Re: [gentoo-user] rsync + tar + bz2 ?

[Hung Dang <hungptit@gmail.com>]

Dirk Heinrichs wrote:
> Am Samstag, 7. März 2009 17:04:17 schrieb Grant:
>   
>> I'm backing up numerous large files on another machine on my local
>> network.  I've only been using rsync, but it occured to me that I
>> might be able to save some time and space if I incorporate tar and
>> bzip2.  How will rsync interact with those?  If I turn the whole
>> backup into a big tar.bz2, would rsync need to redownload the whole
>> thing if I change one file?  If so, maybe I should turn different
>> groups of files into tar.bz2 archives so rsync only needs to
>> redownload an archive if one of its files has changed?
>>     
>
> Another way, although a bit more work to setup, whould be to use a "Network 
> block device". Unlike NFS, the server just exports the block device, 
> everything else (mkfs, encryption) can be done on the client.
>
> Bye...
>
> 	Dirk
>   
rsync will download only if source and destination files are different.
 From my experiences using rar is faster and save more space  than bz2.

Hung