From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by dpdk.org (Postfix) with ESMTP id 62A1C2716 for ; Thu, 17 Dec 2015 04:11:56 +0100 (CET) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP; 16 Dec 2015 19:11:44 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,439,1444719600"; d="scan'208";a="873183502" Received: from yliu-dev.sh.intel.com ([10.239.66.49]) by orsmga002.jf.intel.com with ESMTP; 16 Dec 2015 19:11:41 -0800 From: Yuanhan Liu To: dev@dpdk.org Date: Thu, 17 Dec 2015 11:11:55 +0800 Message-Id: <1450321921-27799-1-git-send-email-yuanhan.liu@linux.intel.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1449027793-30975-1-git-send-email-yuanhan.liu@linux.intel.com> References: <1449027793-30975-1-git-send-email-yuanhan.liu@linux.intel.com> Cc: "Michael S. Tsirkin" , Yang Maggie , Victor Kaplansky Subject: [dpdk-dev] [PATCH v2 0/6] vhost-user live migration support X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Dec 2015 03:11:57 -0000 This patch set adds the vhost-user live migration support. The major task behind that is to log pages we touched during live migration, including used vring and desc buffer. So, this patch set is basically about adding vhost log support, and using it. Patchset ======== - Patch 1 handles VHOST_USER_SET_LOG_BASE, which tells us where the dirty memory bitmap is. - Patch 2 introduces a vhost_log_write() helper function to log pages we are gonna change. - Patch 3 logs changes we made to used vring. - Patch 4 logs changes we made to vring desc buffer. - Patch 5 and 6 add some feature bits related to live migration. A simple test guide (on same host) ================================== The following test is based on OVS + DPDK (check [0] for how to setup OVS + DPDK): [0]: http://wiki.qemu.org/Features/vhost-user-ovs-dpdk Here is the rough test guide: 1. start ovs-vswitchd 2. Add two ovs vhost-user port, say vhost0 and vhost1 3. Start a VM1 to connect to vhost0. Here is my example: $ $QEMU -enable-kvm -m 1024 -smp 4 \ -chardev socket,id=char0,path=/var/run/openvswitch/vhost0 \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1,mac=52:54:00:12:34:58 \ -object memory-backend-file,id=mem,size=1024M,mem-path=$HOME/hugetlbfs,share=on \ -numa node,memdev=mem -mem-prealloc \ -kernel $HOME/iso/vmlinuz -append "root=/dev/sda1" \ -hda fc-19-i386.img \ -monitor telnet::3333,server,nowait -curses 4. run "ping $host" inside VM1 5. Start VM2 to connect to vhost0, and marking it as the target of live migration (by adding -incoming tcp:0:4444 option) $ $QEMU -enable-kvm -m 1024 -smp 4 \ -chardev socket,id=char0,path=/var/run/openvswitch/vhost1 \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1,mac=52:54:00:12:34:58 \ -object memory-backend-file,id=mem,size=1024M,mem-path=$HOME/hugetlbfs,share=on \ -numa node,memdev=mem -mem-prealloc \ -kernel $HOME/iso/vmlinuz -append "root=/dev/sda1" \ -hda fc-19-i386.img \ -monitor telnet::3334,server,nowait -curses \ -incoming tcp:0:4444 6. connect to VM1 monitor, and start migration: > migrate tcp:0:4444 7. After a while, you will find that VM1 has been migrated to VM2, and the "ping" command continues running, perfectly. Cc: Chen Zhihui Cc: Yang Maggie --- Yuanhan Liu (6): vhost: handle VHOST_USER_SET_LOG_BASE request vhost: introduce vhost_log_write vhost: log used vring changes vhost: log vring desc buffer changes vhost: claim that we support GUEST_ANNOUNCE feature vhost: enable log_shmfd protocol feature lib/librte_vhost/rte_virtio_net.h | 36 ++++++++++- lib/librte_vhost/vhost_rxtx.c | 88 +++++++++++++++++++-------- lib/librte_vhost/vhost_user/vhost-net-user.c | 7 ++- lib/librte_vhost/vhost_user/vhost-net-user.h | 6 ++ lib/librte_vhost/vhost_user/virtio-net-user.c | 48 +++++++++++++++ lib/librte_vhost/vhost_user/virtio-net-user.h | 5 +- lib/librte_vhost/virtio-net.c | 5 ++ 7 files changed, 165 insertions(+), 30 deletions(-) -- 1.9.0