libvirt and bhyve problems

[Roman Bogorodskiy]

  Craig Rodrigues wrote:

> On Wed, Jun 11, 2014 at 12:25 PM, Roman Bogorodskiy <novel at freebsd.org> wrote:
> > I've attached a patch which should fix the segfault. Could you please
> > let me know if it fixes the problem?
> 
> I have incorporated your patch into the libvirt port, and provided a tarball
> of the port here:
> 
> http://people.freebsd.org/~rodrigc/libvirt_port.tgz
> 
> I can confirm that your patch eliminates the coredump for me.
> 
> So now I can do the following:
> 
> (1)  Start libvirtd:
>                 /usr/local/sbin/libvirtd
> 
> (2)  Start virsh:
>                 virsh -c "bhyve:///system"
> 
> (3)  Execute following inside virsh:
>            define bhyve.xml
>            start bhyve
> 
>            ( using bhyve.xml file from
> http://lists.freebsd.org/pipermail/freebsd-virtualization/2014-June/002588.html
> )
> 
> In the libvirtd console, I see this:
> 
> 2014-06-11 22:47:16.357+0000: 34485605376: info : libvirt version: 1.2.5
> 2014-06-11 22:47:16.357+0000: 34485605376: error : virExec:417 :
> Cannot find 'pm-is-supported' in path: No such file or directory
> 2014-06-11 22:47:16.357+0000: 34485605376: warning :
> virQEMUCapsInit:948 : Failed to get host power management capabilities
> 2014-06-11 22:47:21.050+0000: 34485605376: info :
> virDomainObjListLoadAllConfigs:18249 : Scanning for configs in
> /usr/local/var/run/libvirt/qemu
> 2014-06-11 22:47:21.063+0000: 34485605376: info :
> virDomainObjListLoadAllConfigs:18249 : Scanning for configs in
> /usr/local/etc/libvirt/qemu
> 2014-06-11 22:47:21.168+0000: 34485605376: info :
> virDomainObjListLoadAllConfigs:18249 : Scanning for configs in
> /usr/local/etc/libvirt/bhyve
> 2014-06-11 22:47:21.168+0000: 34485605376: info :
> virDomainObjListLoadAllConfigs:18273 : Loading config file 'bhyve.xml'
> 2014-06-11 22:47:43.469+0000: 34485598208: error :
> virNetDevBridgeAddPort:399 : Unable to add bridge tap0 port vnet18:
> Invalid argument
> 2014-06-11 22:47:43.573+0000: 34485598208: error : virCommandWait:2426
> : internal error: Child process (/usr/sbin/bhyvectl --destroy
> --vm=bhyve) unexpected exit status 255
> 
> 
> 
> For the last line, it looks like it is trying to do bhyvectl --destroy
> --vm=bhyve
> on a VM which doesn't exist, i.e. there is no entry in /dev/vmm/bhyve
> 
> It should ignore the error at this point and try to spawn the VM, but it fails.

This actually happens because it fails to spawn a VM (because there's no
bridge) and tries to make sure to unload previously loaded VM in order
not to leave it in a stale state.

I have adjusted the port:

http://people.freebsd.org/~novel/misc/libvirt_port_updated.tgz

With this setup, I'm able to get networking (e.g. virsh net-list works)
and updated the fix for the previous problem. I was able to start a VM
with that setup.

Roman Bogorodskiy
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