Coda File System

From: M. Satyanarayanan <satya_at_cs.cmu.edu> Date: Thu, 20 May 2010 08:31:17 -0400

In FUSE, is there a way to direct read() and write() operations directly
to a local file, without bouncing up to user space?    That's what the Coda
kernel module does today, and we need to think through the performance
implications if that is not possible.   The latency and bandwidth of
read() and write() operations are not slowed down by Venus today --- only
open() and close().   Will we be giving that up?   If we have to, will it matter?
         -- Satya

On Thursday 20 May 2010 07:39:07 Greg Troxel wrote:
> 
> I agree that using FUSE for coda would be good.
> 
> On NetBSD (5), coda mostly works, and I use it daily.  "pwd" is broken,
> but I think that's it.
> 
> NetBSD has a BSD-licensed FUSE variant librefuse, built on top of puffs.
> So far it seems that programs written to FUSE work fine on NetBSD with
> librefuse.   http://www.netbsd.org/docs/puffs/