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<DIV dir=ltr align=left><SPAN class=609485017-11022008><FONT face=Arial
color=#0000ff size=2>GPFS is supposed to be Posix-compliant even with the
client cache and should not require locking like NFS.</FONT></SPAN></DIV>
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<DIV dir=ltr align=left><SPAN class=609485017-11022008><FONT face=Arial
color=#0000ff size=2>Rajeev</FONT></SPAN></DIV><BR>
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<FONT face=Tahoma size=2><B>From:</B> dcmf-bounces@lists.anl-external.org
[mailto:dcmf-bounces@lists.anl-external.org] <B>On Behalf Of </B>Bob
Cernohous<BR><B>Sent:</B> Monday, February 11, 2008 11:47 AM<BR><B>To:</B> Rob
Ross<BR><B>Cc:</B> dcmf<BR><B>Subject:</B> Re: [dcmf] [PATCH 1/1] Issue 4362:
Honor the romio_ds_write andromio_ds_read hints.<BR></FONT><BR></DIV>
<DIV></DIV><BR><FONT face=sans-serif size=2>That's basically the answer that I
got from an original developer: "we were actively considering support
for NFS and GPFS, both have client side caching".</FONT> <BR><BR><BR><TT><FONT
size=2>Rob Ross <rross@mcs.anl.gov> wrote on 02/08/2008 08:39:34
PM:<BR><BR>> My guess is that it's the "lowest common denominator", that it
works <BR>> for both GPFS (albeit with unnecessary locking calls) and
for NFS, <BR>> which are the two configurations for which IBM is
interested.<BR>> <BR>> Rob<BR>> <BR>> On Feb 8, 2008, at 5:40 PM,
Bob Cernohous wrote:<BR>> <BR>> ><BR>> > robl@mcs.anl.gov
(Robert Latham) wrote on 02/08/2008 04:22:17 PM:<BR>> ><BR>> >
><BR>> > > Do you know why ad_bgl is based off of ad_nfs and not
ad_ufs? The<BR>> > > aggressive locking in ad_nfs is an attempt
to flush client-side<BR>> > > caches, but shouldn't be needed for
other file systems.<BR>> ><BR>> > No, sorry. I'm pretty new
to romio. I'll try to find some answers<BR>> > (and educate myself
on <BR>> >
this)._______________________________________________<BR>> > dcmf
mailing list<BR>> > dcmf@lists.anl-external.org<BR>> >
http://lists.anl-external.org/cgi-bin/mailman/listinfo/dcmf<BR>> >
http://dcmf.anl-external.org/wiki<BR>>
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