NFS Services Administrator's Guide (B.11.31.02) January 2008

Automatic Mount
To configure a remote directory to be automatically mounted at system boot, follow these steps:
1. Add an entry to the /etc/fstab file, for each remote directory you want to mount on your
system. Following is the syntax for the entry in the /etc/fstab file:
server:remote_directory local_directory nfs defaults 0 0
or
server:remote_directory local_directory nfs option[,option...] 0 0
2. Mount all the NFS file systems specified in the /etc/fstab file by entering the following
command:
/usr/sbin/mount -a -F nfs
3. Verify that your filesystem is mounted by entering the following command:
nfsstat -m
An output similar to the following output is displayed:
/mnt/nfs149 from nfs149:/
Flags:
vers=4,proto=tcp,sec=sys,hard,intr,link,symlink,devs,rsize=
32768,wsize=32768,retrans=5,timeo=600
Attr cache:acregmin=3,acregmax=60,acdirmin=30,acdirmax=60
The directory that you have mounted must be present in this list.
Manual Mount
To mount your directories manually, follow these steps:
1. To mount a remote directory manually, enter the following command:
mount serv:directory_name directory-name
2. Verify if your filesystem is mounted by entering the following command:
nfsstat -m
An output similar to the following output is displayed:
/opt/nfstest from hpnfsweb:/home/tester
Flags:
vers=3,proto=udp,sec=sys,hard,intr,link,symlink,acl,devs,
rsize=32768,wsize=32768,retrans=5,timeo=11
Attr cache:
acregmin=3,acregmax=60,acdirmin=30,acdirmax=60
Lookups: srtt=33 (82ms), dev=33 (165ms), cur=20 (400ms)
The directory that you have mounted must be present in this list.
For a list of mount options, see mount_nfs(1M).
Enabling Client-Side Failover
Using client-side failover, an NFS client can switch to another server if the server supporting a
replicated filesystem becomes unavailable.
The failover is usually transparent to the user. Failover can occur at any time without disrupting
the processes running on the client. Failover is only supported on read-only fileystems.
To mount a directory that has been replicated on multiple servers, enter the following command:
mount -o ro svr:dir_name,srv:dir_name dir_name
If the first NFS server is down, the client accesses the second NFS server.
For example, to mount the Casey directory to replicated servers, enter the following command:
mount -o ro onc21:/home/Casey, onc23:/home/Casey /Clay
Configuring and Administering NFS Clients 41