Subject: Re: wedges and DEV_BSIZE (Was Re: removing VOPs)
To: Jason Thorpe <firstname.lastname@example.org>
From: Ignatios Souvatzis <email@example.com>
Date: 10/10/2005 20:40:56
On Mon, Oct 10, 2005 at 10:47:28AM -0700, Jason Thorpe wrote:
> On Oct 10, 2005, at 10:09 AM, SODA Noriyuki wrote:
> >>>>>>On Mon, 10 Oct 2005 09:21:52 -0700, Chuck Silvers
> >>>>>><firstname.lastname@example.org> said:
> >>all of the devices that I know of with such restrictions on
> >>writing have
> >>a sector size of 512 bytes or larger, so this isn't an issue in
> >Well, some older pc98 uses 256bytes/sector.
> >Of course, currently pc98 isn't supported by NetBSD, though...
> Older HP-IB drives also had 256 bytes/sector. The hp300 port's rd(4)
> driver does all of the necessary fiddling. It only matters if you
> have file systems laid down on the disk that don't have 512-byte
> alignment, which I have never encountered in the wild.
OS/9's "RBF" filesystem uses 256 byte sectors, and can be layed out with
256 byte granularity.
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