[chef] How do I modify a local variable through ruby_block?

[Daniel K < >]

Hello all,

I am having hard time with a variable modification. See the snippet below:
subdir = ""
ruby_block "read target archive directory name" do
  block do
    Dir.foreach("/snapshot/#{dbSnapshotId}") do |f| 
      unless(f.to_s.eql? ".")
        unless (f.to_s.eql? "..")
          Chef::Log.info("Timestamp: " + f.to_s)
          subdir = f.to_s
          node[:RestoreSubdir] = subdir
          node.save
        end
      end
    end
  end
  action :create
end

After the ruby_block, subdir is still an empty string. However, Chef::Log 
shows
a value otherwise. I also tried these other method in order to get this String
outside the ruby_block scope:
1. script resource => variable modification undone once out of scope
2. ruby_block resource => variable modification undone once out of scope
3. separate recipe with ruby code => ruby code still runs 1st before mounting
the drive
4. separate recipe with ruby_block/script => still cannot see the variable
modification once out of scope
5. node.save within ruby_block => save doesn't occur until chef-client is done
running all the resources
6. databag.save within ruby_block => save doesn't occur until chef-client is
done running all the resources


Any suggestion?




Regard,


Daniel K.