/* -*- 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 <linux/kmod.h>
#include <linux/version.h>
#include <linux/sched.h>
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
#include <linux/mount.h>
-#endif
#include <obd_class.h>
#include <obd_support.h>
#include <lustre_disk.h>
#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 ((obd->md_stats == NULL) &&
+ (rc = lprocfs_alloc_md_stats(obd, LPROC_MGS_LAST)))
+ 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
or errors */
-static struct dentry *mgs_fid2dentry(struct mgs_obd *mgs, struct ll_fid *fid)
+static struct dentry *mgs_fid2dentry(struct mgs_obd *mgs,
+ __u64 ino, __u32 gen)
{
char fid_name[32];
- unsigned long ino = fid->id;
- __u32 generation = fid->generation;
struct inode *inode;
struct dentry *result;
+ ENTRY;
CDEBUG(D_DENTRY, "--> mgs_fid2dentry: ino/gen %lu/%u, sb %p\n",
- ino, generation, mgs->mgs_sb);
+ (unsigned long)ino, gen, mgs->mgs_sb);
if (ino == 0)
RETURN(ERR_PTR(-ESTALE));
-
- snprintf(fid_name, sizeof(fid_name), "0x%lx", ino);
-
- /* under ext3 this is neither supposed to return bad inodes
- nor NULL inodes. */
+
+ 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));
if (IS_ERR(result))
RETURN(result);
RETURN(ERR_PTR(-ENOENT));
}
- if (generation && inode->i_generation != generation) {
+ if (gen && inode->i_generation != gen) {
/* we didn't find the right inode.. */
CDEBUG(D_INODE, "found wrong generation: inode %lu, link: %lu, "
"count: %d, generation %u/%u\n", inode->i_ino,
- (unsigned long)inode->i_nlink,
- atomic_read(&inode->i_count), inode->i_generation,
- generation);
+ (unsigned long)inode->i_nlink, atomic_read(&inode->i_count),
+ inode->i_generation, gen);
l_dput(result);
RETURN(ERR_PTR(-ENOENT));
}
RETURN(result);
}
-static struct dentry *mgs_lvfs_fid2dentry(__u64 id, __u32 gen, __u64 gr,
- void *data)
+static struct dentry *mgs_lvfs_fid2dentry(__u64 id, __u32 gen,
+ __u64 gr, void *data)
{
struct obd_device *obd = data;
- struct ll_fid fid;
- fid.id = id;
- fid.generation = gen;
- return mgs_fid2dentry(&obd->u.mgs, &fid);
+ return mgs_fid2dentry(&obd->u.mgs, id, gen);
}
struct lvfs_callback_ops mgs_lvfs_ops = {
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);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff