libvirt users - May 2012 - Destroy VM failed.

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On 05/07/2012 11:12 AM, david_zhu wrote:
> Hi,
>
> When I destroy a VM, sometimes virsh will report failed.
> So I tried the following shell script:
>
>
> -bash-4.1# for ((i=0; i<1000; i++)); do virsh start david_mac; virsh
> destroy david_mac; if [ $? != 0 ] ; then echo $i; break; fi; done
It always works well for me based on the following version:
# virsh version
Compiled against library: libvir 0.9.10
Using library: libvir 0.9.10
Using API: QEMU 0.9.10
Running hypervisor: QEMU 0.12.1
>
> Domain david_mac started
>
> Domain david_mac destroyed
>
> ......
>
> Domain david_mac started
>
> error: Failed to destroy domain david_mac
> error: Requested operation is not valid: domain is not running
>
> 35
>
>
> It always fail, and the VM state become "shut off":
>
> -bash-4.1# virsh list --all
> Id Name State
> ----------------------------------
> - david_mac shut off
>
>
> My libvirt/KVM version is:
>
> -bash-4.1# virsh version
> Compiled against library: libvir 0.9.8
> Using library: libvir 0.9.8
> Using API: QEMU 0.9.8
> Running hypervisor: QEMU 0.14.1
>
>
> Is this a libvirt bug, or KVM problem ?
I'm not sure it's a bug of libvirt 0.9.8, maybe, you may upgrade your
libvirt then check it again. thanks.
>
>
> -- 
>
> *Best Regards *
>
> **************************************************************************
> *
>
> *David Zhu * *?? * Firmware Engineer
>
> Enterprise Storage / R&D Dept.
>
> Universal Scientific Industrial (Shanghai) Co., Ltd
>
> 421 Lishizhen Road, Pudong New Area, Shanghai, P.R. China 201203 ??
> ????????????????421? ??: 201203
>
> Fax: +86-21-58967931 Tel: +86-21-58966996 *ext. 81468 *
>
> http://www.usi.com.tw <http://www.usi.com.tw/> *E-mail:
> _david_zhu at usish.com <mailto:cotton_sun at usish.com> _ *
>
> ***************************************************************************
> *
>
>
> _______________________________________________
> libvirt-users mailing list
> libvirt-users at redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users
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On 05/06/2012 09:12 PM, david_zhu wrote:
> Hi,
> 
> When I destroy a VM, sometimes virsh will report failed.
> So I tried the following shell script:
> 
> 
> -bash-4.1# for ((i=0; i<1000; i++)); do virsh start david_mac; virsh
destroy
> david_mac; if [ $? != 0 ] ; then echo $i; break; fi; done
> 
> Domain david_mac started
> 
> Domain david_mac destroyed
> 
> ......
> 
> Domain david_mac started
> 
> error: Failed to destroy domain david_mac
> error: Requested operation is not valid: domain is not running
Bear in mind that there is an inherent race: a guest could itself
request a shutdown prior to the point that you issue the destroy
command, in which case the destroy will fail because the guest is
already shutdown.  Since the end goal is the same (the guest is shut off
either way), it is a good idea to write your scripts to be robust to
this particular race.

That said, if your guest isn't specifically requesting a shutdown, it
seems odd that you are encountering a race, so there may be something
else at play here.  Does the log of the guest give any particular hints?

-- 
Eric Blake   eblake at redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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