2011-03-15 16:25:48

by Judith Flo Gaya

[permalink] [raw]
Subject: problem with nfs latency during high IO

[Sorry if the e-mail appears to be duplicated, I don't see it in the
list, but I sent it 3 days ago ;(]

Hello,

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 truing 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, 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 looking at the file.

Can you help me on this? I'm 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