zfs scrub enable by default

[Walter Cramer]

Assuming a fairly-idle system, or one with a tiny zpool - scrubs from 
'periodic daily' can work fine.

In cases where that assumption is false - the resources consumed by an 
hours-long scrub, slowing down a system which people expect to be "as 
responsive as it usually it"...

Our defaults should try to minimize the nasty surprises.

-Walter


On Mon, 3 Aug 2020, Steve Wills wrote:

> Hi,
>
> I wonder why we don't enable zfs periodic scrub by default?
>
> https://svnweb.freebsd.org/base/head/usr.sbin/periodic/periodic.conf?view=markup#l162
>
> Anyone happen to know?
>
> Thanks,
> Steve
>
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