-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2001-2003 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * 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.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License 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).
*
- * Lustre 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 for more details.
+ * 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
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2014, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/ptlrpc/llog_net.c
*
* OST<->MDS recovery logging infrastructure.
*
* Invariants in implementation:
* - we do not share logs among different OST<->MDS connections, so that
* if an OST or MDS fails it need only look at log(s) relevant to itself
+ *
+ * Author: Andreas Dilger <adilger@clusterfs.com>
*/
#define DEBUG_SUBSYSTEM S_LOG
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-
-#ifdef __KERNEL__
-#include <linux/fs.h>
-#else
-#include <liblustre.h>
-#endif
-
-#include <linux/obd_class.h>
-#include <linux/lustre_log.h>
-#include <portals/list.h>
-#include <linux/lvfs.h>
-
-#ifdef __KERNEL__
-int llog_origin_connect(struct llog_ctxt *ctxt, int count,
- struct llog_logid *logid, struct llog_gen *gen,
- struct obd_uuid *uuid)
-{
- struct llog_gen_rec *lgr;
- struct obd_import *imp;
- struct ptlrpc_request *request;
- struct llogd_conn_body *req_body;
- int size = sizeof(struct llogd_conn_body);
- int rc;
- ENTRY;
-
- if (list_empty(&ctxt->loc_handle->u.chd.chd_head)) {
- CDEBUG(D_HA, "there is no record related to ctxt %p\n", ctxt);
- RETURN(0);
- }
-
- /* FIXME what value for gen->conn_cnt */
- LLOG_GEN_INC(ctxt->loc_gen);
-
- /* first add llog_gen_rec */
- OBD_ALLOC(lgr, sizeof(*lgr));
- if (!lgr)
- RETURN(-ENOMEM);
- lgr->lgr_hdr.lrh_len = lgr->lgr_tail.lrt_len = sizeof(*lgr);
- lgr->lgr_hdr.lrh_type = LLOG_GEN_REC;
- lgr->lgr_gen = ctxt->loc_gen;
- rc = llog_add(ctxt, &lgr->lgr_hdr, NULL, NULL, 1);
- OBD_FREE(lgr, sizeof(*lgr));
- if (rc != 1)
- RETURN(rc);
-
- LASSERT(ctxt->loc_imp);
- imp = ctxt->loc_imp;
-
- request = ptlrpc_prep_req(imp, LLOG_ORIGIN_CONNECT, 1, &size, NULL);
- if (!request)
- RETURN(-ENOMEM);
-
- req_body = lustre_msg_buf(request->rq_reqmsg, 0, sizeof(*req_body));
-
- req_body->lgdc_gen = ctxt->loc_gen;
- req_body->lgdc_logid = ctxt->loc_handle->lgh_id;
- req_body->lgdc_ctxt_idx = ctxt->loc_idx + 1;
- request->rq_replen = lustre_msg_size(0, NULL);
-
- rc = ptlrpc_queue_wait(request);
- ptlrpc_req_finished(request);
-
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_origin_connect);
-
-int llog_handle_connect(struct ptlrpc_request *req)
-{
- struct obd_device *obd = req->rq_export->exp_obd;
- struct llogd_conn_body *req_body;
- struct llog_ctxt *ctxt;
- int rc;
- ENTRY;
-
- req_body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*req_body));
-
- ctxt = llog_get_context(obd, req_body->lgdc_ctxt_idx);
- rc = llog_connect(ctxt, 1, &req_body->lgdc_logid,
- &req_body->lgdc_gen, NULL);
- if (rc != 0)
- CERROR("failed at llog_relp_connect\n");
-
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_handle_connect);
-
-int llog_receptor_accept(struct llog_ctxt *ctxt, struct obd_import *imp)
-{
- ENTRY;
- LASSERT(ctxt);
- ctxt->loc_imp = imp;
- RETURN(0);
-}
-EXPORT_SYMBOL(llog_receptor_accept);
+#include <libcfs/libcfs.h>
+#include <obd_class.h>
+#include <lustre_log.h>
int llog_initiator_connect(struct llog_ctxt *ctxt)
{
+ struct obd_import *new_imp;
ENTRY;
+
LASSERT(ctxt);
- ctxt->loc_imp = ctxt->loc_obd->u.cli.cl_import;
+ new_imp = ctxt->loc_obd->u.cli.cl_import;
+ LASSERTF(ctxt->loc_imp == NULL || ctxt->loc_imp == new_imp,
+ "%p - %p\n", ctxt->loc_imp, new_imp);
+ mutex_lock(&ctxt->loc_mutex);
+ if (ctxt->loc_imp != new_imp) {
+ if (ctxt->loc_imp)
+ class_import_put(ctxt->loc_imp);
+ ctxt->loc_imp = class_import_get(new_imp);
+ }
+ mutex_unlock(&ctxt->loc_mutex);
RETURN(0);
}
EXPORT_SYMBOL(llog_initiator_connect);
-
-#else /* !__KERNEL__ */
-
-int llog_origin_connect(struct llog_ctxt *ctxt, int count,
- struct llog_logid *logid, struct llog_gen *gen)
-{
- return 0;
-}
-
-int llog_initiator_connect(struct llog_ctxt *ctxt)
-{
- return 0;
-}
-#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff