NFS mount fails with message "rpc.statd is not running"

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Environment

SUSE Linux Enterprise Server 11 Service Pack 1

Situation

"mount" command fails with the following messages:

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

/var/log/messages shows:

Nov 7 19:00:59 [servername] rpcbind: cannot get local address for udp: Servname not supported for ai_socktype
Nov 7 19:00:59 [servername] rpcbind: cannot get local address for tcp: Servname not supported for ai_socktype
Nov 7 19:00:59 [servername] rpcbind: cannot get local address for udp6: Servname not supported for ai_socktype
Nov 7 19:00:59 [servername] rpcbind: cannot get local address for tcp6: Servname not supported for ai_socktype

Resolution

On nfs client, file /etc/services may be missing "rpcbind" in the "sunrpc"lines for tcp and udp. It should look like this:

[...]
sunrpc 111/tcp rpcbind # SUN Remote Procedure Call
sunrpc 111/udp rpcbind # SUN Remote Procedure Call
[...]

After making changes to /etc/services, restart rpcbind in client with command "rcrpcbind restart" and test your mount again.

Additional Information

Cause:
The file /etc/services had been incorrectly modified and the word "rpcbind" was missing from "sunrpc" lines.

Notes:
To verify rpc.statd is registered on the nfs client, issue command "rpcinfo -p". The service name "status"corresponds to the rcp.statd process so a couple of "status"lines should be listed:

[sles]:~ # rpcinfo -p
   program vers proto   port service
    100000    4   tcp    111 portmapper
    100000    3   tcp    111 portmapper
    100000    2   tcp    111 portmapper
    100000    4   udp    111 portmapper
    100000    3   udp    111 portmapper
    100000    2   udp    111 portmapper
    100024    1   udp 56130 status
    100024    1   tcp 52733 status
    100021    1   udp 47174 nlockmgr
    100021    3   udp 47174 nlockmgr
    100021    4   udp 47174 nlockmgr
         [...]

Before a successful nfs mount, at least "portmapper" should appear here. After a mount, status and nlockmgr will appear as well. With the above problem (incorrect sunrpc line in /etc/services ), none of these lines were appearing.

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