Quantum Tape Drive LTO-3 - Manual (Page 86)

Chapter 7 Troubleshooting Guide
Troubleshooting Suggestions
72 LTO-3 Tape Drive User’s Guide
Red Hat Linux 7
The tape driver for Red Hat Linux is called “
st
”. This driver is
automatically installed when Red Hat Linux is installed on your system.
When Red Hat Linux boots, the operating system recognizes the tape
drive and installs the tape drive as a device in the
/dev
directory. If this is
the first tape device in the
/dev
directory, the tape drive is known as
/dev/st0 or /dev/nst0
.
There are various ways to view the log files to see whether Linux
recognizes the tape drive. One method is to open a terminal window and
issue the following command from the root directory:
dmesg | grep SCSI
You may see output similar to:
(scsi0) found at PCI 0/16/0
You may also be able to use the command:
cat /proc/scsi/scsi
You may see output similar to:
Host: scsi0 Channel: 0 Id:6 Lun:00
Vendor: CERTANCE Model: ULTRIUM 3
Type: SequentialAccess ANSI SCSI Revision 04
You can also use a text editor to view the messages in the file
/var/log/
and
look for tape drive entries.
Sometimes a system may have multiple tape device names in the
/dev
directory and will not know which st number to use. To view the st
device number for your attached tape drive, use the command:
dmesg | grep tape
You should see output similar to:
Detected SCSI tape st0 and scsi0 . . .
Problems with
Tape Drive and
Cartridge
7
Tape will not Load into Tape Drive
1
Verify that the tape drive’s
Power
LED is illuminated and that all
other LEDs are off. If the
Power
LED is not illuminated, refer to the
procedures for troubleshooting LEDs under Computer Boots but
Does Not Recognize the Tape Drive to determine why it is not
illuminated.