[OmniOS-discuss] Managing KVM virtual machines

[Filip Marvan]

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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