Hi Wayne, On Wed, Jun 03, 2009 at 08:45:57AM -0400, Wayne Scott wrote:
> The way to do it on linux is to use network block devices and to a raid1 > mirror on the primary backuppc volume with the second volume being the nbd > that actually writes to a drive on another server. Then during normal > operation when nbd is detached and missing from the raid, and nightly you > attach it and the normal linux raid code will mirror the drive. > > This works live without getting in the way of backuppc's operation and it > relatively fast. > > There are lots of howto's on this subject and whole companies formed around > solutions in this area, but for what you want most of those solutions are > more than you need. > > The net result is an online copy of the whole filesystem and you bypass the > issue of hardlinks completely. > And if the network is fast it is way faster than the time it takes rsync to > process all that data. I've got a question and a remark regarding this approach: 1. Does the Linux RAID code only mirror changed portions of the device? Or will it copy everything? 2. You probably end up with _no_ useful backup if something bad happens to your local drive just during the mirroring process. Tino. -- "What we nourish flourishes." - "Was wir nähren erblüht." www.lichtkreis-chemnitz.de www.craniosacralzentrum.de ------------------------------------------------------------------------------ OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get _______________________________________________ BackupPC-devel mailing list BackupPC-devel@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-devel Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
