Jon,

Can someone from Server Team look at this bug?

Thanks.

            Michael


On 03/20/2017 04:49 AM, bugproxy wrote:
> Public bug reported:
>
> == Comment: #0 - Satheesh Rajendran <email address hidden> - 2017-03-20 05:00:21 ==
> ---Problem Description---
> virsh maxvcpus throws "error: invalid argument: unable to find any emulator to serve 'ppc64le' architecture"
>  
> Contact Information = <email address hidden> 
>  
> ---uname output---
> Linux ltc-test-ci1 4.10.0-13-generic #15-Ubuntu SMP Thu Mar 9 20:27:28 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux
>  
> Machine Type = power 8 ppc64le 
>  
> ---Debugger---
> A debugger is not configured
>  
> ---Steps to Reproduce---
>  #virsh maxvcpus
> error: invalid argument: unable to find any emulator to serve 'ppc64le' architecture
>  
> Userspace tool common name: libvirt 
>  
> The userspace tool has the following bit modes: both 
>
> Userspace rpm: ii  libvirt-bin
> 2.5.0-3ubuntu4                            ppc64el      programs for the
> libvirt library,ii  qemu-kvm                                   1:2.8
> +dfsg-3ubuntu2                       ppc64el      QEMU Full
> virtualization
>
> Userspace tool obtained from project website:  na 
>  
> *Additional Instructions for <email address hidden>: 
> -Post a private note with access information to the machine that the bug is occuring on.
> -Attach ltrace and strace of userspace application.
>
> == Comment: #1 - Satheesh Rajendran <email address hidden> - 2017-03-20 05:07:45 ==
> #virsh capabilities
> <capabilities>
>
>   <host>
>     <uuid>08424246-091a-43b7-9eff-c78858b179ce</uuid>
>     <cpu>
>       <arch>ppc64le</arch>
>       <model>POWER8</model>
>       <vendor>IBM</vendor>
>       <topology sockets='1' cores='5' threads='8'/>
>       <pages unit='KiB' size='64'/>
>       <pages unit='KiB' size='16384'/>
>       <pages unit='KiB' size='16777216'/>
>     </cpu>
> ...
> ...
> ...
> ....
> <guest>
>     <os_type>hvm</os_type>
>     <arch name='ppc64le'>
>       <wordsize>64</wordsize>
>       <emulator>/usr/bin/qemu-system-ppc64le</emulator>
>       <machine maxCpus='255'>pseries-zesty</machine>
>       <machine canonical='pseries-zesty' maxCpus='255'>pseries</machine>
>       <machine maxCpus='1'>ref405ep</machine>
>       <machine maxCpus='1'>virtex-ml507</machine>
>       <machine maxCpus='2048'>powernv</machine>
>       <machine maxCpus='32'>ppce500</machine>
>       <machine maxCpus='15'>mpc8544ds</machine>
>       <machine maxCpus='1'>bamboo</machine>
>       <machine maxCpus='1'>g3beige</machine>
>       <machine maxCpus='1'>prep</machine>
>       <machine maxCpus='1'>mac99</machine>
>       <machine maxCpus='255'>pseries-2.6</machine>
>       <machine maxCpus='255'>pseries-2.7</machine>
>       <machine maxCpus='255'>pseries-2.8</machine>
>       <machine maxCpus='255'>pseries-2.4</machine>
>       <machine maxCpus='255'>pseries-2.5</machine>
>       <machine maxCpus='255'>pseries-2.2</machine>
>       <machine maxCpus='1'>taihu</machine>
>       <machine maxCpus='255'>pseries-2.3</machine>
>       <machine maxCpus='255'>pseries-xenial</machine>
>       <machine maxCpus='255'>pseries-yakkety</machine>
>       <machine maxCpus='255'>pseries-2.1</machine>
>       <domain type='qemu'/>
>       <domain type='kvm'>
>         <emulator>/usr/bin/kvm</emulator>
>         <machine maxCpus='255'>pseries-zesty</machine>
>         <machine canonical='pseries-zesty' maxCpus='255'>pseries</machine>
>         <machine maxCpus='1'>ref405ep</machine>
>         <machine maxCpus='1'>virtex-ml507</machine>
>         <machine maxCpus='2048'>powernv</machine>
>         <machine maxCpus='32'>ppce500</machine>
>         <machine maxCpus='15'>mpc8544ds</machine>
>         <machine maxCpus='1'>bamboo</machine>
>         <machine maxCpus='1'>g3beige</machine>
>         <machine maxCpus='1'>prep</machine>
>         <machine maxCpus='1'>mac99</machine>
>         <machine maxCpus='255'>pseries-2.6</machine>
>         <machine maxCpus='255'>pseries-2.7</machine>
>         <machine maxCpus='255'>pseries-2.8</machine>
>         <machine maxCpus='255'>pseries-2.4</machine>
>         <machine maxCpus='255'>pseries-2.5</machine>
>         <machine maxCpus='255'>pseries-2.2</machine>
>         <machine maxCpus='1'>taihu</machine>
>         <machine maxCpus='255'>pseries-2.3</machine>
>         <machine maxCpus='255'>pseries-xenial</machine>
>         <machine maxCpus='255'>pseries-yakkety</machine>
>         <machine maxCpus='255'>pseries-2.1</machine>
>       </domain>
>     </arch>
>     <features>
>       <cpuselection/>
>       <deviceboot/>
>       <disksnapshot default='on' toggle='no'/>
>     </features>
>   </guest>
> ...
> ...
>
> ~# arch
> ppc64le
>
> == Comment: #2 - VIPIN K. PARASHAR <email address hidden> - 2017-03-20 06:40:12 ==
> $ git log bd4ae4f5e881276b -1
> commit bd4ae4f5e881276b05e48fbd55a29c57cf1a25ff
> Author: Peter Krempa <email address hidden>
> Date:   Thu Dec 8 09:36:43 2016 +0100
>
>     virsh: maxvcpus: Always fall back to the old command if domain caps fail
>     
>     1ec22be5 added code that detects the maximum cpu count according to
>     domain capabilities. The code fell back to the old command only if the
>     API was not supported. If the API fails for other reasons the command
>     would fail. There's no point in not trying the old API in such case.
>     
>     https://bugzilla.redhat.com/show_bug.cgi?id=1402690
>
> $ git tag --contains bd4ae4f5e881276b0 | grep -v rc
> v3.0.0
> v3.1.0
> $ 
>
> Commit bd4ae4f5e881276b should fix this issue. 
> Its available in libvirt version 3.0 and above.
>
> ** Affects: libvirt (Ubuntu)
>      Importance: Undecided
>      Assignee: Taco Screen team (taco-screen-team)
>          Status: New
>
>
> ** Tags: architecture-ppc64le bugnameltc-152716 severity-high targetmilestone-inin1704
>
> ** Tags added: architecture-ppc64le bugnameltc-152716 severity-high
> targetmilestone-inin1704
>
> ** Changed in: ubuntu
>      Assignee: (unassigned) => Taco Screen team (taco-screen-team)
>
> ** Package changed: ubuntu => libvirt (Ubuntu)
>

-- 
Michael Hohnbaum
OIL Program Manager
Power (ppc64el) Development Project Manager
Canonical, Ltd.