return -ENOENT to in accordance with the
1692 * original mds implementaion.
1694 GOTO(out_parent, result = -ENOENT);
1696 if (!(create_flags & MDS_OPEN_CREAT))
1697 GOTO(out_parent, result);
1698 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
1699 GOTO(out_parent, result = -EROFS);
1700 *child_fid = *info->mti_rr.rr_fid2;
1701 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1703 /* In the function below, .hs_keycmp resolves to
1704 * lu_obj_hop_keycmp() */
1705 /* coverity[overrun-buffer-val] */
1706 child = mdt_object_new(info->mti_env, mdt, child_fid);
1709 * Check for O_EXCL is moved to the mdt_finish_open(), we need to
1710 * return FID back in that case.
1712 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1713 child = mdt_object_find(info->mti_env, mdt, child_fid);
1716 GOTO(out_parent, result = PTR_ERR(child));
1718 /** check version of child */
1719 rc = mdt_version_get_check(info, child, 1);
1721 GOTO(out_child, result = rc);
1723 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1724 if (result == -ENOENT) {
1725 /* Create under OBF and .lustre is not permitted */
1726 if (fid_is_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1))
1727 GOTO(out_child, result = -EPERM);
1729 /* save versions in reply */
1730 mdt_version_get_save(info, parent, 0);
1731 mdt_version_get_save(info, child, 1);
1733 /* version of child will be changed */
1734 info->mti_mos = child;
1736 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1737 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1739 /* Let lower layers know what is lock mode on directory. */
1740 info->mti_spec.sp_cr_mode =
1741 mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
1744 * Do not perform lookup sanity check. We know that name does
1747 info->mti_spec.sp_cr_lookup = 0;
1748 info->mti_spec.sp_feat = &dt_directory_features;
1750 result = mdo_create(info->mti_env,
1751 mdt_object_child(parent),
1753 mdt_object_child(child),
1756 if (result == -ERESTART) {
1757 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1758 GOTO(out_child, result);
1761 /* XXX: we should call this once, see few lines below */
1763 result = mdt_attr_get_complex(info, child, ma);
1766 GOTO(out_child, result);
1771 * The object is on remote node, return its FID for remote open.
1773 if (mdt_object_remote(child)) {
1775 * Check if this lock already was sent to client and
1776 * this is resent case. For resent case do not take lock
1777 * again, use what is already granted.
1779 LASSERT(lhc != NULL);
1781 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1782 struct ldlm_lock *lock;
1784 LASSERT(msg_flags & MSG_RESENT);
1786 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1788 CERROR("Invalid lock handle "LPX64"\n",
1789 lhc->mlh_reg_lh.cookie);
1792 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1793 &lock->l_resource->lr_name));
1794 LDLM_LOCK_PUT(lock);
1797 mdt_lock_handle_init(lhc);
1798 mdt_lock_reg_init(lhc, LCK_PR);
1800 rc = mdt_object_lock(info, child, lhc,
1801 MDS_INODELOCK_LOOKUP,
1804 repbody->fid1 = *mdt_object_fid(child);
1805 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1810 GOTO(out_child, result);
1812 if (mdt_object_exists(child)) {
1813 /* We have to get attr & LOV EA & HSM for this
1815 ma->ma_need |= MA_HSM;
1816 result = mdt_attr_get_complex(info, child, ma);
1818 /*object non-exist!!!*/
1824 LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh));
1826 /* get openlock if this is not replay and if a client requested it */
1827 if (!req_is_replay(req)) {
1828 rc = mdt_object_open_lock(info, child, lhc, &ibits);
1830 GOTO(out_child_unlock, result = rc);
1831 else if (create_flags & MDS_OPEN_LOCK)
1832 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1835 /* Try to open it now. */
1836 rc = mdt_finish_open(info, parent, child, create_flags,
1840 /* openlock will be released if mdt_finish_open failed */
1841 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1843 if (created && create_flags & MDS_OPEN_VOLATILE) {
1844 CERROR("%s: cannot open volatile file "DFID", orphan "
1845 "file will be left in PENDING directory until "
1846 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1847 PFID(mdt_object_fid(child)), rc);
1848 GOTO(out_child_unlock, result);
1854 ma->ma_cookie_size = 0;
1855 rc = mdo_unlink(info->mti_env,
1856 mdt_object_child(parent),
1857 mdt_object_child(child),
1859 &info->mti_attr, 0);
1861 CERROR("%s: "DFID" cleanup of open: rc = %d\n",
1862 mdt_obd_name(info->mti_mdt),
1863 PFID(mdt_object_fid(child)), rc);
1864 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1869 mdt_object_open_unlock(info, child, lhc, ibits, result);
1871 mdt_object_put(info->mti_env, child);
1873 mdt_object_unlock_put(info, parent, lh, result || !created);
1876 lustre_msg_set_transno(req->rq_repmsg, 0);
1881 * Create an orphan object use local root.
1883 static struct mdt_object *mdt_orphan_open(struct mdt_thread_info *info,
1884 struct mdt_device *mdt,
1885 const struct lu_fid *fid,
1886 struct md_attr *attr, fmode_t fmode)
1888 const struct lu_env *env = info->mti_env;
1889 struct md_op_spec *spec = &info->mti_spec;
1890 struct lu_fid *rootfid = &info->mti_tmp_fid1;
1891 struct mdt_object *obj = NULL;
1892 struct mdt_object *local_root;
1893 static const char name[] = "i_am_nobody";
1894 struct lu_name *lname;
1898 rc = dt_root_get(env, mdt->mdt_bottom, rootfid);
1900 RETURN(ERR_PTR(rc));
1902 local_root = mdt_object_find(env, mdt, rootfid);
1903 if (IS_ERR(local_root))
1906 obj = mdt_object_new(env, mdt, fid);
1908 GOTO(out, rc = PTR_ERR(obj));
1910 spec->sp_cr_lookup = 0;
1911 spec->sp_feat = &dt_directory_features;
1912 spec->sp_cr_mode = MDL_MINMODE; /* no lock */
1913 spec->sp_cr_flags = MDS_OPEN_VOLATILE | fmode;
1914 if (attr->ma_valid & MA_LOV) {
1915 spec->u.sp_ea.eadata = attr->ma_lmm;
1916 spec->u.sp_ea.eadatalen = attr->ma_lmm_size;
1917 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1919 spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE;
1922 lname = mdt_name(env, (char *)name, sizeof(name) - 1);
1923 rc = mdo_create(env, mdt_object_child(local_root), lname,
1924 mdt_object_child(obj), spec, attr);
1926 rc = mo_open(env, mdt_object_child(obj), MDS_OPEN_CREATED);
1928 CERROR("%s: cannot open volatile file "DFID", orphan "
1929 "file will be left in PENDING directory until "
1930 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1938 mdt_object_put(env, obj);
1941 mdt_object_put(env, local_root);
1945 static int mdt_hsm_release(struct mdt_thread_info *info, struct mdt_object *o,
1948 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LAYOUT];
1949 struct close_data *data;
1950 struct ldlm_lock *lease;
1951 struct mdt_object *orphan;
1952 struct md_attr *orp_ma;
1959 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
1963 lease = ldlm_handle2lock(&data->cd_handle);
1967 /* try to hold open_sem so that nobody else can open the file */
1968 if (!down_write_trylock(&o->mot_open_sem)) {
1969 ldlm_lock_cancel(lease);
1970 LDLM_LOCK_PUT(lease);
1974 /* Check if the lease open lease has already canceled */
1975 lock_res_and_lock(lease);
1976 lease_broken = ldlm_is_cancel(lease);
1977 unlock_res_and_lock(lease);
1979 LDLM_DEBUG(lease, DFID " lease broken? %d\n",
1980 PFID(mdt_object_fid(o)), lease_broken);
1982 /* Cancel server side lease. Client side counterpart should
1983 * have been cancelled. It's okay to cancel it now as we've
1984 * held mot_open_sem. */
1985 ldlm_lock_cancel(lease);
1986 LDLM_LOCK_PUT(lease);
1988 if (lease_broken) /* don't perform release task */
1989 GOTO(out_unlock, rc = -ESTALE);
1991 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
1992 GOTO(out_unlock, rc = -EINVAL);
1994 /* ma_need was set before but it seems fine to change it in order to
1995 * avoid modifying the one from RPC */
1996 ma->ma_need = MA_HSM | MA_LOV;
1997 rc = mdt_attr_get_complex(info, o, ma);
1999 GOTO(out_unlock, rc);
2001 if (!mdt_hsm_release_allow(ma))
2002 GOTO(out_unlock, rc = -EPERM);
2004 /* already released? */
2005 if (ma->ma_hsm.mh_flags & HS_RELEASED)
2006 GOTO(out_unlock, rc = 0);
2008 /* Compare on-disk and packed data_version */
2009 if (data->cd_data_version != ma->ma_hsm.mh_arch_ver) {
2010 CDEBUG(D_HSM, DFID" data_version mismatches: packed="LPU64
2011 " and on-disk="LPU64"\n", PFID(mdt_object_fid(o)),
2012 data->cd_data_version, ma->ma_hsm.mh_arch_ver);
2013 GOTO(out_unlock, rc = -EPERM);
2016 ma->ma_valid = MA_INODE;
2017 ma->ma_attr.la_valid &= LA_SIZE | LA_MTIME | LA_ATIME;
2018 rc = mo_attr_set(info->mti_env, mdt_object_child(o), ma);
2020 GOTO(out_unlock, rc);
2022 if (!(ma->ma_valid & MA_LOV)) {
2023 /* Even empty file are released */
2024 memset(ma->ma_lmm, 0, sizeof(*ma->ma_lmm));
2025 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEF);
2026 ma->ma_lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
2027 ma->ma_lmm->lmm_stripe_size = cpu_to_le32(LOV_MIN_STRIPE_SIZE);
2028 ma->ma_valid |= MA_LOV;
2030 /* Magic must be LOV_MAGIC_Vx_DEF otherwise LOD will interpret
2031 * ma_lmm as lov_user_md, then it will be confused by union of
2032 * layout_gen and stripe_offset. */
2033 if (le32_to_cpu(ma->ma_lmm->lmm_magic) == LOV_MAGIC_V1)
2034 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEF);
2035 else if (le32_to_cpu(ma->ma_lmm->lmm_magic) == LOV_MAGIC_V3)
2036 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V3_DEF);
2038 GOTO(out_unlock, rc = -EINVAL);
2041 /* Set file as released */
2042 ma->ma_lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
2044 /* Hopefully it's not used in this call path */
2045 orp_ma = &info->mti_u.som.attr;
2046 orp_ma->ma_valid = MA_INODE | MA_LOV;
2047 orp_ma->ma_attr.la_mode = S_IFREG;
2048 orp_ma->ma_attr.la_valid = LA_MODE;
2049 orp_ma->ma_lmm = ma->ma_lmm;
2050 orp_ma->ma_lmm_size = ma->ma_lmm_size;
2051 orphan = mdt_orphan_open(info, info->mti_mdt, &data->cd_fid, orp_ma,
2053 if (IS_ERR(orphan)) {
2054 CERROR("%s: cannot open orphan file "DFID": rc = %ld\n",
2055 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid),
2057 GOTO(out_unlock, rc = PTR_ERR(orphan));
2060 /* Set up HSM attribute for orphan object */
2061 CLASSERT(sizeof(struct hsm_attrs) <= sizeof(info->mti_xattr_buf));
2062 buf = &info->mti_buf;
2063 buf->lb_buf = info->mti_xattr_buf;
2064 buf->lb_len = sizeof(struct hsm_attrs);
2065 ma->ma_hsm.mh_flags |= HS_RELEASED;
2066 lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
2067 ma->ma_hsm.mh_flags &= ~HS_RELEASED;
2068 rc = mo_xattr_set(info->mti_env, mdt_object_child(orphan), buf,
2071 GOTO(out_close, rc);
2073 mdt_lock_reg_init(lh, LCK_EX);
2074 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_LAYOUT, MDT_LOCAL_LOCK);
2076 /* Swap layout with orphan object */
2077 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o),
2078 mdt_object_child(orphan),
2079 SWAP_LAYOUTS_MDS_HSM);
2081 /* Release exclusive LL */
2082 mdt_object_unlock(info, o, lh, 1);
2087 /* Close orphan object anyway */
2088 rc2 = mo_close(info->mti_env, mdt_object_child(orphan), orp_ma,
2091 CERROR("%s: error closing volatile file "DFID": rc = %d\n",
2092 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid), rc2);
2093 LU_OBJECT_DEBUG(D_HSM, info->mti_env, &orphan->mot_obj,
2095 mdt_object_put(info->mti_env, orphan);
2098 up_write(&o->mot_open_sem);
2100 if (rc == 0) { /* already released */
2101 struct mdt_body *repbody;
2102 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2103 LASSERT(repbody != NULL);
2104 repbody->valid |= OBD_MD_FLRELEASED;
2112 #define MFD_CLOSED(mode) (((mode) & ~(MDS_FMODE_EPOCH | MDS_FMODE_SOM | \
2113 MDS_FMODE_TRUNC)) == MDS_FMODE_CLOSED)
2115 static int mdt_mfd_closed(struct mdt_file_data *mfd)
2117 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_mode));
2120 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
2122 struct mdt_object *o = mfd->mfd_object;
2123 struct md_object *next = mdt_object_child(o);
2124 struct md_attr *ma = &info->mti_attr;
2125 int ret = MDT_IOEPOCH_CLOSED;
2130 mode = mfd->mfd_mode;
2132 if (ma->ma_attr_flags & MDS_HSM_RELEASE) {
2133 rc = mdt_hsm_release(info, o, ma);
2135 CDEBUG(D_HSM, "%s: File " DFID " release failed: %d\n",
2136 mdt_obd_name(info->mti_mdt),
2137 PFID(mdt_object_fid(o)), rc);
2138 /* continue to close even error occurred. */
2142 if ((mode & FMODE_WRITE) || (mode & MDS_FMODE_TRUNC)) {
2144 ret = mdt_ioepoch_close(info, o);
2145 } else if (mode & MDS_FMODE_EXEC) {
2147 } else if (mode & MDS_FMODE_EPOCH) {
2148 ret = mdt_ioepoch_close(info, o);
2149 } else if (mode & MDS_FMODE_SOM) {
2150 ret = mdt_som_au_close(info, o);
2153 /* Update atime on close only. */
2154 if ((mode & MDS_FMODE_EXEC || mode & FMODE_READ || mode & FMODE_WRITE)
2155 && (ma->ma_valid & MA_INODE) && (ma->ma_attr.la_valid & LA_ATIME)) {
2156 /* Set the atime only. */
2157 ma->ma_valid = MA_INODE;
2158 ma->ma_attr.la_valid = LA_ATIME;
2159 rc = mo_attr_set(info->mti_env, next, ma);
2162 /* If file data is modified, add the dirty flag. */
2163 if (ma->ma_attr_flags & MDS_DATA_MODIFIED)
2164 rc = mdt_add_dirty_flag(info, o, ma);
2166 ma->ma_need |= MA_INODE;
2167 ma->ma_valid &= ~MA_INODE;
2169 if (!MFD_CLOSED(mode))
2170 rc = mo_close(info->mti_env, next, ma, mode);
2172 if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) {
2173 struct mdt_export_data *med;
2175 /* The IOepoch is still opened or SOM update is needed.
2176 * Put mfd back into the list. */
2177 LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
2178 mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ?
2179 MDS_FMODE_EPOCH : MDS_FMODE_SOM);
2181 LASSERT(mdt_info_req(info));
2182 med = &mdt_info_req(info)->rq_export->exp_mdt_data;
2183 spin_lock(&med->med_open_lock);
2184 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
2185 class_handle_hash_back(&mfd->mfd_handle);
2186 spin_unlock(&med->med_open_lock);
2188 if (ret == MDT_IOEPOCH_OPENED) {
2192 CDEBUG(D_INODE, "Size-on-MDS attribute update is "
2193 "needed on "DFID"\n", PFID(mdt_object_fid(o)));
2196 /* adjust open and lease count */
2197 if (mode & MDS_OPEN_LEASE) {
2198 LASSERT(atomic_read(&o->mot_lease_count) > 0);
2199 atomic_dec(&o->mot_lease_count);
2201 LASSERT(atomic_read(&o->mot_open_count) > 0);
2202 atomic_dec(&o->mot_open_count);
2205 mdt_object_put(info->mti_env, o);
2208 RETURN(rc ? rc : ret);
2211 int mdt_close(struct mdt_thread_info *info)
2213 struct mdt_export_data *med;
2214 struct mdt_file_data *mfd;
2215 struct mdt_object *o;
2216 struct md_attr *ma = &info->mti_attr;
2217 struct mdt_body *repbody = NULL;
2218 struct ptlrpc_request *req = mdt_info_req(info);
2222 mdt_counter_incr(req, LPROC_MDT_CLOSE);
2223 /* Close may come with the Size-on-MDS update. Unpack it. */
2224 rc = mdt_close_unpack(info);
2226 RETURN(err_serious(rc));
2228 LASSERT(info->mti_ioepoch);
2230 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
2231 info->mti_mdt->mdt_max_mdsize);
2232 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
2233 info->mti_mdt->mdt_max_cookiesize);
2234 rc = req_capsule_server_pack(info->mti_pill);
2235 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2236 mdt_client_compatibility(info);
2238 mdt_fix_reply(info);
2239 mdt_exit_ucred(info);
2240 RETURN(lustre_msg_get_status(req->rq_repmsg));
2243 /* Continue to close handle even if we can not pack reply */
2245 repbody = req_capsule_server_get(info->mti_pill,
2247 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
2249 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
2252 ma->ma_cookie = req_capsule_server_get(info->mti_pill,
2254 ma->ma_cookie_size = req_capsule_get_size(info->mti_pill,
2257 ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE;
2258 repbody->eadatasize = 0;
2259 repbody->aclsize = 0;
2261 rc = err_serious(rc);
2264 med = &req->rq_export->exp_mdt_data;
2265 spin_lock(&med->med_open_lock);
2266 mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
2267 req_is_replay(req));
2268 if (mdt_mfd_closed(mfd)) {
2269 spin_unlock(&med->med_open_lock);
2270 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
2271 ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1),
2272 info->mti_ioepoch->handle.cookie);
2273 /** not serious error since bug 3633 */
2276 class_handle_unhash(&mfd->mfd_handle);
2277 cfs_list_del_init(&mfd->mfd_list);
2278 spin_unlock(&med->med_open_lock);
2280 /* Do not lose object before last unlink. */
2281 o = mfd->mfd_object;
2282 mdt_object_get(info->mti_env, o);
2283 ret = mdt_mfd_close(info, mfd);
2284 if (repbody != NULL)
2285 rc = mdt_handle_last_unlink(info, o, ma);
2286 mdt_empty_transno(info, rc);
2287 mdt_object_put(info->mti_env, o);
2289 if (repbody != NULL) {
2290 mdt_client_compatibility(info);
2291 rc = mdt_fix_reply(info);
2294 mdt_exit_ucred(info);
2295 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
2296 RETURN(err_serious(-ENOMEM));
2298 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
2299 OBD_FAIL_MDS_CLOSE_NET_REP))
2300 info->mti_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
2301 RETURN(rc ? rc : ret);
2305 * DONE_WRITING rpc handler.
2307 * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()),
2308 * only those DONE_WRITING rpc will be replayed which really wrote smth on disk,
2309 * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just
2310 * skip attributes and reconstruct the reply here.
2312 int mdt_done_writing(struct mdt_thread_info *info)
2314 struct ptlrpc_request *req = mdt_info_req(info);
2315 struct mdt_body *repbody = NULL;
2316 struct mdt_export_data *med;
2317 struct mdt_file_data *mfd;
2321 rc = req_capsule_server_pack(info->mti_pill);
2323 RETURN(err_serious(rc));
2325 repbody = req_capsule_server_get(info->mti_pill,
2327 repbody->eadatasize = 0;
2328 repbody->aclsize = 0;
2330 /* Done Writing may come with the Size-on-MDS update. Unpack it. */
2331 rc = mdt_close_unpack(info);
2333 RETURN(err_serious(rc));
2335 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2336 mdt_exit_ucred(info);
2337 RETURN(lustre_msg_get_status(req->rq_repmsg));
2340 med = &info->mti_exp->exp_mdt_data;
2341 spin_lock(&med->med_open_lock);
2342 mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
2343 req_is_replay(req));
2345 spin_unlock(&med->med_open_lock);
2346 CDEBUG(D_INODE, "no handle for done write: fid = "DFID
2347 ": cookie = "LPX64" ioepoch = "LPU64"\n",
2348 PFID(info->mti_rr.rr_fid1),
2349 info->mti_ioepoch->handle.cookie,
2350 info->mti_ioepoch->ioepoch);
2351 /* If this is a replay, reconstruct the transno. */
2352 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
2353 rc = info->mti_ioepoch->flags & MF_SOM_AU ?
2355 mdt_empty_transno(info, rc);
2358 GOTO(error_ucred, rc);
2361 LASSERT(mfd->mfd_mode == MDS_FMODE_EPOCH ||
2362 mfd->mfd_mode == MDS_FMODE_TRUNC);
2363 class_handle_unhash(&mfd->mfd_handle);
2364 cfs_list_del_init(&mfd->mfd_list);
2365 spin_unlock(&med->med_open_lock);
2367 /* Set EPOCH CLOSE flag if not set by client. */
2368 info->mti_ioepoch->flags |= MF_EPOCH_CLOSE;
2369 info->mti_attr.ma_valid = 0;
2371 info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
2372 OBD_ALLOC_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
2373 if (info->mti_attr.ma_lmm == NULL)
2374 GOTO(error_ucred, rc = -ENOMEM);
2376 rc = mdt_mfd_close(info, mfd);
2378 OBD_FREE_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
2379 mdt_empty_transno(info, rc);
2381 mdt_exit_ucred(info);