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Use persistent Logical Switch Ports with OVN - #3587
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bensmrs
approved these changes
Jul 6, 2026
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Signed-off-by: Stéphane Graber <stgraber@stgraber.org> Sponsored-by: Magalu Cloud (https://magalu.cloud)
Signed-off-by: Stéphane Graber <stgraber@stgraber.org> Sponsored-by: Magalu Cloud (https://magalu.cloud)
Signed-off-by: Stéphane Graber <stgraber@stgraber.org> Sponsored-by: Magalu Cloud (https://magalu.cloud)
Signed-off-by: Stéphane Graber <stgraber@stgraber.org> Sponsored-by: Magalu Cloud (https://magalu.cloud)
Signed-off-by: Stéphane Graber <stgraber@stgraber.org> Sponsored-by: Magalu Cloud (https://magalu.cloud)
Signed-off-by: Stéphane Graber <stgraber@stgraber.org> Sponsored-by: Magalu Cloud (https://magalu.cloud)
This handles upgrading from the current setup where the port will be missing on a clean start as well as make Incus tolerant to missing/deleted switch ports in the future. Signed-off-by: Stéphane Graber <stgraber@stgraber.org> Sponsored-by: Magalu Cloud (https://magalu.cloud)
Signed-off-by: Stéphane Graber <stgraber@stgraber.org> Sponsored-by: Magalu Cloud (https://magalu.cloud)
Signed-off-by: Stéphane Graber <stgraber@stgraber.org> Sponsored-by: Magalu Cloud (https://magalu.cloud)
stgraber
enabled auto-merge
July 6, 2026 13:20
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Up until now Incus would create and delete OVN ports at every NIC device start/stop event.
This would keep OVN looking very clean with only active instances getting database records, but it also comes with some annoying downsides.
The main one being that when using dynamic allocation, restarting a bunch of instance makes it unlikely that they'll all get their previous IP back. Incus has a volatile key to try to restore those addresses on a best-effort basis but when dealing with a large amount of instances coming up at once, a bunch are bound to change addresses.
Instead, we're now keeping an OVN LSP for the instance's lifetime but marking it as disabled when the instance is stopped.