Re: CD writing in future Linux (stirring up a hornets' nest)

From: Joerg Schilling
Date: Thu Jan 26 2006 - 09:05:45 EST


Matthias Andree <matthias.andree@xxxxxx> wrote:

> Joerg Schilling schrieb am 2006-01-26:
>
> > Even with /dev/scg* on Solaris or with CAM on FreeBSD, you open a device.
> > But this is not a /dev/ entry for a high level device like a disk, it is
> > a SCSI nexus device that allows you to send SCSI commands on any SCSI
> > transport.
>
> As long as the device you open allows you to send SCSI commands on any
> suitable (not just SCSI) transport, why bother?

If you open e.g. /dev/cam or /dev/scg?, you open device that is not related
to a high level service like /dev/hd* and this unfortunately is unable to talk
to other devices in the same entity (e.g. ATAPI tapes).

With /dev/cam or similar you get a single handle for a group of devices that
than are addressed via something very similar to dev=b,t,l

Jörg

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