[OmniOS-discuss] Managing KVM virtual machines

[Jorge Schrauwen]

This will not cleanly shutdown your vm's at system halt though. 

But if you can live with that, that will work fine :) 

On 2014-09-29 11:59, Filip Marvan wrote: 

> Hello Jorge, 
> 
> thank you for reply. I found another quite simply solution. When I set sevice properties in manifest like this: 
> 
> <property_group name='startd' type='framework'> 
> 
> <propval name='duration' type='astring' value='contract' /> 
> 
> <propval name='ignore_error' type='astring' value='core,signal' /> 
> 
> </property_group> 
> 
> it does exactly what I need. Qemu process is still monitored by SMF, but when process stoped (because of shutdown from guest), SMF will not restart process again, but service is switched to maintanance mode. 
> 
> So now when I list KVM services, I can see, which are running (are online) and which are not (are maintanance). 
> 
> Filip 
> 
> FROM: Jorge Schrauwen [mailto:sjorge+ml at blackdot.be] 
> SENT: Friday, September 26, 2014 11:35 PM
> TO: Filip Marvan
> CC: omnios-discuss at lists.omniti.com
> SUBJECT: Re: [OmniOS-discuss] Managing KVM virtual machines 
> 
> You can make qemu dump a monitoring socket, you can then use netcat to send commands like acpi shutdown events but also query other info. If the socket is dead, the qemu process crashed. 
> 
> So applying some wrapper magic it could be possible to make the svc more intelligent. I can't offor you a working manifest though :( I theorized about it but deemed it too much work for the one vm I run. I do use the qemu monitoring socket however. 
> 
> -chardev socket,id=monitor,path=/vms/hosts/${VMNAME}/run/monitor.sock,server,nowait 
> -monitor chardev:monitor 
> 
> To add the monitor 
> 
> Hope this is somewhat helpful! 
> 
> Regards 
> 
> Jorge
 
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