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// SPDX-License-Identifier: GPL-2.0
/*
* 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.gnu.org/licenses/gpl-2.0.html
*
* 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 <obd_support.h>
#include <lustre_fid.h>
#include <lustre_lib.h>
#include <lustre_net.h>
#include <lustre_dlm.h>
#include <obd_class.h>
#include <lprocfs_status.h>
#include "lmv_internal.h"
int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds)
{
struct obd_device *obd = lmv2obd_dev(lmv);
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
*/
if (!fid_is_sane(fid) || !(fid_seq_in_fldb(fid_seq(fid)) ||
fid_seq_is_local_file(fid_seq(fid)))) {
CERROR("%s: invalid FID " DFID "\n", obd->obd_name, PFID(fid));
return -EINVAL;
}
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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