NFS errors linking large executables

I have a snap server and operating as a NFS file server.


I mount the snap partitions on the following machines: a Fedora Core 2 box,
a Fedora Core 3 box, and a box running RedHat 7.1. The core 2 and 3 boxes
are running relatively upto date kernels. The RedHat 7.1 box is running
an original kernel.


The NFS file system work 99% of the time. However on the Fedora Core 2
and 3
boxes I experience errors when linking large programs. When I link
large programs
and write the executable directly to the NSF partion the executable will
not run (core dumps, won't even get past _start() ); I'll call this case
a. If I
take the same object files (which reside) on the snap server and
direct the linker's output to the local hard drive, then
the executable works fine; I'll call this case b. I can even move
the executable from case b to the NFS partition and it still works fine.
If I diff the executables I see that about 40 bytes in case a
(out of 2MB) in the executable are zero compared to what is present in
case b.
[The overall sizes of the executable from case a and b are identical.]
I do not see this problem when using my older RedHat 7.1 box.


I have tired to increase the rsize and wsize parameters in /etc/fstab as
well as
trying both nsf client versions 2 and 3. The error is present in all cases.
When I try compiling smaller programs things work fine on all three boxes.


The snap server is running SnapOS version 4.0.837. The Core 2 box is
running
kernel 2.6.9-1.6_FC2smp, the Core 3 box is running 2.6.10-1.741_FC3, and
the RedHat
box is running kernel 2.4.2-2.


Any help, suggestions, etc would be most welcome.

-sanjay

In comp.os.linux.networking Sanjay Govindjee <(E-Mail Removed)>:
[..]

> I have a snap server and operating as a NFS file server.

Never heard.

> I mount the snap partitions on the following machines: a Fedora Core 2 box,
> a Fedora Core 3 box, and a box running RedHat 7.1. The core 2 and 3 boxes
> are running relatively upto date kernels. The RedHat 7.1 box is running
> an original kernel.
>

> The NFS file system work 99% of the time. However on the Fedora Core 2
> and 3
> boxes I experience errors when linking large programs. When I link
> large programs
> and write the executable directly to the NSF partion the executable will
> not run (core dumps, won't even get past _start() ); I'll call this case
> a. If I
[..]

> I have tired to increase the rsize and wsize parameters in /etc/fstab as
> well as
> trying both nsf client versions 2 and 3. The error is present in all cases.
> When I try compiling smaller programs things work fine on all three boxes.

Dunno if this is related, however have some problems with FC3
doing only nfs v2, which as expected can't use files >2GB. Nfs v3
doesn't work at all for unknown reasons, nfs v4 should, but
requires some setup (kdc/etc) had no time until now setting up
and it's not clear to me if the nfs-utils are nfsv4 aware at all.

--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
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