"use_linked_clone" fails in parallel mode

[legal90]

If you run vagrant up for the first time in multi-machine configuration, it fails with error telling that prlctl clone --linked couldn't be executed concurrently. It mostly like a Parallels Desktop issue, but should be worked around on the "vagrant-parallels" side.

Vagrantfile:

Vagrant.configure(2) do |config|
  config.vm.box = "parallels/centos-6.6"

  config.vm.define "centos_1"
  config.vm.define "centos_2"
  config.vm.define "centos_3"

  config.vm.provider "parallels" do |prl|
    prl.use_linked_clone = true
  end
end

$ vagrant up

<...>

An error occurred while executing the action on the 'centos_3'
machine. Please handle this error then try again:

There was an error while command execution. The command and stderr is shown below.

Command: ["/usr/local/bin/prlctl", "clone", "centos-6.6-x86_64", "--name", "centos-6.6-x86_64_1440573847293_55601", "--linked", "--id", "66adbac3-9fa7-410f-bbad-3ac58fa6f8f1"]

Stderr:
Failed to clone the VM: The virtual machine could not be found. The virtual machine is not registered in the virtual machine directory on your Mac. Contact the Parallels support team for assistance.

Parallels Desktop 11.0.0 (31193)
vagrant-parallels v1.4.2

[legal90]

Fixed in v1.4.3

[tradel]

Still an issue in 1.7.8.

First machine errored with:

Command: ["/usr/local/bin/prlctl", "unregister", "0b2fbbe0-8bd7-452d-94e6-f2f2c2b9941d"]

Stderr: Failed to unregister the VM: Unable to perform the action because the virtual machine is busy. The virtual machine is being cloned. Please try again later.

Second machine errored with:

padding error, need 74192792 block 16

[max-arnold]

I also often get hit by this:

Command: ["/usr/local/bin/prlctl", "unregister", "e75da2c8-df22-4562-ba86-8ba81c3dbbe9"]

Stderr: Failed to unregister the VM: Unable to perform the action because the virtual machine is busy. The virtual machine is being cloned. Please try again later.

% vagrant version
Installed Version: 2.2.9
Latest Version: 2.2.9

% vagrant plugin list
vagrant-parallels (2.0.1, global)

Parallels 15.1.4 (47270)

[cecilphillip]

I'm get this error too. Using the same versions as @max-arnold
cc @legal90

[max-arnold]

@tradel @cecilphillip I just upgraded to 2.1.0 and it looks like the issue was fixed in #370