Date: Mon, 2 Jun 2014 18:12:50 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Mark Felder" <feld@freebsd.org>, "Nathan Whitehorn" <nwhitehorn@freebsd.org> Cc: freebsd-fs@freebsd.org, FreeBSD Hackers <freebsd-hackers@freebsd.org>, Matthew Ahrens <mahrens@delphix.com>, owner-freebsd-fs@freebsd.org Subject: Re: fdisk(8) vs gpart(8), and gnop Message-ID: <FADF26C2D490437483E81496103CF0A5@multiplay.co.uk> References: <20140601004242.GA97224@bewilderbeast.blackhelicopters.org> <CAOjFWZ5N9FGwgSz0_YFNQjavzdJDitRn52VKn4ipW1ddj6-weQ@mail.gmail.com> <BCA9F5D6-3925-4E7E-9082-128652508305@FreeBSD.org> <3D6974D83AE9495E890D9F3CA654FA94@multiplay.co.uk> <538B4CEF.2030801@freebsd.org> <1DB2D63312CE439A96B23EAADFA9436E@multiplay.co.uk> <538B4FD7.4090000@freebsd.org> <CAJjvXiFAX7N-30g0OZ6idqLnyJww5dsyhGfLj6nYwKs9Xp--1g@mail.gmail.com> <538C9207.9040806@freebsd.org> <c8ff89dc1993a3c6eb3daed97b247b13@mail.feld.me>
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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
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