On Tue, Jul 16, 2024 at 01:57:36PM +0530, Vipul Ashri wrote:
> This specific Netdev leak is causing us stale VHU entries, where it
> is showing false limit reaching maximum and preventing us to create
> new entries for us. This leak can impact other nics also.
>
> Steps to reproduce,
> While running a test with a continous VM creation/deletion using an
> orchestration script with-in cloud environment. In parallel we have
> some monitoring script calling ovs-appctl dpctl/show stats commands
> every minute.
>
> Root-cause analysis,
> During VHU port delete, one of netdev references were not reduced to
> 0 as show_dpif call has not given-up the reference back or doing bad
> cleanup. This pending deference preventing VHU deletion sequence, this
> is found to be one of corner case inside dpctl code which results in
> leaking up netdev which ultimately results in stale VHU entry. After
> fixing this problematic cleanup, issue is not seen.
>
> Fixes: fceef2095222 ("dpctl: add ovs-appctl dpctl/* commands to talk to
> dpif-netdev")
> Signed-off-by: Vipul Ashri <vipul.as...@ericsson.com>
Acked-by: Simon Horman <ho...@ovn.org>
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