Adding support for --parallel into VirtualBox provider

[Tero Saarni]

I'm studying what capabilities are missing from VirtualBox provider to make `vagrant up --parallel` work.  Just as a simple test, adding `parallel: true` into virtualbox/plugin.rb kind of works on Linux.  

I assume there must be many changes that are needed beyond that.  Can someone give an overview what are the missing parts to enable --parallel support for VirtualBox provider?

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Tero

[Umair Chagani]

I think the quickest test for this is to open up two terminal sessions and vagrant up both of them. I remember reading a guy trying this and VB throwing up.

VirtualBox also has a huge problem with user sessions which needs to be solved.

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[Tero Saarni]

On Sunday, November 16, 2014 7:34:00 PM UTC+2, Umair Chagani wrote:

I think the quickest test for this is to open up two terminal sessions and vagrant up both of them. I remember reading a guy trying this and VB throwing up.

VirtualBox also has a huge problem with user sessions which needs to be solved.

 

I already tested this before just by adding 'parallel: true' into the provider function call in virtualbox/plugin.rb file in Vagrant code.  That seemed to activate parallel support and I have not seen any big problems, besides progress printouts being a bit misleading when starting two VMs at once.  But since VirtualBox provider is not registered with 'parallel: true' by default I assume I'm not seeing the whole picture.  

I wonder if anyone got more insight into this?

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Tero

[Simon Gooch]

Hi,

Has there been any progress on this, as I'm also interested in getting this to work.

Many thanks

[Jeff Welling]

I think this is worth revisiting.

I used to be able to reproduce this problem a number of years and several versions of VirtualBox ago, but with Vagrant 2.2.4 and Version 6.0.12 r133076, and monkeypatching a "parallel: true"

into this line https://github.com/hashicorp/vagrant/blob/master/plugins/providers/virtualbox/plugin.rb#L12 and the following Vagrantfile with repeated test over the course of an hour on Mac OS 10.15, I'm no longer able to reproduce the session problems with VirtualBox.

Vagrant.configure("2") do |config|
  (1..10).each do |i|
    config.vm.provider "virtualbox" do |v|
      v.linked_clone = true
    end
    config.vm.define "test-#{i}" do |node|
      node.vm.box = "debian/jessie64"
    end
  end
end

Is anyone able to reproduce the session problem? Because if not, I would argue it's time to update the provider :D

I'm not aware of the problem being OS specific, but I do recall that my previous tests were run when Debian or Ubuntu were my desktop of choice.

Thank you to everyone who's work continues to make Vagrant an awesome tool to use!

Jeff.