GCE: provide an option to disable docker's live-restore

cluster/gce/config-default.sh

@@ -254,12 +254,16 @@ if [ ${ENABLE_IP_ALIASES} = true ]; then
   PROVIDER_VARS="${PROVIDER_VARS:-} ENABLE_IP_ALIASES"
 fi
 
-
 # Enable GCE Alpha features.
 if [[ -n "${GCE_ALPHA_FEATURES:-}" ]]; then
   PROVIDER_VARS="${PROVIDER_VARS:-} GCE_ALPHA_FEATURES"
 fi
 
+# Disable Docker live-restore.
+if [[ -n "${DISABLE_DOCKER_LIVE_RESTORE:-}" ]]; then
+  PROVIDER_VARS="${PROVIDER_VARS:-} DISABLE_DOCKER_LIVE_RESTORE"
+fi
+
 # Override default GLBC image
 if [[ -n "${GCE_GLBC_IMAGE:-}" ]]; then
   PROVIDER_VARS="${PROVIDER_VARS:-} GCE_GLBC_IMAGE"

cluster/gce/config-test.sh

@@ -302,6 +302,11 @@ if [[ -n "${GCE_ALPHA_FEATURES:-}" ]]; then
   PROVIDER_VARS="${PROVIDER_VARS:-} GCE_ALPHA_FEATURES"
 fi
 
+# Disable Docker live-restore.
+if [[ -n "${DISABLE_DOCKER_LIVE_RESTORE:-}" ]]; then
+  PROVIDER_VARS="${PROVIDER_VARS:-} DISABLE_DOCKER_LIVE_RESTORE"
+fi
+
 # Override default GLBC image
 if [[ -n "${GCE_GLBC_IMAGE:-}" ]]; then
   PROVIDER_VARS="${PROVIDER_VARS:-} GCE_GLBC_IMAGE"

cluster/gce/gci/configure-helper.sh

@@ -855,6 +855,12 @@ function assemble-docker-flags {
   docker_opts+=" --log-opt=max-size=${DOCKER_LOG_MAX_SIZE:-10m}"
   docker_opts+=" --log-opt=max-file=${DOCKER_LOG_MAX_FILE:-5}"
 
+  # Disable live-restore if the environment variable is set.
+
+  if [[ "${DISABLE_DOCKER_LIVE_RESTORE:-false}" == "true" ]]; then
+    docker_opts+=" --live-restore=false"
+  fi
+
   echo "DOCKER_OPTS=\"${docker_opts} ${EXTRA_DOCKER_OPTS:-}\"" > /etc/default/docker
 
   if [[ "${use_net_plugin}" == "true" ]]; then