Re: Downgrading the osdmap

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Great!

I have raised an Enhancement tracker for a patch to make the balancer
smarter about alerting users on this. You are welcome to follow it or add
any comments: https://tracker.ceph.com/issues/70615

Thanks,
Laura

On Sat, Mar 22, 2025 at 6:53 AM Marek Szuba <scriptkiddie@xxxxx> wrote:

> On 2025-03-21 18:37, Laura Flores wrote:
>
> > If you have been using the read balancer, you may see `pg_upmap_primary`
> > mappings in the osdmap despite changing the mode back to just
> > upmap. Changing the mode to "upmap" only means that no further read
> > balancing will occur, so at this time, the mappings need to be manually
> > cleared if you don't want them anymore.
>
> Ah, that explains it! I have indeed seen such mappings in the osdmap but
> didn't realise they wouldn't go away on its own.
>
> > To remove the mappings, first run:
> [...]
>
> Done, and afterwards I was indeed able to switch back to Luminous
> compatibility. Thank you for your help!
>
> --
> MS
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>
>

-- 

Laura Flores

She/Her/Hers

Software Engineer, Ceph Storage <https://ceph.io>

Chicago, IL

lflores@xxxxxxx | lflores@xxxxxxxxxx <lflores@xxxxxxxxxx>
M: +17087388804
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