On Fri, Jan 09 2004, Nigel Kukard wrote:
Hrmmm, I have an LG 52/24/52 drive... i tried adding the mrw patch, but i seem to get syslog messages saying the following when i echo 1 > /dev/sr1
Jan 9 10:33:57 nigel-lappy kernel: blk: queue d42afe18, I/O limit 4095Mb (mask 0xffffffff) Jan 9 10:33:57 nigel-lappy kernel: Vendor: HL-DT-ST Model: CD-RW GCE-8520B Rev: 1.02 Jan 9 10:33:57 nigel-lappy kernel: Type: CD-ROM ANSI SCSI revision: 02 Jan 9 10:33:57 nigel-lappy kernel: blk: queue d42afc18, I/O limit 4095Mb (mask 0xffffffff) Jan 9 10:33:57 nigel-lappy kernel: Attached scsi CD-ROM sr1 at scsi1, channel 0, id 0, lun 0 Jan 9 10:33:57 nigel-lappy kernel: sr1: scsi3-mmc drive: 40x/40x writer cd/rw xa/form2 cdda tray Jan 9 10:33:57 nigel-lappy kernel: scsi singledevice 1 0 1 0 Jan 9 10:33:57 nigel-lappy kernel: scsi singledevice 1 0 2 0 Jan 9 10:33:57 nigel-lappy kernel: scsi singledevice 1 0 3 0 Jan 9 10:33:57 nigel-lappy kernel: scsi singledevice 1 0 4 0 Jan 9 10:33:57 nigel-lappy kernel: scsi singledevice 1 0 5 0 Jan 9 10:33:57 nigel-lappy kernel: scsi singledevice 1 0 6 0 Jan 9 10:33:57 nigel-lappy kernel: scsi singledevice 1 0 7 0 Jan 9 10:34:35 nigel-lappy kernel: cdrom: bash opening for WRITE Jan 9 10:34:35 nigel-lappy kernel: sr1: disc change detected. Jan 9 10:34:35 nigel-lappy kernel: cdrom: sr1: mrw address space GAA selected
That's a bug in my older version, it's supposed to select DMA (defect managed area). Thanks to Peter for spotting that, weird mistake.
Jan 9 10:34:35 nigel-lappy kernel: cdrom open: mrw_status 'not mrw'
You need to initiate the background format first with the cdmrw tool. I've attached it for reference. -- Jens Axboe