Hi Ken,
I'm curious about your comment "you definitely need to be using mount options". Which of the mount options you listed affects file sizes? Also, some of the options you recommended will potentially negatively affect the performance of the filesystem, especially "noac" and "forcedirectio". Is there a specific reason to bypass the attribute cache and the buffer cache in this test? Also, I don't think "forcedirectio" was a valid option at 11.11. I believe we added this feature in 11.23.
siva3492 -
Before I tried anything else I would take NFS out of the picture and first verify that you are able to create a 20+ GB file locally in the Linux filesystem using whatever tool you prefer, such as dd. If that works, I would then try transfering the TAR archive from the HP-UX box to the Linux box using something like FTP or SCP. If both of those methods work without failure then I would go back to NFS and try again. If NFS still fails I would try collecting a network trace and a tusc output at the end of the file transfer to see what kind of errors are being returned both at the NFS layer and the OS layer when the file creation fails.
Regards,
Dave