topic Re: How do you use tar for n/w backup in Operating System - Linux

How do you use tar for n/w backup

sreekanthtm — Wed, 26 Jul 2006 03:07:36 GMT

what is the command to take backup using tar
Iam connected to the server using telnet

Tell me commands for both conditons

1. If the tape device is connected localy to the server
2. If the tape device is connected to another system on the same n/w

Re: How do you use tar for n/w backup

Alan_152 — Thu, 27 Jul 2006 09:45:16 GMT

For #1, the syntax is "tar cvf /dev/tape-device /filesystem"

For #2, the tar syntax is the same, but you 1st have to rmount the remote tape drive.

Re: How do you use tar for n/w backup

Ivan Ferreira — Thu, 27 Jul 2006 10:45:38 GMT

I will suggest the use of "star" instead of tar. It's faster and more easy for remote backups.

With tar

Local backups:

Create
tar cvf /dev/st0 directory directory file ....

List
tar tvf /dev/st0

Extract

tar xvf /dev/st0

Remote backups

Create
tar cvf - | ssh remotehost dd of=/dev/st0

List
ssh remotehost dd if=/dev/st0 | tar tvf -

Extract

ssh remotehost dd if=/dev/st0 | tar xvf -

Using star

Local backups:

star -cv f=/dev/st0 directory directory files ...

Remote backups:

env RSH=/usr/bin/ssh star -cvM f=user@host.dominio:/dev/st0 directory directory files ...

Re: How do you use tar for n/w backup

sreekanthtm — Fri, 28 Jul 2006 01:24:10 GMT

How can we mount remote tape device
Pls give Syntax

Rgds
Sreekanth