LU-4684 migrate: migrate striped directory

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

diff --git a/lustre/include/uapi/linux/lustre/lustre_idl.h b/lustre/include/uapi/linux/lustre/lustre_idl.h
index 8d7b58c..a600a39 100644 (file)
--- a/lustre/include/uapi/linux/lustre/lustre_idl.h
+++ b/lustre/include/uapi/linux/lustre/lustre_idl.h
@@ -880,7 +880,8 @@ struct ptlrpc_body_v2 {
 
 #define MDT_CONNECT_SUPPORTED2 (OBD_CONNECT2_FILE_SECCTX | OBD_CONNECT2_FLR | \
                                 OBD_CONNECT2_SUM_STATFS | \
-                               OBD_CONNECT2_LOCK_CONVERT)
+                               OBD_CONNECT2_LOCK_CONVERT | \
+                               OBD_CONNECT2_DIR_MIGRATE)
 
 #define OST_CONNECT_SUPPORTED  (OBD_CONNECT_SRVLOCK | OBD_CONNECT_GRANT | \
                                OBD_CONNECT_REQPORTAL | OBD_CONNECT_VERSION | \
@@ -2161,9 +2162,16 @@ struct lmv_mds_md_v1 {
                                         * used for now. Higher 16 bits will
                                         * be used to mark the object status,
                                         * for example migrating or dead. */
-       __u32 lmv_layout_version;       /* Used for directory restriping */
-       __u32 lmv_padding1;
-       __u64 lmv_padding2;
+       __u32 lmv_layout_version;       /* increased each time layout changed,
+                                        * by directory migration, restripe
+                                        * and LFSCK. */
+       __u32 lmv_migrate_offset;       /* once this is set, it means this
+                                        * directory is been migrated, stripes
+                                        * before this offset belong to target,
+                                        * from this to source. */
+       __u32 lmv_migrate_hash;         /* hash type of source stripes of
+                                        * migrating directory */
+       __u32 lmv_padding2;
        __u64 lmv_padding3;
        char lmv_pool_name[LOV_MAXPOOLNAME + 1];        /* pool name */
        struct lu_fid lmv_stripe_fids[0];       /* FIDs for each stripe */