external tape drive

[haeman]

I have a external tape drive that connect to the server , I can see the tape drive via my backup software , but when I try to tar file to /dev/st0 , but it not work , what is the device name ( eg. /dev/st0 , /dev/st1 or something ) that the external tape drive atached ? how can i check it ? thx

[Ivan Ferreira]

The file should be /dev/st0, what is the output of?:

mt -f /dev/st0 status

¿What is the error you get when you try to tar to the device?

¿What kind of device is it?

[yuk1]

thx reply ,

in my system , no /dev/st0 , what device path should I mount to ? thx

#ls /dev/st0
ls: /dev/st0: No such file or directory

[Hemmetter]

Hi haeman,

What Linux version do you use?
What type is your tape, how is it connected?
Is "st" loaded, check with "lsmod"
Any /var/log/messages?
What says dmesg?

Does it show up in "lsscsi" and /proc/scsi/scsi?

Thats the first points to check.

rgds
HGH

[haeman]

RH ,

SDLT via scsi

# lsmod |grep st
st 31524 0 (unused)
scsi_mod 115496 5 [sg st aic7xxx ips sd_mod]

# messages |grep tape
Aug 21 09:04:01 ORA kernel: Attached scsi tape st0 at scsi1, channel 0, id
5, lun 0

#dmesg |grep tape
Attached scsi tape st0 at scsi1, channel 0, id 5, lun 0

but the st0 is not present , can advise what is it ? thx


# ls /dev/st0
ls: /dev/st0: No such file or directory

[Hemmetter]

Hi again haeman,

What Linux/Kernel version is it?

Can do do a "rescan-scsi-bus.sh" if available ( www.garloff.de/kurt/linux/rescan-scsi-bus.sh)

or
# echo "- - - " > /sys/class/scsi_host/host${i}/scan

with ${i} the appropriate number for your scsi-bus.



rgds
HGH

[Deepak Kr]

Hi,

As asked above provide us version of OS and which Linux distribution are you using here.

Also what is backup software and what you see in that for verifying tape drive.