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



2012/2/2 Cole Robinson <crobinso redhat com>:
> On 02/02/2012 08:54 AM, Cheer Xiao wrote:
>> 2012/2/2 Cole Robinson <crobinso 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  : lux-002
>>>> release   Â  Â  Â  Â  Â  Â  Â : 2.6.32-5-xen-686
>>>> version   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 : i686
>>>> nr_cpus   Â  Â  Â  Â  Â  Â  Â : 4
>>>> nr_nodes   Â  Â  Â  Â  Â  Â  : 1
>>>> cores_per_socket   Â  Â  : 1
>>>> threads_per_core   Â  Â  : 2
>>>> cpu_mhz   Â  Â  Â  Â  Â  Â  Â : 3200
>>>> hw_caps   Â  Â  Â  Â  Â  Â  Â :
>>>> bfebfbff:20100000:00000000:00000180:0000641d:00000000:00000001:00000000
>>>> virt_caps   Â  Â  Â  Â  Â  Â :
>>>> total_memory   Â  Â  Â  Â  : 8191
>>>> free_memory   Â  Â  Â  Â  Â : 1150
>>>> node_to_cpu   Â  Â  Â  Â  Â : node0:0-3
>>>> node_to_memory   Â  Â  Â  : node0:1150
>>>> node_to_dma32_mem   Â  Â : node0:578
>>>> max_node_id   Â  Â  Â  Â  Â : 0
>>>> xen_major   Â  Â  Â  Â  Â  Â : 4
>>>> xen_minor   Â  Â  Â  Â  Â  Â : 0
>>>> xen_extra   Â  Â  Â  Â  Â  Â : .1
>>>> xen_caps   Â  Â  Â  Â  Â  Â  : xen-3.0-x86_32p
>>>> xen_scheduler   Â  Â  Â  Â : credit
>>>> xen_pagesize   Â  Â  Â  Â  : 4096
>>>> platform_params   Â  Â  Â : virt_start=0xf5800000
>>>> xen_changeset   Â  Â  Â  Â : unavailable
>>>> xen_commandline   Â  Â  Â : placeholder com1=9600,8n1 console=com1,vga
>>>> cc_compiler   Â  Â  Â  Â  Â : gcc version 4.4.5 (Debian 4.4.5-8)
>>>> cc_compile_by   Â  Â  Â  Â : waldi
>>>> cc_compile_domain   Â  Â : debian.org
>>>> cc_compile_date   Â  Â  Â : Mon Nov  7 09:18:26 CET 2011
>>>> xend_config_format   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?
>>

Uh... So I guess it's supposed to be supported

>
> That is saying your host supports 32bit paravirt guests only.
>
> What's the output of 'virsh --connect xen:/// capabilities' ?

blackie% virsh -c xen+ssh://lux-002 capabilities
<capabilities>

  <host>
    <cpu>
      <arch>i686</arch>
      <features>
        <pae/>
      </features>
    </cpu>
    <migration_features>
      <live/>
      <uri_transports>
        <uri_transport>xenmigr</uri_transport>
      </uri_transports>
    </migration_features>
    <topology>
      <cells num='1'>
        <cell id='0'>
          <cpus num='4'>
            <cpu id='0'/>
            <cpu id='1'/>
            <cpu id='2'/>
            <cpu id='3'/>
          </cpus>
        </cell>
      </cells>
    </topology>
  </host>

  <guest>
    <os_type>xen</os_type>
    <arch name='i686'>
      <wordsize>32</wordsize>
      <emulator>/usr/lib/xen/bin/qemu-dm</emulator>
      <machine>xenpv</machine>
      <domain type='xen'>
      </domain>
    </arch>
    <features>
      <pae/>
    </features>
  </guest>

</capabilities>



-- 
Regards,
Cheer Xiao aka. xiaq


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