[virt-tools-list] Re: [libvirt] Create a new VM from an existent image?

Cole Robinson crobinso at redhat.com
Sun Jul 19 16:19:45 UTC 2009


(taking to virt-tools-list, this isn't relevant to libvirt)

Jun Koi wrote:
> On Sun, Jul 19, 2009 at 1:59 AM, Cole Robinson<crobinso at redhat.com> wrote:
>> Jun Koi wrote:
>>> On Fri, Jul 17, 2009 at 10:42 PM, Cole Robinson<crobinso at redhat.com> wrote:
>>>> Jun Koi wrote:
>>>>> Hi,
>>>>>
>>>>> To use libvirt, I am strying to use virt-install to create a new VM
>>>>> from an existent (KVM) VM image. I did the following steps:
>>>>>
>>>>> 1) run libvirtd with "libvirtd -d" (I use the latest libvirt git tree)
>>>>>
>>>>> 2) Run virt-install (0.400.3) with my existent image in img/img.winxp
>>>>>
>>>>> # virt-install --import -n winxp -f img/img.xp3 --vnc --hvm
>>>>> --accelerate --ram 800
>>>>>
>>>> That looks fine.
>>>>
>>>>> However, this step returns error like:
>>>>>
>>>>> "ERROR    Could not find usable default libvirt connection."
>>>>>
>>>> If 'virsh --connect qemu:///system' doesn't work, you probably didn't
>>>> configure your libvirt install correctly.
>>>>
>>> But it works! So the problem stays elsewhere.
>>>
>>> Do you have any suggestion?
>>>
>> Hmm, then you probably need this patch to virtinst, since our URI detection
>> likely isn't as thorough as libvirt:
>>
>> http://hg.et.redhat.com/cgi-bin/hg-virt.cgi/applications/virtinst--devel/rev/030fbc6df74f
>>
> 
> I got the latest code from hg tree, and installed that.  But running
> "virt-install" (without option) returns the error message:
> 
> Traceback (most recent call last):
>   File "/usr/local/bin/virt-install", line 36, in <module>
>     from virtinst.VirtualCharDevice import VirtualCharDevice
> ImportError: No module named VirtualCharDevice
> 
> 
> 
> How to fix this problem?
> 

There must be an install issue, you shouldn't have this issue. My guess is
/usr/local/bin/virt-install isn't looking at the newly installed virtinst libs.

What command did you use to install? What distro are you on? What does:

python -c 'import virtinst; print virtinst'

show? It should list the path to the newly installed virtinst, the one via
your distro.

- Cole




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