Eliminate the temp copy

Matthias Schniedermeyer ms at citd.de
Tue Jan 28 13:19:14 MST 2014

On 28.01.2014 08:35, Juan Pablo Lorier wrote:
> Hi,
> I have to sync two directories and one is an ftp mount. I had to set a
> different tmp dir as tmp files are not allowed in ftp mounts so I see no
> point in copying things to a temp dir if they won't be used for the
> transfer.

What do you mean by ftp mount?
Is that on Linux or something else?

If you DON'T sync to a regular filesystem, there are (or can be) 
limitations on what kind of basic operations are allowed on a file. So 
follows the second questions: Can rsync cope with the limitations. Which 
would explain the I/O-error in the other mail, rsync --inplace does 
something that isn't allowed/supported.

But IFF it isn't a regular filesystem you are syncing to, the value of 
using rsync for the job is largely reduced. Rsync's strength for remoted 
transfers is "delta transfer" which can't be used in such a setup. In 
that setup rsync is reduced to a glorified "cp" (ignoring the capability 
to delete files). You could just use cp directly. And with "-u" you also 
have the basic capability to not copy files that didn't change in 
between runs. (Maybe with an added "-a", or at least 



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