hmmm. ok, how about a combo. use dd as the initial tool and rsync as the update tool (update from the /dev/<drive here>. THis might be something I need to experiment with to see if it works like I expect it to.

-eric
from the central office of the Technomage Guild

On Jan 27, 2017, at 10:04 AM, Matt Graham wrote:

> On 2017-01-26 17:05, Eric Oyen wrote:
>> why not just use dd and a sufficiently large backup device connected
>> directly to the machine? [...] Basically, I just image the entire
>> device. It's easier to restore that way.
> 
> dd is usually not a good way to back things up because of speed.  "dd if=/dev/mapper/vg-home of=/dev/disk/by-id/usb-123456 bs=1M" would take 90 minutes every time it ran because it's transferring 300ishG.  "rsync -av --delete-after /home/ /mnt/backup1/home/" usually takes 2-5 minutes because it's only transferring the files that have changed, which is usually 150-500M or so.
> 
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