NFS Mount article
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.
Steps to take on share01:
Log in as root.
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
Steps to take on prod01:
Log in as root.
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
Posted: October 23rd, 2009 under Oracle Scripts.
Tags: 5g, avail, filesystem, hangup, hup, ip addresses, mkdir, nfs mount, nfs mount instructions, unix environment