If you are using LVM, just use pvmove and vgsplit with only a little downtime.

On Wed, Oct 28, 2009 at 9:25 PM, dan <dandenson@gmail.com> wrote:
You can tar up the whole pool directory and put it on an external drive pretty easily.  Just make sure that backuppc is not running when you do this -OR- do an LVM snapshot and then backup the snapshot.

I have been using rsync to sync two servers for a long time but have recently started experimenting with DRDB for the remote sync.  Are you interested in running two machines or do you just want to archive the data?

If you just want an archive of the data maybe consider just pulling off periodic full backups to your alternate media.  You have two options really which is to do an archive or restore and put the tar or zip archive on the external storage or you could even copy the specific backup for the pool/cpool directory onto the media by host.

Another option would be to create a MD1 mirror with your primary data as a member of the mirror and your USB device as a member.  You can add the USB device to the array long enough for it to sync and the remove it for offsite storage.  You can then re-sync it anytime you like or even rotate in other disks.  This can be time consuming but I see MD1 rebuilds running at 30MB/s+ on very modest hardware so you could do a Terabyte in 8 or 10 hours and the array can remain active (though slow).  My 4 drive array rebuilds at about 80MB/s  and it is just 4 seagate 7200.11 drives in a raid10 (two mirrors in raid1) and I *can* add a single USB disk to the array though I have only done this in testing and it isnt my standard practice.  I archive to DVD periodically.

On Wed, Oct 28, 2009 at 12:53 AM, Chris Owen <chrisowen@eigersecurities.com> wrote:
Hey

Would like some advise on the best way to backup backuppc. I have a
1TB  USB drive that I would like to copy all of our backups to. Has
anyone done this? How easy is it to roll back from USB?

Many Thanks

Chris Owen
Sent from my iPhone

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