[Libvir] Re: Virtualization things.

[Richard W.M. Jones]

[Moved to libvir-list.  The original thread was on fedora-devel-list, 
starting here:
https://www.redhat.com/archives/fedora-devel-list/2007-July/thread.html#00504]

Till Maas wrote:
> On Di Juli 10 2007, Richard W.M. Jones wrote:
>> Till Maas wrote:
>>> The idea is imho great, but for me with qemu it does not work properly.
>> I'd really like to help out here.  Did you get any error messages?
> 
> The first problem is, that it seems to be a tool to create persisten virtual 
> machines, e.g. virtual servers, but most of the time I only want to boot a 
> live cd, e.g. a Fedora one. But virt-manager seems to demand an virtual HD 
> drive. I only tested it twice or so, but it looked not promising.

The next version of virt-install will support this explicitly.  I am 
reliably assured that it should work in qemu & Xen.

Support is not there yet in virt-manager.

> What I did so far was creating a new machine with a Fedora Live CD Image and 
> booted it. When I hit the Pause button, it appeared to be pressed, but 
> nothing happened. The machine still responded and the following error 
> appeared on the commandline, where I started virt-manager:
> 
> -------------
> libvir: QEMU error : operation failed: suspend operation failed
> Traceback (most recent call last):
>   File "/usr/share/virt-manager/virtManager/console.py", line 389, in 
> control_vm_pause
>     self.vm.suspend()
>   File "/usr/share/virt-manager/virtManager/domain.py", line 365, in suspend
>     self.vm.suspend()
>   File "/usr/lib/python2.5/site-packages/libvirt.py", line 350, in suspend
>     if ret == -1: raise libvirtError ('virDomainSuspend() failed', dom=self)
> libvirt.libvirtError: virDomainSuspend() failed operation failed: suspend 
> operation failed
> --------------

This is a bug.  Do you know what version of libvirt & virt-manager this 
happens with?  Suspend _ought_ to work with QEMU with libvirt >= 0.2.0.

> Then when I shut down the machine and clicked on "run", it did not boot the 
> ISO Image I selected while creating the machine, but only complained that it 
> could not boot from HD (which is true, because I did not install anything to 
> the HD)
> 
> Then I wanted to delete the machine, but the "Delete" button was still greyed 
> out, even when I shut it down (Imho it should be available all the time and 
> provide a warning that the machine needs to be shut down before it can be 
> deleted). When I closed virt-manager and opened it again, then I was able to 
> delete the machine.
> 
> But I cannot find a way to add an iso image to the machine or make it boot the 
> iso image I selected at creation time.

I haven't played with live CDs & virt-manager at all, but I'll have a 
go.  What live CD were you trying?

> Also the network selection seems not to work, when I want to add a network 
> interface, I can choose between virtual and shared device, but both only have 
> an empty list, where I have to select something to be able to click 
> on "Forward".

This is another bug.  If you get me the version of virt-manager, I'll 
look into it.

> I guess you cannot help here very much, because it seems to me that 
> virt-manager just needs a lot of coding, to become as userfriendly as 
> VirtualBox is.

Rich.

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