From owner-freebsd-hackers@FreeBSD.ORG  Mon Jun  2 17:12:52 2014
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From: "Steven Hartland" <killing@multiplay.co.uk>
To: "Mark Felder" <feld@freebsd.org>,
 "Nathan Whitehorn" <nwhitehorn@freebsd.org>
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Subject: Re: fdisk(8) vs gpart(8), and gnop
Date: Mon, 2 Jun 2014 18:12:50 +0100
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Cc: freebsd-fs@freebsd.org, FreeBSD Hackers <freebsd-hackers@freebsd.org>,
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----- Original Message ----- 
From: "Mark Felder" <feld@freebsd.org>


> On 2014-06-02 10:02, Nathan Whitehorn wrote:
>> 
>> My bigger concern is this pool upgrade one -- what if someone puts in
>> a 4K disk in the future?
> 
> This is a concern of mine, and I sort of wish we did 4k by default and 
> forced people to override if they want 512b or something else.

That is exactly why we enforce min 4k everywhere here too, but its not
for everyone which is why I stuck to 512b default when I added it.

I guess the big question is:

Is future compatibility vs performance the right way to go for the default
as those what want the absolute best performance could always reduce the
value prior to creating / added top level vdevs?

    Regards
    Steve