Libguestfs - Feb 2013 - virt-v2v fails 'iface' parameter is not supported by the libvirt attach-method

So I am getting this error on Fed18 virt-v2v trying to convert libvirtxml
to Rhev 3.1 NFS Export domain:

'iface' parameter is not supported by the libvirt attach-method at
/usr/share/perl5/vendor_perl/Sys/VirtConvert/GuestfsHandle.pm line 96.

Which is mentioned in this bug:

https://bugzilla.redhat.com/show_bug.cgi?id=895898

and this one:

https://bugzilla.redhat.com/show_bug.cgi?id=892272

Is there a work-around way for me to manipulate my xml to get it to
convert?  Or am I not hitting a bug at all and just have the wrong hardware
specified somewhere?

<domain type='kvm'>
  <name>XP</name>
  <uuid>46683b8c-6638-9eed-b1a4-7b72c2080c9f</uuid>
  <memory unit='KiB'>2097152</memory>
  <currentMemory unit='KiB'>2097152</currentMemory>
  <vcpu placement='static'>1</vcpu>
  <os>
    <type arch='i686' machine='pc-1.2'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset='localtime'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/500gig/xp.raw'/>
      <target dev='hda' bus='ide'/>
      <address type='drive' controller='0' bus='0'
target='0' unit='0'/>
    </disk>
    <controller type='usb' index='0'>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x01'
function='0x2'/>
    </controller>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x01'
function='0x1'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x04'
function='0x0'/>
    </controller>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <channel type='spicevmc'>
      <target type='virtio' name='com.redhat.spice.0'/>
      <address type='virtio-serial' controller='0'
bus='0' port='1'/>
    </channel>
    <input type='tablet' bus='usb'/>
    <input type='mouse' bus='ps2'/>
    <graphics type='spice' autoport='yes'/>
    <sound model='ich6'>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x03'
function='0x0'/>
    </sound>
    <video>
      <model type='qxl' vram='65536' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x02'
function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x05'
function='0x0'/>
    </memballoon>
  </devices>
</domain>

Thanks!

-- 
Chris Noffsinger
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On Fri, Feb 08, 2013 at 10:47:58AM -0500, Chris Noffsinger
wrote:
> So I am getting this error on Fed18 virt-v2v trying to convert libvirtxml
> to Rhev 3.1 NFS Export domain:
> 
> 'iface' parameter is not supported by the libvirt attach-method at
> /usr/share/perl5/vendor_perl/Sys/VirtConvert/GuestfsHandle.pm line 96.
> 
> Which is mentioned in this bug:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=895898
> 
> and this one:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=892272
Yup, this is a missing feature in libguestfs when using the libvirt
backend (instead of the default which is to run qemu directly).  In
Fedora 18, we're using the non-default libvirt backend, so
consequently this missing feature breaks virt-v2v.
> Is there a work-around way for me to manipulate my xml to get it to
> convert?  Or am I not hitting a bug at all and just have the wrong hardware
> specified somewhere?
The simplest workaround is to switch back to the default backend.  Do:

  export LIBGUESTFS_ATTACH_METHOD=appliance

before running virt-v2v.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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build Windows installers. Over 100 libraries supported.
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