VM status

VM status

[jd]

Hi
   How do I get status of a VM ? What states are
available ?
   running, stopped/paused, shutting down, blocked,
starting ?

-- I want to know if the VM is paused or not. (via
monitor or any other means)


Thanks
/Jd


 
____________________________________________________________________________________
8:00? 8:25? 8:40? Find a flick in no time 
with the Yahoo! Search movie showtime shortcut.
http://tools.search.yahoo.com/shortcuts/#news

-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/

Re: VM status

[Dor Laor]

>Hi
>   How do I get status of a VM ? What states are
>available ?
>   running, stopped/paused, shutting down, blocked,
>starting ?

For some of these states you'll need an agent running within the guest
{starting, shutting down}. 

Note that currently except for virt-manager/libvirt there is no open
source management tool.

>
>-- I want to know if the VM is paused or not. (via
>monitor or any other means)

You can try the qemu-list, except for trying to ping/vnc a paused vm I
don't know.
>
>Thanks
>/Jd
>
>
>
>_______________________________________________________________________
____
>_________
>8:00? 8:25? 8:40? Find a flick in no time
>with the Yahoo! Search movie showtime shortcut.
>http://tools.search.yahoo.com/shortcuts/#news
>
>-----------------------------------------------------------------------
--
>This SF.net email is sponsored by DB2 Express
>Download DB2 Express C - the FREE version of DB2 express and take
>control of your XML. No limits. Just data. Click to get it now.
>http://sourceforge.net/powerbar/db2/
>_______________________________________________
>kvm-devel mailing list
>kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>https://lists.sourceforge.net/lists/listinfo/kvm-devel

-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/

Re: VM status

[jd]

Thanks again... see below.

-- Dor Laor <dor.laor-atKUWr5tajBWk0Htik3J/w@public.gmane.org> wrote:

> >Hi
> >   How do I get status of a VM ? What states are
> >available ?
> >   running, stopped/paused, shutting down, blocked,
> >starting ?
> 
> For some of these states you'll need an agent
> running within the guest
> {starting, shutting down}. 
> 
With the agent on box, how does one go about doing it
? 

running : the process may be running but VM not.
starting/shutdown : anything in /proc/pid/stat ?


> Note that currently except for virt-manager/libvirt
> there is no open
> source management tool.
> 
> >
> >-- I want to know if the VM is paused or not. (via
> >monitor or any other means)
> 
> You can try the qemu-list, except for trying to
> ping/vnc a paused vm I
> don't know.
> >

This highlights the fact that some work needs to be
done at qemu/kvm level to make it managable. (NOT
necessarily at libvirt level).
(Anyone trying to slap an xmlrpc server to API called
by the qemu-monitor ?)

/Jd


> >Thanks
> >/Jd
> >
> >
> >
>
>_______________________________________________________________________
> ____
> >_________
> >8:00? 8:25? 8:40? Find a flick in no time
> >with the Yahoo! Search movie showtime shortcut.
> >http://tools.search.yahoo.com/shortcuts/#news
> >
>
>-----------------------------------------------------------------------
> --
> >This SF.net email is sponsored by DB2 Express
> >Download DB2 Express C - the FREE version of DB2
> express and take
> >control of your XML. No limits. Just data. Click to
> get it now.
> >http://sourceforge.net/powerbar/db2/
> >_______________________________________________
> >kvm-devel mailing list
> >kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>
>https://lists.sourceforge.net/lists/listinfo/kvm-devel
> 



       
____________________________________________________________________________________Get the free Yahoo! toolbar and rest assured with the added security of spyware protection.
http://new.toolbar.yahoo.com/toolbar/features/norton/index.php

-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/

Re: VM status

[Anthony Liguori]

jd wrote:
> Thanks again... see below.
>
> -- Dor Laor <dor.laor-atKUWr5tajBWk0Htik3J/w@public.gmane.org> wrote:
>
>   
>>> Hi
>>>   How do I get status of a VM ? What states are
>>> available ?
>>>   running, stopped/paused, shutting down, blocked,
>>> starting ?
>>>       

These sound very familiar :-)  These are the states that a Xen VM can be in.

They don't all make a whole lot of sense in the context of KVM.

A KVM VM is just like a Linux process.  You can use the traditional 
process states for a VM.

One thing that's missing from KVM/QEMU is the ability to determine if a 
VM is stopped.  A monitor command is needed to expose that info.

> This highlights the fact that some work needs to be
> done at qemu/kvm level to make it managable. (NOT
> necessarily at libvirt level).
> (Anyone trying to slap an xmlrpc server to API called
> by the qemu-monitor ?)
>   

Eek!  That's not going to happen.

The monitor is an RPC protocol that also happens to be human readable.  
It would be real nice to have a client library for that protocol for 
many different languages but, of course, that's what libvirt is :-)

Regards,

Anthony Liguori

> /Jd
>
>
>   
>>> Thanks
>>> /Jd
>>>
>>>
>>>
>>>       
>> _______________________________________________________________________
>> ____
>>     
>>> _________
>>> 8:00? 8:25? 8:40? Find a flick in no time
>>> with the Yahoo! Search movie showtime shortcut.
>>> http://tools.search.yahoo.com/shortcuts/#news
>>>
>>>       
>> -----------------------------------------------------------------------
>> --
>>     
>>> This SF.net email is sponsored by DB2 Express
>>> Download DB2 Express C - the FREE version of DB2
>>>       
>> express and take
>>     
>>> control of your XML. No limits. Just data. Click to
>>>       
>> get it now.
>>     
>>> http://sourceforge.net/powerbar/db2/
>>> _______________________________________________
>>> kvm-devel mailing list
>>> kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>>>       
>> https://lists.sourceforge.net/lists/listinfo/kvm-devel
>>
>>     
>
>
>
>        
> ____________________________________________________________________________________Get the free Yahoo! toolbar and rest assured with the added security of spyware protection.
> http://new.toolbar.yahoo.com/toolbar/features/norton/index.php
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> http://sourceforge.net/powerbar/db2/
> _______________________________________________
> kvm-devel mailing list
> kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> https://lists.sourceforge.net/lists/listinfo/kvm-devel
>
>   


-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/