Compressed backup

Matthias Munnich munnich at atmos.ucla.edu
Thu May 23 11:20:02 EST 2002


No! Only the sender side has to compress the data. The comparison
could be done in the compressed data format. With the -z option 
the sender compresses the data anyway. The checksum test should
be faster for the smaller compressed pieces.

Matt

diburim wrote:
> 
> I guess it is not so simple. Because next time you run rsync,
> each file will have to be decompress for comparison.
> 
> Dib
> 
> ----- Original Message -----
> From: "Matthias Munnich" <munnich at atmos.ucla.edu>
> To: <rsync at lists.samba.org>
> Sent: Wednesday, May 22, 2002 9:47 PM
> Subject: Compressed backup
> 
> > Hi
> >
> > I am using rsync for backup on the disks of a Linux backup server.
> > Obviously the server could store more data if the data were
> > compressed. I read the "rsync -> tar" thread. Unfortunately, a
> > compressed file system for Linux does not seem to exist yet.
> > However, rsync can use compression for file transfer.
> >
> > Would it be possible to implement an option to store the data on the
> > backup server in the compressed chunks use for the file transfer?
> > It would save space and should also speedup any later rsynchronization.
> >
> > Matt
> > --
> > --------------------------------
> > Matthias Munnich
> > Univ. of California, Los Angeles
> > Inst. of Geophysics and Planetary Physics
> >
> > --
> > To unsubscribe or change options:
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> > Before posting, read: http://www.tuxedo.org/~esr/faqs/smart-questions.html
> >

-- 
--------------------------------
Matthias Munnich
Univ. of California, Los Angeles




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