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, 2015, 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 = { 0 };
229 struct ldlm_res_id res_id;
230 __u64 flags = LDLM_FL_ATOMIC_CB;
234 LASSERT(fsdb->fsdb_name[0] != '\0');
235 rc = mgc_fsname2resid(fsdb->fsdb_name, &res_id, type);
238 case CONFIG_T_CONFIG:
239 case CONFIG_T_NODEMAP:
240 cp = mgs_completion_ast_config;
241 if (test_and_set_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags))
244 case CONFIG_T_PARAMS:
245 cp = mgs_completion_ast_params;
246 if (test_and_set_bit(FSDB_REVOKING_PARAMS, &fsdb->fsdb_flags))
249 case CONFIG_T_RECOVER:
250 cp = mgs_completion_ast_ir;
257 rc = ldlm_cli_enqueue_local(mgs->mgs_obd->obd_namespace,
258 &res_id, LDLM_PLAIN, NULL, LCK_EX,
259 &flags, ldlm_blocking_ast, cp,
260 NULL, fsdb, 0, LVB_T_NONE, NULL,
262 if (rc != ELDLM_OK) {
263 CERROR("%s: can't take cfg lock for %#llx/%#llx : rc = %d\n",
264 mgs->mgs_obd->obd_name,
265 le64_to_cpu(res_id.name[0]),
266 le64_to_cpu(res_id.name[1]), rc);
268 if (type == CONFIG_T_CONFIG)
269 clear_bit(FSDB_REVOKING_LOCK,
272 if (type == CONFIG_T_PARAMS)
273 clear_bit(FSDB_REVOKING_PARAMS,
276 /* lock has been cancelled in completion_ast. */
285 static int mgs_check_target(const struct lu_env *env,
286 struct mgs_device *mgs,
287 struct mgs_target_info *mti)
292 rc = mgs_check_index(env, mgs, mti);
294 LCONSOLE_ERROR_MSG(0x13b, "%s claims to have registered, but "
295 "this MGS does not know about it, preventing "
296 "registration.\n", mti->mti_svname);
298 } else if (rc == -1) {
299 LCONSOLE_ERROR_MSG(0x13c, "Client log %s-client has "
300 "disappeared! Regenerating all logs.\n",
302 mti->mti_flags |= LDD_F_WRITECONF;
305 /* Index is correctly marked as used */
312 /* Ensure this is not a failover node that is connecting first*/
313 static int mgs_check_failover_reg(struct mgs_target_info *mti)
319 ptr = mti->mti_params;
320 while (class_find_param(ptr, PARAM_FAILNODE, &ptr) == 0) {
321 while (class_parse_nid_quiet(ptr, &nid, &ptr) == 0) {
322 for (i = 0; i < mti->mti_nid_count; i++) {
323 if (nid == mti->mti_nids[i]) {
324 LCONSOLE_WARN("Denying initial registra"
325 "tion attempt from nid %s"
326 ", specified as failover"
327 "\n",libcfs_nid2str(nid));
328 return -EADDRNOTAVAIL;
336 /* Called whenever a target starts up. Flags indicate first connect, etc. */
337 static int mgs_target_reg(struct tgt_session_info *tsi)
339 struct obd_device *obd = tsi->tsi_exp->exp_obd;
340 struct mgs_device *mgs = exp2mgs_dev(tsi->tsi_exp);
341 struct mgs_target_info *mti, *rep_mti;
348 rc = lu_env_refill((struct lu_env *)tsi->tsi_env);
350 return err_serious(rc);
352 tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_REG);
354 mti = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO);
356 DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no mgs_send_param");
357 RETURN(err_serious(-EFAULT));
360 if (OCD_HAS_FLAG(&tgt_ses_req(tsi)->rq_export->exp_connect_data,
362 opc = mti->mti_flags & LDD_F_OPC_MASK;
366 if (opc == LDD_F_OPC_READY) {
367 CDEBUG(D_MGS, "fs: %s index: %d is ready to reconnect.\n",
368 mti->mti_fsname, mti->mti_stripe_index);
369 rc = mgs_ir_update(tsi->tsi_env, mgs, mti);
371 LASSERT(!(mti->mti_flags & LDD_F_IR_CAPABLE));
372 CERROR("Update IR return with %d(ignore and IR "
375 GOTO(out_nolock, rc);
378 /* Do not support unregistering right now. */
379 if (opc != LDD_F_OPC_REG)
380 GOTO(out_nolock, rc = -EINVAL);
382 CDEBUG(D_MGS, "fs: %s index: %d is registered to MGS.\n",
383 mti->mti_fsname, mti->mti_stripe_index);
385 if (mti->mti_flags & LDD_F_NEED_INDEX)
386 mti->mti_flags |= LDD_F_WRITECONF;
388 if (!(mti->mti_flags & (LDD_F_WRITECONF | LDD_F_UPGRADE14 |
390 /* We're just here as a startup ping. */
391 CDEBUG(D_MGS, "Server %s is running on %s\n",
392 mti->mti_svname, obd_export_nid2str(tsi->tsi_exp));
393 rc = mgs_check_target(tsi->tsi_env, mgs, mti);
394 /* above will set appropriate mti flags */
396 /* Nothing wrong, or fatal error */
397 GOTO(out_nolock, rc);
398 } else if (!(mti->mti_flags & LDD_F_NO_PRIMNODE)) {
399 rc = mgs_check_failover_reg(mti);
401 GOTO(out_nolock, rc);
404 OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_PAUSE_TARGET_REG, 10);
406 if (mti->mti_flags & LDD_F_WRITECONF) {
407 if (mti->mti_flags & LDD_F_SV_TYPE_MDT &&
408 mti->mti_stripe_index == 0) {
409 rc = mgs_erase_logs(tsi->tsi_env, mgs,
411 LCONSOLE_WARN("%s: Logs for fs %s were removed by user "
412 "request. All servers must be restarted "
413 "in order to regenerate the logs."
414 "\n", obd->obd_name, mti->mti_fsname);
415 } else if (mti->mti_flags &
416 (LDD_F_SV_TYPE_OST | LDD_F_SV_TYPE_MDT)) {
417 rc = mgs_erase_log(tsi->tsi_env, mgs, mti->mti_svname);
418 LCONSOLE_WARN("%s: Regenerating %s log by user "
420 obd->obd_name, mti->mti_svname);
422 mti->mti_flags |= LDD_F_UPDATE;
423 /* Erased logs means start from scratch. */
424 mti->mti_flags &= ~LDD_F_UPGRADE14;
426 GOTO(out_nolock, rc);
429 rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs, mti->mti_fsname, &fsdb);
431 CERROR("Can't get db for %s: %d\n", mti->mti_fsname, rc);
432 GOTO(out_nolock, rc);
436 * Log writing contention is handled by the fsdb_mutex.
438 * It should be alright if someone was reading while we were
439 * updating the logs - if we revoke at the end they will just update
440 * from where they left off.
443 if (mti->mti_flags & LDD_F_UPGRADE14) {
444 CERROR("Can't upgrade from 1.4 (%d)\n", rc);
448 if (mti->mti_flags & LDD_F_UPDATE) {
449 CDEBUG(D_MGS, "updating %s, index=%d\n", mti->mti_svname,
450 mti->mti_stripe_index);
452 /* create or update the target log
453 and update the client/mdt logs */
454 rc = mgs_write_log_target(tsi->tsi_env, mgs, mti, fsdb);
456 CERROR("Failed to write %s log (%d)\n",
457 mti->mti_svname, rc);
461 mti->mti_flags &= ~(LDD_F_VIRGIN | LDD_F_UPDATE |
462 LDD_F_NEED_INDEX | LDD_F_WRITECONF |
464 mti->mti_flags |= LDD_F_REWRITE_LDD;
468 mgs_revoke_lock(mgs, fsdb, CONFIG_T_CONFIG);
471 CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname,
472 mti->mti_stripe_index, rc);
473 /* An error flag is set in the mti reply rather than an error code */
475 mti->mti_flags |= LDD_F_ERROR;
477 /* send back the whole mti in the reply */
478 rep_mti = req_capsule_server_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO);
481 /* Flush logs to disk */
482 dt_sync(tsi->tsi_env, mgs->mgs_bottom);
486 /* Called whenever a target cleans up. */
487 static int mgs_target_del(struct tgt_session_info *tsi)
491 tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_DEL);
496 static int mgs_config_read(struct tgt_session_info *tsi)
498 struct ptlrpc_request *req = tgt_ses_req(tsi);
499 struct mgs_config_body *body;
504 body = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_CONFIG_BODY);
506 DEBUG_REQ(D_HA, req, "no mgs_config_body");
507 RETURN(err_serious(-EFAULT));
510 switch (body->mcb_type) {
511 case CONFIG_T_RECOVER:
512 rc = mgs_get_ir_logs(req);
514 case CONFIG_T_NODEMAP:
515 rc = nodemap_get_config_req(req->rq_export->exp_obd, req);
517 case CONFIG_T_CONFIG:
528 static int mgs_llog_open(struct tgt_session_info *tsi)
530 struct mgs_thread_info *mgi;
531 struct ptlrpc_request *req = tgt_ses_req(tsi);
537 rc = tgt_llog_open(tsi);
542 * For old clients there is no direct way of knowing which file system
543 * a client is operating at the MGS side. But we need to pick up those
544 * clients so that the MGS can mark the corresponding file system as
545 * non-IR capable because old clients are not ready to be notified.
547 * Therefore we attempt to detect the file systems name by hacking the
548 * llog operation which is currently used by the clients to fetch
549 * configuration logs. At present this is fine because this is the
550 * ONLY llog operation between mgc and the MGS.
552 * If extra llog operation are going to be added, this function needs
555 * When releases prior than 2.0 are not supported, the following code
558 mgi = mgs_env_info(tsi->tsi_env);
560 RETURN(PTR_ERR(mgi));
562 logname = req_capsule_client_get(tsi->tsi_pill, &RMF_NAME);
564 char *ptr = strrchr(logname, '-');
565 int len = (ptr != NULL) ? (int)(ptr - logname) : 0;
567 if (ptr == NULL || len >= sizeof(mgi->mgi_fsname)) {
568 if (strcmp(logname, PARAMS_FILENAME) != 0)
569 LCONSOLE_WARN("%s: non-config logname "
571 tgt_name(tsi->tsi_tgt),
573 /* not error, this can be llog test name */
575 strncpy(mgi->mgi_fsname, logname, len);
576 mgi->mgi_fsname[len] = 0;
578 rc = mgs_fsc_attach(tsi->tsi_env, tsi->tsi_exp,
580 if (rc && rc != -EEXIST) {
581 LCONSOLE_WARN("%s: Unable to add client %s "
582 "to file system %s: %d\n",
583 tgt_name(tsi->tsi_tgt),
584 libcfs_nid2str(req->rq_peer.nid),
585 mgi->mgi_fsname, rc);
591 CERROR("%s: no logname in request\n", tgt_name(tsi->tsi_tgt));
597 static inline int mgs_init_export(struct obd_export *exp)
599 struct mgs_export_data *data = &exp->u.eu_mgs_data;
601 /* init mgs_export_data for fsc */
602 spin_lock_init(&data->med_lock);
603 INIT_LIST_HEAD(&data->med_clients);
605 spin_lock(&exp->exp_lock);
606 exp->exp_connecting = 1;
607 spin_unlock(&exp->exp_lock);
609 /* self-export doesn't need client data and ldlm initialization */
610 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
611 &exp->exp_client_uuid)))
613 return ldlm_init_export(exp);
616 static inline int mgs_destroy_export(struct obd_export *exp)
620 target_destroy_export(exp);
621 mgs_client_free(exp);
623 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
624 &exp->exp_client_uuid)))
627 ldlm_destroy_export(exp);
632 static int mgs_extract_fs_pool(char * arg, char *fsname, char *poolname)
637 for (ptr = arg; (*ptr != '\0') && (*ptr != '.'); ptr++ ) {
645 strcpy(poolname, ptr);
650 static int mgs_iocontrol_nodemap(const struct lu_env *env,
651 struct mgs_device *mgs,
652 struct obd_ioctl_data *data)
654 struct lustre_cfg *lcfg = NULL;
657 const char *nodemap_name = NULL;
658 const char *nidstr = NULL;
659 const char *client_idstr = NULL;
660 const char *idtype_str = NULL;
663 char name_buf[LUSTRE_NODEMAP_NAME_LENGTH + 1];
665 unsigned long client_id;
672 if (data->ioc_type != LUSTRE_CFG_TYPE) {
673 CERROR("%s: unknown cfg record type: %d\n",
674 mgs->mgs_obd->obd_name, data->ioc_type);
675 GOTO(out, rc = -EINVAL);
678 if (data->ioc_plen1 > PAGE_SIZE)
679 GOTO(out, rc = -E2BIG);
681 OBD_ALLOC(lcfg, data->ioc_plen1);
683 GOTO(out, rc = -ENOMEM);
685 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
686 GOTO(out_lcfg, rc = -EFAULT);
688 cmd = lcfg->lcfg_command;
691 case LCFG_NODEMAP_ACTIVATE:
692 if (lcfg->lcfg_bufcount != 2)
693 GOTO(out_lcfg, rc = -EINVAL);
694 param = lustre_cfg_string(lcfg, 1);
695 if (strcmp(param, "1") == 0)
700 case LCFG_NODEMAP_ADD:
701 case LCFG_NODEMAP_DEL:
702 if (lcfg->lcfg_bufcount != 2)
703 GOTO(out_lcfg, rc = -EINVAL);
704 nodemap_name = lustre_cfg_string(lcfg, 1);
705 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
707 case LCFG_NODEMAP_TEST_NID:
708 if (lcfg->lcfg_bufcount != 2)
709 GOTO(out_lcfg, rc = -EINVAL);
710 nidstr = lustre_cfg_string(lcfg, 1);
711 nid = libcfs_str2nid(nidstr);
712 nodemap_test_nid(nid, name_buf, sizeof(name_buf));
713 rc = copy_to_user(data->ioc_pbuf1, name_buf,
714 MIN(data->ioc_plen1, sizeof(name_buf)));
716 GOTO(out_lcfg, rc = -EFAULT);
718 case LCFG_NODEMAP_TEST_ID:
719 if (lcfg->lcfg_bufcount != 4)
720 GOTO(out_lcfg, rc = -EINVAL);
721 nidstr = lustre_cfg_string(lcfg, 1);
722 idtype_str = lustre_cfg_string(lcfg, 2);
723 client_idstr = lustre_cfg_string(lcfg, 3);
725 nid = libcfs_str2nid(nidstr);
726 if (strcmp(idtype_str, "uid") == 0)
727 idtype = NODEMAP_UID;
729 idtype = NODEMAP_GID;
731 rc = kstrtoul(client_idstr, 10, &client_id);
733 GOTO(out_lcfg, rc = -EINVAL);
735 rc = nodemap_test_id(nid, idtype, client_id, &fs_id);
737 GOTO(out_lcfg, rc = -EINVAL);
739 if (data->ioc_plen1 < sizeof(fs_idstr))
740 GOTO(out_lcfg, rc = -EINVAL);
742 snprintf(fs_idstr, sizeof(fs_idstr), "%u", fs_id);
743 if (copy_to_user(data->ioc_pbuf1, fs_idstr,
744 sizeof(fs_idstr)) != 0)
745 GOTO(out_lcfg, rc = -EINVAL);
747 case LCFG_NODEMAP_ADD_RANGE:
748 case LCFG_NODEMAP_DEL_RANGE:
749 case LCFG_NODEMAP_ADD_UIDMAP:
750 case LCFG_NODEMAP_DEL_UIDMAP:
751 case LCFG_NODEMAP_ADD_GIDMAP:
752 case LCFG_NODEMAP_DEL_GIDMAP:
753 case LCFG_NODEMAP_SET_FILESET:
754 if (lcfg->lcfg_bufcount != 3)
755 GOTO(out_lcfg, rc = -EINVAL);
756 nodemap_name = lustre_cfg_string(lcfg, 1);
757 param = lustre_cfg_string(lcfg, 2);
758 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
760 case LCFG_NODEMAP_ADMIN:
761 case LCFG_NODEMAP_TRUSTED:
762 case LCFG_NODEMAP_DENY_UNKNOWN:
763 case LCFG_NODEMAP_SQUASH_UID:
764 case LCFG_NODEMAP_SQUASH_GID:
765 if (lcfg->lcfg_bufcount != 4)
766 GOTO(out_lcfg, rc = -EINVAL);
767 nodemap_name = lustre_cfg_string(lcfg, 1);
768 param = lustre_cfg_string(lcfg, 3);
769 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
776 CERROR("%s: OBD_IOC_NODEMAP command %X for %s: rc = %d\n",
777 mgs->mgs_obd->obd_name, lcfg->lcfg_command,
782 /* revoke nodemap lock */
783 rc = mgs_find_or_make_fsdb(env, mgs, LUSTRE_NODEMAP_NAME, &fsdb);
785 CWARN("%s: cannot make nodemap fsdb: rc = %d\n",
786 mgs->mgs_obd->obd_name, rc);
788 mgs_revoke_lock(mgs, fsdb, CONFIG_T_NODEMAP);
791 OBD_FREE(lcfg, data->ioc_plen1);
796 static int mgs_iocontrol_pool(const struct lu_env *env,
797 struct mgs_device *mgs,
798 struct obd_ioctl_data *data)
800 struct mgs_thread_info *mgi = mgs_env_info(env);
802 struct lustre_cfg *lcfg = NULL;
803 char *poolname = NULL;
806 OBD_ALLOC(poolname, LOV_MAXPOOLNAME + 1);
807 if (poolname == NULL)
810 if (data->ioc_type != LUSTRE_CFG_TYPE) {
811 CERROR("%s: unknown cfg record type: %d\n",
812 mgs->mgs_obd->obd_name, data->ioc_type);
813 GOTO(out_pool, rc = -EINVAL);
816 if (data->ioc_plen1 > PAGE_SIZE)
817 GOTO(out_pool, rc = -E2BIG);
819 OBD_ALLOC(lcfg, data->ioc_plen1);
821 GOTO(out_pool, rc = -ENOMEM);
823 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
824 GOTO(out_lcfg, rc = -EFAULT);
826 if (lcfg->lcfg_bufcount < 2)
827 GOTO(out_lcfg, rc = -EFAULT);
829 /* first arg is always <fsname>.<poolname> */
830 rc = mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), mgi->mgi_fsname,
835 switch (lcfg->lcfg_command) {
837 if (lcfg->lcfg_bufcount != 2)
838 GOTO(out_lcfg, rc = -EINVAL);
839 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_NEW, mgi->mgi_fsname,
843 if (lcfg->lcfg_bufcount != 3)
844 GOTO(out_lcfg, rc = -EINVAL);
845 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_ADD, mgi->mgi_fsname,
846 poolname, lustre_cfg_string(lcfg, 2));
849 if (lcfg->lcfg_bufcount != 3)
850 GOTO(out_lcfg, rc = -EINVAL);
851 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_REM, mgi->mgi_fsname,
852 poolname, lustre_cfg_string(lcfg, 2));
855 if (lcfg->lcfg_bufcount != 2)
856 GOTO(out_lcfg, rc = -EINVAL);
857 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_DEL, mgi->mgi_fsname,
865 CERROR("OBD_IOC_POOL err %d, cmd %X for pool %s.%s\n",
866 rc, lcfg->lcfg_command, mgi->mgi_fsname, poolname);
871 OBD_FREE(lcfg, data->ioc_plen1);
873 OBD_FREE(poolname, LOV_MAXPOOLNAME + 1);
877 /* from mdt_iocontrol */
878 static int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
879 void *karg, void __user *uarg)
881 struct mgs_device *mgs = exp2mgs_dev(exp);
882 struct obd_ioctl_data *data = karg;
887 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
889 rc = lu_env_init(&env, LCT_MG_THREAD);
895 case OBD_IOC_PARAM: {
896 struct mgs_thread_info *mgi = mgs_env_info(&env);
897 struct lustre_cfg *lcfg;
899 if (data->ioc_type != LUSTRE_CFG_TYPE) {
900 CERROR("%s: unknown cfg record type: %d\n",
901 mgs->mgs_obd->obd_name, data->ioc_type);
902 GOTO(out, rc = -EINVAL);
905 OBD_ALLOC(lcfg, data->ioc_plen1);
907 GOTO(out, rc = -ENOMEM);
908 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
909 GOTO(out_free, rc = -EFAULT);
911 if (lcfg->lcfg_bufcount < 1)
912 GOTO(out_free, rc = -EINVAL);
914 rc = mgs_setparam(&env, mgs, lcfg, mgi->mgi_fsname);
916 CERROR("%s: setparam err: rc = %d\n",
917 exp->exp_obd->obd_name, rc);
919 OBD_FREE(lcfg, data->ioc_plen1);
923 case OBD_IOC_REPLACE_NIDS: {
924 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
925 CERROR("No device name specified!\n");
930 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
931 CERROR("Device name is not NUL terminated!\n");
936 if (data->ioc_plen1 > MTI_NAME_MAXLEN) {
937 CERROR("Device name is too long\n");
942 if (!data->ioc_inllen2 || !data->ioc_inlbuf2) {
943 CERROR("No NIDs were specified!\n");
948 if (data->ioc_inlbuf2[data->ioc_inllen2 - 1] != 0) {
949 CERROR("NID list is not NUL terminated!\n");
954 /* replace nids in llog */
955 rc = mgs_replace_nids(&env, mgs, data->ioc_inlbuf1,
958 CERROR("%s: error replacing nids: rc = %d\n",
959 exp->exp_obd->obd_name, rc);
965 rc = mgs_iocontrol_pool(&env, mgs, data);
968 case OBD_IOC_NODEMAP:
969 rc = mgs_iocontrol_nodemap(&env, mgs, data);
972 case OBD_IOC_CATLOGLIST:
973 rc = mgs_list_logs(&env, mgs, data);
975 case OBD_IOC_LLOG_CANCEL:
976 case OBD_IOC_LLOG_REMOVE:
977 case OBD_IOC_LLOG_CHECK:
978 case OBD_IOC_LLOG_INFO:
979 case OBD_IOC_LLOG_PRINT: {
980 struct llog_ctxt *ctxt;
982 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
983 rc = llog_ioctl(&env, ctxt, cmd, data);
989 CERROR("%s: unknown command %#x\n",
990 mgs->mgs_obd->obd_name, cmd);
999 static int mgs_connect_to_osd(struct mgs_device *m, const char *nextdev)
1001 struct obd_connect_data *data = NULL;
1002 struct obd_device *obd;
1006 OBD_ALLOC_PTR(data);
1010 obd = class_name2obd(nextdev);
1012 CERROR("can't locate next device: %s\n", nextdev);
1013 GOTO(out, rc = -ENOTCONN);
1016 data->ocd_version = LUSTRE_VERSION_CODE;
1018 rc = obd_connect(NULL, &m->mgs_bottom_exp, obd,
1019 &obd->obd_uuid, data, NULL);
1021 CERROR("cannot connect to next dev %s (%d)\n", nextdev, rc);
1025 m->mgs_bottom = lu2dt_dev(m->mgs_bottom_exp->exp_obd->obd_lu_dev);
1026 m->mgs_dt_dev.dd_lu_dev.ld_site = m->mgs_bottom->dd_lu_dev.ld_site;
1027 LASSERT(m->mgs_dt_dev.dd_lu_dev.ld_site);
1033 static struct tgt_handler mgs_mgs_handlers[] = {
1034 TGT_RPC_HANDLER(MGS_FIRST_OPC,
1035 0, MGS_CONNECT, mgs_connect,
1036 &RQF_CONNECT, LUSTRE_OBD_VERSION),
1037 TGT_RPC_HANDLER(MGS_FIRST_OPC,
1038 0, MGS_DISCONNECT, mgs_disconnect,
1039 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
1040 TGT_MGS_HDL_VAR(0, MGS_EXCEPTION, mgs_exception),
1041 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 13, 53, 0)
1042 TGT_MGS_HDL (HABEO_REFERO | MUTABOR, MGS_SET_INFO, mgs_set_info),
1044 TGT_MGS_HDL (HABEO_REFERO | MUTABOR, MGS_TARGET_REG, mgs_target_reg),
1045 TGT_MGS_HDL_VAR(0, MGS_TARGET_DEL, mgs_target_del),
1046 TGT_MGS_HDL (HABEO_REFERO, MGS_CONFIG_READ, mgs_config_read),
1049 static struct tgt_handler mgs_obd_handlers[] = {
1050 TGT_OBD_HDL(0, OBD_PING, tgt_obd_ping),
1053 static struct tgt_handler mgs_dlm_handlers[] = {
1054 [LDLM_ENQUEUE - LDLM_FIRST_OPC] = {
1055 .th_name = "LDLM_ENQUEUE",
1056 /* don't use th_fail_id for MGS to don't interfere with MDS tests.
1057 * * There are no tests for MGS with OBD_FAIL_LDLM_ENQUEUE_NET so it
1058 * * is safe. If such tests will be needed we have to distinguish
1059 * * MDS and MGS fail ids, e.g use OBD_FAIL_MGS_ENQUEUE_NET for MGS
1060 * * instead of common OBD_FAIL_LDLM_ENQUEUE_NET */
1062 .th_opc = LDLM_ENQUEUE,
1063 .th_flags = HABEO_CLAVIS,
1064 .th_act = tgt_enqueue,
1065 .th_fmt = &RQF_LDLM_ENQUEUE,
1066 .th_version = LUSTRE_DLM_VERSION,
1070 static struct tgt_handler mgs_llog_handlers[] = {
1071 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, mgs_llog_open),
1072 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
1073 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
1074 TGT_LLOG_HDL_VAR(0, LLOG_ORIGIN_HANDLE_CLOSE, tgt_llog_close),
1075 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
1078 static struct tgt_opc_slice mgs_common_slice[] = {
1080 .tos_opc_start = MGS_FIRST_OPC,
1081 .tos_opc_end = MGS_LAST_OPC,
1082 .tos_hs = mgs_mgs_handlers
1085 .tos_opc_start = OBD_FIRST_OPC,
1086 .tos_opc_end = OBD_LAST_OPC,
1087 .tos_hs = mgs_obd_handlers
1090 .tos_opc_start = LDLM_FIRST_OPC,
1091 .tos_opc_end = LDLM_LAST_OPC,
1092 .tos_hs = mgs_dlm_handlers
1095 .tos_opc_start = LLOG_FIRST_OPC,
1096 .tos_opc_end = LLOG_LAST_OPC,
1097 .tos_hs = mgs_llog_handlers
1100 .tos_opc_start = SEC_FIRST_OPC,
1101 .tos_opc_end = SEC_LAST_OPC,
1102 .tos_hs = tgt_sec_ctx_handlers
1109 static int mgs_init0(const struct lu_env *env, struct mgs_device *mgs,
1110 struct lu_device_type *ldt, struct lustre_cfg *lcfg)
1112 struct ptlrpc_service_conf conf;
1113 struct obd_device *obd;
1114 struct lustre_mount_info *lmi;
1115 struct llog_ctxt *ctxt;
1116 struct fs_db *fsdb = NULL;
1117 struct fs_db *fsdb_srpc = NULL;
1122 lmi = server_get_mount(lustre_cfg_string(lcfg, 0));
1126 mgs->mgs_dt_dev.dd_lu_dev.ld_ops = &mgs_lu_ops;
1128 rc = mgs_connect_to_osd(mgs, lustre_cfg_string(lcfg, 3));
1132 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1135 mgs->mgs_obd->obd_lu_dev = &mgs->mgs_dt_dev.dd_lu_dev;
1137 obd->u.obt.obt_magic = OBT_MAGIC;
1138 obd->u.obt.obt_instance = 0;
1140 /* namespace for mgs llog */
1141 obd->obd_namespace = ldlm_namespace_new(obd ,"MGS",
1142 LDLM_NAMESPACE_SERVER,
1143 LDLM_NAMESPACE_MODEST,
1145 if (obd->obd_namespace == NULL)
1146 GOTO(err_ops, rc = -ENOMEM);
1148 /* No recovery for MGCs */
1149 obd->obd_replayable = 0;
1151 rc = tgt_init(env, &mgs->mgs_lut, obd, mgs->mgs_bottom,
1152 mgs_common_slice, OBD_FAIL_MGS_ALL_REQUEST_NET,
1153 OBD_FAIL_MGS_ALL_REPLY_NET);
1157 rc = mgs_fs_setup(env, mgs);
1159 CERROR("%s: MGS filesystem method init failed: rc = %d\n",
1164 rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT,
1165 obd, &llog_osd_ops);
1169 /* XXX: we need this trick till N:1 stack is supported
1170 * set "current" directory for named llogs */
1171 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1173 ctxt->loc_dir = mgs->mgs_configs_dir;
1174 llog_ctxt_put(ctxt);
1176 /* Internal mgs setup */
1177 mgs_init_fsdb_list(mgs);
1178 mutex_init(&mgs->mgs_mutex);
1179 mgs->mgs_start_time = cfs_time_current_sec();
1180 spin_lock_init(&mgs->mgs_lock);
1181 mutex_init(&mgs->mgs_health_mutex);
1183 rc = lproc_mgs_setup(mgs, lustre_cfg_string(lcfg, 3));
1185 CERROR("%s: cannot initialize proc entry: rc = %d\n",
1190 /* Setup params fsdb and log, so that other servers can make a local
1191 * copy successfully when they are mounted. See LU-4783 */
1192 rc = mgs_params_fsdb_setup(env, mgs, fsdb);
1194 /* params fsdb and log can be setup later */
1195 CERROR("%s: %s fsdb and log setup failed: rc = %d\n",
1196 obd->obd_name, PARAMS_FILENAME, rc);
1198 /* Setup _mgs fsdb, useful for srpc */
1199 mgs__mgs_fsdb_setup(env, mgs, fsdb_srpc);
1201 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
1202 "mgs_ldlm_client", &obd->obd_ldlm_client);
1204 conf = (typeof(conf)) {
1205 .psc_name = LUSTRE_MGS_NAME,
1206 .psc_watchdog_factor = MGS_SERVICE_WATCHDOG_FACTOR,
1208 .bc_nbufs = MGS_NBUFS,
1209 .bc_buf_size = MGS_BUFSIZE,
1210 .bc_req_max_size = MGS_MAXREQSIZE,
1211 .bc_rep_max_size = MGS_MAXREPSIZE,
1212 .bc_req_portal = MGS_REQUEST_PORTAL,
1213 .bc_rep_portal = MGC_REPLY_PORTAL,
1216 .tc_thr_name = "ll_mgs",
1217 .tc_nthrs_init = MGS_NTHRS_INIT,
1218 .tc_nthrs_max = MGS_NTHRS_MAX,
1219 .tc_ctx_tags = LCT_MG_THREAD,
1222 .so_req_handler = tgt_request_handle,
1223 .so_req_printer = target_print_req,
1227 /* Start the service threads */
1228 mgs->mgs_service = ptlrpc_register_service(&conf, obd->obd_proc_entry);
1229 if (IS_ERR(mgs->mgs_service)) {
1230 rc = PTR_ERR(mgs->mgs_service);
1231 CERROR("failed to start mgs service: %d\n", rc);
1232 mgs->mgs_service = NULL;
1233 GOTO(err_lproc, rc);
1236 ping_evictor_start();
1238 CDEBUG(D_INFO, "MGS %s started\n", obd->obd_name);
1240 /* device stack is not yet fully setup to keep no objects behind */
1241 lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0);
1244 mgs_params_fsdb_cleanup(env, mgs);
1245 lproc_mgs_cleanup(mgs);
1247 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1249 ctxt->loc_dir = NULL;
1250 llog_cleanup(env, ctxt);
1253 tgt_fini(env, &mgs->mgs_lut);
1255 /* No extra cleanup needed for llog_init_commit_thread() */
1256 mgs_fs_cleanup(env, mgs);
1258 ldlm_namespace_free(obd->obd_namespace, NULL, 0);
1259 obd->obd_namespace = NULL;
1261 lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0);
1262 if (!cfs_hash_is_empty(mgs2lu_dev(mgs)->ld_site->ls_obj_hash)) {
1263 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
1264 lu_site_print(env, mgs2lu_dev(mgs)->ld_site, &msgdata,
1267 obd_disconnect(mgs->mgs_bottom_exp);
1270 server_put_mount(lustre_cfg_string(lcfg, 0), true);
1274 static struct lu_device *mgs_device_free(const struct lu_env *env,
1275 struct lu_device *lu)
1277 struct mgs_device *mgs = lu2mgs_dev(lu);
1280 dt_device_fini(&mgs->mgs_dt_dev);
1285 static int mgs_process_config(const struct lu_env *env,
1286 struct lu_device *dev,
1287 struct lustre_cfg *lcfg)
1293 static int mgs_object_init(const struct lu_env *env, struct lu_object *o,
1294 const struct lu_object_conf *unused)
1296 struct mgs_device *d = lu2mgs_dev(o->lo_dev);
1297 struct lu_device *under;
1298 struct lu_object *below;
1302 /* do no set .do_ops as mgs calls to bottom osd directly */
1304 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
1305 PFID(lu_object_fid(o)));
1307 under = &d->mgs_bottom->dd_lu_dev;
1308 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
1310 lu_object_add(o, below);
1317 static void mgs_object_free(const struct lu_env *env, struct lu_object *o)
1319 struct mgs_object *obj = lu2mgs_obj(o);
1320 struct lu_object_header *h = o->lo_header;
1322 dt_object_fini(&obj->mgo_obj);
1323 lu_object_header_fini(h);
1327 static int mgs_object_print(const struct lu_env *env, void *cookie,
1328 lu_printer_t p, const struct lu_object *l)
1330 const struct mgs_object *o = lu2mgs_obj((struct lu_object *) l);
1332 return (*p)(env, cookie, LUSTRE_MGS_NAME"-object@%p", o);
1335 static struct lu_object_operations mgs_lu_obj_ops = {
1336 .loo_object_init = mgs_object_init,
1337 .loo_object_free = mgs_object_free,
1338 .loo_object_print = mgs_object_print,
1341 static struct lu_object *mgs_object_alloc(const struct lu_env *env,
1342 const struct lu_object_header *hdr,
1343 struct lu_device *d)
1345 struct lu_object_header *h;
1346 struct mgs_object *o;
1347 struct lu_object *l;
1349 LASSERT(hdr == NULL);
1353 l = &o->mgo_obj.do_lu;
1356 lu_object_header_init(h);
1357 dt_object_init(&o->mgo_obj, h, d);
1358 lu_object_add_top(h, l);
1360 l->lo_ops = &mgs_lu_obj_ops;
1368 const struct lu_device_operations mgs_lu_ops = {
1369 .ldo_object_alloc = mgs_object_alloc,
1370 .ldo_process_config = mgs_process_config,
1373 static struct lu_device *mgs_device_alloc(const struct lu_env *env,
1374 struct lu_device_type *type,
1375 struct lustre_cfg *lcfg)
1377 struct mgs_device *mgs;
1378 struct lu_device *ludev;
1382 ludev = ERR_PTR(-ENOMEM);
1386 ludev = mgs2lu_dev(mgs);
1387 dt_device_init(&mgs->mgs_dt_dev, type);
1388 rc = mgs_init0(env, mgs, type, lcfg);
1390 mgs_device_free(env, ludev);
1391 ludev = ERR_PTR(rc);
1397 static struct lu_device *mgs_device_fini(const struct lu_env *env,
1398 struct lu_device *d)
1400 struct mgs_device *mgs = lu2mgs_dev(d);
1401 struct obd_device *obd = mgs->mgs_obd;
1402 struct llog_ctxt *ctxt;
1406 LASSERT(mgs->mgs_bottom);
1408 class_disconnect_exports(obd);
1410 ping_evictor_stop();
1412 mutex_lock(&mgs->mgs_health_mutex);
1413 ptlrpc_unregister_service(mgs->mgs_service);
1414 mutex_unlock(&mgs->mgs_health_mutex);
1416 mgs_params_fsdb_cleanup(env, mgs);
1417 mgs_cleanup_fsdb_list(mgs);
1419 ldlm_namespace_free_prior(obd->obd_namespace, NULL, 1);
1420 obd_exports_barrier(obd);
1421 obd_zombie_barrier();
1423 tgt_fini(env, &mgs->mgs_lut);
1424 lproc_mgs_cleanup(mgs);
1426 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1428 ctxt->loc_dir = NULL;
1429 llog_cleanup(env, ctxt);
1432 mgs_fs_cleanup(env, mgs);
1434 ldlm_namespace_free_post(obd->obd_namespace);
1435 obd->obd_namespace = NULL;
1437 lu_site_purge(env, d->ld_site, ~0);
1438 if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
1439 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
1440 lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
1443 LASSERT(mgs->mgs_bottom_exp);
1444 obd_disconnect(mgs->mgs_bottom_exp);
1446 server_put_mount(obd->obd_name, true);
1451 /* context key constructor/destructor: mgs_key_init, mgs_key_fini */
1452 LU_KEY_INIT_FINI(mgs, struct mgs_thread_info);
1454 LU_TYPE_INIT_FINI(mgs, &mgs_thread_key);
1456 LU_CONTEXT_KEY_DEFINE(mgs, LCT_MG_THREAD);
1458 static struct lu_device_type_operations mgs_device_type_ops = {
1459 .ldto_init = mgs_type_init,
1460 .ldto_fini = mgs_type_fini,
1462 .ldto_start = mgs_type_start,
1463 .ldto_stop = mgs_type_stop,
1465 .ldto_device_alloc = mgs_device_alloc,
1466 .ldto_device_free = mgs_device_free,
1468 .ldto_device_fini = mgs_device_fini
1471 static struct lu_device_type mgs_device_type = {
1472 .ldt_tags = LU_DEVICE_DT,
1473 .ldt_name = LUSTRE_MGS_NAME,
1474 .ldt_ops = &mgs_device_type_ops,
1475 .ldt_ctx_tags = LCT_MG_THREAD
1478 static int mgs_obd_connect(const struct lu_env *env, struct obd_export **exp,
1479 struct obd_device *obd, struct obd_uuid *cluuid,
1480 struct obd_connect_data *data, void *localdata)
1482 struct obd_export *lexp;
1483 struct lustre_handle conn = { 0 };
1488 if (exp == NULL || obd == NULL || cluuid == NULL)
1491 rc = class_connect(&conn, obd, cluuid);
1495 lexp = class_conn2export(&conn);
1500 data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
1502 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1503 data->ocd_connect_flags2 &= MGS_CONNECT_SUPPORTED2;
1505 data->ocd_version = LUSTRE_VERSION_CODE;
1506 lexp->exp_connect_data = *data;
1509 tgt_counter_incr(lexp, LPROC_MGS_CONNECT);
1511 rc = mgs_export_stats_init(obd, lexp, localdata);
1513 class_disconnect(lexp);
1520 static int mgs_obd_reconnect(const struct lu_env *env, struct obd_export *exp,
1521 struct obd_device *obd, struct obd_uuid *cluuid,
1522 struct obd_connect_data *data, void *localdata)
1526 if (exp == NULL || obd == NULL || cluuid == NULL)
1529 tgt_counter_incr(exp, LPROC_MGS_CONNECT);
1532 data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
1534 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1535 data->ocd_connect_flags2 &= MGS_CONNECT_SUPPORTED2;
1537 data->ocd_version = LUSTRE_VERSION_CODE;
1538 exp->exp_connect_data = *data;
1541 RETURN(mgs_export_stats_init(obd, exp, localdata));
1544 static int mgs_obd_disconnect(struct obd_export *exp)
1552 mgs_fsc_cleanup(exp);
1554 class_export_get(exp);
1555 tgt_counter_incr(exp, LPROC_MGS_DISCONNECT);
1557 rc = server_disconnect_export(exp);
1558 class_export_put(exp);
1562 static int mgs_health_check(const struct lu_env *env, struct obd_device *obd)
1564 struct mgs_device *mgs = lu2mgs_dev(obd->obd_lu_dev);
1567 mutex_lock(&mgs->mgs_health_mutex);
1568 rc |= ptlrpc_service_health_check(mgs->mgs_service);
1569 mutex_unlock(&mgs->mgs_health_mutex);
1571 return rc != 0 ? 1 : 0;
1574 /* use obd ops to offer management infrastructure */
1575 static struct obd_ops mgs_obd_device_ops = {
1576 .o_owner = THIS_MODULE,
1577 .o_connect = mgs_obd_connect,
1578 .o_reconnect = mgs_obd_reconnect,
1579 .o_disconnect = mgs_obd_disconnect,
1580 .o_init_export = mgs_init_export,
1581 .o_destroy_export = mgs_destroy_export,
1582 .o_iocontrol = mgs_iocontrol,
1583 .o_health_check = mgs_health_check,
1586 static int __init mgs_init(void)
1588 return class_register_type(&mgs_obd_device_ops, NULL, true, NULL,
1589 LUSTRE_MGS_NAME, &mgs_device_type);
1592 static void __exit mgs_exit(void)
1594 class_unregister_type(LUSTRE_MGS_NAME);
1597 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
1598 MODULE_DESCRIPTION("Lustre Management Server (MGS)");
1599 MODULE_VERSION(LUSTRE_VERSION_STRING);
1600 MODULE_LICENSE("GPL");
1602 module_init(mgs_init);
1603 module_exit(mgs_exit);