[fuse-devel] Issue with windows DOS "copy" command to a fuse-mount directory through CIFS

[kingsmasher1 <raj...@gm...>]

Hi Miklos,

I can notice something which is much of a concern with regards to
performance of fuse mounted filesystem.

I copied a single file using DOS prompt from Windows machine to a
fuse-mounted directory which had around 4000 files. The fuse mount we
accessed in Windows was through CIFS share.

To my surprise, we saw struct fuse_operations::readdir getting called, and
in turn this means fetching the info for all 4000 files, just for the sake
of copying one file !!!! This unfortunately means, more the files, slower
the performance

However, this does not happen if we copy the file from a Linux box, or
through Linux CIFS to fuse mount.

We are using fuse-3.0. 
Can you help me to know, why it behaves like this? Are we missing something?

Thanks.
kingsmasher1





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