Rich Rauenzahn wrote:
>> If I have 2 hosts that contain common files, and compression is enabled
>> on one but not the other, will these hosts' files ever get pooled?
>>
>> What if compression is enabled on both, but different compression levels
>> are set?
>>
>>
>>
> I'm curious about this as well, but would like to add to the question --
> what if I'm backing up some hosts across the internet, and I set the
> compression to bzip2 -9. But local hosts on the LAN I set to gzip -4.
>
> I believe I read that the pool checksums are based on the uncompressed
> data -- so I would expect that anything common backed up across the
> internet first will be shared as bzip2, but anything common backed up
> locally with gzip first would be shared as gzip.
>
> I'm also assuming it is ok to be mixing the two compression methods in
> the pools!
Compression is done on the server side after the transfer. What's the
point of using different methods? According to the docs, compressed and
uncompressed files aren't pooled but different levels are. The only way
to get compression over the wire is to add the -C option to ssh - and
you'll probably want to use rsync if bandwidth matters.
--
Les Mikesell
[EMAIL PROTECTED]
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