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VWrestle97 10-06-2009 08:11 PM

Could Large file Size cause "RPC: Authentication error" with NFS server mount
 
Hello,

I think I am having a problem due to an NFS server file size limit. Is it possible I am missing a parameter on the RHEL NFS setup to handle large files?

BACKGROUND:

I am running an NFS server on a RHEL 5.1 machine and the HP-UX 11.0 machine does an NFS mount to that file system. The HP-UX executes a program that resides on the HP-UX machine to process a large 35 GB data file that resides on the NFS server machine. The program on the HP-UX can only read/process the first portion of the file untill an "RPC: Authentication error" is returned multiple times until the program prematurely decides that it has reached the end of file.

I tried recompiling the same program to run on the RHEL 5.1 NFS server to access the 35 GB file locally (on the NFS server instead on HP-UX) and the program completed successfully, processing the whole file (about 7 hours of processing) with no "RPC: Authentication error." In addition, I have been running the nfs mount with the same machines for quite some time, but not with such large files sizes.

Thank you,

-WP

irishbitte 10-06-2009 09:22 PM

Take a look at this link, it's a little dated, but NFS does not move very fast, so likely to be relevant to your situation. :http://forums11.itrc.hp.com/service/...threadId=72952 It seems to me that file size is an issue for NFS, but a more likely candidate is some version of a program like tar or cp or something on the Unix box? Is there a script being used to operate on your file? Can you post it?

VWrestle97 10-08-2009 12:03 PM

irishbitte, Thank you for your post. It appears that the problem may have been due to other activity on the network. I found out that people were rebooting systems on the network during the same time of this error.

Thank you,

-WP

irishbitte 10-09-2009 07:32 PM

Aha! Didn't realise you had it mounted from other machines, I gotcha now!


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