(2930??) SCSI device access in 2.4.22-1.2149 (was Re: "No such device or address" for /dev/st0

Charlie Sauer sauer at technologists.com
Thu Feb 5 15:42:39 UTC 2004


Jeff Vian wrote:

>Look in dmesg and/or /var/log/messages to see what the device is called
>when the system boots.  Then use that to access it.

I don't see anything relevant in dmesg at all in dmsg. This is what I see
that is relevant in /var/log/messages:
...
Feb  5 09:26:58 mail kernel: SCSI subsystem driver Revision: 1.00
Feb  5 09:26:58 mail kernel: PCI: Found IRQ 10 for device 00:0f.0
Feb  5 09:26:58 mail kernel: PCI: Sharing IRQ 10 with 01:00.0
Feb  5 09:26:58 mail kernel: scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA
DRIVER, Rev 6.2.36
Feb  5 09:26:58 mail kernel:         <Adaptec 2930CU SCSI adapter>
Feb  5 09:26:58 mail kernel:         aic7860: Ultra Single Channel A, SCSI
Id=7, 3/253 SCBs
Feb  5 09:26:59 mail kernel:
Feb  5 09:26:59 mail kernel: blk: queue de815414, I/O limit 4095Mb (mask
0xffffffff)
Feb  5 09:26:59 mail kernel: (scsi0:A:2): 10.000MB/s transfers (10.000MHz,
offset 15)
Feb  5 09:26:59 mail kernel:   Vendor: HP        Model: CD-Writer+ 9200
Rev: 1.0e
Feb  5 09:26:59 mail kernel:   Type:   CD-ROM
ANSI SCSI revision: 04
Feb  5 09:26:59 mail kernel: blk: queue df273e14, I/O limit 4095Mb (mask
0xffffffff)
Feb  5 09:26:59 mail kernel: Attached scsi CD-ROM sr0 at scsi0, channel 0,
id 2, lun 0
Feb  5 09:26:59 mail kernel: sr0: scsi3-mmc drive: 32x/32x writer cd/rw
xa/form2 cdda tray
Feb  5 09:26:59 mail kernel: Uniform CD-ROM driver Revision: 3.12
Feb  5 09:26:59 mail kernel: scsi : 0 hosts left.
,,,

>Also look in /etc/fstab as another pointer.

All that /etc/fstab has is /dev/cdrom, which is a symlink to /dev/scd0.

Here is the relevant part I find in /etc/sysconfig/hwconf

-
class: CDROM
bus: SCSI
detached: 0
device: scd0
driver: ignore
desc: "Hp CD-Writer+ 9200"
host: 0
id: 2
channel: 0
lun: 0
generic: sg0
-

That is where I found sg0 and why I tried dd from /dev/sg0.

Charlie







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