Red Hat Bugzilla – Bug 458539
man nfs : wrong information about nfs version used
Last modified: 2009-05-18 15:02:11 EDT
Description of problem:
According to the 'man nfs' page, default nfs mount will use nfs V2:
Version 2 is the default protocol version for the nfs file system type when nfsvers= is not specified on the mount command.
This is not true according to my tests. The default is nfs V3 on RHEL 4
( This can be checked with 'cat /proc/mounts |grep v3' after an nfs mount without nfsvers= )
If no version is specified, NFS uses the highest supported version by the kernel and mount command.
I think that is what happens as well with RHEL 4
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. create an nfs export from a RHEL4 servre
2. mount the nfs from a RHEL4 server
3. Check that NFS version used is 3 not 2 with
cat /proc/mounts |grep v3
4. This is not what the man page says
v3 is used, but man page says v2 will be used instead
"man nfs" should probably says that if no version is specified, NFS uses the highest supported version by the kernel and mount command.
Fixed in util-linux-2.12a-24.el4 (since that's where the man
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
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