[Users] Cannot create build slave

[Ian Hinder]

On 20 Oct 2014, at 19:19, Erik Schnetter <schnetter at cct.lsu.edu> wrote:

> I don't know. I'm using Ian's script. to create the slave. Ian?

Hi Erik,

We discussed this before, the last time you tried this.  I include my reply from then:

> Hi Erik,
> 
> Did you do a full reinstall rather than an upgrade?  The VM definition should have survived an upgrade.
> 
> The create-build-slave-vm script has never been tested on 14.04, and it looks like libvirt now only supports the more sophisticated "storage pool" method when using non-raw disk formats.  The long-term solution would be to switch to using storage pools; there is a "local directory" pool type, and it is probably a small change, but I don't have a 14.04 machine to test on currently, nor the time.  I think the easiest solution would be to use a raw disk image instead of a qcow2 image, which the error message suggests should still work.  Since you don't need to back up this VM, there aren't so many advantages to qcow2 anyway.  I think you should be able to do this by modifying the relevant part of the create-build-slave-vm script from
> 
> 	--disk path=$vmdir/root.qcow2,format=qcow2,bus=virtio,size=50
> 
> to
> 
> 	--disk path=$vmdir/root.img,bus=virtio,size=50
> 
> The only change should be that the image will now take 50 GB of real disk space, rather than only taking that space when it is actually used.  
> 


Can you try this change to the script?

-- 
Ian Hinder
http://numrel.aei.mpg.de/people/hinder