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18-14 Dell PowerVault 720N, 740N, and 760N System Administrator and Command Reference Guide
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NFS problems are indicated when the filer and the client can communicate with each
other using the
ping
command and the client can connect to the filer using
telnet
, but the client cannot mount volumes or directories from the filer.
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Complete the following steps to troubleshoot NFS problems:
1. Make sure that the filer is licensed for NFS by entering the
license
command
at the filer prompt.
If the following message appears
nfs not licensed
or if a message with protocols other than NFS appears but NFS is absent, you
must get a license for NFS.
NOTE: For information about how to get a license, contact Dell technical support,
as described in Getting Technical Assistance.
2. Make sure that the filer can correctly look up the client host name.
3. Make sure that NFS service has been turned On using the
nfs on
command.
4. Make sure that the filer and the client are using correct IP addresses and names.
5. Sometimes a client can see the filer but gets a Permission Denied message
when requesting a mount. If this happens, follow these steps:
Make sure that you defined the file systems correctly in the filers /etc/
exports
file on the root volume and that you ran the
exportfs
command
on the filer.
On certain clients, the mount request does not come from the root user
using a privileged port. The filer denies such mount requests by default to
ensure secure access. To grant such mount requests, enter the following
options
command:
options nfs.mount.rootonly off
To make this change permanent, add the preceding command to your
/etc/rc
file on the root volume.