Re: Deep-scrub much slower than HDD speed

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Den fre 28 apr. 2023 kl 14:51 skrev Niklas Hambüchen <niklas@xxxxxxxxxx>:
>
> Hi all,
>
> > Scrubs only read data that does exist in ceph as it exists, not every sector of the drive, written or not.
>
> Thanks, this does explain it.
>
> I just discovered:
>
> ZFS had this problem in the past:
>
> * https://utcc.utoronto.ca/~cks/space/blog/solaris/ZFSNonlinearScrubs?showcomments#comments

That one talks about resilvering, which is not the same as neither ZFS
scrubs nor ceph scrubs.
Resilvering is copying/moving/rewriting data, which scrubs are not.

-- 
May the most significant bit of your life be positive.
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