The path of storage containers taken from lxc-config, instead of using a constant for lxc>=1.0.0.

* for lxc to 1.0.0 using constant Vagrant::LXC::Driver::DEFAULT_CONTAINERS_PATH
 * change method Vagrant::LXC::Driver::CLI#version to call lxc-create if lxc-version command not exists (to lxc version 1.0.0)

lib/vagrant-lxc/driver.rb

@@ -13,8 +13,8 @@ module Vagrant
       # a name.
       class ContainerNotFound < StandardError; end
 
-      # Root folder where container configs are stored
+      # Default root folder where container configs are stored
-      CONTAINERS_PATH = '/var/lib/lxc'
+      DEFAULT_CONTAINERS_PATH = '/var/lib/lxc'
 
       attr_reader :container_name,
                   :customizations
@@ -31,12 +31,17 @@ module Vagrant
         raise ContainerNotFound if @container_name && ! @cli.list.include?(@container_name)
       end
 
+      # Root folder where container configs are stored
+      def containers_path
+        @containers_path ||= @cli.support_config_command? ? @cli.config('lxc.lxcpath') : DEFAULT_CONTAINERS_PATH
+      end
+
       def all_containers
         @cli.list
       end
 
       def base_path
-        Pathname.new("#{CONTAINERS_PATH}/#{@container_name}")
+        Pathname.new("#{containers_path}/#{@container_name}")
       end
 
       def rootfs_path

lib/vagrant-lxc/driver/cli.rb

@@ -28,14 +28,24 @@ module Vagrant
         end
 
         def version
-          if run(:version) =~ /lxc version:\s+(.+)\s*$/
+          return @version if @version
-            $1.downcase
+          @version = support_version_command? ? run(:version) : run(:create, '--version')
+          if @version =~ /(lxc version:\s+|)(.+)\s*$/
+            @version = $2.downcase
           else
             # TODO: Raise an user friendly error
             raise 'Unable to parse lxc version!'
           end
         end
 
+        def config(param)
+          if support_config_command?
+            run(:config, param).gsub("\n", '')
+          else
+            raise Errors::CommandNotSupported, name: 'config', available_version: '> 1.x.x', version: version
+          end
+        end
+
         def state
           if @name && run(:info, '--name', @name, retryable: true) =~ /^state:[^A-Z]+([A-Z]+)$/i
             $1.downcase.to_sym
@@ -134,6 +144,17 @@ module Vagrant
           return @supports_attach
         end
 
+        def support_config_command?
+          version[0].to_i >= 1
+        end
+
+        def support_version_command?
+          @sudo_wrapper.run('which', 'lxc-version')
+          return true
+        rescue Vagrant::LXC::Errors::ExecuteError
+          return false
+        end
+
         private
 
         def run(command, *args)

lib/vagrant-lxc/errors.rb

@@ -26,6 +26,10 @@ module Vagrant
         error_key(:lxc_container_already_exists)
       end
 
+      class CommandNotSupported < Vagrant::Errors::VagrantError
+        error_key(:lxc_command_not_supported)
+      end
+
       # Box related errors
       class TemplateFileMissing < Vagrant::Errors::VagrantError
         error_key(:lxc_template_file_missing)

locales/en.yml

@@ -66,3 +66,7 @@ en:
         There is container on your system with the same name you've specified
         on your Vagrantfile (%{name}), please choose a different one or
         run `lxc-destroy --name %{name}` and try again.
+
+      lxc_command_not_supported: |-
+        Command (lxc-%{command}) not supported in version %{version}.
+        This command is available with version %{available_version}.

spec/unit/driver/cli_spec.rb

@@ -29,14 +29,52 @@ describe Vagrant::LXC::Driver::CLI do
   end
 
   describe 'version' do
-    let(:lxc_version_out) { "lxc version:  0.x.y-rc1\n" }
-
     before do
       allow(subject).to receive(:run).with(:version).and_return(lxc_version_out)
     end
 
-    it 'parses the version from the output' do
+    describe 'lxc version before 1.x.x' do
-      expect(subject.version).to eq('0.x.y-rc1')
+      let(:lxc_version_out) { "lxc version:  0.x.y-rc1\n" }
+
+      it 'parses the version from the output' do
+        expect(subject.version).to eq('0.x.y-rc1')
+      end
+    end
+
+    describe 'lxc version after 1.x.x' do
+      let(:lxc_version_out) { "1.0.0\n" }
+
+      it 'parses the version from the output' do
+        expect(subject.version).to eq('1.0.0')
+      end
+    end
+  end
+
+  describe 'config' do
+    before do
+      allow(subject).to receive(:run).with(:config, 'lxc.lxcpath').and_return(lxc_config_out)
+      allow(subject).to receive(:run).with(:version).and_return(lxc_version_out)
+      allow(subject).to receive(:run).with(:create, '--version').and_return(lxc_version_out)
+    end
+
+    describe 'lxc version before 1.x.x' do
+      let(:support_version_command?) { true }
+      let(:lxc_config_out)           { "/var/lib/lxc\n" }
+      let(:lxc_version_out)          { "lxc version:  0.x.y-rc1\n" }
+
+      it 'not supported' do
+        expect{subject.config('lxc.lxcpath')}.to raise_error(Vagrant::LXC::Errors::CommandNotSupported)
+      end
+    end
+
+    describe 'lxc version before after 1.x.x'do
+      let(:support_version_command?) { false }
+      let(:lxc_config_out)           { "/var/lib/lxc\n" }
+      let(:lxc_version_out)          { "1.0.0\n" }
+
+      it 'parser the lxc.lxcpath value' do
+        expect(subject.config('lxc.lxcpath')).not_to end_with("\n")
+      end
     end
   end
 

spec/unit/driver_spec.rb

@@ -89,7 +89,7 @@ describe Vagrant::LXC::Driver do
   describe 'start' do
     let(:customizations)         { [['a', '1'], ['b', '2']] }
     let(:internal_customization) { ['internal', 'customization'] }
-    let(:cli)                    { double(Vagrant::LXC::Driver::CLI, start: true) }
+    let(:cli)                    { double(Vagrant::LXC::Driver::CLI, start: true, support_config_command?: false) }
     let(:sudo)                   { double(Vagrant::LXC::SudoWrapper) }
 
     subject { described_class.new('name', sudo, cli) }
@@ -99,6 +99,7 @@ describe Vagrant::LXC::Driver do
         and_return('# CONFIGURATION')
       sudo.should_receive(:run).twice.with('cp', '-f', %r{/tmp/.*}, '/var/lib/lxc/name/config')
       sudo.should_receive(:run).twice.with('chown', 'root:root', '/var/lib/lxc/name/config')
+
       subject.customizations << internal_customization
       subject.start(customizations)
     end
@@ -150,6 +151,30 @@ describe Vagrant::LXC::Driver do
     end
   end
 
+  describe 'containers_path' do
+    let(:cli) { double(Vagrant::LXC::Driver::CLI, config: cli_config_value, support_config_command?: cli_support_config_command_value) }
+
+    subject { described_class.new('name', nil, cli) }
+
+    describe 'lxc version before 1.x.x' do
+      let(:cli_support_config_command_value) { false }
+      let(:cli_config_value)                 { '/var/lib/lxc' }
+
+      it 'delegates to cli' do
+        expect(subject.containers_path).to eq(cli_config_value)
+      end
+    end
+
+    describe 'lxc version after 1.x.x' do
+      let(:cli_support_config_command_value) { true }
+      let(:cli_config_value)                 { '/etc/lxc' }
+
+      it 'delegates to cli' do
+        expect(subject.containers_path).to eq(cli_config_value)
+      end
+    end
+  end
+
   describe 'folder sharing' do
     let(:shared_folder)       { {guestpath: '/vagrant', hostpath: '/path/to/host/dir'} }
     let(:ro_rw_folder)        { {guestpath: '/vagrant/ro_rw', hostpath: '/path/to/host/dir', mount_options: ['ro', 'rw']} }