On 5/24/23 20:04, Alex Yeh (ayeh) via discuss wrote:
> Hi All,
>
> A little more info on the qemu version of the working and not
> working setup.
>
> Thanks
> Alex
>
> Working:
> [root@nfvis ~]# /usr/libexec/qemu-kvm --version
> QEMU emulator version 4.2.0 (qemu-kvm-4.2.0-48.el8)
> Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers
>
> [root@nfvis ~]#
> Non-working:
>
> [root@nfvis ~]# /usr/libexec/qemu-kvm --version
> QEMU emulator version 6.2.0 (qemu-kvm-6.2.0-11.el8)
> Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers
>
> Thanks
> Alex
>
> *From: *"Alex Yeh (ayeh)" <a...@cisco.com>
> *Date: *Tuesday, May 23, 2023 at 2:58 PM
> *To: *"ovs-discuss@openvswitch.org" <ovs-discuss@openvswitch.org>
> *Subject: *Ping over dpdk bridge failed after upgrade to OVS 2.17.3
>
> Hi All,
>
> We were running OVS 2.13.0/DPDK 19.11.1 and the VMs were able to ping over
> the DPDK bridge. After upgrade to OVS 2.17.3 the VMs can’t ping over the DPDK
> bridge with the same OVS config. Does anyone have seen the same issue and
> have a way to fix the issue?
Nothing in particular comes to mind. You need to check the logs for warnings
or errors. And check datapath flows installed to see if there is something
abnormal there. Check QEMU logs for vhost user related messages.
If everything looks correct, but there is no traffic, check if you have
shared memory backend in qemu (a common issue when everything seems normal).
Best regards, Ilya Maximets.
>
> Thanks
> Alex
>
> OVS bridge setup, VMs are connected to vnic1 and vnic3:
>
> Bridge dpdk-br
> datapath_type: netdev
> Port dpdk-br
> Interface dpdk-br
> type: internal
>
> Port vnic1
> Interface vnic1
> type: dpdkvhostuserclient
> options: {vhost-server-path="/run/vhostfd/vnic1"}
>
> Port vnic3
> Interface vnic3
> type: dpdkvhostuserclient
> options: {vhost-server-path="/run/vhostfd/vnic3"}
>
> ovs_version: "2.17.7"
>
> Working:
> [root@nfvis-csp-45 ~]# ovs-vswitchd --version
> ovs-vswitchd (Open vSwitch) 2.13.0
> DPDK 19.11.1
>
> Not working:
> [root@nfvis nfvos-confd]# ovs-vswitchd --version
> ovs-vswitchd (Open vSwitch) 2.17.3
> DPDK 21.11.0
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