[linux-lvm] Block-Level Backup

Joe Thornber thornber at sistina.com
Thu Aug 7 04:37:01 UTC 2003

On Thu, Aug 07, 2003 at 05:14:30PM +0800, Rocky Lee wrote:
> >What exactly shall this be good for?
> >I immediately thought about ISO files: CD-ROM images. You can do the
> >very same to any block device:
> >dd if=/dev/hda1 of=/tmp/disk.bak
> >Of course, the drive mounted ot /tmp has to be larger than /dev/hda1, in
> >this case... and it's filesystem should probably support files > 2GB.
> >Compression might help, too.
> >Not sure if that's whah you're looking for...
> >Markus
> Thank you Markus!
> I forget "dd", it really is a good way to do a simple block-level backup, :)
> but it'll be great if there's a tool,
> that supoorts block-level increment backup....

Icremental backup would be good, from the kernel side all you'd need
is a dm target that records which blocks have changed - anyone
interested in coding this ?

- Joe

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