On 04/06/2018 11:40 PM, Tom wrote:
Hey guys,
/dev/kvm permissions and ownership keeps reverting after starting a vm.
The ownership and permissions keep going back to
crw-rw—— root root ....
After starting a vm. I have to revert the perms and ownership to:
crw-crw-crw root kvm ....
To start any vm but it goes back to the first set of permissions as soon as I start another vm. Any hints what I could check?
What distro are you using? Libvirt is not chowning /dev/kvm. More importantly, if you're using libvirt-3.0.0 or newer libvirt spawns qemu in its own mount namespace with a separate /dev so it doesn't even touch /dev/kvm from host. Perhaps some hook script is mangling permissions? Or some patches on the top of libvirt written by distro maintainer? Michal