Hello All

Can any one suggest on it and how to control scrub and deep scrubs not to
impact IO or clients.
Also, how to control that both scrub doesn’t run at one time or deep should
have lower impact then normal scrubs other than scheduling and what are the
parameters?

Regards
Dev

On Mon, 12 May 2025 at 9:14 AM, Devender Singh <deven...@netskrt.io> wrote:

> Hello All
>
>
> Need some help to tune scrubbing.
>
> 1. *How to control not run scrubbing and deep scrubbing together and
> which one should be started first?*
>
> * 124  active+clean+remapped*
>
> *             35   active+clean+scrubbing+deep*
>
> *             24   active+clean+scrubbing*
>
> *             4    active+clean+remapped+scrubbing+deep*
>
>
> *I have **osd_max_scrubs =1 but still impacting IO’s special when both
> are running together. *
>
>
>
> *2. When changing some priorities to not to impact IO’s, Setting higher
> number is lower priority or it works differently with different kind of
> priority parameters?*
>
>   * What is the standard of defining high and low priority(higher number
> is lower priority or lower number is lower priory etc...) on CEPH?*
>
>
> * eg: **osd_requested_scrub_priority - 170 (120 default)*
>
> *Eg: **ceph config set osd osd_scrub_event_cost 8192 (4096 default)*
>
>
>
> *Regards*
>
> *Dev*
>
>
>
>
>
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