4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdt/mdt_recovery.c
38 * Lustre Metadata Target (mdt) recovery-related methods
40 * Author: Huang Hua <huanghua@clusterfs.com>
41 * Author: Pershin Mike <tappro@clusterfs.com>
44 #define DEBUG_SUBSYSTEM S_MDS
46 #include "mdt_internal.h"
48 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len)
51 struct mdt_thread_info *mti;
53 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
60 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
61 const void *area, ssize_t len)
64 struct mdt_thread_info *mti;
66 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
69 buf->lb_buf = (void *)area;
74 void mdt_trans_stop(const struct lu_env *env,
75 struct mdt_device *mdt, struct thandle *th)
77 dt_trans_stop(env, mdt->mdt_bottom, th);
80 static int mdt_clients_data_init(const struct lu_env *env,
81 struct mdt_device *mdt,
82 unsigned long last_size)
84 struct lr_server_data *lsd = &mdt->mdt_lut.lut_lsd;
85 struct lsd_client_data *lcd;
86 struct obd_device *obd = mdt2obd_dev(mdt);
96 /* When we do a clean MDS shutdown, we save the last_transno into
97 * the header. If we find clients with higher last_transno values
98 * then those clients may need recovery done. */
99 LASSERT(cfs_atomic_read(&obd->obd_req_replay_clients) == 0);
100 for (cl_idx = 0, off = lsd->lsd_client_start;
101 off < last_size; cl_idx++) {
103 struct obd_export *exp;
104 struct mdt_thread_info *mti;
106 off = lsd->lsd_client_start +
107 cl_idx * lsd->lsd_client_size;
109 rc = lut_client_data_read(env, &mdt->mdt_lut, lcd, &off, cl_idx);
111 CERROR("error reading MDS %s idx %d, off %llu: rc %d\n",
112 LAST_RCVD, cl_idx, off, rc);
114 break; /* read error shouldn't cause startup to fail */
117 if (lcd->lcd_uuid[0] == '\0') {
118 CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
123 last_transno = lcd_last_transno(lcd);
125 /* These exports are cleaned up by mdt_obd_disconnect(), so
126 * they need to be set up like real exports as
127 * mdt_obd_connect() does.
129 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
130 " srv lr: "LPU64" lx: "LPU64"\n", lcd->lcd_uuid, cl_idx,
131 last_transno, lsd->lsd_last_transno,
134 exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
136 if (PTR_ERR(exp) == -EALREADY) {
137 /* export already exists, zero out this one */
138 CERROR("Duplicate export %s!\n", lcd->lcd_uuid);
141 GOTO(err_client, rc = PTR_ERR(exp));
144 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
145 LASSERT(mti != NULL);
147 /* copy on-disk lcd to the export */
148 *exp->exp_target_data.ted_lcd = *lcd;
149 rc = lut_client_add(env, exp, cl_idx);
150 /* can't fail existing */
151 LASSERTF(rc == 0, "rc = %d\n", rc);
152 /* VBR: set export last committed version */
153 exp->exp_last_committed = last_transno;
154 cfs_spin_lock(&exp->exp_lock);
155 exp->exp_connecting = 0;
156 exp->exp_in_recovery = 0;
157 cfs_spin_unlock(&exp->exp_lock);
158 obd->obd_max_recoverable_clients++;
159 class_export_put(exp);
161 CDEBUG(D_OTHER, "client at idx %d has last_transno="LPU64"\n",
162 cl_idx, last_transno);
163 /* protect __u64 value update */
164 cfs_spin_lock(&mdt->mdt_lut.lut_translock);
165 mdt->mdt_lut.lut_last_transno = max(last_transno,
166 mdt->mdt_lut.lut_last_transno);
167 cfs_spin_unlock(&mdt->mdt_lut.lut_translock);
175 static int mdt_server_data_init(const struct lu_env *env,
176 struct mdt_device *mdt,
177 struct lustre_sb_info *lsi)
179 struct lr_server_data *lsd = &mdt->mdt_lut.lut_lsd;
180 struct lsd_client_data *lcd = NULL;
181 struct obd_device *obd = mdt2obd_dev(mdt);
182 struct mdt_thread_info *mti;
183 struct dt_object *obj;
185 unsigned long last_rcvd_size;
190 /* ensure padding in the struct is the correct size */
191 CLASSERT(offsetof(struct lr_server_data, lsd_padding) +
192 sizeof(lsd->lsd_padding) == LR_SERVER_SIZE);
193 CLASSERT(offsetof(struct lsd_client_data, lcd_padding) +
194 sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
196 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
197 LASSERT(mti != NULL);
198 la = &mti->mti_attr.ma_attr;
200 obj = mdt->mdt_lut.lut_last_rcvd;
201 rc = dt_attr_get(env, obj, la, BYPASS_CAPA);
205 last_rcvd_size = (unsigned long)la->la_size;
207 if (last_rcvd_size == 0) {
208 LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
210 memcpy(lsd->lsd_uuid, obd->obd_uuid.uuid,
211 sizeof(lsd->lsd_uuid));
212 lsd->lsd_last_transno = 0;
213 lsd->lsd_mount_count = 0;
214 lsd->lsd_server_size = LR_SERVER_SIZE;
215 lsd->lsd_client_start = LR_CLIENT_START;
216 lsd->lsd_client_size = LR_CLIENT_SIZE;
217 lsd->lsd_feature_compat = OBD_COMPAT_MDT;
218 lsd->lsd_feature_rocompat = OBD_ROCOMPAT_LOVOBJID;
219 lsd->lsd_feature_incompat = OBD_INCOMPAT_MDT |
220 OBD_INCOMPAT_COMMON_LR |
221 OBD_INCOMPAT_MULTI_OI;
223 LCONSOLE_WARN("%s: used disk, loading\n", obd->obd_name);
224 rc = lut_server_data_read(env, &mdt->mdt_lut);
226 CERROR("error reading MDS %s: rc %d\n", LAST_RCVD, rc);
229 if (strcmp(lsd->lsd_uuid, obd->obd_uuid.uuid) != 0) {
230 LCONSOLE_ERROR_MSG(0x157, "Trying to start OBD %s using"
231 "the wrong disk %s. Were the /dev/ "
232 "assignments rearranged?\n",
233 obd->obd_uuid.uuid, lsd->lsd_uuid);
234 GOTO(out, rc = -EINVAL);
236 lsd->lsd_feature_compat |= OBD_COMPAT_MDT;
237 lsd->lsd_feature_incompat |= OBD_INCOMPAT_MDT |
238 OBD_INCOMPAT_COMMON_LR;
240 mount_count = lsd->lsd_mount_count;
242 if (lsd->lsd_feature_incompat & ~MDT_INCOMPAT_SUPP) {
243 CERROR("%s: unsupported incompat filesystem feature(s) %x\n",
245 lsd->lsd_feature_incompat & ~MDT_INCOMPAT_SUPP);
246 GOTO(out, rc = -EINVAL);
248 if (lsd->lsd_feature_rocompat & ~MDT_ROCOMPAT_SUPP) {
249 CERROR("%s: unsupported read-only filesystem feature(s) %x\n",
251 lsd->lsd_feature_rocompat & ~MDT_ROCOMPAT_SUPP);
252 /* XXX: Do something like remount filesystem read-only */
253 GOTO(out, rc = -EINVAL);
255 /** Interop: evict all clients at first boot with 1.8 last_rcvd */
256 if (!(lsd->lsd_feature_compat & OBD_COMPAT_20)) {
257 if (last_rcvd_size > lsd->lsd_client_start) {
258 LCONSOLE_WARN("Mounting %s at first time on 1.8 FS, "
259 "remove all clients for interop needs\n",
261 rc = lut_truncate_last_rcvd(env, &mdt->mdt_lut,
262 lsd->lsd_client_start);
265 last_rcvd_size = lsd->lsd_client_start;
267 /** set 2.0 flag to upgrade/downgrade between 1.8 and 2.0 */
268 lsd->lsd_feature_compat |= OBD_COMPAT_20;
271 if (lsi->lsi_flags & LDD_F_IAM_DIR)
272 lsd->lsd_feature_incompat |= OBD_INCOMPAT_IAM_DIR;
274 lsd->lsd_feature_incompat |= OBD_INCOMPAT_FID;
276 cfs_spin_lock(&mdt->mdt_lut.lut_translock);
277 mdt->mdt_lut.lut_last_transno = lsd->lsd_last_transno;
278 cfs_spin_unlock(&mdt->mdt_lut.lut_translock);
280 CDEBUG(D_INODE, "========BEGIN DUMPING LAST_RCVD========\n");
281 CDEBUG(D_INODE, "%s: server last_transno: "LPU64"\n",
282 obd->obd_name, mdt->mdt_lut.lut_last_transno);
283 CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
284 obd->obd_name, mount_count + 1);
285 CDEBUG(D_INODE, "%s: server data size: %u\n",
286 obd->obd_name, lsd->lsd_server_size);
287 CDEBUG(D_INODE, "%s: per-client data start: %u\n",
288 obd->obd_name, lsd->lsd_client_start);
289 CDEBUG(D_INODE, "%s: per-client data size: %u\n",
290 obd->obd_name, lsd->lsd_client_size);
291 CDEBUG(D_INODE, "%s: last_rcvd size: %lu\n",
292 obd->obd_name, last_rcvd_size);
293 CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
294 last_rcvd_size <= lsd->lsd_client_start ? 0 :
295 (last_rcvd_size - lsd->lsd_client_start) /
296 lsd->lsd_client_size);
297 CDEBUG(D_INODE, "========END DUMPING LAST_RCVD========\n");
299 if (!lsd->lsd_server_size || !lsd->lsd_client_start ||
300 !lsd->lsd_client_size) {
301 CERROR("Bad last_rcvd contents!\n");
302 GOTO(out, rc = -EINVAL);
305 rc = mdt_clients_data_init(env, mdt, last_rcvd_size);
307 GOTO(err_client, rc);
309 cfs_spin_lock(&mdt->mdt_lut.lut_translock);
310 /* obd_last_committed is used for compatibility
311 * with other lustre recovery code */
312 obd->obd_last_committed = mdt->mdt_lut.lut_last_transno;
313 cfs_spin_unlock(&mdt->mdt_lut.lut_translock);
315 obd->u.obt.obt_mount_count = mount_count + 1;
316 obd->u.obt.obt_instance = (__u32)obd->u.obt.obt_mount_count;
317 lsd->lsd_mount_count = obd->u.obt.obt_mount_count;
319 /* save it, so mount count and last_transno is current */
320 rc = lut_server_data_update(env, &mdt->mdt_lut, 0);
322 GOTO(err_client, rc);
327 class_disconnect_exports(obd);
333 * last_rcvd & last_committed update callbacks
335 static int mdt_last_rcvd_update(struct mdt_thread_info *mti,
338 struct mdt_device *mdt = mti->mti_mdt;
339 struct ptlrpc_request *req = mdt_info_req(mti);
340 struct tg_export_data *ted;
341 struct lsd_client_data *lcd;
344 __s32 rc = th->th_result;
348 LASSERT(req->rq_export);
350 ted = &req->rq_export->exp_target_data;
353 cfs_mutex_lock(&ted->ted_lcd_lock);
355 /* if the export has already been disconnected, we have no last_rcvd slot,
356 * update server data with latest transno then */
358 cfs_mutex_unlock(&ted->ted_lcd_lock);
359 CWARN("commit transaction for disconnected client %s: rc %d\n",
360 req->rq_export->exp_client_uuid.uuid, rc);
361 err = lut_server_data_write(mti->mti_env, &mdt->mdt_lut, th);
365 off = ted->ted_lr_off;
366 LASSERT(ergo(mti->mti_transno == 0, rc != 0));
367 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
368 lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
369 if (mti->mti_transno != 0) {
370 if (lcd->lcd_last_close_transno > mti->mti_transno) {
371 CERROR("Trying to overwrite bigger transno:"
372 "on-disk: "LPU64", new: "LPU64" "
373 "replay: %d. see LU-617.\n",
374 lcd->lcd_last_close_transno,
375 mti->mti_transno, req_is_replay(req));
376 if (req_is_replay(req)) {
377 cfs_spin_lock(&req->rq_export->exp_lock);
378 req->rq_export->exp_vbr_failed = 1;
379 cfs_spin_unlock(&req->rq_export->exp_lock);
381 cfs_mutex_unlock(&ted->ted_lcd_lock);
382 RETURN(req_is_replay(req) ? -EOVERFLOW : 0);
384 lcd->lcd_last_close_transno = mti->mti_transno;
386 lcd->lcd_last_close_xid = req->rq_xid;
387 lcd->lcd_last_close_result = rc;
389 /* VBR: save versions in last_rcvd for reconstruct. */
390 __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
392 lcd->lcd_pre_versions[0] = pre_versions[0];
393 lcd->lcd_pre_versions[1] = pre_versions[1];
394 lcd->lcd_pre_versions[2] = pre_versions[2];
395 lcd->lcd_pre_versions[3] = pre_versions[3];
397 if (mti->mti_transno != 0) {
398 if (lcd->lcd_last_transno > mti->mti_transno) {
399 CERROR("Trying to overwrite bigger transno:"
400 "on-disk: "LPU64", new: "LPU64" "
401 "replay: %d. see LU-617.\n",
402 lcd->lcd_last_transno,
403 mti->mti_transno, req_is_replay(req));
404 if (req_is_replay(req)) {
405 cfs_spin_lock(&req->rq_export->exp_lock);
406 req->rq_export->exp_vbr_failed = 1;
407 cfs_spin_unlock(&req->rq_export->exp_lock);
409 cfs_mutex_unlock(&ted->ted_lcd_lock);
410 RETURN(req_is_replay(req) ? -EOVERFLOW : 0);
412 lcd->lcd_last_transno = mti->mti_transno;
414 lcd->lcd_last_xid = req->rq_xid;
415 lcd->lcd_last_result = rc;
416 /*XXX: save intent_disposition in mdt_thread_info?
417 * also there is bug - intent_dispostion is __u64,
418 * see struct ldlm_reply->lock_policy_res1; */
419 lcd->lcd_last_data = mti->mti_opdata;
422 if ((mti->mti_exp->exp_connect_flags & OBD_CONNECT_LIGHTWEIGHT) != 0) {
423 /* Although lightweight (LW) connections have no slot in
424 * last_rcvd, we still want to maintain the in-memory
425 * lsd_client_data structure in order to properly handle reply
427 struct lu_target *tg = &mdt->mdt_lut;
430 cfs_mutex_unlock(&ted->ted_lcd_lock);
433 /* All operations performed by LW clients are synchronous and
434 * we store the committed transno in the last_rcvd header */
435 cfs_spin_lock(&tg->lut_translock);
436 if (mti->mti_transno > tg->lut_lsd.lsd_last_transno) {
437 tg->lut_lsd.lsd_last_transno = mti->mti_transno;
440 cfs_spin_unlock(&tg->lut_translock);
443 err = lut_server_data_write(mti->mti_env, tg, th);
444 } else if (off <= 0) {
445 CERROR("%s: client idx %d has offset %lld\n",
446 mdt2obd_dev(mdt)->obd_name, ted->ted_lr_idx, off);
447 cfs_mutex_unlock(&ted->ted_lcd_lock);
450 err = lut_client_data_write(mti->mti_env, &mdt->mdt_lut, lcd,
452 cfs_mutex_unlock(&ted->ted_lcd_lock);
457 extern struct lu_context_key mdt_thread_key;
459 /* add credits for last_rcvd update */
460 static int mdt_txn_start_cb(const struct lu_env *env,
461 struct thandle *th, void *cookie)
463 struct mdt_device *mdt = cookie;
464 struct mdt_thread_info *mti;
468 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
470 LASSERT(mdt->mdt_lut.lut_last_rcvd);
471 if (mti->mti_exp == NULL)
474 rc = dt_declare_record_write(env, mdt->mdt_lut.lut_last_rcvd,
475 sizeof(struct lsd_client_data),
476 mti->mti_exp->exp_target_data.ted_lr_off,
481 rc = dt_declare_record_write(env, mdt->mdt_lut.lut_last_rcvd,
482 sizeof(struct lr_server_data), 0, th);
486 if (mti->mti_mos != NULL)
487 rc = dt_declare_version_set(env, mdt_obj2dt(mti->mti_mos), th);
492 /* Update last_rcvd records with latests transaction data */
493 static int mdt_txn_stop_cb(const struct lu_env *env,
494 struct thandle *txn, void *cookie)
496 struct mdt_device *mdt = cookie;
497 struct mdt_thread_info *mti;
498 struct ptlrpc_request *req;
500 mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
501 req = mdt_info_req(mti);
503 if (mti->mti_mdt == NULL || req == NULL || mti->mti_no_need_trans) {
504 mti->mti_no_need_trans = 0;
508 if (mti->mti_has_trans) {
509 /* XXX: currently there are allowed cases, but the wrong cases
510 * are also possible, so better check is needed here */
511 CDEBUG(D_INFO, "More than one transaction "LPU64"\n",
516 mti->mti_has_trans = 1;
517 cfs_spin_lock(&mdt->mdt_lut.lut_translock);
518 if (txn->th_result != 0) {
519 if (mti->mti_transno != 0) {
520 CERROR("Replay transno "LPU64" failed: rc %d\n",
521 mti->mti_transno, txn->th_result);
523 } else if (mti->mti_transno == 0) {
524 mti->mti_transno = ++ mdt->mdt_lut.lut_last_transno;
526 /* should be replay */
527 if (mti->mti_transno > mdt->mdt_lut.lut_last_transno)
528 mdt->mdt_lut.lut_last_transno = mti->mti_transno;
530 cfs_spin_unlock(&mdt->mdt_lut.lut_translock);
531 /* sometimes the reply message has not been successfully packed */
532 LASSERT(req != NULL && req->rq_repmsg != NULL);
534 /** VBR: set new versions */
535 if (txn->th_result == 0 && mti->mti_mos != NULL) {
536 dt_version_set(env, mdt_obj2dt(mti->mti_mos),
537 mti->mti_transno, txn);
541 /* filling reply data */
542 CDEBUG(D_INODE, "transno = "LPU64", last_committed = "LPU64"\n",
543 mti->mti_transno, req->rq_export->exp_obd->obd_last_committed);
545 req->rq_transno = mti->mti_transno;
546 lustre_msg_set_transno(req->rq_repmsg, mti->mti_transno);
547 /* if can't add callback, do sync write */
548 txn->th_sync |= !!lut_last_commit_cb_add(txn, &mdt->mdt_lut,
551 return mdt_last_rcvd_update(mti, txn);
554 int mdt_fs_setup(const struct lu_env *env, struct mdt_device *mdt,
555 struct obd_device *obd,
556 struct lustre_sb_info *lsi)
561 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FS_SETUP))
564 /* prepare transactions callbacks */
565 mdt->mdt_txn_cb.dtc_txn_start = mdt_txn_start_cb;
566 mdt->mdt_txn_cb.dtc_txn_stop = mdt_txn_stop_cb;
567 mdt->mdt_txn_cb.dtc_txn_commit = NULL;
568 mdt->mdt_txn_cb.dtc_cookie = mdt;
569 mdt->mdt_txn_cb.dtc_tag = LCT_MD_THREAD;
570 CFS_INIT_LIST_HEAD(&mdt->mdt_txn_cb.dtc_linkage);
572 dt_txn_callback_add(mdt->mdt_bottom, &mdt->mdt_txn_cb);
574 rc = mdt_server_data_init(env, mdt, lsi);
579 void mdt_fs_cleanup(const struct lu_env *env, struct mdt_device *mdt)
583 /* Remove transaction callback */
584 dt_txn_callback_del(mdt->mdt_bottom, &mdt->mdt_txn_cb);
586 lu_object_put(env, &mdt->mdt_ck_obj->do_lu);
587 mdt->mdt_ck_obj = NULL;
591 /* reconstruction code */
592 static void mdt_steal_ack_locks(struct ptlrpc_request *req)
594 struct ptlrpc_service_part *svcpt;
595 struct obd_export *exp = req->rq_export;
597 struct ptlrpc_reply_state *oldrep;
600 /* CAVEAT EMPTOR: spinlock order */
601 cfs_spin_lock(&exp->exp_lock);
602 cfs_list_for_each (tmp, &exp->exp_outstanding_replies) {
603 oldrep = cfs_list_entry(tmp, struct ptlrpc_reply_state,
606 if (oldrep->rs_xid != req->rq_xid)
609 if (oldrep->rs_opc != lustre_msg_get_opc(req->rq_reqmsg))
610 CERROR ("Resent req xid "LPU64" has mismatched opc: "
611 "new %d old %d\n", req->rq_xid,
612 lustre_msg_get_opc(req->rq_reqmsg),
615 svcpt = oldrep->rs_svcpt;
616 cfs_spin_lock(&svcpt->scp_rep_lock);
618 cfs_list_del_init (&oldrep->rs_exp_list);
620 CWARN("Stealing %d locks from rs %p x"LPD64".t"LPD64
622 oldrep->rs_nlocks, oldrep,
623 oldrep->rs_xid, oldrep->rs_transno, oldrep->rs_opc,
624 libcfs_nid2str(exp->exp_connection->c_peer.nid));
626 for (i = 0; i < oldrep->rs_nlocks; i++)
627 ptlrpc_save_lock(req, &oldrep->rs_locks[i],
628 oldrep->rs_modes[i], 0);
629 oldrep->rs_nlocks = 0;
631 DEBUG_REQ(D_HA, req, "stole locks for");
632 cfs_spin_lock(&oldrep->rs_lock);
633 ptlrpc_schedule_difficult_reply (oldrep);
634 cfs_spin_unlock(&oldrep->rs_lock);
636 cfs_spin_unlock(&svcpt->scp_rep_lock);
639 cfs_spin_unlock(&exp->exp_lock);
643 * VBR: restore versions
645 void mdt_vbr_reconstruct(struct ptlrpc_request *req,
646 struct lsd_client_data *lcd)
648 __u64 pre_versions[4] = {0};
649 pre_versions[0] = lcd->lcd_pre_versions[0];
650 pre_versions[1] = lcd->lcd_pre_versions[1];
651 pre_versions[2] = lcd->lcd_pre_versions[2];
652 pre_versions[3] = lcd->lcd_pre_versions[3];
653 lustre_msg_set_versions(req->rq_repmsg, pre_versions);
656 void mdt_req_from_lcd(struct ptlrpc_request *req,
657 struct lsd_client_data *lcd)
659 DEBUG_REQ(D_HA, req, "restoring transno "LPD64"/status %d",
660 lcd->lcd_last_transno, lcd->lcd_last_result);
662 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
663 lustre_msg_get_opc(req->rq_repmsg) == MDS_DONE_WRITING) {
664 req->rq_transno = lcd->lcd_last_close_transno;
665 req->rq_status = lcd->lcd_last_close_result;
667 req->rq_transno = lcd->lcd_last_transno;
668 req->rq_status = lcd->lcd_last_result;
669 mdt_vbr_reconstruct(req, lcd);
671 if (req->rq_status != 0)
673 lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
674 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
675 DEBUG_REQ(D_RPCTRACE, req, "restoring transno "LPD64"/status %d",
676 req->rq_transno, req->rq_status);
678 mdt_steal_ack_locks(req);
681 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
682 struct mdt_lock_handle *lhc)
684 struct ptlrpc_request *req = mdt_info_req(mti);
685 struct tg_export_data *ted = &req->rq_export->exp_target_data;
687 return mdt_req_from_lcd(req, ted->ted_lcd);
690 static void mdt_reconstruct_create(struct mdt_thread_info *mti,
691 struct mdt_lock_handle *lhc)
693 struct ptlrpc_request *req = mdt_info_req(mti);
694 struct obd_export *exp = req->rq_export;
695 struct tg_export_data *ted = &exp->exp_target_data;
696 struct mdt_device *mdt = mti->mti_mdt;
697 struct mdt_object *child;
698 struct mdt_body *body;
701 mdt_req_from_lcd(req, ted->ted_lcd);
705 /* if no error, so child was created with requested fid */
706 child = mdt_object_find(mti->mti_env, mdt, mti->mti_rr.rr_fid2);
709 LCONSOLE_WARN("Child "DFID" lookup error %d."
710 " Evicting client %s with export %s.\n",
711 PFID(mdt_object_fid(child)), rc,
712 obd_uuid2str(&exp->exp_client_uuid),
713 obd_export_nid2str(exp));
714 mdt_export_evict(exp);
719 body = req_capsule_server_get(mti->mti_pill, &RMF_MDT_BODY);
720 mti->mti_attr.ma_need = MA_INODE;
721 mti->mti_attr.ma_valid = 0;
722 rc = mdt_attr_get_complex(mti, child, &mti->mti_attr);
723 if (rc == -EREMOTE) {
724 /* object was created on remote server */
726 body->valid |= OBD_MD_MDS;
728 mdt_pack_attr2body(mti, body, &mti->mti_attr.ma_attr,
729 mdt_object_fid(child));
730 mdt_object_put(mti->mti_env, child);
733 static void mdt_reconstruct_setattr(struct mdt_thread_info *mti,
734 struct mdt_lock_handle *lhc)
736 struct ptlrpc_request *req = mdt_info_req(mti);
737 struct obd_export *exp = req->rq_export;
738 struct mdt_export_data *med = &exp->exp_mdt_data;
739 struct mdt_device *mdt = mti->mti_mdt;
740 struct mdt_object *obj;
741 struct mdt_body *body;
743 mdt_req_from_lcd(req, med->med_ted.ted_lcd);
747 body = req_capsule_server_get(mti->mti_pill, &RMF_MDT_BODY);
748 obj = mdt_object_find(mti->mti_env, mdt, mti->mti_rr.rr_fid1);
750 int rc = PTR_ERR(obj);
751 LCONSOLE_WARN(""DFID" lookup error %d."
752 " Evicting client %s with export %s.\n",
753 PFID(mdt_object_fid(obj)), rc,
754 obd_uuid2str(&exp->exp_client_uuid),
755 obd_export_nid2str(exp));
756 mdt_export_evict(exp);
760 mti->mti_attr.ma_need = MA_INODE;
761 mti->mti_attr.ma_valid = 0;
762 mdt_attr_get_complex(mti, obj, &mti->mti_attr);
763 mdt_pack_attr2body(mti, body, &mti->mti_attr.ma_attr,
764 mdt_object_fid(obj));
765 if (mti->mti_ioepoch && (mti->mti_ioepoch->flags & MF_EPOCH_OPEN)) {
766 struct mdt_file_data *mfd;
767 struct mdt_body *repbody;
769 repbody = req_capsule_server_get(mti->mti_pill, &RMF_MDT_BODY);
770 repbody->ioepoch = obj->mot_ioepoch;
771 cfs_spin_lock(&med->med_open_lock);
772 cfs_list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
773 if (mfd->mfd_xid == req->rq_xid)
776 LASSERT(&mfd->mfd_list != &med->med_open_head);
777 cfs_spin_unlock(&med->med_open_lock);
778 repbody->handle.cookie = mfd->mfd_handle.h_cookie;
781 mdt_object_put(mti->mti_env, obj);
784 typedef void (*mdt_reconstructor)(struct mdt_thread_info *mti,
785 struct mdt_lock_handle *lhc);
787 static mdt_reconstructor reconstructors[REINT_MAX] = {
788 [REINT_SETATTR] = mdt_reconstruct_setattr,
789 [REINT_CREATE] = mdt_reconstruct_create,
790 [REINT_LINK] = mdt_reconstruct_generic,
791 [REINT_UNLINK] = mdt_reconstruct_generic,
792 [REINT_RENAME] = mdt_reconstruct_generic,
793 [REINT_OPEN] = mdt_reconstruct_open,
794 [REINT_SETXATTR] = mdt_reconstruct_generic
797 void mdt_reconstruct(struct mdt_thread_info *mti,
798 struct mdt_lock_handle *lhc)
801 reconstructors[mti->mti_rr.rr_opcode](mti, lhc);