From mboxrd@z Thu Jan 1 00:00:00 1970 From: William Lee Irwin III Subject: Re: Adaptec 39160 / Yamaha CRW8424S CD burning Date: Mon, 13 Jan 2003 01:16:35 -0800 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20030113091635.GC9558@holomorphy.com> References: <20030113071543.GA9558@holomorphy.com> <3E22738D.3020000@torque.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <3E22738D.3020000@torque.net> List-Id: linux-scsi@vger.kernel.org To: Douglas Gilbert Cc: linux-scsi@vger.kernel.org, gibbs@scsiguy.com On Mon, Jan 13, 2003 at 07:06:37PM +1100, Douglas Gilbert wrote: > Depending on which version of cdrecord you are using, > cdrecord will get to the SCSI Yamaha burner via: > - scsi generic (sg) device (probably /dev/sg1) > - or directly to /dev/scd0 (via the SG_IO ioctl in > the block layer) > - or via /dev/scd0 using the CDROM_PACKET_COMMAND > ioctl > Could you determine which one is happening? If the > sg route is being used then the individual SCSI > commands can be seen by observing 'cat /proc/scsi/sg/debug' > while the burn is in progress. What version of cdrecord > are you using and what does its output look like? I'm trying Jens' patched cdrecord from people/axboe/tools/ on kernel.org and got: $ cat /proc/scsi/sg/debug dev_max(currently)=6 max_active_device=3 (origin 1) def_reserved_size=32768 >>> device=sg1 scsi0 chan=0 id=3 lun=0 em=0 sg_tablesize=128 excl=0 FD(1): timeout=20500ms bufflen=129024 (res)sgat=4 low_dma=0 cmd_q=1 f_packid=0 k_orphan=0 closed=0 rb>> act: id=0 blen=63504 t_o/elap=40000/15ms sgat=2 op=0x2a $ cat /proc/scsi/sg/debug dev_max(currently)=6 max_active_device=3 (origin 1) def_reserved_size=32768 >>> device=sg1 scsi0 chan=0 id=3 lun=0 em=0 sg_tablesize=128 excl=0 FD(1): timeout=20500ms bufflen=129024 (res)sgat=4 low_dma=0 cmd_q=1 f_packid=0 k_orphan=0 closed=0 rb>> act: id=0 blen=63504 t_o/elap=40000/11ms sgat=2 op=0x2a $ cat /proc/scsi/sg/debug dev_max(currently)=6 max_active_device=3 (origin 1) def_reserved_size=32768 >>> device=sg1 scsi0 chan=0 id=3 lun=0 em=0 sg_tablesize=128 excl=0 FD(1): timeout=20500ms bufflen=129024 (res)sgat=4 low_dma=0 cmd_q=1 f_packid=0 k_orphan=0 closed=0 rb>> act: id=0 blen=63504 t_o/elap=40000/65ms sgat=2 op=0x2a