Shutdown guests on powerfailure.
 

Hi,

When power fails, the UPS (nut) save the state of all aktive guests.
This takes a lot of time.

Is it possible to make nut do a normal shutdown instead ?

Regards.

Which software does nut use on the host when the power fails?

Which virtualisation software is used to run the guests?

We use Cent OS 6.2 with KVM.

Here are the config-files. I think it's Netwatch, not 100% sure.

’root@nyborg ~�# cd /etc
’root@nyborg etc�# cd ups
’root@nyborg ups�# ls -l
total 40
-rwxrwxrwx 1 nobody root 157 Jan 30 14:42 notify.sh
-rw-r----- 1 root nut 1413 Aug 5 2011 nut.conf
-rw-r----- 1 root nut 3738 Nov 24 12:08 ups.conf
-rw-r----- 1 root nut 2589 Nov 24 13:29 upsd.conf
-rw-r----- 1 root nut 2271 Nov 24 12:12 upsd.users
-rw-r----- 1 root nut 12308 Dec 2 15:03 upsmon.conf
-rw-r----- 1 root nut 3891 Aug 5 2011 upssched.conf
’root@-nyborg ups�#
’root@-nyborg ups�#

The UPS-software is nut !

According to the upsmon.conf man page, SHUTDOWNCMD command can be used to configure a command for upsmon to run when the system needs to be brought down. That command could be a script which shuts down the VMs and then shuts down the host.

IDK KVM so cannot advise on the command(s) to shut down the VMs. If netsearching dosn't give you a solution, it might be worth a new thread, asking how to shut down KVM VMs programatically.

Non-default shutdown
 

We had the same problem with nut waiting until the battery had about 2 minutes life left in it. This corrupted the VM's because they needed time to save their state to the disk.
The approach of using a Non-default shutdown worked for us.
Check this out
http://linuxman.wikispaces.com/NUT
and scroll down to the Non-default shutdown section.

Thanks :-)

I'll test it.