Les Mikesell wrote:
> Peter Walter wrote:
>   
>> For me, the matter could be resolved if a 
>> way was found to at least backup a backuppc server in a reasonable 
>> fashion without requiring particular filesystems and utilities such as 
>> zfs send/receive.
>>     
>
> But there is a reasonable way: unmount the partition and image-copy the 
> raw disk or partition.  Given that the issue with other approaches is 
> that the head has to seek all over the place to access the same amount 
> of data through the filesystem, this solves the problem neatly with one 
> linear pass.  Or, get the same effect by raid-mirroring to your backup 
> device so you only have to unmount momentarily to fail/remove the other 
> copy.   Zfs improves on this since it has an incremental mode that is 
> still based on the block device.
>
>   
Les,

Yeah - but you need physical access to do that, and presumes your 
storage devices are "real". My needs are to backup a backuppc server 
where the server doing the backup is at a remote location from the 
backuppc server, and physical access to either server is difficult - I 
am dozens (sometimes hundreds) or miles away from either server. In 
addition, I have access to "cloud storage" I would like to take 
advantage of, but can't because of the hardlink issue. My (klugey) 
solution at present is to use a backuppc server to backup the backuppc 
server, but even incrementals take days to run.

Peter

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