LU-1214 ldlm: splits server specific lock handling from client

[fs/lustre-release.git] / lustre / include / lustre_disk.h

diff --git a/lustre/include/lustre_disk.h b/lustre/include/lustre_disk.h
index 17e04e5..ad4da56 100644 (file)
--- a/lustre/include/lustre_disk.h
+++ b/lustre/include/lustre_disk.h
@@ -29,8 +29,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011 Whamcloud, Inc.
- *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -274,7 +273,14 @@ struct lustre_mount_data {
 #define OBD_INCOMPAT_IAM_DIR    0x00000040
 /** LMA attribute contains per-inode incompatible flags */
 #define OBD_INCOMPAT_LMA        0x00000080
-
+/** lmm_stripe_count has been shrunk from __u32 to __u16 and the remaining 16
+ * bits are now used to store a generation. Once we start changing the layout
+ * and bumping the generation, old versions expecting a 32-bit lmm_stripe_count
+ * will be confused by interpreting stripe_count | gen << 16 as the actual
+ * stripe count */
+#define OBD_INCOMPAT_LMM_VER    0x00000100
+/** multiple OI files for MDT */
+#define OBD_INCOMPAT_MULTI_OI   0x00000200
 
 /* Data stored per server at the head of the last_rcvd file.  In le32 order.
    This should be common to filter_internal.h, lustre_mds.h */