Index: geom_vinum.c
===================================================================
--- geom_vinum.c	(revision 204558)
+++ geom_vinum.c	(working copy)
@@ -790,6 +790,7 @@
 					break;
 				}
 				p->synced = 0;
+				p->flags |= GV_PLEX_REBUILDING;
 				g_topology_assert_not();
 				g_topology_lock();
 				err = gv_access(p->vol_sc->provider, 1, 1, 0);