LU-9771 flr: resync support and test tool

[fs/lustre-release.git] / lustre / ofd / ofd_objects.c

diff --git a/lustre/ofd/ofd_objects.c b/lustre/ofd/ofd_objects.c
index ec5fb4f..8ba286b 100644 (file)
--- a/lustre/ofd/ofd_objects.c
+++ b/lustre/ofd/ofd_objects.c
@@ -536,11 +536,20 @@ int ofd_object_ff_update(const struct lu_env *env, struct ofd_object *fo,
                        RETURN(-EPERM);
                }
 
+               if (ff->ff_layout_version & LU_LAYOUT_RESYNC) {
+                       /* this opens a new era of writing */
+                       ff->ff_layout_version = 0;
+                       ff->ff_range = 0;
+               }
+
                /* it's not allowed to change it to a smaller value */
                if (oa->o_layout_version < ff->ff_layout_version)
                        RETURN(-EINVAL);
 
-               if (ff->ff_layout_version == 0) {
+               if (ff->ff_layout_version == 0 ||
+                   oa->o_layout_version & LU_LAYOUT_RESYNC) {
+                       /* if LU_LAYOUT_RESYNC is set, it closes the era of
+                        * writing. Only mirror I/O can write this object. */
                        ff->ff_layout_version = oa->o_layout_version;
                        ff->ff_range = 0;
                } else if (oa->o_layout_version > ff->ff_layout_version) {