Open Stack

Hi, I'd like you to take a look at this patch for potential
documentation impact.
https://review.openstack.org/10908

Log:
commit 8f7dda54874c0f5fea09c8797b2e90284115cc08
Author: Vishvananda Ishaya <vishvananda at gmail.com>
Date:   Mon Aug 6 12:17:43 2012 -0700

    Allow nova to guess device if not passed to attach
    
    partial fix for bug 1004328
    
    Only the xen hypervisor actually respects the device name that
    is passed in attach_volume. For other hypervisors it makes much
    more sense to automatically generate a unique name.
    
    This patch generates a non-conflicting device name if one is not
    passed to attach_volume. It also validates the passed in volume
    name to make sure another device isn't already attached there.
    
    A corresponding change to novaclient and horizon will greatly
    improve the user experience of attaching a volume.
    
    It moves some common code out of metadata/base so that it can
    be used to get a list of block devices. The code was functionally
    tested as well and block device name generation works properly.
    
    This adds a new method to the rpcapi to validate a device name. It
    also adds server_id to the volumes extension, since it was omitted
    by mistake.
    
    The next step is to modify the libvirt driver to match the serial
    number of the volume to the device name so that the volume can
    always be found at /dev/disk/by-id/virtio-vdc.
    
    DocImpact
    
    Change-Id: I0b9454fc50a5c93b4aea38545dcee98f68d7e511