Date: Sun, 1 Jun 2014 16:52:27 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Mark Felder" <feld@freebsd.org>, "Freddie Cash" <fjwcash@gmail.com> Cc: hackers@freebsd.org, "Michael W. Lucas" <mwlucas@michaelwlucas.com> Subject: Re: fdisk(8) vs gpart(8), and gnop Message-ID: <3D6974D83AE9495E890D9F3CA654FA94@multiplay.co.uk> References: <20140601004242.GA97224@bewilderbeast.blackhelicopters.org> <CAOjFWZ5N9FGwgSz0_YFNQjavzdJDitRn52VKn4ipW1ddj6-weQ@mail.gmail.com> <BCA9F5D6-3925-4E7E-9082-128652508305@FreeBSD.org>
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----- Original Message ----- From: "Mark Felder" <feld@freebsd.org> > On May 31, 2014, at 20:57, Freddie Cash <fjwcash@gmail.com> wrote: > >> There's a sysctl where you can set the minimum ashift for zfs. Then you >> never need to use gnop. >> >> I believe it's part of 10.0? > > I've not seen this yet. What we need is to port the ability to set ashift at pool creation time: > > $ zpool create -o ashift=12 tank mirror disk1 disk2 mirror disk3 disk4 > > I believe the Linux zfs port has this functionality now, but we still do not. We don't have that direct option yet but you can achieve the same thing by setting: vfs.zfs.min_auto_ashift=12 Regards Steve
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