NFS Services Administrator Guide (5900-3045, March 2013)

If the rpcinfo command returns RPC_TIMED_OUT, the rpc.mountd process may be hung.
Enter the following commands on the NFS server to restart rpc.mountd (PID is the process
ID returned by the ps command) :
/usr/bin/ps -ef | /usr/bin/grep mountd
/usr/bin/kill PID/usr/sbin/rpc.mountd
□ You can receive “server not responding” messages when the server or network is
heavily loaded and the RPC requests are timing out.
NOTE: For TCP, the default timeout is 600 while for UDP, the default timeout is 11.
Try doubling the timeo mount option for the directory, as in the following example from the
/etc/fstab file, which changes the timeo value from 600 (the default) to 1200. (The
timeo option is in tenths of a second.)
cabbage:/usr /usr nfs nosuid,timeo=1200 0 0
□ Enter the following command on the NFS client to check that your hosts database returns
the correct address for the NFS server:
/usr/bin/nslookup server_name
Enter the same nslookup command on the NFS server, and compare the address with the
one returned by the nslookup command on the NFS client. If they are different, correct your
NIS, BIND, or /etc/hosts configuration. For information on BIND or /etc/hosts, see
Installing and Administering Internet Services (B2355-91060).
□ If you are using AutoFS, enter the ps -ef command to make sure the automountd process
is running on your NFS client. If it is not, follow these steps:
1. Make sure the AUTOFS variable is set to 1 in the /etc/rc.config.d/nfsconf file
on the NFS client.
AUTOFS=1
2. Enter the following command on the NFS client to start the AutoFS:
/sbin/init.d/autofs start
“Access Denied” Message
□ Enter the following command on the NFS client to check that the NFS server is exporting the
directory you want to mount:
/usr/sbin/showmount -e server_name
If the server is not exporting the directory, edit the /etc/dfs/dfstab file on the server so
that it allows your NFS client access to the directory. Then, enter the following command to
force the server to read its /etc/dfs/dfstab file.
shareall -F nfs
If the directory is shared with the [access_list] option, make sure your NFS client is
included in the [access_list], either individually or as a member of a netgroup.
□ Enter the following commands on the NFS server to make sure your NFS client is listed in its
hosts database:
nslookup client_name
nslookup client_IP_address
Common Problems with NFS 95