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_opts.mo_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;
921 if (info->mti_mdt->mdt_opts.mo_oss_capa &&
922 exp_connect_flags(exp) & OBD_CONNECT_OSS_CAPA &&
923 S_ISREG(lu_object_attr(&o->mot_obj))) {
924 struct lustre_capa *capa;
926 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
928 capa->lc_opc = CAPA_OPC_OSS_DEFAULT | capa_open_opc(flags);
929 rc = mo_capa_get(info->mti_env, mdt_object_child(o), capa, 0);
932 repbody->valid |= OBD_MD_FLOSSCAPA;
936 * If we are following a symlink, don't open; and do not return open
937 * handle for special nodes as client required.
939 if (islnk || (!isreg && !isdir &&
940 (exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) {
941 lustre_msg_set_transno(req->rq_repmsg, 0);
946 * We need to return the existing object's fid back, so it is done here,
947 * after preparing the reply.
949 if (!created && (flags & MDS_OPEN_EXCL) && (flags & MDS_OPEN_CREAT))
952 /* This can't be done earlier, we need to return reply body */
954 if (flags & (MDS_OPEN_CREAT | FMODE_WRITE)) {
955 /* We are trying to create or write an existing dir. */
958 } else if (flags & MDS_OPEN_DIRECTORY)
961 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
962 OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE)) {
967 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
968 spin_lock(&med->med_open_lock);
969 cfs_list_for_each(t, &med->med_open_head) {
970 mfd = cfs_list_entry(t, struct mdt_file_data, mfd_list);
971 if (mfd->mfd_xid == req->rq_xid)
975 spin_unlock(&med->med_open_lock);
978 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
979 /*set repbody->ea_size for resent case*/
980 if (ma->ma_valid & MA_LOV) {
981 LASSERT(ma->ma_lmm_size != 0);
982 repbody->eadatasize = ma->ma_lmm_size;
984 repbody->valid |= OBD_MD_FLDIREA;
986 repbody->valid |= OBD_MD_FLEASIZE;
988 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
993 rc = mdt_mfd_open(info, p, o, flags, created);
995 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
1000 extern void mdt_req_from_lcd(struct ptlrpc_request *req,
1001 struct lsd_client_data *lcd);
1003 void mdt_reconstruct_open(struct mdt_thread_info *info,
1004 struct mdt_lock_handle *lhc)
1006 const struct lu_env *env = info->mti_env;
1007 struct mdt_device *mdt = info->mti_mdt;
1008 struct req_capsule *pill = info->mti_pill;
1009 struct ptlrpc_request *req = mdt_info_req(info);
1010 struct tg_export_data *ted = &req->rq_export->exp_target_data;
1011 struct lsd_client_data *lcd = ted->ted_lcd;
1012 struct md_attr *ma = &info->mti_attr;
1013 struct mdt_reint_record *rr = &info->mti_rr;
1014 __u64 flags = info->mti_spec.sp_cr_flags;
1015 struct ldlm_reply *ldlm_rep;
1016 struct mdt_object *parent;
1017 struct mdt_object *child;
1018 struct mdt_body *repbody;
1022 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1023 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
1024 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
1026 ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
1027 ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD,
1029 ma->ma_need = MA_INODE | MA_HSM;
1030 if (ma->ma_lmm_size > 0)
1031 ma->ma_need |= MA_LOV;
1035 mdt_req_from_lcd(req, lcd);
1036 mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data);
1038 CDEBUG(D_INODE, "This is reconstruct open: disp="LPX64", result=%d\n",
1039 ldlm_rep->lock_policy_res1, req->rq_status);
1041 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) &&
1042 req->rq_status != 0)
1043 /* We did not create successfully, return error to client. */
1044 GOTO(out, rc = req->rq_status);
1046 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE)) {
1047 struct obd_export *exp = req->rq_export;
1049 * We failed after creation, but we do not know in which step
1050 * we failed. So try to check the child object.
1052 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1053 if (IS_ERR(parent)) {
1054 rc = PTR_ERR(parent);
1055 LCONSOLE_WARN("Parent "DFID" lookup error %d."
1056 " Evicting client %s with export %s.\n",
1057 PFID(rr->rr_fid1), rc,
1058 obd_uuid2str(&exp->exp_client_uuid),
1059 obd_export_nid2str(exp));
1060 mdt_export_evict(exp);
1063 child = mdt_object_find(env, mdt, rr->rr_fid2);
1064 if (IS_ERR(child)) {
1065 rc = PTR_ERR(child);
1066 LCONSOLE_WARN("Child "DFID" lookup error %d."
1067 " Evicting client %s with export %s.\n",
1068 PFID(mdt_object_fid(child)), rc,
1069 obd_uuid2str(&exp->exp_client_uuid),
1070 obd_export_nid2str(exp));
1071 mdt_object_put(env, parent);
1072 mdt_export_evict(exp);
1076 if (unlikely(mdt_object_remote(child))) {
1077 /* the child object was created on remote server */
1078 if (!mdt_is_dne_client(exp)) {
1079 /* Return -EIO for old client */
1080 mdt_object_put(env, parent);
1081 mdt_object_put(env, child);
1082 GOTO(out, rc = -EIO);
1084 repbody->fid1 = *rr->rr_fid2;
1085 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1088 if (mdt_object_exists(child)) {
1089 mdt_set_capainfo(info, 1, rr->rr_fid2,
1091 rc = mdt_attr_get_complex(info, child, ma);
1093 rc = mdt_finish_open(info, parent,
1097 /* the child does not exist, we should do
1099 mdt_object_put(env, parent);
1100 mdt_object_put(env, child);
1101 GOTO(regular_open, 0);
1104 mdt_object_put(env, parent);
1105 mdt_object_put(env, child);
1109 /* We did not try to create, so we are a pure open */
1110 rc = mdt_reint_open(info, lhc);
1115 req->rq_status = rc;
1116 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
1117 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
1120 int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep)
1122 __u64 flags = info->mti_spec.sp_cr_flags;
1123 struct mdt_reint_record *rr = &info->mti_rr;
1124 struct md_attr *ma = &info->mti_attr;
1125 struct mdt_object *o;
1129 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
1131 RETURN(rc = PTR_ERR(o));
1133 if (unlikely(mdt_object_remote(o))) {
1134 /* the child object was created on remote server */
1135 struct mdt_body *repbody;
1137 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1140 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1141 repbody->fid1 = *rr->rr_fid2;
1142 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1145 if (mdt_object_exists(o)) {
1146 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
1150 rc = mdt_attr_get_complex(info, o, ma);
1152 rc = mdt_finish_open(info, NULL, o, flags, 0,
1159 mdt_object_put(info->mti_env, o);
1163 /* lock object for open */
1164 static int mdt_object_open_lock(struct mdt_thread_info *info,
1165 struct mdt_object *obj,
1166 struct mdt_lock_handle *lhc,
1169 struct md_attr *ma = &info->mti_attr;
1170 __u64 open_flags = info->mti_spec.sp_cr_flags;
1171 ldlm_mode_t lm = LCK_CR;
1172 bool acq_lease = !!(open_flags & MDS_OPEN_LEASE);
1173 bool try_layout = false;
1174 bool create_layout = false;
1179 mdt_lock_handle_init(lhc);
1181 if (req_is_replay(mdt_info_req(info)))
1184 if (S_ISREG(lu_object_attr(&obj->mot_obj))) {
1185 if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) &&
1186 md_should_create(open_flags))
1187 create_layout = true;
1188 if (exp_connect_layout(info->mti_exp) && !create_layout &&
1189 ma->ma_need & MA_LOV)
1194 /* lease open, acquire write mode of open sem */
1195 down_write(&obj->mot_open_sem);
1197 /* Lease exists and ask for new lease */
1198 if (atomic_read(&obj->mot_lease_count) > 0) {
1199 /* only exclusive open is supported, so lease
1200 * are conflicted to each other */
1201 GOTO(out, rc = -EBUSY);
1204 /* Lease must be with open lock */
1205 if (!(open_flags & MDS_OPEN_LOCK)) {
1206 CERROR("Request lease for file:"DFID ", but open lock "
1207 "is missed, open_flags = "LPO64".\n",
1208 PFID(mdt_object_fid(obj)), open_flags);
1209 GOTO(out, rc = -EPROTO);
1212 /* XXX: only exclusive open is supported. */
1214 *ibits = MDS_INODELOCK_OPEN;
1216 /* never grant LCK_EX layout lock to client */
1218 } else { /* normal open */
1219 /* normal open holds read mode of open sem */
1220 down_read(&obj->mot_open_sem);
1222 if (open_flags & MDS_OPEN_LOCK) {
1223 if (open_flags & FMODE_WRITE)
1225 /* if file is released, we can't deny write because we must
1226 * restore (write) it to access it. */
1227 else if ((open_flags & MDS_FMODE_EXEC) &&
1228 !((ma->ma_valid & MA_HSM) &&
1229 (ma->ma_hsm.mh_flags & HS_RELEASED)))
1234 *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN;
1235 } else if (atomic_read(&obj->mot_lease_count) > 0) {
1236 if (open_flags & FMODE_WRITE)
1242 *ibits = MDS_INODELOCK_OPEN;
1245 lhc = &info->mti_lh[MDT_LH_LOCAL];
1247 CDEBUG(D_INODE, "normal open:"DFID" lease count: %d, lm: %d\n",
1248 PFID(mdt_object_fid(obj)),
1249 atomic_read(&obj->mot_open_count), lm);
1252 mdt_lock_reg_init(lhc, lm);
1254 /* one problem to return layout lock on open is that it may result
1255 * in too many layout locks cached on the client side. */
1256 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) {
1257 /* return lookup lock to validate inode at the client side,
1258 * this is pretty important otherwise mdt will return layout
1259 * lock for each open.
1260 * However this is a double-edged sword because changing
1261 * permission will revoke huge # of LOOKUP locks. */
1262 *ibits |= MDS_INODELOCK_LAYOUT | MDS_INODELOCK_LOOKUP;
1263 if (!mdt_object_lock_try(info, obj, lhc, *ibits,
1265 *ibits &= ~(MDS_INODELOCK_LAYOUT|MDS_INODELOCK_LOOKUP);
1267 rc = mdt_object_lock(info, obj, lhc, *ibits,
1270 } else if (*ibits != 0) {
1271 rc = mdt_object_lock(info, obj, lhc, *ibits, MDT_CROSS_LOCK);
1274 CDEBUG(D_INODE, "Requested bits lock:"DFID ", ibits = "LPX64
1275 ", open_flags = "LPO64", try_layout = %d, rc = %d\n",
1276 PFID(mdt_object_fid(obj)), *ibits, open_flags, try_layout, rc);
1278 /* will change layout, revoke layout locks by enqueuing EX lock. */
1279 if (rc == 0 && create_layout) {
1280 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
1282 CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID
1283 ", open_flags = "LPO64"\n",
1284 PFID(mdt_object_fid(obj)), open_flags);
1286 LASSERT(!try_layout);
1287 mdt_lock_handle_init(ll);
1288 mdt_lock_reg_init(ll, LCK_EX);
1289 rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT,
1292 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2);
1295 /* Check if there is any other open handles after acquiring
1296 * open lock. At this point, caching open handles have been revoked
1298 * XXX: Now only exclusive open is supported. Need to check the
1299 * type of open for generic lease support. */
1300 if (rc == 0 && acq_lease) {
1301 struct ptlrpc_request *req = mdt_info_req(info);
1302 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
1303 struct mdt_file_data *mfd;
1304 bool is_replay_or_resent;
1307 /* For lease: application can open a file and then apply lease,
1308 * @handle contains original open handle in that case.
1309 * In recovery, open REQ will be replayed and the lease REQ may
1310 * be resent that means the open handle is already stale, so we
1311 * need to fix it up here by finding new handle. */
1312 is_replay_or_resent = req_is_replay(req) ||
1313 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT;
1315 /* if the request is _not_ a replay request, rr_handle
1316 * may be used to hold an openhandle which is issuing the
1317 * lease request, so that this openhandle doesn't count. */
1318 mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle,
1319 is_replay_or_resent);
1323 CDEBUG(D_INODE, "acq_lease "DFID": openers: %d, want: %d\n",
1324 PFID(mdt_object_fid(obj)),
1325 atomic_read(&obj->mot_open_count), open_count);
1327 if (atomic_read(&obj->mot_open_count) > open_count)
1328 GOTO(out, rc = -EBUSY);
1336 static void mdt_object_open_unlock(struct mdt_thread_info *info,
1337 struct mdt_object *obj,
1338 struct mdt_lock_handle *lhc,
1339 __u64 ibits, int rc)
1341 __u64 open_flags = info->mti_spec.sp_cr_flags;
1342 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LOCAL];
1345 if (req_is_replay(mdt_info_req(info)))
1348 /* Release local lock - the lock put in MDT_LH_LOCAL will never
1349 * return to client side. */
1350 if (lustre_handle_is_used(&ll->mlh_reg_lh))
1351 mdt_object_unlock(info, obj, ll, 1);
1353 ll = &info->mti_lh[MDT_LH_LAYOUT];
1354 /* Release local layout lock, layout was created */
1355 if (lustre_handle_is_used(&ll->mlh_reg_lh)) {
1356 LASSERT(!(ibits & MDS_INODELOCK_LAYOUT));
1357 mdt_object_unlock(info, obj, ll, 1);
1360 if (open_flags & MDS_OPEN_LEASE)
1361 up_write(&obj->mot_open_sem);
1363 up_read(&obj->mot_open_sem);
1365 /* Cross-ref case, the lock should be returned to the client */
1366 if (ibits == 0 || rc == -EREMOTE)
1369 if (!(open_flags & MDS_OPEN_LOCK) && !(ibits & MDS_INODELOCK_LAYOUT)) {
1370 /* for the open request, the lock will only return to client
1371 * if open or layout lock is granted. */
1376 struct ldlm_reply *ldlm_rep;
1378 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1379 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1380 mdt_object_unlock(info, obj, lhc, 1);
1386 * Check release is permitted for the current HSM flags.
1388 static bool mdt_hsm_release_allow(const struct md_attr *ma)
1390 if (!(ma->ma_valid & MA_HSM))
1393 if (ma->ma_hsm.mh_flags & (HS_DIRTY|HS_NORELEASE|HS_LOST))
1396 if (!(ma->ma_hsm.mh_flags & HS_ARCHIVED))
1402 int mdt_open_by_fid_lock(struct mdt_thread_info *info, struct ldlm_reply *rep,
1403 struct mdt_lock_handle *lhc)
1405 const struct lu_env *env = info->mti_env;
1406 struct mdt_device *mdt = info->mti_mdt;
1407 __u64 flags = info->mti_spec.sp_cr_flags;
1408 struct mdt_reint_record *rr = &info->mti_rr;
1409 struct md_attr *ma = &info->mti_attr;
1410 struct mdt_object *parent= NULL;
1411 struct mdt_object *o;
1416 if (md_should_create(flags) && !(flags & MDS_OPEN_HAS_EA)) {
1417 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1418 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1419 if (IS_ERR(parent)) {
1420 CDEBUG(D_INODE, "Fail to find parent "DFID
1421 " for anonymous created %ld, try to"
1422 " use server-side parent.\n",
1423 PFID(rr->rr_fid1), PTR_ERR(parent));
1428 ma->ma_need |= MA_PFID;
1431 o = mdt_object_find(env, mdt, rr->rr_fid2);
1433 RETURN(rc = PTR_ERR(o));
1435 if (mdt_object_remote(o)) {
1436 CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n",
1437 mdt_obd_name(info->mti_mdt),
1439 GOTO(out, rc = -EREMOTE);
1440 } else if (!mdt_object_exists(o)) {
1441 mdt_set_disposition(info, rep,
1445 GOTO(out, rc = -ENOENT);
1448 mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1450 if (flags & MDS_OPEN_RELEASE)
1451 ma->ma_need |= MA_HSM;
1452 rc = mdt_attr_get_complex(info, o, ma);
1456 /* If a release request, check file flags are fine and ask for an
1457 * exclusive open access. */
1458 if (flags & MDS_OPEN_RELEASE && !mdt_hsm_release_allow(ma))
1459 GOTO(out, rc = -EPERM);
1461 rc = mdt_object_open_lock(info, o, lhc, &ibits);
1463 GOTO(out_unlock, rc);
1465 if (ma->ma_valid & MA_PFID) {
1466 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1467 if (IS_ERR(parent)) {
1468 CDEBUG(D_INODE, "Fail to find parent "DFID
1469 " for anonymous created %ld, try to"
1470 " use system default.\n",
1471 PFID(&ma->ma_pfid), PTR_ERR(parent));
1476 rc = mdt_finish_open(info, parent, o, flags, 0, rep);
1478 mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
1479 if (flags & MDS_OPEN_LOCK)
1480 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1481 if (flags & MDS_OPEN_LEASE)
1482 mdt_set_disposition(info, rep, DISP_OPEN_LEASE);
1484 GOTO(out_unlock, rc);
1487 mdt_object_open_unlock(info, o, lhc, ibits, rc);
1489 mdt_object_put(env, o);
1491 mdt_object_put(env, parent);
1495 int mdt_pin(struct mdt_thread_info* info)
1498 RETURN(err_serious(-EOPNOTSUPP));
1501 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1502 static int mdt_cross_open(struct mdt_thread_info *info,
1503 const struct lu_fid *parent_fid,
1504 const struct lu_fid *fid,
1505 struct ldlm_reply *rep, __u32 flags)
1507 struct md_attr *ma = &info->mti_attr;
1508 struct mdt_object *o;
1512 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1514 RETURN(rc = PTR_ERR(o));
1516 if (mdt_object_remote(o)) {
1517 /* Something is wrong here, the object is on another MDS! */
1518 CERROR("%s: "DFID" isn't on this server!: rc = %d\n",
1519 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1520 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1522 "Object isn't on this server! FLD error?\n");
1525 if (mdt_object_exists(o)) {
1526 /* Do permission check for cross-open. */
1527 rc = mo_permission(info->mti_env, NULL,
1528 mdt_object_child(o),
1529 NULL, flags | MDS_OPEN_CROSS);
1533 mdt_set_capainfo(info, 0, fid, BYPASS_CAPA);
1534 rc = mdt_attr_get_complex(info, o, ma);
1538 /* Do not create lov object if the fid is opened
1540 if (S_ISREG(ma->ma_attr.la_mode) &&
1541 !(ma->ma_valid & MA_LOV) && (flags & FMODE_WRITE) &&
1542 fid_is_obf(parent_fid))
1543 GOTO(out, rc = -EPERM);
1545 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1548 * Something is wrong here. lookup was positive but
1549 * there is no object!
1551 CERROR("%s: "DFID" doesn't exist!: rc = %d\n",
1552 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1557 mdt_object_put(info->mti_env, o);
1561 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1563 struct mdt_device *mdt = info->mti_mdt;
1564 struct ptlrpc_request *req = mdt_info_req(info);
1565 struct mdt_object *parent;
1566 struct mdt_object *child;
1567 struct mdt_lock_handle *lh;
1568 struct ldlm_reply *ldlm_rep;
1569 struct mdt_body *repbody;
1570 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1571 struct md_attr *ma = &info->mti_attr;
1572 __u64 create_flags = info->mti_spec.sp_cr_flags;
1574 struct mdt_reint_record *rr = &info->mti_rr;
1575 struct lu_name *lname;
1581 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1582 (obd_timeout + 1) / 4);
1584 mdt_counter_incr(req, LPROC_MDT_OPEN);
1585 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1587 ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
1588 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD,
1590 ma->ma_need = MA_INODE;
1591 if (ma->ma_lmm_size > 0)
1592 ma->ma_need |= MA_LOV;
1596 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1597 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1599 if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) {
1600 CERROR("file join is not supported anymore.\n");
1601 GOTO(out, result = err_serious(-EOPNOTSUPP));
1603 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1605 if ((create_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1606 info->mti_spec.u.sp_ea.eadata == NULL)
1607 GOTO(out, result = err_serious(-EINVAL));
1609 CDEBUG(D_INODE, "I am going to open "DFID"/(%s->"DFID") "
1610 "cr_flag="LPO64" mode=0%06o msg_flag=0x%x\n",
1611 PFID(rr->rr_fid1), rr->rr_name,
1612 PFID(rr->rr_fid2), create_flags,
1613 ma->ma_attr.la_mode, msg_flags);
1614 if (info->mti_cross_ref) {
1615 /* This is cross-ref open */
1616 mdt_set_disposition(info, ldlm_rep,
1617 (DISP_IT_EXECD | DISP_LOOKUP_EXECD |
1619 result = mdt_cross_open(info, rr->rr_fid2, rr->rr_fid1,
1620 ldlm_rep, create_flags);
1622 } else if (req_is_replay(req) ||
1623 (req->rq_export->exp_libclient && create_flags & MDS_OPEN_HAS_EA)) {
1624 /* This is a replay request or from liblustre with ea. */
1625 result = mdt_open_by_fid(info, ldlm_rep);
1627 if (result != -ENOENT) {
1628 if (req->rq_export->exp_libclient &&
1629 create_flags & MDS_OPEN_HAS_EA)
1630 GOTO(out, result = 0);
1633 /* We didn't find the correct object, so we need to re-create it
1634 * via a regular replay. */
1635 if (!(create_flags & MDS_OPEN_CREAT)) {
1636 DEBUG_REQ(D_ERROR, req,
1637 "OPEN & CREAT not in open replay/by_fid.");
1638 GOTO(out, result = -EFAULT);
1640 CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
1641 } else if ((rr->rr_namelen == 0 && create_flags & MDS_OPEN_LOCK) ||
1642 (create_flags & MDS_OPEN_BY_FID)) {
1643 result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
1644 /* If result is 0 then open by FID has found the file
1645 * and there is nothing left for us to do here. More
1646 * generally if it is anything other than -ENOENT or
1647 * -EREMOTE then we return that now. If -ENOENT and
1648 * MDS_OPEN_CREAT is set then we must create the file
1649 * below. If -EREMOTE then we need to return a LOOKUP
1650 * lock to the client, which we do below. Hence this
1651 * odd looking condition. See LU-2523. */
1652 if (!(result == -ENOENT && (create_flags & MDS_OPEN_CREAT)) &&
1656 if (unlikely(rr->rr_namelen == 0))
1657 GOTO(out, result = -EINVAL);
1659 CDEBUG(D_INFO, "No object(2), continue as regular open.\n");
1662 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1663 GOTO(out, result = err_serious(-ENOMEM));
1665 mdt_set_disposition(info, ldlm_rep,
1666 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1668 lh = &info->mti_lh[MDT_LH_PARENT];
1669 mdt_lock_pdo_init(lh, (create_flags & MDS_OPEN_CREAT) ?
1670 LCK_PW : LCK_PR, rr->rr_name, rr->rr_namelen);
1672 parent = mdt_object_find_lock(info, rr->rr_fid1, lh,
1673 MDS_INODELOCK_UPDATE);
1675 GOTO(out, result = PTR_ERR(parent));
1677 /* get and check version of parent */
1678 result = mdt_version_get_check(info, parent, 0);
1680 GOTO(out_parent, result);
1682 fid_zero(child_fid);
1684 lname = mdt_name(info->mti_env, (char *)rr->rr_name, rr->rr_namelen);
1685 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1686 lname, child_fid, &info->mti_spec);
1687 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1688 "looking for "DFID"/%s, result fid="DFID"\n",
1689 PFID(mdt_object_fid(parent)), rr->rr_name, PFID(child_fid));
1691 if (result != 0 && result != -ENOENT && result != -ESTALE)
1692 GOTO(out_parent, result);
1694 if (result == -ENOENT || result == -ESTALE) {
1695 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1696 if (result == -ESTALE) {
1698 * -ESTALE means the parent is a dead(unlinked) dir, so
1699 * it should return -ENOENT to in accordance with the
1700 * original mds implementaion.
1702 GOTO(out_parent, result = -ENOENT);
1704 if (!(create_flags & MDS_OPEN_CREAT))
1705 GOTO(out_parent, result);
1706 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
1707 GOTO(out_parent, result = -EROFS);
1708 *child_fid = *info->mti_rr.rr_fid2;
1709 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1711 /* In the function below, .hs_keycmp resolves to
1712 * lu_obj_hop_keycmp() */
1713 /* coverity[overrun-buffer-val] */
1714 child = mdt_object_new(info->mti_env, mdt, child_fid);
1717 * Check for O_EXCL is moved to the mdt_finish_open(), we need to
1718 * return FID back in that case.
1720 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1721 child = mdt_object_find(info->mti_env, mdt, child_fid);
1724 GOTO(out_parent, result = PTR_ERR(child));
1726 /** check version of child */
1727 rc = mdt_version_get_check(info, child, 1);
1729 GOTO(out_child, result = rc);
1731 mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
1732 if (result == -ENOENT) {
1733 /* Create under OBF and .lustre is not permitted */
1734 if (fid_is_obf(rr->rr_fid1) || fid_is_dot_lustre(rr->rr_fid1))
1735 GOTO(out_child, result = -EPERM);
1737 /* save versions in reply */
1738 mdt_version_get_save(info, parent, 0);
1739 mdt_version_get_save(info, child, 1);
1741 /* version of child will be changed */
1742 info->mti_mos = child;
1744 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1745 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1747 /* Let lower layers know what is lock mode on directory. */
1748 info->mti_spec.sp_cr_mode =
1749 mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
1752 * Do not perform lookup sanity check. We know that name does
1755 info->mti_spec.sp_cr_lookup = 0;
1756 info->mti_spec.sp_feat = &dt_directory_features;
1758 result = mdo_create(info->mti_env,
1759 mdt_object_child(parent),
1761 mdt_object_child(child),
1764 if (result == -ERESTART) {
1765 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1766 GOTO(out_child, result);
1769 /* XXX: we should call this once, see few lines below */
1771 result = mdt_attr_get_complex(info, child, ma);
1774 GOTO(out_child, result);
1779 * The object is on remote node, return its FID for remote open.
1781 if (mdt_object_remote(child)) {
1783 * Check if this lock already was sent to client and
1784 * this is resent case. For resent case do not take lock
1785 * again, use what is already granted.
1787 LASSERT(lhc != NULL);
1789 if (lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1790 struct ldlm_lock *lock;
1792 LASSERT(msg_flags & MSG_RESENT);
1794 lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
1796 CERROR("Invalid lock handle "LPX64"\n",
1797 lhc->mlh_reg_lh.cookie);
1800 LASSERT(fid_res_name_eq(mdt_object_fid(child),
1801 &lock->l_resource->lr_name));
1802 LDLM_LOCK_PUT(lock);
1805 mdt_lock_handle_init(lhc);
1806 mdt_lock_reg_init(lhc, LCK_PR);
1808 rc = mdt_object_lock(info, child, lhc,
1809 MDS_INODELOCK_LOOKUP,
1812 repbody->fid1 = *mdt_object_fid(child);
1813 repbody->valid |= (OBD_MD_FLID | OBD_MD_MDS);
1818 GOTO(out_child, result);
1820 if (mdt_object_exists(child)) {
1821 /* We have to get attr & LOV EA & HSM for this
1823 ma->ma_need |= MA_HSM;
1824 result = mdt_attr_get_complex(info, child, ma);
1826 /*object non-exist!!!*/
1832 LASSERT(!lustre_handle_is_used(&lhc->mlh_reg_lh));
1834 /* get openlock if this is not replay and if a client requested it */
1835 if (!req_is_replay(req)) {
1836 rc = mdt_object_open_lock(info, child, lhc, &ibits);
1838 GOTO(out_child_unlock, result = rc);
1839 else if (create_flags & MDS_OPEN_LOCK)
1840 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1843 /* Try to open it now. */
1844 rc = mdt_finish_open(info, parent, child, create_flags,
1848 /* openlock will be released if mdt_finish_open failed */
1849 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1851 if (created && create_flags & MDS_OPEN_VOLATILE) {
1852 CERROR("%s: cannot open volatile file "DFID", orphan "
1853 "file will be left in PENDING directory until "
1854 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1855 PFID(mdt_object_fid(child)), rc);
1856 GOTO(out_child_unlock, result);
1862 ma->ma_cookie_size = 0;
1863 rc = mdo_unlink(info->mti_env,
1864 mdt_object_child(parent),
1865 mdt_object_child(child),
1867 &info->mti_attr, 0);
1869 CERROR("%s: "DFID" cleanup of open: rc = %d\n",
1870 mdt_obd_name(info->mti_mdt),
1871 PFID(mdt_object_fid(child)), rc);
1872 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1877 mdt_object_open_unlock(info, child, lhc, ibits, result);
1879 mdt_object_put(info->mti_env, child);
1881 mdt_object_unlock_put(info, parent, lh, result || !created);
1884 lustre_msg_set_transno(req->rq_repmsg, 0);
1889 * Create an orphan object use local root.
1891 static struct mdt_object *mdt_orphan_open(struct mdt_thread_info *info,
1892 struct mdt_device *mdt,
1893 const struct lu_fid *fid,
1894 struct md_attr *attr, fmode_t fmode)
1896 const struct lu_env *env = info->mti_env;
1897 struct md_op_spec *spec = &info->mti_spec;
1898 struct lu_fid *local_root_fid = &info->mti_tmp_fid1;
1899 struct mdt_object *obj = NULL;
1900 struct mdt_object *local_root;
1901 static const char name[] = "i_am_nobody";
1902 struct lu_name *lname;
1903 struct lu_ucred *uc;
1904 cfs_cap_t uc_cap_save;
1908 rc = dt_root_get(env, mdt->mdt_bottom, local_root_fid);
1910 RETURN(ERR_PTR(rc));
1912 local_root = mdt_object_find(env, mdt, local_root_fid);
1913 if (IS_ERR(local_root))
1916 obj = mdt_object_new(env, mdt, fid);
1918 GOTO(out, rc = PTR_ERR(obj));
1920 spec->sp_cr_lookup = 0;
1921 spec->sp_feat = &dt_directory_features;
1922 spec->sp_cr_mode = MDL_MINMODE; /* no lock */
1923 spec->sp_cr_flags = MDS_OPEN_VOLATILE | fmode;
1924 if (attr->ma_valid & MA_LOV) {
1925 spec->u.sp_ea.eadata = attr->ma_lmm;
1926 spec->u.sp_ea.eadatalen = attr->ma_lmm_size;
1927 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1929 spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE;
1932 lname = mdt_name(env, (char *)name, sizeof(name) - 1);
1935 uc_cap_save = uc->uc_cap;
1936 uc->uc_cap |= 1 << CAP_DAC_OVERRIDE;
1937 rc = mdo_create(env, mdt_object_child(local_root), lname,
1938 mdt_object_child(obj), spec, attr);
1939 uc->uc_cap = uc_cap_save;
1941 CERROR("%s: cannot create volatile file "DFID": rc = %d\n",
1942 mdt_obd_name(mdt), PFID(fid), rc);
1946 rc = mo_open(env, mdt_object_child(obj), MDS_OPEN_CREATED);
1948 CERROR("%s: cannot open volatile file "DFID", orphan "
1949 "file will be left in PENDING directory until "
1950 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1957 mdt_object_put(env, obj);
1960 mdt_object_put(env, local_root);
1964 static int mdt_hsm_release(struct mdt_thread_info *info, struct mdt_object *o,
1967 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LAYOUT];
1968 struct close_data *data;
1969 struct ldlm_lock *lease;
1970 struct mdt_object *orphan;
1971 struct md_attr *orp_ma;
1978 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
1982 lease = ldlm_handle2lock(&data->cd_handle);
1986 /* try to hold open_sem so that nobody else can open the file */
1987 if (!down_write_trylock(&o->mot_open_sem)) {
1988 ldlm_lock_cancel(lease);
1989 GOTO(out_reprocess, rc = -EBUSY);
1992 /* Check if the lease open lease has already canceled */
1993 lock_res_and_lock(lease);
1994 lease_broken = ldlm_is_cancel(lease);
1995 unlock_res_and_lock(lease);
1997 LDLM_DEBUG(lease, DFID " lease broken? %d\n",
1998 PFID(mdt_object_fid(o)), lease_broken);
2000 /* Cancel server side lease. Client side counterpart should
2001 * have been cancelled. It's okay to cancel it now as we've
2002 * held mot_open_sem. */
2003 ldlm_lock_cancel(lease);
2005 if (lease_broken) /* don't perform release task */
2006 GOTO(out_unlock, rc = -ESTALE);
2008 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
2009 GOTO(out_unlock, rc = -EINVAL);
2011 /* ma_need was set before but it seems fine to change it in order to
2012 * avoid modifying the one from RPC */
2013 ma->ma_need = MA_HSM;
2014 rc = mdt_attr_get_complex(info, o, ma);
2016 GOTO(out_unlock, rc);
2018 if (!mdt_hsm_release_allow(ma))
2019 GOTO(out_unlock, rc = -EPERM);
2021 /* already released? */
2022 if (ma->ma_hsm.mh_flags & HS_RELEASED)
2023 GOTO(out_unlock, rc = 0);
2025 /* Compare on-disk and packed data_version */
2026 if (data->cd_data_version != ma->ma_hsm.mh_arch_ver) {
2027 CDEBUG(D_HSM, DFID" data_version mismatches: packed="LPU64
2028 " and on-disk="LPU64"\n", PFID(mdt_object_fid(o)),
2029 data->cd_data_version, ma->ma_hsm.mh_arch_ver);
2030 GOTO(out_unlock, rc = -EPERM);
2033 ma->ma_valid = MA_INODE;
2034 ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME | LA_SIZE;
2035 rc = mo_attr_set(info->mti_env, mdt_object_child(o), ma);
2037 GOTO(out_unlock, rc);
2039 ma->ma_need = MA_INODE | MA_LOV;
2040 rc = mdt_attr_get_complex(info, o, ma);
2042 GOTO(out_unlock, rc);
2044 if (!(ma->ma_valid & MA_LOV)) {
2045 /* Even empty file are released */
2046 memset(ma->ma_lmm, 0, sizeof(*ma->ma_lmm));
2047 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEF);
2048 ma->ma_lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
2049 ma->ma_lmm->lmm_stripe_size = cpu_to_le32(LOV_MIN_STRIPE_SIZE);
2050 ma->ma_lmm_size = sizeof(*ma->ma_lmm);
2052 /* Magic must be LOV_MAGIC_Vx_DEF otherwise LOD will interpret
2053 * ma_lmm as lov_user_md, then it will be confused by union of
2054 * layout_gen and stripe_offset. */
2055 if (le32_to_cpu(ma->ma_lmm->lmm_magic) == LOV_MAGIC_V1)
2056 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEF);
2057 else if (le32_to_cpu(ma->ma_lmm->lmm_magic) == LOV_MAGIC_V3)
2058 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V3_DEF);
2060 GOTO(out_unlock, rc = -EINVAL);
2063 /* Set file as released */
2064 ma->ma_lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
2066 /* Hopefully it's not used in this call path */
2067 orp_ma = &info->mti_u.som.attr;
2068 orp_ma->ma_attr.la_mode = S_IFREG | S_IWUSR;
2069 orp_ma->ma_attr.la_uid = ma->ma_attr.la_uid;
2070 orp_ma->ma_attr.la_gid = ma->ma_attr.la_gid;
2071 orp_ma->ma_attr.la_valid = LA_MODE | LA_UID | LA_GID;
2072 orp_ma->ma_lmm = ma->ma_lmm;
2073 orp_ma->ma_lmm_size = ma->ma_lmm_size;
2074 orp_ma->ma_valid = MA_INODE | MA_LOV;
2075 orphan = mdt_orphan_open(info, info->mti_mdt, &data->cd_fid, orp_ma,
2077 if (IS_ERR(orphan)) {
2078 CERROR("%s: cannot open orphan file "DFID": rc = %ld\n",
2079 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid),
2081 GOTO(out_unlock, rc = PTR_ERR(orphan));
2084 /* Set up HSM attribute for orphan object */
2085 CLASSERT(sizeof(struct hsm_attrs) <= sizeof(info->mti_xattr_buf));
2086 buf = &info->mti_buf;
2087 buf->lb_buf = info->mti_xattr_buf;
2088 buf->lb_len = sizeof(struct hsm_attrs);
2089 ma->ma_hsm.mh_flags |= HS_RELEASED;
2090 lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
2091 ma->ma_hsm.mh_flags &= ~HS_RELEASED;
2093 mdt_lock_reg_init(lh, LCK_EX);
2094 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_LAYOUT |
2095 MDS_INODELOCK_XATTR, MDT_LOCAL_LOCK);
2097 GOTO(out_close, rc);
2099 rc = mo_xattr_set(info->mti_env, mdt_object_child(orphan), buf,
2103 /* Swap layout with orphan object */
2104 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o),
2105 mdt_object_child(orphan),
2106 SWAP_LAYOUTS_MDS_HSM);
2108 /* Release exclusive LL */
2109 mdt_object_unlock(info, o, lh, 1);
2114 /* Close orphan object anyway */
2115 rc2 = mo_close(info->mti_env, mdt_object_child(orphan), orp_ma,
2118 CERROR("%s: error closing volatile file "DFID": rc = %d\n",
2119 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid), rc2);
2120 LU_OBJECT_DEBUG(D_HSM, info->mti_env, &orphan->mot_obj,
2122 mdt_object_put(info->mti_env, orphan);
2125 up_write(&o->mot_open_sem);
2127 if (rc == 0) { /* already released */
2128 struct mdt_body *repbody;
2129 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2130 LASSERT(repbody != NULL);
2131 repbody->valid |= OBD_MD_FLRELEASED;
2135 ldlm_reprocess_all(lease->l_resource);
2136 LDLM_LOCK_PUT(lease);
2144 #define MFD_CLOSED(mode) (((mode) & ~(MDS_FMODE_EPOCH | MDS_FMODE_SOM | \
2145 MDS_FMODE_TRUNC)) == MDS_FMODE_CLOSED)
2147 static int mdt_mfd_closed(struct mdt_file_data *mfd)
2149 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_mode));
2152 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
2154 struct mdt_object *o = mfd->mfd_object;
2155 struct md_object *next = mdt_object_child(o);
2156 struct md_attr *ma = &info->mti_attr;
2157 int ret = MDT_IOEPOCH_CLOSED;
2162 mode = mfd->mfd_mode;
2164 if (ma->ma_attr_flags & MDS_HSM_RELEASE) {
2165 rc = mdt_hsm_release(info, o, ma);
2167 CDEBUG(D_HSM, "%s: File " DFID " release failed: %d\n",
2168 mdt_obd_name(info->mti_mdt),
2169 PFID(mdt_object_fid(o)), rc);
2170 /* continue to close even error occurred. */
2174 if ((mode & FMODE_WRITE) || (mode & MDS_FMODE_TRUNC)) {
2176 ret = mdt_ioepoch_close(info, o);
2177 } else if (mode & MDS_FMODE_EXEC) {
2179 } else if (mode & MDS_FMODE_EPOCH) {
2180 ret = mdt_ioepoch_close(info, o);
2181 } else if (mode & MDS_FMODE_SOM) {
2182 ret = mdt_som_au_close(info, o);
2185 /* Update atime on close only. */
2186 if ((mode & MDS_FMODE_EXEC || mode & FMODE_READ || mode & FMODE_WRITE)
2187 && (ma->ma_valid & MA_INODE) && (ma->ma_attr.la_valid & LA_ATIME)) {
2188 /* Set the atime only. */
2189 ma->ma_valid = MA_INODE;
2190 ma->ma_attr.la_valid = LA_ATIME;
2191 rc = mo_attr_set(info->mti_env, next, ma);
2194 /* If file data is modified, add the dirty flag. */
2195 if (ma->ma_attr_flags & MDS_DATA_MODIFIED)
2196 rc = mdt_add_dirty_flag(info, o, ma);
2198 ma->ma_need |= MA_INODE;
2199 ma->ma_valid &= ~MA_INODE;
2201 if (!MFD_CLOSED(mode))
2202 rc = mo_close(info->mti_env, next, ma, mode);
2204 if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) {
2205 struct mdt_export_data *med;
2207 /* The IOepoch is still opened or SOM update is needed.
2208 * Put mfd back into the list. */
2209 LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
2210 mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ?
2211 MDS_FMODE_EPOCH : MDS_FMODE_SOM);
2213 LASSERT(mdt_info_req(info));
2214 med = &mdt_info_req(info)->rq_export->exp_mdt_data;
2215 spin_lock(&med->med_open_lock);
2216 cfs_list_add(&mfd->mfd_list, &med->med_open_head);
2217 class_handle_hash_back(&mfd->mfd_handle);
2218 spin_unlock(&med->med_open_lock);
2220 if (ret == MDT_IOEPOCH_OPENED) {
2224 CDEBUG(D_INODE, "Size-on-MDS attribute update is "
2225 "needed on "DFID"\n", PFID(mdt_object_fid(o)));
2228 /* adjust open and lease count */
2229 if (mode & MDS_OPEN_LEASE) {
2230 LASSERT(atomic_read(&o->mot_lease_count) > 0);
2231 atomic_dec(&o->mot_lease_count);
2233 LASSERT(atomic_read(&o->mot_open_count) > 0);
2234 atomic_dec(&o->mot_open_count);
2237 mdt_object_put(info->mti_env, o);
2240 RETURN(rc ? rc : ret);
2243 int mdt_close(struct mdt_thread_info *info)
2245 struct mdt_export_data *med;
2246 struct mdt_file_data *mfd;
2247 struct mdt_object *o;
2248 struct md_attr *ma = &info->mti_attr;
2249 struct mdt_body *repbody = NULL;
2250 struct ptlrpc_request *req = mdt_info_req(info);
2254 mdt_counter_incr(req, LPROC_MDT_CLOSE);
2255 /* Close may come with the Size-on-MDS update. Unpack it. */
2256 rc = mdt_close_unpack(info);
2258 RETURN(err_serious(rc));
2260 LASSERT(info->mti_ioepoch);
2262 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
2263 info->mti_mdt->mdt_max_mdsize);
2264 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
2265 info->mti_mdt->mdt_max_cookiesize);
2266 rc = req_capsule_server_pack(info->mti_pill);
2267 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2268 mdt_client_compatibility(info);
2270 mdt_fix_reply(info);
2271 mdt_exit_ucred(info);
2272 RETURN(lustre_msg_get_status(req->rq_repmsg));
2275 /* Continue to close handle even if we can not pack reply */
2277 repbody = req_capsule_server_get(info->mti_pill,
2279 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
2281 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
2284 ma->ma_cookie = req_capsule_server_get(info->mti_pill,
2286 ma->ma_cookie_size = req_capsule_get_size(info->mti_pill,
2289 ma->ma_need = MA_INODE | MA_LOV | MA_COOKIE;
2290 repbody->eadatasize = 0;
2291 repbody->aclsize = 0;
2293 rc = err_serious(rc);
2296 med = &req->rq_export->exp_mdt_data;
2297 spin_lock(&med->med_open_lock);
2298 mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
2299 req_is_replay(req));
2300 if (mdt_mfd_closed(mfd)) {
2301 spin_unlock(&med->med_open_lock);
2302 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
2303 ": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1),
2304 info->mti_ioepoch->handle.cookie);
2305 /** not serious error since bug 3633 */
2308 class_handle_unhash(&mfd->mfd_handle);
2309 cfs_list_del_init(&mfd->mfd_list);
2310 spin_unlock(&med->med_open_lock);
2312 /* Do not lose object before last unlink. */
2313 o = mfd->mfd_object;
2314 mdt_object_get(info->mti_env, o);
2315 ret = mdt_mfd_close(info, mfd);
2316 if (repbody != NULL)
2317 rc = mdt_handle_last_unlink(info, o, ma);
2318 mdt_empty_transno(info, rc);
2319 mdt_object_put(info->mti_env, o);
2321 if (repbody != NULL) {
2322 mdt_client_compatibility(info);
2323 rc = mdt_fix_reply(info);
2326 mdt_exit_ucred(info);
2327 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
2328 RETURN(err_serious(-ENOMEM));
2330 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
2331 OBD_FAIL_MDS_CLOSE_NET_REP))
2332 info->mti_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
2333 RETURN(rc ? rc : ret);
2337 * DONE_WRITING rpc handler.
2339 * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()),
2340 * only those DONE_WRITING rpc will be replayed which really wrote smth on disk,
2341 * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just
2342 * skip attributes and reconstruct the reply here.
2344 int mdt_done_writing(struct mdt_thread_info *info)
2346 struct ptlrpc_request *req = mdt_info_req(info);
2347 struct mdt_body *repbody = NULL;
2348 struct mdt_export_data *med;
2349 struct mdt_file_data *mfd;
2353 rc = req_capsule_server_pack(info->mti_pill);
2355 RETURN(err_serious(rc));
2357 repbody = req_capsule_server_get(info->mti_pill,
2359 repbody->eadatasize = 0;
2360 repbody->aclsize = 0;
2362 /* Done Writing may come with the Size-on-MDS update. Unpack it. */
2363 rc = mdt_close_unpack(info);
2365 RETURN(err_serious(rc));
2367 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2368 mdt_exit_ucred(info);
2369 RETURN(lustre_msg_get_status(req->rq_repmsg));
2372 med = &info->mti_exp->exp_mdt_data;
2373 spin_lock(&med->med_open_lock);
2374 mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
2375 req_is_replay(req));
2377 spin_unlock(&med->med_open_lock);
2378 CDEBUG(D_INODE, "no handle for done write: fid = "DFID
2379 ": cookie = "LPX64" ioepoch = "LPU64"\n",
2380 PFID(info->mti_rr.rr_fid1),
2381 info->mti_ioepoch->handle.cookie,
2382 info->mti_ioepoch->ioepoch);
2383 /* If this is a replay, reconstruct the transno. */
2384 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
2385 rc = info->mti_ioepoch->flags & MF_SOM_AU ?
2387 mdt_empty_transno(info, rc);
2390 GOTO(error_ucred, rc);
2393 LASSERT(mfd->mfd_mode == MDS_FMODE_EPOCH ||
2394 mfd->mfd_mode == MDS_FMODE_TRUNC);
2395 class_handle_unhash(&mfd->mfd_handle);
2396 cfs_list_del_init(&mfd->mfd_list);
2397 spin_unlock(&med->med_open_lock);
2399 /* Set EPOCH CLOSE flag if not set by client. */
2400 info->mti_ioepoch->flags |= MF_EPOCH_CLOSE;
2401 info->mti_attr.ma_valid = 0;
2403 info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
2404 OBD_ALLOC_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
2405 if (info->mti_attr.ma_lmm == NULL)
2406 GOTO(error_ucred, rc = -ENOMEM);
2408 rc = mdt_mfd_close(info, mfd);
2410 OBD_FREE_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
2411 mdt_empty_transno(info, rc);
2413 mdt_exit_ucred(info);