yahoo-eng-team team mailing list archive

["Markus Zoeller \(markus_z\)" <mzoeller@xxxxxxxxxx>]

This wishlist bug has been open a year without any activity. I'm going
to move it to "Opinion / Wishlist", which is an easily-obtainable queue
of older requests that have come on. This bug can be reopened (set back
to "New") if someone decides to work on this.


** Changed in: nova
       Status: Confirmed => Opinion

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https://bugs.launchpad.net/bugs/1183885

Title:
  pxe boot a guest in nova is not possible anymore

Status in OpenStack Compute (nova):
  Opinion

Bug description:
  Hi guys,

      libvirt.xml.template support has been removed between diablo and
  folsom (I guess) but we still need a way of PXE booting a guest OS in
  some situation.  All the forums I've read point us to modifying
  libvirt.xml.template but that's not deprecated.

  This patch permits the configuration of PXE boots in a hackish way:

   --- /usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py.orig 2013-05-10 16:25:17.787862177 +0000
   +++ /usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py 2013-05-10 16:26:39.442022870 +0000
   @@ -87,6 +87,9 @@
   LOG = logging.getLogger(name)

   
  libvirtopts = [
   + cfg.StrOpt('defaultguestbootdev',
   + default='hd',
   + help='Sets the default guest boot device'),
        cfg.StrOpt('rescueimageid',
                   default=None,
                   help='Rescue ami image'),
   @@ -1792,7 +1795,7 @@
                                                       instance['name'],
                                                       "ramdisk")
                else:
   - guest.osbootdev = "hd"
   + guest.osbootdev = CONF.defaultguestboot_dev

   
       if CONF.libvirt_type != "lxc" and CONF.libvirt_type != "uml":
            guest.acpi = True

  This may not be the best way as I would prefer to have two boot
  devices in order to try "network" boot and then "hd" boot if the first
  one failed.   This is not a bug but we lost a possibility when
  libvirt.xml.template usage was deprecated and some people will find it
  hard to get it working easily.

  Thank you very much,

  Dave

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