Date: Sun, 28 Mar 2010 21:53:44 +0400 From: Alexey Tarasov <me@lexasoft.ru> To: Thomas Zander <thomas.e.zander@googlemail.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS raidz and 4k sector disks Message-ID: <A4F324C1-FD40-46D1-905D-6D3EEEB1CF05@lexasoft.ru> In-Reply-To: <786602c61003280949s15782d2bh82e2f8dd33a31d88@mail.gmail.com> References: <DEB8C86C-A672-4E61-B42F-630C26164DED@lexasoft.ru> <honbv1$pm4$1@dough.gmane.org> <492FB7C5-1B48-46BA-B63F-E7CBF7A0A195@lexasoft.ru> <786602c61003280949s15782d2bh82e2f8dd33a31d88@mail.gmail.com>
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On 28.03.2010, at 20:49, Thomas Zander wrote:
> On Sun, Mar 28, 2010 at 15:03, Alexey Tarasov <me@lexasoft.ru> wrote:
>> According to mailing lists, these drives can't be configured to =
present 4k sectors to OS.
>=20
> Maybe that's a dumb idea, but I am curious.
> As far as I understand, the following points apply:
> - EARS and RAIDZ is slow, but
> - if you make ZFS aware of the 4k sector size (gnop), performance is =
okay
>=20
> If so, what happens if you configure geli for the whole drive with 4k
> sectors? Maybe you get AES-128 for free :-)
What do you mean "for free"? =3D)
--
Alexey Tarasov
(\__/)=20
(=3D'.'=3D)=20
E[: | | | | :]=D0=97=20
(")_(")
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