Tape backup using tar

[Stuart Bailey]

> First, check your dmesg log for the device being used for the tape
> drive?  I'm thinking maybe they don't have a SCSI tape driver being
> loaded to create the device.
> Do a lsmod and look for the st module.
Ok, the st module is loaded. I have tried unloading and reloading it- nthis works fine. However, /dev/st0 is not created.

After reboot, I have to create /dev/st0 manually again since it was not created during the boot process. Now  created it, the backup using tar is running fine.
But why did /dev/st0 not get created.

dmesg shows (extract):

...
SCSI subsystem initialized
ACPI: PCI Interrupt 0000:02:07.0[A] -> GSI 19 (level, low) -> IRQ 169
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
        <Adaptec 29160 Ultra160 SCSI adapter>
        aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
...
  Vendor: HP        Model: C7438A            Rev: V312
  Type:   Sequential-Access                  ANSI SCSI revision: 03
 target0:0:3: Beginning Domain Validation
WIDTH IS 1
(scsi0:A:3): 6.600MB/s transfers (16bit)
 target0:0:3: Domain Validation skipping write tests
(scsi0:A:3): 40.000MB/s transfers (20.000MHz, offset 32, 16bit)
 target0:0:3: Ending Domain Validation
st: Version 20050312, fixed bufsize 32768, s/g segs 256
Attached scsi tape st0 at scsi0, channel 0, id 3, lun 0
st0: try direct i/o: yes (alignment 512 B), max page reachable by HBA 1048575
...
st0: Block limits 1 - 16777215 bytes.

And lsmod shows:

...
st                     42593  2
...
aic7xxx               161141  1
scsi_transport_spi     23105  1 aic7xxx
sd_mod                 22721  0
scsi_mod              135561  4 st,aic7xxx,scsi_transport_spi,sd_mod


Any ideas why the node is not being created?

Many thanks.

Stuart
-- 
---------------------------------------
Stuart Bailey BSc (hons) CEng CITP MBCS
         LinuSoft (Proprietor)
           Linux Specialist
            (01953) 601294
            (07778) 383739
       http://www.linusoft.co.uk
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