[Pvfs2-users] metadata problems with pvfs-2.6.0

[Robert Latham]

On Wed, Dec 20, 2006 at 06:55:22PM +0530, Vikrant Kumar wrote:

> Sometime 
> if I create a file on one client, it is not visible on other client 
> using ls and if I try to remove if from this client, instead of saying 
> file does not exist, it says that action not allowed or something to 
> that effect. From this it looks like there is a mismatch of meta data 
> information somewhere.

How long are you waiting between the creation at one client and the ls
on the other?  You could be seeing something related to the name
cache, but entries in the ncache should get flushed in 30 seconds.

> With MPI applications it fails at certain times in MPI_File_open on some 
> nodes, which again looks similar to the above problem.

I'll definitely be able to help you more with the MPI_File questions.
Are you using MPI_COMM_SELF when you open these processes?  Which
version of MPICH are you using?  

Thanks
==rob

-- 
Rob Latham
Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
Argonne National Lab, IL USA                 B29D F333 664A 4280 315B