zfs scrub enable by default

[John Long]

On 05/08/2020 16:13, Alan Somers wrote:
> On Wed, Aug 5, 2020 at 10:06 AM John Long via freebsd-fs 
> <freebsd-fs at freebsd.org <mailto:freebsd-fs at freebsd.org>> wrote:
> 
>     On 05/08/2020 15:24, Alan Somers wrote:
>      > On Wed, Aug 5, 2020 at 9:22 AM John Long via freebsd-fs
>      > <freebsd-fs at freebsd.org <mailto:freebsd-fs at freebsd.org>
>     <mailto:freebsd-fs at freebsd.org <mailto:freebsd-fs at freebsd.org>>> wrote:

snipped

> Yeah.  I wouldn't recommend ever chaning the copies value from the 
> default.  If dedup is on (also not recommended), then it wouldn't make 
> sense to use multiple copies anyway.

Yeah that felt like a shoot self in ass opportunity but I never thought 
about it until this thread.

>  And if zfs encryption is on, then 
> you can't use multiple copies, because encryption repurposes some of the 
> block pointer's fields.
> -Alan

Last I looked ZFS on FreeBSD does not support encryption. But it is 
helpful to know that there is a technical issue in doing both.

Thank you for the info!

/jl