[libvirt] Two issues regarding TFTP support in virtual networks...

Darryl L. Pierce dpierce at redhat.com
Mon Jan 11 14:33:51 UTC 2010

On Thu, Dec 17, 2009 at 09:35:55AM -0500, Darryl L. Pierce wrote:
> The first is just a wiki fix: the wiki says this functionality is
> available as of 0.7.1 of libvirt. The code though is only in the 0.7.2
> tag and later. So the wiki should say 0.7.2 instead.
> The second regards how I'm using it and what I'm doing wrong. I'm
> creating a virtual network and pointing it to a temporary directory
> where I've run livecd-iso-to-pxeboot to setup an ISO file for PXE
> booting. So the network XML looks like this:
> (mcpierce at mcpierce-desktop:node-image)$ sudo virsh net-dumpxml testbr541
> <network>
>   <name>testbr541</name>
>   <uuid>f389317f-8420-7516-df9d-756b7deb3d37</uuid>
>   <forward mode='nat'/>
>   <bridge name='testbr541' stp='on' delay='0' />
>   <ip address='' netmask=''>
>     <tftp root='/tmp/tmp.3B8opJfBXw/tftpboot/' />
>     <dhcp>
>       <range start='' end='' />
>     </dhcp>
>   </ip>
> </network>
> When I start up the VM, I see it get an IP address within the range
> specified, but it never pxeboots the ISO image.
> To what directory should the root attribute be pointed?

If someone has a moment, could you please take a look and help me with
this situation? I've tried several scenarios and nothing seems to work
for pointing libvirt to the directory I've created.

Darryl L. Pierce, Sr. Software Engineer @ Red Hat, Inc.
Delivering value year after year.
Red Hat ranks #1 in value among software vendors.

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