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NFS

Created by dave. Last edited by dave, 16 years and 154 days ago. Viewed 2,952 times. #2
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RedHat 7.3 doesn't play nice using nfs v3, so you have to force it to use v2.

The symptom is that the computer appears to lock up when reading/writing large numbers of files and/or large files. (Both have been reported, I have only managed to reproduce the large number of files in a kernel source tree unpack). Also the entire network appears to stop. Capturing the network traffic from the offending machine shows an amazing number of UDP/IP fragments.

The solution is to add the option

localoptions='nfsvers=2'
… in /etc/init.d/autofs.

RedHat claims that this has been addressed in the update kernel packages, but I'd rather not go there if it isn't absolutely necessary.

links:

Update, 9 September 2004:

Descriptionlink
NetApp claims this is a systemic kernel problem requiring a kernel update>>http://now.netapp.com/Knowledgebase/solutionarea.asp?id=ntapcs6648
RedHat announcement claiming addressing NetApp NFS issues>>http://rhn.redhat.com/errata/RHBA-2002-110.html
NetApp document about NFS on Linux in general>>http://www.netapp.com/tech_library/3183.html?fmt=print
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