Subject: Re: Question re some improvements in NetBSD 1.6
To: <>
From: Ignatios Souvatzis <ignatios@theory.cs.uni-bonn.de>
List: netbsd-users
Date: 06/27/2002 10:23:39
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On Thu, Jun 27, 2002 at 12:58:26AM +0100, Iggy Drougge wrote:
> Thomas Mueller skrev:
>=20
> >Other feature of interest, which I asked about
> >though not specifically in connection with NetBSD 1.6, is support for ha=
rd
> >disks having sector size !=3D 512 bytes, such as the Fujitsu DynaMO, who=
se
> >sector size is 2048 bytes, and supported by newer versions of Linux.
>=20
> MOs are usually available in both plain 2048 and 512 byte block sizes. Is=
 the
> Fujitsu an exception?

no. for 90mm drives:

128MB, 230MB, 540MB media are  512 bytes/sector
640MB, 1.3GB, 2.3GB media are 2048 bytes/sector

The DynaMO _drive_ is no exception here - you get 512 bytes/sector with the
smaller media.

As for the support of 2048 bytes/sector media with our native filesystem,=
=20
see the recent work in progress by Trevin Beattie (discussion on tech-kern).

In short:

media			filesystem	dump,tar

128M, 230M, 540M	yes		yes
640M, 1.3G, 2.3G	not yet		yes

I'm using 230 MB for filesystems occasionally, and I'm using 640M media
for backups daily at home.

Regards,
	-is

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