NFS Mount article

admin — Fri, 23 Oct 2009 11:37:42 +0000

NFS Mount is incredibly useful in a corporate unix environment.

You can use it to share disk space amongst servers, so that each server ‘sees’ the shared filesystem as if it is local.

If your network is fast enough, you can backup your oracle database to a shared filesystem, or just keep

any required software on the shared filesystem so that you do not need to install the software

numerous times on different servers.

In this example, we are sharing a filesystem called orabackup on server share01.world.com, and then

we will mount that on a database server called prod01.world.com.

Add prod01′s IP to /etc/exports

If there is more than one entry, make sure there is a space between IP addresses.

[root@share01 ~]# cat /etc/exports

/orabackup -maproot=root 141.146.8.66

Send a hangup to the mountd process to force it to reread the /etc/exports file.

[root@share01 ~]#kill -s HUP `cat /var/run/mountd.pid`

Alternatively just do : exportfs -ra

Create /orabackup

[root@prod01 ~]# mkdir /orabackup

Edit /etc/fstab, add line to the bottom:

[root@prod01 ~]#cat /etc/fstab share01.world.com:/orabackup /orabackup nfs rsize=1024,wsize=1024

Mount the filesystem :

[root@prod01 ~]#mount share01.world.com:/orabackup

Once that is completed, you will be able to access it like a local filesystem.

[root@prod01 ~]#df -h

Filesystem Size Used Avail Use% Mounted on

/dev/hda9 7.6G 6.5G 750M 90% /

/dev/hda1 99M 8.7M 86M 10% /boot

none 237M 0 237M 0% /dev/shm

/dev/hda7 12G 5.6G 5.7G 50% /home

/dev/hda6 20G 17G 1.7G 91% /u01

/dev/hda3 25G 20G 4.3G 82% /u02

/dev/hda5 20G 8.5G 11G 46% /u03

/dev/hda2 25G 20G 3.5G 86% /u04

share01.world.com:/orabackup 66G 29G 34G 46% /orabackup

Oracle Database Tips blog » nfs mount instructions