[Gllug] Network traffic

[tet at accucard.com]

>If i have an nfs filesystem (e.g. server:/pub ) mounted on a local client 
>(say as /import) do file operations such as copying which only relate to the 
>remote fs result in data travelling to the client and back to the server, or 
>is nfs 'intelligent' enough to to do the copy directly on the remote machine?

Data always travels across the network. The program doing the actual copy
(in this case, cp) resides on the client machine. It doesn't know that the
source and destination files are on an NFS filesystem. It just sees them
as files that it can read and write, so that's what it does. That process
of reading and writing involves the data flowing over the network. To
do it any other way would require each application to have knowledge of
where the file was held, and of the vagaries of every possible filesystem
on which it may exist.

Tet

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