[PVFS2-users] PVFS2 and OpenGFS
robl at mcs.anl.gov
Thu Apr 7 19:25:21 EDT 2005
On Thu, Feb 24, 2005 at 10:44:33AM +0100, Alessandro wrote:
> I need a comparison between PVFS2 and OpenGFS, for our choice about
> a cluster file system. (We have kernel 2.4.24 on all machine, gcc
> 3.2.2/3.2.3, Linux RedHat 9) Where can I find some information? Is
> there a benchmark to comparison them?
Hi Alessandro. Sorry for the lateness of my reply. I haven't used
GFS in a few years, so I readily admit my experiences are dated.
Before you can chose what cluster file system you want, you first have
to know what kind of applications you will run.
OpenGFS is a good choice if you have a few nodes and the applications
on those nodes do not need to perform IO in parallel. GFS has gotten
better over the years with parallel IO, but simultaneous writes to a
file will stress the locking subsystem pretty hard.
PVFS2 is a good choice if you have applications that perform a lot of
coordinated and simultaneous IO. Additionally, PVFS2 requires much
less hardware. No need for a SAN, Fibre channel, or other storage
If you want to provide a cluster-wide file system for home directories
(and the kinds of workloads a home directory usually faces), give
opengfs a shot. That's the ideal workload for that file system. If
you have a different worklaod in mind, try PVFS2 -- and let us know
how it goes.
Mathematics and Computer Science Division A215 0178 EA2D B059 8CDF
Argonne National Labs, IL USA B29D F333 664A 4280 315B
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