** Changed in: cloud-archive/train
Status: Triaged => Fix Released
** Description changed:
[Impact]
Package upgrades on installations using the dpdk binary will be automatically
switched back to the non-dpdk binary on upgrade.
This will break all configured networking within openvswitch.
[Test Case]
sudo apt install openvswitch-switch-dpdk
sudo update-alternatives --set ovs-vswitchd
/usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk
sudo update-alternatives --query ovs-vswitchd
Name: ovs-vswitchd
Link: /usr/sbin/ovs-vswitchd
Status: manual
Best: /usr/lib/openvswitch-switch/ovs-vswitchd
Value: /usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk
Alternative: /usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk
Priority: 50
Alternative: /usr/lib/openvswitch-switch/ovs-vswitchd
Priority: 100
sudo apt install --reinstall openvswitch-switch-dpdk
sudo update-alternatives --query ovs-vswitchd
Name: ovs-vswitchd
Link: /usr/sbin/ovs-vswitchd
Status: auto
Best: /usr/lib/openvswitch-switch/ovs-vswitchd
Value: /usr/lib/openvswitch-switch/ovs-vswitchd
Alternative: /usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk
Priority: 50
Alternative: /usr/lib/openvswitch-switch/ovs-vswitchd
Priority: 100
+ [Regression Potential]
+ Low - the fix was been in Ubuntu since Eoan and the maintainer script usage
of update-alternatives was broken since the -dpdk binary was introducted.
- [Regression Potential]
+ The main challenge is actually upgrading a -dpdk installation without
+ disabling the -dpdk binary with the existing prerm script.
+
+ To avoid this:
+
+ sudo sed -i "/update-alternatives/d" /var/lib/dpkg/info/openvswitch-
+ switch-dpdk.prerm
+
+ before completing the package upgrade thus ensuring the -dpdk version of
+ the binary never gets removed.
[Original Bug Report]
Upgrading and existing openvswitch installation which has been manually
configured to use the DPDK alternative binary using:
sudo update-alternatives --set ovs-vswitchd /usr/lib/openvswitch-
switch-dpdk/ovs-vswitchd-dpdk
results in the ovs-vswitchd being reset back to 'auto':
Setting up openvswitch-switch (2.11.0-0ubuntu2~cloud0) ...
update-alternatives: using /usr/lib/openvswitch-switch/ovs-vswitchd to
provide /usr/sbin/ovs-vswitchd (ovs-vswitchd) in auto mode
The prerm maintainer scripts always remove the alternatives, which
purges any manual setting done of the binaries.
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https://bugs.launchpad.net/bugs/1836713
Title:
upgrade of openvswitch packages resets alternative binaries to auto
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