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Re: [BackupPC-users] Questions about compression in BackupPC
2008-11-06 16:15:29
I was trying to do ZFS on freebsd to eliminate the need to have backuppc compress the files and instead have ZFS do the work. I have since moved to opensolaris 2008.11 beta as ZFS on freebsd is in alpha quality. Have you considered this approach or are you bound to your current platform for backuppc? ZFS is so perfect for backuppc that it is almost as if they designed ZFS for backuppc. Granted ZFS does not yet to bzip2 compression but you can set gzip to level 9 which is very competative with bzip2.
On Thu, Nov 6, 2008 at 1:07 PM, John Goerzen <jgoerzen AT complete DOT org> wrote:
dan wrote:
> I doubt that the bzip2 compression would really change backup times all
> that much as they are much more I/O contrained than disk bandwidth or
> CPU bound. Many time you can see a backup using a small percentage of
> the CPU but pegging disk I/O. I'm sure it would have some effect but
> only a small one IMHO.
That may be true -- I don't really care about backup times (after all,
it runs while I sleep.) I care about backup *space*.
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