http://wiki.qemu.org/Features/vhost-user-ovs-dpdk
I'm running to problems attempting to try this out. qemu errors out with qemu-system-x86_64: -object memory-backend-file,id=mem,size=1024M,mem-path=/dev/hugepages,share=on: unable to map backing store for hugepages: Cannot allocate memory http://pastebin.com/raw.php?i=kSkU8S03 Could someone take a look at this and see what might be wrong ? thanks, -Chandra On Thu, Sep 17, 2015 at 01:08:36PM +0300, Marcel Apfelbaum wrote: >* On 09/16/2015 08:44 PM, Flavio Leitner wrote:* >* >On Thu, Sep 10, 2015 at 10:51:19PM +0300, Marcel Apfelbaum wrote:* >* >>Hi,* >* >>* >* >>The page describes how to setup an environment that allows * >* >>testing/developing* >* >>vhost-user using ovs (with dpdk) as backend.* >* >>* >* >>A regular pc machine can be used, no need for several hosts, a 'dpdk * >* >>enabled' NIC or 1G huge-pages.* >* >>* >* >>The goal is to connect guests' virtio-net devices having vhost-user >backend * >* >>to OVS dpdkvhostuser ports* >* >>and be able to run any kind of network traffic between them.* >* >>* >* >>The page can be found at:* >* >>http://wiki.qemu.org/Features/vhost-user-ovs-dpdk ><http://wiki.qemu.org/Features/vhost-user-ovs-dpdk>* >* >>* >* >>I want to keep it as simple as possible.* >* >>If you see steps that can be skipped or unneeded configuration please let * >* >>me know* >* >>or feel free to update the page.* >* >* >* >I gave a quick look and found couple issues. It seems to be missing* >* >the installing steps for qemu. Also the eventfd_link module is only* >* >needed for vhost-cuse, so you don't need to build/install/load at all.* >* Hi Flavio,* >* Thank you for reviewing the document!* > >* For some reason I thought we still need eventfd_link to notify the guests* >* when new packets arrive. Indeed we don't need this anymore, I updated the * >* wiki page.* > We use the one provided by kernel. The eventfd_link on DPDK is special for > vhost-cuse: > https://github.com/openvswitch/ovs/blob/master/INSTALL.DPDK.md#dpdk-vhost-cuse-prerequisites >* Regarding QEMU, can you please point me to the missing setup steps?* >* (I think I already took care of them, anyway I want to be sure)* > Yup, I missed that you are running qemu from the builddir, not from > the system, so you don't need to install it. > Thanks again, > fbl
