Monday, November 22, 2010

Backup with tar and mt (On tape Drive)

Rewind tape drive: 

# mt -f /dev/st0 rewind

Backup directory /www and /home with tar command (z - compressed):
# tar -czf /dev/st0 /www /home


Find out what block you are at with mt command:
# mt -f /dev/st0 tell


Display list of files on tape drive:
# tar -tzf /dev/st0


Restore /www directory:
# cd /
# mt -f /dev/st0 rewind
# tar -xzf /dev/st0 www


Unload the tape:
# mt -f /dev/st0 offline


Display status information about the tape unit:
# mt -f /dev/st0 status


Erase the tape:
# mt -f /dev/st0 erase

You can go BACKWARD or FORWARD on tape with mt command itself:
(a) Go to end of data:
# mt -f /dev/nst0 eod


(b) Goto previous record:
# mt -f /dev/nst0 bsfm 1


(c) Forward record:
# mt -f /dev/nst0 fsf 1





Regards,
Sukhwinder Singh.

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