[virt-tools-list] Provision through virt-manager not supported on para-virtualized Xen?

Thu Feb 2 14:01:38 UTC 2012

On 02/02/2012 08:54 AM, Cheer Xiao wrote:
> 2012/2/2 Cole Robinson <crobinso at redhat.com>:
>> On 02/02/2012 08:05 AM, Cheer Xiao wrote:
>>> Hi all,
>>>
>>> I was setting up libvirt and virt-manager for managing Xen VMs. But
>>> when I hit "New" in virt-manager to provision a new VM, virt-manager
>>> gives me the error: "No install options available for this
>>> connection."
>>>
>>> The hypervisor being used is para-virtualized Xen, running on Debian Squeeze.
>>>
>>> lux-002# xm info
>>> host Â  Â  Â  Â  Â  Â  Â  Â  Â  : lux-002
>>> release Â  Â  Â  Â  Â  Â  Â  Â : 2.6.32-5-xen-686
>>> version Â  Â  Â  Â  Â  Â  Â  Â : #1 SMP Mon Jan 16 19:46:09 UTC 2012
>>> machine Â  Â  Â  Â  Â  Â  Â  Â : i686
>>> nr_cpus Â  Â  Â  Â  Â  Â  Â  Â : 4
>>> nr_nodes Â  Â  Â  Â  Â  Â  Â  : 1
>>> cores_per_socket Â  Â  Â  : 1
>>> threads_per_core Â  Â  Â  : 2
>>> cpu_mhz Â  Â  Â  Â  Â  Â  Â  Â : 3200
>>> hw_caps Â  Â  Â  Â  Â  Â  Â  Â :
>>> bfebfbff:20100000:00000000:00000180:0000641d:00000000:00000001:00000000
>>> virt_caps Â  Â  Â  Â  Â  Â  Â :
>>> total_memory Â  Â  Â  Â  Â  : 8191
>>> free_memory Â  Â  Â  Â  Â  Â : 1150
>>> node_to_cpu Â  Â  Â  Â  Â  Â : node0:0-3
>>> node_to_memory Â  Â  Â  Â  : node0:1150
>>> node_to_dma32_mem Â  Â  Â : node0:578
>>> max_node_id Â  Â  Â  Â  Â  Â : 0
>>> xen_major Â  Â  Â  Â  Â  Â  Â : 4
>>> xen_minor Â  Â  Â  Â  Â  Â  Â : 0
>>> xen_extra Â  Â  Â  Â  Â  Â  Â : .1
>>> xen_caps Â  Â  Â  Â  Â  Â  Â  : xen-3.0-x86_32p
>>> xen_scheduler Â  Â  Â  Â  Â : credit
>>> xen_pagesize Â  Â  Â  Â  Â  : 4096
>>> platform_params Â  Â  Â  Â : virt_start=0xf5800000
>>> xen_changeset Â  Â  Â  Â  Â : unavailable
>>> xen_commandline Â  Â  Â  Â : placeholder com1=9600,8n1 console=com1,vga
>>> cc_compiler Â  Â  Â  Â  Â  Â : gcc version 4.4.5 (Debian 4.4.5-8)
>>> cc_compile_by Â  Â  Â  Â  Â : waldi
>>> cc_compile_domain Â  Â  Â : debian.org
>>> cc_compile_date Â  Â  Â  Â : Mon Nov Â 7 09:18:26 CET 2011
>>> xend_config_format Â  Â  : 4
>>> lux-002# libvirtd --version
>>> libvirtd (libvirt) 0.8.3
>>>
>>
>> libvirt pokes into the host machine to try and figure out it's virt
>> capabilities. So something must be going wrong there. Here's the function it
>> uses in libvirt code:
>>
>> http://libvirt.org/git/?p=libvirt.git;a=blob;f=src/xen/xen_hypervisor.c;h=b5b2328c22ccffb17f7710b3ed6064907d744215;hb=HEAD#l2563
>>
>> Something must be funky or unexpected with /sys/hypervisor/properties/capabilities
>>
> 
> This is how it looks:
> 
> lux-002% cat /sys/hypervisor/properties/capabilities
> xen-3.0-x86_32p
> 
> So, is provision through on para-virtualized Xen *supposed* to be
> supported or not?
> 

That is saying your host supports 32bit paravirt guests only.

What's the output of 'virsh --connect xen:/// capabilities' ?

- Cole