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) 2010, 2016, 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_handler.c
34 * Author: Nathan Rutman <nathan@clusterfs.com>
35 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
36 * Author: Mikhail Pershin <tappro@whamcloud.com>
39 #define DEBUG_SUBSYSTEM S_MGS
40 #define D_MGS D_CONFIG
42 #include <obd_class.h>
43 #include <lprocfs_status.h>
44 #include <lustre_ioctl.h>
45 #include <lustre_param.h>
47 #include "mgs_internal.h"
50 * Regular MGS handlers
52 static int mgs_connect(struct tgt_session_info *tsi)
54 struct ptlrpc_request *req = tgt_ses_req(tsi);
59 CFS_FAIL_TIMEOUT(OBD_FAIL_MGS_CONNECT_NET, cfs_fail_val);
60 rc = tgt_connect(tsi);
64 if (lustre_msg_get_conn_cnt(req->rq_reqmsg) > 1)
65 lustre_msg_add_op_flags(req->rq_repmsg, MSG_CONNECT_RECONNECT);
70 static int mgs_disconnect(struct tgt_session_info *tsi)
76 LASSERT(tsi->tsi_exp);
78 rc = tgt_disconnect(tsi);
80 RETURN(err_serious(rc));
84 static int mgs_exception(struct tgt_session_info *tsi)
88 tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_EXCEPTION);
93 static inline bool str_starts_with(const char *str, const char *prefix)
95 return strncmp(str, prefix, strlen(prefix)) == 0;
98 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 13, 53, 0)
99 static int mgs_set_info(struct tgt_session_info *tsi)
101 struct mgs_thread_info *mgi;
102 struct mgs_send_param *msp, *rep_msp;
103 struct lustre_cfg *lcfg;
110 mgi = mgs_env_info(tsi->tsi_env);
112 RETURN(err_serious(PTR_ERR(mgi)));
114 msp = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_SEND_PARAM);
116 RETURN(err_serious(-EFAULT));
118 param_len = strnlen(msp->mgs_param, sizeof(msp->mgs_param));
119 if (param_len == 0 || param_len == sizeof(msp->mgs_param))
122 /* We only allow '*.lov.stripe{size,count,offset}=*' from an RPC. */
123 s = strchr(msp->mgs_param, '.');
127 if (!str_starts_with(s + 1, "lov.stripesize=") &&
128 !str_starts_with(s + 1, "lov.stripecount=") &&
129 !str_starts_with(s + 1, "lov.stripeoffset="))
132 /* Construct lustre_cfg structure to pass to function mgs_setparam */
133 lustre_cfg_bufs_reset(&mgi->mgi_bufs, NULL);
134 lustre_cfg_bufs_set_string(&mgi->mgi_bufs, 1, msp->mgs_param);
135 lcfg = lustre_cfg_new(LCFG_PARAM, &mgi->mgi_bufs);
139 rc = mgs_setparam(tsi->tsi_env, exp2mgs_dev(tsi->tsi_exp), lcfg,
142 LCONSOLE_WARN("%s: Unable to set parameter %s for %s: %d\n",
143 tgt_name(tsi->tsi_tgt), msp->mgs_param,
144 mgi->mgi_fsname, rc);
148 /* send back the whole msp in the reply */
149 rep_msp = req_capsule_server_get(tsi->tsi_pill, &RMF_MGS_SEND_PARAM);
153 lustre_cfg_free(lcfg);
164 static int mgs_completion_ast_generic(struct ldlm_lock *lock, __u64 flags,
165 void *cbdata, enum ast_type type)
169 if (!(flags & LDLM_FL_BLOCKED_MASK)) {
172 /* l_ast_data is used as a marker to avoid cancel ldlm lock
173 * twice. See LU-2317. */
174 lock_res_and_lock(lock);
175 fsdb = (struct fs_db *)lock->l_ast_data;
176 lock->l_ast_data = NULL;
177 unlock_res_and_lock(lock);
180 struct lustre_handle lockh;
184 /* clear the bit before lock put */
185 clear_bit(FSDB_REVOKING_LOCK,
189 clear_bit(FSDB_REVOKING_PARAMS,
193 mgs_ir_notify_complete(fsdb);
199 ldlm_lock2handle(lock, &lockh);
200 ldlm_lock_decref_and_cancel(&lockh, LCK_EX);
204 RETURN(ldlm_completion_ast(lock, flags, cbdata));
207 static int mgs_completion_ast_config(struct ldlm_lock *lock, __u64 flags,
210 return mgs_completion_ast_generic(lock, flags, cbdata, AST_CONFIG);
213 static int mgs_completion_ast_params(struct ldlm_lock *lock, __u64 flags,
216 return mgs_completion_ast_generic(lock, flags, cbdata, AST_PARAMS);
219 static int mgs_completion_ast_ir(struct ldlm_lock *lock, __u64 flags,
222 return mgs_completion_ast_generic(lock, flags, cbdata, AST_IR);
225 void mgs_revoke_lock(struct mgs_device *mgs, struct fs_db *fsdb, int type)
227 ldlm_completion_callback cp = NULL;
228 struct lustre_handle lockh = {
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("%s: can't take cfg lock for %#llx/%#llx : rc = %d\n",
266 mgs->mgs_obd->obd_name,
267 le64_to_cpu(res_id.name[0]),
268 le64_to_cpu(res_id.name[1]), rc);
270 if (type == CONFIG_T_CONFIG)
271 clear_bit(FSDB_REVOKING_LOCK,
274 if (type == CONFIG_T_PARAMS)
275 clear_bit(FSDB_REVOKING_PARAMS,
278 /* lock has been cancelled in completion_ast. */
287 static int mgs_check_target(const struct lu_env *env,
288 struct mgs_device *mgs,
289 struct mgs_target_info *mti)
294 rc = mgs_check_index(env, mgs, mti);
296 LCONSOLE_ERROR_MSG(0x13b, "%s claims to have registered, but "
297 "this MGS does not know about it, preventing "
298 "registration.\n", mti->mti_svname);
300 } else if (rc == -1) {
301 LCONSOLE_ERROR_MSG(0x13c, "Client log %s-client has "
302 "disappeared! Regenerating all logs.\n",
304 mti->mti_flags |= LDD_F_WRITECONF;
307 /* Index is correctly marked as used */
314 /* Ensure this is not a failover node that is connecting first*/
315 static int mgs_check_failover_reg(struct mgs_target_info *mti)
321 ptr = mti->mti_params;
322 while (class_find_param(ptr, PARAM_FAILNODE, &ptr) == 0) {
323 while (class_parse_nid_quiet(ptr, &nid, &ptr) == 0) {
324 for (i = 0; i < mti->mti_nid_count; i++) {
325 if (nid == mti->mti_nids[i]) {
326 LCONSOLE_WARN("Denying initial registra"
327 "tion attempt from nid %s"
328 ", specified as failover"
329 "\n",libcfs_nid2str(nid));
330 return -EADDRNOTAVAIL;
338 /* Called whenever a target starts up. Flags indicate first connect, etc. */
339 static int mgs_target_reg(struct tgt_session_info *tsi)
341 struct obd_device *obd = tsi->tsi_exp->exp_obd;
342 struct mgs_device *mgs = exp2mgs_dev(tsi->tsi_exp);
343 struct mgs_target_info *mti, *rep_mti;
350 rc = lu_env_refill((struct lu_env *)tsi->tsi_env);
352 return err_serious(rc);
354 tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_REG);
356 mti = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO);
358 DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no mgs_send_param");
359 RETURN(err_serious(-EFAULT));
362 if (OCD_HAS_FLAG(&tgt_ses_req(tsi)->rq_export->exp_connect_data,
364 opc = mti->mti_flags & LDD_F_OPC_MASK;
368 if (opc == LDD_F_OPC_READY) {
369 CDEBUG(D_MGS, "fs: %s index: %d is ready to reconnect.\n",
370 mti->mti_fsname, mti->mti_stripe_index);
371 rc = mgs_ir_update(tsi->tsi_env, mgs, mti);
373 LASSERT(!(mti->mti_flags & LDD_F_IR_CAPABLE));
374 CERROR("Update IR return with %d(ignore and IR "
377 GOTO(out_nolock, rc);
380 /* Do not support unregistering right now. */
381 if (opc != LDD_F_OPC_REG)
382 GOTO(out_nolock, rc = -EINVAL);
384 CDEBUG(D_MGS, "fs: %s index: %d is registered to MGS.\n",
385 mti->mti_fsname, mti->mti_stripe_index);
387 if (mti->mti_flags & LDD_F_NEED_INDEX)
388 mti->mti_flags |= LDD_F_WRITECONF;
390 if (!(mti->mti_flags & (LDD_F_WRITECONF | LDD_F_UPGRADE14 |
392 /* We're just here as a startup ping. */
393 CDEBUG(D_MGS, "Server %s is running on %s\n",
394 mti->mti_svname, obd_export_nid2str(tsi->tsi_exp));
395 rc = mgs_check_target(tsi->tsi_env, mgs, mti);
396 /* above will set appropriate mti flags */
398 /* Nothing wrong, or fatal error */
399 GOTO(out_nolock, rc);
400 } else if (!(mti->mti_flags & LDD_F_NO_PRIMNODE)) {
401 rc = mgs_check_failover_reg(mti);
403 GOTO(out_nolock, rc);
406 OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_PAUSE_TARGET_REG, 10);
408 if (mti->mti_flags & LDD_F_WRITECONF) {
409 if (mti->mti_flags & LDD_F_SV_TYPE_MDT &&
410 mti->mti_stripe_index == 0) {
411 rc = mgs_erase_logs(tsi->tsi_env, mgs,
413 LCONSOLE_WARN("%s: Logs for fs %s were removed by user "
414 "request. All servers must be restarted "
415 "in order to regenerate the logs."
416 "\n", obd->obd_name, mti->mti_fsname);
417 } else if (mti->mti_flags &
418 (LDD_F_SV_TYPE_OST | LDD_F_SV_TYPE_MDT)) {
419 rc = mgs_erase_log(tsi->tsi_env, mgs, mti->mti_svname);
420 LCONSOLE_WARN("%s: Regenerating %s log by user "
422 obd->obd_name, mti->mti_svname);
424 mti->mti_flags |= LDD_F_UPDATE;
425 /* Erased logs means start from scratch. */
426 mti->mti_flags &= ~LDD_F_UPGRADE14;
428 GOTO(out_nolock, rc);
431 rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs, mti->mti_fsname, &fsdb);
433 CERROR("Can't get db for %s: %d\n", mti->mti_fsname, rc);
434 GOTO(out_nolock, rc);
438 * Log writing contention is handled by the fsdb_mutex.
440 * It should be alright if someone was reading while we were
441 * updating the logs - if we revoke at the end they will just update
442 * from where they left off.
445 if (mti->mti_flags & LDD_F_UPGRADE14) {
446 CERROR("Can't upgrade from 1.4 (%d)\n", rc);
450 if (mti->mti_flags & LDD_F_UPDATE) {
451 CDEBUG(D_MGS, "updating %s, index=%d\n", mti->mti_svname,
452 mti->mti_stripe_index);
454 /* create or update the target log
455 and update the client/mdt logs */
456 rc = mgs_write_log_target(tsi->tsi_env, mgs, mti, fsdb);
458 CERROR("Failed to write %s log (%d)\n",
459 mti->mti_svname, rc);
463 mti->mti_flags &= ~(LDD_F_VIRGIN | LDD_F_UPDATE |
464 LDD_F_NEED_INDEX | LDD_F_WRITECONF |
466 mti->mti_flags |= LDD_F_REWRITE_LDD;
470 mgs_revoke_lock(mgs, fsdb, CONFIG_T_CONFIG);
473 CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname,
474 mti->mti_stripe_index, rc);
475 /* An error flag is set in the mti reply rather than an error code */
477 mti->mti_flags |= LDD_F_ERROR;
479 /* send back the whole mti in the reply */
480 rep_mti = req_capsule_server_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO);
483 /* Flush logs to disk */
484 dt_sync(tsi->tsi_env, mgs->mgs_bottom);
488 /* Called whenever a target cleans up. */
489 static int mgs_target_del(struct tgt_session_info *tsi)
493 tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_DEL);
498 static int mgs_config_read(struct tgt_session_info *tsi)
500 struct ptlrpc_request *req = tgt_ses_req(tsi);
501 struct mgs_config_body *body;
506 body = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_CONFIG_BODY);
508 DEBUG_REQ(D_HA, req, "no mgs_config_body");
509 RETURN(err_serious(-EFAULT));
512 switch (body->mcb_type) {
513 case CONFIG_T_RECOVER:
514 rc = mgs_get_ir_logs(req);
516 case CONFIG_T_NODEMAP:
517 rc = nodemap_get_config_req(req->rq_export->exp_obd, req);
519 case CONFIG_T_CONFIG:
530 static int mgs_llog_open(struct tgt_session_info *tsi)
532 struct mgs_thread_info *mgi;
533 struct ptlrpc_request *req = tgt_ses_req(tsi);
539 rc = tgt_llog_open(tsi);
544 * For old clients there is no direct way of knowing which file system
545 * a client is operating at the MGS side. But we need to pick up those
546 * clients so that the MGS can mark the corresponding file system as
547 * non-IR capable because old clients are not ready to be notified.
549 * Therefore we attempt to detect the file systems name by hacking the
550 * llog operation which is currently used by the clients to fetch
551 * configuration logs. At present this is fine because this is the
552 * ONLY llog operation between mgc and the MGS.
554 * If extra llog operation are going to be added, this function needs
557 * When releases prior than 2.0 are not supported, the following code
560 mgi = mgs_env_info(tsi->tsi_env);
562 RETURN(PTR_ERR(mgi));
564 logname = req_capsule_client_get(tsi->tsi_pill, &RMF_NAME);
566 char *ptr = strrchr(logname, '-');
567 int len = (ptr != NULL) ? (int)(ptr - logname) : 0;
569 if (ptr == NULL || len >= sizeof(mgi->mgi_fsname)) {
570 if (strcmp(logname, PARAMS_FILENAME) != 0)
571 LCONSOLE_WARN("%s: non-config logname "
573 tgt_name(tsi->tsi_tgt),
575 /* not error, this can be llog test name */
577 strncpy(mgi->mgi_fsname, logname, len);
578 mgi->mgi_fsname[len] = 0;
580 rc = mgs_fsc_attach(tsi->tsi_env, tsi->tsi_exp,
582 if (rc && rc != -EEXIST) {
583 LCONSOLE_WARN("%s: Unable to add client %s "
584 "to file system %s: %d\n",
585 tgt_name(tsi->tsi_tgt),
586 libcfs_nid2str(req->rq_peer.nid),
587 mgi->mgi_fsname, rc);
593 CERROR("%s: no logname in request\n", tgt_name(tsi->tsi_tgt));
599 static inline int mgs_init_export(struct obd_export *exp)
601 struct mgs_export_data *data = &exp->u.eu_mgs_data;
603 /* init mgs_export_data for fsc */
604 spin_lock_init(&data->med_lock);
605 INIT_LIST_HEAD(&data->med_clients);
607 spin_lock(&exp->exp_lock);
608 exp->exp_connecting = 1;
609 spin_unlock(&exp->exp_lock);
611 /* self-export doesn't need client data and ldlm initialization */
612 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
613 &exp->exp_client_uuid)))
615 return ldlm_init_export(exp);
618 static inline int mgs_destroy_export(struct obd_export *exp)
622 target_destroy_export(exp);
623 mgs_client_free(exp);
625 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
626 &exp->exp_client_uuid)))
629 ldlm_destroy_export(exp);
634 static int mgs_extract_fs_pool(char * arg, char *fsname, char *poolname)
639 for (ptr = arg; (*ptr != '\0') && (*ptr != '.'); ptr++ ) {
647 strcpy(poolname, ptr);
652 static int mgs_iocontrol_nodemap(const struct lu_env *env,
653 struct mgs_device *mgs,
654 struct obd_ioctl_data *data)
656 struct lustre_cfg *lcfg = NULL;
659 const char *nodemap_name = NULL;
660 const char *nidstr = NULL;
661 const char *client_idstr = NULL;
662 const char *idtype_str = NULL;
665 char name_buf[LUSTRE_NODEMAP_NAME_LENGTH + 1];
667 unsigned long client_id;
674 if (data->ioc_type != LUSTRE_CFG_TYPE) {
675 CERROR("%s: unknown cfg record type: %d\n",
676 mgs->mgs_obd->obd_name, data->ioc_type);
677 GOTO(out, rc = -EINVAL);
680 if (data->ioc_plen1 > PAGE_SIZE)
681 GOTO(out, rc = -E2BIG);
683 OBD_ALLOC(lcfg, data->ioc_plen1);
685 GOTO(out, rc = -ENOMEM);
687 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
688 GOTO(out_lcfg, rc = -EFAULT);
690 cmd = lcfg->lcfg_command;
693 case LCFG_NODEMAP_ACTIVATE:
694 if (lcfg->lcfg_bufcount != 2)
695 GOTO(out_lcfg, rc = -EINVAL);
696 param = lustre_cfg_string(lcfg, 1);
697 if (strcmp(param, "1") == 0)
702 case LCFG_NODEMAP_ADD:
703 case LCFG_NODEMAP_DEL:
704 if (lcfg->lcfg_bufcount != 2)
705 GOTO(out_lcfg, rc = -EINVAL);
706 nodemap_name = lustre_cfg_string(lcfg, 1);
707 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
709 case LCFG_NODEMAP_TEST_NID:
710 if (lcfg->lcfg_bufcount != 2)
711 GOTO(out_lcfg, rc = -EINVAL);
712 nidstr = lustre_cfg_string(lcfg, 1);
713 nid = libcfs_str2nid(nidstr);
714 nodemap_test_nid(nid, name_buf, sizeof(name_buf));
715 rc = copy_to_user(data->ioc_pbuf1, name_buf,
716 MIN(data->ioc_plen1, sizeof(name_buf)));
718 GOTO(out_lcfg, rc = -EFAULT);
720 case LCFG_NODEMAP_TEST_ID:
721 if (lcfg->lcfg_bufcount != 4)
722 GOTO(out_lcfg, rc = -EINVAL);
723 nidstr = lustre_cfg_string(lcfg, 1);
724 idtype_str = lustre_cfg_string(lcfg, 2);
725 client_idstr = lustre_cfg_string(lcfg, 3);
727 nid = libcfs_str2nid(nidstr);
728 if (strcmp(idtype_str, "uid") == 0)
729 idtype = NODEMAP_UID;
731 idtype = NODEMAP_GID;
733 rc = kstrtoul(client_idstr, 10, &client_id);
735 GOTO(out_lcfg, rc = -EINVAL);
737 rc = nodemap_test_id(nid, idtype, client_id, &fs_id);
739 GOTO(out_lcfg, rc = -EINVAL);
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_DENY_UNKNOWN:
765 case LCFG_NODEMAP_SQUASH_UID:
766 case LCFG_NODEMAP_SQUASH_GID:
767 if (lcfg->lcfg_bufcount != 4)
768 GOTO(out_lcfg, rc = -EINVAL);
769 nodemap_name = lustre_cfg_string(lcfg, 1);
770 param = lustre_cfg_string(lcfg, 3);
771 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
778 CERROR("%s: OBD_IOC_NODEMAP command %X for %s: rc = %d\n",
779 mgs->mgs_obd->obd_name, lcfg->lcfg_command,
784 /* revoke nodemap lock */
785 rc = mgs_find_or_make_fsdb(env, mgs, LUSTRE_NODEMAP_NAME, &fsdb);
787 CWARN("%s: cannot make nodemap fsdb: rc = %d\n",
788 mgs->mgs_obd->obd_name, rc);
790 mgs_revoke_lock(mgs, fsdb, CONFIG_T_NODEMAP);
793 OBD_FREE(lcfg, data->ioc_plen1);
798 static int mgs_iocontrol_pool(const struct lu_env *env,
799 struct mgs_device *mgs,
800 struct obd_ioctl_data *data)
802 struct mgs_thread_info *mgi = mgs_env_info(env);
804 struct lustre_cfg *lcfg = NULL;
805 char *poolname = NULL;
808 OBD_ALLOC(poolname, LOV_MAXPOOLNAME + 1);
809 if (poolname == NULL)
812 if (data->ioc_type != LUSTRE_CFG_TYPE) {
813 CERROR("%s: unknown cfg record type: %d\n",
814 mgs->mgs_obd->obd_name, data->ioc_type);
815 GOTO(out_pool, rc = -EINVAL);
818 if (data->ioc_plen1 > PAGE_SIZE)
819 GOTO(out_pool, rc = -E2BIG);
821 OBD_ALLOC(lcfg, data->ioc_plen1);
823 GOTO(out_pool, rc = -ENOMEM);
825 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
826 GOTO(out_lcfg, rc = -EFAULT);
828 if (lcfg->lcfg_bufcount < 2)
829 GOTO(out_lcfg, rc = -EFAULT);
831 /* first arg is always <fsname>.<poolname> */
832 rc = mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), mgi->mgi_fsname,
837 switch (lcfg->lcfg_command) {
839 if (lcfg->lcfg_bufcount != 2)
840 GOTO(out_lcfg, rc = -EINVAL);
841 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_NEW, mgi->mgi_fsname,
845 if (lcfg->lcfg_bufcount != 3)
846 GOTO(out_lcfg, rc = -EINVAL);
847 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_ADD, mgi->mgi_fsname,
848 poolname, lustre_cfg_string(lcfg, 2));
851 if (lcfg->lcfg_bufcount != 3)
852 GOTO(out_lcfg, rc = -EINVAL);
853 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_REM, mgi->mgi_fsname,
854 poolname, lustre_cfg_string(lcfg, 2));
857 if (lcfg->lcfg_bufcount != 2)
858 GOTO(out_lcfg, rc = -EINVAL);
859 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_DEL, mgi->mgi_fsname,
867 CERROR("OBD_IOC_POOL err %d, cmd %X for pool %s.%s\n",
868 rc, lcfg->lcfg_command, mgi->mgi_fsname, poolname);
873 OBD_FREE(lcfg, data->ioc_plen1);
875 OBD_FREE(poolname, LOV_MAXPOOLNAME + 1);
879 /* from mdt_iocontrol */
880 static int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
881 void *karg, void __user *uarg)
883 struct mgs_device *mgs = exp2mgs_dev(exp);
884 struct obd_ioctl_data *data = karg;
889 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
891 rc = lu_env_init(&env, LCT_MG_THREAD);
897 case OBD_IOC_PARAM: {
898 struct mgs_thread_info *mgi = mgs_env_info(&env);
899 struct lustre_cfg *lcfg;
901 if (data->ioc_type != LUSTRE_CFG_TYPE) {
902 CERROR("%s: unknown cfg record type: %d\n",
903 mgs->mgs_obd->obd_name, data->ioc_type);
904 GOTO(out, rc = -EINVAL);
907 OBD_ALLOC(lcfg, data->ioc_plen1);
909 GOTO(out, rc = -ENOMEM);
910 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
911 GOTO(out_free, rc = -EFAULT);
913 if (lcfg->lcfg_bufcount < 1)
914 GOTO(out_free, rc = -EINVAL);
916 rc = mgs_setparam(&env, mgs, lcfg, mgi->mgi_fsname);
918 CERROR("%s: setparam err: rc = %d\n",
919 exp->exp_obd->obd_name, rc);
921 OBD_FREE(lcfg, data->ioc_plen1);
925 case OBD_IOC_REPLACE_NIDS: {
926 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
927 CERROR("No device name specified!\n");
932 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
933 CERROR("Device name is not NUL terminated!\n");
938 if (data->ioc_plen1 > MTI_NAME_MAXLEN) {
939 CERROR("Device name is too long\n");
944 if (!data->ioc_inllen2 || !data->ioc_inlbuf2) {
945 CERROR("No NIDs were specified!\n");
950 if (data->ioc_inlbuf2[data->ioc_inllen2 - 1] != 0) {
951 CERROR("NID list is not NUL terminated!\n");
956 /* replace nids in llog */
957 rc = mgs_replace_nids(&env, mgs, data->ioc_inlbuf1,
960 CERROR("%s: error replacing nids: rc = %d\n",
961 exp->exp_obd->obd_name, rc);
967 rc = mgs_iocontrol_pool(&env, mgs, data);
970 case OBD_IOC_NODEMAP:
971 rc = mgs_iocontrol_nodemap(&env, mgs, data);
974 case OBD_IOC_CATLOGLIST:
975 rc = mgs_list_logs(&env, mgs, data);
977 case OBD_IOC_LLOG_CANCEL:
978 case OBD_IOC_LLOG_REMOVE:
979 case OBD_IOC_LLOG_CHECK:
980 case OBD_IOC_LLOG_INFO:
981 case OBD_IOC_LLOG_PRINT: {
982 struct llog_ctxt *ctxt;
984 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
985 rc = llog_ioctl(&env, ctxt, cmd, data);
991 CERROR("%s: unknown command %#x\n",
992 mgs->mgs_obd->obd_name, cmd);
1001 static int mgs_connect_to_osd(struct mgs_device *m, const char *nextdev)
1003 struct obd_connect_data *data = NULL;
1004 struct obd_device *obd;
1008 OBD_ALLOC_PTR(data);
1012 obd = class_name2obd(nextdev);
1014 CERROR("can't locate next device: %s\n", nextdev);
1015 GOTO(out, rc = -ENOTCONN);
1018 data->ocd_version = LUSTRE_VERSION_CODE;
1020 rc = obd_connect(NULL, &m->mgs_bottom_exp, obd,
1021 &obd->obd_uuid, data, NULL);
1023 CERROR("cannot connect to next dev %s (%d)\n", nextdev, rc);
1027 m->mgs_bottom = lu2dt_dev(m->mgs_bottom_exp->exp_obd->obd_lu_dev);
1028 m->mgs_dt_dev.dd_lu_dev.ld_site = m->mgs_bottom->dd_lu_dev.ld_site;
1029 LASSERT(m->mgs_dt_dev.dd_lu_dev.ld_site);
1035 static struct tgt_handler mgs_mgs_handlers[] = {
1036 TGT_RPC_HANDLER(MGS_FIRST_OPC,
1037 0, MGS_CONNECT, mgs_connect,
1038 &RQF_CONNECT, LUSTRE_OBD_VERSION),
1039 TGT_RPC_HANDLER(MGS_FIRST_OPC,
1040 0, MGS_DISCONNECT, mgs_disconnect,
1041 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
1042 TGT_MGS_HDL_VAR(0, MGS_EXCEPTION, mgs_exception),
1043 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 13, 53, 0)
1044 TGT_MGS_HDL (HABEO_REFERO | MUTABOR, MGS_SET_INFO, mgs_set_info),
1046 TGT_MGS_HDL (HABEO_REFERO | MUTABOR, MGS_TARGET_REG, mgs_target_reg),
1047 TGT_MGS_HDL_VAR(0, MGS_TARGET_DEL, mgs_target_del),
1048 TGT_MGS_HDL (HABEO_REFERO, MGS_CONFIG_READ, mgs_config_read),
1051 static struct tgt_handler mgs_obd_handlers[] = {
1052 TGT_OBD_HDL(0, OBD_PING, tgt_obd_ping),
1055 static struct tgt_handler mgs_dlm_handlers[] = {
1056 [LDLM_ENQUEUE - LDLM_FIRST_OPC] = {
1057 .th_name = "LDLM_ENQUEUE",
1058 /* don't use th_fail_id for MGS to don't interfere with MDS tests.
1059 * * There are no tests for MGS with OBD_FAIL_LDLM_ENQUEUE_NET so it
1060 * * is safe. If such tests will be needed we have to distinguish
1061 * * MDS and MGS fail ids, e.g use OBD_FAIL_MGS_ENQUEUE_NET for MGS
1062 * * instead of common OBD_FAIL_LDLM_ENQUEUE_NET */
1064 .th_opc = LDLM_ENQUEUE,
1065 .th_flags = HABEO_CLAVIS,
1066 .th_act = tgt_enqueue,
1067 .th_fmt = &RQF_LDLM_ENQUEUE,
1068 .th_version = LUSTRE_DLM_VERSION,
1072 static struct tgt_handler mgs_llog_handlers[] = {
1073 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, mgs_llog_open),
1074 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
1075 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
1076 TGT_LLOG_HDL_VAR(0, LLOG_ORIGIN_HANDLE_CLOSE, tgt_llog_close),
1077 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
1080 static struct tgt_opc_slice mgs_common_slice[] = {
1082 .tos_opc_start = MGS_FIRST_OPC,
1083 .tos_opc_end = MGS_LAST_OPC,
1084 .tos_hs = mgs_mgs_handlers
1087 .tos_opc_start = OBD_FIRST_OPC,
1088 .tos_opc_end = OBD_LAST_OPC,
1089 .tos_hs = mgs_obd_handlers
1092 .tos_opc_start = LDLM_FIRST_OPC,
1093 .tos_opc_end = LDLM_LAST_OPC,
1094 .tos_hs = mgs_dlm_handlers
1097 .tos_opc_start = LLOG_FIRST_OPC,
1098 .tos_opc_end = LLOG_LAST_OPC,
1099 .tos_hs = mgs_llog_handlers
1102 .tos_opc_start = SEC_FIRST_OPC,
1103 .tos_opc_end = SEC_LAST_OPC,
1104 .tos_hs = tgt_sec_ctx_handlers
1111 static int mgs_init0(const struct lu_env *env, struct mgs_device *mgs,
1112 struct lu_device_type *ldt, struct lustre_cfg *lcfg)
1114 struct ptlrpc_service_conf conf;
1115 struct obd_device *obd;
1116 struct lustre_mount_info *lmi;
1117 struct llog_ctxt *ctxt;
1118 struct fs_db *fsdb = NULL;
1119 struct fs_db *fsdb_srpc = NULL;
1124 lmi = server_get_mount(lustre_cfg_string(lcfg, 0));
1128 mgs->mgs_dt_dev.dd_lu_dev.ld_ops = &mgs_lu_ops;
1130 rc = mgs_connect_to_osd(mgs, lustre_cfg_string(lcfg, 3));
1134 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1137 mgs->mgs_obd->obd_lu_dev = &mgs->mgs_dt_dev.dd_lu_dev;
1139 obd->u.obt.obt_magic = OBT_MAGIC;
1140 obd->u.obt.obt_instance = 0;
1142 /* namespace for mgs llog */
1143 obd->obd_namespace = ldlm_namespace_new(obd ,"MGS",
1144 LDLM_NAMESPACE_SERVER,
1145 LDLM_NAMESPACE_MODEST,
1147 if (obd->obd_namespace == NULL)
1148 GOTO(err_ops, rc = -ENOMEM);
1150 /* No recovery for MGCs */
1151 obd->obd_replayable = 0;
1153 rc = tgt_init(env, &mgs->mgs_lut, obd, mgs->mgs_bottom,
1154 mgs_common_slice, OBD_FAIL_MGS_ALL_REQUEST_NET,
1155 OBD_FAIL_MGS_ALL_REPLY_NET);
1159 rc = mgs_fs_setup(env, mgs);
1161 CERROR("%s: MGS filesystem method init failed: rc = %d\n",
1166 rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT,
1167 obd, &llog_osd_ops);
1171 /* XXX: we need this trick till N:1 stack is supported
1172 * set "current" directory for named llogs */
1173 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1175 ctxt->loc_dir = mgs->mgs_configs_dir;
1176 llog_ctxt_put(ctxt);
1178 /* Internal mgs setup */
1179 mgs_init_fsdb_list(mgs);
1180 mutex_init(&mgs->mgs_mutex);
1181 mgs->mgs_start_time = cfs_time_current_sec();
1182 spin_lock_init(&mgs->mgs_lock);
1183 mutex_init(&mgs->mgs_health_mutex);
1185 rc = lproc_mgs_setup(mgs, lustre_cfg_string(lcfg, 3));
1187 CERROR("%s: cannot initialize proc entry: rc = %d\n",
1192 /* Setup params fsdb and log, so that other servers can make a local
1193 * copy successfully when they are mounted. See LU-4783 */
1194 rc = mgs_params_fsdb_setup(env, mgs, fsdb);
1196 /* params fsdb and log can be setup later */
1197 CERROR("%s: %s fsdb and log setup failed: rc = %d\n",
1198 obd->obd_name, PARAMS_FILENAME, rc);
1200 /* Setup _mgs fsdb, useful for srpc */
1201 mgs__mgs_fsdb_setup(env, mgs, fsdb_srpc);
1203 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
1204 "mgs_ldlm_client", &obd->obd_ldlm_client);
1206 conf = (typeof(conf)) {
1207 .psc_name = LUSTRE_MGS_NAME,
1208 .psc_watchdog_factor = MGS_SERVICE_WATCHDOG_FACTOR,
1210 .bc_nbufs = MGS_NBUFS,
1211 .bc_buf_size = MGS_BUFSIZE,
1212 .bc_req_max_size = MGS_MAXREQSIZE,
1213 .bc_rep_max_size = MGS_MAXREPSIZE,
1214 .bc_req_portal = MGS_REQUEST_PORTAL,
1215 .bc_rep_portal = MGC_REPLY_PORTAL,
1218 .tc_thr_name = "ll_mgs",
1219 .tc_nthrs_init = MGS_NTHRS_INIT,
1220 .tc_nthrs_max = MGS_NTHRS_MAX,
1221 .tc_ctx_tags = LCT_MG_THREAD,
1224 .so_req_handler = tgt_request_handle,
1225 .so_req_printer = target_print_req,
1229 /* Start the service threads */
1230 mgs->mgs_service = ptlrpc_register_service(&conf, obd->obd_proc_entry);
1231 if (IS_ERR(mgs->mgs_service)) {
1232 rc = PTR_ERR(mgs->mgs_service);
1233 CERROR("failed to start mgs service: %d\n", rc);
1234 mgs->mgs_service = NULL;
1235 GOTO(err_lproc, rc);
1238 ping_evictor_start();
1240 CDEBUG(D_INFO, "MGS %s started\n", obd->obd_name);
1242 /* device stack is not yet fully setup to keep no objects behind */
1243 lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0);
1246 mgs_params_fsdb_cleanup(env, mgs);
1247 lproc_mgs_cleanup(mgs);
1249 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1251 ctxt->loc_dir = NULL;
1252 llog_cleanup(env, ctxt);
1255 tgt_fini(env, &mgs->mgs_lut);
1257 /* No extra cleanup needed for llog_init_commit_thread() */
1258 mgs_fs_cleanup(env, mgs);
1260 ldlm_namespace_free(obd->obd_namespace, NULL, 0);
1261 obd->obd_namespace = NULL;
1263 lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0);
1264 if (!cfs_hash_is_empty(mgs2lu_dev(mgs)->ld_site->ls_obj_hash)) {
1265 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
1266 lu_site_print(env, mgs2lu_dev(mgs)->ld_site, &msgdata,
1269 obd_disconnect(mgs->mgs_bottom_exp);
1272 server_put_mount(lustre_cfg_string(lcfg, 0), true);
1276 static struct lu_device *mgs_device_free(const struct lu_env *env,
1277 struct lu_device *lu)
1279 struct mgs_device *mgs = lu2mgs_dev(lu);
1282 dt_device_fini(&mgs->mgs_dt_dev);
1287 static int mgs_process_config(const struct lu_env *env,
1288 struct lu_device *dev,
1289 struct lustre_cfg *lcfg)
1295 static int mgs_object_init(const struct lu_env *env, struct lu_object *o,
1296 const struct lu_object_conf *unused)
1298 struct mgs_device *d = lu2mgs_dev(o->lo_dev);
1299 struct lu_device *under;
1300 struct lu_object *below;
1304 /* do no set .do_ops as mgs calls to bottom osd directly */
1306 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
1307 PFID(lu_object_fid(o)));
1309 under = &d->mgs_bottom->dd_lu_dev;
1310 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
1312 lu_object_add(o, below);
1319 static void mgs_object_free(const struct lu_env *env, struct lu_object *o)
1321 struct mgs_object *obj = lu2mgs_obj(o);
1322 struct lu_object_header *h = o->lo_header;
1324 dt_object_fini(&obj->mgo_obj);
1325 lu_object_header_fini(h);
1329 static int mgs_object_print(const struct lu_env *env, void *cookie,
1330 lu_printer_t p, const struct lu_object *l)
1332 const struct mgs_object *o = lu2mgs_obj((struct lu_object *) l);
1334 return (*p)(env, cookie, LUSTRE_MGS_NAME"-object@%p", o);
1337 static struct lu_object_operations mgs_lu_obj_ops = {
1338 .loo_object_init = mgs_object_init,
1339 .loo_object_free = mgs_object_free,
1340 .loo_object_print = mgs_object_print,
1343 static struct lu_object *mgs_object_alloc(const struct lu_env *env,
1344 const struct lu_object_header *hdr,
1345 struct lu_device *d)
1347 struct lu_object_header *h;
1348 struct mgs_object *o;
1349 struct lu_object *l;
1351 LASSERT(hdr == NULL);
1355 l = &o->mgo_obj.do_lu;
1358 lu_object_header_init(h);
1359 dt_object_init(&o->mgo_obj, h, d);
1360 lu_object_add_top(h, l);
1362 l->lo_ops = &mgs_lu_obj_ops;
1370 const struct lu_device_operations mgs_lu_ops = {
1371 .ldo_object_alloc = mgs_object_alloc,
1372 .ldo_process_config = mgs_process_config,
1375 static struct lu_device *mgs_device_alloc(const struct lu_env *env,
1376 struct lu_device_type *type,
1377 struct lustre_cfg *lcfg)
1379 struct mgs_device *mgs;
1380 struct lu_device *ludev;
1384 ludev = ERR_PTR(-ENOMEM);
1388 ludev = mgs2lu_dev(mgs);
1389 dt_device_init(&mgs->mgs_dt_dev, type);
1390 rc = mgs_init0(env, mgs, type, lcfg);
1392 mgs_device_free(env, ludev);
1393 ludev = ERR_PTR(rc);
1399 static struct lu_device *mgs_device_fini(const struct lu_env *env,
1400 struct lu_device *d)
1402 struct mgs_device *mgs = lu2mgs_dev(d);
1403 struct obd_device *obd = mgs->mgs_obd;
1404 struct llog_ctxt *ctxt;
1408 LASSERT(mgs->mgs_bottom);
1410 class_disconnect_exports(obd);
1412 ping_evictor_stop();
1414 mutex_lock(&mgs->mgs_health_mutex);
1415 ptlrpc_unregister_service(mgs->mgs_service);
1416 mutex_unlock(&mgs->mgs_health_mutex);
1418 mgs_params_fsdb_cleanup(env, mgs);
1419 mgs_cleanup_fsdb_list(mgs);
1421 ldlm_namespace_free_prior(obd->obd_namespace, NULL, 1);
1422 obd_exports_barrier(obd);
1423 obd_zombie_barrier();
1425 tgt_fini(env, &mgs->mgs_lut);
1426 lproc_mgs_cleanup(mgs);
1428 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1430 ctxt->loc_dir = NULL;
1431 llog_cleanup(env, ctxt);
1434 mgs_fs_cleanup(env, mgs);
1436 ldlm_namespace_free_post(obd->obd_namespace);
1437 obd->obd_namespace = NULL;
1439 lu_site_purge(env, d->ld_site, ~0);
1440 if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
1441 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
1442 lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
1445 LASSERT(mgs->mgs_bottom_exp);
1446 obd_disconnect(mgs->mgs_bottom_exp);
1448 server_put_mount(obd->obd_name, true);
1453 /* context key constructor/destructor: mgs_key_init, mgs_key_fini */
1454 LU_KEY_INIT_FINI(mgs, struct mgs_thread_info);
1456 LU_TYPE_INIT_FINI(mgs, &mgs_thread_key);
1458 LU_CONTEXT_KEY_DEFINE(mgs, LCT_MG_THREAD);
1460 static struct lu_device_type_operations mgs_device_type_ops = {
1461 .ldto_init = mgs_type_init,
1462 .ldto_fini = mgs_type_fini,
1464 .ldto_start = mgs_type_start,
1465 .ldto_stop = mgs_type_stop,
1467 .ldto_device_alloc = mgs_device_alloc,
1468 .ldto_device_free = mgs_device_free,
1470 .ldto_device_fini = mgs_device_fini
1473 static struct lu_device_type mgs_device_type = {
1474 .ldt_tags = LU_DEVICE_DT,
1475 .ldt_name = LUSTRE_MGS_NAME,
1476 .ldt_ops = &mgs_device_type_ops,
1477 .ldt_ctx_tags = LCT_MG_THREAD
1480 static int mgs_obd_connect(const struct lu_env *env, struct obd_export **exp,
1481 struct obd_device *obd, struct obd_uuid *cluuid,
1482 struct obd_connect_data *data, void *localdata)
1484 struct obd_export *lexp;
1485 struct lustre_handle conn = {
1492 if (exp == NULL || obd == NULL || cluuid == NULL)
1495 rc = class_connect(&conn, obd, cluuid);
1499 lexp = class_conn2export(&conn);
1504 data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
1506 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1507 data->ocd_connect_flags2 &= MGS_CONNECT_SUPPORTED2;
1509 data->ocd_version = LUSTRE_VERSION_CODE;
1510 lexp->exp_connect_data = *data;
1513 tgt_counter_incr(lexp, LPROC_MGS_CONNECT);
1515 rc = mgs_export_stats_init(obd, lexp, localdata);
1517 class_disconnect(lexp);
1524 static int mgs_obd_reconnect(const struct lu_env *env, struct obd_export *exp,
1525 struct obd_device *obd, struct obd_uuid *cluuid,
1526 struct obd_connect_data *data, void *localdata)
1530 if (exp == NULL || obd == NULL || cluuid == NULL)
1533 tgt_counter_incr(exp, LPROC_MGS_CONNECT);
1536 data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
1538 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1539 data->ocd_connect_flags2 &= MGS_CONNECT_SUPPORTED2;
1541 data->ocd_version = LUSTRE_VERSION_CODE;
1542 exp->exp_connect_data = *data;
1545 RETURN(mgs_export_stats_init(obd, exp, localdata));
1548 static int mgs_obd_disconnect(struct obd_export *exp)
1556 mgs_fsc_cleanup(exp);
1558 class_export_get(exp);
1559 tgt_counter_incr(exp, LPROC_MGS_DISCONNECT);
1561 rc = server_disconnect_export(exp);
1562 class_export_put(exp);
1566 static int mgs_health_check(const struct lu_env *env, struct obd_device *obd)
1568 struct mgs_device *mgs = lu2mgs_dev(obd->obd_lu_dev);
1571 mutex_lock(&mgs->mgs_health_mutex);
1572 rc |= ptlrpc_service_health_check(mgs->mgs_service);
1573 mutex_unlock(&mgs->mgs_health_mutex);
1575 return rc != 0 ? 1 : 0;
1578 /* use obd ops to offer management infrastructure */
1579 static struct obd_ops mgs_obd_device_ops = {
1580 .o_owner = THIS_MODULE,
1581 .o_connect = mgs_obd_connect,
1582 .o_reconnect = mgs_obd_reconnect,
1583 .o_disconnect = mgs_obd_disconnect,
1584 .o_init_export = mgs_init_export,
1585 .o_destroy_export = mgs_destroy_export,
1586 .o_iocontrol = mgs_iocontrol,
1587 .o_health_check = mgs_health_check,
1590 static int __init mgs_init(void)
1592 return class_register_type(&mgs_obd_device_ops, NULL, true, NULL,
1593 LUSTRE_MGS_NAME, &mgs_device_type);
1596 static void __exit mgs_exit(void)
1598 class_unregister_type(LUSTRE_MGS_NAME);
1601 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
1602 MODULE_DESCRIPTION("Lustre Management Server (MGS)");
1603 MODULE_VERSION(LUSTRE_VERSION_STRING);
1604 MODULE_LICENSE("GPL");
1606 module_init(mgs_init);
1607 module_exit(mgs_exit);