PSA: NFS Locking in RHEL6 Needs Reverse Lookup of NFS Server

The RHEL6 version of rpc.statd needs to be able to reverse lookup a hostname for the IP address of your NFS server if you want to lock files mounted from that server. If you don't have a reverse lookup for the IP of your NFS server, just throw its IP and some kind of name for it in /etc/hosts.

Otherwise you get errors in syslog to the effect of:

Feb 23 13:14:57 wardentest3 rpc.statd[1259]: No canonical hostname found for 10.238.3.20
Feb 23 13:14:57 wardentest3 rpc.statd[1259]: STAT_FAIL to wardentest3.geneseo.edu for SM_MON of 10.238.3.20
Feb 23 13:14:57 wardentest3 kernel: lockd: cannot monitor 10.238.3.20