NFSv4 on Oracle Exadata

I suppose that this document will match more NFS clients, not only Oracle Exadata.
I’m using the Exadata name case in all the document’s I found on support, the information is WRONG:

      Oracle ZFS Storage: FAQ: Exadata RMAN Backup with The Oracle ZFS Storage Appliance(Doc ID 1354980.1)
      Sun ZFS Storage Appliance: Oracle Database 11g R2 NFS Mount Point Recommendations (Doc ID 1567137.1)
      Step by Step – Configure Direct NFS Client (DNFS) on Linux (11g) (Doc ID 762374.1)

All this documents has the following ops when mounting a NFS share:

<myIP>:/export/myshare /myshare nfs rw,bg,hard,nointr,rsize=1048576,wsize=1048576,tcp,vers=3,actimeo=0,timeo=600 0 0

I found that trying to mount with this options on the Exadata (RH6.6) will show you the wonderful message:

mount.nfs: rpc.statd is not running but is required for remote locking.
mount.nfs: Either use '-o nolock' to keep locks local, or start statd.
mount.nfs: an incorrect mount option was specified

As you can see in Doc ID 1354980.1, their instructions for mounting NFSv3 or NFSv3 are:

dcli -l root -g /home/oracle/dbs_group chmod 644 /etc/hosts.allow
dcli -l root -g /home/oracle/dbs_group chmod 644 /etc/hosts.deny
dcli -l root -g /home/oracle/dbs_group chkconfig rpcbind on
dcli -l root -g /home/oracle/dbs_group service rpcbind start
dcli -l root -g /home/oracle/dbs_group chkconfig nfslock on
dcli -l root -g /home/oracle/dbs_group service nfslock start
dcli -l root -g /home/oracle/dbs_group chkconfig nfs on
dcli -l root -g /home/oracle/dbs_group service nfs start

Which will show an error like:

~ # service nfs start
Starting NFS services:                                     [  OK  ]
Starting NFS quotas: Cannot register service: RPC: Authentication error; why = Client credential too weak
rpc.rquotad: unable to register (RQUOTAPROG, RQUOTAVERS, udp).
                                                           [FAILED]
Starting NFS mountd:                                       [  OK  ]
Starting NFS daemon: rpc.nfsd: writing fd to kernel failed: errno 13 (Permission denied)
rpc.nfsd: unable to set any sockets for nfsd
                                                           [FAILED]

So why don’t use NFSv4 which has portmapping IN the protocol?

<myIP>:/export/myshare /myshare nfs rw,bg,hard,nointr,rsize=1048576,wsize=1048576,tcp,vers=4,actimeo=0,timeo=600 0 0

That’s all, Enjoy!!!

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