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Message-ID: <38b2ab8a0804101205s1e0e4fa0l884286ec7ea9ccbd@mail.gmail.com>
Date: Thu, 10 Apr 2008 21:05:50 +0200
From: "Francis Moreau" <francis.moro@gmail.com>
To: "Mark Lord" <lkml@rtr.ca>
Subject: Re: Disk geometry from /sys
Cc: linux-kernel@vger.kernel.org
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Hi

On Wed, Apr 9, 2008 at 11:57 PM, Mark Lord <lkml@rtr.ca> wrote:
> > I'm trying to know the geometry of my hard disk from a bash script
> > and that's the reason I'm looking in /sys. The reason is that I'd like
> > to figure out the size of a cylinder without doing a
> > ioctl(bdev, HDIO_GETGEO, &geo)
> >
>
>  $ DEV=/dev/sda
>  $ GEOM="`/sbin/hdparm -g $DEV | awk '{print $3}'`"
>  $ echo $GEOM
>  19457/255/63
>  $
>

Sure and you could the same with fdisk, sfdisk, parted outputs...

But that wasn't my point, sorry if it wasn't clear.

I was actually wondering why /sys/block/sda exports a lot of disk
features but the disk geometry. I was wondering if somthing like

/sys/block/sda/geometry/heads

could be useful...

-- 
Francis