[Centos] Re: centos] Tape drive problems
R P Herrold
herrold at owlriver.com
Sun May 30 07:42:11 UTC 2004
On Wed, 26 May 2004, syv wrote:
> I have been googling, and can't find anything that will help me:
>
> mt -f /dev/st0 status
> /dev/st0: No such device or address
> 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
>
> blk: queue d3e53014, I/O limit 4095Mb (mask 0xffffffff)
> (scsi0:A:11): 80.000MB/s transfers (40.000MHz, offset 32, 16bit)
> Vendor: EXABYTE Model: VXA-2 Rev: 100E
> Type: Sequential-Access ANSI SCSI revision: 02
> blk: queue d37a7e14, I/O limit 4095Mb (mask 0xffffffff)
> st: Version 20030406, bufsize 32768, max init. bufs 4, s/g segs 16
> Attached scsi tape st0 at scsi0, channel 0, id 11, lun 0
> scsi : 0 hosts left.
> Here is the output of lsmod:
> st 31716 0 (autoclean)
The problem is that the SCSI module is being cleaned out in
the interval between booting and use of the tape =-- add the
driver to
/etc/modules.conf
and all should be fine. I have this at one site:
[herrold at server4 herrold]$ lsmod | grep x
ext3 68960 9
jbd 51720 9 [ext3]
aic7xxx 134560 0
scsi_mod 110876 4 [st megaraid aic7xxx sd_mod]
[herrold at server4 herrold]$ cat /etc/modules.conf
alias parport_lowlevel parport_pc
alias eth0 eepro100
alias eth1 eepro100
alias scsi_hostadapter megaraid
alias scsi_hostadapter aic7xxx
[herrold at server4 herrold]$
In this case, the Raid array is on the megaraid driver, and
the tape is a DLT all alone (in a Dell 4350) on the Adaptec
controller. It has not been fired since Wednesday, but as I
loaded the module in /etc/modules.conf it was not 'cleaned'
out.
- Russ Herrold
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