Data Domain: Mounting and Verifying Exports on the NFS Client

Verify if NFS is enabled:

At the restorer Command-Line Interface (CLI) enter the command "nfs enable":

# nfs enable

Verify that the correct mount options are set on the Data Domain system:

# nfs show clients
path      client                   options
-------   ----------------------   ----------------------------------------
/backup   *                        (rw,no_root_squash,no_all_squash,secure)
/ddvar    *                        (rw,no_root_squash,no_all_squash,secure)
-------   ----------------------   ----------------------------------------

Enabling access to NFS on the Data Domain Restorer:

Add NFS clients that can access the Data Domain system. Use a comma- or space-separated (or both) list for multiple clients. A client can be a fully-qualified domain hostname, class-C IP addresses, IP addresses with either netmasks or length, or an asterisk (*) wildcard with a domain name, such as *.yourcompany.com. An asterisk (*) by itself means no restrictions. A client added to a sub-directory under /backup has access only to that sub-directory.    

The <nfs-options> are a comma-separated or space-separated (or both) list bounded by parentheses. With no options specified, the default options are rw, root_squash, no_all_squash, and secure. The following options are allowed:

Example:

# nfs add /backup 192.168.29.30/24 (rw,no_root_squash,no_all_squash,secure)

Export for specific user

CLI Commands
   -  user show detailed
   - nfs add export-path <client-IP> (rw,root_squash, all_squash, anonuid=user-ID, anongid=group-ID)
   - nfs export modify export-path clients <client-IP> options rw,root_squash, all_squash, anonuid=user-ID, anongid=group-ID 

NFS Client Service Configuration:

The following steps detail the requirements for configuring an NFS client. The examples demonstrate configuration on a Linux host. See the clients operating-specific documentation for additional information.

1. Confirm the NFSD daemon is running on your OS(Operating system.)

   # /sbin/service nfs status
   rpc.mountd is stopped
   nfsd is stopped
   rpc.rquotad is stopped
   Currently NFS service is NOT enabled.

2. Issue the following command to enable the NFS client.

   # /sbin/service nfs start
   Starting NFS services:                                     [  OK  ]
   Starting NFS quotas:                                       [  OK  ]
   Starting NFS daemon:                                       [  OK  ]
   Starting NFS mountd:                                       [  OK  ]

3. Verify that the NFS client service is running.

   #/sbin/service nfs status
   rpc.mountd (pid 7748) is running...
   nfsd (pid 7746 7745 7744 7743 7742 7741  7740 7739) is running...
   rpc.rquotad (pid 7723) is running...

Mounting /backup and /ddvar NFS Shares on the NFS Client:

The following procedure provides an example of configuring Linux and Solaris clients to mount NFS shares from the Data Domain system. The procedure is similar for other operating systems; although the specific commands may differ for each step. See the client Operating Systems documentation for specifics.

1. Create a directory on the NFS client to use for accessing the Data Domain share. In the following example the directory ddr  is used.
2. Change to the newly created directory.
3. Create two sub-directories called backup and ddvar  (within /ddr).
   Note: Ensure the target sub-directories exist or the mount command will fail
4. Mount the file system on the client, using any specific mount-options required for the Operating System.
5. Verify that the mount is successful.

Examples

Linux:

# mkdir /ddr
# cd /ddr
# mkdir backup
# mkdir ddvar
# mount -t nfs -o hard,intr,nolock,nfsvers=3,tcp,rsize=1048600,wsize=1048600,bg HOSTNAME:/backup /ddr/backup
# mount -t nfs -o hard,intr,nolock,nfsvers=3,tcp,rsize=1048600,wsize=1048600,bg HOSTNAME:/ddvar /ddr/ddvar
# ls /ddr/backup

Where "HOSTNAME" is the hostname or IP address of your Data Domain system.

Solaris:

# mkdir /ddr
# cd /ddr
# mkdir backup
# mkdir ddvar 
# mount -F nfs -o hard,intr,llock,vers=3,proto=tcp,rsize=1048600,wsize=1048600 HOSTNAME:/backup /ddr/backup
# mount -F nfs -o hard,intr,llock,vers=3,proto=tcp,rsize=1048600,wsize=1048600 HOSTNAME:/ddvar /ddr/ddvar
# ls /ddr/backup

Where "HOSTNAME" is the hostname or IP address of your Data Domain system.

AIX: 

dir /ddr
# cd /ddr
# mkdir backup
# mkdir ddvar 
# mount  -V nfs  o intr,hard,llock,rsize=65536,wsize=65536,vers=3,proto=tcp,combehind,timeo=600,retrans=2 -p HOSTNAME:/backup /ddr
# mount  -V nfs  o intr,hard,llock,rsize=65536,wsize=65536,vers=3,proto=tcp,combehind,timeo=600,retrans=2 -p HOSTNAME:/ddvar /ddr
# ls /ddr/backup

Where "HOSTNAME" is the hostname or IP address of your Data Domain system.

Example of how to mount a mtree on a nfs client.

# mount -t nfs -o hard,intr,nolock,nfsvers=3,tcp,rsize=1048600,wsize=1048600,bg HOSTNAME:/data/col1/mtree1 /ddr/mtree1