[Pvfs2-users] PVFS2 Stability
vilayann at mcs.anl.gov
Tue Apr 11 10:56:18 EDT 2006
Thanks for the report.
Could you turn on TROVE_DEBUG (i.e. pvfs2-setdebugmask -m .. "trove,
storage") on the servers and send that (if it is not too large for the
list or privately)?
On Mon, 10 Apr 2006, Luke Hindman wrote:
> I've been working with PVFS2 since December, trying to implement it on our
> 60 node (120 CPU) Linux Beowulf Cluster. We run several applications that
> are I/O intensive, and the performance improvements (read and write) over
> NFS have been phenomenal! However, I am having a problem with stability.
> Quite frequently, when I run a job that utilizes the pvfs2 filesystem, some
> of my processes will hang indefinitely. I have tried a variety of
> applications, including writing a simple shell script using the pvfs2-cp
> command just to copy files around and a simple MPI2 program using the ROMIO
> interface as well as standard Unix I/O. In every case I can cause the
> processes to hang.
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