diff --git a/src/vm/node_modules/VM.js b/src/vm/node_modules/VM.js
index 1412ad57c..6dbf52c80 100644
--- a/src/vm/node_modules/VM.js
+++ b/src/vm/node_modules/VM.js
@@ -3287,6 +3287,9 @@ function startVM(vmobj, extra, callback)
 
     // This actually creates the qemu process
     script = '#!/usr/bin/bash\n\n' +
+        'for i in {9..1}; do mv -f /tmp/vm.log.$((${i} - 1)) /tmp/vm.log.${i};' +
+            ' done\n' +
+        'mv -f /tmp/vm.log /tmp/vm.log.0\n\n' +
         "exec >/tmp/vm.log 2>&1\n\n" +
         "set -o xtrace\n\n" +
         'exec /smartdc/bin/qemu-system-x86_64 "' + cmdargs.join('" "') +