/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * lustre/mgs/mgs_fs.c
- * Lustre Management Server (MGS) filesystem interface code
+ * GPL HEADER START
*
- * Copyright (C) 2006 Cluster File Systems, Inc.
- * Author: Nathan Rutman <nathan@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 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/mgs/mgs_fs.c
+ *
+ * Lustre Management Server (MGS) filesystem interface code
+ *
+ * Author: Nathan Rutman <nathan@clusterfs.com>
*/
+
#ifndef EXPORT_SYMTAB
# define EXPORT_SYMTAB
#endif
#include <libcfs/list.h>
#include "mgs_internal.h"
+static int mgs_export_stats_init(struct obd_device *obd, struct obd_export *exp,
+ void *localdata)
+{
+ lnet_nid_t *client_nid = localdata;
+ int rc, newnid;
+
+ rc = lprocfs_exp_setup(exp, client_nid, &newnid);
+ if (rc) {
+ /* Mask error for already created
+ * /proc entries */
+ if (rc == -EALREADY)
+ rc = 0;
+ return rc;
+ }
+
+ if (newnid) {
+ /* Always add in ldlm_stats */
+ exp->exp_nid_stats->nid_ldlm_stats =
+ lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC,
+ LPROCFS_STATS_FLAG_NOPERCPU);
+ if (exp->exp_nid_stats->nid_ldlm_stats == NULL)
+ return -ENOMEM;
+ lprocfs_init_ldlm_stats(exp->exp_nid_stats->nid_ldlm_stats);
+ rc = lprocfs_register_stats(exp->exp_nid_stats->nid_proc,
+ "ldlm_stats",
+ exp->exp_nid_stats->nid_ldlm_stats);
+ }
+ return rc;
+}
+
+/**
+ * Add client export data to the MGS. This data is currently NOT stored on
+ * disk in the last_rcvd file or anywhere else. In the event of a MGS
+ * crash all connections are treated as new connections.
+ */
+int mgs_client_add(struct obd_device *obd, struct obd_export *exp,
+ void *localdata)
+{
+ return mgs_export_stats_init(obd, exp, localdata);
+}
+
+/* Remove client export data from the MGS */
+int mgs_client_free(struct obd_export *exp)
+{
+ return 0;
+}
+
/* Same as mds_fid2dentry */
/* Look up an entry by inode number. */
/* this function ONLY returns valid dget'd dentries with an initialized inode
if (ino == 0)
RETURN(ERR_PTR(-ESTALE));
-
+
snprintf(fid_name, sizeof(fid_name), "0x%lx", (unsigned long)ino);
-
+
/* under ext3 this is neither supposed to return bad inodes nor NULL
inodes. */
result = ll_lookup_one_len(fid_name, mgs->mgs_fid_de, strlen(fid_name));
push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
/* Setup the configs dir */
- dentry = simple_mkdir(current->fs->pwd, MOUNT_CONFIGS_DIR, 0777, 1);
+ dentry = simple_mkdir(current->fs->pwd, mnt, MOUNT_CONFIGS_DIR, 0777, 1);
if (IS_ERR(dentry)) {
rc = PTR_ERR(dentry);
- CERROR("cannot create %s directory: rc = %d\n",
+ CERROR("cannot create %s directory: rc = %d\n",
MOUNT_CONFIGS_DIR, rc);
GOTO(err_pop, rc);
}
push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
if (mgs->mgs_configs_dir) {
- /*CERROR("configs dir dcount=%d\n",
- atomic_read(&mgs->mgs_configs_dir->d_count));*/
l_dput(mgs->mgs_configs_dir);
mgs->mgs_configs_dir = NULL;
}
- shrink_dcache_parent(mgs->mgs_fid_de);
- /*CERROR("fid dir dcount=%d\n",
- atomic_read(&mgs->mgs_fid_de->d_count));*/
dput(mgs->mgs_fid_de);
+ shrink_dcache_sb(mgs->mgs_sb);
pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff