LU-9846 lod: Add overstriping support

[fs/lustre-release.git] / lustre / include / uapi / linux / lustre / lustre_user.h

diff --git a/lustre/include/uapi/linux/lustre/lustre_user.h b/lustre/include/uapi/linux/lustre/lustre_user.h
index 31a6d4e..0edb929 100644 (file)
--- a/lustre/include/uapi/linux/lustre/lustre_user.h
+++ b/lustre/include/uapi/linux/lustre/lustre_user.h
@@ -547,11 +547,11 @@ struct fsxattr {
 #define LMV_USER_MAGIC_V0      0x0CD20CD0    /* old default lmv magic*/
 #define LMV_USER_MAGIC_SPECIFIC        0x0CD40CD0
 
-#define LOV_PATTERN_NONE       0x000
-#define LOV_PATTERN_RAID0      0x001
-#define LOV_PATTERN_RAID1      0x002
-#define LOV_PATTERN_MDT                0x100
-#define LOV_PATTERN_CMOBD      0x200
+#define LOV_PATTERN_NONE               0x000
+#define LOV_PATTERN_RAID0              0x001
+#define LOV_PATTERN_RAID1              0x002
+#define LOV_PATTERN_MDT                        0x100
+#define LOV_PATTERN_OVERSTRIPING       0x200
 
 #define LOV_PATTERN_F_MASK     0xffff0000
 #define LOV_PATTERN_F_HOLE     0x40000000 /* there is hole in LOV EA */
@@ -563,9 +563,22 @@ struct fsxattr {
 static inline bool lov_pattern_supported(__u32 pattern)
 {
        return (pattern & ~LOV_PATTERN_F_RELEASED) == LOV_PATTERN_RAID0 ||
+              (pattern & ~LOV_PATTERN_F_RELEASED) ==
+                       (LOV_PATTERN_RAID0 | LOV_PATTERN_OVERSTRIPING) ||
               (pattern & ~LOV_PATTERN_F_RELEASED) == LOV_PATTERN_MDT;
 }
 
+/* RELEASED and MDT patterns are not valid in many places, so rather than
+ * having many extra checks on lov_pattern_supported, we have this separate
+ * check for non-released, non-DOM components
+ */
+static inline bool lov_pattern_supported_normal_comp(__u32 pattern)
+{
+       return pattern == LOV_PATTERN_RAID0 ||
+              pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_OVERSTRIPING);
+
+}
+
 #define LOV_MAXPOOLNAME 15
 #define LOV_POOLNAMEF "%.15s"
 
@@ -581,7 +594,7 @@ static inline bool lov_pattern_supported(__u32 pattern)
  * allocation that is sufficient for the current generation of systems.
  *
  * (max buffer size - lov+rpc header) / sizeof(struct lov_ost_data_v1) */
-#define LOV_MAX_STRIPE_COUNT 2000  /* ((12 * 4096 - 256) / 24) */
+#define LOV_MAX_STRIPE_COUNT 2000  /* ~((12 * 4096 - 256) / 24) */
 #define LOV_ALL_STRIPES       0xffff /* only valid for directories */
 #define LOV_V1_INSANE_STRIPE_COUNT 65532 /* maximum stripe count bz13933 */