LU-1445 lod: Add FLD lookup to LOD

[fs/lustre-release.git] / lustre / lmv / lmv_fld.c

diff --git a/lustre/lmv/lmv_fld.c b/lustre/lmv/lmv_fld.c
index 5f91a7f..b630bbc 100644 (file)
--- a/lustre/lmv/lmv_fld.c
+++ b/lustre/lmv/lmv_fld.c
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -28,15 +26,14 @@
 /*
  * 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.
  */
 
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
 #define DEBUG_SUBSYSTEM S_LMV
 #ifdef __KERNEL__
 #include <linux/slab.h>
@@ -64,17 +61,28 @@ int lmv_fld_lookup(struct lmv_obd *lmv,
                    const struct lu_fid *fid,
                    mdsno_t *mds)
 {
-        int rc;
-        ENTRY;
+       int rc;
+       ENTRY;
 
-        LASSERT(fid_is_sane(fid));
-        rc = fld_client_lookup(&lmv->lmv_fld, fid_seq(fid), mds, NULL);
+       LASSERTF(fid_is_sane(fid), DFID" is insane!\n", PFID(fid));
+
+       /* FIXME: Because ZFS still use LOCAL fid sequence for root,
+        * and root will always be in MDT0, for local fid, it will
+        * return 0 directly. And it should be removed once the root
+        * FID has been assigned with special sequence */
+       if (fid_seq(fid) == FID_SEQ_LOCAL_FILE) {
+               *mds = 0;
+               RETURN(0);
+       }
+
+       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 "LPX64
                        ", err = %d\n", fid_seq(fid), rc);
                 RETURN(rc);
         }
-        
+
         CDEBUG(D_INODE, "FLD lookup got mds #%x for fid="DFID"\n",
                *mds, PFID(fid));