Re: [libvirt-users] fstrim support in libvirt/qemu guests

On 01.11.2014 05:30, Dennis Jacobfeuerborn wrote:

Hi, I'm trying to find out how to enable fstrim support for libvirt/qemu guests. Specifically I'm trying to enable this on a CentOS 7 host (qemu 1.5). I searched the web but only found very vague information and no clear documentation on the requirements or how to modify the guest xml to enable discard/fstrim support.

Can someone point me in the right direction?

One thing that you'll need is the guest agent: http://wiki.libvirt.org/page/Qemu_guest_agent Then you can just use: # virsh domfstrim $dom Michal