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



On Tue, Jul 21, 2009 at 10:45 AM, Jun Koi<junkoi2004 gmail com> wrote:
> On Mon, Jul 20, 2009 at 1:19 AM, Cole Robinson<crobinso redhat com> wrote:
>> (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 redhat com> wrote:
>>>> Jun Koi wrote:
>>>>> On Fri, Jul 17, 2009 at 10:42 PM, Cole Robinson<crobinso 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.
>
> It prints out: <module 'virtinst' from 'virtinst/__init__.py'>""
>
> I checked again, and see that virt-install was installed into
> /usr/local/bin, which might not be the right place? It should be in
> /usr/bin, right? So how to install virt-install there?
>
> If that matters, I install virt-install by running "python setup.py
> install". I am on Ubuntu 904, and I heard that Python 2.6.2 on this
> distro has some problems with installation, so that they always put
> code into /usr/local/ (??)

I tried to install virt-install again, with command:

python setup.py install --prefix=/usr

Then I run "virt-install" again (without option). This time I got the
below error:

Traceback (most recent call last):
  File "/usr/bin/virt-install", line 36, in <module>
    from virtinst.VirtualCharDevice import VirtualCharDevice
ImportError: No module named VirtualCharDevice


So it is still the same problem as before. Do you have any hint?

My impression is that so far, libvirt stuff is not well supported in
Ubuntu, but only in Fedora Core.

Thanks,
J


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