Hello,
I have to write some code ("C") to fetch few blocks from the remote file ( via NFS ), and cache them locally. The idea is to speed up file prebuffering for the local app where functionality is sensitive to file I/O speed. Can someone suggest an approach, or point me out to examples?
Thanks,
-V

Could be difficult..
Things also depend on whether the app reads, writes, or both.

One thing that comes to mind is that NFS-client software will probably have some buffering. Maybe you can change NFS-client code to add/increase buffering? With some luck it may even be a compile time option.

Or add caching code to the app? If it is one specific app.

If you really need something in between, first thing I would think of is to implement a Fileystem in Userspace that mirrors/duplicates part of the NFS mounted directory tree and does the caching in between. Seems a similar thing has been made already too. See: "mcachefs"

Thanks HKO, excellent idea.
-V