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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) 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_LMV
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <asm/div64.h>
#include <linux/seq_file.h>
#include "../include/obd_support.h"
#include "../include/lustre/lustre_idl.h"
#include "../include/lustre_fid.h"
#include "../include/lustre_lib.h"
#include "../include/lustre_net.h"
#include "../include/lustre_dlm.h"
#include "../include/obd_class.h"
#include "../include/lprocfs_status.h"
#include "lmv_internal.h"
int lmv_fld_lookup(struct lmv_obd *lmv,
const struct lu_fid *fid,
u32 *mds)
{
int rc;
/* FIXME: Currently ZFS still use local seq for ROOT unfortunately, and
* this fid_is_local check should be removed once LU-2240 is fixed */
LASSERTF((fid_seq_in_fldb(fid_seq(fid)) ||
fid_seq_is_local_file(fid_seq(fid))) &&
fid_is_sane(fid), DFID" is insane!\n", PFID(fid));
rc = fld_client_lookup(&lmv->lmv_fld, fid_seq(fid), mds,
LU_SEQ_RANGE_MDT, NULL);
if (rc) {
CERROR("Error while looking for mds number. Seq %#llx, err = %d\n",
fid_seq(fid), rc);
return rc;
}
CDEBUG(D_INODE, "FLD lookup got mds #%x for fid="DFID"\n",
*mds, PFID(fid));
if (*mds >= lmv->desc.ld_tgt_count) {
CERROR("FLD lookup got invalid mds #%x (max: %x) for fid=" DFID "\n", *mds, lmv->desc.ld_tgt_count,
PFID(fid));
rc = -EINVAL;
}
return rc;
}
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