diff --git a/lib/nova b/lib/nova
index b04f94beef..17c90dfe26 100644
--- a/lib/nova
+++ b/lib/nova
@@ -1054,7 +1054,7 @@ function start_nova_compute {
 
     # Set rebuild timeout longer for BFV instances because we likely have
     # slower disk than expected. Default is 20s/GB
-    iniset $NOVA_CPU_CONF DEFAULT reimage_timeout_per_gb 60
+    iniset $NOVA_CPU_CONF DEFAULT reimage_timeout_per_gb 180
 
     # Configure the OVSDB connection for os-vif
     if [ -n "$OVSDB_SERVER_LOCAL_HOST" ]; then