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/*
* 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);
}
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