diff --git a/mirror-image/scripts/flush_disk.sh b/mirror-image/scripts/flush_disk.sh
new file mode 100644
index 0000000..5d57919
--- /dev/null
+++ b/mirror-image/scripts/flush_disk.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+set -x
+
+echo 3 > /proc/sys/vm/drop_caches
+sync
diff --git a/mirror-image/template.json b/mirror-image/template.json
index 6322511..59e477c 100644
--- a/mirror-image/template.json
+++ b/mirror-image/template.json
@@ -94,7 +94,7 @@
         "scripts/info.sh",
         "scripts/cleanup.sh",
         "scripts/cleanup_salt.sh",
-        "scripts/zerodisk.sh"
+        "scripts/flush_disk.sh"
       ]
     },
     {
diff --git a/packer-image-buid.groovy b/packer-image-buid.groovy
index 2e90877..5a5bdd2 100644
--- a/packer-image-buid.groovy
+++ b/packer-image-buid.groovy
@@ -223,6 +223,8 @@
 
                             common.infoMsg("Run build with:")
                             sh(script: 'printenv|sort')
+                            common.infoMsg("Free disk space by 'df -h' command:")
+                            sh(script: 'df -h')
                             sh(script: "set -xe; packer build -only='openstack' ${_packer_args} -parallel=false template.json")
                             _os_private = "${workspace}/${job_env.BUILD_OS}/os_${job_env.BUILD_OS}.pem"
                             if (fileExists(_os_private)) {
@@ -255,6 +257,8 @@
                                  "PACKER_IMAGES_CACHE=${ImagesCacheFolder}"] + extra_vars_list) {
                             common.infoMsg("Run build with:")
                             sh(script: 'printenv|sort')
+                            common.infoMsg("Free disk space by 'df -h' command:")
+                            sh(script: 'df -h')
                             sh(script: "set -xe ; packer build -on-error=ask -only='qemu' ${_packer_args} -parallel=false template.json".toString())
 
                             def packerStatus = sh(script: "grep \"Some builds didn't complete successfully and had errors\" ${PACKER_LOG_PATH}", returnStatus: true)