[vfio-users] Preventing host from going into sleep

[Nicolas Roy-Renaud]

As it turns out, it's not just about permissions; doing anything too 
complex in the wrapper script can interfere with the way libvirt manages 
qemu VMs and make it unable to shut them down properly (whether that's 
due to signal propagation in bash scripts or arguments being altered in 
some way). Since there doesn't seem to be any kind of mechanism to 
inhibit sleep on the host side when theVM is running, though, I might 
check on libvirt's mailing lists to see if such a thing could be 
implemented.

-Nicolas


On 2016-06-22 02:00, Samuel Holland wrote:
> On 06/22/2016 12:01 AM, Nicolas Roy-Renaud wrote:
>> By the looks of it, I can't write a wrapper script for qemu-system
>> either since libvirt doesn't launch it with the same capabilities as
>> a regular user, and the dbus calls coming from sysd-inhibit fail.
>
> You should be able to change the permissions to the dbus interface so
> that you can call it from a wrapper.
>
> -- 
> Regards,
> Samuel Holland <samuel at sholland.org>