After a reboot and restart of ovs-vswitchd I have seen these EAL logs pointing to the problem:
EAL: vhost-user socket cannot set permissions to 0664 (Unknown error -1). EAL: vhost-user socket unable to set ownership to libvirt-qemu:kvm (Unknown error -1). VHOST_CONFIG: vhost-user server: socket created, fd: 41 VHOST_CONFIG: bind to /var/run/openvswitch/vhu6ef65d50-d7 Then I looked into vhost-net-user.c:rte_vhost_driver_register(). I have seen that rte_eal_set_socket_permissions(path) is done before the socket actually created and then I moved this call into vhost_user_create_server() after bind() and it started to work. Attached is the patch. I hope that makes sense (also need this in vhost_user_create_client() ?) . After rebuilding dpdk and restart ovs- vswitchd it looks better and nova boot now works. Starting ovs-vswitchd: ::: Zone 0: name:<rte_eth_dev_data>, phys:0x1bfffced40, len:0x30100, virt:0x7f40fffced40, socket_id:1, flags:0 VHOST_CONFIG: vhost-user server: socket created, fd: 41 VHOST_CONFIG: bind to /var/run/openvswitch/vhu6c018db8-c2 EAL: Socket /var/run/openvswitch/vhu6c018db8-c2 changed permissions to 0664 EAL: Socket /var/run/openvswitch/vhu6c018db8-c2 changed ownership to libvirt-qemu:kvm. VHOST_CONFIG: vhost-user server: socket created, fd: 48 VHOST_CONFIG: bind to /var/run/openvswitch/vhu6ef65d50-d7 EAL: Socket /var/run/openvswitch/vhu6ef65d50-d7 changed permissions to 0664 EAL: Socket /var/run/openvswitch/vhu6ef65d50-d7 changed ownership to libvirt-qemu:kvm. root@compute29:~# ll /var/run/openvswitch/ ::: srw-rw-r-- 1 libvirt-qemu kvm 0 Sep 26 11:09 vhu6c018db8-c2= srw-rw-r-- 1 libvirt-qemu kvm 0 Sep 26 11:09 vhu6ef65d50-d7= srw-rw-r-- 1 libvirt-qemu kvm 0 Sep 26 11:16 vhu927b950f-f1= <<---- nova booted new vm ** Patch added: "Moves rte_eal_set_socket_permissions() into vhost_user_create_server()" https://bugs.launchpad.net/ubuntu/+source/dpdk/+bug/1625542/+attachment/4748866/+files/dpdk_vhost_permission_tikoehle.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1625542 Title: --vhost-owner --vhost-perm no more transferred to DPDK EAL commandline To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpdk/+bug/1625542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
