Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I want to create guest os(Ubuntu11.10) on host(Ubuntu11.10) with "ubuntu-vm-builder" command. some error is occured

do you know how to diagnose to this case ? please Give me a piece of advice. My log is following

I worked with following article:

share|improve this question

migrated from Mar 20 '12 at 6:18

This question came from our site for system and network administrators.

I was building a 10.04 image on a 11.04 server and had to do the following to get it to work:

  1. Edit VMBuilder's (even if you're not building dapper). Mine was located at /usr/lib/python2.7/dist-packages/VMBuilder/plugins/ubuntu/

  2. Search for "def unmount_dev(self):" and add the two 'sleep' and 'chroot' commands to match the following:

    def unmount_dev(self):
        run_cmd('sleep', '10')
        run_cmd('chroot', '%s' % self.context.chroot_dir, '/etc/init.d/cron','stop')
        run_cmd('umount', '%s/dev' % self.context.chroot_dir)

See for more info.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.