It is possible to do QoS for disk I/O with blktap2? Can any of you be so kind and point me to the right direction, perhaps a doc or a tutorial somewhere? _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
I moved your question to xen-users. On Tue, Mar 20, 2012 at 10:36 AM, ND KK <k110168@gmail.com> wrote:> > It is possible to do QoS for disk I/O with blktap2?Yes. Somewhat. But it''s not part of xen.> > Can any of you be so kind and point me to the right direction, perhaps a doc > or a tutorial somewhere?AFAIK Oracle VM (which uses a customized version of xen under the hood) uses ionice to do that. The problem is, like I said earlier, it''s not part of xen (the hypervisor and userland tools), so you either need to write your own scripts to do that. Or just use Oracle VM. Another alternative would be using latest vanilla kernel, and use block cgroup: http://www.mjmwired.net/kernel/Documentation/cgroups/blkio-controller.txt -- Fajar
I moved your question to xen-users. On Tue, Mar 20, 2012 at 10:36 AM, ND KK <k110168@gmail.com> wrote:> > It is possible to do QoS for disk I/O with blktap2?Yes. Somewhat. But it''s not part of xen.> > Can any of you be so kind and point me to the right direction, perhaps a doc > or a tutorial somewhere?AFAIK Oracle VM (which uses a customized version of xen under the hood) uses ionice to do that. The problem is, like I said earlier, it''s not part of xen (the hypervisor and userland tools), so you either need to write your own scripts to do that. Or just use Oracle VM. Another alternative would be using latest vanilla kernel, and use block cgroup: http://www.mjmwired.net/kernel/Documentation/cgroups/blkio-controller.txt -- Fajar