Re: Interference of cdrskin and cdrecord operating on different drives
scdbackup@gmx.net wrote:
> Hi Joerg,
>
> i found that my program cdrskin keeps your program cdrecord
> from starting in a peculiar situation when both are used
> simultaneously on differend drives.
>
> Situation:
> cdrskin is in the process of burning on dev=0,0,0
> cdrecord shall perform -atip on dev=0,1,0
>
> With cdrecord of cdrtools-2.01.01a23-pre.tar.bz2
> (which reports "2.01.01a22"):
>
> $ cdrecord dev=0,1,0 -v -atip
> Cdrecord-ProDVD-Clone 2.01.01a22 (i686-pc-linux-gnu) Copyright (C) 1995-2006 Jörg Schilling
> TOC Type: 1 = CD-ROM
> scsidev: '0,1,0'
> scsibus: 0 target: 1 lun: 0
> cdrecord: Device or resource busy. Cannot open '/dev/sg0'. Cannot open SCSI driver.
> cdrecord: For possible targets try 'cdrecord -scanbus'.
> cdrecord: For possible transport specifiers try 'cdrecord dev=help'.
> $
It is obvious that opening the files with O_EXCL is not the right solution.
I am working with Sun on a better solution....
Note that Solaris did switch from the 1992 vold implementation to a dbus bases
implementation about 2 months ago. This dbus/hal based implementation does
already work better and more reliable than the current Linux implementation.
There will be new support for telling hal not to look at a specific drive and
to even unpount it to allow to do multi-session with volume management running.
I am in hope that we will be able to also find a way for cooperative "exclusive"
access to devices.
Jörg
--
EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
js@cs.tu-berlin.de (uni)
schilling@fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
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