Re: [rsnapshot-discuss] compression?

[Nathan R. <na...@rs...>]

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I agree that the compressed filesystem would really be the only
practical way to accomplish this with rsnapshot, due to the hard link
issues, etc.

Does anyone know of any good, production quality compressed
filesystems? I think Reiser 4 is supposed to have a plug in for this,
but it hasn't been declared stable yet from what I recall.

Also, it seems that some of the abandoned and not-ready-yet
filesystems I looked at were using LZO compression, which is supposed
to be much faster than gzip.

Has anyone tried any of this? Your comments? :)

Thanks,
- -Nathan

Francis Gulotta wrote:

> Like a tar.gz of the changed files?
>
> You'd have to keep at least one set (the latest I guess) of files
> uncompressed... Maybe if you compressed each file individually, but
> with the abundence of small files on most systems that would be
> kind of crazy. The hard part here would be to rsync between the
> latest incrimental and the update when the incrimental isn't the
> same anymore.
>
> A compressed filesystem would probably be the only way to go with
> rsnapshot, you can't maintain hardlinks (which rsnapshot uses to
> save space between duplicate files) across different filesystems
> and once you tar/zip a file it's now got another copy of the data.
>
> "tar -cvzpf " will copy and compress data into a tar.gz file if you
> want it.
>
> Other products (like symantec ghost for example) will keep
> incrimental backups in files and occationally do a full "baseline"
> backup so you don't need every file from the begining to do a
> restore. It's a different method and it has it's drawbacks but it
> does allow for compressed backups and entire incrimentals (or
> baselines) in one file.
>
> -Francis
>
>
> Sharon Kimble wrote:
>
>> Are there any plans to include folder compression into the scheme
>>
> of things so
>> that you would end up with a tar/tar.gz/zip file please?
>
>> If not, can I suggest it for a feature request?
>
>> Sharon.
>

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