On Fri, Oct 16, 2015 at 05:08:17PM -0400, Matt Benjamin wrote: > Hi devs (CC Bruce--here is a use case for vmci sockets transport) > > One of Sage's possible plans for Manilla integration would use nfs over the new Linux vmci sockets transport integration in qemu (below) to access Cephfs via an nfs-ganesha server running in the host vm. What does "the host vm" mean, and why is this a particularly useful configuration? --b. > > This now experimentally works. > > some notes on running nfs-ganesha over AF_VSOCK: > > 1. need stefan hajnoczi's patches for > * linux kernel (and build w/vhost-vsock support > * qemu (and build w/vhost-vsock support) > * nfs-utils (in vm guest) > > all linked from https://github.com/stefanha?tab=repositories > > 2. host and vm guest kernels must include vhost-vsock > * host kernel should load vhost-vsock.ko > > 3. start a qemu(-kvm) guest (w/patched kernel) with a vhost-vsock-pci device, e.g > > /opt/qemu-vsock/bin/qemu-system-x86_64 -m 2048 -usb -name vsock1 --enable-kvm -drive file=/opt/images/vsock.qcow,if=virtio,index=0,format=qcow2 -drive file=/opt/isos/f22.iso,media=cdrom -net nic,model=virtio,macaddr=02:36:3e:41:1b:78 -net bridge,br=br0 -parallel none -serial mon:stdio -device vhost-vsock-pci,id=vhost-vsock-pci0,addr=4.0,guest-cid=4 -boot c > > 4. nfs-gansha (in host) > * need nfs-ganesha and its ntirpc rpc provider with vsock support > https://github.com/linuxbox2/nfs-ganesha (vsock branch) > https://github.com/linuxbox2/ntirpc (vsock branch) > > * configure ganesha w/vsock support > cmake -DCMAKE_INSTALL_PREFIX=/cache/nfs-vsock -DUSE_FSAL_VFS=ON -DUSE_VSOCK -DCMAKE_C_FLAGS="-O0 -g3 -gdwarf-4" ../src > > in ganesha.conf, add "nfsvsock" to Protocols list in EXPORT block > > 5. mount in guest w/nfs41: > (e.g., in fstab) > 2:// /vsock41 nfs noauto,soft,nfsvers=4.1,sec=sys,proto=vsock,clientaddr=4,rsize=1048576,wsize=1048576 0 0 > > If you try this, send feedback. > > Thanks! > > Matt > > -- > Matt Benjamin > Red Hat, Inc. > 315 West Huron Street, Suite 140A > Ann Arbor, Michigan 48103 > > http://www.redhat.com/en/technologies/storage > > tel. 734-707-0660 > fax. 734-769-8938 > cel. 734-216-5309 > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
