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 2008 Sun Microsystems, Inc. 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>
58 static int mgc_setup(struct obd_device *obd, obd_count len, void *buf)
65 rc = client_obd_setup(obd, len, buf);
69 rc = obd_llog_init(obd, obd, 0, NULL, NULL);
71 CERROR("failed to setup llogging subsystems\n");
72 GOTO(err_cleanup, rc);
78 client_obd_cleanup(obd);
84 static int mgc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
90 case OBD_CLEANUP_EARLY:
91 case OBD_CLEANUP_EXPORTS:
92 /* client import will not have been cleaned. */
93 down_write(&obd->u.cli.cl_sem);
94 if (obd->u.cli.cl_import) {
95 struct obd_import *imp;
96 imp = obd->u.cli.cl_import;
97 CERROR("client import never connected\n");
98 class_destroy_import(imp);
99 obd->u.cli.cl_import = NULL;
101 up_write(&obd->u.cli.cl_sem);
103 rc = obd_llog_finish(obd, 0);
105 CERROR("failed to cleanup llogging subsystems\n");
107 case OBD_CLEANUP_SELF_EXP:
109 case OBD_CLEANUP_OBD:
115 static int mgc_cleanup(struct obd_device *obd)
117 struct client_obd *cli = &obd->u.cli;
121 LASSERT(cli->cl_mgc_vfsmnt == NULL);
125 rc = client_obd_cleanup(obd);
129 static int mgc_llog_init(struct obd_device *obd, struct obd_device *tgt,
130 int count, struct llog_catid *logid,
131 struct obd_uuid *uuid)
133 struct llog_ctxt *ctxt;
137 rc = llog_setup(obd, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL,
140 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
141 llog_initiator_connect(ctxt);
148 static int mgc_llog_finish(struct obd_device *obd, int count)
153 rc = llog_cleanup(llog_get_context(obd, LLOG_CONFIG_REPL_CTXT));
158 struct obd_ops mgc_obd_ops = {
159 .o_owner = THIS_MODULE,
160 .o_setup = mgc_setup,
161 .o_precleanup = mgc_precleanup,
162 .o_cleanup = mgc_cleanup,
163 .o_add_conn = client_import_add_conn,
164 .o_del_conn = client_import_del_conn,
165 .o_connect = client_connect_import,
166 .o_disconnect = client_disconnect_export,
167 .o_llog_init = mgc_llog_init,
168 .o_llog_finish = mgc_llog_finish,
171 int __init mgc_init(void)
173 return class_register_type(&mgc_obd_ops, NULL, LUSTRE_MGC_NAME);