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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mgs/mgs_llog.c
34 * Lustre Management Server (mgs) config llog creation
36 * Author: Nathan Rutman <nathan@clusterfs.com>
37 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
38 * Author: Mikhail Pershin <tappro@whamcloud.com>
41 #define DEBUG_SUBSYSTEM S_MGS
42 #define D_MGS D_CONFIG
45 #include <uapi/linux/lustre/lustre_ioctl.h>
46 #include <uapi/linux/lustre/lustre_param.h>
47 #include <lustre_sec.h>
48 #include <lustre_quota.h>
49 #include <lustre_sec.h>
51 #include "mgs_internal.h"
53 /********************** Class functions ********************/
56 * Find all logs in CONFIG directory and link then into list.
58 * \param[in] env pointer to the thread context
59 * \param[in] mgs pointer to the mgs device
60 * \param[out] log_list the list to hold the found llog name entry
62 * \retval 0 for success
63 * \retval negative error number on failure
65 int class_dentry_readdir(const struct lu_env *env, struct mgs_device *mgs,
66 struct list_head *log_list)
68 struct dt_object *dir = mgs->mgs_configs_dir;
69 const struct dt_it_ops *iops;
71 struct mgs_direntry *de;
74 size_t suffix_len = sizeof(".bak") - 1;
76 INIT_LIST_HEAD(log_list);
79 LASSERT(dir->do_index_ops);
81 iops = &dir->do_index_ops->dio_it;
82 it = iops->init(env, dir, LUDA_64BITHASH);
86 rc = iops->load(env, it, 0);
92 key = (void *)iops->key(env, it);
94 CERROR("%s: key failed when listing %s: rc = %d\n",
95 mgs->mgs_obd->obd_name, MOUNT_CONFIGS_DIR,
99 key_sz = iops->key_size(env, it);
102 /* filter out "." and ".." entries */
106 if (key_sz == 2 && key[1] == '.')
110 /* filter out ".bak" files */
111 if (key_sz >= suffix_len &&
112 !memcmp(".bak", key + key_sz - suffix_len, suffix_len)) {
113 CDEBUG(D_MGS, "Skipping backup file %.*s\n",
118 de = mgs_direntry_alloc(key_sz + 1);
124 memcpy(de->mde_name, key, key_sz);
125 de->mde_name[key_sz] = 0;
127 list_add(&de->mde_list, log_list);
130 rc = iops->next(env, it);
140 struct mgs_direntry *n;
142 CERROR("%s: key failed when listing %s: rc = %d\n",
143 mgs->mgs_obd->obd_name, MOUNT_CONFIGS_DIR, rc);
145 list_for_each_entry_safe(de, n, log_list, mde_list) {
146 list_del_init(&de->mde_list);
147 mgs_direntry_free(de);
154 /******************** DB functions *********************/
156 static inline int name_create(char **newname, char *prefix, char *suffix)
159 OBD_ALLOC(*newname, strlen(prefix) + strlen(suffix) + 1);
162 sprintf(*newname, "%s%s", prefix, suffix);
166 static inline void name_destroy(char **name)
169 OBD_FREE(*name, strlen(*name) + 1);
173 struct mgs_fsdb_handler_data
179 /* from the (client) config log, figure out:
180 1. which ost's/mdt's are configured (by index)
181 2. what the last config step is
182 3. COMPAT_18 osc name
184 /* It might be better to have a separate db file, instead of parsing the info
185 out of the client log. This is slow and potentially error-prone. */
186 static int mgs_fsdb_handler(const struct lu_env *env, struct llog_handle *llh,
187 struct llog_rec_hdr *rec, void *data)
189 struct mgs_fsdb_handler_data *d = data;
190 struct fs_db *fsdb = d->fsdb;
191 int cfg_len = rec->lrh_len;
192 char *cfg_buf = (char*) (rec + 1);
193 struct lustre_cfg *lcfg;
198 if (rec->lrh_type != OBD_CFG_REC) {
199 CERROR("unhandled lrh_type: %#x\n", rec->lrh_type);
203 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
205 CERROR("Insane cfg\n");
209 lcfg = (struct lustre_cfg *)cfg_buf;
211 CDEBUG(D_INFO, "cmd %x %s %s\n", lcfg->lcfg_command,
212 lustre_cfg_string(lcfg, 0), lustre_cfg_string(lcfg, 1));
214 /* Figure out ost indicies */
215 /* lov_modify_tgts add 0:lov1 1:ost1_UUID 2(index):0 3(gen):1 */
216 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD ||
217 lcfg->lcfg_command == LCFG_LOV_DEL_OBD) {
218 rc = kstrtouint(lustre_cfg_string(lcfg, 2), 10, &index);
222 CDEBUG(D_MGS, "OST index for %s is %u (%s)\n",
223 lustre_cfg_string(lcfg, 1), index,
224 lustre_cfg_string(lcfg, 2));
225 set_bit(index, fsdb->fsdb_ost_index_map);
228 /* Figure out mdt indicies */
229 /* attach 0:MDC_uml1_mdsA_MNT_client 1:mdc 2:1d834_MNT_client_03f */
230 if ((lcfg->lcfg_command == LCFG_ATTACH) &&
231 (strcmp(lustre_cfg_string(lcfg, 1), LUSTRE_MDC_NAME) == 0)) {
232 rc = server_name2index(lustre_cfg_string(lcfg, 0),
234 if (rc != LDD_F_SV_TYPE_MDT) {
235 CWARN("Unparsable MDC name %s, assuming index 0\n",
236 lustre_cfg_string(lcfg, 0));
240 CDEBUG(D_MGS, "MDT index is %u\n", index);
241 if (!test_bit(index, fsdb->fsdb_mdt_index_map)) {
242 set_bit(index, fsdb->fsdb_mdt_index_map);
243 fsdb->fsdb_mdt_count++;
248 * figure out the old config. fsdb_gen = 0 means old log
249 * It is obsoleted and not supported anymore
251 if (fsdb->fsdb_gen == 0) {
252 CERROR("Old config format is not supported\n");
257 * compat to 1.8, check osc name used by MDT0 to OSTs, bz18548.
259 if (!test_bit(FSDB_OSCNAME18, &fsdb->fsdb_flags) &&
260 lcfg->lcfg_command == LCFG_ATTACH &&
261 strcmp(lustre_cfg_string(lcfg, 1), LUSTRE_OSC_NAME) == 0) {
262 if (OBD_OCD_VERSION_MAJOR(d->ver) == 1 &&
263 OBD_OCD_VERSION_MINOR(d->ver) <= 8) {
264 CWARN("MDT using 1.8 OSC name scheme\n");
265 set_bit(FSDB_OSCNAME18, &fsdb->fsdb_flags);
269 if (lcfg->lcfg_command == LCFG_MARKER) {
270 struct cfg_marker *marker;
271 marker = lustre_cfg_buf(lcfg, 1);
273 d->ver = marker->cm_vers;
275 /* Keep track of the latest marker step */
276 fsdb->fsdb_gen = max(fsdb->fsdb_gen, marker->cm_step);
282 /* fsdb->fsdb_mutex is already held in mgs_find_or_make_fsdb*/
283 static int mgs_get_fsdb_from_llog(const struct lu_env *env,
284 struct mgs_device *mgs,
288 struct llog_handle *loghandle;
289 struct llog_ctxt *ctxt;
290 struct mgs_fsdb_handler_data d = {
297 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
298 LASSERT(ctxt != NULL);
299 rc = name_create(&logname, fsdb->fsdb_name, "-client");
302 rc = llog_open_create(env, ctxt, &loghandle, NULL, logname);
306 rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN, NULL);
310 if (llog_get_size(loghandle) <= 1)
311 set_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags);
313 rc = llog_process(env, loghandle, mgs_fsdb_handler, (void *)&d, NULL);
314 CDEBUG(D_INFO, "get_db = %d\n", rc);
316 llog_close(env, loghandle);
318 name_destroy(&logname);
325 static void mgs_free_fsdb_srpc(struct fs_db *fsdb)
327 struct mgs_tgt_srpc_conf *tgtconf;
329 /* free target-specific rules */
330 while (fsdb->fsdb_srpc_tgt) {
331 tgtconf = fsdb->fsdb_srpc_tgt;
332 fsdb->fsdb_srpc_tgt = tgtconf->mtsc_next;
334 LASSERT(tgtconf->mtsc_tgt);
336 sptlrpc_rule_set_free(&tgtconf->mtsc_rset);
337 OBD_FREE(tgtconf->mtsc_tgt, strlen(tgtconf->mtsc_tgt) + 1);
338 OBD_FREE_PTR(tgtconf);
341 /* free general rules */
342 sptlrpc_rule_set_free(&fsdb->fsdb_srpc_gen);
345 static void mgs_unlink_fsdb(struct mgs_device *mgs, struct fs_db *fsdb)
347 mutex_lock(&mgs->mgs_mutex);
348 if (likely(!list_empty(&fsdb->fsdb_list))) {
349 LASSERTF(atomic_read(&fsdb->fsdb_ref) >= 2,
350 "Invalid ref %d on %s\n",
351 atomic_read(&fsdb->fsdb_ref),
354 list_del_init(&fsdb->fsdb_list);
355 /* Drop the reference on the list.*/
356 mgs_put_fsdb(mgs, fsdb);
358 mutex_unlock(&mgs->mgs_mutex);
361 /* The caller must hold mgs->mgs_mutex. */
362 static inline struct fs_db *
363 mgs_find_fsdb_noref(struct mgs_device *mgs, const char *fsname)
366 struct list_head *tmp;
368 list_for_each(tmp, &mgs->mgs_fs_db_list) {
369 fsdb = list_entry(tmp, struct fs_db, fsdb_list);
370 if (strcmp(fsdb->fsdb_name, fsname) == 0)
377 /* The caller must hold mgs->mgs_mutex. */
378 static void mgs_remove_fsdb_by_name(struct mgs_device *mgs, const char *name)
382 fsdb = mgs_find_fsdb_noref(mgs, name);
384 list_del_init(&fsdb->fsdb_list);
385 /* Drop the reference on the list.*/
386 mgs_put_fsdb(mgs, fsdb);
390 /* The caller must hold mgs->mgs_mutex. */
391 struct fs_db *mgs_find_fsdb(struct mgs_device *mgs, const char *fsname)
395 fsdb = mgs_find_fsdb_noref(mgs, fsname);
397 atomic_inc(&fsdb->fsdb_ref);
402 /* The caller must hold mgs->mgs_mutex. */
403 static struct fs_db *mgs_new_fsdb(const struct lu_env *env,
404 struct mgs_device *mgs, char *fsname)
410 if (strlen(fsname) >= sizeof(fsdb->fsdb_name)) {
411 CERROR("fsname %s is too long\n", fsname);
413 RETURN(ERR_PTR(-EINVAL));
418 RETURN(ERR_PTR(-ENOMEM));
420 strncpy(fsdb->fsdb_name, fsname, sizeof(fsdb->fsdb_name));
421 mutex_init(&fsdb->fsdb_mutex);
422 INIT_LIST_HEAD(&fsdb->fsdb_list);
423 set_bit(FSDB_UDESC, &fsdb->fsdb_flags);
425 INIT_LIST_HEAD(&fsdb->fsdb_clients);
426 atomic_set(&fsdb->fsdb_notify_phase, 0);
427 init_waitqueue_head(&fsdb->fsdb_notify_waitq);
428 init_completion(&fsdb->fsdb_notify_comp);
430 if (strcmp(fsname, MGSSELF_NAME) == 0) {
431 set_bit(FSDB_MGS_SELF, &fsdb->fsdb_flags);
432 fsdb->fsdb_mgs = mgs;
433 if (logname_is_barrier(fsname))
436 OBD_ALLOC(fsdb->fsdb_mdt_index_map, INDEX_MAP_SIZE);
437 if (!fsdb->fsdb_mdt_index_map) {
438 CERROR("No memory for MDT index maps\n");
440 GOTO(err, rc = -ENOMEM);
443 OBD_ALLOC(fsdb->fsdb_ost_index_map, INDEX_MAP_SIZE);
444 if (!fsdb->fsdb_ost_index_map) {
445 CERROR("No memory for OST index maps\n");
447 GOTO(err, rc = -ENOMEM);
450 if (logname_is_barrier(fsname))
453 rc = name_create(&fsdb->fsdb_clilov, fsname, "-clilov");
457 rc = name_create(&fsdb->fsdb_clilmv, fsname, "-clilmv");
461 /* initialise data for NID table */
462 mgs_ir_init_fs(env, mgs, fsdb);
463 lproc_mgs_add_live(mgs, fsdb);
466 if (!test_bit(FSDB_MGS_SELF, &fsdb->fsdb_flags) &&
467 strcmp(PARAMS_FILENAME, fsname) != 0) {
468 /* populate the db from the client llog */
469 rc = mgs_get_fsdb_from_llog(env, mgs, fsdb);
471 CERROR("Can't get db from client log %d\n", rc);
477 /* populate srpc rules from params llog */
478 rc = mgs_get_fsdb_srpc_from_llog(env, mgs, fsdb);
480 CERROR("Can't get db from params log %d\n", rc);
486 /* One ref is for the fsdb on the list.
487 * The other ref is for the caller. */
488 atomic_set(&fsdb->fsdb_ref, 2);
489 list_add(&fsdb->fsdb_list, &mgs->mgs_fs_db_list);
494 atomic_set(&fsdb->fsdb_ref, 1);
495 mgs_put_fsdb(mgs, fsdb);
500 static void mgs_free_fsdb(struct mgs_device *mgs, struct fs_db *fsdb)
502 LASSERT(list_empty(&fsdb->fsdb_list));
504 lproc_mgs_del_live(mgs, fsdb);
506 /* deinitialize fsr */
508 mgs_ir_fini_fs(mgs, fsdb);
510 if (fsdb->fsdb_ost_index_map)
511 OBD_FREE(fsdb->fsdb_ost_index_map, INDEX_MAP_SIZE);
512 if (fsdb->fsdb_mdt_index_map)
513 OBD_FREE(fsdb->fsdb_mdt_index_map, INDEX_MAP_SIZE);
514 name_destroy(&fsdb->fsdb_clilov);
515 name_destroy(&fsdb->fsdb_clilmv);
516 mgs_free_fsdb_srpc(fsdb);
520 void mgs_put_fsdb(struct mgs_device *mgs, struct fs_db *fsdb)
522 if (atomic_dec_and_test(&fsdb->fsdb_ref))
523 mgs_free_fsdb(mgs, fsdb);
526 int mgs_init_fsdb_list(struct mgs_device *mgs)
528 INIT_LIST_HEAD(&mgs->mgs_fs_db_list);
532 int mgs_cleanup_fsdb_list(struct mgs_device *mgs)
535 struct list_head *tmp, *tmp2;
537 mutex_lock(&mgs->mgs_mutex);
538 list_for_each_safe(tmp, tmp2, &mgs->mgs_fs_db_list) {
539 fsdb = list_entry(tmp, struct fs_db, fsdb_list);
540 list_del_init(&fsdb->fsdb_list);
541 mgs_put_fsdb(mgs, fsdb);
543 mutex_unlock(&mgs->mgs_mutex);
547 /* The caller must hold mgs->mgs_mutex. */
548 int mgs_find_or_make_fsdb_nolock(const struct lu_env *env,
549 struct mgs_device *mgs,
550 char *name, struct fs_db **dbh)
556 fsdb = mgs_find_fsdb(mgs, name);
558 fsdb = mgs_new_fsdb(env, mgs, name);
562 CDEBUG(D_MGS, "Created new db: rc = %d\n", rc);
571 int mgs_find_or_make_fsdb(const struct lu_env *env, struct mgs_device *mgs,
572 char *name, struct fs_db **dbh)
577 mutex_lock(&mgs->mgs_mutex);
578 rc = mgs_find_or_make_fsdb_nolock(env, mgs, name, dbh);
579 mutex_unlock(&mgs->mgs_mutex);
586 -1= empty client log */
587 int mgs_check_index(const struct lu_env *env,
588 struct mgs_device *mgs,
589 struct mgs_target_info *mti)
596 LASSERT(!(mti->mti_flags & LDD_F_NEED_INDEX));
598 rc = mgs_find_or_make_fsdb(env, mgs, mti->mti_fsname, &fsdb);
600 CERROR("Can't get db for %s\n", mti->mti_fsname);
604 if (test_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags))
607 if (mti->mti_flags & LDD_F_SV_TYPE_OST)
608 imap = fsdb->fsdb_ost_index_map;
609 else if (mti->mti_flags & LDD_F_SV_TYPE_MDT)
610 imap = fsdb->fsdb_mdt_index_map;
612 GOTO(out, rc = -EINVAL);
614 if (test_bit(mti->mti_stripe_index, imap))
620 mgs_put_fsdb(mgs, fsdb);
624 static __inline__ int next_index(void *index_map, int map_len)
627 for (i = 0; i < map_len * 8; i++)
628 if (!test_bit(i, index_map)) {
631 CERROR("max index %d exceeded.\n", i);
635 /* Make the mdt/ost server obd name based on the filesystem name */
636 static bool server_make_name(u32 flags, u16 index, const char *fs,
637 char *name_buf, size_t name_buf_size)
639 bool invalid_flag = false;
641 if (flags & (LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST)) {
642 if (!(flags & LDD_F_SV_ALL))
643 snprintf(name_buf, name_buf_size, "%.8s%c%s%04x", fs,
644 (flags & LDD_F_VIRGIN) ? ':' :
645 ((flags & LDD_F_WRITECONF) ? '=' : '-'),
646 (flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",
648 } else if (flags & LDD_F_SV_TYPE_MGS) {
649 snprintf(name_buf, name_buf_size, "MGS");
651 CERROR("unknown server type %#x\n", flags);
658 0 newly marked as in use
660 +EALREADY for update of an old index */
661 static int mgs_set_index(const struct lu_env *env,
662 struct mgs_device *mgs,
663 struct mgs_target_info *mti)
670 rc = mgs_find_or_make_fsdb(env, mgs, mti->mti_fsname, &fsdb);
672 CERROR("Can't get db for %s\n", mti->mti_fsname);
676 mutex_lock(&fsdb->fsdb_mutex);
677 if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
678 imap = fsdb->fsdb_ost_index_map;
679 } else if (mti->mti_flags & LDD_F_SV_TYPE_MDT) {
680 imap = fsdb->fsdb_mdt_index_map;
682 GOTO(out_up, rc = -EINVAL);
685 if (mti->mti_flags & LDD_F_NEED_INDEX) {
686 rc = next_index(imap, INDEX_MAP_SIZE);
688 GOTO(out_up, rc = -ERANGE);
689 mti->mti_stripe_index = rc;
692 /* the last index(0xffff) is reserved for default value. */
693 if (mti->mti_stripe_index >= INDEX_MAP_SIZE * 8 - 1) {
694 LCONSOLE_ERROR_MSG(0x13f, "Server %s requested index %u, "
695 "but index must be less than %u.\n",
696 mti->mti_svname, mti->mti_stripe_index,
697 INDEX_MAP_SIZE * 8 - 1);
698 GOTO(out_up, rc = -ERANGE);
701 if (test_bit(mti->mti_stripe_index, imap)) {
702 if ((mti->mti_flags & LDD_F_VIRGIN) &&
703 !(mti->mti_flags & LDD_F_WRITECONF)) {
704 LCONSOLE_ERROR_MSG(0x140, "Server %s requested index "
705 "%d, but that index is already in "
706 "use. Use --writeconf to force\n",
708 mti->mti_stripe_index);
709 GOTO(out_up, rc = -EADDRINUSE);
711 CDEBUG(D_MGS, "Server %s updating index %d\n",
712 mti->mti_svname, mti->mti_stripe_index);
713 GOTO(out_up, rc = EALREADY);
716 set_bit(mti->mti_stripe_index, imap);
717 if (mti->mti_flags & LDD_F_SV_TYPE_MDT)
718 fsdb->fsdb_mdt_count++;
721 set_bit(mti->mti_stripe_index, imap);
722 clear_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags);
723 if (server_make_name(mti->mti_flags & ~(LDD_F_VIRGIN | LDD_F_WRITECONF),
724 mti->mti_stripe_index, mti->mti_fsname,
725 mti->mti_svname, sizeof(mti->mti_svname))) {
726 CERROR("unknown server type %#x\n", mti->mti_flags);
727 GOTO(out_up, rc = -EINVAL);
730 CDEBUG(D_MGS, "Set index for %s to %d\n", mti->mti_svname,
731 mti->mti_stripe_index);
733 GOTO(out_up, rc = 0);
736 mutex_unlock(&fsdb->fsdb_mutex);
737 mgs_put_fsdb(mgs, fsdb);
741 struct mgs_modify_lookup {
742 struct cfg_marker mml_marker;
746 static int mgs_check_record_match(const struct lu_env *env,
747 struct llog_handle *llh,
748 struct llog_rec_hdr *rec, void *data)
750 struct cfg_marker *mc_marker = data;
751 struct cfg_marker *marker;
752 struct lustre_cfg *lcfg = REC_DATA(rec);
753 int cfg_len = REC_DATA_LEN(rec);
758 if (rec->lrh_type != OBD_CFG_REC) {
759 CDEBUG(D_ERROR, "Unhandled lrh_type: %#x\n", rec->lrh_type);
763 rc = lustre_cfg_sanity_check(lcfg, cfg_len);
765 CDEBUG(D_ERROR, "Insane cfg\n");
769 /* We only care about markers */
770 if (lcfg->lcfg_command != LCFG_MARKER)
773 marker = lustre_cfg_buf(lcfg, 1);
775 if (marker->cm_flags & CM_SKIP)
778 if ((strcmp(mc_marker->cm_comment, marker->cm_comment) == 0) &&
779 (strcmp(mc_marker->cm_tgtname, marker->cm_tgtname) == 0)) {
780 /* Found a non-skipped marker match */
781 CDEBUG(D_MGS, "Matched rec %u marker %d flag %x %s %s\n",
782 rec->lrh_index, marker->cm_step,
783 marker->cm_flags, marker->cm_tgtname,
785 rc = LLOG_PROC_BREAK;
792 * Check an existing config log record with matching comment and device
794 * 0 - checked successfully,
795 * LLOG_PROC_BREAK - record matches
798 static int mgs_check_marker(const struct lu_env *env, struct mgs_device *mgs,
799 struct fs_db *fsdb, struct mgs_target_info *mti,
800 char *logname, char *devname, char *comment)
802 struct llog_handle *loghandle;
803 struct llog_ctxt *ctxt;
804 struct cfg_marker *mc_marker;
809 LASSERT(mutex_is_locked(&fsdb->fsdb_mutex));
810 CDEBUG(D_MGS, "mgs check %s/%s/%s\n", logname, devname, comment);
812 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
813 LASSERT(ctxt != NULL);
814 rc = llog_open(env, ctxt, &loghandle, NULL, logname, LLOG_OPEN_EXISTS);
821 rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN, NULL);
825 if (llog_get_size(loghandle) <= 1)
826 GOTO(out_close, rc = 0);
828 OBD_ALLOC_PTR(mc_marker);
830 GOTO(out_close, rc = -ENOMEM);
831 if (strlcpy(mc_marker->cm_comment, comment,
832 sizeof(mc_marker->cm_comment)) >=
833 sizeof(mc_marker->cm_comment))
834 GOTO(out_free, rc = -E2BIG);
835 if (strlcpy(mc_marker->cm_tgtname, devname,
836 sizeof(mc_marker->cm_tgtname)) >=
837 sizeof(mc_marker->cm_tgtname))
838 GOTO(out_free, rc = -E2BIG);
840 rc = llog_process(env, loghandle, mgs_check_record_match,
841 (void *)mc_marker, NULL);
844 OBD_FREE_PTR(mc_marker);
847 llog_close(env, loghandle);
849 if (rc && rc != LLOG_PROC_BREAK)
850 CDEBUG(D_ERROR, "%s: mgs check %s/%s failed: rc = %d\n",
851 mgs->mgs_obd->obd_name, mti->mti_svname, comment, rc);
856 static int mgs_modify_handler(const struct lu_env *env,
857 struct llog_handle *llh,
858 struct llog_rec_hdr *rec, void *data)
860 struct mgs_modify_lookup *mml = data;
861 struct cfg_marker *marker;
862 struct lustre_cfg *lcfg = REC_DATA(rec);
863 int cfg_len = REC_DATA_LEN(rec);
867 if (rec->lrh_type != OBD_CFG_REC) {
868 CERROR("unhandled lrh_type: %#x\n", rec->lrh_type);
872 rc = lustre_cfg_sanity_check(lcfg, cfg_len);
874 CERROR("Insane cfg\n");
878 /* We only care about markers */
879 if (lcfg->lcfg_command != LCFG_MARKER)
882 marker = lustre_cfg_buf(lcfg, 1);
883 if ((strcmp(mml->mml_marker.cm_comment, marker->cm_comment) == 0) &&
884 (strcmp(mml->mml_marker.cm_tgtname, marker->cm_tgtname) == 0) &&
885 !(marker->cm_flags & CM_SKIP)) {
886 /* Found a non-skipped marker match */
887 CDEBUG(D_MGS, "Changing rec %u marker %d %x->%x: %s %s\n",
888 rec->lrh_index, marker->cm_step,
889 marker->cm_flags, mml->mml_marker.cm_flags,
890 marker->cm_tgtname, marker->cm_comment);
891 /* Overwrite the old marker llog entry */
892 marker->cm_flags &= ~CM_EXCLUDE; /* in case we're unexcluding */
893 marker->cm_flags |= mml->mml_marker.cm_flags;
894 marker->cm_canceltime = mml->mml_marker.cm_canceltime;
895 rc = llog_write(env, llh, rec, rec->lrh_index);
904 * Modify an existing config log record (for CM_SKIP or CM_EXCLUDE)
906 * 0 - modified successfully,
907 * 1 - no modification was done
910 static int mgs_modify(const struct lu_env *env, struct mgs_device *mgs,
911 struct fs_db *fsdb, struct mgs_target_info *mti,
912 char *logname, char *devname, char *comment, int flags)
914 struct llog_handle *loghandle;
915 struct llog_ctxt *ctxt;
916 struct mgs_modify_lookup *mml;
921 LASSERT(mutex_is_locked(&fsdb->fsdb_mutex));
922 CDEBUG(D_MGS, "modify %s/%s/%s fl=%x\n", logname, devname, comment,
925 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
926 LASSERT(ctxt != NULL);
927 rc = llog_open(env, ctxt, &loghandle, NULL, logname, LLOG_OPEN_EXISTS);
934 rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN, NULL);
938 if (llog_get_size(loghandle) <= 1)
939 GOTO(out_close, rc = 0);
943 GOTO(out_close, rc = -ENOMEM);
944 if (strlcpy(mml->mml_marker.cm_comment, comment,
945 sizeof(mml->mml_marker.cm_comment)) >=
946 sizeof(mml->mml_marker.cm_comment))
947 GOTO(out_free, rc = -E2BIG);
948 if (strlcpy(mml->mml_marker.cm_tgtname, devname,
949 sizeof(mml->mml_marker.cm_tgtname)) >=
950 sizeof(mml->mml_marker.cm_tgtname))
951 GOTO(out_free, rc = -E2BIG);
952 /* Modify mostly means cancel */
953 mml->mml_marker.cm_flags = flags;
954 mml->mml_marker.cm_canceltime = flags ? ktime_get_real_seconds() : 0;
955 mml->mml_modified = 0;
956 rc = llog_process(env, loghandle, mgs_modify_handler, (void *)mml,
958 if (!rc && !mml->mml_modified)
965 llog_close(env, loghandle);
968 CERROR("%s: modify %s/%s failed: rc = %d\n",
969 mgs->mgs_obd->obd_name, mti->mti_svname, comment, rc);
982 /** This structure is passed to mgs_replace_handler */
983 struct mgs_replace_data {
984 /* Nids are replaced for this target device */
985 struct mgs_target_info target;
986 /* Temporary modified llog */
987 struct llog_handle *temp_llh;
988 enum replace_state state;
994 * Check: a) if block should be skipped
995 * b) is it target block
1000 * \retval 0 should not to be skipped
1001 * \retval 1 should to be skipped
1003 static int check_markers(struct lustre_cfg *lcfg,
1004 struct mgs_replace_data *mrd)
1006 struct cfg_marker *marker;
1008 /* Track markers. Find given device */
1009 if (lcfg->lcfg_command == LCFG_MARKER) {
1010 marker = lustre_cfg_buf(lcfg, 1);
1011 /* Clean llog from records marked as CM_SKIP.
1012 CM_EXCLUDE records are used for "active" command
1013 and can be restored if needed */
1014 if ((marker->cm_flags & (CM_SKIP | CM_START)) ==
1015 (CM_SKIP | CM_START)) {
1016 mrd->state = REPLACE_SKIP;
1020 if ((marker->cm_flags & (CM_SKIP | CM_END)) ==
1021 (CM_SKIP | CM_END)) {
1022 mrd->state = REPLACE_COPY;
1026 if (strcmp(mrd->target.mti_svname, marker->cm_tgtname) == 0) {
1027 LASSERT(!(marker->cm_flags & CM_START) ||
1028 !(marker->cm_flags & CM_END));
1029 if (marker->cm_flags & CM_START) {
1030 mrd->state = REPLACE_UUID;
1031 mrd->failover = NULL;
1032 } else if (marker->cm_flags & CM_END)
1033 mrd->state = REPLACE_COPY;
1040 static int record_base(const struct lu_env *env, struct llog_handle *llh,
1041 char *cfgname, lnet_nid_t nid, int cmd,
1042 char *s1, char *s2, char *s3, char *s4)
1044 struct mgs_thread_info *mgi = mgs_env_info(env);
1045 struct llog_cfg_rec *lcr;
1048 CDEBUG(D_MGS, "lcfg %s %#x %s %s %s %s\n", cfgname,
1049 cmd, s1, s2, s3, s4);
1051 lustre_cfg_bufs_reset(&mgi->mgi_bufs, cfgname);
1053 lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 1, s1);
1055 lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 2, s2);
1057 lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 3, s3);
1059 lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 4, s4);
1061 lcr = lustre_cfg_rec_new(cmd, &mgi->mgi_bufs);
1065 lcr->lcr_cfg.lcfg_nid = nid;
1066 rc = llog_write(env, llh, &lcr->lcr_hdr, LLOG_NEXT_IDX);
1068 lustre_cfg_rec_free(lcr);
1072 "failed to write lcfg %s %#x %s %s %s %s: rc = %d\n",
1073 cfgname, cmd, s1, s2, s3, s4, rc);
1077 static inline int record_add_uuid(const struct lu_env *env,
1078 struct llog_handle *llh,
1079 uint64_t nid, char *uuid)
1081 return record_base(env, llh, NULL, nid, LCFG_ADD_UUID, uuid,
1085 static inline int record_add_conn(const struct lu_env *env,
1086 struct llog_handle *llh,
1087 char *devname, char *uuid)
1089 return record_base(env, llh, devname, 0, LCFG_ADD_CONN, uuid,
1093 static inline int record_attach(const struct lu_env *env,
1094 struct llog_handle *llh, char *devname,
1095 char *type, char *uuid)
1097 return record_base(env, llh, devname, 0, LCFG_ATTACH, type, uuid,
1101 static inline int record_setup(const struct lu_env *env,
1102 struct llog_handle *llh, char *devname,
1103 char *s1, char *s2, char *s3, char *s4)
1105 return record_base(env, llh, devname, 0, LCFG_SETUP, s1, s2, s3, s4);
1109 * \retval <0 record processing error
1110 * \retval n record is processed. No need copy original one.
1111 * \retval 0 record is not processed.
1113 static int process_command(const struct lu_env *env, struct lustre_cfg *lcfg,
1114 struct mgs_replace_data *mrd)
1121 if (mrd->state == REPLACE_UUID &&
1122 lcfg->lcfg_command == LCFG_ADD_UUID) {
1123 /* LCFG_ADD_UUID command found. Let's skip original command
1124 and add passed nids */
1125 ptr = mrd->target.mti_params;
1126 while (class_parse_nid(ptr, &nid, &ptr) == 0) {
1127 if (!mrd->nodeuuid) {
1128 rc = name_create(&mrd->nodeuuid,
1129 libcfs_nid2str(nid), "");
1131 CERROR("Can't create uuid for "
1132 "nid %s, device %s\n",
1133 libcfs_nid2str(nid),
1134 mrd->target.mti_svname);
1138 CDEBUG(D_MGS, "add nid %s with uuid %s, "
1139 "device %s\n", libcfs_nid2str(nid),
1140 mrd->target.mti_params,
1142 rc = record_add_uuid(env,
1149 mrd->failover = ptr;
1154 if (nids_added == 0) {
1155 CERROR("No new nids were added, nid %s with uuid %s, "
1156 "device %s\n", libcfs_nid2str(nid),
1157 mrd->nodeuuid ? mrd->nodeuuid : "NULL",
1158 mrd->target.mti_svname);
1159 name_destroy(&mrd->nodeuuid);
1162 mrd->state = REPLACE_SETUP;
1168 if (mrd->state == REPLACE_SETUP && lcfg->lcfg_command == LCFG_SETUP) {
1169 /* LCFG_SETUP command found. UUID should be changed */
1170 rc = record_setup(env,
1172 /* devname the same */
1173 lustre_cfg_string(lcfg, 0),
1174 /* s1 is not changed */
1175 lustre_cfg_string(lcfg, 1),
1177 /* s3 is not changed */
1178 lustre_cfg_string(lcfg, 3),
1179 /* s4 is not changed */
1180 lustre_cfg_string(lcfg, 4));
1182 name_destroy(&mrd->nodeuuid);
1186 if (mrd->failover) {
1187 ptr = mrd->failover;
1188 while (class_parse_nid(ptr, &nid, &ptr) == 0) {
1189 if (mrd->nodeuuid == NULL) {
1190 rc = name_create(&mrd->nodeuuid,
1191 libcfs_nid2str(nid),
1197 CDEBUG(D_MGS, "add nid %s for failover %s\n",
1198 libcfs_nid2str(nid), mrd->nodeuuid);
1199 rc = record_add_uuid(env, mrd->temp_llh, nid,
1202 name_destroy(&mrd->nodeuuid);
1206 rc = record_add_conn(env,
1208 lustre_cfg_string(lcfg, 0),
1210 name_destroy(&mrd->nodeuuid);
1215 if (mrd->nodeuuid) {
1216 rc = record_add_conn(env, mrd->temp_llh,
1217 lustre_cfg_string(lcfg, 0),
1219 name_destroy(&mrd->nodeuuid);
1224 mrd->state = REPLACE_DONE;
1228 /* Another commands in target device block */
1233 * Handler that called for every record in llog.
1234 * Records are processed in order they placed in llog.
1236 * \param[in] llh log to be processed
1237 * \param[in] rec current record
1238 * \param[in] data mgs_replace_data structure
1242 static int mgs_replace_nids_handler(const struct lu_env *env,
1243 struct llog_handle *llh,
1244 struct llog_rec_hdr *rec,
1247 struct mgs_replace_data *mrd;
1248 struct lustre_cfg *lcfg = REC_DATA(rec);
1249 int cfg_len = REC_DATA_LEN(rec);
1253 mrd = (struct mgs_replace_data *)data;
1255 if (rec->lrh_type != OBD_CFG_REC) {
1256 CERROR("unhandled lrh_type: %#x, cmd %x %s %s\n",
1257 rec->lrh_type, lcfg->lcfg_command,
1258 lustre_cfg_string(lcfg, 0),
1259 lustre_cfg_string(lcfg, 1));
1263 rc = lustre_cfg_sanity_check(lcfg, cfg_len);
1265 /* Do not copy any invalidated records */
1266 GOTO(skip_out, rc = 0);
1269 rc = check_markers(lcfg, mrd);
1270 if (rc || mrd->state == REPLACE_SKIP)
1271 GOTO(skip_out, rc = 0);
1273 /* Write to new log all commands outside target device block */
1274 if (mrd->state == REPLACE_COPY)
1275 GOTO(copy_out, rc = 0);
1277 if (mrd->state == REPLACE_DONE &&
1278 (lcfg->lcfg_command == LCFG_ADD_UUID ||
1279 lcfg->lcfg_command == LCFG_ADD_CONN)) {
1281 CWARN("Previous failover is deleted, but new one is "
1282 "not set. This means you configure system "
1283 "without failover or passed wrong replace_nids "
1284 "command parameters. Device %s, passed nids %s\n",
1285 mrd->target.mti_svname, mrd->target.mti_params);
1286 GOTO(skip_out, rc = 0);
1289 rc = process_command(env, lcfg, mrd);
1296 /* Record is placed in temporary llog as is */
1297 rc = llog_write(env, mrd->temp_llh, rec, LLOG_NEXT_IDX);
1299 CDEBUG(D_MGS, "Copied idx=%d, rc=%d, len=%d, cmd %x %s %s\n",
1300 rec->lrh_index, rc, rec->lrh_len, lcfg->lcfg_command,
1301 lustre_cfg_string(lcfg, 0), lustre_cfg_string(lcfg, 1));
1305 CDEBUG(D_MGS, "Skipped idx=%d, rc=%d, len=%d, cmd %x %s %s\n",
1306 rec->lrh_index, rc, rec->lrh_len, lcfg->lcfg_command,
1307 lustre_cfg_string(lcfg, 0), lustre_cfg_string(lcfg, 1));
1311 static int mgs_log_is_empty(const struct lu_env *env,
1312 struct mgs_device *mgs, char *name)
1314 struct llog_ctxt *ctxt;
1317 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1318 LASSERT(ctxt != NULL);
1320 rc = llog_is_empty(env, ctxt, name);
1321 llog_ctxt_put(ctxt);
1325 static int mgs_replace_log(const struct lu_env *env,
1326 struct obd_device *mgs,
1327 char *logname, char *devname,
1328 llog_cb_t replace_handler, void *data)
1330 struct llog_handle *orig_llh, *backup_llh;
1331 struct llog_ctxt *ctxt;
1332 struct mgs_replace_data *mrd;
1333 struct mgs_device *mgs_dev = lu2mgs_dev(mgs->obd_lu_dev);
1334 static struct obd_uuid cfg_uuid = { .uuid = "config_uuid" };
1336 int rc, rc2, buf_size;
1340 ctxt = llog_get_context(mgs, LLOG_CONFIG_ORIG_CTXT);
1341 LASSERT(ctxt != NULL);
1343 if (mgs_log_is_empty(env, mgs_dev, logname)) {
1344 /* Log is empty. Nothing to replace */
1345 GOTO(out_put, rc = 0);
1348 now = ktime_get_real_seconds();
1350 /* max time64_t in decimal fits into 20 bytes long string */
1351 buf_size = strlen(logname) + 1 + 20 + 1 + strlen(".bak") + 1;
1352 OBD_ALLOC(backup, buf_size);
1354 GOTO(out_put, rc = -ENOMEM);
1356 snprintf(backup, buf_size, "%s.%llu.bak", logname, now);
1358 rc = llog_backup(env, mgs, ctxt, ctxt, logname, backup);
1360 /* Now erase original log file. Connections are not allowed.
1361 Backup is already saved */
1362 rc = llog_erase(env, ctxt, NULL, logname);
1365 } else if (rc != -ENOENT) {
1366 CERROR("%s: can't make backup for %s: rc = %d\n",
1367 mgs->obd_name, logname, rc);
1371 /* open local log */
1372 rc = llog_open_create(env, ctxt, &orig_llh, NULL, logname);
1374 GOTO(out_restore, rc);
1376 rc = llog_init_handle(env, orig_llh, LLOG_F_IS_PLAIN, &cfg_uuid);
1378 GOTO(out_closel, rc);
1380 /* open backup llog */
1381 rc = llog_open(env, ctxt, &backup_llh, NULL, backup,
1384 GOTO(out_closel, rc);
1386 rc = llog_init_handle(env, backup_llh, LLOG_F_IS_PLAIN, NULL);
1388 GOTO(out_close, rc);
1390 if (llog_get_size(backup_llh) <= 1)
1391 GOTO(out_close, rc = 0);
1395 GOTO(out_close, rc = -ENOMEM);
1396 /* devname is only needed information to replace UUID records */
1398 strlcpy(mrd->target.mti_svname, devname,
1399 sizeof(mrd->target.mti_svname));
1400 /* data is parsed in llog callback */
1402 strlcpy(mrd->target.mti_params, data,
1403 sizeof(mrd->target.mti_params));
1404 /* Copy records to this temporary llog */
1405 mrd->temp_llh = orig_llh;
1407 rc = llog_process(env, backup_llh, replace_handler,
1411 rc2 = llog_close(NULL, backup_llh);
1415 rc2 = llog_close(NULL, orig_llh);
1421 CERROR("%s: llog should be restored: rc = %d\n",
1423 rc2 = llog_backup(env, mgs, ctxt, ctxt, backup,
1426 CERROR("%s: can't restore backup %s: rc = %d\n",
1427 mgs->obd_name, logname, rc2);
1431 OBD_FREE(backup, buf_size);
1434 llog_ctxt_put(ctxt);
1437 CERROR("%s: failed to replace log %s: rc = %d\n",
1438 mgs->obd_name, logname, rc);
1443 static int mgs_replace_nids_log(const struct lu_env *env,
1444 struct obd_device *obd,
1445 char *logname, char *devname, char *nids)
1447 CDEBUG(D_MGS, "Replace NIDs for %s in %s\n", devname, logname);
1448 return mgs_replace_log(env, obd, logname, devname,
1449 mgs_replace_nids_handler, nids);
1453 * Parse device name and get file system name and/or device index
1455 * @devname device name (ex. lustre-MDT0000)
1456 * @fsname file system name extracted from @devname and returned
1457 * to the caller (optional)
1458 * @index device index extracted from @devname and returned to
1459 * the caller (optional)
1461 * RETURN 0 success if we are only interested in
1462 * extracting fsname from devname.
1465 * LDD_F_SV_TYPE_* Besides extracting the fsname the
1466 * user also wants the index. Report to
1467 * the user the type of obd device the
1468 * returned index belongs too.
1470 * -EINVAL The obd device name is improper so
1471 * fsname could not be extracted.
1473 * -ENXIO Failed to extract the index out of
1474 * the obd device name. Most likely an
1475 * invalid obd device name
1477 static int mgs_parse_devname(char *devname, char *fsname, u32 *index)
1482 /* Extract fsname */
1484 rc = server_name2fsname(devname, fsname, NULL);
1486 CDEBUG(D_MGS, "Device name %s without fsname\n",
1493 rc = server_name2index(devname, index, NULL);
1495 CDEBUG(D_MGS, "Device name %s with wrong index\n",
1501 /* server_name2index can return LDD_F_SV_TYPE_* so always return rc */
1505 /* This is only called during replace_nids */
1506 static int only_mgs_is_running(struct obd_device *mgs_obd)
1508 /* TDB: Is global variable with devices count exists? */
1509 int num_devices = get_devices_count();
1510 int num_exports = 0;
1511 struct obd_export *exp;
1513 spin_lock(&mgs_obd->obd_dev_lock);
1514 list_for_each_entry(exp, &mgs_obd->obd_exports, exp_obd_chain) {
1515 /* skip self export */
1516 if (exp == mgs_obd->obd_self_export)
1518 if (exp_connect_flags(exp) & OBD_CONNECT_MDS_MDS)
1523 CERROR("%s: node %s still connected during replace_nids "
1524 "connect_flags:%llx\n",
1526 libcfs_nid2str(exp->exp_nid_stats->nid),
1527 exp_connect_flags(exp));
1530 spin_unlock(&mgs_obd->obd_dev_lock);
1532 /* osd, MGS and MGC + self_export
1533 (wc -l /proc/fs/lustre/devices <= 2) && (non self exports == 0) */
1534 return (num_devices <= 3) && (num_exports == 0);
1537 static int name_create_mdt(char **logname, char *fsname, int mdt_idx)
1541 if (mdt_idx > INDEX_MAP_MAX_VALUE)
1544 snprintf(postfix, sizeof(postfix), "-MDT%04x", mdt_idx);
1545 return name_create(logname, fsname, postfix);
1549 * Replace nids for \a device to \a nids values
1551 * \param obd MGS obd device
1552 * \param devname nids need to be replaced for this device
1553 * (ex. lustre-OST0000)
1554 * \param nids nids list (ex. nid1,nid2,nid3)
1558 int mgs_replace_nids(const struct lu_env *env,
1559 struct mgs_device *mgs,
1560 char *devname, char *nids)
1562 /* Assume fsname is part of device name */
1563 char fsname[MTI_NAME_MAXLEN];
1567 struct fs_db *fsdb = NULL;
1570 struct obd_device *mgs_obd = mgs->mgs_obd;
1573 /* We can only change NIDs if no other nodes are connected */
1574 spin_lock(&mgs_obd->obd_dev_lock);
1575 conn_state = mgs_obd->obd_no_conn;
1576 mgs_obd->obd_no_conn = 1;
1577 spin_unlock(&mgs_obd->obd_dev_lock);
1579 /* We can not change nids if not only MGS is started */
1580 if (!only_mgs_is_running(mgs_obd)) {
1581 CERROR("Only MGS is allowed to be started\n");
1582 GOTO(out, rc = -EINPROGRESS);
1585 /* Get fsname and index */
1586 rc = mgs_parse_devname(devname, fsname, &index);
1590 rc = mgs_find_or_make_fsdb(env, mgs, fsname, &fsdb);
1592 CERROR("%s: can't find fsdb: rc = %d\n", fsname, rc);
1596 /* Process client llogs */
1597 name_create(&logname, fsname, "-client");
1598 rc = mgs_replace_nids_log(env, mgs_obd, logname, devname, nids);
1599 name_destroy(&logname);
1601 CERROR("%s: error while replacing NIDs for %s: rc = %d\n",
1602 fsname, devname, rc);
1606 /* Process MDT llogs */
1607 for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
1608 if (!test_bit(i, fsdb->fsdb_mdt_index_map))
1610 name_create_mdt(&logname, fsname, i);
1611 rc = mgs_replace_nids_log(env, mgs_obd, logname, devname, nids);
1612 name_destroy(&logname);
1618 spin_lock(&mgs_obd->obd_dev_lock);
1619 mgs_obd->obd_no_conn = conn_state;
1620 spin_unlock(&mgs_obd->obd_dev_lock);
1623 mgs_put_fsdb(mgs, fsdb);
1629 * This is called for every record in llog. Some of records are
1630 * skipped, others are copied to new log as is.
1631 * Records to be skipped are
1632 * marker records marked SKIP
1633 * records enclosed between SKIP markers
1635 * \param[in] llh log to be processed
1636 * \param[in] rec current record
1637 * \param[in] data mgs_replace_data structure
1641 static int mgs_clear_config_handler(const struct lu_env *env,
1642 struct llog_handle *llh,
1643 struct llog_rec_hdr *rec, void *data)
1645 struct mgs_replace_data *mrd;
1646 struct lustre_cfg *lcfg = REC_DATA(rec);
1647 int cfg_len = REC_DATA_LEN(rec);
1652 mrd = (struct mgs_replace_data *)data;
1654 if (rec->lrh_type != OBD_CFG_REC) {
1655 CDEBUG(D_MGS, "Config llog Name=%s, Record Index=%u, "
1656 "Unhandled Record Type=%#x\n", llh->lgh_name,
1657 rec->lrh_index, rec->lrh_type);
1661 rc = lustre_cfg_sanity_check(lcfg, cfg_len);
1663 CDEBUG(D_MGS, "Config llog Name=%s, Invalid config file.",
1668 if (lcfg->lcfg_command == LCFG_MARKER) {
1669 struct cfg_marker *marker;
1671 marker = lustre_cfg_buf(lcfg, 1);
1672 if (marker->cm_flags & CM_SKIP) {
1673 if (marker->cm_flags & CM_START)
1674 mrd->state = REPLACE_SKIP;
1675 if (marker->cm_flags & CM_END)
1676 mrd->state = REPLACE_COPY;
1677 /* SKIP section started or finished */
1678 CDEBUG(D_MGS, "Skip idx=%d, rc=%d, len=%d, "
1679 "cmd %x %s %s\n", rec->lrh_index, rc,
1680 rec->lrh_len, lcfg->lcfg_command,
1681 lustre_cfg_string(lcfg, 0),
1682 lustre_cfg_string(lcfg, 1));
1686 if (mrd->state == REPLACE_SKIP) {
1687 /* record enclosed between SKIP markers, skip it */
1688 CDEBUG(D_MGS, "Skip idx=%d, rc=%d, len=%d, "
1689 "cmd %x %s %s\n", rec->lrh_index, rc,
1690 rec->lrh_len, lcfg->lcfg_command,
1691 lustre_cfg_string(lcfg, 0),
1692 lustre_cfg_string(lcfg, 1));
1697 /* Record is placed in temporary llog as is */
1698 rc = llog_write(env, mrd->temp_llh, rec, LLOG_NEXT_IDX);
1700 CDEBUG(D_MGS, "Copied idx=%d, rc=%d, len=%d, cmd %x %s %s\n",
1701 rec->lrh_index, rc, rec->lrh_len, lcfg->lcfg_command,
1702 lustre_cfg_string(lcfg, 0), lustre_cfg_string(lcfg, 1));
1707 * Directory CONFIGS/ may contain files which are not config logs to
1708 * be cleared. Skip any llogs with a non-alphanumeric character after
1709 * the last '-'. For example, fsname-MDT0000.sav, fsname-MDT0000.bak,
1710 * fsname-MDT0000.orig, fsname-MDT0000~, fsname-MDT0000.20150516, etc.
1712 static bool config_to_clear(const char *logname)
1717 str = strrchr(logname, '-');
1722 while (isalnum(str[++i]));
1723 return str[i] == '\0';
1727 * Clear config logs for \a name
1730 * \param mgs MGS device
1731 * \param name name of device or of filesystem
1732 * (ex. lustre-OST0000 or lustre) in later case all logs
1737 int mgs_clear_configs(const struct lu_env *env,
1738 struct mgs_device *mgs, const char *name)
1740 struct list_head dentry_list;
1741 struct mgs_direntry *dirent, *n;
1744 struct obd_device *mgs_obd = mgs->mgs_obd;
1749 /* Prevent clients and servers from connecting to mgs */
1750 spin_lock(&mgs_obd->obd_dev_lock);
1751 conn_state = mgs_obd->obd_no_conn;
1752 mgs_obd->obd_no_conn = 1;
1753 spin_unlock(&mgs_obd->obd_dev_lock);
1756 * config logs cannot be cleaned if anything other than
1759 if (!only_mgs_is_running(mgs_obd)) {
1760 CERROR("Only MGS is allowed to be started\n");
1761 GOTO(out, rc = -EBUSY);
1764 /* Find all the logs in the CONFIGS directory */
1765 rc = class_dentry_readdir(env, mgs, &dentry_list);
1767 CERROR("%s: cannot read config directory '%s': rc = %d\n",
1768 mgs_obd->obd_name, MOUNT_CONFIGS_DIR, rc);
1772 if (list_empty(&dentry_list)) {
1773 CERROR("%s: list empty reading config dir '%s': rc = %d\n",
1774 mgs_obd->obd_name, MOUNT_CONFIGS_DIR, -ENOENT);
1775 GOTO(out, rc = -ENOENT);
1778 OBD_ALLOC(namedash, strlen(name) + 2);
1779 if (namedash == NULL)
1780 GOTO(out, rc = -ENOMEM);
1781 snprintf(namedash, strlen(name) + 2, "%s-", name);
1783 list_for_each_entry(dirent, &dentry_list, mde_list) {
1784 if (strcmp(name, dirent->mde_name) &&
1785 strncmp(namedash, dirent->mde_name, strlen(namedash)))
1787 if (!config_to_clear(dirent->mde_name))
1789 CDEBUG(D_MGS, "%s: Clear config log %s\n",
1790 mgs_obd->obd_name, dirent->mde_name);
1791 rc = mgs_replace_log(env, mgs_obd, dirent->mde_name, NULL,
1792 mgs_clear_config_handler, NULL);
1797 list_for_each_entry_safe(dirent, n, &dentry_list, mde_list) {
1798 list_del_init(&dirent->mde_list);
1799 mgs_direntry_free(dirent);
1801 OBD_FREE(namedash, strlen(name) + 2);
1803 spin_lock(&mgs_obd->obd_dev_lock);
1804 mgs_obd->obd_no_conn = conn_state;
1805 spin_unlock(&mgs_obd->obd_dev_lock);
1810 static int record_lov_setup(const struct lu_env *env, struct llog_handle *llh,
1811 char *devname, struct lov_desc *desc)
1813 struct mgs_thread_info *mgi = mgs_env_info(env);
1814 struct llog_cfg_rec *lcr;
1817 lustre_cfg_bufs_reset(&mgi->mgi_bufs, devname);
1818 lustre_cfg_bufs_set(&mgi->mgi_bufs, 1, desc, sizeof(*desc));
1819 lcr = lustre_cfg_rec_new(LCFG_SETUP, &mgi->mgi_bufs);
1823 rc = llog_write(env, llh, &lcr->lcr_hdr, LLOG_NEXT_IDX);
1824 lustre_cfg_rec_free(lcr);
1828 static int record_lmv_setup(const struct lu_env *env, struct llog_handle *llh,
1829 char *devname, struct lmv_desc *desc)
1831 struct mgs_thread_info *mgi = mgs_env_info(env);
1832 struct llog_cfg_rec *lcr;
1835 lustre_cfg_bufs_reset(&mgi->mgi_bufs, devname);
1836 lustre_cfg_bufs_set(&mgi->mgi_bufs, 1, desc, sizeof(*desc));
1837 lcr = lustre_cfg_rec_new(LCFG_SETUP, &mgi->mgi_bufs);
1841 rc = llog_write(env, llh, &lcr->lcr_hdr, LLOG_NEXT_IDX);
1842 lustre_cfg_rec_free(lcr);
1846 static inline int record_mdc_add(const struct lu_env *env,
1847 struct llog_handle *llh,
1848 char *logname, char *mdcuuid,
1849 char *mdtuuid, char *index,
1852 return record_base(env,llh,logname,0,LCFG_ADD_MDC,
1853 mdtuuid,index,gen,mdcuuid);
1856 static inline int record_lov_add(const struct lu_env *env,
1857 struct llog_handle *llh,
1858 char *lov_name, char *ost_uuid,
1859 char *index, char *gen)
1861 return record_base(env, llh, lov_name, 0, LCFG_LOV_ADD_OBD,
1862 ost_uuid, index, gen, NULL);
1865 static inline int record_mount_opt(const struct lu_env *env,
1866 struct llog_handle *llh,
1867 char *profile, char *lov_name,
1870 return record_base(env, llh, NULL, 0, LCFG_MOUNTOPT,
1871 profile, lov_name, mdc_name, NULL);
1874 static int record_marker(const struct lu_env *env,
1875 struct llog_handle *llh,
1876 struct fs_db *fsdb, __u32 flags,
1877 char *tgtname, char *comment)
1879 struct mgs_thread_info *mgi = mgs_env_info(env);
1880 struct llog_cfg_rec *lcr;
1884 if (flags & CM_START)
1886 mgi->mgi_marker.cm_step = fsdb->fsdb_gen;
1887 mgi->mgi_marker.cm_flags = flags;
1888 mgi->mgi_marker.cm_vers = LUSTRE_VERSION_CODE;
1889 cplen = strlcpy(mgi->mgi_marker.cm_tgtname, tgtname,
1890 sizeof(mgi->mgi_marker.cm_tgtname));
1891 if (cplen >= sizeof(mgi->mgi_marker.cm_tgtname))
1893 cplen = strlcpy(mgi->mgi_marker.cm_comment, comment,
1894 sizeof(mgi->mgi_marker.cm_comment));
1895 if (cplen >= sizeof(mgi->mgi_marker.cm_comment))
1897 mgi->mgi_marker.cm_createtime = ktime_get_real_seconds();
1898 mgi->mgi_marker.cm_canceltime = 0;
1899 lustre_cfg_bufs_reset(&mgi->mgi_bufs, NULL);
1900 lustre_cfg_bufs_set(&mgi->mgi_bufs, 1, &mgi->mgi_marker,
1901 sizeof(mgi->mgi_marker));
1902 lcr = lustre_cfg_rec_new(LCFG_MARKER, &mgi->mgi_bufs);
1906 rc = llog_write(env, llh, &lcr->lcr_hdr, LLOG_NEXT_IDX);
1907 lustre_cfg_rec_free(lcr);
1911 static int record_start_log(const struct lu_env *env, struct mgs_device *mgs,
1912 struct llog_handle **llh, char *name)
1914 static struct obd_uuid cfg_uuid = { .uuid = "config_uuid" };
1915 struct llog_ctxt *ctxt;
1920 GOTO(out, rc = -EBUSY);
1922 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1924 GOTO(out, rc = -ENODEV);
1925 LASSERT(ctxt->loc_obd == mgs->mgs_obd);
1927 rc = llog_open_create(env, ctxt, llh, NULL, name);
1930 rc = llog_init_handle(env, *llh, LLOG_F_IS_PLAIN, &cfg_uuid);
1932 llog_close(env, *llh);
1934 llog_ctxt_put(ctxt);
1937 CERROR("%s: can't start log %s: rc = %d\n",
1938 mgs->mgs_obd->obd_name, name, rc);
1944 static int record_end_log(const struct lu_env *env, struct llog_handle **llh)
1948 rc = llog_close(env, *llh);
1954 /******************** config "macros" *********************/
1956 /* write an lcfg directly into a log (with markers) */
1957 static int mgs_write_log_direct(const struct lu_env *env,
1958 struct mgs_device *mgs, struct fs_db *fsdb,
1959 char *logname, struct llog_cfg_rec *lcr,
1960 char *devname, char *comment)
1962 struct llog_handle *llh = NULL;
1967 rc = record_start_log(env, mgs, &llh, logname);
1971 /* FIXME These should be a single journal transaction */
1972 rc = record_marker(env, llh, fsdb, CM_START, devname, comment);
1975 rc = llog_write(env, llh, &lcr->lcr_hdr, LLOG_NEXT_IDX);
1978 rc = record_marker(env, llh, fsdb, CM_END, devname, comment);
1982 record_end_log(env, &llh);
1986 /* write the lcfg in all logs for the given fs */
1987 static int mgs_write_log_direct_all(const struct lu_env *env,
1988 struct mgs_device *mgs,
1990 struct mgs_target_info *mti,
1991 struct llog_cfg_rec *lcr, char *devname,
1992 char *comment, int server_only)
1994 struct list_head log_list;
1995 struct mgs_direntry *dirent, *n;
1996 char *fsname = mti->mti_fsname;
1997 int rc = 0, len = strlen(fsname);
2000 /* Find all the logs in the CONFIGS directory */
2001 rc = class_dentry_readdir(env, mgs, &log_list);
2005 /* Could use fsdb index maps instead of directory listing */
2006 list_for_each_entry_safe(dirent, n, &log_list, mde_list) {
2007 list_del_init(&dirent->mde_list);
2008 /* don't write to sptlrpc rule log */
2009 if (strstr(dirent->mde_name, "-sptlrpc") != NULL)
2012 /* caller wants write server logs only */
2013 if (server_only && strstr(dirent->mde_name, "-client") != NULL)
2016 if (strlen(dirent->mde_name) <= len ||
2017 strncmp(fsname, dirent->mde_name, len) != 0 ||
2018 dirent->mde_name[len] != '-')
2021 CDEBUG(D_MGS, "Changing log %s\n", dirent->mde_name);
2022 /* Erase any old settings of this same parameter */
2023 rc = mgs_modify(env, mgs, fsdb, mti, dirent->mde_name,
2024 devname, comment, CM_SKIP);
2026 CERROR("%s: Can't modify llog %s: rc = %d\n",
2027 mgs->mgs_obd->obd_name, dirent->mde_name, rc);
2030 /* Write the new one */
2031 rc = mgs_write_log_direct(env, mgs, fsdb, dirent->mde_name,
2032 lcr, devname, comment);
2034 CERROR("%s: writing log %s: rc = %d\n",
2035 mgs->mgs_obd->obd_name, dirent->mde_name, rc);
2037 mgs_direntry_free(dirent);
2043 static int mgs_write_log_osp_to_mdt(const struct lu_env *env,
2044 struct mgs_device *mgs,
2046 struct mgs_target_info *mti,
2047 int index, char *logname);
2048 static int mgs_write_log_osc_to_lov(const struct lu_env *env,
2049 struct mgs_device *mgs,
2051 struct mgs_target_info *mti,
2052 char *logname, char *suffix, char *lovname,
2053 enum lustre_sec_part sec_part, int flags);
2054 static int name_create_mdt_and_lov(char **logname, char **lovname,
2055 struct fs_db *fsdb, int i);
2057 static int add_param(char *params, char *key, char *val)
2059 char *start = params + strlen(params);
2060 char *end = params + sizeof(((struct mgs_target_info *)0)->mti_params);
2064 keylen = strlen(key);
2065 if (start + 1 + keylen + strlen(val) >= end) {
2066 CERROR("params are too long: %s %s%s\n",
2067 params, key != NULL ? key : "", val);
2071 sprintf(start, " %s%s", key != NULL ? key : "", val);
2076 * Walk through client config log record and convert the related records
2079 static int mgs_steal_client_llog_handler(const struct lu_env *env,
2080 struct llog_handle *llh,
2081 struct llog_rec_hdr *rec, void *data)
2083 struct mgs_device *mgs;
2084 struct obd_device *obd;
2085 struct mgs_target_info *mti, *tmti;
2087 int cfg_len = rec->lrh_len;
2088 char *cfg_buf = (char*) (rec + 1);
2089 struct lustre_cfg *lcfg;
2091 struct llog_handle *mdt_llh = NULL;
2092 static int got_an_osc_or_mdc = 0;
2093 /* 0: not found any osc/mdc;
2097 static int last_step = -1;
2102 mti = ((struct temp_comp*)data)->comp_mti;
2103 tmti = ((struct temp_comp*)data)->comp_tmti;
2104 fsdb = ((struct temp_comp*)data)->comp_fsdb;
2105 obd = ((struct temp_comp *)data)->comp_obd;
2106 mgs = lu2mgs_dev(obd->obd_lu_dev);
2109 if (rec->lrh_type != OBD_CFG_REC) {
2110 CERROR("unhandled lrh_type: %#x\n", rec->lrh_type);
2114 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
2116 CERROR("Insane cfg\n");
2120 lcfg = (struct lustre_cfg *)cfg_buf;
2122 if (lcfg->lcfg_command == LCFG_MARKER) {
2123 struct cfg_marker *marker;
2124 marker = lustre_cfg_buf(lcfg, 1);
2125 if (!strncmp(marker->cm_comment, "add osc", 7) &&
2126 (marker->cm_flags & CM_START) &&
2127 !(marker->cm_flags & CM_SKIP)) {
2128 got_an_osc_or_mdc = 1;
2129 cplen = strlcpy(tmti->mti_svname, marker->cm_tgtname,
2130 sizeof(tmti->mti_svname));
2131 if (cplen >= sizeof(tmti->mti_svname))
2133 rc = record_start_log(env, mgs, &mdt_llh,
2137 rc = record_marker(env, mdt_llh, fsdb, CM_START,
2138 mti->mti_svname, "add osc(copied)");
2139 record_end_log(env, &mdt_llh);
2140 last_step = marker->cm_step;
2143 if (!strncmp(marker->cm_comment, "add osc", 7) &&
2144 (marker->cm_flags & CM_END) &&
2145 !(marker->cm_flags & CM_SKIP)) {
2146 LASSERT(last_step == marker->cm_step);
2148 got_an_osc_or_mdc = 0;
2149 memset(tmti, 0, sizeof(*tmti));
2150 rc = record_start_log(env, mgs, &mdt_llh,
2154 rc = record_marker(env, mdt_llh, fsdb, CM_END,
2155 mti->mti_svname, "add osc(copied)");
2156 record_end_log(env, &mdt_llh);
2159 if (!strncmp(marker->cm_comment, "add mdc", 7) &&
2160 (marker->cm_flags & CM_START) &&
2161 !(marker->cm_flags & CM_SKIP)) {
2162 got_an_osc_or_mdc = 2;
2163 last_step = marker->cm_step;
2164 memcpy(tmti->mti_svname, marker->cm_tgtname,
2165 strlen(marker->cm_tgtname));
2169 if (!strncmp(marker->cm_comment, "add mdc", 7) &&
2170 (marker->cm_flags & CM_END) &&
2171 !(marker->cm_flags & CM_SKIP)) {
2172 LASSERT(last_step == marker->cm_step);
2174 got_an_osc_or_mdc = 0;
2175 memset(tmti, 0, sizeof(*tmti));
2180 if (got_an_osc_or_mdc == 0 || last_step < 0)
2183 if (lcfg->lcfg_command == LCFG_ADD_UUID) {
2184 __u64 nodenid = lcfg->lcfg_nid;
2186 if (strlen(tmti->mti_uuid) == 0) {
2187 /* target uuid not set, this config record is before
2188 * LCFG_SETUP, this nid is one of target node nid.
2190 tmti->mti_nids[tmti->mti_nid_count] = nodenid;
2191 tmti->mti_nid_count++;
2193 char nidstr[LNET_NIDSTR_SIZE];
2195 /* failover node nid */
2196 libcfs_nid2str_r(nodenid, nidstr, sizeof(nidstr));
2197 rc = add_param(tmti->mti_params, PARAM_FAILNODE,
2204 if (lcfg->lcfg_command == LCFG_SETUP) {
2207 target = lustre_cfg_string(lcfg, 1);
2208 memcpy(tmti->mti_uuid, target, strlen(target));
2212 /* ignore client side sptlrpc_conf_log */
2213 if (lcfg->lcfg_command == LCFG_SPTLRPC_CONF)
2216 if (lcfg->lcfg_command == LCFG_ADD_MDC &&
2217 strstr(lustre_cfg_string(lcfg, 0), "-clilmv") != NULL) {
2220 if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1)
2223 memcpy(tmti->mti_fsname, mti->mti_fsname,
2224 strlen(mti->mti_fsname));
2225 tmti->mti_stripe_index = index;
2227 rc = mgs_write_log_osp_to_mdt(env, mgs, fsdb, tmti,
2228 mti->mti_stripe_index,
2230 memset(tmti, 0, sizeof(*tmti));
2234 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD) {
2237 char *logname, *lovname;
2239 rc = name_create_mdt_and_lov(&logname, &lovname, fsdb,
2240 mti->mti_stripe_index);
2243 sprintf(mdt_index, "-MDT%04x", mti->mti_stripe_index);
2245 if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1) {
2246 name_destroy(&logname);
2247 name_destroy(&lovname);
2251 tmti->mti_stripe_index = index;
2252 rc = mgs_write_log_osc_to_lov(env, mgs, fsdb, tmti, logname,
2255 name_destroy(&logname);
2256 name_destroy(&lovname);
2262 /* fsdb->fsdb_mutex is already held in mgs_write_log_target*/
2263 /* stealed from mgs_get_fsdb_from_llog*/
2264 static int mgs_steal_llog_for_mdt_from_client(const struct lu_env *env,
2265 struct mgs_device *mgs,
2267 struct temp_comp* comp)
2269 struct llog_handle *loghandle;
2270 struct mgs_target_info *tmti;
2271 struct llog_ctxt *ctxt;
2276 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
2277 LASSERT(ctxt != NULL);
2279 OBD_ALLOC_PTR(tmti);
2281 GOTO(out_ctxt, rc = -ENOMEM);
2283 comp->comp_tmti = tmti;
2284 comp->comp_obd = mgs->mgs_obd;
2286 rc = llog_open(env, ctxt, &loghandle, NULL, client_name,
2294 rc = llog_init_handle(env, loghandle, LLOG_F_IS_PLAIN, NULL);
2296 GOTO(out_close, rc);
2298 rc = llog_process_or_fork(env, loghandle, mgs_steal_client_llog_handler,
2299 (void *)comp, NULL, false);
2300 CDEBUG(D_MGS, "steal llog re = %d\n", rc);
2302 llog_close(env, loghandle);
2306 llog_ctxt_put(ctxt);
2310 /* lmv is the second thing for client logs */
2311 /* copied from mgs_write_log_lov. Please refer to that. */
2312 static int mgs_write_log_lmv(const struct lu_env *env,
2313 struct mgs_device *mgs,
2315 struct mgs_target_info *mti,
2316 char *logname, char *lmvname)
2318 struct llog_handle *llh = NULL;
2319 struct lmv_desc *lmvdesc;
2324 CDEBUG(D_MGS, "Writing lmv(%s) log for %s\n", lmvname,logname);
2326 OBD_ALLOC_PTR(lmvdesc);
2327 if (lmvdesc == NULL)
2329 lmvdesc->ld_active_tgt_count = 0;
2330 lmvdesc->ld_tgt_count = 0;
2331 sprintf((char*)lmvdesc->ld_uuid.uuid, "%s_UUID", lmvname);
2332 uuid = (char *)lmvdesc->ld_uuid.uuid;
2334 rc = record_start_log(env, mgs, &llh, logname);
2337 rc = record_marker(env, llh, fsdb, CM_START, lmvname, "lmv setup");
2340 rc = record_attach(env, llh, lmvname, "lmv", uuid);
2343 rc = record_lmv_setup(env, llh, lmvname, lmvdesc);
2346 rc = record_marker(env, llh, fsdb, CM_END, lmvname, "lmv setup");
2350 record_end_log(env, &llh);
2352 OBD_FREE_PTR(lmvdesc);
2356 /* lov is the first thing in the mdt and client logs */
2357 static int mgs_write_log_lov(const struct lu_env *env, struct mgs_device *mgs,
2358 struct fs_db *fsdb, struct mgs_target_info *mti,
2359 char *logname, char *lovname)
2361 struct llog_handle *llh = NULL;
2362 struct lov_desc *lovdesc;
2367 CDEBUG(D_MGS, "Writing lov(%s) log for %s\n", lovname, logname);
2370 #01 L attach 0:lov_mdsA 1:lov 2:71ccb_lov_mdsA_19f961a9e1
2371 #02 L lov_setup 0:lov_mdsA 1:(struct lov_desc)
2372 uuid=lov1_UUID, stripe count=1, size=1048576, offset=0, pattern=0
2375 /* FIXME just make lov_setup accept empty desc (put uuid in buf 2) */
2376 OBD_ALLOC_PTR(lovdesc);
2377 if (lovdesc == NULL)
2379 lovdesc->ld_magic = LOV_DESC_MAGIC;
2380 lovdesc->ld_tgt_count = 0;
2381 /* Defaults. Can be changed later by lcfg config_param */
2382 lovdesc->ld_default_stripe_count = 1;
2383 lovdesc->ld_pattern = LOV_PATTERN_RAID0;
2384 lovdesc->ld_default_stripe_size = LOV_DESC_STRIPE_SIZE_DEFAULT;
2385 lovdesc->ld_default_stripe_offset = -1;
2386 lovdesc->ld_qos_maxage = LOV_DESC_QOS_MAXAGE_DEFAULT;
2387 sprintf((char*)lovdesc->ld_uuid.uuid, "%s_UUID", lovname);
2388 /* can these be the same? */
2389 uuid = (char *)lovdesc->ld_uuid.uuid;
2391 /* This should always be the first entry in a log.
2392 rc = mgs_clear_log(obd, logname); */
2393 rc = record_start_log(env, mgs, &llh, logname);
2396 /* FIXME these should be a single journal transaction */
2397 rc = record_marker(env, llh, fsdb, CM_START, lovname, "lov setup");
2400 rc = record_attach(env, llh, lovname, "lov", uuid);
2403 rc = record_lov_setup(env, llh, lovname, lovdesc);
2406 rc = record_marker(env, llh, fsdb, CM_END, lovname, "lov setup");
2411 record_end_log(env, &llh);
2413 OBD_FREE_PTR(lovdesc);
2417 /* add failnids to open log */
2418 static int mgs_write_log_failnids(const struct lu_env *env,
2419 struct mgs_target_info *mti,
2420 struct llog_handle *llh,
2423 char *failnodeuuid = NULL;
2424 char *ptr = mti->mti_params;
2429 #03 L add_uuid nid=uml1@tcp(0x20000c0a80201) nal=90 0: 1:uml1_UUID
2430 #04 L add_uuid nid=1@elan(0x1000000000001) nal=90 0: 1:uml1_UUID
2431 #05 L setup 0:OSC_uml1_ost1_mdsA 1:ost1_UUID 2:uml1_UUID
2432 #06 L add_uuid nid=uml2@tcp(0x20000c0a80202) nal=90 0: 1:uml2_UUID
2433 #0x L add_uuid nid=2@elan(0x1000000000002) nal=90 0: 1:uml2_UUID
2434 #07 L add_conn 0:OSC_uml1_ost1_mdsA 1:uml2_UUID
2438 * Pull failnid info out of params string, which may contain something
2439 * like "<nid1>,<nid2>:<nid3>,<nid4>". class_parse_nid() does not
2440 * complain about abnormal inputs like ",:<nid1>", "<nid1>:,<nid2>",
2441 * etc. However, convert_hostnames() should have caught those.
2443 while (class_find_param(ptr, PARAM_FAILNODE, &ptr) == 0) {
2444 while (class_parse_nid(ptr, &nid, &ptr) == 0) {
2445 char nidstr[LNET_NIDSTR_SIZE];
2447 if (failnodeuuid == NULL) {
2448 /* We don't know the failover node name,
2449 * so just use the first nid as the uuid */
2450 libcfs_nid2str_r(nid, nidstr, sizeof(nidstr));
2451 rc = name_create(&failnodeuuid, nidstr, "");
2455 CDEBUG(D_MGS, "add nid %s for failover uuid %s, "
2457 libcfs_nid2str_r(nid, nidstr, sizeof(nidstr)),
2458 failnodeuuid, cliname);
2459 rc = record_add_uuid(env, llh, nid, failnodeuuid);
2461 * If *ptr is ':', we have added all NIDs for
2465 rc = record_add_conn(env, llh, cliname,
2467 name_destroy(&failnodeuuid);
2468 failnodeuuid = NULL;
2472 rc = record_add_conn(env, llh, cliname, failnodeuuid);
2473 name_destroy(&failnodeuuid);
2474 failnodeuuid = NULL;
2481 static int mgs_write_log_mdc_to_lmv(const struct lu_env *env,
2482 struct mgs_device *mgs,
2484 struct mgs_target_info *mti,
2485 char *logname, char *lmvname)
2487 struct llog_handle *llh = NULL;
2488 char *mdcname = NULL;
2489 char *nodeuuid = NULL;
2490 char *mdcuuid = NULL;
2491 char *lmvuuid = NULL;
2493 char nidstr[LNET_NIDSTR_SIZE];
2497 if (mgs_log_is_empty(env, mgs, logname)) {
2498 CERROR("log is empty! Logical error\n");
2502 CDEBUG(D_MGS, "adding mdc for %s to log %s:lmv(%s)\n",
2503 mti->mti_svname, logname, lmvname);
2505 libcfs_nid2str_r(mti->mti_nids[0], nidstr, sizeof(nidstr));
2506 rc = name_create(&nodeuuid, nidstr, "");
2509 rc = name_create(&mdcname, mti->mti_svname, "-mdc");
2512 rc = name_create(&mdcuuid, mdcname, "_UUID");
2515 rc = name_create(&lmvuuid, lmvname, "_UUID");
2519 rc = record_start_log(env, mgs, &llh, logname);
2522 rc = record_marker(env, llh, fsdb, CM_START, mti->mti_svname,
2526 for (i = 0; i < mti->mti_nid_count; i++) {
2527 CDEBUG(D_MGS, "add nid %s for mdt\n",
2528 libcfs_nid2str_r(mti->mti_nids[i],
2529 nidstr, sizeof(nidstr)));
2531 rc = record_add_uuid(env, llh, mti->mti_nids[i], nodeuuid);
2536 rc = record_attach(env, llh, mdcname, LUSTRE_MDC_NAME, lmvuuid);
2539 rc = record_setup(env, llh, mdcname, mti->mti_uuid, nodeuuid,
2543 rc = mgs_write_log_failnids(env, mti, llh, mdcname);
2546 snprintf(index, sizeof(index), "%d", mti->mti_stripe_index);
2547 rc = record_mdc_add(env, llh, lmvname, mdcuuid, mti->mti_uuid,
2551 rc = record_marker(env, llh, fsdb, CM_END, mti->mti_svname,
2556 record_end_log(env, &llh);
2558 name_destroy(&lmvuuid);
2559 name_destroy(&mdcuuid);
2560 name_destroy(&mdcname);
2561 name_destroy(&nodeuuid);
2565 static inline int name_create_lov(char **lovname, char *mdtname,
2566 struct fs_db *fsdb, int index)
2569 if (index == 0 && test_bit(FSDB_OSCNAME18, &fsdb->fsdb_flags))
2570 return name_create(lovname, fsdb->fsdb_name, "-mdtlov");
2572 return name_create(lovname, mdtname, "-mdtlov");
2575 static int name_create_mdt_and_lov(char **logname, char **lovname,
2576 struct fs_db *fsdb, int i)
2580 rc = name_create_mdt(logname, fsdb->fsdb_name, i);
2584 if (i == 0 && test_bit(FSDB_OSCNAME18, &fsdb->fsdb_flags))
2585 rc = name_create(lovname, fsdb->fsdb_name, "-mdtlov");
2587 rc = name_create(lovname, *logname, "-mdtlov");
2589 name_destroy(logname);
2595 static inline int name_create_mdt_osc(char **oscname, char *ostname,
2596 struct fs_db *fsdb, int i)
2600 if (i == 0 && test_bit(FSDB_OSCNAME18, &fsdb->fsdb_flags))
2601 sprintf(suffix, "-osc");
2603 sprintf(suffix, "-osc-MDT%04x", i);
2604 return name_create(oscname, ostname, suffix);
2607 /* add new mdc to already existent MDS */
2608 static int mgs_write_log_osp_to_mdt(const struct lu_env *env,
2609 struct mgs_device *mgs,
2611 struct mgs_target_info *mti,
2612 int mdt_index, char *logname)
2614 struct llog_handle *llh = NULL;
2615 char *nodeuuid = NULL;
2616 char *ospname = NULL;
2617 char *lovuuid = NULL;
2618 char *mdtuuid = NULL;
2619 char *svname = NULL;
2620 char *mdtname = NULL;
2621 char *lovname = NULL;
2623 char nidstr[LNET_NIDSTR_SIZE];
2627 if (mgs_log_is_empty(env, mgs, mti->mti_svname)) {
2628 CERROR("log is empty! Logical error\n");
2632 CDEBUG(D_MGS, "adding osp index %d to %s\n", mti->mti_stripe_index,
2635 rc = name_create_mdt(&mdtname, fsdb->fsdb_name, mti->mti_stripe_index);
2639 libcfs_nid2str_r(mti->mti_nids[0], nidstr, sizeof(nidstr));
2640 rc = name_create(&nodeuuid, nidstr, "");
2642 GOTO(out_destory, rc);
2644 rc = name_create(&svname, mdtname, "-osp");
2646 GOTO(out_destory, rc);
2648 sprintf(index_str, "-MDT%04x", mdt_index);
2649 rc = name_create(&ospname, svname, index_str);
2651 GOTO(out_destory, rc);
2653 rc = name_create_lov(&lovname, logname, fsdb, mdt_index);
2655 GOTO(out_destory, rc);
2657 rc = name_create(&lovuuid, lovname, "_UUID");
2659 GOTO(out_destory, rc);
2661 rc = name_create(&mdtuuid, mdtname, "_UUID");
2663 GOTO(out_destory, rc);
2665 rc = record_start_log(env, mgs, &llh, logname);
2667 GOTO(out_destory, rc);
2669 rc = record_marker(env, llh, fsdb, CM_START, mti->mti_svname,
2672 GOTO(out_destory, rc);
2674 for (i = 0; i < mti->mti_nid_count; i++) {
2675 CDEBUG(D_MGS, "add nid %s for mdt\n",
2676 libcfs_nid2str_r(mti->mti_nids[i],
2677 nidstr, sizeof(nidstr)));
2678 rc = record_add_uuid(env, llh, mti->mti_nids[i], nodeuuid);
2683 rc = record_attach(env, llh, ospname, LUSTRE_OSP_NAME, lovuuid);
2687 rc = record_setup(env, llh, ospname, mti->mti_uuid, nodeuuid,
2692 rc = mgs_write_log_failnids(env, mti, llh, ospname);
2696 /* Add mdc(osp) to lod */
2697 snprintf(index_str, sizeof(index_str), "%d", mti->mti_stripe_index);
2698 rc = record_base(env, llh, lovname, 0, LCFG_ADD_MDC, mti->mti_uuid,
2699 index_str, "1", NULL);
2703 rc = record_marker(env, llh, fsdb, CM_END, mti->mti_svname, "add osp");
2708 record_end_log(env, &llh);
2711 name_destroy(&mdtuuid);
2712 name_destroy(&lovuuid);
2713 name_destroy(&lovname);
2714 name_destroy(&ospname);
2715 name_destroy(&svname);
2716 name_destroy(&nodeuuid);
2717 name_destroy(&mdtname);
2721 static int mgs_write_log_mdt0(const struct lu_env *env,
2722 struct mgs_device *mgs,
2724 struct mgs_target_info *mti)
2726 char *log = mti->mti_svname;
2727 struct llog_handle *llh = NULL;
2728 struct obd_uuid *uuid;
2731 char *ptr = mti->mti_params;
2732 int rc = 0, failout = 0;
2735 OBD_ALLOC_PTR(uuid);
2739 if (class_find_param(ptr, PARAM_FAILMODE, &ptr) == 0)
2740 failout = (strncmp(ptr, "failout", 7) == 0);
2742 rc = name_create(&lovname, log, "-mdtlov");
2745 if (mgs_log_is_empty(env, mgs, log)) {
2746 rc = mgs_write_log_lov(env, mgs, fsdb, mti, log, lovname);
2751 sprintf(mdt_index, "%d", mti->mti_stripe_index);
2753 rc = record_start_log(env, mgs, &llh, log);
2757 /* add MDT itself */
2759 /* FIXME this whole fn should be a single journal transaction */
2760 sprintf(uuid->uuid, "%s_UUID", log);
2761 rc = record_marker(env, llh, fsdb, CM_START, log, "add mdt");
2764 rc = record_attach(env, llh, log, LUSTRE_MDT_NAME, uuid->uuid);
2767 rc = record_mount_opt(env, llh, log, lovname, NULL);
2770 rc = record_setup(env, llh, log, uuid->uuid, mdt_index, lovname,
2771 failout ? "n" : "f");
2774 rc = record_marker(env, llh, fsdb, CM_END, log, "add mdt");
2778 record_end_log(env, &llh);
2780 name_destroy(&lovname);
2786 /* envelope method for all layers log */
2787 static int mgs_write_log_mdt(const struct lu_env *env,
2788 struct mgs_device *mgs,
2790 struct mgs_target_info *mti)
2792 struct mgs_thread_info *mgi = mgs_env_info(env);
2793 struct llog_handle *llh = NULL;
2798 CDEBUG(D_MGS, "writing new mdt %s\n", mti->mti_svname);
2800 if (mti->mti_uuid[0] == '\0') {
2801 /* Make up our own uuid */
2802 snprintf(mti->mti_uuid, sizeof(mti->mti_uuid),
2803 "%s_UUID", mti->mti_svname);
2807 rc = mgs_write_log_mdt0(env, mgs, fsdb, mti);
2810 /* Append the mdt info to the client log */
2811 rc = name_create(&cliname, mti->mti_fsname, "-client");
2815 if (mgs_log_is_empty(env, mgs, cliname)) {
2816 /* Start client log */
2817 rc = mgs_write_log_lov(env, mgs, fsdb, mti, cliname,
2821 rc = mgs_write_log_lmv(env, mgs, fsdb, mti, cliname,
2828 #09 L add_uuid nid=uml1@tcp(0x20000c0a80201) 0: 1:uml1_UUID
2829 #10 L attach 0:MDC_uml1_mdsA_MNT_client 1:mdc 2:1d834_MNT_client_03f
2830 #11 L setup 0:MDC_uml1_mdsA_MNT_client 1:mdsA_UUID 2:uml1_UUID
2831 #12 L add_uuid nid=uml2@tcp(0x20000c0a80202) 0: 1:uml2_UUID
2832 #13 L add_conn 0:MDC_uml1_mdsA_MNT_client 1:uml2_UUID
2833 #14 L mount_option 0: 1:client 2:lov1 3:MDC_uml1_mdsA_MNT_client
2836 /* copy client info about lov/lmv */
2837 mgi->mgi_comp.comp_mti = mti;
2838 mgi->mgi_comp.comp_fsdb = fsdb;
2840 rc = mgs_steal_llog_for_mdt_from_client(env, mgs, cliname,
2844 rc = mgs_write_log_mdc_to_lmv(env, mgs, fsdb, mti, cliname,
2850 rc = record_start_log(env, mgs, &llh, cliname);
2854 rc = record_marker(env, llh, fsdb, CM_START, cliname, "mount opts");
2857 rc = record_mount_opt(env, llh, cliname, fsdb->fsdb_clilov,
2861 rc = record_marker(env, llh, fsdb, CM_END, cliname, "mount opts");
2865 /* for_all_existing_mdt except current one */
2866 for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
2867 if (i != mti->mti_stripe_index &&
2868 test_bit(i, fsdb->fsdb_mdt_index_map)) {
2871 rc = name_create_mdt(&logname, fsdb->fsdb_name, i);
2875 /* NB: If the log for the MDT is empty, it means
2876 * the MDT is only added to the index
2877 * map, and not being process yet, i.e. this
2878 * is an unregistered MDT, see mgs_write_log_target().
2879 * so we should skip it. Otherwise
2881 * 1. MGS get register request for MDT1 and MDT2.
2883 * 2. Then both MDT1 and MDT2 are added into
2884 * fsdb_mdt_index_map. (see mgs_set_index()).
2886 * 3. Then MDT1 get the lock of fsdb_mutex, then
2887 * generate the config log, here, it will regard MDT2
2888 * as an existent MDT, and generate "add osp" for
2889 * lustre-MDT0001-osp-MDT0002. Note: at the moment
2890 * MDT0002 config log is still empty, so it will
2891 * add "add osp" even before "lov setup", which
2892 * will definitly cause trouble.
2894 * 4. MDT1 registeration finished, fsdb_mutex is
2895 * released, then MDT2 get in, then in above
2896 * mgs_steal_llog_for_mdt_from_client(), it will
2897 * add another osp log for lustre-MDT0001-osp-MDT0002,
2898 * which will cause another trouble.*/
2899 if (!mgs_log_is_empty(env, mgs, logname))
2900 rc = mgs_write_log_osp_to_mdt(env, mgs, fsdb,
2903 name_destroy(&logname);
2909 record_end_log(env, &llh);
2911 name_destroy(&cliname);
2915 /* Add the ost info to the client/mdt lov */
2916 static int mgs_write_log_osc_to_lov(const struct lu_env *env,
2917 struct mgs_device *mgs, struct fs_db *fsdb,
2918 struct mgs_target_info *mti,
2919 char *logname, char *suffix, char *lovname,
2920 enum lustre_sec_part sec_part, int flags)
2922 struct llog_handle *llh = NULL;
2923 char *nodeuuid = NULL;
2924 char *oscname = NULL;
2925 char *oscuuid = NULL;
2926 char *lovuuid = NULL;
2927 char *svname = NULL;
2929 char nidstr[LNET_NIDSTR_SIZE];
2933 CDEBUG(D_INFO, "adding osc for %s to log %s\n",
2934 mti->mti_svname, logname);
2936 if (mgs_log_is_empty(env, mgs, logname)) {
2937 CERROR("log is empty! Logical error\n");
2941 libcfs_nid2str_r(mti->mti_nids[0], nidstr, sizeof(nidstr));
2942 rc = name_create(&nodeuuid, nidstr, "");
2945 rc = name_create(&svname, mti->mti_svname, "-osc");
2949 /* for the system upgraded from old 1.8, keep using the old osc naming
2950 * style for mdt, see name_create_mdt_osc(). LU-1257 */
2951 if (test_bit(FSDB_OSCNAME18, &fsdb->fsdb_flags))
2952 rc = name_create(&oscname, svname, "");
2954 rc = name_create(&oscname, svname, suffix);
2958 rc = name_create(&oscuuid, oscname, "_UUID");
2961 rc = name_create(&lovuuid, lovname, "_UUID");
2967 #03 L add_uuid nid=uml1@tcp(0x20000c0a80201) 0: 1:uml1_UUID
2969 #04 L add_uuid nid=1@elan(0x1000000000001) nal=90 0: 1:uml1_UUID
2970 #04 L attach 0:OSC_uml1_ost1_MNT_client 1:osc 2:89070_lov1_a41dff51a
2971 #05 L setup 0:OSC_uml1_ost1_MNT_client 1:ost1_UUID 2:uml1_UUID
2973 #06 L add_uuid nid=uml2@tcp(0x20000c0a80202) 0: 1:uml2_UUID
2974 #07 L add_conn 0:OSC_uml1_ost1_MNT_client 1:uml2_UUID
2975 #08 L lov_modify_tgts add 0:lov1 1:ost1_UUID 2(index):0 3(gen):1
2978 rc = record_start_log(env, mgs, &llh, logname);
2982 /* FIXME these should be a single journal transaction */
2983 rc = record_marker(env, llh, fsdb, CM_START | flags, mti->mti_svname,
2988 /* NB: don't change record order, because upon MDT steal OSC config
2989 * from client, it treats all nids before LCFG_SETUP as target nids
2990 * (multiple interfaces), while nids after as failover node nids.
2991 * See mgs_steal_client_llog_handler() LCFG_ADD_UUID.
2993 for (i = 0; i < mti->mti_nid_count; i++) {
2994 CDEBUG(D_MGS, "add nid %s\n",
2995 libcfs_nid2str_r(mti->mti_nids[i],
2996 nidstr, sizeof(nidstr)));
2997 rc = record_add_uuid(env, llh, mti->mti_nids[i], nodeuuid);
3001 rc = record_attach(env, llh, oscname, LUSTRE_OSC_NAME, lovuuid);
3004 rc = record_setup(env, llh, oscname, mti->mti_uuid, nodeuuid,
3008 rc = mgs_write_log_failnids(env, mti, llh, oscname);
3012 snprintf(index, sizeof(index), "%d", mti->mti_stripe_index);
3014 rc = record_lov_add(env, llh, lovname, mti->mti_uuid, index, "1");
3017 rc = record_marker(env, llh, fsdb, CM_END | flags, mti->mti_svname,
3022 record_end_log(env, &llh);
3024 name_destroy(&lovuuid);
3025 name_destroy(&oscuuid);
3026 name_destroy(&oscname);
3027 name_destroy(&svname);
3028 name_destroy(&nodeuuid);
3032 static int mgs_write_log_ost(const struct lu_env *env,
3033 struct mgs_device *mgs, struct fs_db *fsdb,
3034 struct mgs_target_info *mti)
3036 struct llog_handle *llh = NULL;
3037 char *logname, *lovname;
3038 char *ptr = mti->mti_params;
3039 int rc, flags = 0, failout = 0, i;
3042 CDEBUG(D_MGS, "writing new ost %s\n", mti->mti_svname);
3044 /* The ost startup log */
3046 /* If the ost log already exists, that means that someone reformatted
3047 the ost and it called target_add again. */
3048 if (!mgs_log_is_empty(env, mgs, mti->mti_svname)) {
3049 LCONSOLE_ERROR_MSG(0x141, "The config log for %s already "
3050 "exists, yet the server claims it never "
3051 "registered. It may have been reformatted, "
3052 "or the index changed. writeconf the MDT to "
3053 "regenerate all logs.\n", mti->mti_svname);
3058 attach obdfilter ost1 ost1_UUID
3059 setup /dev/loop2 ldiskfs f|n errors=remount-ro,user_xattr
3061 if (class_find_param(ptr, PARAM_FAILMODE, &ptr) == 0)
3062 failout = (strncmp(ptr, "failout", 7) == 0);
3063 rc = record_start_log(env, mgs, &llh, mti->mti_svname);
3066 /* FIXME these should be a single journal transaction */
3067 rc = record_marker(env, llh, fsdb, CM_START, mti->mti_svname,"add ost");
3070 if (*mti->mti_uuid == '\0')
3071 snprintf(mti->mti_uuid, sizeof(mti->mti_uuid),
3072 "%s_UUID", mti->mti_svname);
3073 rc = record_attach(env, llh, mti->mti_svname,
3074 "obdfilter"/*LUSTRE_OST_NAME*/, mti->mti_uuid);
3077 rc = record_setup(env, llh, mti->mti_svname,
3078 "dev"/*ignored*/, "type"/*ignored*/,
3079 failout ? "n" : "f", NULL/*options*/);
3082 rc = record_marker(env, llh, fsdb, CM_END, mti->mti_svname, "add ost");
3086 record_end_log(env, &llh);
3089 /* We also have to update the other logs where this osc is part of
3092 if (test_bit(FSDB_OLDLOG14, &fsdb->fsdb_flags)) {
3093 /* If we're upgrading, the old mdt log already has our
3094 entry. Let's do a fake one for fun. */
3095 /* Note that we can't add any new failnids, since we don't
3096 know the old osc names. */
3097 flags = CM_SKIP | CM_UPGRADE146;
3099 } else if ((mti->mti_flags & LDD_F_UPDATE) != LDD_F_UPDATE) {
3100 /* If the update flag isn't set, don't update client/mdt
3103 LCONSOLE_WARN("Client log for %s was not updated; writeconf "
3104 "the MDT first to regenerate it.\n",
3108 /* Add ost to all MDT lov defs */
3109 for (i = 0; i < INDEX_MAP_SIZE * 8; i++){
3110 if (test_bit(i, fsdb->fsdb_mdt_index_map)) {
3113 rc = name_create_mdt_and_lov(&logname, &lovname, fsdb,
3118 snprintf(mdt_index, sizeof(mdt_index), "-MDT%04x", i);
3119 rc = mgs_write_log_osc_to_lov(env, mgs, fsdb, mti,
3121 lovname, LUSTRE_SP_MDT,
3123 name_destroy(&logname);
3124 name_destroy(&lovname);
3130 /* Append ost info to the client log */
3131 rc = name_create(&logname, mti->mti_fsname, "-client");
3134 if (mgs_log_is_empty(env, mgs, logname)) {
3135 /* Start client log */
3136 rc = mgs_write_log_lov(env, mgs, fsdb, mti, logname,
3140 rc = mgs_write_log_lmv(env, mgs, fsdb, mti, logname,
3145 rc = mgs_write_log_osc_to_lov(env, mgs, fsdb, mti, logname, "",
3146 fsdb->fsdb_clilov, LUSTRE_SP_CLI, flags);
3148 name_destroy(&logname);
3152 static __inline__ int mgs_param_empty(char *ptr)
3156 if ((tmp = strchr(ptr, '=')) && (*(++tmp) == '\0'))
3161 static int mgs_write_log_failnid_internal(const struct lu_env *env,
3162 struct mgs_device *mgs,
3164 struct mgs_target_info *mti,
3165 char *logname, char *cliname)
3168 struct llog_handle *llh = NULL;
3170 if (mgs_param_empty(mti->mti_params)) {
3171 /* Remove _all_ failnids */
3172 rc = mgs_modify(env, mgs, fsdb, mti, logname,
3173 mti->mti_svname, "add failnid", CM_SKIP);
3174 return rc < 0 ? rc : 0;
3177 /* Otherwise failover nids are additive */
3178 rc = record_start_log(env, mgs, &llh, logname);
3181 /* FIXME this should be a single journal transaction */
3182 rc = record_marker(env, llh, fsdb, CM_START, mti->mti_svname,
3186 rc = mgs_write_log_failnids(env, mti, llh, cliname);
3189 rc = record_marker(env, llh, fsdb, CM_END,
3190 mti->mti_svname, "add failnid");
3192 record_end_log(env, &llh);
3197 /* Add additional failnids to an existing log.
3198 The mdc/osc must have been added to logs first */
3199 /* tcp nids must be in dotted-quad ascii -
3200 we can't resolve hostnames from the kernel. */
3201 static int mgs_write_log_add_failnid(const struct lu_env *env,
3202 struct mgs_device *mgs,
3204 struct mgs_target_info *mti)
3206 char *logname, *cliname;
3210 /* FIXME we currently can't erase the failnids
3211 * given when a target first registers, since they aren't part of
3212 * an "add uuid" stanza
3215 /* Verify that we know about this target */
3216 if (mgs_log_is_empty(env, mgs, mti->mti_svname)) {
3217 LCONSOLE_ERROR_MSG(0x142, "The target %s has not registered "
3218 "yet. It must be started before failnids "
3219 "can be added.\n", mti->mti_svname);
3223 /* Create mdc/osc client name (e.g. lustre-OST0001-osc) */
3224 if (mti->mti_flags & LDD_F_SV_TYPE_MDT) {
3225 rc = name_create(&cliname, mti->mti_svname, "-mdc");
3226 } else if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
3227 rc = name_create(&cliname, mti->mti_svname, "-osc");
3234 /* Add failover nids to the client log */
3235 rc = name_create(&logname, mti->mti_fsname, "-client");
3237 name_destroy(&cliname);
3241 rc = mgs_write_log_failnid_internal(env, mgs, fsdb,mti,logname,cliname);
3242 name_destroy(&logname);
3243 name_destroy(&cliname);
3247 if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
3248 /* Add OST failover nids to the MDT logs as well */
3251 for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
3252 if (!test_bit(i, fsdb->fsdb_mdt_index_map))
3254 rc = name_create_mdt(&logname, mti->mti_fsname, i);
3257 rc = name_create_mdt_osc(&cliname, mti->mti_svname,
3260 name_destroy(&logname);
3263 rc = mgs_write_log_failnid_internal(env, mgs, fsdb,
3266 name_destroy(&cliname);
3267 name_destroy(&logname);
3276 static int mgs_wlp_lcfg(const struct lu_env *env,
3277 struct mgs_device *mgs, struct fs_db *fsdb,
3278 struct mgs_target_info *mti,
3279 char *logname, struct lustre_cfg_bufs *bufs,
3280 char *tgtname, char *ptr)
3282 char comment[MTI_NAME_MAXLEN];
3284 struct llog_cfg_rec *lcr;
3287 /* Erase any old settings of this same parameter */
3288 strlcpy(comment, ptr, sizeof(comment));
3289 /* But don't try to match the value. */
3290 tmp = strchr(comment, '=');
3293 /* FIXME we should skip settings that are the same as old values */
3294 rc = mgs_modify(env, mgs, fsdb, mti, logname, tgtname, comment,CM_SKIP);
3297 del = mgs_param_empty(ptr);
3299 LCONSOLE_INFO("%s parameter %s.%s in log %s\n", del ? "Disabling" : rc ?
3300 "Setting" : "Modifying", tgtname, comment, logname);
3302 /* mgs_modify() will return 1 if nothing had to be done */
3308 lustre_cfg_bufs_reset(bufs, tgtname);
3309 lustre_cfg_bufs_set_string(bufs, 1, ptr);
3310 if (mti->mti_flags & LDD_F_PARAM2)
3311 lustre_cfg_bufs_set_string(bufs, 2, LCTL_UPCALL);
3313 lcr = lustre_cfg_rec_new((mti->mti_flags & LDD_F_PARAM2) ?
3314 LCFG_SET_PARAM : LCFG_PARAM, bufs);
3318 rc = mgs_write_log_direct(env, mgs, fsdb, logname, lcr, tgtname,
3320 lustre_cfg_rec_free(lcr);
3324 /* write global variable settings into log */
3325 static int mgs_write_log_sys(const struct lu_env *env,
3326 struct mgs_device *mgs, struct fs_db *fsdb,
3327 struct mgs_target_info *mti, char *sys, char *ptr)
3329 struct mgs_thread_info *mgi = mgs_env_info(env);
3330 struct lustre_cfg *lcfg;
3331 struct llog_cfg_rec *lcr;
3333 int rc, cmd, convert = 1;
3335 if (class_match_param(ptr, PARAM_TIMEOUT, &tmp) == 0) {
3336 cmd = LCFG_SET_TIMEOUT;
3337 } else if (class_match_param(ptr, PARAM_LDLM_TIMEOUT, &tmp) == 0) {
3338 cmd = LCFG_SET_LDLM_TIMEOUT;
3339 /* Check for known params here so we can return error to lctl */
3340 } else if ((class_match_param(ptr, PARAM_AT_MIN, &tmp) == 0) ||
3341 (class_match_param(ptr, PARAM_AT_MAX, &tmp) == 0) ||
3342 (class_match_param(ptr, PARAM_AT_EXTRA, &tmp) == 0) ||
3343 (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, &tmp) == 0) ||
3344 (class_match_param(ptr, PARAM_AT_HISTORY, &tmp) == 0)) {
3346 } else if (class_match_param(ptr, PARAM_JOBID_VAR, &tmp) == 0) {
3347 convert = 0; /* Don't convert string value to integer */
3353 if (mgs_param_empty(ptr))
3354 CDEBUG(D_MGS, "global '%s' removed\n", sys);
3356 CDEBUG(D_MGS, "global '%s' val=%s\n", sys, tmp);
3358 lustre_cfg_bufs_reset(&mgi->mgi_bufs, NULL);
3359 lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 1, sys);
3360 if (!convert && *tmp != '\0')
3361 lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 2, tmp);
3362 lcr = lustre_cfg_rec_new(cmd, &mgi->mgi_bufs);
3366 lcfg = &lcr->lcr_cfg;
3368 rc = kstrtouint(tmp, 0, &lcfg->lcfg_num);
3370 GOTO(out_rec_free, rc);
3375 /* truncate the comment to the parameter name */
3379 /* modify all servers and clients */
3380 rc = mgs_write_log_direct_all(env, mgs, fsdb, mti,
3381 *tmp == '\0' ? NULL : lcr,
3382 mti->mti_fsname, sys, 0);
3383 if (rc == 0 && *tmp != '\0') {
3385 case LCFG_SET_TIMEOUT:
3386 if (!obd_timeout_set || lcfg->lcfg_num > obd_timeout)
3387 class_process_config(lcfg);
3389 case LCFG_SET_LDLM_TIMEOUT:
3390 if (!ldlm_timeout_set || lcfg->lcfg_num > ldlm_timeout)
3391 class_process_config(lcfg);
3399 lustre_cfg_rec_free(lcr);
3403 /* write quota settings into log */
3404 static int mgs_write_log_quota(const struct lu_env *env, struct mgs_device *mgs,
3405 struct fs_db *fsdb, struct mgs_target_info *mti,
3406 char *quota, char *ptr)
3408 struct mgs_thread_info *mgi = mgs_env_info(env);
3409 struct llog_cfg_rec *lcr;
3412 int rc, cmd = LCFG_PARAM;
3414 /* support only 'meta' and 'data' pools so far */
3415 if (class_match_param(ptr, QUOTA_METAPOOL_NAME, &tmp) != 0 &&
3416 class_match_param(ptr, QUOTA_DATAPOOL_NAME, &tmp) != 0) {
3417 CERROR("parameter quota.%s isn't supported (only quota.mdt "
3418 "& quota.ost are)\n", ptr);
3423 CDEBUG(D_MGS, "global '%s' removed\n", quota);
3425 CDEBUG(D_MGS, "global '%s'\n", quota);
3427 if (strchr(tmp, 'u') == NULL && strchr(tmp, 'g') == NULL &&
3428 strchr(tmp, 'p') == NULL &&
3429 strcmp(tmp, "none") != 0) {
3430 CERROR("enable option(%s) isn't supported\n", tmp);
3435 lustre_cfg_bufs_reset(&mgi->mgi_bufs, mti->mti_fsname);
3436 lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 1, quota);
3437 lcr = lustre_cfg_rec_new(cmd, &mgi->mgi_bufs);
3441 /* truncate the comment to the parameter name */
3446 /* XXX we duplicated quota enable information in all server
3447 * config logs, it should be moved to a separate config
3448 * log once we cleanup the config log for global param. */
3449 /* modify all servers */
3450 rc = mgs_write_log_direct_all(env, mgs, fsdb, mti,
3451 *tmp == '\0' ? NULL : lcr,
3452 mti->mti_fsname, quota, 1);
3454 lustre_cfg_rec_free(lcr);
3455 return rc < 0 ? rc : 0;
3458 static int mgs_srpc_set_param_disk(const struct lu_env *env,
3459 struct mgs_device *mgs,
3461 struct mgs_target_info *mti,
3464 struct mgs_thread_info *mgi = mgs_env_info(env);
3465 struct llog_cfg_rec *lcr;
3466 struct llog_handle *llh = NULL;
3468 char *comment, *ptr;
3474 ptr = strchr(param, '=');
3475 LASSERT(ptr != NULL);
3478 OBD_ALLOC(comment, len + 1);
3479 if (comment == NULL)
3481 strncpy(comment, param, len);
3482 comment[len] = '\0';
3485 lustre_cfg_bufs_reset(&mgi->mgi_bufs, mti->mti_svname);
3486 lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 1, param);
3487 lcr = lustre_cfg_rec_new(LCFG_SPTLRPC_CONF, &mgi->mgi_bufs);
3489 GOTO(out_comment, rc = -ENOMEM);
3491 /* construct log name */
3492 rc = name_create(&logname, mti->mti_fsname, "-sptlrpc");
3496 if (mgs_log_is_empty(env, mgs, logname)) {
3497 rc = record_start_log(env, mgs, &llh, logname);
3500 record_end_log(env, &llh);
3503 /* obsolete old one */
3504 rc = mgs_modify(env, mgs, fsdb, mti, logname, mti->mti_svname,
3508 /* write the new one */
3509 rc = mgs_write_log_direct(env, mgs, fsdb, logname, lcr,
3510 mti->mti_svname, comment);
3512 CERROR("%s: error writing log %s: rc = %d\n",
3513 mgs->mgs_obd->obd_name, logname, rc);
3515 name_destroy(&logname);
3517 lustre_cfg_rec_free(lcr);
3519 OBD_FREE(comment, len + 1);
3523 static int mgs_srpc_set_param_udesc_mem(struct fs_db *fsdb,
3528 /* disable the adjustable udesc parameter for now, i.e. use default
3529 * setting that client always ship udesc to MDT if possible. to enable
3530 * it simply remove the following line */
3533 ptr = strchr(param, '=');
3538 if (strcmp(param, PARAM_SRPC_UDESC))
3541 if (strcmp(ptr, "yes") == 0) {
3542 set_bit(FSDB_UDESC, &fsdb->fsdb_flags);
3543 CWARN("Enable user descriptor shipping from client to MDT\n");
3544 } else if (strcmp(ptr, "no") == 0) {
3545 clear_bit(FSDB_UDESC, &fsdb->fsdb_flags);
3546 CWARN("Disable user descriptor shipping from client to MDT\n");
3554 CERROR("Invalid param: %s\n", param);
3558 static int mgs_srpc_set_param_mem(struct fs_db *fsdb,
3562 struct sptlrpc_rule rule;
3563 struct sptlrpc_rule_set *rset;
3567 if (strncmp(param, PARAM_SRPC, sizeof(PARAM_SRPC) - 1) != 0) {
3568 CERROR("Invalid sptlrpc parameter: %s\n", param);
3572 if (strncmp(param, PARAM_SRPC_UDESC,
3573 sizeof(PARAM_SRPC_UDESC) - 1) == 0) {
3574 RETURN(mgs_srpc_set_param_udesc_mem(fsdb, param));
3577 if (strncmp(param, PARAM_SRPC_FLVR, sizeof(PARAM_SRPC_FLVR) - 1) != 0) {
3578 CERROR("Invalid sptlrpc flavor parameter: %s\n", param);
3582 param += sizeof(PARAM_SRPC_FLVR) - 1;
3584 rc = sptlrpc_parse_rule(param, &rule);
3588 /* mgs rules implies must be mgc->mgs */
3589 if (test_bit(FSDB_MGS_SELF, &fsdb->fsdb_flags)) {
3590 if ((rule.sr_from != LUSTRE_SP_MGC &&
3591 rule.sr_from != LUSTRE_SP_ANY) ||
3592 (rule.sr_to != LUSTRE_SP_MGS &&
3593 rule.sr_to != LUSTRE_SP_ANY))
3597 /* preapre room for this coming rule. svcname format should be:
3598 * - fsname: general rule
3599 * - fsname-tgtname: target-specific rule
3601 if (strchr(svname, '-')) {
3602 struct mgs_tgt_srpc_conf *tgtconf;
3605 for (tgtconf = fsdb->fsdb_srpc_tgt; tgtconf != NULL;
3606 tgtconf = tgtconf->mtsc_next) {
3607 if (!strcmp(tgtconf->mtsc_tgt, svname)) {
3616 OBD_ALLOC_PTR(tgtconf);
3617 if (tgtconf == NULL)
3620 name_len = strlen(svname);
3622 OBD_ALLOC(tgtconf->mtsc_tgt, name_len + 1);
3623 if (tgtconf->mtsc_tgt == NULL) {
3624 OBD_FREE_PTR(tgtconf);
3627 memcpy(tgtconf->mtsc_tgt, svname, name_len);
3629 tgtconf->mtsc_next = fsdb->fsdb_srpc_tgt;
3630 fsdb->fsdb_srpc_tgt = tgtconf;
3633 rset = &tgtconf->mtsc_rset;
3634 } else if (strcmp(svname, MGSSELF_NAME) == 0) {
3635 /* put _mgs related srpc rule directly in mgs ruleset */
3636 rset = &fsdb->fsdb_mgs->mgs_lut.lut_sptlrpc_rset;
3638 rset = &fsdb->fsdb_srpc_gen;
3641 rc = sptlrpc_rule_set_merge(rset, &rule);
3646 static int mgs_srpc_set_param(const struct lu_env *env,
3647 struct mgs_device *mgs,
3649 struct mgs_target_info *mti,
3659 /* keep a copy of original param, which could be destroied
3661 copy_size = strlen(param) + 1;
3662 OBD_ALLOC(copy, copy_size);
3665 memcpy(copy, param, copy_size);
3667 rc = mgs_srpc_set_param_mem(fsdb, mti->mti_svname, param);
3671 /* previous steps guaranteed the syntax is correct */
3672 rc = mgs_srpc_set_param_disk(env, mgs, fsdb, mti, copy);
3676 if (test_bit(FSDB_MGS_SELF, &fsdb->fsdb_flags)) {
3678 * for mgs rules, make them effective immediately.
3680 LASSERT(fsdb->fsdb_srpc_tgt == NULL);
3681 sptlrpc_target_update_exp_flavor(mgs->mgs_obd,
3682 &fsdb->fsdb_srpc_gen);
3686 OBD_FREE(copy, copy_size);
3690 struct mgs_srpc_read_data {
3691 struct fs_db *msrd_fsdb;
3695 static int mgs_srpc_read_handler(const struct lu_env *env,
3696 struct llog_handle *llh,
3697 struct llog_rec_hdr *rec, void *data)
3699 struct mgs_srpc_read_data *msrd = data;
3700 struct cfg_marker *marker;
3701 struct lustre_cfg *lcfg = REC_DATA(rec);
3702 char *svname, *param;
3706 if (rec->lrh_type != OBD_CFG_REC) {
3707 CERROR("unhandled lrh_type: %#x\n", rec->lrh_type);
3711 cfg_len = REC_DATA_LEN(rec);
3713 rc = lustre_cfg_sanity_check(lcfg, cfg_len);
3715 CERROR("Insane cfg\n");
3719 if (lcfg->lcfg_command == LCFG_MARKER) {
3720 marker = lustre_cfg_buf(lcfg, 1);
3722 if (marker->cm_flags & CM_START &&
3723 marker->cm_flags & CM_SKIP)
3724 msrd->msrd_skip = 1;
3725 if (marker->cm_flags & CM_END)
3726 msrd->msrd_skip = 0;
3731 if (msrd->msrd_skip)
3734 if (lcfg->lcfg_command != LCFG_SPTLRPC_CONF) {
3735 CERROR("invalid command (%x)\n", lcfg->lcfg_command);
3739 svname = lustre_cfg_string(lcfg, 0);
3740 if (svname == NULL) {
3741 CERROR("svname is empty\n");
3745 param = lustre_cfg_string(lcfg, 1);
3746 if (param == NULL) {
3747 CERROR("param is empty\n");
3751 rc = mgs_srpc_set_param_mem(msrd->msrd_fsdb, svname, param);
3753 CERROR("read sptlrpc record error (%d): %s\n", rc, param);
3758 int mgs_get_fsdb_srpc_from_llog(const struct lu_env *env,
3759 struct mgs_device *mgs,
3762 struct llog_handle *llh = NULL;
3763 struct llog_ctxt *ctxt;
3765 struct mgs_srpc_read_data msrd;
3769 /* construct log name */
3770 rc = name_create(&logname, fsdb->fsdb_name, "-sptlrpc");
3774 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
3775 LASSERT(ctxt != NULL);
3777 if (mgs_log_is_empty(env, mgs, logname))
3780 rc = llog_open(env, ctxt, &llh, NULL, logname,
3788 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
3790 GOTO(out_close, rc);
3792 if (llog_get_size(llh) <= 1)
3793 GOTO(out_close, rc = 0);
3795 msrd.msrd_fsdb = fsdb;
3798 rc = llog_process(env, llh, mgs_srpc_read_handler, (void *)&msrd,
3802 llog_close(env, llh);
3804 llog_ctxt_put(ctxt);
3805 name_destroy(&logname);
3808 CERROR("failed to read sptlrpc config database: %d\n", rc);
3812 static int mgs_write_log_param2(const struct lu_env *env,
3813 struct mgs_device *mgs,
3815 struct mgs_target_info *mti, char *ptr)
3817 struct lustre_cfg_bufs bufs;
3821 CDEBUG(D_MGS, "next param '%s'\n", ptr);
3823 /* PARAM_MGSNODE and PARAM_NETWORK are set only when formating
3824 * or during the inital mount. It can never change after that.
3826 if (!class_match_param(ptr, PARAM_MGSNODE, NULL) ||
3827 !class_match_param(ptr, PARAM_NETWORK, NULL)) {
3832 /* Processed in mgs_write_log_ost. Another value that can't
3833 * be changed by lctl set_param -P.
3835 if (!class_match_param(ptr, PARAM_FAILMODE, NULL)) {
3836 LCONSOLE_ERROR_MSG(0x169,
3837 "%s can only be changed with tunefs.lustre and --writeconf\n",
3843 /* FIXME !!! Support for sptlrpc is incomplete. Currently the change
3844 * doesn't transmit to the client. See LU-7183.
3846 if (!class_match_param(ptr, PARAM_SRPC, NULL)) {
3847 rc = mgs_srpc_set_param(env, mgs, fsdb, mti, ptr);
3851 /* Can't use class_match_param since ptr doesn't start with
3852 * PARAM_FAILNODE. So we look for PARAM_FAILNODE contained in ptr.
3854 if (strstr(ptr, PARAM_FAILNODE)) {
3855 /* Add a failover nidlist. We already processed failovers
3856 * params for new targets in mgs_write_log_target.
3860 /* can't use wildcards with failover.node */
3861 if (strchr(ptr, '*')) {
3866 param = strstr(ptr, PARAM_FAILNODE);
3867 if (strlcpy(mti->mti_params, param, sizeof(mti->mti_params)) >=
3868 sizeof(mti->mti_params)) {
3873 CDEBUG(D_MGS, "Adding failnode with param %s\n",
3875 rc = mgs_write_log_add_failnid(env, mgs, fsdb, mti);
3879 rc = mgs_wlp_lcfg(env, mgs, fsdb, mti, PARAMS_FILENAME, &bufs,
3880 mti->mti_svname, ptr);
3885 /* Permanent settings of all parameters by writing into the appropriate
3886 * configuration logs.
3887 * A parameter with null value ("<param>='\0'") means to erase it out of
3890 static int mgs_write_log_param(const struct lu_env *env,
3891 struct mgs_device *mgs, struct fs_db *fsdb,
3892 struct mgs_target_info *mti, char *ptr)
3894 struct mgs_thread_info *mgi = mgs_env_info(env);
3900 /* For various parameter settings, we have to figure out which logs
3901 care about them (e.g. both mdt and client for lov settings) */
3902 CDEBUG(D_MGS, "next param '%s'\n", ptr);
3904 /* The params are stored in MOUNT_DATA_FILE and modified via
3905 tunefs.lustre, or set using lctl conf_param */
3907 /* Processed in lustre_start_mgc */
3908 if (class_match_param(ptr, PARAM_MGSNODE, NULL) == 0)
3911 /* Processed in ost/mdt */
3912 if (class_match_param(ptr, PARAM_NETWORK, NULL) == 0)
3915 /* Processed in mgs_write_log_ost */
3916 if (class_match_param(ptr, PARAM_FAILMODE, NULL) == 0) {
3917 if (mti->mti_flags & LDD_F_PARAM) {
3918 LCONSOLE_ERROR_MSG(0x169, "%s can only be "
3919 "changed with tunefs.lustre"
3920 "and --writeconf\n", ptr);
3926 if (class_match_param(ptr, PARAM_SRPC, NULL) == 0) {
3927 rc = mgs_srpc_set_param(env, mgs, fsdb, mti, ptr);
3931 if (class_match_param(ptr, PARAM_FAILNODE, NULL) == 0) {
3932 /* Add a failover nidlist */
3934 /* We already processed failovers params for new
3935 targets in mgs_write_log_target */
3936 if (mti->mti_flags & LDD_F_PARAM) {
3937 CDEBUG(D_MGS, "Adding failnode\n");
3938 rc = mgs_write_log_add_failnid(env, mgs, fsdb, mti);
3943 if (class_match_param(ptr, PARAM_SYS, &tmp) == 0) {
3944 rc = mgs_write_log_sys(env, mgs, fsdb, mti, ptr, tmp);
3948 if (class_match_param(ptr, PARAM_QUOTA, &tmp) == 0) {
3949 rc = mgs_write_log_quota(env, mgs, fsdb, mti, ptr, tmp);
3953 if (class_match_param(ptr, PARAM_OSC PARAM_ACTIVE, &tmp) == 0 ||
3954 class_match_param(ptr, PARAM_MDC PARAM_ACTIVE, &tmp) == 0) {
3955 /* active=0 means off, anything else means on */
3956 int flag = (*tmp == '0') ? CM_EXCLUDE : 0;
3957 bool deactive_osc = memcmp(ptr, PARAM_OSC PARAM_ACTIVE,
3958 strlen(PARAM_OSC PARAM_ACTIVE)) == 0;
3961 if (!deactive_osc) {
3964 rc = server_name2index(mti->mti_svname, &index, NULL);
3969 LCONSOLE_ERROR_MSG(0x144, "%s: MDC0 can not be"
3970 " (de)activated.\n",
3972 GOTO(end, rc = -EPERM);
3976 LCONSOLE_WARN("Permanently %sactivating %s\n",
3977 flag ? "de" : "re", mti->mti_svname);
3979 rc = name_create(&logname, mti->mti_fsname, "-client");
3982 rc = mgs_modify(env, mgs, fsdb, mti, logname,
3984 deactive_osc ? "add osc" : "add mdc", flag);
3985 name_destroy(&logname);
3990 /* Add to all MDT logs for DNE */
3991 for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
3992 if (!test_bit(i, fsdb->fsdb_mdt_index_map))
3994 rc = name_create_mdt(&logname, mti->mti_fsname, i);
3997 rc = mgs_modify(env, mgs, fsdb, mti, logname,
3999 deactive_osc ? "add osc" : "add osp",
4001 name_destroy(&logname);
4007 LCONSOLE_ERROR_MSG(0x145, "Couldn't find %s in"
4008 "log (%d). No permanent "
4009 "changes were made to the "
4011 mti->mti_svname, rc);
4012 if (test_bit(FSDB_OLDLOG14, &fsdb->fsdb_flags))
4013 LCONSOLE_ERROR_MSG(0x146, "This may be"
4018 "update the logs.\n");
4021 /* Fall through to osc/mdc proc for deactivating live
4022 OSC/OSP on running MDT / clients. */
4024 /* Below here, let obd's XXX_process_config methods handle it */
4026 /* All lov. in proc */
4027 if (class_match_param(ptr, PARAM_LOV, NULL) == 0) {
4030 CDEBUG(D_MGS, "lov param %s\n", ptr);
4031 if (!(mti->mti_flags & LDD_F_SV_TYPE_MDT)) {
4032 LCONSOLE_ERROR_MSG(0x147, "LOV params must be "
4033 "set on the MDT, not %s. "
4040 if (mgs_log_is_empty(env, mgs, mti->mti_svname))
4041 GOTO(end, rc = -ENODEV);
4043 rc = name_create_mdt_and_lov(&logname, &mdtlovname, fsdb,
4044 mti->mti_stripe_index);
4047 rc = mgs_wlp_lcfg(env, mgs, fsdb, mti, mti->mti_svname,
4048 &mgi->mgi_bufs, mdtlovname, ptr);
4049 name_destroy(&logname);
4050 name_destroy(&mdtlovname);
4055 rc = name_create(&logname, mti->mti_fsname, "-client");
4058 rc = mgs_wlp_lcfg(env, mgs, fsdb, mti, logname, &mgi->mgi_bufs,
4059 fsdb->fsdb_clilov, ptr);
4060 name_destroy(&logname);
4064 /* All osc., mdc., llite. params in proc */
4065 if ((class_match_param(ptr, PARAM_OSC, NULL) == 0) ||
4066 (class_match_param(ptr, PARAM_MDC, NULL) == 0) ||
4067 (class_match_param(ptr, PARAM_LLITE, NULL) == 0)) {
4070 if (test_bit(FSDB_OLDLOG14, &fsdb->fsdb_flags)) {
4071 LCONSOLE_ERROR_MSG(0x148, "Upgraded client logs for %s"
4072 " cannot be modified. Consider"
4073 " updating the configuration with"
4076 GOTO(end, rc = -EINVAL);
4078 if (memcmp(ptr, PARAM_LLITE, strlen(PARAM_LLITE)) == 0) {
4079 rc = name_create(&cname, mti->mti_fsname, "-client");
4080 /* Add the client type to match the obdname in
4081 class_config_llog_handler */
4082 } else if (mti->mti_flags & LDD_F_SV_TYPE_MDT) {
4083 rc = name_create(&cname, mti->mti_svname, "-mdc");
4084 } else if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
4085 rc = name_create(&cname, mti->mti_svname, "-osc");
4087 GOTO(end, rc = -EINVAL);
4092 /* Forbid direct update of llite root squash parameters.
4093 * These parameters are indirectly set via the MDT settings.
4095 if ((class_match_param(ptr, PARAM_LLITE, &tmp) == 0) &&
4096 ((memcmp(tmp, "root_squash=", 12) == 0) ||
4097 (memcmp(tmp, "nosquash_nids=", 14) == 0))) {
4098 LCONSOLE_ERROR("%s: root squash parameters can only "
4099 "be updated through MDT component\n",
4101 name_destroy(&cname);
4102 GOTO(end, rc = -EINVAL);
4105 CDEBUG(D_MGS, "%.3s param %s\n", ptr, ptr + 4);
4108 rc = name_create(&logname, mti->mti_fsname, "-client");
4110 name_destroy(&cname);
4113 rc = mgs_wlp_lcfg(env, mgs, fsdb, mti, logname, &mgi->mgi_bufs,
4116 /* osc params affect the MDT as well */
4117 if (!rc && (mti->mti_flags & LDD_F_SV_TYPE_OST)) {
4120 for (i = 0; i < INDEX_MAP_SIZE * 8; i++){
4121 if (!test_bit(i, fsdb->fsdb_mdt_index_map))
4123 name_destroy(&cname);
4124 rc = name_create_mdt_osc(&cname, mti->mti_svname,
4126 name_destroy(&logname);
4129 rc = name_create_mdt(&logname,
4130 mti->mti_fsname, i);
4133 if (!mgs_log_is_empty(env, mgs, logname)) {
4134 rc = mgs_wlp_lcfg(env, mgs, fsdb,
4144 /* For mdc activate/deactivate, it affects OSP on MDT as well */
4145 if (class_match_param(ptr, PARAM_MDC PARAM_ACTIVE, &tmp) == 0 &&
4148 char *lodname = NULL;
4149 char *param_str = NULL;
4153 /* replace mdc with osp */
4154 memcpy(ptr, PARAM_OSP, strlen(PARAM_OSP));
4155 rc = server_name2index(mti->mti_svname, &index, NULL);
4157 memcpy(ptr, PARAM_MDC, strlen(PARAM_MDC));
4161 for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
4162 if (!test_bit(i, fsdb->fsdb_mdt_index_map))
4168 name_destroy(&logname);
4169 rc = name_create_mdt(&logname, mti->mti_fsname,
4174 if (mgs_log_is_empty(env, mgs, logname))
4177 snprintf(suffix, sizeof(suffix), "-osp-MDT%04x",
4179 name_destroy(&cname);
4180 rc = name_create(&cname, mti->mti_svname,
4185 rc = mgs_wlp_lcfg(env, mgs, fsdb, mti, logname,
4186 &mgi->mgi_bufs, cname, ptr);
4190 /* Add configuration log for noitfying LOD
4191 * to active/deactive the OSP. */
4192 name_destroy(¶m_str);
4193 rc = name_create(¶m_str, cname,
4194 (*tmp == '0') ? ".active=0" :
4199 name_destroy(&lodname);
4200 rc = name_create(&lodname, logname, "-mdtlov");
4204 rc = mgs_wlp_lcfg(env, mgs, fsdb, mti, logname,
4205 &mgi->mgi_bufs, lodname,
4210 memcpy(ptr, PARAM_MDC, strlen(PARAM_MDC));
4211 name_destroy(&lodname);
4212 name_destroy(¶m_str);
4215 name_destroy(&logname);
4216 name_destroy(&cname);
4220 /* All mdt. params in proc */
4221 if (class_match_param(ptr, PARAM_MDT, &tmp) == 0) {
4225 CDEBUG(D_MGS, "%.3s param %s\n", ptr, ptr + 4);
4226 if (strncmp(mti->mti_svname, mti->mti_fsname,
4227 MTI_NAME_MAXLEN) == 0)
4228 /* device is unspecified completely? */
4229 rc = LDD_F_SV_TYPE_MDT | LDD_F_SV_ALL;
4231 rc = server_name2index(mti->mti_svname, &idx, NULL);
4234 if ((rc & LDD_F_SV_TYPE_MDT) == 0)
4236 if (rc & LDD_F_SV_ALL) {
4237 for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
4239 fsdb->fsdb_mdt_index_map))
4241 rc = name_create_mdt(&logname,
4242 mti->mti_fsname, i);
4245 rc = mgs_wlp_lcfg(env, mgs, fsdb, mti,
4246 logname, &mgi->mgi_bufs,
4248 name_destroy(&logname);
4253 if ((memcmp(tmp, "root_squash=", 12) == 0) ||
4254 (memcmp(tmp, "nosquash_nids=", 14) == 0)) {
4255 LCONSOLE_ERROR("%s: root squash parameters "
4256 "cannot be applied to a single MDT\n",
4258 GOTO(end, rc = -EINVAL);
4260 rc = mgs_wlp_lcfg(env, mgs, fsdb, mti,
4261 mti->mti_svname, &mgi->mgi_bufs,
4262 mti->mti_svname, ptr);
4267 /* root squash settings are also applied to llite
4268 * config log (see LU-1778) */
4270 ((memcmp(tmp, "root_squash=", 12) == 0) ||
4271 (memcmp(tmp, "nosquash_nids=", 14) == 0))) {
4275 rc = name_create(&cname, mti->mti_fsname, "-client");
4278 rc = name_create(&logname, mti->mti_fsname, "-client");
4280 name_destroy(&cname);
4283 rc = name_create(&ptr2, PARAM_LLITE, tmp);
4285 name_destroy(&cname);
4286 name_destroy(&logname);
4289 rc = mgs_wlp_lcfg(env, mgs, fsdb, mti, logname,
4290 &mgi->mgi_bufs, cname, ptr2);
4291 name_destroy(&ptr2);
4292 name_destroy(&logname);
4293 name_destroy(&cname);
4298 /* All mdd., ost. and osd. params in proc */
4299 if ((class_match_param(ptr, PARAM_MDD, NULL) == 0) ||
4300 (class_match_param(ptr, PARAM_LOD, NULL) == 0) ||
4301 (class_match_param(ptr, PARAM_OST, NULL) == 0) ||
4302 (class_match_param(ptr, PARAM_OSD, NULL) == 0)) {
4303 CDEBUG(D_MGS, "%.3s param %s\n", ptr, ptr + 4);
4304 if (mgs_log_is_empty(env, mgs, mti->mti_svname))
4305 GOTO(end, rc = -ENODEV);
4307 rc = mgs_wlp_lcfg(env, mgs, fsdb, mti, mti->mti_svname,
4308 &mgi->mgi_bufs, mti->mti_svname, ptr);
4312 LCONSOLE_WARN("Ignoring unrecognized param '%s'\n", ptr);
4316 CERROR("err %d on param '%s'\n", rc, ptr);
4321 int mgs_write_log_target(const struct lu_env *env, struct mgs_device *mgs,
4322 struct mgs_target_info *mti, struct fs_db *fsdb)
4329 /* set/check the new target index */
4330 rc = mgs_set_index(env, mgs, mti);
4334 if (rc == EALREADY) {
4335 LCONSOLE_WARN("Found index %d for %s, updating log\n",
4336 mti->mti_stripe_index, mti->mti_svname);
4337 /* We would like to mark old log sections as invalid
4338 and add new log sections in the client and mdt logs.
4339 But if we add new sections, then live clients will
4340 get repeat setup instructions for already running
4341 osc's. So don't update the client/mdt logs. */
4342 mti->mti_flags &= ~LDD_F_UPDATE;
4346 OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_WRITE_TARGET_DELAY, cfs_fail_val > 0 ?
4349 mutex_lock(&fsdb->fsdb_mutex);
4351 if (mti->mti_flags & (LDD_F_VIRGIN | LDD_F_WRITECONF)) {
4352 /* Generate a log from scratch */
4353 if (mti->mti_flags & LDD_F_SV_TYPE_MDT) {
4354 rc = mgs_write_log_mdt(env, mgs, fsdb, mti);
4355 } else if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
4356 rc = mgs_write_log_ost(env, mgs, fsdb, mti);
4358 CERROR("Unknown target type %#x, can't create log for %s\n",
4359 mti->mti_flags, mti->mti_svname);
4362 CERROR("Can't write logs for %s (%d)\n",
4363 mti->mti_svname, rc);
4367 /* Just update the params from tunefs in mgs_write_log_params */
4368 CDEBUG(D_MGS, "Update params for %s\n", mti->mti_svname);
4369 mti->mti_flags |= LDD_F_PARAM;
4372 /* allocate temporary buffer, where class_get_next_param will
4373 make copy of a current parameter */
4374 OBD_ALLOC(buf, strlen(mti->mti_params) + 1);
4376 GOTO(out_up, rc = -ENOMEM);
4377 params = mti->mti_params;
4378 while (params != NULL) {
4379 rc = class_get_next_param(¶ms, buf);
4382 /* there is no next parameter, that is
4387 CDEBUG(D_MGS, "remaining string: '%s', param: '%s'\n",
4389 rc = mgs_write_log_param(env, mgs, fsdb, mti, buf);
4394 OBD_FREE(buf, strlen(mti->mti_params) + 1);
4397 mutex_unlock(&fsdb->fsdb_mutex);
4401 int mgs_erase_log(const struct lu_env *env, struct mgs_device *mgs, char *name)
4403 struct llog_ctxt *ctxt;
4406 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
4408 CERROR("%s: MGS config context doesn't exist\n",
4409 mgs->mgs_obd->obd_name);
4412 rc = llog_erase(env, ctxt, NULL, name);
4413 /* llog may not exist */
4416 llog_ctxt_put(ctxt);
4420 CERROR("%s: failed to clear log %s: %d\n",
4421 mgs->mgs_obd->obd_name, name, rc);
4426 /* erase all logs for the given fs */
4427 int mgs_erase_logs(const struct lu_env *env, struct mgs_device *mgs,
4430 struct list_head log_list;
4431 struct mgs_direntry *dirent, *n;
4432 char barrier_name[20] = {};
4435 int rc, len = strlen(fsname);
4438 mutex_lock(&mgs->mgs_mutex);
4440 /* Find all the logs in the CONFIGS directory */
4441 rc = class_dentry_readdir(env, mgs, &log_list);
4443 mutex_unlock(&mgs->mgs_mutex);
4447 if (list_empty(&log_list)) {
4448 mutex_unlock(&mgs->mgs_mutex);
4452 snprintf(barrier_name, sizeof(barrier_name) - 1, "%s-%s",
4453 fsname, BARRIER_FILENAME);
4454 /* Delete the barrier fsdb */
4455 mgs_remove_fsdb_by_name(mgs, barrier_name);
4456 /* Delete the fs db */
4457 mgs_remove_fsdb_by_name(mgs, fsname);
4458 mutex_unlock(&mgs->mgs_mutex);
4460 list_for_each_entry_safe(dirent, n, &log_list, mde_list) {
4461 list_del_init(&dirent->mde_list);
4462 suffix = strrchr(dirent->mde_name, '-');
4463 if (suffix != NULL) {
4464 if ((len == suffix - dirent->mde_name) &&
4465 (strncmp(fsname, dirent->mde_name, len) == 0)) {
4466 CDEBUG(D_MGS, "Removing log %s\n",
4468 mgs_erase_log(env, mgs, dirent->mde_name);
4472 mgs_direntry_free(dirent);
4481 /* list all logs for the given fs */
4482 int mgs_list_logs(const struct lu_env *env, struct mgs_device *mgs,
4483 struct obd_ioctl_data *data)
4485 struct list_head log_list;
4486 struct mgs_direntry *dirent, *n;
4492 /* Find all the logs in the CONFIGS directory */
4493 rc = class_dentry_readdir(env, mgs, &log_list);
4497 out = data->ioc_bulk;
4498 remains = data->ioc_inllen1;
4499 list_for_each_entry_safe(dirent, n, &log_list, mde_list) {
4500 list_del_init(&dirent->mde_list);
4501 suffix = strrchr(dirent->mde_name, '-');
4502 if (suffix != NULL) {
4503 l = scnprintf(out, remains, "config_log: %s\n",
4508 mgs_direntry_free(dirent);
4515 struct mgs_lcfg_fork_data {
4516 struct lustre_cfg_bufs mlfd_bufs;
4517 struct mgs_device *mlfd_mgs;
4518 struct llog_handle *mlfd_llh;
4519 const char *mlfd_oldname;
4520 const char *mlfd_newname;
4524 static bool contain_valid_fsname(char *buf, const char *fsname,
4525 int buflen, int namelen)
4527 if (buflen < namelen)
4530 if (memcmp(buf, fsname, namelen) != 0)
4533 if (buf[namelen] != '\0' && buf[namelen] != '-')
4539 static int mgs_lcfg_fork_handler(const struct lu_env *env,
4540 struct llog_handle *o_llh,
4541 struct llog_rec_hdr *o_rec, void *data)
4543 struct mgs_lcfg_fork_data *mlfd = data;
4544 struct lustre_cfg_bufs *n_bufs = &mlfd->mlfd_bufs;
4545 struct lustre_cfg *o_lcfg = (struct lustre_cfg *)(o_rec + 1);
4546 struct llog_cfg_rec *lcr;
4548 char *n_buf = mlfd->mlfd_data;
4550 int o_namelen = strlen(mlfd->mlfd_oldname);
4551 int n_namelen = strlen(mlfd->mlfd_newname);
4552 int diff = n_namelen - o_namelen;
4553 __u32 cmd = o_lcfg->lcfg_command;
4554 __u32 cnt = o_lcfg->lcfg_bufcount;
4560 o_buf = lustre_cfg_buf(o_lcfg, 0);
4561 o_buflen = o_lcfg->lcfg_buflens[0];
4562 if (contain_valid_fsname(o_buf, mlfd->mlfd_oldname, o_buflen,
4564 memcpy(n_buf, mlfd->mlfd_newname, n_namelen);
4565 memcpy(n_buf + n_namelen, o_buf + o_namelen,
4566 o_buflen - o_namelen);
4567 lustre_cfg_bufs_reset(n_bufs, n_buf);
4568 n_buf += cfs_size_round(o_buflen + diff);
4570 lustre_cfg_bufs_reset(n_bufs, o_buflen != 0 ? o_buf : NULL);
4575 struct cfg_marker *o_marker;
4576 struct cfg_marker *n_marker;
4580 CDEBUG(D_MGS, "Unknown cfg marker entry with %d "
4585 /* buf[1] is marker */
4586 o_buf = lustre_cfg_buf(o_lcfg, 1);
4587 o_buflen = o_lcfg->lcfg_buflens[1];
4588 o_marker = (struct cfg_marker *)o_buf;
4589 if (!contain_valid_fsname(o_marker->cm_tgtname,
4591 sizeof(o_marker->cm_tgtname),
4593 lustre_cfg_bufs_set(n_bufs, 1, o_marker,
4598 n_marker = (struct cfg_marker *)n_buf;
4599 *n_marker = *o_marker;
4600 memcpy(n_marker->cm_tgtname, mlfd->mlfd_newname, n_namelen);
4601 tgt_namelen = strlen(o_marker->cm_tgtname);
4602 if (tgt_namelen > o_namelen)
4603 memcpy(n_marker->cm_tgtname + n_namelen,
4604 o_marker->cm_tgtname + o_namelen,
4605 tgt_namelen - o_namelen);
4606 n_marker->cm_tgtname[tgt_namelen + diff] = '\0';
4607 lustre_cfg_bufs_set(n_bufs, 1, n_marker, sizeof(*n_marker));
4611 case LCFG_SET_PARAM: {
4612 for (i = 1; i < cnt; i++)
4613 /* buf[i] is the param value, reuse it directly */
4614 lustre_cfg_bufs_set(n_bufs, i,
4615 lustre_cfg_buf(o_lcfg, i),
4616 o_lcfg->lcfg_buflens[i]);
4622 case LCFG_POOL_DEL: {
4623 if (cnt < 3 || cnt > 4) {
4624 CDEBUG(D_MGS, "Unknown cfg pool (%x) entry with %d "
4625 "buffers\n", cmd, cnt);
4629 /* buf[1] is fsname */
4630 o_buf = lustre_cfg_buf(o_lcfg, 1);
4631 o_buflen = o_lcfg->lcfg_buflens[1];
4632 memcpy(n_buf, mlfd->mlfd_newname, n_namelen);
4633 memcpy(n_buf + n_namelen, o_buf + o_namelen,
4634 o_buflen - o_namelen);
4635 lustre_cfg_bufs_set(n_bufs, 1, n_buf, o_buflen + diff);
4636 n_buf += cfs_size_round(o_buflen + diff);
4638 /* buf[2] is the pool name, reuse it directly */
4639 lustre_cfg_bufs_set(n_bufs, 2, lustre_cfg_buf(o_lcfg, 2),
4640 o_lcfg->lcfg_buflens[2]);
4645 /* buf[3] is ostname */
4646 o_buf = lustre_cfg_buf(o_lcfg, 3);
4647 o_buflen = o_lcfg->lcfg_buflens[3];
4648 memcpy(n_buf, mlfd->mlfd_newname, n_namelen);
4649 memcpy(n_buf + n_namelen, o_buf + o_namelen,
4650 o_buflen - o_namelen);
4651 lustre_cfg_bufs_set(n_bufs, 3, n_buf, o_buflen + diff);
4656 o_buflen = o_lcfg->lcfg_buflens[1];
4657 if (o_buflen == sizeof(struct lov_desc) ||
4658 o_buflen == sizeof(struct lmv_desc)) {
4664 o_buf = lustre_cfg_buf(o_lcfg, 1);
4665 if (o_buflen == sizeof(struct lov_desc)) {
4666 struct lov_desc *o_desc =
4667 (struct lov_desc *)o_buf;
4668 struct lov_desc *n_desc =
4669 (struct lov_desc *)n_buf;
4672 o_uuid = o_desc->ld_uuid.uuid;
4673 n_uuid = n_desc->ld_uuid.uuid;
4674 uuid_len = sizeof(o_desc->ld_uuid.uuid);
4676 struct lmv_desc *o_desc =
4677 (struct lmv_desc *)o_buf;
4678 struct lmv_desc *n_desc =
4679 (struct lmv_desc *)n_buf;
4682 o_uuid = o_desc->ld_uuid.uuid;
4683 n_uuid = n_desc->ld_uuid.uuid;
4684 uuid_len = sizeof(o_desc->ld_uuid.uuid);
4687 if (unlikely(!contain_valid_fsname(o_uuid,
4688 mlfd->mlfd_oldname, uuid_len,
4690 lustre_cfg_bufs_set(n_bufs, 1, o_buf,
4695 memcpy(n_uuid, mlfd->mlfd_newname, n_namelen);
4696 uuid_len = strlen(o_uuid);
4697 if (uuid_len > o_namelen)
4698 memcpy(n_uuid + n_namelen,
4700 uuid_len - o_namelen);
4701 n_uuid[uuid_len + diff] = '\0';
4702 lustre_cfg_bufs_set(n_bufs, 1, n_buf, o_buflen);
4704 } /* else case fall through */
4705 } /* else case fall through */
4709 for (i = 1; i < cnt; i++) {
4710 o_buflen = o_lcfg->lcfg_buflens[i];
4714 o_buf = lustre_cfg_buf(o_lcfg, i);
4715 if (!contain_valid_fsname(o_buf, mlfd->mlfd_oldname,
4716 o_buflen, o_namelen)) {
4717 lustre_cfg_bufs_set(n_bufs, i, o_buf, o_buflen);
4721 memcpy(n_buf, mlfd->mlfd_newname, n_namelen);
4722 if (o_buflen == o_namelen) {
4723 lustre_cfg_bufs_set(n_bufs, i, n_buf,
4725 n_buf += cfs_size_round(n_namelen);
4729 memcpy(n_buf + n_namelen, o_buf + o_namelen,
4730 o_buflen - o_namelen);
4731 lustre_cfg_bufs_set(n_bufs, i, n_buf, o_buflen + diff);
4732 n_buf += cfs_size_round(o_buflen + diff);
4738 lcr = lustre_cfg_rec_new(cmd, n_bufs);
4742 lcr->lcr_cfg = *o_lcfg;
4743 rc = llog_write(env, mlfd->mlfd_llh, &lcr->lcr_hdr, LLOG_NEXT_IDX);
4744 lustre_cfg_rec_free(lcr);
4749 static int mgs_lcfg_fork_one(const struct lu_env *env, struct mgs_device *mgs,
4750 struct mgs_direntry *mde, const char *oldname,
4751 const char *newname)
4753 struct llog_handle *old_llh = NULL;
4754 struct llog_handle *new_llh = NULL;
4755 struct llog_ctxt *ctxt = NULL;
4756 struct mgs_lcfg_fork_data *mlfd = NULL;
4757 char *name_buf = NULL;
4759 int old_namelen = strlen(oldname);
4760 int new_namelen = strlen(newname);
4764 name_buflen = mde->mde_len + new_namelen - old_namelen;
4765 OBD_ALLOC(name_buf, name_buflen);
4769 memcpy(name_buf, newname, new_namelen);
4770 memcpy(name_buf + new_namelen, mde->mde_name + old_namelen,
4771 mde->mde_len - old_namelen);
4773 CDEBUG(D_MGS, "Fork the config-log from %s to %s\n",
4774 mde->mde_name, name_buf);
4776 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
4779 rc = llog_open_create(env, ctxt, &new_llh, NULL, name_buf);
4783 rc = llog_init_handle(env, new_llh, LLOG_F_IS_PLAIN, NULL);
4787 if (unlikely(mgs_log_is_empty(env, mgs, mde->mde_name)))
4790 rc = llog_open(env, ctxt, &old_llh, NULL, mde->mde_name,
4795 rc = llog_init_handle(env, old_llh, LLOG_F_IS_PLAIN, NULL);
4799 new_llh->lgh_hdr->llh_tgtuuid = old_llh->lgh_hdr->llh_tgtuuid;
4801 OBD_ALLOC(mlfd, LLOG_MIN_CHUNK_SIZE);
4803 GOTO(out, rc = -ENOMEM);
4805 mlfd->mlfd_mgs = mgs;
4806 mlfd->mlfd_llh = new_llh;
4807 mlfd->mlfd_oldname = oldname;
4808 mlfd->mlfd_newname = newname;
4810 rc = llog_process(env, old_llh, mgs_lcfg_fork_handler, mlfd, NULL);
4811 OBD_FREE(mlfd, LLOG_MIN_CHUNK_SIZE);
4817 llog_close(env, old_llh);
4819 llog_close(env, new_llh);
4821 OBD_FREE(name_buf, name_buflen);
4823 llog_ctxt_put(ctxt);
4828 int mgs_lcfg_fork(const struct lu_env *env, struct mgs_device *mgs,
4829 const char *oldname, const char *newname)
4831 struct list_head log_list;
4832 struct mgs_direntry *dirent, *n;
4833 int olen = strlen(oldname);
4834 int nlen = strlen(newname);
4839 if (unlikely(!oldname || oldname[0] == '\0' ||
4840 !newname || newname[0] == '\0'))
4843 if (strcmp(oldname, newname) == 0)
4846 /* lock it to prevent fork/erase/register in parallel. */
4847 mutex_lock(&mgs->mgs_mutex);
4849 rc = class_dentry_readdir(env, mgs, &log_list);
4851 mutex_unlock(&mgs->mgs_mutex);
4855 if (list_empty(&log_list)) {
4856 mutex_unlock(&mgs->mgs_mutex);
4860 list_for_each_entry_safe(dirent, n, &log_list, mde_list) {
4863 ptr = strrchr(dirent->mde_name, '-');
4865 int tlen = ptr - dirent->mde_name;
4868 strncmp(newname, dirent->mde_name, tlen) == 0)
4869 GOTO(out, rc = -EEXIST);
4872 strncmp(oldname, dirent->mde_name, tlen) == 0)
4876 list_del_init(&dirent->mde_list);
4877 mgs_direntry_free(dirent);
4880 if (list_empty(&log_list)) {
4881 mutex_unlock(&mgs->mgs_mutex);
4885 list_for_each_entry(dirent, &log_list, mde_list) {
4886 rc = mgs_lcfg_fork_one(env, mgs, dirent, oldname, newname);
4894 mutex_unlock(&mgs->mgs_mutex);
4896 list_for_each_entry_safe(dirent, n, &log_list, mde_list) {
4897 list_del_init(&dirent->mde_list);
4898 mgs_direntry_free(dirent);
4901 if (rc && count > 0)
4902 mgs_erase_logs(env, mgs, newname);
4907 int mgs_lcfg_erase(const struct lu_env *env, struct mgs_device *mgs,
4913 if (unlikely(!fsname || fsname[0] == '\0'))
4916 rc = mgs_erase_logs(env, mgs, fsname);
4921 static int mgs_xattr_del(const struct lu_env *env, struct dt_object *obj)
4923 struct dt_device *dev;
4924 struct thandle *th = NULL;
4929 dev = container_of0(obj->do_lu.lo_dev, struct dt_device, dd_lu_dev);
4930 th = dt_trans_create(env, dev);
4932 RETURN(PTR_ERR(th));
4934 rc = dt_declare_xattr_del(env, obj, XATTR_TARGET_RENAME, th);
4938 rc = dt_trans_start_local(env, dev, th);
4942 dt_write_lock(env, obj, 0);
4943 rc = dt_xattr_del(env, obj, XATTR_TARGET_RENAME, th);
4948 dt_write_unlock(env, obj);
4951 dt_trans_stop(env, dev, th);
4956 int mgs_lcfg_rename(const struct lu_env *env, struct mgs_device *mgs)
4958 struct list_head log_list;
4959 struct mgs_direntry *dirent, *n;
4961 struct lu_buf buf = {
4963 .lb_len = sizeof(fsname)
4969 rc = class_dentry_readdir(env, mgs, &log_list);
4973 if (list_empty(&log_list))
4976 list_for_each_entry_safe(dirent, n, &log_list, mde_list) {
4977 struct dt_object *o = NULL;
4982 list_del_init(&dirent->mde_list);
4983 ptr = strrchr(dirent->mde_name, '-');
4987 len = ptr - dirent->mde_name;
4988 if (unlikely(len >= sizeof(oldname))) {
4989 CDEBUG(D_MGS, "Skip invalid configuration file %s\n",
4994 o = local_file_find(env, mgs->mgs_los, mgs->mgs_configs_dir,
4998 CDEBUG(D_MGS, "Fail to locate file %s: rc = %d\n",
4999 dirent->mde_name, rc);
5003 rc = dt_xattr_get(env, o, &buf, XATTR_TARGET_RENAME);
5009 "Fail to get EA for %s: rc = %d\n",
5010 dirent->mde_name, rc);
5014 if (unlikely(rc == len &&
5015 memcmp(fsname, dirent->mde_name, len) == 0)) {
5016 /* The new fsname is the same as the old one. */
5017 rc = mgs_xattr_del(env, o);
5021 memcpy(oldname, dirent->mde_name, len);
5022 oldname[len] = '\0';
5024 rc = mgs_lcfg_fork_one(env, mgs, dirent, oldname, fsname);
5025 if (rc && rc != -EEXIST) {
5026 CDEBUG(D_MGS, "Fail to fork %s: rc = %d\n",
5027 dirent->mde_name, rc);
5031 rc = mgs_erase_log(env, mgs, dirent->mde_name);
5033 CDEBUG(D_MGS, "Fail to erase old %s: rc = %d\n",
5034 dirent->mde_name, rc);
5035 /* keep it there if failed to remove it. */
5040 if (o && !IS_ERR(o))
5041 lu_object_put(env, &o->do_lu);
5043 mgs_direntry_free(dirent);
5048 list_for_each_entry_safe(dirent, n, &log_list, mde_list) {
5049 list_del_init(&dirent->mde_list);
5050 mgs_direntry_free(dirent);
5056 /* Setup _mgs fsdb and log
5058 int mgs__mgs_fsdb_setup(const struct lu_env *env, struct mgs_device *mgs)
5060 struct fs_db *fsdb = NULL;
5064 rc = mgs_find_or_make_fsdb(env, mgs, MGSSELF_NAME, &fsdb);
5066 mgs_put_fsdb(mgs, fsdb);
5071 /* Setup params fsdb and log
5073 int mgs_params_fsdb_setup(const struct lu_env *env, struct mgs_device *mgs)
5075 struct fs_db *fsdb = NULL;
5076 struct llog_handle *params_llh = NULL;
5080 rc = mgs_find_or_make_fsdb(env, mgs, PARAMS_FILENAME, &fsdb);
5082 mutex_lock(&fsdb->fsdb_mutex);
5083 rc = record_start_log(env, mgs, ¶ms_llh, PARAMS_FILENAME);
5085 rc = record_end_log(env, ¶ms_llh);
5086 mutex_unlock(&fsdb->fsdb_mutex);
5087 mgs_put_fsdb(mgs, fsdb);
5093 /* Cleanup params fsdb and log
5095 int mgs_params_fsdb_cleanup(const struct lu_env *env, struct mgs_device *mgs)
5099 rc = mgs_erase_logs(env, mgs, PARAMS_FILENAME);
5100 return rc == -ENOENT ? 0 : rc;
5104 * Fill in the mgs_target_info based on data devname and param provide.
5106 * @env thread context
5108 * @mti mgs target info. We want to set this based other paramters
5109 * passed to this function. Once setup we write it to the config
5111 * @devname optional OBD device name
5112 * @param string that contains both what tunable to set and the value to
5115 * RETURN 0 for success
5116 * negative error number on failure
5118 static int mgs_set_conf_param(const struct lu_env *env, struct mgs_device *mgs,
5119 struct mgs_target_info *mti, const char *devname,
5122 struct fs_db *fsdb = NULL;
5127 /* lustre, lustre-mdtlov, lustre-client, lustre-MDT0000 */
5131 /* We have two possible cases here:
5133 * 1) the device name embedded in the param:
5134 * lustre-OST0000.osc.max_dirty_mb=32
5136 * 2) the file system name is embedded in
5137 * the param: lustre.sys.at.min=0
5139 len = strcspn(param, ".=");
5140 if (!len || param[len] == '=')
5143 if (len >= sizeof(mti->mti_svname))
5146 snprintf(mti->mti_svname, sizeof(mti->mti_svname),
5147 "%.*s", (int)len, param);
5150 if (strlcpy(mti->mti_svname, devname, sizeof(mti->mti_svname)) >=
5151 sizeof(mti->mti_svname))
5155 if (!strlen(mti->mti_svname)) {
5156 LCONSOLE_ERROR_MSG(0x14d, "No target specified: %s\n", param);
5160 dev_type = mgs_parse_devname(mti->mti_svname, mti->mti_fsname,
5161 &mti->mti_stripe_index);
5163 /* For this case we have an invalid obd device name */
5165 CDEBUG(D_MGS, "%s don't contain an index\n", mti->mti_svname);
5166 strlcpy(mti->mti_fsname, mti->mti_svname, MTI_NAME_MAXLEN);
5169 /* Not an obd device, assume devname is the fsname.
5170 * User might of only provided fsname and not obd device
5173 CDEBUG(D_MGS, "%s is seen as a file system name\n", mti->mti_svname);
5174 strlcpy(mti->mti_fsname, mti->mti_svname, MTI_NAME_MAXLEN);
5179 GOTO(out, rc = dev_type);
5181 /* param related to llite isn't allowed to set by OST or MDT */
5182 if (dev_type & LDD_F_SV_TYPE_OST ||
5183 dev_type & LDD_F_SV_TYPE_MDT) {
5184 /* param related to llite isn't allowed to set by OST
5187 if (!strncmp(param, PARAM_LLITE,
5188 sizeof(PARAM_LLITE) - 1))
5189 GOTO(out, rc = -EINVAL);
5191 /* Strip -osc or -mdc suffix from svname */
5192 if (server_make_name(dev_type, mti->mti_stripe_index,
5193 mti->mti_fsname, mti->mti_svname,
5194 sizeof(mti->mti_svname)))
5195 GOTO(out, rc = -EINVAL);
5200 if (strlcpy(mti->mti_params, param, sizeof(mti->mti_params)) >=
5201 sizeof(mti->mti_params))
5202 GOTO(out, rc = -E2BIG);
5204 CDEBUG(D_MGS, "set_conf_param fs='%s' device='%s' param='%s'\n",
5205 mti->mti_fsname, mti->mti_svname, mti->mti_params);
5207 rc = mgs_find_or_make_fsdb(env, mgs, mti->mti_fsname, &fsdb);
5211 if (!test_bit(FSDB_MGS_SELF, &fsdb->fsdb_flags) &&
5212 test_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags)) {
5213 CERROR("No filesystem targets for %s. cfg_device from lctl "
5214 "is '%s'\n", mti->mti_fsname, mti->mti_svname);
5215 mgs_unlink_fsdb(mgs, fsdb);
5216 GOTO(out, rc = -EINVAL);
5220 * Revoke lock so everyone updates. Should be alright if
5221 * someone was already reading while we were updating the logs,
5222 * so we don't really need to hold the lock while we're
5225 mti->mti_flags = dev_type | LDD_F_PARAM;
5226 mutex_lock(&fsdb->fsdb_mutex);
5227 rc = mgs_write_log_param(env, mgs, fsdb, mti, mti->mti_params);
5228 mutex_unlock(&fsdb->fsdb_mutex);
5229 mgs_revoke_lock(mgs, fsdb, CONFIG_T_CONFIG);
5233 mgs_put_fsdb(mgs, fsdb);
5238 static int mgs_set_param2(const struct lu_env *env, struct mgs_device *mgs,
5239 struct mgs_target_info *mti, const char *param)
5241 struct fs_db *fsdb = NULL;
5246 if (strlcpy(mti->mti_params, param, sizeof(mti->mti_params)) >=
5247 sizeof(mti->mti_params))
5248 GOTO(out, rc = -E2BIG);
5250 len = strcspn(param, ".=");
5251 if (len && param[len] != '=') {
5252 struct list_head *tmp;
5256 ptr = strchr(param, '.');
5258 len = strlen(param);
5261 if (len >= sizeof(mti->mti_svname))
5262 GOTO(out, rc = -E2BIG);
5264 snprintf(mti->mti_svname, sizeof(mti->mti_svname), "%.*s",
5267 mutex_lock(&mgs->mgs_mutex);
5268 if (unlikely(list_empty(&mgs->mgs_fs_db_list))) {
5269 mutex_unlock(&mgs->mgs_mutex);
5270 GOTO(out, rc = -ENODEV);
5273 list_for_each(tmp, &mgs->mgs_fs_db_list) {
5274 fsdb = list_entry(tmp, struct fs_db, fsdb_list);
5275 if (fsdb->fsdb_has_lproc_entry &&
5276 strcmp(fsdb->fsdb_name, "params") != 0 &&
5277 strstr(param, fsdb->fsdb_name)) {
5278 snprintf(mti->mti_svname,
5279 sizeof(mti->mti_svname), "%s",
5287 snprintf(mti->mti_svname, sizeof(mti->mti_svname),
5290 mutex_unlock(&mgs->mgs_mutex);
5292 snprintf(mti->mti_svname, sizeof(mti->mti_svname), "general");
5295 CDEBUG(D_MGS, "set_param2 fs='%s' device='%s' param='%s'\n",
5296 mti->mti_fsname, mti->mti_svname, mti->mti_params);
5298 /* The return value should be the device type i.e LDD_F_SV_TYPE_XXX.
5299 * A returned error tells us we don't have a target obd device.
5301 dev_type = server_name2index(mti->mti_svname, &mti->mti_stripe_index,
5306 /* the return value should be the device type i.e LDD_F_SV_TYPE_XXX.
5307 * Strip -osc or -mdc suffix from svname
5309 if ((dev_type & LDD_F_SV_TYPE_OST || dev_type & LDD_F_SV_TYPE_MDT) &&
5310 server_make_name(dev_type, mti->mti_stripe_index,
5311 mti->mti_fsname, mti->mti_svname,
5312 sizeof(mti->mti_svname)))
5313 GOTO(out, rc = -EINVAL);
5315 rc = mgs_find_or_make_fsdb(env, mgs, PARAMS_FILENAME, &fsdb);
5319 * Revoke lock so everyone updates. Should be alright if
5320 * someone was already reading while we were updating the logs,
5321 * so we don't really need to hold the lock while we're
5324 mti->mti_flags = dev_type | LDD_F_PARAM2;
5325 mutex_lock(&fsdb->fsdb_mutex);
5326 rc = mgs_write_log_param2(env, mgs, fsdb, mti, mti->mti_params);
5327 mutex_unlock(&fsdb->fsdb_mutex);
5328 mgs_revoke_lock(mgs, fsdb, CONFIG_T_PARAMS);
5329 mgs_put_fsdb(mgs, fsdb);
5334 /* Set a permanent (config log) param for a target or fs
5336 * @lcfg buf0 may contain the device (testfs-MDT0000) name
5337 * buf1 contains the single parameter
5339 int mgs_set_param(const struct lu_env *env, struct mgs_device *mgs,
5340 struct lustre_cfg *lcfg)
5342 const char *param = lustre_cfg_string(lcfg, 1);
5343 struct mgs_target_info *mti;
5346 /* Create a fake mti to hold everything */
5351 print_lustre_cfg(lcfg);
5353 if (lcfg->lcfg_command == LCFG_PARAM) {
5354 /* For the case of lctl conf_param devname can be
5355 * lustre, lustre-mdtlov, lustre-client, lustre-MDT0000
5357 const char *devname = lustre_cfg_string(lcfg, 0);
5359 rc = mgs_set_conf_param(env, mgs, mti, devname, param);
5361 /* In the case of lctl set_param -P lcfg[0] will always
5362 * be 'general'. At least for now.
5364 rc = mgs_set_param2(env, mgs, mti, param);
5372 static int mgs_write_log_pool(const struct lu_env *env,
5373 struct mgs_device *mgs, char *logname,
5374 struct fs_db *fsdb, char *tgtname,
5375 enum lcfg_command_type cmd,
5376 char *fsname, char *poolname,
5377 char *ostname, char *comment)
5379 struct llog_handle *llh = NULL;
5382 rc = record_start_log(env, mgs, &llh, logname);
5385 rc = record_marker(env, llh, fsdb, CM_START, tgtname, comment);
5388 rc = record_base(env, llh, tgtname, 0, cmd,
5389 fsname, poolname, ostname, NULL);
5392 rc = record_marker(env, llh, fsdb, CM_END, tgtname, comment);
5394 record_end_log(env, &llh);
5398 int mgs_nodemap_cmd(const struct lu_env *env, struct mgs_device *mgs,
5399 enum lcfg_command_type cmd, const char *nodemap_name,
5410 case LCFG_NODEMAP_ADD:
5411 rc = nodemap_add(nodemap_name);
5413 case LCFG_NODEMAP_DEL:
5414 rc = nodemap_del(nodemap_name);
5416 case LCFG_NODEMAP_ADD_RANGE:
5417 rc = nodemap_parse_range(param, nid);
5420 rc = nodemap_add_range(nodemap_name, nid);
5422 case LCFG_NODEMAP_DEL_RANGE:
5423 rc = nodemap_parse_range(param, nid);
5426 rc = nodemap_del_range(nodemap_name, nid);
5428 case LCFG_NODEMAP_ADMIN:
5429 rc = kstrtobool(param, &bool_switch);
5432 rc = nodemap_set_allow_root(nodemap_name, bool_switch);
5434 case LCFG_NODEMAP_DENY_UNKNOWN:
5435 rc = kstrtobool(param, &bool_switch);
5438 rc = nodemap_set_deny_unknown(nodemap_name, bool_switch);
5440 case LCFG_NODEMAP_AUDIT_MODE:
5441 rc = kstrtoul(param, 10, (unsigned long *)&bool_switch);
5443 rc = nodemap_set_audit_mode(nodemap_name, bool_switch);
5445 case LCFG_NODEMAP_MAP_MODE:
5446 if (strcmp("both", param) == 0)
5447 rc = nodemap_set_mapping_mode(nodemap_name,
5449 else if (strcmp("uid_only", param) == 0)
5450 rc = nodemap_set_mapping_mode(nodemap_name,
5451 NODEMAP_MAP_UID_ONLY);
5452 else if (strcmp("gid_only", param) == 0)
5453 rc = nodemap_set_mapping_mode(nodemap_name,
5454 NODEMAP_MAP_GID_ONLY);
5458 case LCFG_NODEMAP_TRUSTED:
5459 rc = kstrtobool(param, &bool_switch);
5462 rc = nodemap_set_trust_client_ids(nodemap_name, bool_switch);
5464 case LCFG_NODEMAP_SQUASH_UID:
5465 rc = kstrtouint(param, 10, &int_id);
5468 rc = nodemap_set_squash_uid(nodemap_name, int_id);
5470 case LCFG_NODEMAP_SQUASH_GID:
5471 rc = kstrtouint(param, 10, &int_id);
5474 rc = nodemap_set_squash_gid(nodemap_name, int_id);
5476 case LCFG_NODEMAP_ADD_UIDMAP:
5477 case LCFG_NODEMAP_ADD_GIDMAP:
5478 rc = nodemap_parse_idmap(param, idmap);
5481 if (cmd == LCFG_NODEMAP_ADD_UIDMAP)
5482 rc = nodemap_add_idmap(nodemap_name, NODEMAP_UID,
5485 rc = nodemap_add_idmap(nodemap_name, NODEMAP_GID,
5488 case LCFG_NODEMAP_DEL_UIDMAP:
5489 case LCFG_NODEMAP_DEL_GIDMAP:
5490 rc = nodemap_parse_idmap(param, idmap);
5493 if (cmd == LCFG_NODEMAP_DEL_UIDMAP)
5494 rc = nodemap_del_idmap(nodemap_name, NODEMAP_UID,
5497 rc = nodemap_del_idmap(nodemap_name, NODEMAP_GID,
5500 case LCFG_NODEMAP_SET_FILESET:
5501 rc = nodemap_set_fileset(nodemap_name, param);
5503 case LCFG_NODEMAP_SET_SEPOL:
5504 rc = nodemap_set_sepol(nodemap_name, param);
5513 int mgs_pool_cmd(const struct lu_env *env, struct mgs_device *mgs,
5514 enum lcfg_command_type cmd, char *fsname,
5515 char *poolname, char *ostname)
5520 char *label = NULL, *canceled_label = NULL;
5522 struct mgs_target_info *mti = NULL;
5523 bool checked = false;
5524 bool locked = false;
5529 rc = mgs_find_or_make_fsdb(env, mgs, fsname, &fsdb);
5531 CERROR("Can't get db for %s\n", fsname);
5534 if (test_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags)) {
5535 CERROR("%s is not defined\n", fsname);
5537 GOTO(out_fsdb, rc = -EINVAL);
5540 label_sz = 10 + strlen(fsname) + strlen(poolname);
5542 /* check if ostname match fsname */
5543 if (ostname != NULL) {
5546 ptr = strrchr(ostname, '-');
5547 if ((ptr == NULL) ||
5548 (strncmp(fsname, ostname, ptr-ostname) != 0))
5550 label_sz += strlen(ostname);
5553 OBD_ALLOC(label, label_sz);
5555 GOTO(out_fsdb, rc = -ENOMEM);
5560 "new %s.%s", fsname, poolname);
5564 "add %s.%s.%s", fsname, poolname, ostname);
5567 OBD_ALLOC(canceled_label, label_sz);
5568 if (canceled_label == NULL)
5569 GOTO(out_label, rc = -ENOMEM);
5571 "rem %s.%s.%s", fsname, poolname, ostname);
5572 sprintf(canceled_label,
5573 "add %s.%s.%s", fsname, poolname, ostname);
5576 OBD_ALLOC(canceled_label, label_sz);
5577 if (canceled_label == NULL)
5578 GOTO(out_label, rc = -ENOMEM);
5580 "del %s.%s", fsname, poolname);
5581 sprintf(canceled_label,
5582 "new %s.%s", fsname, poolname);
5590 GOTO(out_cancel, rc = -ENOMEM);
5591 strncpy(mti->mti_svname, "lov pool", sizeof(mti->mti_svname));
5593 mutex_lock(&fsdb->fsdb_mutex);
5595 /* write pool def to all MDT logs */
5596 for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
5597 if (test_bit(i, fsdb->fsdb_mdt_index_map)) {
5598 rc = name_create_mdt_and_lov(&logname, &lovname,
5603 if (!checked && (canceled_label == NULL)) {
5604 rc = mgs_check_marker(env, mgs, fsdb, mti,
5605 logname, lovname, label);
5607 name_destroy(&logname);
5608 name_destroy(&lovname);
5610 rc = (rc == LLOG_PROC_BREAK ?
5615 if (canceled_label != NULL)
5616 rc = mgs_modify(env, mgs, fsdb, mti, logname,
5617 lovname, canceled_label,
5621 rc = mgs_write_log_pool(env, mgs, logname,
5625 name_destroy(&logname);
5626 name_destroy(&lovname);
5632 rc = name_create(&logname, fsname, "-client");
5636 if (!checked && (canceled_label == NULL)) {
5637 rc = mgs_check_marker(env, mgs, fsdb, mti, logname,
5638 fsdb->fsdb_clilov, label);
5640 name_destroy(&logname);
5641 GOTO(out_mti, rc = (rc == LLOG_PROC_BREAK ?
5645 if (canceled_label != NULL) {
5646 rc = mgs_modify(env, mgs, fsdb, mti, logname,
5647 fsdb->fsdb_clilov, canceled_label, CM_SKIP);
5649 name_destroy(&logname);
5654 rc = mgs_write_log_pool(env, mgs, logname, fsdb, fsdb->fsdb_clilov,
5655 cmd, fsname, poolname, ostname, label);
5656 mutex_unlock(&fsdb->fsdb_mutex);
5658 name_destroy(&logname);
5659 /* request for update */
5660 mgs_revoke_lock(mgs, fsdb, CONFIG_T_CONFIG);
5666 mutex_unlock(&fsdb->fsdb_mutex);
5670 if (canceled_label != NULL)
5671 OBD_FREE(canceled_label, label_sz);
5673 OBD_FREE(label, label_sz);
5676 mgs_unlink_fsdb(mgs, fsdb);
5677 mgs_put_fsdb(mgs, fsdb);