problem with nfs ls latency during high IO

[Judith Flo Gaya]

Hello,

I hope this is the list to write to, if it's not, please let me know.

Here is the problem:
I was told some days ago that my problem with my NFS system is related
to this bug, as the problem that I'm experiencing is quite similar.

The bug : https://bugzilla.redhat.com/show_bug.cgi?id=469848

The link itself explains quite well my issue, I'm just trying to copy a
big file (36Gb) to my nfs server and when I try to get an ls -l command
to the same folder where I'm copying data (within the same machine), the 
command gets stuck for some time. This amount of time changes from a few 
secs to SOME minutes (9' is the current record).
I can live with some seconds of delay, but minutes is something quite
unacceptable.

As this is an nfs server running on a red hat system (an HP ibrix x9300
with Red Hat 5.3 x86_64, kernel 2.6.18-128) I was told to apply the
patch suggested from the bug on my clients.

Unfortunately my clients are running fedora core 14 (x86_64, kernel
2.6.35.6-45) and I can't find the file that they are referring to, the
file fs/nfs/inode.c is not there and I can't find the rpm that contains it.

As the bug is a very very old one, I took it for granted that is already 
applied to fedora, but I wanted to make sure that it is by looking at 
the file.

Can you help me on this? am I wrong in my supposition (is the patch
really applied)? is it possible that my problem is somewhere else?

Thanks a lot in advance for your help, please let me know if I can
provide any more information.
j



-- 
Judith Flo Gaya
Systems Administrator IMPPC
e-mail: jflo at imppc.org
Tel (+34) 93 554-3079
Fax (+34) 93 465-1472

Institut de Medicina Predictiva i Personalitzada del Càncer
Crta Can Ruti, Camí de les Escoles s/n
08916 Badalona, Barcelona,
Spain
http://www.imppc.org