[libvirt-users] behaviour of "virsh shutdown domainName"

[Jorge Somavilla]

Thank you for your prompt reply, it was very helpful.

Jorge



On Mon, Mar 15, 2010 at 17:48, Daniel P. Berrange <berrange at redhat.com> wrote:
> On Sat, Mar 13, 2010 at 06:08:05PM +0100, Jorge Somavilla wrote:
>> Hi all,
>>
>> I am experiencing some problems with different versions of libvirt
>> (0.7.5 and 0.7.7), with a kvm (WinXP), host running Ubuntu 9.10, and i
>> would like to ask you two questions:
>>
>> - In virsh, after running the command "shutdown domainName", what
>> should be the final state of the domain, if the shutdown finishes
>> correctly: "shutoff", "no-state", "inactive", or the domain shouldn't
>> show in "list --all" (full clean-up)?
>
> There are two types of guest in libvirt
>
>  - persistent - they have a config file stored on disk
>  - transient - no config file & only exist while running
>
>
> If you run 'shutdown' on a  persistent guest, the final state should
> be 'shutoff'. For a transient guest, it will go away completely not
> ever visible again.
>
> NB, 'shutdown' is merely a *request* to shutdown. There is no
> guarentee that the guest OS will honour this request. If it does
> not, then you will have to kill the guest forcefully (virsh destroy)
> which removes the virtual power plug.
>
>
>> - After the command "shutdown domainName", should i be able to run the
>> command "start domainName", without first defining the domain? (i.e.:
>> does shutdown "undefine" the domain?).
>
> No, shutdown is merely a request to shutdown. It won't touch the
> configs on disk. You will also have to watch to see if it actually
> shuts down before you can run start again.
>
>> In my experience 0.7.5 used to leave the shut down domains as defined,
>> so i could run "start" right after. Testing in other hosts this
>> doesn't work always like that, and even if the domain apparently shuts
>> down correctly, the domain sometimes shows in "list --all", and
>> sometimes it doesn't. With libvirt 0.7.7 the domain never shows in
>> "list --all" after a successful shutdown, which makes me think it was
>> a bug and it has been corrected. Am i missing anything?
>
> To best of my knowledge, there is no change in semantics between these
> two versions.
>
> Daniel
> --
> |: Red Hat, Engineering, London    -o-   http://people.redhat.com/berrange/ :|
> |: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :|
> |: http://autobuild.org        -o-         http://search.cpan.org/~danberr/ :|
> |: GnuPG: 7D3B9505  -o-   F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|
>