Hi Gui, thanks for your reply. > Actually, this two series doesn't care how blkio cgroup works. They just provide > the ability to put Guest into given cgroup and tune the tunables. > Currently, You can only control the "blkio.weight" tunable. For examle, If you'd > like to give more I/O bandwidth to a given Guest, you can assign a bigger value > to "blkio.weight" by running blkiotune command. Okay, so then basically, if I understand the current state of the blkio controller correctly (see my original message), this is useless at this point. I don't mean to offend you in any case, I just wondered how you used (or intended to use) this, since I myself did not yet find a good way to actually limit a guests I/O hunger. Regards Dominik -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list