re[2]: [SSI] A new cluster filesystem

[Greg F. <freemyer@NorcrossGroup.com>]

Bruce,

I just joined OTN (Oracle Tech Note) (No cost).

They have a Web CVS site for the Oracle Cluster File System (OCFS) at =
http://ocfs.otncast.otnxchange.oracle.com/source/browse/ocfs/

The first part of the readme is significant:

>>>>>>

*******************************************************************************
WARNING this is NOT production quality code in any way, do not run / try this=20
on a production system, this is developer code and is under no way supported
or guaranteed to work other than to crash your system. Use at your own risk.
*******************************************************************************

Ocfs is under development and is intended to be used for running Oracle =
products. Specifically=20
running the Oracle 9iR2 RAC database. It will eliminate the requirement to =
use/setup raw devices.=20
It is not designed to be a general purpose filesystem, but future releases will =
increase regular filesystem performance.
Most filesystem operations are supported, except shared MMAP, hard links and =
flock().

<<<<<<

It doesn't sound like they are going to be working on those last unsupported =
options for a while.

It would probably be good for someone like you Bruce to directly talk to Wim =
Coekaerts (http://otn.oracle.com/oramag/Coekaerts.html) and see if they would =
be interested in adding more general FS features to make it a core piece of =
SSI-Linux.

He is Oracle's Mr. UNIX, and has done a lot of the CVS checkins for the OCFS =
project.=20

FYI: Ellison has had a lot of good things to say about the Tru64 5.0 cluster =
model over the last year or so.  That is why Oracle licensed all of the core =
TruClusters clustering technologies from Compaq. =20

As you know the SSI Linux model is very similar at least from a high level =
perspective, so Oracle should find the whole SSI Linux project of interest.

Greg

 >>  Have heard a little about it but have not seen it yet.  I don't think it
 >>  was based on=20
 >>  the Tru64 CFS.  I believe we should look at it in the context of the open
 >>  SSI
 >>  project as soon as possible.

 >>  Jaideep recently got a recent version of Lustre to work with the
 >>  cluster (Lustre is still pretty green) so we now have openGFS, CFS
 >>  and Lustre as examples of cluster filesystems in the SSI project.

 >>  bruce

 >>  > Since OpenGFS does not seem to be being actively supported, I wondered
 >>  if you guys had seen the new Oracle Cluster FS for Linux.
 >>  >=20
 >>  > Supposedly it is GPL.
 >>  >=20
 >>  > All I have seen is the article at
 >>  http://www.supercomputingonline.com/article.php?sid=3D2459
 >>  >=20
 >>  > My guess is that this CFS is based on the Compaq (HP) Tru64 CFS.  Compaq
 >>  licensed Oracle rights to that CFS about 18 months ago so they could port
 >>  it to *NIX environments.  I don't know if they had the legal right to use
 >>  it as a base for a GPL effort or not.
 >>  >=20
 >>  > Greg Freemyer
 >>  > Internet Engineer
 >>  > Deployment and Integration Specialist
 >>  > Compaq ASE - Tru64 v4, v5
 >>  > Compaq Master ASE - SAN Architect
 >>  > The Norcross Group
 >>  > www.NorcrossGroup.com
 >>  >=20
 >>  >=20
 >>  > -------------------------------------------------------
 >>  > This sf.net email is sponsored by: OSDN - Tired of that same old
 >>  > cell phone?  Get a new here for FREE!
 >>  > https://www.inphonic.com/r.asp?r=FFurceforge1&refcode1=FF3390
 >>  > _______________________________________________
 >>  > ssic-linux-devel mailing list
 >>  > ssi...@li...
 >>  > https://lists.sourceforge.net/lists/listinfo/ssic-linux-devel






Greg Freemyer
Internet Engineer
Deployment and Integration Specialist
Compaq ASE - Tru64 v4, v5
Compaq Master ASE - SAN Architect
The Norcross Group
www.NorcrossGroup.com