Re: Fita DAT Sony SDT9000

[Adriano Freitas <jaafreitas@yahoo.com>]

> 
>   Pressuponho que eu use algo como:
> 
>   tar -cvO backup.tar arquivo1.x arquivo2.y *.pl
> *.etc > /dev/st
> 
>   é isso? e como eu faço para enviar comandos para
> rebobinar, etc?
> 

	Nunca me aprofundei muito no uso da fita dat. Tem
programas como o taper que a gerenciam através de
front-ends. Mas o básico é você a usar como se fosse
uma "imagem". O 'tar' foi criado justamente para isso.
Sabendo o funcionamento básico do tar vc consegue usar
o mínimo de uma dat.

A seguir vai um MINI-MINI tutorial:

The tape device is /dev/st0, a SCSI tape drive.

To do backup we are using the tar command as follows.
Put the desired tape in the tape drive and use one
of the following:

(1) To initialize the tape (BEWARE: destroys previous
content)
with the contents of a directory <dir>:

   cd <parent-dir>
   tar cvf /dev/st0 <dir>

(2) To add new directories to the tape:
 
   cd <parent-dir>
   tar rvf /dev/st0 <dir>

(3) To restore a file or directory from the tape:

   cd <parent-dir>
   tar xvf /dev/st0 <dir>

The restoring parent-directory does not have to be the
same as the one used when doing the backup.  Hence, it
is possible to restore files/dirs in other locations.

(4) To view contents of the tape:

   tar tvf /dev/st0


All these command should be run as root.  Ordinary
users
do not have access to the tape drive.

It is not recommended to try to delete some of the
contents
of a backup tape while keeping the rest.



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