1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 * Lustre Management Client
39 * Author: Nathan Rutman <nathan@clusterfs.com>
42 /* Minimal MGC for liblustre: only used to read the config log from the MGS
43 at setup time, no updates. */
46 # define EXPORT_SYMTAB
48 #define DEBUG_SUBSYSTEM S_MGC
50 #include <liblustre.h>
52 #include <obd_class.h>
53 #include <lustre_dlm.h>
54 #include <lustre_log.h>
55 #include <lustre_fsfilt.h>
56 #include <lustre_disk.h>
59 static int mgc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
66 rc = client_obd_setup(obd, lcfg);
70 /* liblustre only support null flavor to MGS */
71 obd->u.cli.cl_flvr_mgc.sf_rpc = SPTLRPC_FLVR_NULL;
73 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
75 CERROR("failed to setup llogging subsystems\n");
76 GOTO(err_cleanup, rc);
82 client_obd_cleanup(obd);
88 static int mgc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
94 case OBD_CLEANUP_EARLY:
95 case OBD_CLEANUP_EXPORTS:
96 obd_cleanup_client_import(obd);
97 rc = obd_llog_finish(obd, 0);
99 CERROR("failed to cleanup llogging subsystems\n");
105 static int mgc_cleanup(struct obd_device *obd)
107 struct client_obd *cli = &obd->u.cli;
111 LASSERT(cli->cl_mgc_vfsmnt == NULL);
115 rc = client_obd_cleanup(obd);
119 static int mgc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
120 struct obd_device *tgt, int *index)
122 struct llog_ctxt *ctxt;
126 LASSERT(olg == &obd->obd_olg);
127 rc = llog_setup(obd, olg, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL,
130 ctxt = llog_group_get_ctxt(olg, LLOG_CONFIG_REPL_CTXT);
131 llog_initiator_connect(ctxt);
138 static int mgc_llog_finish(struct obd_device *obd, int count)
143 rc = llog_cleanup(llog_get_context(obd, LLOG_CONFIG_REPL_CTXT));
148 struct obd_ops mgc_obd_ops = {
149 .o_owner = THIS_MODULE,
150 .o_setup = mgc_setup,
151 .o_precleanup = mgc_precleanup,
152 .o_cleanup = mgc_cleanup,
153 .o_add_conn = client_import_add_conn,
154 .o_del_conn = client_import_del_conn,
155 .o_connect = client_connect_import,
156 .o_disconnect = client_disconnect_export,
157 .o_llog_init = mgc_llog_init,
158 .o_llog_finish = mgc_llog_finish,
161 int __init mgc_init(void)
163 return class_register_type(&mgc_obd_ops, NULL,
164 NULL, LUSTRE_MGC_NAME, NULL);