Bug 1247666

method used

###################################
#
# EVM Automate Method: createSnapshot
#
# Notes: This method creates a snapshot on a given VM via web service API
#
# Inputs: GUID, [snap_name, snap_description]
#
###################################
begin
  @method = 'createSnapshot'
  $evm.log("info", "#{@method} - EVM Automate Method Started")

  # Turn of verbose logging
  @debug = true

  ####################
  #
  # Method: createSnapshot
  #
  ####################
  def createSnapshot(vm, snap_name, snap_desc=snap_name)
    $evm.log("info","#{@method} - VM:<#{vm.name}> Creating Snapshot:<#{snap_name}> Description:<#{snap_desc}>")
    vm.create_snapshot(snap_name, snap_desc)
  end

  #$evm.root.attributes.sort.each { |k, v| $evm.log("info", "\t#{k}: #{v}")} if @debug

  # Get VM object from the root object
  vm = $evm.root['vm']

  # If VM is nil then assume web service call and look for GUID from root object
  if vm.nil?
    $evm.log("info","Execution of method:<#{@method}> via API detected") if @debug
    # Get GUID from foot object
    guid = $evm.root['guid']

    # Lookup VM by GUID
    vm = $evm.vmdb('vm').find_by_guid(guid)
    # Bail out if VM is not found
    raise "#{@method} - VM with GUID:<#{guid}> not found" if vm.nil?
    $evm.log("info","#{@method} - Assigning VM:<#{vm.name}> to root object") if @debug
    $evm.root['vm'] = vm
    $evm.log("info","#{@method} - Found VM:<#{vm.name}> via GUID:<#{guid}>") if @debug
  end

  snap_name = $evm.root['snap_name'] || "Snapshot #{Time.now}"
  snap_desc = $evm.root['snap_desc'] || "Snapshot:<#{snap_name}> for #{vm.name}"

  # Call createSnapshot method
  createSnapshot(vm, snap_name, snap_desc)

  #
  # Exit method
  #
  $evm.log("info", "#{@method} - EVM Automate Method Ended")
  exit MIQ_OK


  #
  # Set Ruby rescue behavior
  #
rescue => err
  $evm.log("error", "#{@method} - [#{err}]\n#{err.backtrace.join("\n")}")
  exit MIQ_ABORT
end

VM snapshot creation is not supported on RHEV-M VMs at this time.  It is only supported against VMware VMs.

The automate service model exposed the create_snapshot and other snapshot methods on the base VM model which lead to errors being raised further along in the code making it difficult to interrupter the error message.

As of PR https://github.com/ManageIQ/manageiq/pull/3707, related to Bug 1247664, the snapshot methods in automate have been moved and are only available on the VMware VM object.