backups
seth vidal
skvidal at phy.duke.edu
Mon Sep 20 03:17:14 UTC 2004
On Sun, 2004-09-19 at 20:09 -0700, Kenneth Porter wrote:
> --On Sunday, September 19, 2004 9:48 PM -0400 Colin Walters
> <walters at redhat.com> wrote:
>
> > Well, it's not quite the same thing. You can't safely dump a live
> > filesystem, making it unusable for me.
>
> An explanation of the issue and why it not be an issue, depending on the
> situation:
>
> <http://dump.sourceforge.net/isdumpdeprecated.html>
>
> > Also it's far less granular than an archiver like tar or dar.
>
> It sounded like you were doing filesystem-level backups (including
> incrementals), not archives of isolated directory trees. Dump is very good
> for that.
>
> Do you use any sparely allocated files? How is tar at handling those?
> Dump's restore will restore all the holes as holes, instead of allocating
> zero-filled disk blocks.
tar has a flag for handling sparse files.
-sv
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