[libvirt-users] VM freezes while insmod virtio_net.ko

[jason]

By downgrading DPDK to 16.11, the problem was solved.

On Jul 9, 2017 10:56 PM, "jason" <huzhijiang at gmail.com> wrote:

> Hi all,
>
> I encountered a tricky problem. I am using ovs+DPDK on the host side
> to build the virtual network, so on the VM side , the virtio_net.ko
> module is used to drive the nic. But VM always freezes while insmod
> virtio_net.ko (I found  virtio_net.ko is located in initrams.img by
> defualt, so I had to delete all virtio modules from initramfs.img and
> insmod then one by one after system is loaded to confirm that).
>
> After such freeze, virsh reset can not recover it due to cannot
> acquire state change lock (held by remoteDispatchDomainReset) so I
> have to use virsh destroy instead.
>
> On the ovs-vswitchd side, the last log I can see is:
>
>
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_NUM
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_BASE
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_ADDR
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_KICK
> VHOST_CONFIG: vring kick idx:0 file:59
> VHOST_CONFIG: virtio is not ready for processing.
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
> VHOST_CONFIG: vring call idx:0 file:60
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_NUM
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_BASE
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_ADDR
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_KICK
> VHOST_CONFIG: vring kick idx:1 file:46
> VHOST_CONFIG: virtio is not ready for processing.
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
> VHOST_CONFIG: vring call idx:1 file:61
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_ENABLE
> VHOST_CONFIG: set queue enable: 1 to qp idx: 0
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_ENABLE
> VHOST_CONFIG: set queue enable: 1 to qp idx: 1
> VHOST_CONFIG: read message VHOST_USER_SET_FEATURES
>
> Software version I used are:
>
> guest kernel: 3.10.0-514.26.2.el7.x86_64
> host kernel: 3.10.0-514.26.2.el7.x86_64
> host libvirt: 2.0.0-10.el7_3.9.x86_64
> host qemu: 2.6.0-28.el7.10.1
> host openvswitch: git 2.7.0
> host DPDK: git  17.02.0
>
> Please help to have a look at this issue.
>
> --
> B.R.,
> Jason
>
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