| /* |
| * 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; |
| } |