4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2010, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mgs/mgs_handler.c
38 * Author: Nathan Rutman <nathan@clusterfs.com>
39 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
40 * Author: Mikhail Pershin <tappro@whamcloud.com>
43 #define DEBUG_SUBSYSTEM S_MGS
44 #define D_MGS D_CONFIG
46 #include <obd_class.h>
47 #include <lprocfs_status.h>
48 #include <lustre_ioctl.h>
49 #include <lustre_param.h>
51 #include "mgs_internal.h"
54 * Regular MGS handlers
56 static int mgs_connect(struct tgt_session_info *tsi)
58 struct ptlrpc_request *req = tgt_ses_req(tsi);
63 CFS_FAIL_TIMEOUT(OBD_FAIL_MGS_CONNECT_NET, cfs_fail_val);
64 rc = tgt_connect(tsi);
68 if (lustre_msg_get_conn_cnt(req->rq_reqmsg) > 1)
69 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT);
74 static int mgs_disconnect(struct tgt_session_info *tsi)
80 LASSERT(tsi->tsi_exp);
82 rc = tgt_disconnect(tsi);
84 RETURN(err_serious(rc));
88 static int mgs_exception(struct tgt_session_info *tsi)
92 tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_EXCEPTION);
97 static inline bool str_starts_with(const char *str, const char *prefix)
99 return strncmp(str, prefix, strlen(prefix)) == 0;
102 static int mgs_set_info(struct tgt_session_info *tsi)
104 struct mgs_thread_info *mgi;
105 struct mgs_send_param *msp, *rep_msp;
106 struct lustre_cfg *lcfg;
113 mgi = mgs_env_info(tsi->tsi_env);
115 RETURN(err_serious(PTR_ERR(mgi)));
117 msp = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_SEND_PARAM);
119 RETURN(err_serious(-EFAULT));
121 param_len = strnlen(msp->mgs_param, sizeof(msp->mgs_param));
122 if (param_len == 0 || param_len == sizeof(msp->mgs_param))
125 /* We only allow '*.lov.stripe{size,count,offset}=*' from an RPC. */
126 s = strchr(msp->mgs_param, '.');
130 if (!str_starts_with(s + 1, "lov.stripesize=") &&
131 !str_starts_with(s + 1, "lov.stripecount=") &&
132 !str_starts_with(s + 1, "lov.stripeoffset="))
135 /* Construct lustre_cfg structure to pass to function mgs_setparam */
136 lustre_cfg_bufs_reset(&mgi->mgi_bufs, NULL);
137 lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 1, msp->mgs_param);
138 lcfg = lustre_cfg_new(LCFG_PARAM, &mgi->mgi_bufs);
142 rc = mgs_setparam(tsi->tsi_env, exp2mgs_dev(tsi->tsi_exp), lcfg,
145 LCONSOLE_WARN("%s: Unable to set parameter %s for %s: %d\n",
146 tgt_name(tsi->tsi_tgt), msp->mgs_param,
147 mgi->mgi_fsname, rc);
151 /* send back the whole msp in the reply */
152 rep_msp = req_capsule_server_get(tsi->tsi_pill, &RMF_MGS_SEND_PARAM);
156 lustre_cfg_free(lcfg);
166 static int mgs_completion_ast_generic(struct ldlm_lock *lock, __u64 flags,
167 void *cbdata, enum ast_type type)
171 if (!(flags & LDLM_FL_BLOCKED_MASK)) {
174 /* l_ast_data is used as a marker to avoid cancel ldlm lock
175 * twice. See LU-2317. */
176 lock_res_and_lock(lock);
177 fsdb = (struct fs_db *)lock->l_ast_data;
178 lock->l_ast_data = NULL;
179 unlock_res_and_lock(lock);
182 struct lustre_handle lockh;
186 /* clear the bit before lock put */
187 clear_bit(FSDB_REVOKING_LOCK,
191 clear_bit(FSDB_REVOKING_PARAMS,
195 mgs_ir_notify_complete(fsdb);
201 ldlm_lock2handle(lock, &lockh);
202 ldlm_lock_decref_and_cancel(&lockh, LCK_EX);
206 RETURN(ldlm_completion_ast(lock, flags, cbdata));
209 static int mgs_completion_ast_config(struct ldlm_lock *lock, __u64 flags,
212 return mgs_completion_ast_generic(lock, flags, cbdata, AST_CONFIG);
215 static int mgs_completion_ast_params(struct ldlm_lock *lock, __u64 flags,
218 return mgs_completion_ast_generic(lock, flags, cbdata, AST_PARAMS);
221 static int mgs_completion_ast_ir(struct ldlm_lock *lock, __u64 flags,
224 return mgs_completion_ast_generic(lock, flags, cbdata, AST_IR);
227 void mgs_revoke_lock(struct mgs_device *mgs, struct fs_db *fsdb, int type)
229 ldlm_completion_callback cp = NULL;
230 struct lustre_handle lockh = { 0 };
231 struct ldlm_res_id res_id;
232 __u64 flags = LDLM_FL_ATOMIC_CB;
236 LASSERT(fsdb->fsdb_name[0] != '\0');
237 rc = mgc_fsname2resid(fsdb->fsdb_name, &res_id, type);
240 case CONFIG_T_CONFIG:
241 case CONFIG_T_NODEMAP:
242 cp = mgs_completion_ast_config;
243 if (test_and_set_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags))
246 case CONFIG_T_PARAMS:
247 cp = mgs_completion_ast_params;
248 if (test_and_set_bit(FSDB_REVOKING_PARAMS, &fsdb->fsdb_flags))
251 case CONFIG_T_RECOVER:
252 cp = mgs_completion_ast_ir;
259 rc = ldlm_cli_enqueue_local(mgs->mgs_obd->obd_namespace,
260 &res_id, LDLM_PLAIN, NULL, LCK_EX,
261 &flags, ldlm_blocking_ast, cp,
262 NULL, fsdb, 0, LVB_T_NONE, NULL,
264 if (rc != ELDLM_OK) {
265 CERROR("can't take cfg lock for "LPX64"/"LPX64"(%d)\n",
266 le64_to_cpu(res_id.name[0]),
267 le64_to_cpu(res_id.name[1]), rc);
269 if (type == CONFIG_T_CONFIG)
270 clear_bit(FSDB_REVOKING_LOCK,
273 if (type == CONFIG_T_PARAMS)
274 clear_bit(FSDB_REVOKING_PARAMS,
277 /* lock has been cancelled in completion_ast. */
286 static int mgs_check_target(const struct lu_env *env,
287 struct mgs_device *mgs,
288 struct mgs_target_info *mti)
293 rc = mgs_check_index(env, mgs, mti);
295 LCONSOLE_ERROR_MSG(0x13b, "%s claims to have registered, but "
296 "this MGS does not know about it, preventing "
297 "registration.\n", mti->mti_svname);
299 } else if (rc == -1) {
300 LCONSOLE_ERROR_MSG(0x13c, "Client log %s-client has "
301 "disappeared! Regenerating all logs.\n",
303 mti->mti_flags |= LDD_F_WRITECONF;
306 /* Index is correctly marked as used */
308 /* If the logs don't contain the mti_nids then add
309 them as failover nids */
310 rc = mgs_check_failnid(env, mgs, mti);
316 /* Ensure this is not a failover node that is connecting first*/
317 static int mgs_check_failover_reg(struct mgs_target_info *mti)
323 ptr = mti->mti_params;
324 while (class_find_param(ptr, PARAM_FAILNODE, &ptr) == 0) {
325 while (class_parse_nid_quiet(ptr, &nid, &ptr) == 0) {
326 for (i = 0; i < mti->mti_nid_count; i++) {
327 if (nid == mti->mti_nids[i]) {
328 LCONSOLE_WARN("Denying initial registra"
329 "tion attempt from nid %s"
330 ", specified as failover"
331 "\n",libcfs_nid2str(nid));
332 return -EADDRNOTAVAIL;
340 /* Called whenever a target starts up. Flags indicate first connect, etc. */
341 static int mgs_target_reg(struct tgt_session_info *tsi)
343 struct obd_device *obd = tsi->tsi_exp->exp_obd;
344 struct mgs_device *mgs = exp2mgs_dev(tsi->tsi_exp);
345 struct mgs_target_info *mti, *rep_mti;
352 rc = lu_env_refill((struct lu_env *)tsi->tsi_env);
354 return err_serious(rc);
356 tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_REG);
358 mti = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO);
360 DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no mgs_send_param");
361 RETURN(err_serious(-EFAULT));
364 if (OCD_HAS_FLAG(&tgt_ses_req(tsi)->rq_export->exp_connect_data,
366 opc = mti->mti_flags & LDD_F_OPC_MASK;
370 if (opc == LDD_F_OPC_READY) {
371 CDEBUG(D_MGS, "fs: %s index: %d is ready to reconnect.\n",
372 mti->mti_fsname, mti->mti_stripe_index);
373 rc = mgs_ir_update(tsi->tsi_env, mgs, mti);
375 LASSERT(!(mti->mti_flags & LDD_F_IR_CAPABLE));
376 CERROR("Update IR return with %d(ignore and IR "
379 GOTO(out_nolock, rc);
382 /* Do not support unregistering right now. */
383 if (opc != LDD_F_OPC_REG)
384 GOTO(out_nolock, rc = -EINVAL);
386 CDEBUG(D_MGS, "fs: %s index: %d is registered to MGS.\n",
387 mti->mti_fsname, mti->mti_stripe_index);
389 if (mti->mti_flags & LDD_F_NEED_INDEX)
390 mti->mti_flags |= LDD_F_WRITECONF;
392 if (!(mti->mti_flags & (LDD_F_WRITECONF | LDD_F_UPGRADE14 |
394 /* We're just here as a startup ping. */
395 CDEBUG(D_MGS, "Server %s is running on %s\n",
396 mti->mti_svname, obd_export_nid2str(tsi->tsi_exp));
397 rc = mgs_check_target(tsi->tsi_env, mgs, mti);
398 /* above will set appropriate mti flags */
400 /* Nothing wrong, or fatal error */
401 GOTO(out_nolock, rc);
402 } else if (!(mti->mti_flags & LDD_F_NO_PRIMNODE)) {
403 rc = mgs_check_failover_reg(mti);
405 GOTO(out_nolock, rc);
408 OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_PAUSE_TARGET_REG, 10);
410 if (mti->mti_flags & LDD_F_WRITECONF) {
411 if (mti->mti_flags & LDD_F_SV_TYPE_MDT &&
412 mti->mti_stripe_index == 0) {
413 rc = mgs_erase_logs(tsi->tsi_env, mgs,
415 LCONSOLE_WARN("%s: Logs for fs %s were removed by user "
416 "request. All servers must be restarted "
417 "in order to regenerate the logs."
418 "\n", obd->obd_name, mti->mti_fsname);
419 } else if (mti->mti_flags &
420 (LDD_F_SV_TYPE_OST | LDD_F_SV_TYPE_MDT)) {
421 rc = mgs_erase_log(tsi->tsi_env, mgs, mti->mti_svname);
422 LCONSOLE_WARN("%s: Regenerating %s log by user "
424 obd->obd_name, mti->mti_svname);
426 mti->mti_flags |= LDD_F_UPDATE;
427 /* Erased logs means start from scratch. */
428 mti->mti_flags &= ~LDD_F_UPGRADE14;
430 GOTO(out_nolock, rc);
433 rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs, mti->mti_fsname, &fsdb);
435 CERROR("Can't get db for %s: %d\n", mti->mti_fsname, rc);
436 GOTO(out_nolock, rc);
440 * Log writing contention is handled by the fsdb_mutex.
442 * It should be alright if someone was reading while we were
443 * updating the logs - if we revoke at the end they will just update
444 * from where they left off.
447 if (mti->mti_flags & LDD_F_UPGRADE14) {
448 CERROR("Can't upgrade from 1.4 (%d)\n", rc);
452 if (mti->mti_flags & LDD_F_UPDATE) {
453 CDEBUG(D_MGS, "updating %s, index=%d\n", mti->mti_svname,
454 mti->mti_stripe_index);
456 /* create or update the target log
457 and update the client/mdt logs */
458 rc = mgs_write_log_target(tsi->tsi_env, mgs, mti, fsdb);
460 CERROR("Failed to write %s log (%d)\n",
461 mti->mti_svname, rc);
465 mti->mti_flags &= ~(LDD_F_VIRGIN | LDD_F_UPDATE |
466 LDD_F_NEED_INDEX | LDD_F_WRITECONF |
468 mti->mti_flags |= LDD_F_REWRITE_LDD;
472 mgs_revoke_lock(mgs, fsdb, CONFIG_T_CONFIG);
475 CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname,
476 mti->mti_stripe_index, rc);
477 /* An error flag is set in the mti reply rather than an error code */
479 mti->mti_flags |= LDD_F_ERROR;
481 /* send back the whole mti in the reply */
482 rep_mti = req_capsule_server_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO);
485 /* Flush logs to disk */
486 dt_sync(tsi->tsi_env, mgs->mgs_bottom);
490 /* Called whenever a target cleans up. */
491 static int mgs_target_del(struct tgt_session_info *tsi)
495 tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_DEL);
500 static int mgs_config_read(struct tgt_session_info *tsi)
502 struct ptlrpc_request *req = tgt_ses_req(tsi);
503 struct mgs_config_body *body;
508 body = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_CONFIG_BODY);
510 DEBUG_REQ(D_HA, req, "no mgs_config_body");
511 RETURN(err_serious(-EFAULT));
514 switch (body->mcb_type) {
515 case CONFIG_T_RECOVER:
516 rc = mgs_get_ir_logs(req);
518 case CONFIG_T_NODEMAP:
519 rc = nodemap_get_config_req(req->rq_export->exp_obd, req);
521 case CONFIG_T_CONFIG:
532 static int mgs_llog_open(struct tgt_session_info *tsi)
534 struct mgs_thread_info *mgi;
535 struct ptlrpc_request *req = tgt_ses_req(tsi);
541 rc = tgt_llog_open(tsi);
546 * For old clients there is no direct way of knowing which file system
547 * a client is operating at the MGS side. But we need to pick up those
548 * clients so that the MGS can mark the corresponding file system as
549 * non-IR capable because old clients are not ready to be notified.
551 * Therefore we attempt to detect the file systems name by hacking the
552 * llog operation which is currently used by the clients to fetch
553 * configuration logs. At present this is fine because this is the
554 * ONLY llog operation between mgc and the MGS.
556 * If extra llog operation are going to be added, this function needs
559 * When releases prior than 2.0 are not supported, the following code
562 mgi = mgs_env_info(tsi->tsi_env);
564 RETURN(PTR_ERR(mgi));
566 logname = req_capsule_client_get(tsi->tsi_pill, &RMF_NAME);
568 char *ptr = strchr(logname, '-');
569 int len = (ptr != NULL) ? (int)(ptr - logname) : 0;
571 if (ptr == NULL || len >= sizeof(mgi->mgi_fsname)) {
572 if (strcmp(logname, PARAMS_FILENAME) != 0)
573 LCONSOLE_WARN("%s: non-config logname "
575 tgt_name(tsi->tsi_tgt),
577 /* not error, this can be llog test name */
579 strncpy(mgi->mgi_fsname, logname, len);
580 mgi->mgi_fsname[len] = 0;
582 rc = mgs_fsc_attach(tsi->tsi_env, tsi->tsi_exp,
584 if (rc && rc != -EEXIST) {
585 LCONSOLE_WARN("%s: Unable to add client %s "
586 "to file system %s: %d\n",
587 tgt_name(tsi->tsi_tgt),
588 libcfs_nid2str(req->rq_peer.nid),
589 mgi->mgi_fsname, rc);
595 CERROR("%s: no logname in request\n", tgt_name(tsi->tsi_tgt));
601 static inline int mgs_init_export(struct obd_export *exp)
603 struct mgs_export_data *data = &exp->u.eu_mgs_data;
605 /* init mgs_export_data for fsc */
606 spin_lock_init(&data->med_lock);
607 INIT_LIST_HEAD(&data->med_clients);
609 spin_lock(&exp->exp_lock);
610 exp->exp_connecting = 1;
611 spin_unlock(&exp->exp_lock);
613 /* self-export doesn't need client data and ldlm initialization */
614 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
615 &exp->exp_client_uuid)))
617 return ldlm_init_export(exp);
620 static inline int mgs_destroy_export(struct obd_export *exp)
624 target_destroy_export(exp);
625 mgs_client_free(exp);
627 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
628 &exp->exp_client_uuid)))
631 ldlm_destroy_export(exp);
636 static int mgs_extract_fs_pool(char * arg, char *fsname, char *poolname)
641 for (ptr = arg; (*ptr != '\0') && (*ptr != '.'); ptr++ ) {
649 strcpy(poolname, ptr);
654 static int mgs_iocontrol_nodemap(const struct lu_env *env,
655 struct mgs_device *mgs,
656 struct obd_ioctl_data *data)
658 struct lustre_cfg *lcfg = NULL;
661 const char *nodemap_name = NULL;
662 const char *nidstr = NULL;
663 const char *client_idstr = NULL;
664 const char *idtype_str = NULL;
667 char name_buf[LUSTRE_NODEMAP_NAME_LENGTH + 1];
669 unsigned long client_id;
676 if (data->ioc_type != LUSTRE_CFG_TYPE) {
677 CERROR("%s: unknown cfg record type: %d\n",
678 mgs->mgs_obd->obd_name, data->ioc_type);
679 GOTO(out, rc = -EINVAL);
682 if (data->ioc_plen1 > PAGE_CACHE_SIZE)
683 GOTO(out, rc = -E2BIG);
685 OBD_ALLOC(lcfg, data->ioc_plen1);
687 GOTO(out, rc = -ENOMEM);
689 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
690 GOTO(out_lcfg, rc = -EFAULT);
692 cmd = lcfg->lcfg_command;
695 case LCFG_NODEMAP_ACTIVATE:
696 if (lcfg->lcfg_bufcount != 2)
697 GOTO(out_lcfg, rc = -EINVAL);
698 param = lustre_cfg_string(lcfg, 1);
699 if (strcmp(param, "1") == 0)
704 case LCFG_NODEMAP_ADD:
705 case LCFG_NODEMAP_DEL:
706 if (lcfg->lcfg_bufcount != 2)
707 GOTO(out_lcfg, rc = -EINVAL);
708 nodemap_name = lustre_cfg_string(lcfg, 1);
709 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
711 case LCFG_NODEMAP_TEST_NID:
712 if (lcfg->lcfg_bufcount != 2)
713 GOTO(out_lcfg, rc = -EINVAL);
714 nidstr = lustre_cfg_string(lcfg, 1);
715 nid = libcfs_str2nid(nidstr);
716 nodemap_test_nid(nid, name_buf, sizeof(name_buf));
717 rc = copy_to_user(data->ioc_pbuf1, name_buf,
718 MIN(data->ioc_plen1, sizeof(name_buf)));
720 GOTO(out_lcfg, rc = -EFAULT);
722 case LCFG_NODEMAP_TEST_ID:
723 if (lcfg->lcfg_bufcount != 4)
724 GOTO(out_lcfg, rc = -EINVAL);
725 nidstr = lustre_cfg_string(lcfg, 1);
726 idtype_str = lustre_cfg_string(lcfg, 2);
727 client_idstr = lustre_cfg_string(lcfg, 3);
729 nid = libcfs_str2nid(nidstr);
730 if (strcmp(idtype_str, "uid") == 0)
731 idtype = NODEMAP_UID;
733 idtype = NODEMAP_GID;
735 rc = kstrtoul(client_idstr, 10, &client_id);
737 GOTO(out_lcfg, rc = -EINVAL);
739 fs_id = nodemap_test_id(nid, idtype, client_id);
741 if (data->ioc_plen1 < sizeof(fs_idstr))
742 GOTO(out_lcfg, rc = -EINVAL);
744 snprintf(fs_idstr, sizeof(fs_idstr), "%u", fs_id);
745 if (copy_to_user(data->ioc_pbuf1, fs_idstr,
746 sizeof(fs_idstr)) != 0)
747 GOTO(out_lcfg, rc = -EINVAL);
749 case LCFG_NODEMAP_ADD_RANGE:
750 case LCFG_NODEMAP_DEL_RANGE:
751 case LCFG_NODEMAP_ADD_UIDMAP:
752 case LCFG_NODEMAP_DEL_UIDMAP:
753 case LCFG_NODEMAP_ADD_GIDMAP:
754 case LCFG_NODEMAP_DEL_GIDMAP:
755 case LCFG_NODEMAP_SET_FILESET:
756 if (lcfg->lcfg_bufcount != 3)
757 GOTO(out_lcfg, rc = -EINVAL);
758 nodemap_name = lustre_cfg_string(lcfg, 1);
759 param = lustre_cfg_string(lcfg, 2);
760 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
762 case LCFG_NODEMAP_ADMIN:
763 case LCFG_NODEMAP_TRUSTED:
764 case LCFG_NODEMAP_SQUASH_UID:
765 case LCFG_NODEMAP_SQUASH_GID:
766 if (lcfg->lcfg_bufcount != 4)
767 GOTO(out_lcfg, rc = -EINVAL);
768 nodemap_name = lustre_cfg_string(lcfg, 1);
769 param = lustre_cfg_string(lcfg, 3);
770 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
777 CERROR("%s: OBD_IOC_NODEMAP command %X for %s: rc = %d\n",
778 mgs->mgs_obd->obd_name, lcfg->lcfg_command,
783 /* revoke nodemap lock */
784 rc = mgs_find_or_make_fsdb(env, mgs, LUSTRE_NODEMAP_NAME, &fsdb);
786 CWARN("%s: cannot make nodemap fsdb: rc = %d\n",
787 mgs->mgs_obd->obd_name, rc);
789 mgs_revoke_lock(mgs, fsdb, CONFIG_T_NODEMAP);
792 OBD_FREE(lcfg, data->ioc_plen1);
797 static int mgs_iocontrol_pool(const struct lu_env *env,
798 struct mgs_device *mgs,
799 struct obd_ioctl_data *data)
801 struct mgs_thread_info *mgi = mgs_env_info(env);
803 struct lustre_cfg *lcfg = NULL;
804 char *poolname = NULL;
807 OBD_ALLOC(poolname, LOV_MAXPOOLNAME + 1);
808 if (poolname == NULL)
811 if (data->ioc_type != LUSTRE_CFG_TYPE) {
812 CERROR("%s: unknown cfg record type: %d\n",
813 mgs->mgs_obd->obd_name, data->ioc_type);
814 GOTO(out_pool, rc = -EINVAL);
817 if (data->ioc_plen1 > PAGE_CACHE_SIZE)
818 GOTO(out_pool, rc = -E2BIG);
820 OBD_ALLOC(lcfg, data->ioc_plen1);
822 GOTO(out_pool, rc = -ENOMEM);
824 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
825 GOTO(out_lcfg, rc = -EFAULT);
827 if (lcfg->lcfg_bufcount < 2)
828 GOTO(out_lcfg, rc = -EFAULT);
830 /* first arg is always <fsname>.<poolname> */
831 rc = mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), mgi->mgi_fsname,
836 switch (lcfg->lcfg_command) {
838 if (lcfg->lcfg_bufcount != 2)
839 GOTO(out_lcfg, rc = -EINVAL);
840 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_NEW, mgi->mgi_fsname,
844 if (lcfg->lcfg_bufcount != 3)
845 GOTO(out_lcfg, rc = -EINVAL);
846 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_ADD, mgi->mgi_fsname,
847 poolname, lustre_cfg_string(lcfg, 2));
850 if (lcfg->lcfg_bufcount != 3)
851 GOTO(out_lcfg, rc = -EINVAL);
852 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_REM, mgi->mgi_fsname,
853 poolname, lustre_cfg_string(lcfg, 2));
856 if (lcfg->lcfg_bufcount != 2)
857 GOTO(out_lcfg, rc = -EINVAL);
858 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_DEL, mgi->mgi_fsname,
866 CERROR("OBD_IOC_POOL err %d, cmd %X for pool %s.%s\n",
867 rc, lcfg->lcfg_command, mgi->mgi_fsname, poolname);
872 OBD_FREE(lcfg, data->ioc_plen1);
874 OBD_FREE(poolname, LOV_MAXPOOLNAME + 1);
878 /* from mdt_iocontrol */
879 static int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
880 void *karg, void __user *uarg)
882 struct mgs_device *mgs = exp2mgs_dev(exp);
883 struct obd_ioctl_data *data = karg;
888 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
890 rc = lu_env_init(&env, LCT_MG_THREAD);
896 case OBD_IOC_PARAM: {
897 struct mgs_thread_info *mgi = mgs_env_info(&env);
898 struct lustre_cfg *lcfg;
900 if (data->ioc_type != LUSTRE_CFG_TYPE) {
901 CERROR("%s: unknown cfg record type: %d\n",
902 mgs->mgs_obd->obd_name, data->ioc_type);
903 GOTO(out, rc = -EINVAL);
906 OBD_ALLOC(lcfg, data->ioc_plen1);
908 GOTO(out, rc = -ENOMEM);
909 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
910 GOTO(out_free, rc = -EFAULT);
912 if (lcfg->lcfg_bufcount < 1)
913 GOTO(out_free, rc = -EINVAL);
915 rc = mgs_setparam(&env, mgs, lcfg, mgi->mgi_fsname);
917 CERROR("%s: setparam err: rc = %d\n",
918 exp->exp_obd->obd_name, rc);
920 OBD_FREE(lcfg, data->ioc_plen1);
924 case OBD_IOC_REPLACE_NIDS: {
925 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
926 CERROR("No device name specified!\n");
931 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
932 CERROR("Device name is not NUL terminated!\n");
937 if (data->ioc_plen1 > MTI_NAME_MAXLEN) {
938 CERROR("Device name is too long\n");
943 if (!data->ioc_inllen2 || !data->ioc_inlbuf2) {
944 CERROR("No NIDs were specified!\n");
949 if (data->ioc_inlbuf2[data->ioc_inllen2 - 1] != 0) {
950 CERROR("NID list is not NUL terminated!\n");
955 /* replace nids in llog */
956 rc = mgs_replace_nids(&env, mgs, data->ioc_inlbuf1,
959 CERROR("%s: error replacing nids: rc = %d\n",
960 exp->exp_obd->obd_name, rc);
966 rc = mgs_iocontrol_pool(&env, mgs, data);
969 case OBD_IOC_NODEMAP:
970 rc = mgs_iocontrol_nodemap(&env, mgs, data);
973 case OBD_IOC_CATLOGLIST:
974 rc = mgs_list_logs(&env, mgs, data);
976 case OBD_IOC_LLOG_CANCEL:
977 case OBD_IOC_LLOG_REMOVE:
978 case OBD_IOC_LLOG_CHECK:
979 case OBD_IOC_LLOG_INFO:
980 case OBD_IOC_LLOG_PRINT: {
981 struct llog_ctxt *ctxt;
983 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
984 rc = llog_ioctl(&env, ctxt, cmd, data);
990 CERROR("%s: unknown command %#x\n",
991 mgs->mgs_obd->obd_name, cmd);
1000 static int mgs_connect_to_osd(struct mgs_device *m, const char *nextdev)
1002 struct obd_connect_data *data = NULL;
1003 struct obd_device *obd;
1007 OBD_ALLOC_PTR(data);
1011 obd = class_name2obd(nextdev);
1013 CERROR("can't locate next device: %s\n", nextdev);
1014 GOTO(out, rc = -ENOTCONN);
1017 data->ocd_version = LUSTRE_VERSION_CODE;
1019 rc = obd_connect(NULL, &m->mgs_bottom_exp, obd,
1020 &obd->obd_uuid, data, NULL);
1022 CERROR("cannot connect to next dev %s (%d)\n", nextdev, rc);
1026 m->mgs_bottom = lu2dt_dev(m->mgs_bottom_exp->exp_obd->obd_lu_dev);
1027 m->mgs_dt_dev.dd_lu_dev.ld_site = m->mgs_bottom->dd_lu_dev.ld_site;
1028 LASSERT(m->mgs_dt_dev.dd_lu_dev.ld_site);
1034 static struct tgt_handler mgs_mgs_handlers[] = {
1035 TGT_RPC_HANDLER(MGS_FIRST_OPC,
1036 0, MGS_CONNECT, mgs_connect,
1037 &RQF_CONNECT, LUSTRE_OBD_VERSION),
1038 TGT_RPC_HANDLER(MGS_FIRST_OPC,
1039 0, MGS_DISCONNECT, mgs_disconnect,
1040 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
1041 TGT_MGS_HDL_VAR(0, MGS_EXCEPTION, mgs_exception),
1042 TGT_MGS_HDL (HABEO_REFERO | MUTABOR, MGS_SET_INFO, mgs_set_info),
1043 TGT_MGS_HDL (HABEO_REFERO | MUTABOR, MGS_TARGET_REG, mgs_target_reg),
1044 TGT_MGS_HDL_VAR(0, MGS_TARGET_DEL, mgs_target_del),
1045 TGT_MGS_HDL (HABEO_REFERO, MGS_CONFIG_READ, mgs_config_read),
1048 static struct tgt_handler mgs_obd_handlers[] = {
1049 TGT_OBD_HDL(0, OBD_PING, tgt_obd_ping),
1052 static struct tgt_handler mgs_dlm_handlers[] = {
1053 [LDLM_ENQUEUE - LDLM_FIRST_OPC] = {
1054 .th_name = "LDLM_ENQUEUE",
1055 /* don't use th_fail_id for MGS to don't interfere with MDS tests.
1056 * * There are no tests for MGS with OBD_FAIL_LDLM_ENQUEUE_NET so it
1057 * * is safe. If such tests will be needed we have to distinguish
1058 * * MDS and MGS fail ids, e.g use OBD_FAIL_MGS_ENQUEUE_NET for MGS
1059 * * instead of common OBD_FAIL_LDLM_ENQUEUE_NET */
1061 .th_opc = LDLM_ENQUEUE,
1062 .th_flags = HABEO_CLAVIS,
1063 .th_act = tgt_enqueue,
1064 .th_fmt = &RQF_LDLM_ENQUEUE,
1065 .th_version = LUSTRE_DLM_VERSION,
1069 static struct tgt_handler mgs_llog_handlers[] = {
1070 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, mgs_llog_open),
1071 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
1072 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
1073 TGT_LLOG_HDL_VAR(0, LLOG_ORIGIN_HANDLE_CLOSE, tgt_llog_close),
1074 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
1077 static struct tgt_opc_slice mgs_common_slice[] = {
1079 .tos_opc_start = MGS_FIRST_OPC,
1080 .tos_opc_end = MGS_LAST_OPC,
1081 .tos_hs = mgs_mgs_handlers
1084 .tos_opc_start = OBD_FIRST_OPC,
1085 .tos_opc_end = OBD_LAST_OPC,
1086 .tos_hs = mgs_obd_handlers
1089 .tos_opc_start = LDLM_FIRST_OPC,
1090 .tos_opc_end = LDLM_LAST_OPC,
1091 .tos_hs = mgs_dlm_handlers
1094 .tos_opc_start = LLOG_FIRST_OPC,
1095 .tos_opc_end = LLOG_LAST_OPC,
1096 .tos_hs = mgs_llog_handlers
1099 .tos_opc_start = SEC_FIRST_OPC,
1100 .tos_opc_end = SEC_LAST_OPC,
1101 .tos_hs = tgt_sec_ctx_handlers
1108 static int mgs_init0(const struct lu_env *env, struct mgs_device *mgs,
1109 struct lu_device_type *ldt, struct lustre_cfg *lcfg)
1111 struct ptlrpc_service_conf conf;
1112 struct obd_device *obd;
1113 struct lustre_mount_info *lmi;
1114 struct llog_ctxt *ctxt;
1115 struct fs_db *fsdb = NULL;
1116 struct fs_db *fsdb_srpc = NULL;
1121 lmi = server_get_mount(lustre_cfg_string(lcfg, 0));
1125 mgs->mgs_dt_dev.dd_lu_dev.ld_ops = &mgs_lu_ops;
1127 rc = mgs_connect_to_osd(mgs, lustre_cfg_string(lcfg, 3));
1131 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1134 mgs->mgs_obd->obd_lu_dev = &mgs->mgs_dt_dev.dd_lu_dev;
1136 obd->u.obt.obt_magic = OBT_MAGIC;
1137 obd->u.obt.obt_instance = 0;
1139 /* namespace for mgs llog */
1140 obd->obd_namespace = ldlm_namespace_new(obd ,"MGS",
1141 LDLM_NAMESPACE_SERVER,
1142 LDLM_NAMESPACE_MODEST,
1144 if (obd->obd_namespace == NULL)
1145 GOTO(err_ops, rc = -ENOMEM);
1147 /* No recovery for MGCs */
1148 obd->obd_replayable = 0;
1150 rc = tgt_init(env, &mgs->mgs_lut, obd, mgs->mgs_bottom,
1151 mgs_common_slice, OBD_FAIL_MGS_ALL_REQUEST_NET,
1152 OBD_FAIL_MGS_ALL_REPLY_NET);
1156 rc = mgs_fs_setup(env, mgs);
1158 CERROR("%s: MGS filesystem method init failed: rc = %d\n",
1163 rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT,
1164 obd, &llog_osd_ops);
1168 /* XXX: we need this trick till N:1 stack is supported
1169 * set "current" directory for named llogs */
1170 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1172 ctxt->loc_dir = mgs->mgs_configs_dir;
1173 llog_ctxt_put(ctxt);
1175 /* Internal mgs setup */
1176 mgs_init_fsdb_list(mgs);
1177 mutex_init(&mgs->mgs_mutex);
1178 mgs->mgs_start_time = cfs_time_current_sec();
1179 spin_lock_init(&mgs->mgs_lock);
1180 mutex_init(&mgs->mgs_health_mutex);
1182 rc = lproc_mgs_setup(mgs, lustre_cfg_string(lcfg, 3));
1184 CERROR("%s: cannot initialize proc entry: rc = %d\n",
1189 /* Setup params fsdb and log, so that other servers can make a local
1190 * copy successfully when they are mounted. See LU-4783 */
1191 rc = mgs_params_fsdb_setup(env, mgs, fsdb);
1193 /* params fsdb and log can be setup later */
1194 CERROR("%s: %s fsdb and log setup failed: rc = %d\n",
1195 obd->obd_name, PARAMS_FILENAME, rc);
1197 /* Setup _mgs fsdb, useful for srpc */
1198 mgs__mgs_fsdb_setup(env, mgs, fsdb_srpc);
1200 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
1201 "mgs_ldlm_client", &obd->obd_ldlm_client);
1203 conf = (typeof(conf)) {
1204 .psc_name = LUSTRE_MGS_NAME,
1205 .psc_watchdog_factor = MGS_SERVICE_WATCHDOG_FACTOR,
1207 .bc_nbufs = MGS_NBUFS,
1208 .bc_buf_size = MGS_BUFSIZE,
1209 .bc_req_max_size = MGS_MAXREQSIZE,
1210 .bc_rep_max_size = MGS_MAXREPSIZE,
1211 .bc_req_portal = MGS_REQUEST_PORTAL,
1212 .bc_rep_portal = MGC_REPLY_PORTAL,
1215 .tc_thr_name = "ll_mgs",
1216 .tc_nthrs_init = MGS_NTHRS_INIT,
1217 .tc_nthrs_max = MGS_NTHRS_MAX,
1218 .tc_ctx_tags = LCT_MG_THREAD,
1221 .so_req_handler = tgt_request_handle,
1222 .so_req_printer = target_print_req,
1226 /* Start the service threads */
1227 mgs->mgs_service = ptlrpc_register_service(&conf, obd->obd_proc_entry);
1228 if (IS_ERR(mgs->mgs_service)) {
1229 rc = PTR_ERR(mgs->mgs_service);
1230 CERROR("failed to start mgs service: %d\n", rc);
1231 mgs->mgs_service = NULL;
1232 GOTO(err_lproc, rc);
1235 ping_evictor_start();
1237 CDEBUG(D_INFO, "MGS %s started\n", obd->obd_name);
1239 /* device stack is not yet fully setup to keep no objects behind */
1240 lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0);
1243 mgs_params_fsdb_cleanup(env, mgs);
1244 lproc_mgs_cleanup(mgs);
1246 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1248 ctxt->loc_dir = NULL;
1249 llog_cleanup(env, ctxt);
1252 tgt_fini(env, &mgs->mgs_lut);
1254 /* No extra cleanup needed for llog_init_commit_thread() */
1255 mgs_fs_cleanup(env, mgs);
1257 ldlm_namespace_free(obd->obd_namespace, NULL, 0);
1258 obd->obd_namespace = NULL;
1260 lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0);
1261 if (!cfs_hash_is_empty(mgs2lu_dev(mgs)->ld_site->ls_obj_hash)) {
1262 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
1263 lu_site_print(env, mgs2lu_dev(mgs)->ld_site, &msgdata,
1266 obd_disconnect(mgs->mgs_bottom_exp);
1269 server_put_mount(lustre_cfg_string(lcfg, 0), true);
1273 static struct lu_device *mgs_device_free(const struct lu_env *env,
1274 struct lu_device *lu)
1276 struct mgs_device *mgs = lu2mgs_dev(lu);
1279 dt_device_fini(&mgs->mgs_dt_dev);
1284 static int mgs_process_config(const struct lu_env *env,
1285 struct lu_device *dev,
1286 struct lustre_cfg *lcfg)
1292 static int mgs_object_init(const struct lu_env *env, struct lu_object *o,
1293 const struct lu_object_conf *unused)
1295 struct mgs_device *d = lu2mgs_dev(o->lo_dev);
1296 struct lu_device *under;
1297 struct lu_object *below;
1301 /* do no set .do_ops as mgs calls to bottom osd directly */
1303 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
1304 PFID(lu_object_fid(o)));
1306 under = &d->mgs_bottom->dd_lu_dev;
1307 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
1309 lu_object_add(o, below);
1316 static void mgs_object_free(const struct lu_env *env, struct lu_object *o)
1318 struct mgs_object *obj = lu2mgs_obj(o);
1319 struct lu_object_header *h = o->lo_header;
1321 dt_object_fini(&obj->mgo_obj);
1322 lu_object_header_fini(h);
1326 static int mgs_object_print(const struct lu_env *env, void *cookie,
1327 lu_printer_t p, const struct lu_object *l)
1329 const struct mgs_object *o = lu2mgs_obj((struct lu_object *) l);
1331 return (*p)(env, cookie, LUSTRE_MGS_NAME"-object@%p", o);
1334 static struct lu_object_operations mgs_lu_obj_ops = {
1335 .loo_object_init = mgs_object_init,
1336 .loo_object_free = mgs_object_free,
1337 .loo_object_print = mgs_object_print,
1340 static struct lu_object *mgs_object_alloc(const struct lu_env *env,
1341 const struct lu_object_header *hdr,
1342 struct lu_device *d)
1344 struct lu_object_header *h;
1345 struct mgs_object *o;
1346 struct lu_object *l;
1348 LASSERT(hdr == NULL);
1352 l = &o->mgo_obj.do_lu;
1355 lu_object_header_init(h);
1356 dt_object_init(&o->mgo_obj, h, d);
1357 lu_object_add_top(h, l);
1359 l->lo_ops = &mgs_lu_obj_ops;
1367 const struct lu_device_operations mgs_lu_ops = {
1368 .ldo_object_alloc = mgs_object_alloc,
1369 .ldo_process_config = mgs_process_config,
1372 static struct lu_device *mgs_device_alloc(const struct lu_env *env,
1373 struct lu_device_type *type,
1374 struct lustre_cfg *lcfg)
1376 struct mgs_device *mgs;
1377 struct lu_device *ludev;
1381 ludev = ERR_PTR(-ENOMEM);
1385 ludev = mgs2lu_dev(mgs);
1386 dt_device_init(&mgs->mgs_dt_dev, type);
1387 rc = mgs_init0(env, mgs, type, lcfg);
1389 mgs_device_free(env, ludev);
1390 ludev = ERR_PTR(rc);
1396 static struct lu_device *mgs_device_fini(const struct lu_env *env,
1397 struct lu_device *d)
1399 struct mgs_device *mgs = lu2mgs_dev(d);
1400 struct obd_device *obd = mgs->mgs_obd;
1401 struct llog_ctxt *ctxt;
1405 LASSERT(mgs->mgs_bottom);
1407 class_disconnect_exports(obd);
1409 ping_evictor_stop();
1411 mutex_lock(&mgs->mgs_health_mutex);
1412 ptlrpc_unregister_service(mgs->mgs_service);
1413 mutex_unlock(&mgs->mgs_health_mutex);
1415 mgs_params_fsdb_cleanup(env, mgs);
1416 mgs_cleanup_fsdb_list(mgs);
1418 ldlm_namespace_free_prior(obd->obd_namespace, NULL, 1);
1419 obd_exports_barrier(obd);
1420 obd_zombie_barrier();
1422 tgt_fini(env, &mgs->mgs_lut);
1423 lproc_mgs_cleanup(mgs);
1425 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1427 ctxt->loc_dir = NULL;
1428 llog_cleanup(env, ctxt);
1431 mgs_fs_cleanup(env, mgs);
1433 ldlm_namespace_free_post(obd->obd_namespace);
1434 obd->obd_namespace = NULL;
1436 lu_site_purge(env, d->ld_site, ~0);
1437 if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
1438 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
1439 lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
1442 LASSERT(mgs->mgs_bottom_exp);
1443 obd_disconnect(mgs->mgs_bottom_exp);
1445 server_put_mount(obd->obd_name, true);
1450 /* context key constructor/destructor: mgs_key_init, mgs_key_fini */
1451 LU_KEY_INIT_FINI(mgs, struct mgs_thread_info);
1453 LU_TYPE_INIT_FINI(mgs, &mgs_thread_key);
1455 LU_CONTEXT_KEY_DEFINE(mgs, LCT_MG_THREAD);
1457 static struct lu_device_type_operations mgs_device_type_ops = {
1458 .ldto_init = mgs_type_init,
1459 .ldto_fini = mgs_type_fini,
1461 .ldto_start = mgs_type_start,
1462 .ldto_stop = mgs_type_stop,
1464 .ldto_device_alloc = mgs_device_alloc,
1465 .ldto_device_free = mgs_device_free,
1467 .ldto_device_fini = mgs_device_fini
1470 static struct lu_device_type mgs_device_type = {
1471 .ldt_tags = LU_DEVICE_DT,
1472 .ldt_name = LUSTRE_MGS_NAME,
1473 .ldt_ops = &mgs_device_type_ops,
1474 .ldt_ctx_tags = LCT_MG_THREAD
1477 static int mgs_obd_connect(const struct lu_env *env, struct obd_export **exp,
1478 struct obd_device *obd, struct obd_uuid *cluuid,
1479 struct obd_connect_data *data, void *localdata)
1481 struct obd_export *lexp;
1482 struct lustre_handle conn = { 0 };
1487 if (exp == NULL || obd == NULL || cluuid == NULL)
1490 rc = class_connect(&conn, obd, cluuid);
1494 lexp = class_conn2export(&conn);
1499 data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
1500 data->ocd_version = LUSTRE_VERSION_CODE;
1501 lexp->exp_connect_data = *data;
1504 tgt_counter_incr(lexp, LPROC_MGS_CONNECT);
1506 rc = mgs_export_stats_init(obd, lexp, localdata);
1508 class_disconnect(lexp);
1515 static int mgs_obd_reconnect(const struct lu_env *env, struct obd_export *exp,
1516 struct obd_device *obd, struct obd_uuid *cluuid,
1517 struct obd_connect_data *data, void *localdata)
1521 if (exp == NULL || obd == NULL || cluuid == NULL)
1524 tgt_counter_incr(exp, LPROC_MGS_CONNECT);
1527 data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
1528 data->ocd_version = LUSTRE_VERSION_CODE;
1529 exp->exp_connect_data = *data;
1532 RETURN(mgs_export_stats_init(obd, exp, localdata));
1535 static int mgs_obd_disconnect(struct obd_export *exp)
1543 mgs_fsc_cleanup(exp);
1545 class_export_get(exp);
1546 tgt_counter_incr(exp, LPROC_MGS_DISCONNECT);
1548 rc = server_disconnect_export(exp);
1549 class_export_put(exp);
1553 static int mgs_health_check(const struct lu_env *env, struct obd_device *obd)
1555 struct mgs_device *mgs = lu2mgs_dev(obd->obd_lu_dev);
1558 mutex_lock(&mgs->mgs_health_mutex);
1559 rc |= ptlrpc_service_health_check(mgs->mgs_service);
1560 mutex_unlock(&mgs->mgs_health_mutex);
1562 return rc != 0 ? 1 : 0;
1565 /* use obd ops to offer management infrastructure */
1566 static struct obd_ops mgs_obd_device_ops = {
1567 .o_owner = THIS_MODULE,
1568 .o_connect = mgs_obd_connect,
1569 .o_reconnect = mgs_obd_reconnect,
1570 .o_disconnect = mgs_obd_disconnect,
1571 .o_init_export = mgs_init_export,
1572 .o_destroy_export = mgs_destroy_export,
1573 .o_iocontrol = mgs_iocontrol,
1574 .o_health_check = mgs_health_check,
1577 static int __init mgs_init(void)
1579 return class_register_type(&mgs_obd_device_ops, NULL, true, NULL,
1580 LUSTRE_MGS_NAME, &mgs_device_type);
1583 static void __exit mgs_exit(void)
1585 class_unregister_type(LUSTRE_MGS_NAME);
1588 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
1589 MODULE_DESCRIPTION("Lustre Management Server (MGS)");
1590 MODULE_VERSION(LUSTRE_VERSION_STRING);
1591 MODULE_LICENSE("GPL");
1593 module_init(mgs_init);
1594 module_exit(mgs_exit);