Subject: Re: CHanges to sd and cd drivers
To: Manuel Bouyer <email@example.com>
From: Soren S. Jorvang <firstname.lastname@example.org>
Date: 01/20/1999 21:10:48
On Wed, Jan 20, 1999 at 04:30:49PM +0100, Manuel Bouyer wrote:
> I'd like to make a few changes to the sd and cd drivers
> (patches included below):
> - don't reset the SDEV_MEDIA_LOADED flag when the last partition of a sd device
> is closed, but only when we believe the media has changed (cd already behaves
> this way). The reset of SDEV_MEDIA_LOADED is done in the generic error
> handler. This change allows to load a in-memory disklabel, and then
> mount a partition. For now one would have to use a kludge to keep a parition
> open while changing the disklabel, otherwise it would get lost when
> 'disklabel' closes the raw device.
> - allows the raw partition of a sd or cd device to be opened even if
I like this (or anything similar that allows operation on devices without
This reminds me of a related issue.
The current code return EIO for both 'no media' and 'media error's.
I noticed because I have '<SyQuest, EZ135S, 1_13> SCSI2 0/direct removable' that
makes the i386 findroot() print 'findroot: can't open dev sd0a (5)' during
Should 'no media' and 'media error' perhaps return different errors?