LU-1303 fld: verify support for range lookups

[fs/lustre-release.git] / lustre / fld / fld_handler.c

diff --git a/lustre/fld/fld_handler.c b/lustre/fld/fld_handler.c
index 9a30103..1d28b21 100644 (file)
--- a/lustre/fld/fld_handler.c
+++ b/lustre/fld/fld_handler.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.
@@ -28,6 +26,8 @@
 /*
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -42,9 +42,6 @@
  * Author: Pravin Shelar <pravin.shelar@sun.com>
  */
 
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
 #define DEBUG_SUBSYSTEM S_FLD
 
 #ifdef __KERNEL__
@@ -111,6 +108,35 @@ static void __exit fld_mod_exit(void)
         }
 }
 
+int fld_declare_server_create(struct lu_server_fld *fld,
+                              const struct lu_env *env,
+                              struct thandle *th)
+{
+        struct dt_object *dt_obj = fld->lsf_obj;
+        int rc;
+
+        ENTRY;
+
+       if (fld->lsf_no_range_lookup) {
+               /* Stub for underlying FS which can't lookup ranges */
+               return 0;
+       }
+
+        /* for ldiskfs OSD it's enough to declare operation with any ops
+         * with DMU we'll probably need to specify exact key/value */
+        rc = dt_obj->do_index_ops->dio_declare_delete(env, dt_obj, NULL, th);
+        if (rc)
+                GOTO(out, rc);
+        rc = dt_obj->do_index_ops->dio_declare_delete(env, dt_obj, NULL, th);
+        if (rc)
+                GOTO(out, rc);
+        rc = dt_obj->do_index_ops->dio_declare_insert(env, dt_obj,
+                                                      NULL, NULL, th);
+out:
+        RETURN(rc);
+}
+EXPORT_SYMBOL(fld_declare_server_create);
+
 /**
  * Insert FLD index entry and update FLD cache.
  *
@@ -245,7 +271,6 @@ out:
 
         RETURN(rc);
 }
-
 EXPORT_SYMBOL(fld_server_create);
 
 /**
@@ -342,15 +367,14 @@ static int fld_server_handle(struct lu_server_fld *fld,
 static int fld_req_handle(struct ptlrpc_request *req,
                           struct fld_thread_info *info)
 {
-        struct lu_site *site;
+        struct obd_export *exp = req->rq_export;
+        struct lu_site *site = exp->exp_obd->obd_lu_dev->ld_site;
         struct lu_seq_range *in;
         struct lu_seq_range *out;
         int rc;
         __u32 *opc;
         ENTRY;
 
-        site = req->rq_export->exp_obd->obd_lu_dev->ld_site;
-
         rc = req_capsule_server_pack(info->fti_pill);
         if (rc)
                 RETURN(err_serious(rc));
@@ -365,6 +389,13 @@ static int fld_req_handle(struct ptlrpc_request *req,
                         RETURN(err_serious(-EPROTO));
                 *out = *in;
 
+                /* For old 2.0 client, the 'lsr_flags' is uninitialized.
+                 * Set it as 'LU_SEQ_RANGE_MDT' by default.
+                 * Old 2.0 liblustre client cannot talk with new 2.1 server. */
+                if (!(exp->exp_connect_flags & OBD_CONNECT_64BITHASH) &&
+                    !exp->exp_libclient)
+                        out->lsr_flags = LU_SEQ_RANGE_MDT;
+
                 rc = fld_server_handle(lu_site2md(site)->ms_server_fld,
                                        req->rq_svc_thread->t_env,
                                        *opc, out, info);
@@ -466,7 +497,14 @@ static int fld_server_proc_init(struct lu_server_fld *fld)
                 RETURN(rc);
         }
 
-        RETURN(rc);
+       rc = lprocfs_seq_create(fld->lsf_proc_dir, "fldb", 0444,
+                               &fld_proc_seq_fops, fld);
+       if (rc) {
+               lprocfs_remove(&fld->lsf_proc_dir);
+               fld->lsf_proc_dir = NULL;
+       }
+
+       RETURN(rc);
 }
 
 static void fld_server_proc_fini(struct lu_server_fld *fld)