mount -t nfs4 fails w/ permission denied; how to debug? (FC3)

Rick Stevens rstevens at vitalstream.com
Wed Mar 16 18:00:15 UTC 2005


Ankush Grover wrote:
> On Tue, 15 Mar 2005 22:23:48 +0000, Will Partain
> <will.partain at verilab.com> wrote:
> 
>>In a test setup with FC3 client and server, I can successfully
>>
>>   sudo mount -t nfs albus:/._disc1/sysadm/test1 /mnt/test1
>>
>>(getting an nfs v3 mount).  If I instead...
>>
>>   sudo mount -t nfs4 albus:/._disc1/sysadm/test1 /mnt/test1
>>
>>... I get "mount: permission denied".  Nothing appears in the logs of
>>either machine (well, one uninteresting SELinux message; SELinux is
>>not enforced on either machine).  I believe that bits are getting to
>>the server: certainly running ethereal against port 2049 on the server
>>shows chit-chat at the expected time.  This is without Kerberos,
>>i.e. it should be doing sec=unix.
>>
>>So the question: how can I get something to tell me more about what's
>>going on?  Thanks,
>>
> 
> hey,
> 
>   why ru giving nfs4 where in the above line you have given nfs ,try
> to give nfs only not nfs4.
> for nfs to work ,port 111(portmapper),mountd,port 2049(nfs),rpc should
> be running on the server.

There is no "nfs4" filesystem type.  If you want to use NFSV4, then
add "nfsvers=4" in the mount options field:

sudo mount -t nfs -o nfsvers=4 albus:/._disc1/sysadm/test1 /mnt/test1

You should also note that many NFSV4 hosts no longer support UDP (the
default NFS network protocol) and only work with TCP.  You may need to
set the options to:

	-o nfsvers=4,proto=tcp

for it to work under NFSV4.
----------------------------------------------------------------------
- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-    Admitting you have a problem is the first step toward getting   -
-    medicated for it.      -- Jim Evarts (http://www.TopFive.com)   -
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