[Box Backup] Virtual Machine backup

[Chris Wilson]

Hi Dave,

On Mon, 8 Jun 2009, Dave Bamford wrote:

> First I create a virtual machine (XP pro in this case) with a 2G hard 
> drive.
>
> Then copy it via NFS to another machine running box client
> and let it back up over the net to one of my servers.
[...]
> Then I make some changes to the vm (I add vmware tools support)
>
> replace the files on the nfs drive with the new ones of the same name
>
> Box back it up but only the differences if I have interpreted it correctly.
>
>> Jun 8 19:05:02 backup6 bbackupd[18765]: NOTICE: Beginning scan of
>>   local files
>> Jun 8 19:33:15 backup6 bbackupd[18765]: NOTICE: Finished scan of local
>>   files
>> Jun 8 19:33:15 backup6 bbackupd[18765]: NOTICE: File statistics: total
>>   file size uploaded 2185862686, bytes already on server 1720804357,
>>   encoded size 210338595
>
> So now we have a means of "bare metal backup" with box.

I believe that your understanding is correct. bbackupd "only" uploaded 210 
MB of differences in this case. That's still quite a large diff, though 
(about 10% of the total disk image size).

Cheers, Chris.
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