| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| * |
| * lustre/mgc/libmgc.c |
| * |
| * Lustre Management Client |
| * Author: Nathan Rutman <nathan@clusterfs.com> |
| */ |
| |
| /* Minimal MGC for liblustre: only used to read the config log from the MGS |
| at setup time, no updates. */ |
| |
| #define DEBUG_SUBSYSTEM S_MGC |
| |
| #include <liblustre.h> |
| |
| #include <obd_class.h> |
| #include <lustre_dlm.h> |
| #include <lustre_log.h> |
| #include <lustre_fsfilt.h> |
| #include <lustre_disk.h> |
| |
| |
| static int mgc_setup(struct obd_device *obd, struct lustre_cfg *lcfg) |
| { |
| int rc; |
| |
| ptlrpcd_addref(); |
| |
| rc = client_obd_setup(obd, lcfg); |
| if (rc) |
| GOTO(err_decref, rc); |
| |
| /* liblustre only support null flavor to MGS */ |
| obd->u.cli.cl_flvr_mgc.sf_rpc = SPTLRPC_FLVR_NULL; |
| |
| rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL); |
| if (rc) { |
| CERROR("failed to setup llogging subsystems\n"); |
| GOTO(err_cleanup, rc); |
| } |
| |
| return rc; |
| |
| err_cleanup: |
| client_obd_cleanup(obd); |
| err_decref: |
| ptlrpcd_decref(); |
| return rc; |
| } |
| |
| static int mgc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage) |
| { |
| int rc = 0; |
| |
| switch (stage) { |
| case OBD_CLEANUP_EARLY: |
| case OBD_CLEANUP_EXPORTS: |
| obd_cleanup_client_import(obd); |
| rc = obd_llog_finish(obd, 0); |
| if (rc != 0) |
| CERROR("failed to cleanup llogging subsystems\n"); |
| break; |
| } |
| return rc; |
| } |
| |
| static int mgc_cleanup(struct obd_device *obd) |
| { |
| int rc; |
| |
| ptlrpcd_decref(); |
| |
| rc = client_obd_cleanup(obd); |
| return rc; |
| } |
| |
| static int mgc_llog_init(struct obd_device *obd, struct obd_llog_group *olg, |
| struct obd_device *tgt, int *index) |
| { |
| struct llog_ctxt *ctxt; |
| int rc; |
| |
| LASSERT(olg == &obd->obd_olg); |
| rc = llog_setup(NULL, obd, olg, LLOG_CONFIG_REPL_CTXT, tgt, |
| &llog_client_ops); |
| if (rc < 0) |
| return rc; |
| |
| ctxt = llog_group_get_ctxt(olg, LLOG_CONFIG_REPL_CTXT); |
| llog_initiator_connect(ctxt); |
| llog_ctxt_put(ctxt); |
| |
| return rc; |
| } |
| |
| static int mgc_llog_finish(struct obd_device *obd, int count) |
| { |
| struct llog_ctxt *ctxt; |
| |
| |
| ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT); |
| if (ctxt) |
| llog_cleanup(NULL, ctxt); |
| |
| return 0; |
| } |
| |
| struct obd_ops mgc_obd_ops = { |
| .o_owner = THIS_MODULE, |
| .o_setup = mgc_setup, |
| .o_precleanup = mgc_precleanup, |
| .o_cleanup = mgc_cleanup, |
| .o_add_conn = client_import_add_conn, |
| .o_del_conn = client_import_del_conn, |
| .o_connect = client_connect_import, |
| .o_disconnect = client_disconnect_export, |
| .o_llog_init = mgc_llog_init, |
| .o_llog_finish = mgc_llog_finish, |
| }; |
| |
| int __init mgc_init(void) |
| { |
| return class_register_type(&mgc_obd_ops, NULL, |
| NULL, LUSTRE_MGC_NAME, NULL); |
| } |