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Bug 2125310

Summary: Automatic propagation of logical router LBs to a logical switch doesn't work with LB groups.
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Ilya Maximets <i.maximets>
Component: ovn22.06Assignee: lorenzo bianconi <lorenzo.bianconi>
Status: CLOSED CURRENTRELEASE QA Contact: ying xu <yinxu>
Severity: unspecified Docs Contact:
Priority: medium    
Version: FDP 22.HCC: ctrautma, jiji, jishi, lorenzo.bianconi, mmichels
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Last Closed: 2023-03-13 07:19:29 UTC Type: Bug
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Description Ilya Maximets 2022-09-08 15:10:26 UTC 
New configuration option NB_Global:install_ls_lb_from_router was added
in BZ2043543.  But the implementation in northd only cycles across
load balancers directly attached to a logical router and doesn't take
into account load balancers from LB groups attached to that router.

Found by code inspection.

build_lswitch_lbs_from_lrouter() should iterate over load balancer groups
as well.

It's also worth noting that the function has a potential to become a
huge performance bottleneck due to its quadratic complexity.  It might
make sense to re-think the implementation as well while fixing the
LB group problem.
Comment 1 lorenzo bianconi 2022-09-14 12:43:55 UTC 
upstream patch: https://patchwork.ozlabs.org/project/ovn/patch/1326d566a659628a5118cf47160cb8244e31c648.1663159274.git.lorenzo.bianconi@redhat.com/