How to: NFS

[mzainal]

Hi,

I have server A and server B. Both using same OS and same hardware. Server A attached with external HDD. Server A will be backup server. Server B have oracle DB. So, i want to use external HDD from server A to backup data from server B. I follow all tutorial that i found in the net. But i getting error:

[oracle@backup Disk1]$ cd /media/usbdisk/
[oracle@senangin usbdisk]$ ll
total 48
drwxr-xr-x  2 root root 49152 Mar 17 12:21 lost+found
[oracle@backup usbdisk]$ mkdir test
mkdir: cannot create directory `test': Read-only file system
[oracle@backup usbdisk]$

This is from server A. I try to write something in external hdd, but get those kind of error.SELinux has been disable during the installation of OS.

drwxr-xr-x  2 root root 4096 Mar 19 09:51 cdrom
drwxrwxrwx  3 root root 4096 Mar 17 12:21 usbdisk

/etc/exports

[oracle@senangin ~]$ cat /etc/exports
media/cdrom              *(ro,sync,no_root_squash)
/home/oracle/wong_shared 192.168.9.*/255.255.255.0(rw,sync)
/media/usbdisk           192.168.9.*/255.255.255.0(rw,sync,no_root_squash)
/mnt/Disk1               192.168.9.*/255.255.255.0(rw,sync)
[oracle@senangin ~]$

[Ziplock]

Hi there,

The permissions can change when the drive is mounted. Please connect the usb drive and make sure is it mounted, then post the output of the following:

mount
ls -al /media/usbdisk

[mzainal]

The usb drive already mounted.

[root@senangin ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                      2.0G  339M  1.6G  18% /
/dev/sda1              99M   13M   81M  14% /boot
none                  4.0G     0  4.0G   0% /dev/shm
/dev/mapper/VolGroup00-LogVol01
                      2.0G   37M  1.9G   2% /tmp
/dev/mapper/VolGroup00-LogVol02
                       30G   18G   11G  63% /usr
/dev/mapper/VolGroup00-LogVol03
                      7.9G  330M  7.2G   5% /var
/dev/mapper/VolGroup00-LogVol05
                       20G  5.9G   13G  32% /u01
/dev/mapper/VolGroup00-LogVol06
                      205G   83G  112G  43% /home
/dev/sdc5             289G   33M  274G   1% /media/usbdisk
/dev/sdd5             289G   33M  274G   1% /media/usbdisk1
[root@senangin ~]#

[Ziplock]

It looks like it's mounted twice.. do

umount /media/usbdisk
umount /media/usbdisk1

then try again.