Comment 5 for bug 2066286

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Ninoy Radhakrishnan (nradhakrishnan) wrote : Re: [Bug 2066286] Multipath 0.8.8 reports High CPU usage when having Lun's using Multipath

Hi Mitchell,

Responding to the last 3 emails you have send,

1. I am not sure about the SRU process
2. If you can apply the upstream patch to the stable release, yes, I can test it out. This will be great.
3. Ubuntu 20.04(focal) , yes agree the highest Multipath version is 0.8.3-1. The number of times, seen with that is less compared to Ubuntu 22.04(jammy with Multipath 0.8.8

Thanks,
Ninoy Radhakrishnan (he/him/his)
DevOps Solutions Architect
+1 201 285 9812

> On May 21, 2024, at 1:20 PM, Mitchell Dzurick <email address hidden> wrote:
>
> Also clarifying question - it is mentioned that focal (Ubuntu 20.04)
> needs this fix, however focal has version 0.8.3-1ubuntu2.3 in our
> archives (0.8.3-1ubuntu2.4 is in proposed currently).
>
> This bug supposedly effects version 0.8.8 through 0.9.3, so therefore
> nothing is needed on Focal. Have you seen issues with high cpu usage on
> Focal too?
>
> ** Changed in: multipath-tools (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/2066286
>
> Title:
> Multipath 0.8.8 reports High CPU usage when having Lun's using
> Multipath
>
> Status in multipath-tools package in Ubuntu:
> Incomplete
>
> Bug description:
> When Multipath 0.8.8 to 0.9.3 is used with Ubuntu20.04 and especially
> with 22.04, showing High CPU usage for systemd and multipathd
> processes, making node unresponsive. Multipath 0.9.4 works just fine.
> But as there is no official multipath package for 0.9.4 with Ubuntu
> 20.04/22.04, need to compile.
>
> The ask here is to have 0.9.4 available for Ubuntu 20.04 / 22.04.
> Currently its available for 23.x versions.
>
> I was able to use the Mantic package repo and install with 22.04 and
> make it work.
>
>
> Redhat fixed the same issue and below is the link,
>
> Redhat Bug description: https://access.redhat.com/solutions/7059978
>
> May be below is the code path having issue
> Seems this impacting 0.8.8 till 0.9.3.
> https://github.com/opensvc/multipath-tools/pull/31/commits/38851dcaafe31073655761228db7f09ffc5a9a58
>
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