1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
5 * Author: Peter J. Braam <braam@clusterfs.com>
6 * Author: Phil Schwan <phil@clusterfs.com>
7 * Author: Mike Shaver <shaver@clusterfs.com>
9 * This file is part of Lustre, http://www.lustre.org.
11 * Lustre is free software; you can redistribute it and/or
12 * modify it under the terms of version 2 of the GNU General Public
13 * License as published by the Free Software Foundation.
15 * Lustre is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with Lustre; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 * Client-common OBD method implementations and utility functions.
28 #define DEBUG_SUBSYSTEM S_OST /* XXX WRONG */
30 #include <linux/module.h>
31 #include <linux/obd_ost.h>
32 #include <linux/lustre_net.h>
33 #include <linux/lustre_dlm.h>
35 struct client_obd *client_conn2cli(struct lustre_handle *conn)
37 struct obd_export *export = class_conn2export(conn);
40 return &export->exp_obd->u.cli;
43 int client_obd_setup(struct obd_device *obddev, obd_count len, void *buf)
45 struct obd_ioctl_data* data = buf;
46 int rq_portal, rp_portal;
48 struct client_obd *cli = &obddev->u.cli;
49 obd_uuid_t server_uuid;
52 if (obddev->obd_type->typ_ops->o_brw) {
53 rq_portal = OST_REQUEST_PORTAL;
54 rp_portal = OSC_REPLY_PORTAL;
57 rq_portal = MDS_REQUEST_PORTAL;
58 rp_portal = MDC_REPLY_PORTAL;
62 if (data->ioc_inllen1 < 1) {
63 CERROR("requires a TARGET UUID\n");
67 if (data->ioc_inllen1 > 37) {
68 CERROR("client UUID must be less than 38 characters\n");
72 if (data->ioc_inllen2 < 1) {
73 CERROR("setup requires a SERVER UUID\n");
77 if (data->ioc_inllen2 > 37) {
78 CERROR("target UUID must be less than 38 characters\n");
82 sema_init(&cli->cl_sem, 1);
83 cli->cl_conn_count = 0;
84 memcpy(cli->cl_target_uuid, data->ioc_inlbuf1, data->ioc_inllen1);
85 memcpy(server_uuid, data->ioc_inlbuf2, MIN(data->ioc_inllen2,
86 sizeof(server_uuid)));
88 cli->cl_import.imp_connection = ptlrpc_uuid_to_connection(server_uuid);
89 if (!cli->cl_import.imp_connection)
92 ptlrpc_init_client(rq_portal, rp_portal, name,
93 &obddev->obd_ldlm_client);
94 cli->cl_import.imp_client = &obddev->obd_ldlm_client;
95 cli->cl_import.imp_obd = obddev;
97 cli->cl_max_mds_easize = sizeof(struct lov_mds_md);
98 cli->cl_max_ost_easize = sizeof(struct lov_stripe_md);
104 int client_obd_cleanup(struct obd_device * obddev)
106 struct client_obd *mdc = &obddev->u.cli;
108 ptlrpc_cleanup_client(&mdc->cl_import);
109 ptlrpc_put_connection(mdc->cl_import.imp_connection);
115 int client_obd_connect(struct lustre_handle *conn, struct obd_device *obd,
118 struct client_obd *cli = &obd->u.cli;
119 struct ptlrpc_request *request;
120 int rc, size[] = {sizeof(cli->cl_target_uuid),
121 sizeof(obd->obd_uuid) };
122 char *tmp[] = {cli->cl_target_uuid, obd->obd_uuid};
123 int rq_opc = (obd->obd_type->typ_ops->o_brw) ? OST_CONNECT :MDS_CONNECT;
124 struct ptlrpc_connection *c;
129 rc = class_connect(conn, obd, cluuid);
134 cli->cl_conn_count++;
135 if (cli->cl_conn_count > 1)
138 obd->obd_namespace = ldlm_namespace_new(obd->obd_name,
139 LDLM_NAMESPACE_CLIENT);
140 if (obd->obd_namespace == NULL)
141 GOTO(out_disco, rc = -ENOMEM);
143 request = ptlrpc_prep_req(&cli->cl_import, rq_opc, 2, size, tmp);
145 GOTO(out_ldlm, rc = -ENOMEM);
147 request->rq_level = LUSTRE_CONN_NEW;
148 request->rq_replen = lustre_msg_size(0, NULL);
149 request->rq_reqmsg->addr = conn->addr;
150 request->rq_reqmsg->cookie = conn->cookie;
151 c = class_conn2export(conn)->exp_connection = request->rq_connection;
153 rc = ptlrpc_queue_wait(request);
154 rc = ptlrpc_check_status(request, rc);
158 list_add(&cli->cl_import.imp_chain, &c->c_imports);
159 c->c_level = LUSTRE_CONN_FULL;
160 cli->cl_import.imp_handle.addr = request->rq_repmsg->addr;
161 cli->cl_import.imp_handle.cookie = request->rq_repmsg->cookie;
163 recovd_conn_manage(c, ptlrpc_recovd, ll_recover);
167 ptlrpc_free_req(request);
170 ldlm_namespace_free(obd->obd_namespace);
171 obd->obd_namespace = NULL;
173 class_disconnect(conn);
181 int client_obd_disconnect(struct lustre_handle *conn)
183 struct obd_device *obd = class_conn2obd(conn);
184 struct client_obd *cli = &obd->u.cli;
185 int rq_opc = (obd->obd_type->typ_ops->o_brw) ? OST_DISCONNECT : MDS_DISCONNECT;
186 struct ptlrpc_request *request = NULL;
191 if (!cli->cl_conn_count) {
192 CERROR("disconnecting disconnected device (%s)\n",
194 GOTO(out_sem, rc = -EINVAL);
197 cli->cl_conn_count--;
198 if (cli->cl_conn_count)
199 GOTO(out_disco, rc = 0);
201 ldlm_namespace_free(obd->obd_namespace);
202 obd->obd_namespace = NULL;
203 request = ptlrpc_prep_req(&cli->cl_import, rq_opc, 0, NULL, NULL);
205 GOTO(out_disco, rc = -ENOMEM);
207 request->rq_replen = lustre_msg_size(0, NULL);
209 rc = ptlrpc_queue_wait(request);
216 ptlrpc_free_req(request);
218 err = class_disconnect(conn);
221 list_del_init(&cli->cl_import.imp_chain);