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.
81 * Callers need to be holding med_open_lock.
83 struct mdt_file_data *mdt_handle2mfd(struct mdt_export_data *med,
84 const struct lustre_handle *handle,
85 bool is_replay_or_resent)
87 struct mdt_file_data *mfd;
90 LASSERT(handle != NULL);
91 mfd = class_handle2object(handle->cookie, med);
92 /* during dw/setattr replay the mfd can be found by old handle */
93 if (mfd == NULL && is_replay_or_resent) {
94 cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
95 if (mfd->mfd_old_handle.cookie == handle->cookie)
105 void mdt_mfd_free(struct mdt_file_data *mfd)
107 LASSERT(cfs_list_empty(&mfd->mfd_list));
108 OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle);
111 static int mdt_create_data(struct mdt_thread_info *info,
112 struct mdt_object *p, struct mdt_object *o)
114 struct md_op_spec *spec = &info->mti_spec;
115 struct md_attr *ma = &info->mti_attr;
119 if (!md_should_create(spec->sp_cr_flags))
122 ma->ma_need = MA_INODE | MA_LOV;
124 mutex_lock(&o->mot_lov_mutex);
125 if (!(o->mot_flags & MOF_LOV_CREATED)) {
126 if (p != NULL && (fid_is_obf(mdt_object_fid(p)) ||
127 fid_is_dot_lustre(mdt_object_fid(p))))
128 GOTO(unlock, rc = -EPERM);
130 rc = mdo_create_data(info->mti_env,
131 p ? mdt_object_child(p) : NULL,
132 mdt_object_child(o), spec, ma);
134 rc = mdt_attr_get_complex(info, o, ma);
136 if (rc == 0 && ma->ma_valid & MA_LOV)
137 o->mot_flags |= MOF_LOV_CREATED;
140 mutex_unlock(&o->mot_lov_mutex);
144 static int mdt_ioepoch_opened(struct mdt_object *mo)
146 return mo->mot_ioepoch_count;
149 int mdt_object_is_som_enabled(struct mdt_object *mo)
151 return !mo->mot_ioepoch;
155 * Re-enable Size-on-MDS.
156 * Call under ->mot_ioepoch_mutex.
158 static void mdt_object_som_enable(struct mdt_object *mo, __u64 ioepoch)
160 if (ioepoch == mo->mot_ioepoch) {
161 LASSERT(!mdt_ioepoch_opened(mo));
168 * Open the IOEpoch. It is allowed if @writecount is not negative.
169 * The epoch and writecount handling is performed under the mot_ioepoch_mutex.
171 int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
174 struct mdt_device *mdt = info->mti_mdt;
179 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
180 !S_ISREG(lu_object_attr(&o->mot_obj)))
183 mutex_lock(&o->mot_ioepoch_mutex);
184 if (mdt_ioepoch_opened(o)) {
185 /* Epoch continues even if there is no writers yet. */
186 CDEBUG(D_INODE, "continue epoch "LPU64" for "DFID"\n",
187 o->mot_ioepoch, PFID(mdt_object_fid(o)));
189 /* XXX: ->mdt_ioepoch is not initialized at the mount */
190 spin_lock(&mdt->mdt_ioepoch_lock);
191 if (mdt->mdt_ioepoch < info->mti_replayepoch)
192 mdt->mdt_ioepoch = info->mti_replayepoch;
194 if (info->mti_replayepoch)
195 o->mot_ioepoch = info->mti_replayepoch;
196 else if (++mdt->mdt_ioepoch == IOEPOCH_INVAL)
197 o->mot_ioepoch = ++mdt->mdt_ioepoch;
199 o->mot_ioepoch = mdt->mdt_ioepoch;
201 spin_unlock(&mdt->mdt_ioepoch_lock);
203 CDEBUG(D_INODE, "starting epoch "LPU64" for "DFID"\n",
204 o->mot_ioepoch, PFID(mdt_object_fid(o)));
206 o->mot_flags |= MOF_SOM_CREATED;
209 o->mot_ioepoch_count++;
210 mutex_unlock(&o->mot_ioepoch_mutex);
212 /* Cancel Size-on-MDS attributes cached on clients for the open case.
213 * In the truncate case, see mdt_reint_setattr(). */
214 if (cancel && (info->mti_rr.rr_fid1 != NULL)) {
215 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_CHILD];
216 mdt_lock_reg_init(lh, LCK_EX);
217 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_UPDATE,
220 mdt_object_unlock(info, o, lh, 1);
226 * Update SOM on-disk attributes.
227 * If enabling, write update inodes and lustre-ea with the proper IOEpoch,
228 * mountid and attributes. If disabling, clean SOM xattr.
229 * Call under ->mot_ioepoch_mutex.
231 static int mdt_som_attr_set(struct mdt_thread_info *info,
232 struct mdt_object *obj, __u64 ioepoch, bool enable)
234 struct md_object *next = mdt_object_child(obj);
238 CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64
239 " on "DFID".\n", enable ? "update" : "disabling",
240 ioepoch, PFID(mdt_object_fid(obj)));
243 struct lu_buf *buf = &info->mti_buf;
244 struct som_attrs *attrs;
245 struct md_attr *ma = &info->mti_attr;
246 struct lu_attr *la = &ma->ma_attr;
247 struct obd_device *obd = info->mti_mdt->mdt_lut.lut_obd;
249 attrs = (struct som_attrs *)info->mti_xattr_buf;
250 CLASSERT(sizeof(info->mti_xattr_buf) >= sizeof(*attrs));
252 /* pack SOM attributes */
253 memset(attrs, 0, sizeof(*attrs));
254 attrs->som_ioepoch = ioepoch;
255 attrs->som_mountid = obd->u.obt.obt_mount_count;
256 if ((la->la_valid & LA_SIZE) != 0)
257 attrs->som_size = la->la_size;
258 if ((la->la_valid & LA_BLOCKS) != 0)
259 attrs->som_blocks = la->la_blocks;
260 lustre_som_swab(attrs);
262 /* update SOM attributes */
264 buf->lb_len = sizeof(*attrs);
265 rc = mo_xattr_set(info->mti_env, next, buf, XATTR_NAME_SOM, 0);
267 /* delete SOM attributes */
268 rc = mo_xattr_del(info->mti_env, next, XATTR_NAME_SOM);
274 /** Perform the eviction specific actions on ioepoch close. */
275 static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info,
276 struct mdt_object *o)
280 mutex_lock(&o->mot_ioepoch_mutex);
281 CDEBUG(D_INODE, "Eviction. Closing IOepoch "LPU64" on "DFID". "
282 "Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)),
283 o->mot_ioepoch_count);
284 o->mot_ioepoch_count--;
286 /* If eviction occured set MOF_SOM_RECOV,
287 * if no other epoch holders, disable SOM on disk. */
288 o->mot_flags |= MOF_SOM_CHANGE | MOF_SOM_RECOV;
289 if (!mdt_ioepoch_opened(o)) {
290 rc = mdt_som_attr_set(info, o, o->mot_ioepoch, MDT_SOM_DISABLE);
291 mdt_object_som_enable(o, o->mot_ioepoch);
293 mutex_unlock(&o->mot_ioepoch_mutex);
298 * Perform the replay specific actions on ioepoch close.
299 * Skip SOM attribute update if obtained and just forget about the inode state
300 * for the last ioepoch holder. The SOM cache is invalidated on MDS failure.
302 static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info,
303 struct mdt_object *o)
305 int rc = MDT_IOEPOCH_CLOSED;
308 mutex_lock(&o->mot_ioepoch_mutex);
309 CDEBUG(D_INODE, "Replay. Closing epoch "LPU64" on "DFID". Count %d\n",
310 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
311 o->mot_ioepoch_count--;
313 /* Get an info from the replayed request if client is supposed
314 * to send an Attibute Update, reconstruct @rc if so */
315 if (info->mti_ioepoch->flags & MF_SOM_AU)
316 rc = MDT_IOEPOCH_GETATTR;
318 if (!mdt_ioepoch_opened(o))
319 mdt_object_som_enable(o, info->mti_ioepoch->ioepoch);
320 mutex_unlock(&o->mot_ioepoch_mutex);
326 * Regular file IOepoch close.
327 * Closes the ioepoch, checks the object state, apply obtained attributes and
328 * re-enable SOM on the object, if possible. Also checks if the recovery is
329 * needed and packs OBD_MD_FLGETATTRLOCK flag into the reply to force the client
330 * to obtain SOM attributes under the server-side OST locks.
333 * MDT_IOEPOCH_CLOSED if ioepoch is closed.
334 * MDT_IOEPOCH_GETATTR if ioepoch is closed but another SOM update is needed.
336 static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info,
337 struct mdt_object *o)
339 struct md_attr *tmp_ma;
343 int rc = 0, ret = MDT_IOEPOCH_CLOSED;
346 la = &info->mti_attr.ma_attr;
347 achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE);
349 mutex_lock(&o->mot_ioepoch_mutex);
350 o->mot_ioepoch_count--;
352 tmp_ma = &info->mti_u.som.attr;
353 tmp_ma->ma_lmm = info->mti_attr.ma_lmm;
354 tmp_ma->ma_lmm_size = info->mti_attr.ma_lmm_size;
355 tmp_ma->ma_som = &info->mti_u.som.data;
356 tmp_ma->ma_need = MA_INODE | MA_LOV | MA_SOM;
357 tmp_ma->ma_valid = 0;
358 rc = mdt_attr_get_complex(info, o, tmp_ma);
362 /* Check the on-disk SOM state. */
363 if (o->mot_flags & MOF_SOM_RECOV)
365 else if (!(o->mot_flags & MOF_SOM_CREATED) &&
366 !(tmp_ma->ma_valid & MA_SOM))
369 CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
370 o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
372 opened = mdt_ioepoch_opened(o);
374 * If IOEpoch is not opened, check if a Size-on-MDS update is needed.
375 * Skip the check for file with no LOV or for unlink files.
377 if (!opened && tmp_ma->ma_valid & MA_LOV &&
378 !(tmp_ma->ma_valid & MA_INODE && tmp_ma->ma_attr.la_nlink == 0)) {
380 /* If some previous writer was evicted, re-ask the
381 * client for attributes. Even if attributes are
382 * provided, we cannot believe in them.
383 * Another use case is that there is no SOM cache on
384 * disk -- first access with SOM or there was an MDS
386 ret = MDT_IOEPOCH_GETATTR;
387 else if (o->mot_flags & MOF_SOM_CHANGE)
388 /* Some previous writer changed the attribute.
389 * Do not believe to the current Size-on-MDS
390 * update, re-ask client. */
391 ret = MDT_IOEPOCH_GETATTR;
392 else if (!(la->la_valid & LA_SIZE) && achange)
393 /* Attributes were changed by the last writer
394 * only but no Size-on-MDS update is received.*/
395 ret = MDT_IOEPOCH_GETATTR;
398 if (achange || ret == MDT_IOEPOCH_GETATTR)
399 o->mot_flags |= MOF_SOM_CHANGE;
401 /* If epoch ends and relable SOM attributes are obtained, update them.
402 * Create SOM ea for new files even if there is no attributes obtained
403 * (0-length file). */
404 if (ret == MDT_IOEPOCH_CLOSED && !opened) {
405 if (achange || o->mot_flags & MOF_SOM_CREATED) {
406 LASSERT(achange || !(la->la_valid & LA_SIZE));
407 rc = mdt_som_attr_set(info, o, o->mot_ioepoch,
409 /* Avoid the following setattrs of these attributes,
410 * e.g. for atime update. */
411 info->mti_attr.ma_valid = 0;
413 mdt_object_som_enable(o, o->mot_ioepoch);
416 mutex_unlock(&o->mot_ioepoch_mutex);
417 /* If recovery is needed, tell the client to perform GETATTR under
419 if (ret == MDT_IOEPOCH_GETATTR && recovery) {
420 struct mdt_body *rep;
421 rep = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
422 rep->valid |= OBD_MD_FLGETATTRLOCK;
428 mutex_unlock(&o->mot_ioepoch_mutex);
433 * Close IOEpoch (opened file or MDS_FMODE_EPOCH state). It happens if:
434 * - a client closes the IOEpoch;
435 * - a client eviction occured.
437 * MDT_IOEPOCH_OPENED if the client does not close IOEpoch.
438 * MDT_IOEPOCH_CLOSED if the client closes IOEpoch.
439 * MDT_IOEPOCH_GETATTR if the client closes IOEpoch but another SOM attribute
442 static int mdt_ioepoch_close(struct mdt_thread_info *info, struct mdt_object *o)
444 struct ptlrpc_request *req = mdt_info_req(info);
447 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
448 !S_ISREG(lu_object_attr(&o->mot_obj)))
451 LASSERT(o->mot_ioepoch_count);
452 LASSERT(info->mti_ioepoch == NULL ||
453 info->mti_ioepoch->ioepoch == o->mot_ioepoch);
455 /* IOEpoch is closed only if client tells about it or eviction occures.
456 * In the replay case, always close the epoch. */
458 RETURN(mdt_ioepoch_close_on_eviction(info, o));
459 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
460 RETURN(mdt_ioepoch_close_on_replay(info, o));
461 if (info->mti_ioepoch && (info->mti_ioepoch->flags & MF_EPOCH_CLOSE))
462 RETURN(mdt_ioepoch_close_reg(info, o));
463 /* IO epoch is not closed. */
464 RETURN(MDT_IOEPOCH_OPENED);
468 * Close MDS_FMODE_SOM state, when IOEpoch is already closed and we are waiting
469 * for attribute update. It happens if:
470 * - SOM Attribute Update is obtained;
471 * - the client failed to obtain it and informs MDS about it;
472 * - a client eviction occured.
473 * Apply obtained attributes for the 1st case, wipe out the on-disk SOM
476 int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o)
478 struct ptlrpc_request *req = mdt_info_req(info);
480 int act = MDT_SOM_ENABLE;
484 LASSERT(!req || info->mti_ioepoch);
485 if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
486 !S_ISREG(lu_object_attr(&o->mot_obj)))
489 /* No size whereas MF_SOM_CHANGE is set means client failed to
490 * obtain ost attributes, drop the SOM cache on disk if so. */
492 (info->mti_ioepoch &&
493 info->mti_ioepoch->flags & MF_SOM_CHANGE &&
494 !(info->mti_attr.ma_attr.la_valid & LA_SIZE)))
495 act = MDT_SOM_DISABLE;
497 mutex_lock(&o->mot_ioepoch_mutex);
498 /* Mark the object it is the recovery state if we failed to obtain
500 if (act == MDT_SOM_DISABLE)
501 o->mot_flags |= MOF_SOM_RECOV;
503 if (!mdt_ioepoch_opened(o)) {
504 ioepoch = info->mti_ioepoch ?
505 info->mti_ioepoch->ioepoch : o->mot_ioepoch;
508 && !(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
509 rc = mdt_som_attr_set(info, o, ioepoch, act);
510 mdt_object_som_enable(o, ioepoch);
512 mutex_unlock(&o->mot_ioepoch_mutex);
516 int mdt_write_read(struct mdt_object *o)
520 mutex_lock(&o->mot_ioepoch_mutex);
521 rc = o->mot_writecount;
522 mutex_unlock(&o->mot_ioepoch_mutex);
526 int mdt_write_get(struct mdt_object *o)
530 mutex_lock(&o->mot_ioepoch_mutex);
531 if (o->mot_writecount < 0)
535 mutex_unlock(&o->mot_ioepoch_mutex);
539 void mdt_write_put(struct mdt_object *o)
542 mutex_lock(&o->mot_ioepoch_mutex);
544 mutex_unlock(&o->mot_ioepoch_mutex);
548 static int mdt_write_deny(struct mdt_object *o)
552 mutex_lock(&o->mot_ioepoch_mutex);
553 if (o->mot_writecount > 0)
557 mutex_unlock(&o->mot_ioepoch_mutex);
561 static void mdt_write_allow(struct mdt_object *o)
564 mutex_lock(&o->mot_ioepoch_mutex);
566 mutex_unlock(&o->mot_ioepoch_mutex);
570 /* there can be no real transaction so prepare the fake one */
571 static void mdt_empty_transno(struct mdt_thread_info *info, int rc)
573 struct mdt_device *mdt = info->mti_mdt;
574 struct ptlrpc_request *req = mdt_info_req(info);
575 struct tg_export_data *ted;
576 struct lsd_client_data *lcd;
579 /* transaction has occurred already */
580 if (lustre_msg_get_transno(req->rq_repmsg) != 0)
583 spin_lock(&mdt->mdt_lut.lut_translock);
585 if (info->mti_transno != 0) {
586 struct obd_export *exp = req->rq_export;
588 CERROR("%s: replay trans "LPU64" NID %s: rc = %d\n",
589 mdt_obd_name(mdt), info->mti_transno,
590 libcfs_nid2str(exp->exp_connection->c_peer.nid),
592 spin_unlock(&mdt->mdt_lut.lut_translock);
595 } else if (info->mti_transno == 0) {
596 info->mti_transno = ++mdt->mdt_lut.lut_last_transno;
598 /* should be replay */
599 if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
600 mdt->mdt_lut.lut_last_transno = info->mti_transno;
602 spin_unlock(&mdt->mdt_lut.lut_translock);
604 CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n",
606 req->rq_export->exp_obd->obd_last_committed);
608 req->rq_transno = info->mti_transno;
609 lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
611 /* update lcd in memory only for resent cases */
612 ted = &req->rq_export->exp_target_data;
614 mutex_lock(&ted->ted_lcd_lock);
616 if (info->mti_transno < lcd->lcd_last_transno &&
617 info->mti_transno != 0) {
618 /* This should happen during replay. Do not update
619 * last rcvd info if replay req transno < last transno,
620 * otherwise the following resend(after replay) can not
621 * be checked correctly by xid */
622 mutex_unlock(&ted->ted_lcd_lock);
623 CDEBUG(D_HA, "%s: transno = "LPU64" < last_transno = "LPU64"\n",
624 mdt_obd_name(mdt), info->mti_transno,
625 lcd->lcd_last_transno);
629 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
630 lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
631 if (info->mti_transno != 0)
632 lcd->lcd_last_close_transno = info->mti_transno;
633 lcd->lcd_last_close_xid = req->rq_xid;
634 lcd->lcd_last_close_result = rc;
636 /* VBR: save versions in last_rcvd for reconstruct. */
637 __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
639 lcd->lcd_pre_versions[0] = pre_versions[0];
640 lcd->lcd_pre_versions[1] = pre_versions[1];
641 lcd->lcd_pre_versions[2] = pre_versions[2];
642 lcd->lcd_pre_versions[3] = pre_versions[3];
644 if (info->mti_transno != 0)
645 lcd->lcd_last_transno = info->mti_transno;
647 lcd->lcd_last_xid = req->rq_xid;
648 lcd->lcd_last_result = rc;
649 lcd->lcd_last_data = info->mti_opdata;
651 mutex_unlock(&ted->ted_lcd_lock);
656 void mdt_mfd_set_mode(struct mdt_file_data *mfd, __u64 mode)
658 LASSERT(mfd != NULL);
660 CDEBUG(D_HA, DFID " Change mfd mode "LPO64" -> "LPO64".\n",
661 PFID(mdt_object_fid(mfd->mfd_object)), mfd->mfd_mode, mode);
663 mfd->mfd_mode = mode;
666 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
667 struct mdt_object *o, __u64 flags, int created)
669 struct ptlrpc_request *req = mdt_info_req(info);
670 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
671 struct mdt_file_data *mfd;
672 struct md_attr *ma = &info->mti_attr;
673 struct lu_attr *la = &ma->ma_attr;
674 struct mdt_body *repbody;
675 int rc = 0, isdir, isreg;
678 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
680 isreg = S_ISREG(la->la_mode);
681 isdir = S_ISDIR(la->la_mode);
682 if (isreg && !(ma->ma_valid & MA_LOV) && !(flags & MDS_OPEN_RELEASE)) {
684 * No EA, check whether it is will set regEA and dirEA since in
685 * above attr get, these size might be zero, so reset it, to
686 * retrieve the MD after create obj.
688 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
691 /* in replay case, p == NULL */
692 rc = mdt_create_data(info, p, o);
697 CDEBUG(D_INODE, "after open, ma_valid bit = "LPX64" lmm_size = %d\n",
698 ma->ma_valid, ma->ma_lmm_size);
700 if (ma->ma_valid & MA_LOV) {
701 LASSERT(ma->ma_lmm_size != 0);
702 repbody->eadatasize = ma->ma_lmm_size;
704 repbody->valid |= OBD_MD_FLDIREA;
706 repbody->valid |= OBD_MD_FLEASIZE;
709 if (flags & FMODE_WRITE) {
710 rc = mdt_write_get(o);
712 mdt_ioepoch_open(info, o, created);
713 repbody->ioepoch = o->mot_ioepoch;
715 } else if (flags & MDS_FMODE_EXEC) {
716 /* if file is released, we can't deny write because we must
717 * restore (write) it to access it.*/
718 if ((ma->ma_valid & MA_HSM) &&
719 (ma->ma_hsm.mh_flags & HS_RELEASED))
722 rc = mdt_write_deny(o);
727 rc = mo_open(info->mti_env, mdt_object_child(o),
728 created ? flags | MDS_OPEN_CREATED : flags);
732 mfd = mdt_mfd_new(med);
734 GOTO(err_out, rc = -ENOMEM);
737 * Keep a reference on this object for this open, and is
738 * released by mdt_mfd_close().
740 mdt_object_get(info->mti_env, o);
742 mfd->mfd_xid = req->rq_xid;
745 * @flags is always not zero. At least it should be FMODE_READ,
746 * FMODE_WRITE or MDS_FMODE_EXEC.
751 mdt_mfd_set_mode(mfd, flags);
753 atomic_inc(&o->mot_open_count);
754 if (flags & MDS_OPEN_LEASE)
755 atomic_inc(&o->mot_lease_count);
758 if (req_is_replay(req)) {
759 struct mdt_file_data *old_mfd;
760 /* Check wheather old cookie already exist in
761 * the list, becasue when do recovery, client
762 * might be disconnected from server, and
763 * restart replay, so there maybe some orphan
764 * mfd here, we should remove them */
765 LASSERT(info->mti_rr.rr_handle != NULL);
766 spin_lock(&med->med_open_lock);
767 old_mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle, true);
768 if (old_mfd != NULL) {
769 CDEBUG(D_HA, "delete orphan mfd = %p, fid = "DFID", "
770 "cookie = "LPX64"\n", mfd,
771 PFID(mdt_object_fid(mfd->mfd_object)),
772 info->mti_rr.rr_handle->cookie);
773 class_handle_unhash(&old_mfd->mfd_handle);
774 cfs_list_del_init(&old_mfd->mfd_list);
775 spin_unlock(&med->med_open_lock);
776 /* no attr update for that close */
778 ma->ma_valid |= MA_FLAGS;
779 ma->ma_attr_flags |= MDS_RECOV_OPEN;
780 mdt_mfd_close(info, old_mfd);
781 ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
782 ma->ma_valid &= ~MA_FLAGS;
784 spin_unlock(&med->med_open_lock);
785 CDEBUG(D_HA, "orphan mfd not found, fid = "DFID", "
786 "cookie = "LPX64"\n",
787 PFID(mdt_object_fid(mfd->mfd_object)),
788 info->mti_rr.rr_handle->cookie);
791 CDEBUG(D_HA, "Store old cookie "LPX64" in new mfd\n",
792 info->mti_rr.rr_handle->cookie);
794 mfd->mfd_old_handle.cookie = info->mti_rr.rr_handle->cookie;
797 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
799 if (req->rq_export->exp_disconnected) {
800 spin_lock(&med->med_open_lock);
801 class_handle_unhash(&mfd->mfd_handle);
802 cfs_list_del_init(&mfd->mfd_list);
803 spin_unlock(&med->med_open_lock);
804 mdt_mfd_close(info, mfd);
806 spin_lock(&med->med_open_lock);
807 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
808 spin_unlock(&med->med_open_lock);
811 mdt_empty_transno(info, rc);
816 if (flags & FMODE_WRITE)
817 /* XXX We also need to close io epoch here.
818 * See LU-1220 - green */
820 else if (flags & FMODE_EXEC)
825 int mdt_finish_open(struct mdt_thread_info *info,
826 struct mdt_object *p, struct mdt_object *o,
827 __u64 flags, int created, struct ldlm_reply *rep)
829 struct ptlrpc_request *req = mdt_info_req(info);
830 struct obd_export *exp = req->rq_export;
831 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
832 struct md_attr *ma = &info->mti_attr;
833 struct lu_attr *la = &ma->ma_attr;
834 struct mdt_file_data *mfd;
835 struct mdt_body *repbody;
837 int isreg, isdir, islnk;
841 LASSERT(ma->ma_valid & MA_INODE);
843 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
845 isreg = S_ISREG(la->la_mode);
846 isdir = S_ISDIR(la->la_mode);
847 islnk = S_ISLNK(la->la_mode);
848 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
850 /* LU-2275, simulate broken behaviour (esp. prevalent in
851 * pre-2.4 servers where a very strange reply is sent on error
852 * that looks like it was actually almost succesful and a failure at the
854 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) {
855 mdt_set_disposition(info, rep, DISP_OPEN_OPEN |
859 if (flags & MDS_OPEN_LOCK)
860 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
865 if (exp_connect_rmtclient(exp)) {
866 void *buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
868 rc = mdt_pack_remote_perm(info, o, buf);
870 repbody->valid &= ~OBD_MD_FLRMTPERM;
871 repbody->aclsize = 0;
873 repbody->valid |= OBD_MD_FLRMTPERM;
874 repbody->aclsize = sizeof(struct mdt_remote_perm);
877 #ifdef CONFIG_FS_POSIX_ACL
878 else if (exp_connect_flags(exp) & OBD_CONNECT_ACL) {
879 const struct lu_env *env = info->mti_env;
880 struct md_object *next = mdt_object_child(o);
881 struct lu_buf *buf = &info->mti_buf;
883 buf->lb_buf = req_capsule_server_get(info->mti_pill, &RMF_ACL);
884 buf->lb_len = req_capsule_get_size(info->mti_pill, &RMF_ACL,
886 if (buf->lb_len > 0) {
887 rc = mo_xattr_get(env, next, buf,
888 XATTR_NAME_ACL_ACCESS);
890 if (rc == -ENODATA) {
891 repbody->aclsize = 0;
892 repbody->valid |= OBD_MD_FLACL;
894 } else if (rc == -EOPNOTSUPP) {
897 CERROR("got acl size: %d\n", rc);
900 repbody->aclsize = rc;
901 repbody->valid |= OBD_MD_FLACL;
908 if (info->mti_mdt->mdt_lut.lut_mds_capa &&
909 exp_connect_flags(exp) & OBD_CONNECT_MDS_CAPA) {
910 struct lustre_capa *capa;
912 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA1);
914 capa->lc_opc = CAPA_OPC_MDS_DEFAULT;
915 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
918 repbody->valid |= OBD_MD_FLMDSCAPA;
920 if (info->mti_mdt->mdt_lut.lut_oss_capa &&
921 exp_connect_flags(exp) & OBD_CONNECT_OSS_CAPA &&
922 S_ISREG(lu_object_attr(&o->mot_obj))) {
923 struct lustre_capa *capa;
925 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
927 capa->lc_opc = CAPA_OPC_OSS_DEFAULT | capa_open_opc(flags);
928 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
931 repbody->valid |= OBD_MD_FLOSSCAPA;
935 * If we are following a symlink, don't open; and do not return open
936 * handle for special nodes as client required.
938 if (islnk || (!isreg && !isdir &&
939 (exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) {
940 lustre_msg_set_transno(req->rq_repmsg, 0);
945 * We need to return the existing object's fid back, so it is done here,
946 * after preparing the reply.
948 if (!created && (flags & MDS_OPEN_EXCL) && (flags & MDS_OPEN_CREAT))
951 /* This can't be done earlier, we need to return reply body */
953 if (flags & (MDS_OPEN_CREAT | FMODE_WRITE)) {
954 /* We are trying to create or write an existing dir. */
957 } else if (flags & MDS_OPEN_DIRECTORY)
960 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
961 OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE)) {
966 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
967 spin_lock(&med->med_open_lock);
968 cfs_list_for_each(t, &med->med_open_head) {
969 mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list);
970 if (mfd->mfd_xid == req->rq_xid)
974 spin_unlock(&med->med_open_lock);
977 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
978 /*set repbody->ea_size for resent case*/
979 if (ma->ma_valid & MA_LOV) {
980 LASSERT(ma->ma_lmm_size != 0);
981 repbody->eadatasize = ma->ma_lmm_size;
983 repbody->valid |= OBD_MD_FLDIREA;
985 repbody->valid |= OBD_MD_FLEASIZE;
987 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
992 rc = mdt_mfd_open(info, p, o, flags, created);
994 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
999 extern void mdt_req_from_lcd(struct ptlrpc_request *req,
1000 struct lsd_client_data *lcd);
1002 void mdt_reconstruct_open(struct mdt_thread_info *info,
1003 struct mdt_lock_handle *lhc)
1005 const struct lu_env *env = info->mti_env;
1006 struct mdt_device *mdt = info->mti_mdt;
1007 struct req_capsule *pill = info->mti_pill;
1008 struct ptlrpc_request *req = mdt_info_req(info);
1009 struct tg_export_data *ted = &req->rq_export->exp_target_data;
1010 struct lsd_client_data *lcd = ted->ted_lcd;
1011 struct md_attr *ma = &info->mti_attr;
1012 struct mdt_reint_record *rr = &info->mti_rr;
1013 __u64 flags = info->mti_spec.sp_cr_flags;
1014 struct ldlm_reply *ldlm_rep;
1015 struct mdt_object *parent;
1016 struct mdt_object *child;
1017 struct mdt_body *repbody;
1021 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1022 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
1023 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1025 ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
1026 ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD,
1028 ma->ma_need = MA_INODE | MA_HSM;
1029 if (ma->ma_lmm_size > 0)
1030 ma->ma_need |= MA_LOV;
1034 mdt_req_from_lcd(req, lcd);
1035 mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data);
1037 CDEBUG(D_INODE, "This is reconstruct open: disp="LPX64", result=%d\n",
1038 ldlm_rep->lock_policy_res1, req->rq_status);
1040 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) &&
1041 req->rq_status != 0)
1042 /* We did not create successfully, return error to client. */
1043 GOTO(out, rc = req->rq_status);
1045 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE)) {
1046 struct obd_export *exp = req->rq_export;
1048 * We failed after creation, but we do not know in which step
1049 * we failed. So try to check the child object.
1051 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1052 if (IS_ERR(parent)) {
1053 rc = PTR_ERR(parent);
1054 LCONSOLE_WARN("Parent "DFID" lookup error %d."
1055 " Evicting client %s with export %s.\n",
1056 PFID(rr->rr_fid1), rc,
1057 obd_uuid2str(&exp->exp_client_uuid),
1058 obd_export_nid2str(exp));
1059 mdt_export_evict(exp);
1062 child = mdt_object_find(env, mdt, rr->rr_fid2);
1063 if (IS_ERR(child)) {
1064 rc = PTR_ERR(child);
1065 LCONSOLE_WARN("Child "DFID" lookup error %d."
1066 " Evicting client %s with export %s.\n",
1067 PFID(mdt_object_fid(child)), rc,
1068 obd_uuid2str(&exp->exp_client_uuid),
1069 obd_export_nid2str(exp));
1070 mdt_object_put(env, parent);
1071 mdt_export_evict(exp);
1075 if (unlikely(mdt_object_remote(child))) {
1076 /* the child object was created on remote server */
1077 if (!mdt_is_dne_client(exp)) {
1078 /* Return -EIO for old client */
1079 mdt_object_put(env, parent);
1080 mdt_object_put(env, child);
1081 GOTO(out, rc = -EIO);
1083 repbody->fid1 = *rr->rr_fid2;
1084 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1087 if (mdt_object_exists(child)) {
1088 mdt_set_capainfo(info, 1, rr->rr_fid2,
1090 rc = mdt_attr_get_complex(info, child, ma);
1092 rc = mdt_finish_open(info, parent,
1096 /* the child does not exist, we should do
1098 mdt_object_put(env, parent);
1099 mdt_object_put(env, child);
1100 GOTO(regular_open, 0);
1103 mdt_object_put(env, parent);
1104 mdt_object_put(env, child);
1108 /* We did not try to create, so we are a pure open */
1109 rc = mdt_reint_open(info, lhc);
1114 req->rq_status = rc;
1115 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
1116 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
1119 int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep)
1121 __u64 flags = info->mti_spec.sp_cr_flags;
1122 struct mdt_reint_record *rr = &info->mti_rr;
1123 struct md_attr *ma = &info->mti_attr;
1124 struct mdt_object *o;
1128 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
1130 RETURN(rc = PTR_ERR(o));
1132 if (unlikely(mdt_object_remote(o))) {
1133 /* the child object was created on remote server */
1134 struct mdt_body *repbody;
1136 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1139 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1140 repbody->fid1 = *rr->rr_fid2;
1141 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1144 if (mdt_object_exists(o)) {
1145 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1149 rc = mdt_attr_get_complex(info, o, ma);
1151 rc = mdt_finish_open(info, NULL, o, flags, 0,
1158 mdt_object_put(info->mti_env, o);
1162 /* lock object for open */
1163 static int mdt_object_open_lock(struct mdt_thread_info *info,
1164 struct mdt_object *obj,
1165 struct mdt_lock_handle *lhc,
1168 struct md_attr *ma = &info->mti_attr;
1169 __u64 open_flags = info->mti_spec.sp_cr_flags;
1170 ldlm_mode_t lm = LCK_CR;
1171 bool acq_lease = !!(open_flags & MDS_OPEN_LEASE);
1172 bool try_layout = false;
1173 bool create_layout = false;
1178 mdt_lock_handle_init(lhc);
1180 if (req_is_replay(mdt_info_req(info)))
1183 if (S_ISREG(lu_object_attr(&obj->mot_obj))) {
1184 if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) &&
1185 md_should_create(open_flags))
1186 create_layout = true;
1187 if (exp_connect_layout(info->mti_exp) && !create_layout &&
1188 ma->ma_need & MA_LOV)
1193 /* lease open, acquire write mode of open sem */
1194 down_write(&obj->mot_open_sem);
1196 /* Lease exists and ask for new lease */
1197 if (atomic_read(&obj->mot_lease_count) > 0) {
1198 /* only exclusive open is supported, so lease
1199 * are conflicted to each other */
1200 GOTO(out, rc = -EBUSY);
1203 /* Lease must be with open lock */
1204 if (!(open_flags & MDS_OPEN_LOCK)) {
1205 CERROR("Request lease for file:"DFID ", but open lock "
1206 "is missed, open_flags = "LPO64".\n",
1207 PFID(mdt_object_fid(obj)), open_flags);
1208 GOTO(out, rc = -EPROTO);
1211 /* XXX: only exclusive open is supported. */
1213 *ibits = MDS_INODELOCK_OPEN;
1215 /* never grant LCK_EX layout lock to client */
1217 } else { /* normal open */
1218 /* normal open holds read mode of open sem */
1219 down_read(&obj->mot_open_sem);
1221 if (open_flags & MDS_OPEN_LOCK) {
1222 if (open_flags & FMODE_WRITE)
1224 /* if file is released, we can't deny write because we must
1225 * restore (write) it to access it. */
1226 else if ((open_flags & MDS_FMODE_EXEC) &&
1227 !((ma->ma_valid & MA_HSM) &&
1228 (ma->ma_hsm.mh_flags & HS_RELEASED)))
1233 *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN;
1234 } else if (atomic_read(&obj->mot_lease_count) > 0) {
1235 if (open_flags & FMODE_WRITE)
1241 *ibits = MDS_INODELOCK_OPEN;
1244 lhc = &info->mti_lh[MDT_LH_LOCAL];
1246 CDEBUG(D_INODE, "normal open:"DFID" lease count: %d, lm: %d\n",
1247 PFID(mdt_object_fid(obj)),
1248 atomic_read(&obj->mot_open_count), lm);
1251 mdt_lock_reg_init(lhc, lm);
1253 /* one problem to return layout lock on open is that it may result
1254 * in too many layout locks cached on the client side. */
1255 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) {
1256 /* return lookup lock to validate inode at the client side,
1257 * this is pretty important otherwise mdt will return layout
1258 * lock for each open.
1259 * However this is a double-edged sword because changing
1260 * permission will revoke huge # of LOOKUP locks. */
1261 *ibits |= MDS_INODELOCK_LAYOUT | MDS_INODELOCK_LOOKUP;
1262 if (!mdt_object_lock_try(info, obj, lhc, *ibits,
1264 *ibits &= ~(MDS_INODELOCK_LAYOUT|MDS_INODELOCK_LOOKUP);
1266 rc = mdt_object_lock(info, obj, lhc, *ibits,
1269 } else if (*ibits != 0) {
1270 rc = mdt_object_lock(info, obj, lhc, *ibits, MDT_CROSS_LOCK);
1273 CDEBUG(D_INODE, "Requested bits lock:"DFID ", ibits = "LPX64
1274 ", open_flags = "LPO64", try_layout = %d, rc = %d\n",
1275 PFID(mdt_object_fid(obj)), *ibits, open_flags, try_layout, rc);
1277 /* will change layout, revoke layout locks by enqueuing EX lock. */
1278 if (rc == 0 && create_layout) {
1279 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
1281 CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID
1282 ", open_flags = "LPO64"\n",
1283 PFID(mdt_object_fid(obj)), open_flags);
1285 LASSERT(!try_layout);
1286 mdt_lock_handle_init(ll);
1287 mdt_lock_reg_init(ll, LCK_EX);
1288 rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT,
1291 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2);
1294 /* Check if there is any other open handles after acquiring
1295 * open lock. At this point, caching open handles have been revoked
1297 * XXX: Now only exclusive open is supported. Need to check the
1298 * type of open for generic lease support. */
1299 if (rc == 0 && acq_lease) {
1300 struct ptlrpc_request *req = mdt_info_req(info);
1301 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
1302 struct mdt_file_data *mfd;
1303 bool is_replay_or_resent;
1306 /* For lease: application can open a file and then apply lease,
1307 * @handle contains original open handle in that case.
1308 * In recovery, open REQ will be replayed and the lease REQ may
1309 * be resent that means the open handle is already stale, so we
1310 * need to fix it up here by finding new handle. */
1311 is_replay_or_resent = req_is_replay(req) ||
1312 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT;
1314 /* if the request is _not_ a replay request, rr_handle
1315 * may be used to hold an openhandle which is issuing the
1316 * lease request, so that this openhandle doesn't count. */
1317 mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle,
1318 is_replay_or_resent);
1322 CDEBUG(D_INODE, "acq_lease "DFID": openers: %d, want: %d\n",
1323 PFID(mdt_object_fid(obj)),
1324 atomic_read(&obj->mot_open_count), open_count);
1326 if (atomic_read(&obj->mot_open_count) > open_count)
1327 GOTO(out, rc = -EBUSY);
1335 static void mdt_object_open_unlock(struct mdt_thread_info *info,
1336 struct mdt_object *obj,
1337 struct mdt_lock_handle *lhc,
1338 __u64 ibits, int rc)
1340 __u64 open_flags = info->mti_spec.sp_cr_flags;
1341 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LOCAL];
1344 if (req_is_replay(mdt_info_req(info)))
1347 /* Release local lock - the lock put in MDT_LH_LOCAL will never
1348 * return to client side. */
1349 if (lustre_handle_is_used(&ll->mlh_reg_lh))
1350 mdt_object_unlock(info, obj, ll, 1);
1352 ll = &info->mti_lh[MDT_LH_LAYOUT];
1353 /* Release local layout lock, layout was created */
1354 if (lustre_handle_is_used(&ll->mlh_reg_lh)) {
1355 LASSERT(!(ibits & MDS_INODELOCK_LAYOUT));
1356 mdt_object_unlock(info, obj, ll, 1);
1359 if (open_flags & MDS_OPEN_LEASE)
1360 up_write(&obj->mot_open_sem);
1362 up_read(&obj->mot_open_sem);
1364 /* Cross-ref case, the lock should be returned to the client */
1365 if (ibits == 0 || rc == -EREMOTE)
1368 if (!(open_flags & MDS_OPEN_LOCK) && !(ibits & MDS_INODELOCK_LAYOUT)) {
1369 /* for the open request, the lock will only return to client
1370 * if open or layout lock is granted. */
1375 struct ldlm_reply *ldlm_rep;
1377 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1378 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1379 mdt_object_unlock(info, obj, lhc, 1);
1385 * Check release is permitted for the current HSM flags.
1387 static bool mdt_hsm_release_allow(const struct md_attr *ma)
1389 if (!(ma->ma_valid & MA_HSM))
1392 if (ma->ma_hsm.mh_flags & (HS_DIRTY|HS_NORELEASE|HS_LOST))
1395 if (!(ma->ma_hsm.mh_flags & HS_ARCHIVED))
1401 int mdt_open_by_fid_lock(struct mdt_thread_info *info, struct ldlm_reply *rep,
1402 struct mdt_lock_handle *lhc)
1404 const struct lu_env *env = info->mti_env;
1405 struct mdt_device *mdt = info->mti_mdt;
1406 __u64 flags = info->mti_spec.sp_cr_flags;
1407 struct mdt_reint_record *rr = &info->mti_rr;
1408 struct md_attr *ma = &info->mti_attr;
1409 struct mdt_object *parent= NULL;
1410 struct mdt_object *o;
1415 if (md_should_create(flags) && !(flags & MDS_OPEN_HAS_EA)) {
1416 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1417 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1418 if (IS_ERR(parent)) {
1419 CDEBUG(D_INODE, "Fail to find parent "DFID
1420 " for anonymous created %ld, try to"
1421 " use server-side parent.\n",
1422 PFID(rr->rr_fid1), PTR_ERR(parent));
1427 ma->ma_need |= MA_PFID;
1430 o = mdt_object_find(env, mdt, rr->rr_fid2);
1432 RETURN(rc = PTR_ERR(o));
1434 if (mdt_object_remote(o)) {
1435 CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n",
1436 mdt_obd_name(info->mti_mdt),
1438 GOTO(out, rc = -EREMOTE);
1439 } else if (!mdt_object_exists(o)) {
1440 mdt_set_disposition(info, rep,
1444 GOTO(out, rc = -ENOENT);
1447 mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1449 if (flags & MDS_OPEN_RELEASE)
1450 ma->ma_need |= MA_HSM;
1451 rc = mdt_attr_get_complex(info, o, ma);
1455 /* If a release request, check file flags are fine and ask for an
1456 * exclusive open access. */
1457 if (flags & MDS_OPEN_RELEASE && !mdt_hsm_release_allow(ma))
1458 GOTO(out, rc = -EPERM);
1460 rc = mdt_object_open_lock(info, o, lhc, &ibits);
1462 GOTO(out_unlock, rc);
1464 if (ma->ma_valid & MA_PFID) {
1465 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1466 if (IS_ERR(parent)) {
1467 CDEBUG(D_INODE, "Fail to find parent "DFID
1468 " for anonymous created %ld, try to"
1469 " use system default.\n",
1470 PFID(&ma->ma_pfid), PTR_ERR(parent));
1475 rc = mdt_finish_open(info, parent, o, flags, 0, rep);
1477 mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
1478 if (flags & MDS_OPEN_LOCK)
1479 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1480 if (flags & MDS_OPEN_LEASE)
1481 mdt_set_disposition(info, rep, DISP_OPEN_LEASE);
1483 GOTO(out_unlock, rc);
1486 mdt_object_open_unlock(info, o, lhc, ibits, rc);
1488 mdt_object_put(env, o);
1490 mdt_object_put(env, parent);
1494 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1495 static int mdt_cross_open(struct mdt_thread_info *info,
1496 const struct lu_fid *parent_fid,
1497 const struct lu_fid *fid,
1498 struct ldlm_reply *rep, __u32 flags)
1500 struct md_attr *ma = &info->mti_attr;
1501 struct mdt_object *o;
1505 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1507 RETURN(rc = PTR_ERR(o));
1509 if (mdt_object_remote(o)) {
1510 /* Something is wrong here, the object is on another MDS! */
1511 CERROR("%s: "DFID" isn't on this server!: rc = %d\n",
1512 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1513 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1515 "Object isn't on this server! FLD error?\n");
1518 if (mdt_object_exists(o)) {
1519 /* Do permission check for cross-open. */
1520 rc = mo_permission(info->mti_env, NULL,
1521 mdt_object_child(o),
1522 NULL, flags | MDS_OPEN_CROSS);
1526 mdt_set_capainfo(info, 0, fid, BYPASS_CAPA);
1527 rc = mdt_attr_get_complex(info, o, ma);
1531 /* Do not create lov object if the fid is opened
1533 if (S_ISREG(ma->ma_attr.la_mode) &&
1534 !(ma->ma_valid & MA_LOV) && (flags & FMODE_WRITE) &&
1535 fid_is_obf(parent_fid))
1536 GOTO(out, rc = -EPERM);
1538 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1541 * Something is wrong here. lookup was positive but
1542 * there is no object!
1544 CERROR("%s: "DFID" doesn't exist!: rc = %d\n",
1545 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1550 mdt_object_put(info->mti_env, o);
1554 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1556 struct mdt_device *mdt = info->mti_mdt;
1557 struct ptlrpc_request *req = mdt_info_req(info);
1558 struct mdt_object *parent;
1559 struct mdt_object *child;
1560 struct mdt_lock_handle *lh;
1561 struct ldlm_reply *ldlm_rep;
1562 struct mdt_body *repbody;
1563 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1564 struct md_attr *ma = &info->mti_attr;
1565 __u64 create_flags = info->mti_spec.sp_cr_flags;
1567 struct mdt_reint_record *rr = &info->mti_rr;
1568 struct lu_name *lname;
1574 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1575 (obd_timeout + 1) / 4);
1577 mdt_counter_incr(req, LPROC_MDT_OPEN);
1578 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1580 ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
1581 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD,
1583 ma->ma_need = MA_INODE;
1584 if (ma->ma_lmm_size > 0)
1585 ma->ma_need |= MA_LOV;
1589 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1590 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1592 if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) {
1593 CERROR("file join is not supported anymore.\n");
1594 GOTO(out, result = err_serious(-EOPNOTSUPP));
1596 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1598 if ((create_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1599 info->mti_spec.u.sp_ea.eadata == NULL)
1600 GOTO(out, result = err_serious(-EINVAL));
1602 CDEBUG(D_INODE, "I am going to open "DFID"/(%s->"DFID") "
1603 "cr_flag="LPO64" mode=0%06o msg_flag=0x%x\n",
1604 PFID(rr->rr_fid1), rr->rr_name,
1605 PFID(rr->rr_fid2), create_flags,
1606 ma->ma_attr.la_mode, msg_flags);
1607 if (info->mti_cross_ref) {
1608 /* This is cross-ref open */
1609 mdt_set_disposition(info, ldlm_rep,
1610 (DISP_IT_EXECD | DISP_LOOKUP_EXECD |
1612 result = mdt_cross_open(info, rr->rr_fid2, rr->rr_fid1,
1613 ldlm_rep, create_flags);
1615 } else if (req_is_replay(req) ||
1616 (req->rq_export->exp_libclient && create_flags & MDS_OPEN_HAS_EA)) {
1617 /* This is a replay request or from liblustre with ea. */
1618 result = mdt_open_by_fid(info, ldlm_rep);
1620 if (result != -ENOENT) {
1621 if (req->rq_export->exp_libclient &&
1622 create_flags & MDS_OPEN_HAS_EA)
1623 GOTO(out, result = 0);
1626 /* We didn't find the correct object, so we need to re-create it
1627 * via a regular replay. */
1628 if (!(create_flags & MDS_OPEN_CREAT)) {
1629 DEBUG_REQ(D_ERROR, req,
1630 "OPEN & CREAT not in open replay/by_fid.");
1631 GOTO(out, result = -EFAULT);
1633 CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
1634 } else if ((rr->rr_namelen == 0 && create_flags & MDS_OPEN_LOCK) ||
1635 (create_flags & MDS_OPEN_BY_FID)) {
1636 result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
1637 /* If result is 0 then open by FID has found the file
1638 * and there is nothing left for us to do here. More
1639 * generally if it is anything other than -ENOENT or
1640 * -EREMOTE then we return that now. If -ENOENT and
1641 * MDS_OPEN_CREAT is set then we must create the file
1642 * below. If -EREMOTE then we need to return a LOOKUP
1643 * lock to the client, which we do below. Hence this
1644 * odd looking condition. See LU-2523. */
1645 if (!(result == -ENOENT && (create_flags & MDS_OPEN_CREAT)) &&
1649 if (unlikely(rr->rr_namelen == 0))
1650 GOTO(out, result = -EINVAL);
1652 CDEBUG(D_INFO, "No object(2), continue as regular open.\n");
1655 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1656 GOTO(out, result = err_serious(-ENOMEM));
1658 mdt_set_disposition(info, ldlm_rep,
1659 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1661 lh = &info->mti_lh[MDT_LH_PARENT];
1662 mdt_lock_pdo_init(lh, (create_flags & MDS_OPEN_CREAT) ?
1663 LCK_PW : LCK_PR, rr->rr_name, rr->rr_namelen);
1665 parent = mdt_object_find_lock(info, rr->rr_fid1, lh,
1666 MDS_INODELOCK_UPDATE);
1668 GOTO(out, result = PTR_ERR(parent));
1670 /* get and check version of parent */
1671 result = mdt_version_get_check(info, parent, 0);
1673 GOTO(out_parent, result);
1675 fid_zero(child_fid);
1677 lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen);
1678 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1679 lname, child_fid, &info->mti_spec);
1680 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1681 "looking for "DFID"/%s, result fid="DFID"\n",
1682 PFID(mdt_object_fid(parent)), rr->rr_name, PFID(child_fid));
1684 if (result != 0 && result != -ENOENT && result != -ESTALE)
1685 GOTO(out_parent, result);
1687 if (result == -ENOENT || result == -ESTALE) {
1688 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1689 if (result == -ESTALE) {
1691 * -ESTALE means the parent is a dead(unlinked) dir, so
1692 * it should return -ENOENT to in accordance with the
1693 * original mds implementaion.
1695 GOTO(out_parent, result = -ENOENT);
1697 if (!(create_flags & MDS_OPEN_CREAT))
1698 GOTO(out_parent, result);
1699 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
1700 GOTO(out_parent, result = -EROFS);
1701 *child_fid = *info->mti_rr.rr_fid2;
1702 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1704 /* In the function below, .hs_keycmp resolves to
1705 * lu_obj_hop_keycmp() */
1706 /* coverity[overrun-buffer-val] */
1707 child = mdt_object_new(info->mti_env, mdt, child_fid);
1710 * Check for O_EXCL is moved to the mdt_finish_open(), we need to
1711 * return FID back in that case.
1713 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1714 child = mdt_object_find(info->mti_env, mdt, child_fid);
1717 GOTO(out_parent, result = PTR_ERR(child));
1719 /** check version of child */
1720 rc = mdt_version_get_check(info, child, 1);
1722 GOTO(out_child, result = rc);
1724 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1725 if (result == -ENOENT) {
1726 /* Create under OBF and .lustre is not permitted */
1727 if (fid_is_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1))
1728 GOTO(out_child, result = -EPERM);
1730 /* save versions in reply */
1731 mdt_version_get_save(info, parent, 0);
1732 mdt_version_get_save(info, child, 1);
1734 /* version of child will be changed */
1735 info->mti_mos = child;
1737 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1738 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1740 /* Let lower layers know what is lock mode on directory. */
1741 info->mti_spec.sp_cr_mode =
1742 mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
1745 * Do not perform lookup sanity check. We know that name does
1748 info->mti_spec.sp_cr_lookup = 0;
1749 info->mti_spec.sp_feat = &dt_directory_features;
1751 result = mdo_create(info->mti_env,
1752 mdt_object_child(parent),
1754 mdt_object_child(child),
1757 if (result == -ERESTART) {
1758 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1759 GOTO(out_child, result);
1762 /* XXX: we should call this once, see few lines below */
1764 result = mdt_attr_get_complex(info, child, ma);
1767 GOTO(out_child, result);
1772 * The object is on remote node, return its FID for remote open.
1774 if (mdt_object_remote(child)) {
1776 * Check if this lock already was sent to client and
1777 * this is resent case. For resent case do not take lock
1778 * again, use what is already granted.
1780 LASSERT(lhc != NULL);
1782 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1783 struct ldlm_lock *lock;
1785 LASSERT(msg_flags & MSG_RESENT);
1787 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1789 CERROR("Invalid lock handle "LPX64"\n",
1790 lhc->mlh_reg_lh.cookie);
1793 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1794 &lock->l_resource->lr_name));
1795 LDLM_LOCK_PUT(lock);
1798 mdt_lock_handle_init(lhc);
1799 mdt_lock_reg_init(lhc, LCK_PR);
1801 rc = mdt_object_lock(info, child, lhc,
1802 MDS_INODELOCK_LOOKUP,
1805 repbody->fid1 = *mdt_object_fid(child);
1806 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1811 GOTO(out_child, result);
1813 if (mdt_object_exists(child)) {
1814 /* We have to get attr & LOV EA & HSM for this
1816 ma->ma_need |= MA_HSM;
1817 result = mdt_attr_get_complex(info, child, ma);
1819 /*object non-exist!!!*/
1825 LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh));
1827 /* get openlock if this is not replay and if a client requested it */
1828 if (!req_is_replay(req)) {
1829 rc = mdt_object_open_lock(info, child, lhc, &ibits);
1831 GOTO(out_child_unlock, result = rc);
1832 else if (create_flags & MDS_OPEN_LOCK)
1833 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1836 /* Try to open it now. */
1837 rc = mdt_finish_open(info, parent, child, create_flags,
1841 /* openlock will be released if mdt_finish_open failed */
1842 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1844 if (created && create_flags & MDS_OPEN_VOLATILE) {
1845 CERROR("%s: cannot open volatile file "DFID", orphan "
1846 "file will be left in PENDING directory until "
1847 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1848 PFID(mdt_object_fid(child)), rc);
1849 GOTO(out_child_unlock, result);
1855 ma->ma_cookie_size = 0;
1856 rc = mdo_unlink(info->mti_env,
1857 mdt_object_child(parent),
1858 mdt_object_child(child),
1860 &info->mti_attr, 0);
1862 CERROR("%s: "DFID" cleanup of open: rc = %d\n",
1863 mdt_obd_name(info->mti_mdt),
1864 PFID(mdt_object_fid(child)), rc);
1865 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1870 mdt_object_open_unlock(info, child, lhc, ibits, result);
1872 mdt_object_put(info->mti_env, child);
1874 mdt_object_unlock_put(info, parent, lh, result || !created);
1877 lustre_msg_set_transno(req->rq_repmsg, 0);
1882 * Create an orphan object use local root.
1884 static struct mdt_object *mdt_orphan_open(struct mdt_thread_info *info,
1885 struct mdt_device *mdt,
1886 const struct lu_fid *fid,
1887 struct md_attr *attr, fmode_t fmode)
1889 const struct lu_env *env = info->mti_env;
1890 struct md_op_spec *spec = &info->mti_spec;
1891 struct lu_fid *local_root_fid = &info->mti_tmp_fid1;
1892 struct mdt_object *obj = NULL;
1893 struct mdt_object *local_root;
1894 static const char name[] = "i_am_nobody";
1895 struct lu_name *lname;
1896 struct lu_ucred *uc;
1897 cfs_cap_t uc_cap_save;
1901 rc = dt_root_get(env, mdt->mdt_bottom, local_root_fid);
1903 RETURN(ERR_PTR(rc));
1905 local_root = mdt_object_find(env, mdt, local_root_fid);
1906 if (IS_ERR(local_root))
1909 obj = mdt_object_new(env, mdt, fid);
1911 GOTO(out, rc = PTR_ERR(obj));
1913 spec->sp_cr_lookup = 0;
1914 spec->sp_feat = &dt_directory_features;
1915 spec->sp_cr_mode = MDL_MINMODE; /* no lock */
1916 spec->sp_cr_flags = MDS_OPEN_VOLATILE | fmode;
1917 if (attr->ma_valid & MA_LOV) {
1918 spec->u.sp_ea.eadata = attr->ma_lmm;
1919 spec->u.sp_ea.eadatalen = attr->ma_lmm_size;
1920 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1922 spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE;
1925 lname = mdt_name(env, (char *)name, sizeof(name) - 1);
1928 uc_cap_save = uc->uc_cap;
1929 uc->uc_cap |= 1 << CFS_CAP_DAC_OVERRIDE;
1930 rc = mdo_create(env, mdt_object_child(local_root), lname,
1931 mdt_object_child(obj), spec, attr);
1932 uc->uc_cap = uc_cap_save;
1934 CERROR("%s: cannot create volatile file "DFID": rc = %d\n",
1935 mdt_obd_name(mdt), PFID(fid), rc);
1939 rc = mo_open(env, mdt_object_child(obj), MDS_OPEN_CREATED);
1941 CERROR("%s: cannot open volatile file "DFID", orphan "
1942 "file will be left in PENDING directory until "
1943 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1950 mdt_object_put(env, obj);
1953 mdt_object_put(env, local_root);
1957 static int mdt_hsm_release(struct mdt_thread_info *info, struct mdt_object *o,
1960 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LAYOUT];
1961 struct close_data *data;
1962 struct ldlm_lock *lease;
1963 struct mdt_object *orphan;
1964 struct md_attr *orp_ma;
1971 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
1974 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
1978 lease = ldlm_handle2lock(&data->cd_handle);
1982 /* try to hold open_sem so that nobody else can open the file */
1983 if (!down_write_trylock(&o->mot_open_sem)) {
1984 ldlm_lock_cancel(lease);
1985 GOTO(out_reprocess, rc = -EBUSY);
1988 /* Check if the lease open lease has already canceled */
1989 lock_res_and_lock(lease);
1990 lease_broken = ldlm_is_cancel(lease);
1991 unlock_res_and_lock(lease);
1993 LDLM_DEBUG(lease, DFID " lease broken? %d\n",
1994 PFID(mdt_object_fid(o)), lease_broken);
1996 /* Cancel server side lease. Client side counterpart should
1997 * have been cancelled. It's okay to cancel it now as we've
1998 * held mot_open_sem. */
1999 ldlm_lock_cancel(lease);
2001 if (lease_broken) /* don't perform release task */
2002 GOTO(out_unlock, rc = -ESTALE);
2004 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
2005 GOTO(out_unlock, rc = -EINVAL);
2007 /* ma_need was set before but it seems fine to change it in order to
2008 * avoid modifying the one from RPC */
2009 ma->ma_need = MA_HSM;
2010 rc = mdt_attr_get_complex(info, o, ma);
2012 GOTO(out_unlock, rc);
2014 if (!mdt_hsm_release_allow(ma))
2015 GOTO(out_unlock, rc = -EPERM);
2017 /* already released? */
2018 if (ma->ma_hsm.mh_flags & HS_RELEASED)
2019 GOTO(out_unlock, rc = 0);
2021 /* Compare on-disk and packed data_version */
2022 if (data->cd_data_version != ma->ma_hsm.mh_arch_ver) {
2023 CDEBUG(D_HSM, DFID" data_version mismatches: packed="LPU64
2024 " and on-disk="LPU64"\n", PFID(mdt_object_fid(o)),
2025 data->cd_data_version, ma->ma_hsm.mh_arch_ver);
2026 GOTO(out_unlock, rc = -EPERM);
2029 ma->ma_valid = MA_INODE;
2030 ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME | LA_SIZE;
2031 rc = mo_attr_set(info->mti_env, mdt_object_child(o), ma);
2033 GOTO(out_unlock, rc);
2035 ma->ma_need = MA_INODE | MA_LOV;
2036 rc = mdt_attr_get_complex(info, o, ma);
2038 GOTO(out_unlock, rc);
2040 if (!(ma->ma_valid & MA_LOV)) {
2041 /* Even empty file are released */
2042 memset(ma->ma_lmm, 0, sizeof(*ma->ma_lmm));
2043 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEF);
2044 ma->ma_lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
2045 ma->ma_lmm->lmm_stripe_size = cpu_to_le32(LOV_MIN_STRIPE_SIZE);
2046 ma->ma_lmm_size = sizeof(*ma->ma_lmm);
2048 /* Magic must be LOV_MAGIC_Vx_DEF otherwise LOD will interpret
2049 * ma_lmm as lov_user_md, then it will be confused by union of
2050 * layout_gen and stripe_offset. */
2051 if (le32_to_cpu(ma->ma_lmm->lmm_magic) == LOV_MAGIC_V1)
2052 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEF);
2053 else if (le32_to_cpu(ma->ma_lmm->lmm_magic) == LOV_MAGIC_V3)
2054 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V3_DEF);
2056 GOTO(out_unlock, rc = -EINVAL);
2059 /* Set file as released */
2060 ma->ma_lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
2062 /* Hopefully it's not used in this call path */
2063 orp_ma = &info->mti_u.som.attr;
2064 orp_ma->ma_attr.la_mode = S_IFREG | S_IWUSR;
2065 orp_ma->ma_attr.la_uid = ma->ma_attr.la_uid;
2066 orp_ma->ma_attr.la_gid = ma->ma_attr.la_gid;
2067 orp_ma->ma_attr.la_valid = LA_MODE | LA_UID | LA_GID;
2068 orp_ma->ma_lmm = ma->ma_lmm;
2069 orp_ma->ma_lmm_size = ma->ma_lmm_size;
2070 orp_ma->ma_valid = MA_INODE | MA_LOV;
2071 orphan = mdt_orphan_open(info, info->mti_mdt, &data->cd_fid, orp_ma,
2073 if (IS_ERR(orphan)) {
2074 CERROR("%s: cannot open orphan file "DFID": rc = %ld\n",
2075 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid),
2077 GOTO(out_unlock, rc = PTR_ERR(orphan));
2080 /* Set up HSM attribute for orphan object */
2081 CLASSERT(sizeof(struct hsm_attrs) <= sizeof(info->mti_xattr_buf));
2082 buf = &info->mti_buf;
2083 buf->lb_buf = info->mti_xattr_buf;
2084 buf->lb_len = sizeof(struct hsm_attrs);
2085 ma->ma_hsm.mh_flags |= HS_RELEASED;
2086 lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
2087 ma->ma_hsm.mh_flags &= ~HS_RELEASED;
2089 mdt_lock_reg_init(lh, LCK_EX);
2090 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_LAYOUT |
2091 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
2093 GOTO(out_close, rc);
2095 rc = mo_xattr_set(info->mti_env, mdt_object_child(orphan), buf,
2099 /* Swap layout with orphan object */
2100 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o),
2101 mdt_object_child(orphan),
2102 SWAP_LAYOUTS_MDS_HSM);
2104 /* Release exclusive LL */
2105 mdt_object_unlock(info, o, lh, 1);
2110 /* Close orphan object anyway */
2111 rc2 = mo_close(info->mti_env, mdt_object_child(orphan), orp_ma,
2114 CERROR("%s: error closing volatile file "DFID": rc = %d\n",
2115 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid), rc2);
2116 LU_OBJECT_DEBUG(D_HSM, info->mti_env, &orphan->mot_obj,
2118 mdt_object_put(info->mti_env, orphan);
2121 up_write(&o->mot_open_sem);
2123 if (rc == 0) { /* already released */
2124 struct mdt_body *repbody;
2125 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2126 LASSERT(repbody != NULL);
2127 repbody->valid |= OBD_MD_FLRELEASED;
2131 ldlm_reprocess_all(lease->l_resource);
2132 LDLM_LOCK_PUT(lease);
2140 #define MFD_CLOSED(mode) (((mode) & ~(MDS_FMODE_EPOCH | MDS_FMODE_SOM | \
2141 MDS_FMODE_TRUNC)) == MDS_FMODE_CLOSED)
2143 static int mdt_mfd_closed(struct mdt_file_data *mfd)
2145 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_mode));
2148 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
2150 struct mdt_object *o = mfd->mfd_object;
2151 struct md_object *next = mdt_object_child(o);
2152 struct md_attr *ma = &info->mti_attr;
2153 int ret = MDT_IOEPOCH_CLOSED;
2158 mode = mfd->mfd_mode;
2160 if (ma->ma_attr_flags & MDS_HSM_RELEASE) {
2161 rc = mdt_hsm_release(info, o, ma);
2163 CDEBUG(D_HSM, "%s: File " DFID " release failed: %d\n",
2164 mdt_obd_name(info->mti_mdt),
2165 PFID(mdt_object_fid(o)), rc);
2166 /* continue to close even error occurred. */
2170 if ((mode & FMODE_WRITE) || (mode & MDS_FMODE_TRUNC)) {
2172 ret = mdt_ioepoch_close(info, o);
2173 } else if (mode & MDS_FMODE_EXEC) {
2175 } else if (mode & MDS_FMODE_EPOCH) {
2176 ret = mdt_ioepoch_close(info, o);
2177 } else if (mode & MDS_FMODE_SOM) {
2178 ret = mdt_som_au_close(info, o);
2181 /* Update atime on close only. */
2182 if ((mode & MDS_FMODE_EXEC || mode & FMODE_READ || mode & FMODE_WRITE)
2183 && (ma->ma_valid & MA_INODE) && (ma->ma_attr.la_valid & LA_ATIME)) {
2184 /* Set the atime only. */
2185 ma->ma_valid = MA_INODE;
2186 ma->ma_attr.la_valid = LA_ATIME;
2187 rc = mo_attr_set(info->mti_env, next, ma);
2190 /* If file data is modified, add the dirty flag. */
2191 if (ma->ma_attr_flags & MDS_DATA_MODIFIED)
2192 rc = mdt_add_dirty_flag(info, o, ma);
2194 ma->ma_need |= MA_INODE;
2195 ma->ma_valid &= ~MA_INODE;
2197 if (!MFD_CLOSED(mode))
2198 rc = mo_close(info->mti_env, next, ma, mode);
2200 if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) {
2201 struct mdt_export_data *med;
2203 /* The IOepoch is still opened or SOM update is needed.
2204 * Put mfd back into the list. */
2205 LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
2206 mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ?
2207 MDS_FMODE_EPOCH : MDS_FMODE_SOM);
2209 LASSERT(mdt_info_req(info));
2210 med = &mdt_info_req(info)->rq_export->exp_mdt_data;
2211 spin_lock(&med->med_open_lock);
2212 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
2213 class_handle_hash_back(&mfd->mfd_handle);
2214 spin_unlock(&med->med_open_lock);
2216 if (ret == MDT_IOEPOCH_OPENED) {
2220 CDEBUG(D_INODE, "Size-on-MDS attribute update is "
2221 "needed on "DFID"\n", PFID(mdt_object_fid(o)));
2224 /* adjust open and lease count */
2225 if (mode & MDS_OPEN_LEASE) {
2226 LASSERT(atomic_read(&o->mot_lease_count) > 0);
2227 atomic_dec(&o->mot_lease_count);
2229 LASSERT(atomic_read(&o->mot_open_count) > 0);
2230 atomic_dec(&o->mot_open_count);
2233 mdt_object_put(info->mti_env, o);
2236 RETURN(rc ? rc : ret);
2239 int mdt_close(struct tgt_session_info *tsi)
2241 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2242 struct ptlrpc_request *req = tgt_ses_req(tsi);
2243 struct mdt_export_data *med;
2244 struct mdt_file_data *mfd;
2245 struct mdt_object *o;
2246 struct md_attr *ma = &info->mti_attr;
2247 struct mdt_body *repbody = NULL;
2251 mdt_counter_incr(req, LPROC_MDT_CLOSE);
2252 /* Close may come with the Size-on-MDS update. Unpack it. */
2253 rc = mdt_close_unpack(info);
2255 GOTO(out, rc = err_serious(rc));
2257 LASSERT(info->mti_ioepoch);
2259 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
2260 info->mti_mdt->mdt_max_mdsize);
2261 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
2262 info->mti_mdt->mdt_max_cookiesize);
2263 rc = req_capsule_server_pack(info->mti_pill);
2264 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2265 mdt_client_compatibility(info);
2267 mdt_fix_reply(info);
2268 mdt_exit_ucred(info);
2269 GOTO(out, rc = lustre_msg_get_status(req->rq_repmsg));
2272 /* Continue to close handle even if we can not pack reply */
2274 repbody = req_capsule_server_get(info->mti_pill,
2276 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
2278 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
2281 ma->ma_cookie = req_capsule_server_get(info->mti_pill,
2283 ma->ma_cookie_size = req_capsule_get_size(info->mti_pill,
2286 ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE;
2287 repbody->eadatasize = 0;
2288 repbody->aclsize = 0;
2290 rc = err_serious(rc);
2293 med = &req->rq_export->exp_mdt_data;
2294 spin_lock(&med->med_open_lock);
2295 mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
2296 req_is_replay(req));
2297 if (mdt_mfd_closed(mfd)) {
2298 spin_unlock(&med->med_open_lock);
2299 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
2300 ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1),
2301 info->mti_ioepoch->handle.cookie);
2302 /** not serious error since bug 3633 */
2305 class_handle_unhash(&mfd->mfd_handle);
2306 cfs_list_del_init(&mfd->mfd_list);
2307 spin_unlock(&med->med_open_lock);
2309 /* Do not lose object before last unlink. */
2310 o = mfd->mfd_object;
2311 mdt_object_get(info->mti_env, o);
2312 ret = mdt_mfd_close(info, mfd);
2313 if (repbody != NULL)
2314 rc = mdt_handle_last_unlink(info, o, ma);
2315 mdt_empty_transno(info, rc);
2316 mdt_object_put(info->mti_env, o);
2318 if (repbody != NULL) {
2319 mdt_client_compatibility(info);
2320 rc = mdt_fix_reply(info);
2323 mdt_exit_ucred(info);
2324 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
2325 GOTO(out, rc = err_serious(-ENOMEM));
2327 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
2328 OBD_FAIL_MDS_CLOSE_NET_REP))
2329 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
2331 mdt_thread_info_fini(info);
2332 RETURN(rc ? rc : ret);
2336 * DONE_WRITING rpc handler.
2338 * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()),
2339 * only those DONE_WRITING rpc will be replayed which really wrote smth on disk,
2340 * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just
2341 * skip attributes and reconstruct the reply here.
2343 int mdt_done_writing(struct tgt_session_info *tsi)
2345 struct ptlrpc_request *req = tgt_ses_req(tsi);
2346 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2347 struct mdt_body *repbody = NULL;
2348 struct mdt_export_data *med;
2349 struct mdt_file_data *mfd;
2353 rc = req_capsule_server_pack(tsi->tsi_pill);
2355 GOTO(out, rc = err_serious(rc));
2357 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
2358 repbody->eadatasize = 0;
2359 repbody->aclsize = 0;
2361 /* Done Writing may come with the Size-on-MDS update. Unpack it. */
2362 rc = mdt_close_unpack(info);
2364 GOTO(out, rc = err_serious(rc));
2366 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2367 mdt_exit_ucred(info);
2368 GOTO(out, rc = lustre_msg_get_status(req->rq_repmsg));
2371 med = &info->mti_exp->exp_mdt_data;
2372 spin_lock(&med->med_open_lock);
2373 mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
2374 req_is_replay(req));
2376 spin_unlock(&med->med_open_lock);
2377 CDEBUG(D_INODE, "no handle for done write: fid = "DFID
2378 ": cookie = "LPX64" ioepoch = "LPU64"\n",
2379 PFID(info->mti_rr.rr_fid1),
2380 info->mti_ioepoch->handle.cookie,
2381 info->mti_ioepoch->ioepoch);
2382 /* If this is a replay, reconstruct the transno. */
2383 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
2384 rc = info->mti_ioepoch->flags & MF_SOM_AU ?
2386 mdt_empty_transno(info, rc);
2389 GOTO(error_ucred, rc);
2392 LASSERT(mfd->mfd_mode == MDS_FMODE_EPOCH ||
2393 mfd->mfd_mode == MDS_FMODE_TRUNC);
2394 class_handle_unhash(&mfd->mfd_handle);
2395 cfs_list_del_init(&mfd->mfd_list);
2396 spin_unlock(&med->med_open_lock);
2398 /* Set EPOCH CLOSE flag if not set by client. */
2399 info->mti_ioepoch->flags |= MF_EPOCH_CLOSE;
2400 info->mti_attr.ma_valid = 0;
2402 info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
2403 OBD_ALLOC_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
2404 if (info->mti_attr.ma_lmm == NULL)
2405 GOTO(error_ucred, rc = -ENOMEM);
2407 rc = mdt_mfd_close(info, mfd);
2409 OBD_FREE_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
2410 mdt_empty_transno(info, rc);
2412 mdt_exit_ucred(info);
2414 mdt_thread_info_fini(info);