Rsync over NFS mount sending whole files

Eberhard Moenkeberg emoenke at
Thu Oct 27 19:18:00 GMT 2005


On Thu, 27 Oct 2005, Anban Mestry wrote:

> I'm not sure if anyone has experienced this, and I have searched for
> it online, with no conclusive, err.. conclusions.
> Basically, when rsyncing two \test1(local) and \mnt\test2\ (NFS mount)
> it seems that when using rsync with --no-whole-file entire files
> (instead of just updated blocks) are sent through.
> I am using the following command
> rsync -avtz --no-whole-file \test1\ \mnt\test2\
> For example, if say a particular file was 30KB, IPTRAF reports just
> over 31KB transferred while rsync itself reports just a few bytes
> (i.e. 200 or so).

One of your "local only" rsync instances has to read the entire file in 
order to find out that only 200 bytes are to transfer. ;-))

Cheers -e
Eberhard Moenkeberg (emoenke at, em at

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