Backup running vm

bakvbox.sh

#!/bin/bash
# name: bakvbox.sh

# backup to where
_BAKPATH="/backup/vm-backup"

# cmd to show running vm:
# "vboxmanage list runningvms"
_VMNAME="elastix-25"

# Find Disk image location:
# "vboxmanage showvminfo elastix-25 | grep vdi"
_IMAGE="/home/bizamin/VirtualBox VMs/elastix-25/elastix-25.vdi"

# Find configure file
# vboxmanage showvminfo elastix-25 | grep '.vbox'
_CONFIG="/home/bizamin/VirtualBox VMs/elastix-25/elastix-25.vbox"

#### Code ####

date

cd $_BAKPATH

echo "Saving state..."
# pause 時是不能 clone 的
vboxmanage controlvm $_VMNAME savestate

echo "backup the VM..."

# bak config
cp "$_CONFIG" ./

# export 係唔 work 的, 會有 error 1
#vboxmanage export $_VMNAME --output $_VMNAME-export.ova &> export.log

# shrink happens automatically
vboxmanage clonehd "$_IMAGE" $_BAKPATH/${_VMNAME}-export.vdi

echo "Resuming previous state..."
vboxmanage startvm $_VMNAME --type headless

# show disk info
vboxmanage showmediuminfo $_BAKPATH/${_VMNAME}-export.vdi

date

==============

error 1

VBoxManage: error: The machine 'elastix-25' is already locked by a session 
    (or being locked or unlocked)
VBoxManage: error: Details: code VBOX_E_INVALID_OBJECT_STATE (0x80bb0007), 
    component MachineWrap, interface IMachine, callee nsISupports
VBoxManage: error: Context: "LaunchVMProcess(a->session, 
    sessionType.raw(), env.raw(), progress.asOutParam())" at line 589 of file VBoxManageMisc.cpp'