NFS problems between RHEL4 U3 and RHEL4U6

Tue Jul 22 12:23:27 UTC 2008

No. In the case where saving the file takes minutes, there is an fstab
entry:
server:/home           /home                   nfs     rw,sync,bg
In the other one, I have it set up for automounting:
Auto.master
/mnts   /etc/auto.mnts          --timeout=60
Auto.mnts:
*          -fstype=nfs,rw,nosuid,soft     server:/mnts/&

The fstab and auto.* entries are identical on all of our systems. 

The one differences is on the one client system that is running RHEL4U3,
writing to /home in our test is very fast (about 1 second) where writing
to /home/<user> on the RHEL4U6 servers takes minutes. But, writing to
/mnts/buildarea/<user> is also takes about 1 second. On difference is
the options. I can try a few things. 

--
Jerry Feldman <Jerry.Feldman at algorithmics.com>
Algorithmics (US), Inc
Suite 2-400
275 Grove St.
Newton, MA 02466
617-663-5220
617-663-5391 (fax) 

> -----Original Message-----
> From: redhat-list-bounces at redhat.com [mailto:redhat-list-
> bounces at redhat.com] On Behalf Of Chet Nichols III
> Sent: Monday, July 21, 2008 5:16 PM
> To: General Red Hat Linux discussion list
> Subject: Re: NFS problems between RHEL4 U3 and RHEL4U6
> 
> are the fstab entries the same on both machines (the working one and
the
> not-so-much working one)?
> 
> talk to you soon-
> 
> chet
> 
> On Mon, Jul 21, 2008 at 11:50 AM, <jerry.feldman at algorithmics.com>
wrote:
> 
> > I've made a bit of progress on this.
> > On one o the client machines I am currently not experiencing the
delay.
> > But my test on another client I experienced a delay on my home
directory
> > but not in another directory (buildarea/foo) both exported by the
same
> > NFS server> There is a difference in the export options:
> > /home                    *(rw,insecure,sync)
> >
> > /mnts/buildarea          *(rw,sync)
> >
> > Additionally, /home is mounted by fstab on the clients where the
> > buildarea subdirectories automounted on the clients. I did remove
the
> > insecure locking from the /home entry, restarted ns and remounted
/home
> > on the clients, but there is no change.
> >
> > --
> > Jerry Feldman <Jerry.Feldman at algorithmics.com>
> > Algorithmics (US), Inc
> > Suite 2-400
> > 275 Grove St.
> > Newton, MA 02466
> > 617-663-5220
> > 617-663-5391 (fax)
> >
> >
> > > -----Original Message-----
> > > From: redhat-list-bounces at redhat.com [mailto:redhat-list-
> > > bounces at redhat.com] On Behalf Of jerry.feldman at algorithmics.com
> > > Sent: Monday, July 14, 2008 9:57 AM
> > > To: redhat-list at redhat.com
> > > Subject: NFS problems between RHEL4 U3 and RHEL4U6
> > >
> > > My primary NFS server is running RHEL4 Update3 (unpatched). I just
> > added
> > > a few servers running U6. (The specific release I run is specified
by
> > > our IT department). The problem I am seeing is:
> > > When I save an 8MB file from our application on a client RHEL4U3
> > machine
> > > the save time is about 1 second. When I perform the same test on a
> > > client running RHEL4U6, the save takes about 2 minutes.
> > >
> > > As a test, I exported a directory from one of the RHELU6 systems,
and
> > > the save times were good on both an update 3 and update 6 client.
So,
> > > one solution is to upgrade U3 to U6. (I would probably do a fresh
> > > install). But, that requires some downtime, and the server room is
not
> > > accessible after hours. (All disks are removable so I probably
could
> > > move the volume group to one of the existing servers to minimize
> > > downtime).
> > >
> > > I would like to know if there is some existing NFS issue between
U3
> > and
> > > U6. If I could provide a temporary fix, that would be a better
interim
> > > solution until the additional drives I ordered arrive.
> > >
> > > --
> > > Jerry Feldman <Jerry.Feldman at algorithmics.com>
> > > Algorithmics (US), Inc
> > > Suite 2-400
> > > 275 Grove St.
> > > Newton, MA 02466
> > > 617-663-5220
> > > 617-663-5391 (fax)
> > >
> > >
> > >
> > >
> > >
> >
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> or
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> 
> 
> --
> ----------------------------------------
> chet nichols III
> chet.nichols at gmail.com
> aim: chet / twitter: chet
> http://chetnichols.org
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