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Re: [libvirt] question about the commands: domhostname and hostname



On 09/12/2012 08:50 AM, Li Zhang wrote:
> On Wed, Sep 12, 2012 at 2:40 PM, Martin Kletzander <mkletzan redhat com> wrote:
>> On 09/12/2012 07:59 AM, Li Zhang wrote:
>>> Sorry for wrong subject prefix of my mail, correct it. -:)
>>>
>>
>> The [libvirt] tag in the prefix is done automatically, you don't have to
>> do that ;)
>>
> Got it, thanks. :)
> 
>>> On Wed, Sep 12, 2012 at 1:57 PM, Li Zhang <zhlcindy gmail com> wrote:
>>>> Hi all,
>>>>
>>>> I am testing the virsh commands, and I found that these two commands:
>>>>  * domhostname
>>>>  * hostname
>>>>
>>>> From the manual of virsh commands:
>>>> * hostname
>>>>            Print the hypervisor hostname.
>>>> * domhostname domain
>>>>            Returns the hostname of a domain, if the hypervisor makes
>>>> it available
>>>>
>>>> It seems that both of them want to get the host name. What's the
>>>> difference between them?
>>>>
>>
>> Basically it's what's written. "virsh hostname" will give you the
>> hostname of the hypervisor (host), but "virsh domhostname <domain>" is
>> trying to get the hostname of the specified domain (guest).
>>
> Oh, domhostname is the guest's name. Am I right?

domhostname is the guest's hostname, however...

> I saw virsh also has such a command to get guest's name:
> $virsh domname domain-id-or-uuid
> 

...this is the name of the domain (basically this function converts ID
or UUID of the domain to its name).

>>>> From the source code, domhostname only is supported for openvz on 0.10.1.
>>>> Will this  be only for openvz in the future?
>>>>
>>
>> I don't know about anyone trying to work on this, but it doesn't mean it
>> won't change. It's possible to implement it for some other hypervisors
>> as well, but nobody had the need to, I guess.
> 
> I see, thanks a lot for your reply!
> 
>>
>>>> Any idea?
>>>>
>>>> Thanks a lot in advance. -:)
>>>>
>>>> --
>>>> Best Regards
>>>> -Li
>>>
>>
>> Martin
>>
> 
> 
> 


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