** Description changed: + [Impact] + + * Cable detection breaks i40e driver based use cases in some setups + + * An upstream patch was identified that resolves the issues, proposed and + accepted upstream-stable and hereby backported (as we do not want to + wait for 19.10.11 in December) along the 19.11.10 updates. + + [Test Plan] + + * Nobuto has contact with a site that has a setup with the right cables + and devices to trigger this. He will coordinate the testing of this on + Focal. + * For non-Focal this is part of the normal MRE policy for DPDK + (see bug 1940913) as it is (will be) part of the upstream stable + releases. + + [Where problems could occur] + + * First of all this only affects a certain driver (i40e) all others will + be unchanged due to this. When using that driver the detection of + cables is adjusted and thereby the use-cases to look out for regression + is more like "establish connection" "restart connection" and "setup" + than let's say "bulk traffic" + + [Other Info] + + * The patch is accepted in the WIP 19.11.11 stable release and will on + the next MRE be everywhere (not just in Ubuntu) + + --- + + - Ubuntu 20.04 LTS - dpdk 19.11.7-0ubuntu0.20.04.1 - (we tested it with 19.11.10~rc1, but the problem persists) + (we tested it with 19.11.10~rc1, but the problem persists) - Intel XXV710 - Cisco 25G AOC cables Patch to backport: https://git.dpdk.org/dpdk/commit/?id=b1daa3461429e7674206a714c17adca65e9b44b4 [Impact] DPDK ports for a bond get disabled and no traffic goes in and out after openvswitch restart with the combination above. If that happens the DPDK bond has to be re-created as a workaround but it's not feasible since service restart basically breaks everything. - ---- dpdk-bond0 ---- - bond_mode: balance-tcp - bond may use recirculation: yes, Recirc-ID : 1 - bond-hash-basis: 0 - updelay: 0 ms - downdelay: 0 ms - next rebalance: 7267 ms - lacp_status: configured - lacp_fallback_ab: false - active slave mac: 00:00:00:00:00:00(none) - slave dpdk-7272e20: disabled - may_enable: false - slave dpdk-d2cb784: disabled - may_enable: false + ---- dpdk-bond0 ---- + bond_mode: balance-tcp + bond may use recirculation: yes, Recirc-ID : 1 + bond-hash-basis: 0 + updelay: 0 ms + downdelay: 0 ms + next rebalance: 7267 ms + lacp_status: configured + lacp_fallback_ab: false + active slave mac: 00:00:00:00:00:00(none) + slave dpdk-7272e20: disabled + may_enable: false + slave dpdk-d2cb784: disabled + may_enable: false [Test Plan] 1. configure a DPDK bond with openvswitch as follows for example. $ sudo ovs-appctl bond/show dpdk-bond0 - ---- dpdk-bond0 ---- - bond_mode: balance-tcp - bond may use recirculation: yes, Recirc-ID : 1 - bond-hash-basis: 0 - updelay: 0 ms - downdelay: 0 ms - next rebalance: 1691 ms - lacp_status: negotiated - lacp_fallback_ab: false - active slave mac: 40:a6:b7:XX:YY:ZZ(dpdk-d2cb784) - slave dpdk-7272e20: enabled - may_enable: true - slave dpdk-d2cb784: enabled - active slave - may_enable: true + ---- dpdk-bond0 ---- + bond_mode: balance-tcp + bond may use recirculation: yes, Recirc-ID : 1 + bond-hash-basis: 0 + updelay: 0 ms + downdelay: 0 ms + next rebalance: 1691 ms + lacp_status: negotiated + lacp_fallback_ab: false + active slave mac: 40:a6:b7:XX:YY:ZZ(dpdk-d2cb784) + slave dpdk-7272e20: enabled + may_enable: true + slave dpdk-d2cb784: enabled + active slave + may_enable: true 2. Apply updated packages 3. Reboot the machine (just to make sure we are not using anything old) 4. Restart the openvswitch $ sudo systemctl restart openvswitch-switch 5. Confirm ports are enabled after both the step 3. and 4. and the port status matches the one in the step 1. - [Where problems could occur] The scope of the patch is i40e and the two specific cable types only: i40e + 25G AOC and ACC cables so it's unlikely to affect any other combinations. Before this patch, 25G AOC/ACC cables were not in the additional PHY types of the driver functionality so it's not likely to make things worse.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1940957 Title: DPDK ports get disabled after Open vSwitch restart with Intel XXV710(i40e) and 25G AOC cables To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpdk/+bug/1940957/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
