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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: nova
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1253626

Title:
  Cannot launch whole disk image with xen+libvirt

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  Hi.

  I am unable to launch an instance with a whole-disk image (that is, a
  file containing a full disk with partitions).

  The generated XML file for libvirt contains the following:

        <os>
          <type>xen</type>
          <root>/dev/xvda</root>
          <boot dev="hd"/>
        </os>

  So when the machine starts it fails since the above is passed as a
  cmdline "root=/dev/xvda" being passed to the kernel that pygrub is
  launching, resulting in the following error during boot:

      mount: mounting /dev/xvda on /root failed: Invalid argument
      mount: mounting /dev on /root/dev failed: No such file or directory
      mount: mounting /sys on /root/sys failed: No such file or directory
      mount: mounting /proc on /root/proc failed: No such file or directory
      Target filesystem doesn't have requested /sbin/init.
      No init found. Try passing init= bootarg.

  Removing that line from the libivrt XML solves this issue.

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