chattr

[Keyser Soze]

On Tue, 28 Jan 2003, Steven W. Orr wrote:
> =>You are correct in the fact that dd copies all of the blocks in the
> =>filesystem(gzip fixes this problem) and that you cannot restore onto a 
> =>different filesystem type.
> =>
> =>But you are incorrect with everything else.  You can query the backup for
> =>content, you can restore single files, and you don't have to restore onto
> =>the same disk - as long as the replacement disk of equal or greater size.  
> =>I do these three things all the time with dd.  Let me know if you want to
> =>see how.
> 
> I'm asking :-)



Aiight - back up a block device like this (the filesystem is irrelevant
since dd just creates a raw copy):
dd if=/dev/hda1 of=backup.img


To access the backup for query or for restoring a single file:
mount -o loop backup.img /mnt


Then to restore the entire filesystem (as long as /dev/hdd4 has equal 
or more space than /dev/hda1):
dd if=backup.img of=/dev/hdd4