diff --git a/packer-image-buid.groovy b/packer-image-buid.groovy
index 5a5bdd2..b615cdc 100644
--- a/packer-image-buid.groovy
+++ b/packer-image-buid.groovy
@@ -86,9 +86,28 @@
     }
     return data_list
 }
+// Necessary to have ~100G of volume on node for build offline image. Code below chooses huge available slave.
+def getHugeSlave() {
+    slaves = nodesByLabel("virtual")
+    def targetSlave = ''
+    for (slave in slaves) {
+        node(slave){
+            outputMsg = sh(returnStdout: true, script: '''#!/bin/bash
+                        df --block-size=G / | awk '{print $4}' | sed -n 2p | sed 's/.$//'
+                        ''')
+        }
+        if(outputMsg.toInteger() >= 120){
+            targetSlave = slave
+            break
+        }
+    }
+    return targetSlave
+}
+
+nodeForBuild = getHugeSlave()
 
 timeout(time: 6, unit: 'HOURS') {
-    node(slaveNode) {
+    node(nodeForBuild) {
         def workspace = common.getWorkspace()
         def openstackEnv = "${workspace}/venv"
         def rcFile = ''