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, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/mgs/mgs_handler.c
33 * Author: Nathan Rutman <nathan@clusterfs.com>
34 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
35 * Author: Mikhail Pershin <tappro@whamcloud.com>
38 #define DEBUG_SUBSYSTEM S_MGS
39 #define D_MGS D_CONFIG
41 #include <obd_class.h>
42 #include <lprocfs_status.h>
43 #include <uapi/linux/lustre/lustre_ioctl.h>
44 #include <uapi/linux/lustre/lustre_param.h>
45 #include <uapi/linux/lustre/lustre_barrier_user.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, 18, 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;
108 mgi = mgs_env_info(tsi->tsi_env);
110 RETURN(err_serious(PTR_ERR(mgi)));
112 msp = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_SEND_PARAM);
114 RETURN(err_serious(-EFAULT));
116 param_len = strnlen(msp->mgs_param, sizeof(msp->mgs_param));
117 if (param_len == 0 || param_len == sizeof(msp->mgs_param))
120 /* We only allow '*.lov.stripe{size,count,offset}=*' from an RPC. */
121 s = strchr(msp->mgs_param, '.');
125 if (!str_starts_with(s + 1, "lov.stripesize=") &&
126 !str_starts_with(s + 1, "lov.stripecount=") &&
127 !str_starts_with(s + 1, "lov.stripeoffset="))
131 CDEBUG(D_MGS, "%s: ignoring set info '%s'\n",
132 tgt_name(tsi->tsi_tgt), msp->mgs_param);
144 static int mgs_completion_ast_generic(struct ldlm_lock *lock, __u64 flags,
145 void *cbdata, enum ast_type type)
149 if (!(flags & LDLM_FL_BLOCKED_MASK)) {
152 /* l_ast_data is used as a marker to avoid cancel ldlm lock
153 * twice. See LU-2317. */
154 lock_res_and_lock(lock);
155 fsdb = (struct fs_db *)lock->l_ast_data;
156 lock->l_ast_data = NULL;
157 unlock_res_and_lock(lock);
160 struct lustre_handle lockh;
164 /* clear the bit before lock put */
165 clear_bit(FSDB_REVOKING_LOCK,
169 clear_bit(FSDB_REVOKING_PARAMS,
173 mgs_ir_notify_complete(fsdb);
181 ldlm_lock2handle(lock, &lockh);
182 ldlm_lock_decref_and_cancel(&lockh, LCK_EX);
186 RETURN(ldlm_completion_ast(lock, flags, cbdata));
189 static int mgs_completion_ast_config(struct ldlm_lock *lock, __u64 flags,
192 return mgs_completion_ast_generic(lock, flags, cbdata, AST_CONFIG);
195 static int mgs_completion_ast_params(struct ldlm_lock *lock, __u64 flags,
198 return mgs_completion_ast_generic(lock, flags, cbdata, AST_PARAMS);
201 static int mgs_completion_ast_ir(struct ldlm_lock *lock, __u64 flags,
204 return mgs_completion_ast_generic(lock, flags, cbdata, AST_IR);
207 static int mgs_completion_ast_barrier(struct ldlm_lock *lock, __u64 flags,
210 return mgs_completion_ast_generic(lock, flags, cbdata, AST_BARRIER);
213 void mgs_revoke_lock(struct mgs_device *mgs, struct fs_db *fsdb, int type)
215 ldlm_completion_callback cp = NULL;
216 struct lustre_handle lockh = {
219 struct ldlm_res_id res_id;
220 __u64 flags = LDLM_FL_ATOMIC_CB;
224 LASSERT(fsdb->fsdb_name[0] != '\0');
225 rc = mgc_fsname2resid(fsdb->fsdb_name, &res_id, type);
228 case CONFIG_T_CONFIG:
229 case CONFIG_T_NODEMAP:
230 cp = mgs_completion_ast_config;
231 if (test_and_set_bit(FSDB_REVOKING_LOCK, &fsdb->fsdb_flags))
234 case CONFIG_T_PARAMS:
235 cp = mgs_completion_ast_params;
236 if (test_and_set_bit(FSDB_REVOKING_PARAMS, &fsdb->fsdb_flags))
239 case CONFIG_T_RECOVER:
240 cp = mgs_completion_ast_ir;
242 case CONFIG_T_BARRIER:
243 cp = mgs_completion_ast_barrier;
251 rc = ldlm_cli_enqueue_local(NULL, mgs->mgs_obd->obd_namespace,
252 &res_id, LDLM_PLAIN, NULL, LCK_EX,
253 &flags, ldlm_blocking_ast, cp,
254 NULL, fsdb, 0, LVB_T_NONE, NULL,
256 if (rc != ELDLM_OK) {
257 CERROR("%s: can't take cfg lock for %#llx/%#llx : rc = %d\n",
258 mgs->mgs_obd->obd_name,
259 le64_to_cpu(res_id.name[0]),
260 le64_to_cpu(res_id.name[1]), rc);
262 if (type == CONFIG_T_CONFIG)
263 clear_bit(FSDB_REVOKING_LOCK,
266 if (type == CONFIG_T_PARAMS)
267 clear_bit(FSDB_REVOKING_PARAMS,
270 /* lock has been cancelled in completion_ast. */
279 static int mgs_check_target(const struct lu_env *env,
280 struct mgs_device *mgs,
281 struct mgs_target_info *mti)
286 rc = mgs_check_index(env, mgs, mti);
288 LCONSOLE_ERROR_MSG(0x13b, "%s claims to have registered, but "
289 "this MGS does not know about it, preventing "
290 "registration.\n", mti->mti_svname);
292 } else if (rc == -1) {
293 LCONSOLE_ERROR_MSG(0x13c, "Client log %s-client has "
294 "disappeared! Regenerating all logs.\n",
296 mti->mti_flags |= LDD_F_WRITECONF;
299 /* Index is correctly marked as used */
306 /* Ensure this is not a failover node that is connecting first*/
307 static int mgs_check_failover_reg(struct mgs_target_info *mti)
313 ptr = mti->mti_params;
314 while (class_find_param(ptr, PARAM_FAILNODE, &ptr) == 0) {
315 while (class_parse_nid_quiet(ptr, &nid, &ptr) == 0) {
316 for (i = 0; i < mti->mti_nid_count; i++) {
317 if (nid == mti->mti_nids[i]) {
318 LCONSOLE_WARN("Denying initial registration attempt from nid %s, specified as failover\n",
319 libcfs_nid2str(nid));
320 return -EADDRNOTAVAIL;
328 /* Called whenever a target starts up. Flags indicate first connect, etc. */
329 static int mgs_target_reg(struct tgt_session_info *tsi)
331 struct obd_device *obd = tsi->tsi_exp->exp_obd;
332 struct mgs_device *mgs = exp2mgs_dev(tsi->tsi_exp);
333 struct mgs_target_info *mti, *rep_mti;
334 struct fs_db *b_fsdb = NULL; /* barrier fsdb */
335 struct fs_db *c_fsdb = NULL; /* config fsdb */
336 char barrier_name[20];
342 rc = lu_env_refill((struct lu_env *)tsi->tsi_env);
344 return err_serious(rc);
346 tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_REG);
348 mti = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO);
350 DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no mgs_send_param");
351 RETURN(err_serious(-EFAULT));
354 down_read(&mgs->mgs_barrier_rwsem);
356 if (OCD_HAS_FLAG(&tgt_ses_req(tsi)->rq_export->exp_connect_data,
358 opc = mti->mti_flags & LDD_F_OPC_MASK;
362 if (opc == LDD_F_OPC_READY) {
363 CDEBUG(D_MGS, "fs: %s index: %d is ready to reconnect.\n",
364 mti->mti_fsname, mti->mti_stripe_index);
365 rc = mgs_ir_update(tsi->tsi_env, mgs, mti);
367 LASSERT(!(mti->mti_flags & LDD_F_IR_CAPABLE));
368 CERROR("%s: Update IR return failure: rc = %d\n",
369 mti->mti_fsname, rc);
372 GOTO(out_norevoke, rc);
375 /* Do not support unregistering right now. */
376 if (opc != LDD_F_OPC_REG)
377 GOTO(out_norevoke, rc = -EINVAL);
379 snprintf(barrier_name, sizeof(barrier_name) - 1, "%s-%s",
380 mti->mti_fsname, BARRIER_FILENAME);
381 rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs, barrier_name, &b_fsdb);
383 CERROR("%s: Can't get db for %s: rc = %d\n",
384 mti->mti_fsname, barrier_name, rc);
386 GOTO(out_norevoke, rc);
389 CDEBUG(D_MGS, "fs: %s index: %d is registered to MGS.\n",
390 mti->mti_fsname, mti->mti_stripe_index);
392 if (mti->mti_flags & LDD_F_SV_TYPE_MDT) {
393 if (b_fsdb->fsdb_barrier_status == BS_FREEZING_P1 ||
394 b_fsdb->fsdb_barrier_status == BS_FREEZING_P2 ||
395 b_fsdb->fsdb_barrier_status == BS_FROZEN) {
396 LCONSOLE_WARN("%s: the system is in barrier, refuse "
397 "the connection from MDT %s temporary\n",
398 obd->obd_name, mti->mti_svname);
400 GOTO(out_norevoke, rc = -EBUSY);
403 if (!(exp_connect_flags(tsi->tsi_exp) & OBD_CONNECT_BARRIER) &&
404 !b_fsdb->fsdb_barrier_disabled) {
405 LCONSOLE_WARN("%s: the MDT %s does not support write "
406 "barrier, so disable barrier on the "
408 obd->obd_name, mti->mti_svname);
410 b_fsdb->fsdb_barrier_disabled = 1;
414 if (mti->mti_flags & LDD_F_NEED_INDEX)
415 mti->mti_flags |= LDD_F_WRITECONF;
417 if (!(mti->mti_flags & (LDD_F_WRITECONF | LDD_F_UPDATE))) {
418 /* We're just here as a startup ping. */
419 CDEBUG(D_MGS, "Server %s is running on %s\n",
420 mti->mti_svname, obd_export_nid2str(tsi->tsi_exp));
421 rc = mgs_check_target(tsi->tsi_env, mgs, mti);
422 /* above will set appropriate mti flags */
424 /* Nothing wrong, or fatal error */
425 GOTO(out_norevoke, rc);
426 } else if (!(mti->mti_flags & LDD_F_NO_PRIMNODE)) {
427 rc = mgs_check_failover_reg(mti);
429 GOTO(out_norevoke, rc);
432 OBD_FAIL_TIMEOUT(OBD_FAIL_MGS_PAUSE_TARGET_REG, 10);
434 if (mti->mti_flags & LDD_F_WRITECONF) {
435 if (mti->mti_flags & LDD_F_SV_TYPE_MDT &&
436 mti->mti_stripe_index == 0) {
437 mgs_put_fsdb(mgs, b_fsdb);
439 rc = mgs_erase_logs(tsi->tsi_env, mgs,
441 LCONSOLE_WARN("%s: Logs for fs %s were removed by user "
442 "request. All servers must be restarted "
443 "in order to regenerate the logs: rc = %d"
444 "\n", obd->obd_name, mti->mti_fsname, rc);
445 if (rc && rc != -ENOENT)
446 GOTO(out_norevoke, rc);
448 rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs,
449 barrier_name, &b_fsdb);
451 CERROR("Can't get db for %s: %d\n",
454 GOTO(out_norevoke, rc);
457 if (!(exp_connect_flags(tsi->tsi_exp) &
458 OBD_CONNECT_BARRIER)) {
459 LCONSOLE_WARN("%s: the MDT %s does not support "
460 "write barrier, disable barrier "
461 "on the whole system.\n",
462 obd->obd_name, mti->mti_svname);
464 b_fsdb->fsdb_barrier_disabled = 1;
466 } else if (mti->mti_flags &
467 (LDD_F_SV_TYPE_OST | LDD_F_SV_TYPE_MDT)) {
468 rc = mgs_erase_log(tsi->tsi_env, mgs, mti->mti_svname);
469 LCONSOLE_WARN("%s: Regenerating %s log by user "
470 "request: rc = %d\n",
471 obd->obd_name, mti->mti_svname, rc);
473 GOTO(out_norevoke, rc);
476 mti->mti_flags |= LDD_F_UPDATE;
479 rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs, mti->mti_fsname, &c_fsdb);
481 CERROR("Can't get db for %s: %d\n", mti->mti_fsname, rc);
483 GOTO(out_norevoke, rc);
487 * Log writing contention is handled by the fsdb_mutex.
489 * It should be alright if someone was reading while we were
490 * updating the logs - if we revoke at the end they will just update
491 * from where they left off.
493 if (mti->mti_flags & LDD_F_UPDATE) {
494 CDEBUG(D_MGS, "updating %s, index=%d\n", mti->mti_svname,
495 mti->mti_stripe_index);
497 /* create or update the target log
498 and update the client/mdt logs */
499 rc = mgs_write_log_target(tsi->tsi_env, mgs, mti, c_fsdb);
501 CERROR("Failed to write %s log (%d)\n",
502 mti->mti_svname, rc);
506 mti->mti_flags &= ~(LDD_F_VIRGIN | LDD_F_UPDATE |
507 LDD_F_NEED_INDEX | LDD_F_WRITECONF);
508 mti->mti_flags |= LDD_F_REWRITE_LDD;
512 mgs_revoke_lock(mgs, c_fsdb, CONFIG_T_CONFIG);
515 if (!rc && mti->mti_flags & LDD_F_SV_TYPE_MDT && b_fsdb) {
517 rc = mgs_find_or_make_fsdb(tsi->tsi_env, mgs,
518 mti->mti_fsname, &c_fsdb);
520 CERROR("Fail to get db for %s: %d\n",
521 mti->mti_fsname, rc);
525 memcpy(b_fsdb->fsdb_mdt_index_map,
526 c_fsdb->fsdb_mdt_index_map, INDEX_MAP_SIZE);
527 b_fsdb->fsdb_mdt_count = c_fsdb->fsdb_mdt_count;
531 up_read(&mgs->mgs_barrier_rwsem);
533 CDEBUG(D_MGS, "replying with %s, index=%d, rc=%d\n", mti->mti_svname,
534 mti->mti_stripe_index, rc);
535 /* An error flag is set in the mti reply rather than an error code */
537 mti->mti_flags |= LDD_F_ERROR;
539 /* send back the whole mti in the reply */
540 rep_mti = req_capsule_server_get(tsi->tsi_pill, &RMF_MGS_TARGET_INFO);
543 /* Flush logs to disk */
544 dt_sync(tsi->tsi_env, mgs->mgs_bottom);
546 mgs_put_fsdb(mgs, b_fsdb);
548 mgs_put_fsdb(mgs, c_fsdb);
552 /* Called whenever a target cleans up. */
553 static int mgs_target_del(struct tgt_session_info *tsi)
557 tgt_counter_incr(tsi->tsi_exp, LPROC_MGS_TARGET_DEL);
562 static int mgs_config_read(struct tgt_session_info *tsi)
564 struct ptlrpc_request *req = tgt_ses_req(tsi);
565 struct mgs_config_body *body;
570 body = req_capsule_client_get(tsi->tsi_pill, &RMF_MGS_CONFIG_BODY);
572 DEBUG_REQ(D_HA, req, "no mgs_config_body");
573 RETURN(err_serious(-EFAULT));
576 switch (body->mcb_type) {
577 case CONFIG_T_RECOVER:
578 rc = mgs_get_ir_logs(req);
580 case CONFIG_T_NODEMAP:
581 rc = nodemap_get_config_req(req->rq_export->exp_obd, req);
583 case CONFIG_T_CONFIG:
594 static int mgs_llog_open(struct tgt_session_info *tsi)
596 struct mgs_thread_info *mgi;
597 struct ptlrpc_request *req = tgt_ses_req(tsi);
603 rc = tgt_llog_open(tsi);
608 * For old clients there is no direct way of knowing which file system
609 * a client is operating at the MGS side. But we need to pick up those
610 * clients so that the MGS can mark the corresponding file system as
611 * non-IR capable because old clients are not ready to be notified.
613 * Therefore we attempt to detect the file systems name by hacking the
614 * llog operation which is currently used by the clients to fetch
615 * configuration logs. At present this is fine because this is the
616 * ONLY llog operation between mgc and the MGS.
618 * If extra llog operation are going to be added, this function needs
621 * When releases prior than 2.0 are not supported, the following code
624 mgi = mgs_env_info(tsi->tsi_env);
626 RETURN(PTR_ERR(mgi));
628 logname = req_capsule_client_get(tsi->tsi_pill, &RMF_NAME);
630 char *ptr = strrchr(logname, '-');
631 int len = (ptr != NULL) ? (int)(ptr - logname) : 0;
633 if (ptr == NULL || len >= sizeof(mgi->mgi_fsname)) {
634 if (strcmp(logname, PARAMS_FILENAME) != 0)
635 LCONSOLE_WARN("%s: non-config logname "
637 tgt_name(tsi->tsi_tgt),
639 /* not error, this can be llog test name */
641 strncpy(mgi->mgi_fsname, logname, len);
642 mgi->mgi_fsname[len] = 0;
644 rc = mgs_fsc_attach(tsi->tsi_env, tsi->tsi_exp,
646 if (rc && rc != -EEXIST) {
647 LCONSOLE_WARN("%s: Unable to add client %s "
648 "to file system %s: %d\n",
649 tgt_name(tsi->tsi_tgt),
650 libcfs_nid2str(req->rq_peer.nid),
651 mgi->mgi_fsname, rc);
657 CERROR("%s: no logname in request\n", tgt_name(tsi->tsi_tgt));
663 static inline int mgs_init_export(struct obd_export *exp)
665 struct mgs_export_data *data = &exp->u.eu_mgs_data;
667 /* init mgs_export_data for fsc */
668 spin_lock_init(&data->med_lock);
669 INIT_LIST_HEAD(&data->med_clients);
671 spin_lock(&exp->exp_lock);
672 exp->exp_connecting = 1;
673 spin_unlock(&exp->exp_lock);
675 /* self-export doesn't need client data and ldlm initialization */
676 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
677 &exp->exp_client_uuid)))
679 return ldlm_init_export(exp);
682 static inline int mgs_destroy_export(struct obd_export *exp)
686 target_destroy_export(exp);
687 mgs_client_free(exp);
689 if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
690 &exp->exp_client_uuid)))
693 ldlm_destroy_export(exp);
698 static int mgs_extract_fs_pool(char *arg, char *fsname, char *poolname)
705 for (ptr = arg; *ptr != '\0'; ptr++) {
706 if (!isalnum(*ptr) && *ptr != '_' && *ptr != '-' && *ptr != '.')
710 /* Test for fsname.poolname format.
711 * strlen() test if poolname is empty
713 ptr = strchr(arg, '.');
714 if (!ptr || !strlen(ptr))
718 /* Also make sure poolname is not to long. */
719 if (strlen(ptr) > LOV_MAXPOOLNAME)
720 return -ENAMETOOLONG;
721 strlcpy(poolname, ptr, LOV_MAXPOOLNAME + 1);
723 /* Test if fsname is empty */
724 len = strlen(arg) - strlen(ptr) - 1;
729 if (len > LUSTRE_MAXFSNAME)
730 return -ENAMETOOLONG;
732 strncpy(fsname, arg, len);
737 static int mgs_iocontrol_nodemap(const struct lu_env *env,
738 struct mgs_device *mgs,
739 struct obd_ioctl_data *data)
741 struct lustre_cfg *lcfg = NULL;
744 const char *nodemap_name = NULL;
745 const char *nidstr = NULL;
746 const char *client_idstr = NULL;
747 const char *idtype_str = NULL;
750 char name_buf[LUSTRE_NODEMAP_NAME_LENGTH + 1];
752 unsigned long client_id;
759 if (data->ioc_type != LUSTRE_CFG_TYPE) {
760 CERROR("%s: unknown cfg record type: %d\n",
761 mgs->mgs_obd->obd_name, data->ioc_type);
762 GOTO(out, rc = -EINVAL);
765 if (data->ioc_plen1 > PAGE_SIZE)
766 GOTO(out, rc = -E2BIG);
768 OBD_ALLOC(lcfg, data->ioc_plen1);
770 GOTO(out, rc = -ENOMEM);
772 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
773 GOTO(out_lcfg, rc = -EFAULT);
775 cmd = lcfg->lcfg_command;
778 case LCFG_NODEMAP_ACTIVATE:
779 if (lcfg->lcfg_bufcount != 2)
780 GOTO(out_lcfg, rc = -EINVAL);
781 param = lustre_cfg_string(lcfg, 1);
782 if (strcmp(param, "1") == 0)
787 case LCFG_NODEMAP_ADD:
788 case LCFG_NODEMAP_DEL:
789 if (lcfg->lcfg_bufcount != 2)
790 GOTO(out_lcfg, rc = -EINVAL);
791 nodemap_name = lustre_cfg_string(lcfg, 1);
792 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
794 case LCFG_NODEMAP_TEST_NID:
795 if (lcfg->lcfg_bufcount != 2)
796 GOTO(out_lcfg, rc = -EINVAL);
797 nidstr = lustre_cfg_string(lcfg, 1);
798 nid = libcfs_str2nid(nidstr);
799 nodemap_test_nid(nid, name_buf, sizeof(name_buf));
800 rc = copy_to_user(data->ioc_pbuf1, name_buf,
801 min_t(size_t, data->ioc_plen1,
804 GOTO(out_lcfg, rc = -EFAULT);
806 case LCFG_NODEMAP_TEST_ID:
807 if (lcfg->lcfg_bufcount != 4)
808 GOTO(out_lcfg, rc = -EINVAL);
809 nidstr = lustre_cfg_string(lcfg, 1);
810 idtype_str = lustre_cfg_string(lcfg, 2);
811 client_idstr = lustre_cfg_string(lcfg, 3);
813 nid = libcfs_str2nid(nidstr);
814 if (strcmp(idtype_str, "uid") == 0)
815 idtype = NODEMAP_UID;
817 idtype = NODEMAP_GID;
819 rc = kstrtoul(client_idstr, 10, &client_id);
821 GOTO(out_lcfg, rc = -EINVAL);
823 rc = nodemap_test_id(nid, idtype, client_id, &fs_id);
825 GOTO(out_lcfg, rc = -EINVAL);
827 if (data->ioc_plen1 < sizeof(fs_idstr))
828 GOTO(out_lcfg, rc = -EINVAL);
830 snprintf(fs_idstr, sizeof(fs_idstr), "%u", fs_id);
831 if (copy_to_user(data->ioc_pbuf1, fs_idstr,
832 sizeof(fs_idstr)) != 0)
833 GOTO(out_lcfg, rc = -EINVAL);
835 case LCFG_NODEMAP_ADD_RANGE:
836 case LCFG_NODEMAP_DEL_RANGE:
837 case LCFG_NODEMAP_ADD_UIDMAP:
838 case LCFG_NODEMAP_DEL_UIDMAP:
839 case LCFG_NODEMAP_ADD_GIDMAP:
840 case LCFG_NODEMAP_DEL_GIDMAP:
841 case LCFG_NODEMAP_SET_FILESET:
842 case LCFG_NODEMAP_SET_SEPOL:
843 if (lcfg->lcfg_bufcount != 3)
844 GOTO(out_lcfg, rc = -EINVAL);
845 nodemap_name = lustre_cfg_string(lcfg, 1);
846 param = lustre_cfg_string(lcfg, 2);
847 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
849 case LCFG_NODEMAP_ADMIN:
850 case LCFG_NODEMAP_TRUSTED:
851 case LCFG_NODEMAP_DENY_UNKNOWN:
852 case LCFG_NODEMAP_SQUASH_UID:
853 case LCFG_NODEMAP_SQUASH_GID:
854 case LCFG_NODEMAP_MAP_MODE:
855 case LCFG_NODEMAP_AUDIT_MODE:
856 case LCFG_NODEMAP_FORBID_ENCRYPT:
857 if (lcfg->lcfg_bufcount != 4)
858 GOTO(out_lcfg, rc = -EINVAL);
859 nodemap_name = lustre_cfg_string(lcfg, 1);
860 param = lustre_cfg_string(lcfg, 3);
861 rc = mgs_nodemap_cmd(env, mgs, cmd, nodemap_name, param);
868 CERROR("%s: OBD_IOC_NODEMAP command %X for %s: rc = %d\n",
869 mgs->mgs_obd->obd_name, lcfg->lcfg_command,
874 /* revoke nodemap lock */
875 rc = mgs_find_or_make_fsdb(env, mgs, LUSTRE_NODEMAP_NAME, &fsdb);
877 CWARN("%s: cannot make nodemap fsdb: rc = %d\n",
878 mgs->mgs_obd->obd_name, rc);
880 mgs_revoke_lock(mgs, fsdb, CONFIG_T_NODEMAP);
881 mgs_put_fsdb(mgs, fsdb);
885 OBD_FREE(lcfg, data->ioc_plen1);
890 static int mgs_iocontrol_pool(const struct lu_env *env,
891 struct mgs_device *mgs,
892 struct obd_ioctl_data *data)
894 struct mgs_thread_info *mgi = mgs_env_info(env);
896 struct lustre_cfg *lcfg = NULL;
897 char *poolname = NULL;
900 OBD_ALLOC(poolname, LOV_MAXPOOLNAME + 1);
901 if (poolname == NULL)
904 if (data->ioc_type != LUSTRE_CFG_TYPE) {
905 CERROR("%s: unknown cfg record type: %d\n",
906 mgs->mgs_obd->obd_name, data->ioc_type);
907 GOTO(out_pool, rc = -EINVAL);
910 if (data->ioc_plen1 > PAGE_SIZE)
911 GOTO(out_pool, rc = -E2BIG);
913 OBD_ALLOC(lcfg, data->ioc_plen1);
915 GOTO(out_pool, rc = -ENOMEM);
917 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
918 GOTO(out_lcfg, rc = -EFAULT);
920 if (lcfg->lcfg_bufcount < 2)
921 GOTO(out_lcfg, rc = -EFAULT);
923 /* first arg is always <fsname>.<poolname> */
924 rc = mgs_extract_fs_pool(lustre_cfg_string(lcfg, 1), mgi->mgi_fsname,
929 switch (lcfg->lcfg_command) {
931 if (lcfg->lcfg_bufcount != 2)
932 GOTO(out_lcfg, rc = -EINVAL);
933 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_NEW, mgi->mgi_fsname,
937 if (lcfg->lcfg_bufcount != 3)
938 GOTO(out_lcfg, rc = -EINVAL);
939 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_ADD, mgi->mgi_fsname,
940 poolname, lustre_cfg_string(lcfg, 2));
943 if (lcfg->lcfg_bufcount != 3)
944 GOTO(out_lcfg, rc = -EINVAL);
945 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_REM, mgi->mgi_fsname,
946 poolname, lustre_cfg_string(lcfg, 2));
949 if (lcfg->lcfg_bufcount != 2)
950 GOTO(out_lcfg, rc = -EINVAL);
951 rc = mgs_pool_cmd(env, mgs, LCFG_POOL_DEL, mgi->mgi_fsname,
959 CERROR("OBD_IOC_POOL err %d, cmd %X for pool %s.%s\n",
960 rc, lcfg->lcfg_command, mgi->mgi_fsname, poolname);
965 OBD_FREE(lcfg, data->ioc_plen1);
967 OBD_FREE(poolname, LOV_MAXPOOLNAME + 1);
971 /* from mdt_iocontrol */
972 static int mgs_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
973 void *karg, void __user *uarg)
975 struct mgs_device *mgs = exp2mgs_dev(exp);
976 struct obd_ioctl_data *data = karg;
981 CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
983 rc = lu_env_init(&env, LCT_MG_THREAD);
989 case OBD_IOC_PARAM: {
990 struct lustre_cfg *lcfg;
992 if (data->ioc_type != LUSTRE_CFG_TYPE) {
993 CERROR("%s: unknown cfg record type: %d\n",
994 mgs->mgs_obd->obd_name, data->ioc_type);
995 GOTO(out, rc = -EINVAL);
998 OBD_ALLOC(lcfg, data->ioc_plen1);
1000 GOTO(out, rc = -ENOMEM);
1001 if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
1002 GOTO(out_free, rc = -EFAULT);
1004 if (lcfg->lcfg_bufcount < 1)
1005 GOTO(out_free, rc = -EINVAL);
1007 rc = mgs_set_param(&env, mgs, lcfg);
1009 CERROR("%s: setparam err: rc = %d\n",
1010 exp->exp_obd->obd_name, rc);
1012 OBD_FREE(lcfg, data->ioc_plen1);
1016 case OBD_IOC_REPLACE_NIDS: {
1017 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
1019 CERROR("%s: no device or fsname specified: rc = %d\n",
1020 exp->exp_obd->obd_name, rc);
1024 if (data->ioc_inllen1 > MTI_NAME_MAXLEN) {
1026 CERROR("%s: device or fsname is too long: rc = %d\n",
1027 exp->exp_obd->obd_name, rc);
1031 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
1033 CERROR("%s: device or fsname is not NUL terminated: "
1034 "rc = %d\n", exp->exp_obd->obd_name, rc);
1038 if (!data->ioc_inllen2 || !data->ioc_inlbuf2) {
1040 CERROR("%s: no NIDs specified: rc = %d\n",
1041 exp->exp_obd->obd_name, rc);
1045 if (data->ioc_inlbuf2[data->ioc_inllen2 - 1] != 0) {
1047 CERROR("%s: NID list is not NUL terminated: "
1048 "rc = %d\n", exp->exp_obd->obd_name, rc);
1052 /* replace nids in llog */
1053 rc = mgs_replace_nids(&env, mgs, data->ioc_inlbuf1,
1056 CERROR("%s: error replacing nids: rc = %d\n",
1057 exp->exp_obd->obd_name, rc);
1062 case OBD_IOC_CLEAR_CONFIGS: {
1063 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
1065 CERROR("%s: no device or fsname specified: rc = %d\n",
1066 exp->exp_obd->obd_name, rc);
1070 if (data->ioc_inllen1 > MTI_NAME_MAXLEN) {
1072 CERROR("%s: device or fsname is too long: rc = %d\n",
1073 exp->exp_obd->obd_name, rc);
1077 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
1079 CERROR("%s: device or fsname is not NUL terminated: "
1080 "rc = %d\n", exp->exp_obd->obd_name, rc);
1084 /* remove records marked SKIP from config logs */
1085 rc = mgs_clear_configs(&env, mgs, data->ioc_inlbuf1);
1087 CERROR("%s: error clearing config log: rc = %d\n",
1088 exp->exp_obd->obd_name, rc);
1094 rc = mgs_iocontrol_pool(&env, mgs, data);
1097 case OBD_IOC_BARRIER:
1098 rc = mgs_iocontrol_barrier(&env, mgs, data);
1101 case OBD_IOC_NODEMAP:
1102 rc = mgs_iocontrol_nodemap(&env, mgs, data);
1105 case OBD_IOC_LCFG_FORK:
1106 rc = mgs_lcfg_fork(&env, mgs, data->ioc_inlbuf1,
1110 case OBD_IOC_LCFG_ERASE:
1111 rc = mgs_lcfg_erase(&env, mgs, data->ioc_inlbuf1);
1114 case OBD_IOC_CATLOGLIST:
1115 rc = mgs_list_logs(&env, mgs, data);
1117 case OBD_IOC_LLOG_CANCEL:
1118 case OBD_IOC_LLOG_REMOVE:
1119 case OBD_IOC_LLOG_CHECK:
1120 case OBD_IOC_LLOG_INFO:
1121 case OBD_IOC_LLOG_PRINT: {
1122 struct llog_ctxt *ctxt;
1124 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1125 rc = llog_ioctl(&env, ctxt, cmd, data);
1126 llog_ctxt_put(ctxt);
1131 CERROR("%s: unknown command %#x\n",
1132 mgs->mgs_obd->obd_name, cmd);
1141 static int mgs_connect_to_osd(struct mgs_device *m, const char *nextdev)
1143 struct obd_connect_data *data = NULL;
1144 struct obd_device *obd;
1148 OBD_ALLOC_PTR(data);
1152 obd = class_name2obd(nextdev);
1154 CERROR("can't locate next device: %s\n", nextdev);
1155 GOTO(out, rc = -ENOTCONN);
1158 data->ocd_version = LUSTRE_VERSION_CODE;
1160 rc = obd_connect(NULL, &m->mgs_bottom_exp, obd,
1161 &obd->obd_uuid, data, NULL);
1163 CERROR("cannot connect to next dev %s (%d)\n", nextdev, rc);
1167 m->mgs_bottom = lu2dt_dev(m->mgs_bottom_exp->exp_obd->obd_lu_dev);
1168 m->mgs_dt_dev.dd_lu_dev.ld_site = m->mgs_bottom->dd_lu_dev.ld_site;
1169 LASSERT(m->mgs_dt_dev.dd_lu_dev.ld_site);
1175 static struct tgt_handler mgs_mgs_handlers[] = {
1176 TGT_RPC_HANDLER(MGS_FIRST_OPC,
1177 0, MGS_CONNECT, mgs_connect,
1178 &RQF_CONNECT, LUSTRE_OBD_VERSION),
1179 TGT_RPC_HANDLER(MGS_FIRST_OPC,
1180 0, MGS_DISCONNECT, mgs_disconnect,
1181 &RQF_MDS_DISCONNECT, LUSTRE_OBD_VERSION),
1182 TGT_MGS_HDL_VAR(0, MGS_EXCEPTION, mgs_exception),
1183 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 18, 53, 0)
1184 TGT_MGS_HDL(HAS_REPLY | IS_MUTABLE, MGS_SET_INFO, mgs_set_info),
1186 TGT_MGS_HDL(HAS_REPLY | IS_MUTABLE, MGS_TARGET_REG, mgs_target_reg),
1187 TGT_MGS_HDL_VAR(0, MGS_TARGET_DEL, mgs_target_del),
1188 TGT_MGS_HDL(HAS_REPLY, MGS_CONFIG_READ, mgs_config_read),
1191 static struct tgt_handler mgs_obd_handlers[] = {
1192 TGT_OBD_HDL(0, OBD_PING, tgt_obd_ping),
1195 static struct tgt_handler mgs_dlm_handlers[] = {
1196 [LDLM_ENQUEUE - LDLM_FIRST_OPC] = {
1197 .th_name = "LDLM_ENQUEUE",
1198 /* don't use th_fail_id for MGS to don't interfere with MDS tests.
1199 * * There are no tests for MGS with OBD_FAIL_LDLM_ENQUEUE_NET so it
1200 * * is safe. If such tests will be needed we have to distinguish
1201 * * MDS and MGS fail ids, e.g use OBD_FAIL_MGS_ENQUEUE_NET for MGS
1202 * * instead of common OBD_FAIL_LDLM_ENQUEUE_NET */
1204 .th_opc = LDLM_ENQUEUE,
1205 .th_flags = HAS_KEY,
1206 .th_act = tgt_enqueue,
1207 .th_fmt = &RQF_LDLM_ENQUEUE,
1208 .th_version = LUSTRE_DLM_VERSION,
1212 static struct tgt_handler mgs_llog_handlers[] = {
1213 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_CREATE, mgs_llog_open),
1214 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_NEXT_BLOCK, tgt_llog_next_block),
1215 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_READ_HEADER, tgt_llog_read_header),
1216 TGT_LLOG_HDL (0, LLOG_ORIGIN_HANDLE_PREV_BLOCK, tgt_llog_prev_block),
1219 static struct tgt_opc_slice mgs_common_slice[] = {
1221 .tos_opc_start = MGS_FIRST_OPC,
1222 .tos_opc_end = MGS_LAST_OPC,
1223 .tos_hs = mgs_mgs_handlers
1226 .tos_opc_start = OBD_FIRST_OPC,
1227 .tos_opc_end = OBD_LAST_OPC,
1228 .tos_hs = mgs_obd_handlers
1231 .tos_opc_start = LDLM_FIRST_OPC,
1232 .tos_opc_end = LDLM_LAST_OPC,
1233 .tos_hs = mgs_dlm_handlers
1236 .tos_opc_start = LLOG_FIRST_OPC,
1237 .tos_opc_end = LLOG_LAST_OPC,
1238 .tos_hs = mgs_llog_handlers
1241 .tos_opc_start = SEC_FIRST_OPC,
1242 .tos_opc_end = SEC_LAST_OPC,
1243 .tos_hs = tgt_sec_ctx_handlers
1250 static int mgs_init0(const struct lu_env *env, struct mgs_device *mgs,
1251 struct lu_device_type *ldt, struct lustre_cfg *lcfg)
1253 struct ptlrpc_service_conf conf;
1254 struct obd_device *obd;
1255 struct lustre_mount_info *lmi;
1256 struct llog_ctxt *ctxt;
1261 lmi = server_get_mount(lustre_cfg_string(lcfg, 0));
1265 mgs->mgs_dt_dev.dd_lu_dev.ld_ops = &mgs_lu_ops;
1267 rc = mgs_connect_to_osd(mgs, lustre_cfg_string(lcfg, 3));
1271 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1274 mgs->mgs_obd->obd_lu_dev = &mgs->mgs_dt_dev.dd_lu_dev;
1276 obd->u.obt.obt_magic = OBT_MAGIC;
1277 obd->u.obt.obt_instance = 0;
1279 /* namespace for mgs llog */
1280 obd->obd_namespace = ldlm_namespace_new(obd ,"MGS",
1281 LDLM_NAMESPACE_SERVER,
1282 LDLM_NAMESPACE_MODEST,
1284 if (IS_ERR(obd->obd_namespace)) {
1285 rc = PTR_ERR(obd->obd_namespace);
1286 CERROR("%s: unable to create server namespace: rc = %d\n",
1288 obd->obd_namespace = NULL;
1292 /* No recovery for MGCs */
1293 obd->obd_replayable = 0;
1295 rc = tgt_init(env, &mgs->mgs_lut, obd, mgs->mgs_bottom,
1296 mgs_common_slice, OBD_FAIL_MGS_ALL_REQUEST_NET,
1297 OBD_FAIL_MGS_ALL_REPLY_NET);
1301 rc = mgs_fs_setup(env, mgs);
1303 CERROR("%s: MGS filesystem method init failed: rc = %d\n",
1308 rc = llog_setup(env, obd, &obd->obd_olg, LLOG_CONFIG_ORIG_CTXT,
1309 obd, &llog_osd_ops);
1313 /* XXX: we need this trick till N:1 stack is supported
1314 * set "current" directory for named llogs */
1315 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1317 ctxt->loc_dir = mgs->mgs_configs_dir;
1318 llog_ctxt_put(ctxt);
1320 /* Internal mgs setup */
1321 mgs_init_fsdb_list(mgs);
1322 mutex_init(&mgs->mgs_mutex);
1323 mgs->mgs_start_time = ktime_get_real_seconds();
1324 spin_lock_init(&mgs->mgs_lock);
1325 mutex_init(&mgs->mgs_health_mutex);
1326 init_rwsem(&mgs->mgs_barrier_rwsem);
1328 rc = mgs_lcfg_rename(env, mgs);
1332 rc = lproc_mgs_setup(mgs, lustre_cfg_string(lcfg, 3));
1334 CERROR("%s: cannot initialize proc entry: rc = %d\n",
1339 /* Setup params fsdb and log, so that other servers can make a local
1340 * copy successfully when they are mounted. See LU-4783 */
1341 rc = mgs_params_fsdb_setup(env, mgs);
1343 /* params fsdb and log can be setup later */
1344 CERROR("%s: %s fsdb and log setup failed: rc = %d\n",
1345 obd->obd_name, PARAMS_FILENAME, rc);
1347 /* Setup _mgs fsdb, useful for srpc */
1348 mgs__mgs_fsdb_setup(env, mgs);
1350 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
1351 "mgs_ldlm_client", &obd->obd_ldlm_client);
1353 conf = (typeof(conf)) {
1354 .psc_name = LUSTRE_MGS_NAME,
1355 .psc_watchdog_factor = MGS_SERVICE_WATCHDOG_FACTOR,
1357 .bc_nbufs = MGS_NBUFS,
1358 .bc_buf_size = MGS_BUFSIZE,
1359 .bc_req_max_size = MGS_MAXREQSIZE,
1360 .bc_rep_max_size = MGS_MAXREPSIZE,
1361 .bc_req_portal = MGS_REQUEST_PORTAL,
1362 .bc_rep_portal = MGC_REPLY_PORTAL,
1365 .tc_thr_name = "ll_mgs",
1366 .tc_nthrs_init = MGS_NTHRS_INIT,
1367 .tc_nthrs_max = MGS_NTHRS_MAX,
1368 .tc_ctx_tags = LCT_MG_THREAD,
1371 .so_req_handler = tgt_request_handle,
1372 .so_req_printer = target_print_req,
1376 /* Start the service threads */
1377 mgs->mgs_service = ptlrpc_register_service(&conf, &obd->obd_kset,
1378 obd->obd_debugfs_entry);
1379 if (IS_ERR(mgs->mgs_service)) {
1380 rc = PTR_ERR(mgs->mgs_service);
1381 CERROR("failed to start mgs service: %d\n", rc);
1382 mgs->mgs_service = NULL;
1383 GOTO(err_lproc, rc);
1386 ping_evictor_start();
1388 CDEBUG(D_INFO, "MGS %s started\n", obd->obd_name);
1390 /* device stack is not yet fully setup to keep no objects behind */
1391 lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0);
1394 mgs_params_fsdb_cleanup(env, mgs);
1395 lproc_mgs_cleanup(mgs);
1397 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1399 ctxt->loc_dir = NULL;
1400 llog_cleanup(env, ctxt);
1403 tgt_fini(env, &mgs->mgs_lut);
1405 /* No extra cleanup needed for llog_init_commit_thread() */
1406 mgs_fs_cleanup(env, mgs);
1408 ldlm_namespace_free(obd->obd_namespace, NULL, 0);
1409 obd->obd_namespace = NULL;
1411 lu_site_purge(env, mgs2lu_dev(mgs)->ld_site, ~0);
1412 lu_site_print(env, mgs2lu_dev(mgs)->ld_site,
1413 &mgs2lu_dev(mgs)->ld_site->ls_obj_hash.nelems,
1414 D_OTHER, lu_cdebug_printer);
1415 obd_disconnect(mgs->mgs_bottom_exp);
1418 server_put_mount(lustre_cfg_string(lcfg, 0), true);
1422 static struct lu_device *mgs_device_free(const struct lu_env *env,
1423 struct lu_device *lu)
1425 struct mgs_device *mgs = lu2mgs_dev(lu);
1428 dt_device_fini(&mgs->mgs_dt_dev);
1433 static int mgs_process_config(const struct lu_env *env,
1434 struct lu_device *dev,
1435 struct lustre_cfg *lcfg)
1441 static int mgs_object_init(const struct lu_env *env, struct lu_object *o,
1442 const struct lu_object_conf *unused)
1444 struct mgs_device *d = lu2mgs_dev(o->lo_dev);
1445 struct lu_device *under;
1446 struct lu_object *below;
1450 /* do no set .do_ops as mgs calls to bottom osd directly */
1452 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
1453 PFID(lu_object_fid(o)));
1455 under = &d->mgs_bottom->dd_lu_dev;
1456 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
1458 lu_object_add(o, below);
1465 static void mgs_object_free(const struct lu_env *env, struct lu_object *o)
1467 struct mgs_object *obj = lu2mgs_obj(o);
1468 struct lu_object_header *h = o->lo_header;
1470 dt_object_fini(&obj->mgo_obj);
1471 lu_object_header_fini(h);
1472 OBD_FREE_PRE(obj, sizeof(*obj), "kfreed");
1473 kfree_rcu(obj, mgo_header.loh_rcu);
1476 static int mgs_object_print(const struct lu_env *env, void *cookie,
1477 lu_printer_t p, const struct lu_object *l)
1479 const struct mgs_object *o = lu2mgs_obj((struct lu_object *) l);
1481 return (*p)(env, cookie, LUSTRE_MGS_NAME"-object@%p", o);
1484 static const struct lu_object_operations mgs_lu_obj_ops = {
1485 .loo_object_init = mgs_object_init,
1486 .loo_object_free = mgs_object_free,
1487 .loo_object_print = mgs_object_print,
1490 static struct lu_object *mgs_object_alloc(const struct lu_env *env,
1491 const struct lu_object_header *hdr,
1492 struct lu_device *d)
1494 struct lu_object_header *h;
1495 struct mgs_object *o;
1496 struct lu_object *l;
1498 LASSERT(hdr == NULL);
1502 l = &o->mgo_obj.do_lu;
1505 lu_object_header_init(h);
1506 dt_object_init(&o->mgo_obj, h, d);
1507 lu_object_add_top(h, l);
1509 l->lo_ops = &mgs_lu_obj_ops;
1517 const struct lu_device_operations mgs_lu_ops = {
1518 .ldo_object_alloc = mgs_object_alloc,
1519 .ldo_process_config = mgs_process_config,
1522 static struct lu_device *mgs_device_alloc(const struct lu_env *env,
1523 struct lu_device_type *type,
1524 struct lustre_cfg *lcfg)
1526 struct mgs_device *mgs;
1527 struct lu_device *ludev;
1531 ludev = ERR_PTR(-ENOMEM);
1535 ludev = mgs2lu_dev(mgs);
1536 dt_device_init(&mgs->mgs_dt_dev, type);
1537 rc = mgs_init0(env, mgs, type, lcfg);
1539 mgs_device_free(env, ludev);
1540 ludev = ERR_PTR(rc);
1546 static struct lu_device *mgs_device_fini(const struct lu_env *env,
1547 struct lu_device *d)
1549 struct mgs_device *mgs = lu2mgs_dev(d);
1550 struct obd_device *obd = mgs->mgs_obd;
1551 struct llog_ctxt *ctxt;
1555 LASSERT(mgs->mgs_bottom);
1557 class_disconnect_exports(obd);
1559 ping_evictor_stop();
1561 mutex_lock(&mgs->mgs_health_mutex);
1562 ptlrpc_unregister_service(mgs->mgs_service);
1563 mutex_unlock(&mgs->mgs_health_mutex);
1565 mgs_params_fsdb_cleanup(env, mgs);
1566 mgs_cleanup_fsdb_list(mgs);
1568 ldlm_namespace_free_prior(obd->obd_namespace, NULL, 1);
1569 obd_exports_barrier(obd);
1570 obd_zombie_barrier();
1572 tgt_fini(env, &mgs->mgs_lut);
1573 lproc_mgs_cleanup(mgs);
1575 ctxt = llog_get_context(mgs->mgs_obd, LLOG_CONFIG_ORIG_CTXT);
1577 ctxt->loc_dir = NULL;
1578 llog_cleanup(env, ctxt);
1581 mgs_fs_cleanup(env, mgs);
1583 ldlm_namespace_free_post(obd->obd_namespace);
1584 obd->obd_namespace = NULL;
1586 lu_site_purge(env, d->ld_site, ~0);
1587 lu_site_print(env, d->ld_site, &d->ld_site->ls_obj_hash.nelems,
1588 D_OTHER, lu_cdebug_printer);
1589 LASSERT(mgs->mgs_bottom_exp);
1590 obd_disconnect(mgs->mgs_bottom_exp);
1592 server_put_mount(obd->obd_name, true);
1597 /* context key constructor/destructor: mgs_key_init, mgs_key_fini */
1598 LU_KEY_INIT_FINI(mgs, struct mgs_thread_info);
1600 LU_TYPE_INIT_FINI(mgs, &mgs_thread_key);
1602 LU_CONTEXT_KEY_DEFINE(mgs, LCT_MG_THREAD);
1604 static const struct lu_device_type_operations mgs_device_type_ops = {
1605 .ldto_init = mgs_type_init,
1606 .ldto_fini = mgs_type_fini,
1608 .ldto_start = mgs_type_start,
1609 .ldto_stop = mgs_type_stop,
1611 .ldto_device_alloc = mgs_device_alloc,
1612 .ldto_device_free = mgs_device_free,
1614 .ldto_device_fini = mgs_device_fini
1617 static struct lu_device_type mgs_device_type = {
1618 .ldt_tags = LU_DEVICE_DT,
1619 .ldt_name = LUSTRE_MGS_NAME,
1620 .ldt_ops = &mgs_device_type_ops,
1621 .ldt_ctx_tags = LCT_MG_THREAD
1624 static int mgs_obd_reconnect(const struct lu_env *env, struct obd_export *exp,
1625 struct obd_device *obd, struct obd_uuid *cluuid,
1626 struct obd_connect_data *data, void *localdata)
1630 if (exp == NULL || obd == NULL || cluuid == NULL)
1633 tgt_counter_incr(exp, LPROC_MGS_CONNECT);
1636 data->ocd_connect_flags &= MGS_CONNECT_SUPPORTED;
1638 if (data->ocd_connect_flags & OBD_CONNECT_FLAGS2)
1639 data->ocd_connect_flags2 &= MGS_CONNECT_SUPPORTED2;
1641 exp->exp_connect_data = *data;
1642 data->ocd_version = LUSTRE_VERSION_CODE;
1645 RETURN(mgs_export_stats_init(obd, exp, localdata));
1648 static int mgs_obd_connect(const struct lu_env *env, struct obd_export **exp,
1649 struct obd_device *obd, struct obd_uuid *cluuid,
1650 struct obd_connect_data *data, void *localdata)
1652 struct obd_export *lexp;
1653 struct lustre_handle conn = {
1660 if (exp == NULL || obd == NULL || cluuid == NULL)
1663 rc = class_connect(&conn, obd, cluuid);
1667 lexp = class_conn2export(&conn);
1671 rc = mgs_obd_reconnect(env, lexp, obd, cluuid, data, localdata);
1673 GOTO(out_disconnect, rc);
1680 class_disconnect(lexp);
1685 static int mgs_obd_disconnect(struct obd_export *exp)
1693 mgs_fsc_cleanup(exp);
1695 class_export_get(exp);
1696 tgt_counter_incr(exp, LPROC_MGS_DISCONNECT);
1698 rc = server_disconnect_export(exp);
1699 class_export_put(exp);
1703 static int mgs_health_check(const struct lu_env *env, struct obd_device *obd)
1705 struct mgs_device *mgs = lu2mgs_dev(obd->obd_lu_dev);
1708 mutex_lock(&mgs->mgs_health_mutex);
1709 rc |= ptlrpc_service_health_check(mgs->mgs_service);
1710 mutex_unlock(&mgs->mgs_health_mutex);
1712 return rc != 0 ? 1 : 0;
1715 /* use obd ops to offer management infrastructure */
1716 static const struct obd_ops mgs_obd_device_ops = {
1717 .o_owner = THIS_MODULE,
1718 .o_connect = mgs_obd_connect,
1719 .o_reconnect = mgs_obd_reconnect,
1720 .o_disconnect = mgs_obd_disconnect,
1721 .o_init_export = mgs_init_export,
1722 .o_destroy_export = mgs_destroy_export,
1723 .o_iocontrol = mgs_iocontrol,
1724 .o_health_check = mgs_health_check,
1727 static int __init mgs_init(void)
1729 return class_register_type(&mgs_obd_device_ops, NULL, true,
1730 LUSTRE_MGS_NAME, &mgs_device_type);
1733 static void __exit mgs_exit(void)
1735 class_unregister_type(LUSTRE_MGS_NAME);
1738 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
1739 MODULE_DESCRIPTION("Lustre Management Server (MGS)");
1740 MODULE_VERSION(LUSTRE_VERSION_STRING);
1741 MODULE_LICENSE("GPL");
1743 module_init(mgs_init);
1744 module_exit(mgs_exit);