some thoughts about gmirror
m.seaman at infracaninophile.co.uk
Sat Apr 7 07:34:37 UTC 2007
R. B. Riddick wrote:
> Sounds like rsync can already do that (I am not sure right now, if rsync can
> find updated areas within a large file, or if it just copies the while updated
> file even if it is a large one)...
rsync will find an updated area within a big file. The algorithm is to
divide any such file into 100kB[*] chunks, calculate checksums of each of
those chunks and only transfer the chunks where the checksum differs
between source and destination. More detail here:
[*] For some value of 100kB.
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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