Mounting and Sharing an External Volume using NFS on a ROCKS Cluster -- Method 1 (/etc/fstab)

Mounting the Volume on the Head Node

1. Create the directory on the head node on which the volume will be mounted:

           $ mkdir /work1
    

2. Add an entry to '/etc/fstab' that mounts the volume:

           /dev/sdc1   /work1      ext3        defaults    1 2
    

Serve the Mounted Volume using NFS

1. Add an entry to '/etc/exports' to allow NFS sharing of the volume:

           /work1 10.1.1.1(rw,async,no_root_squash) 10.1.0.0/255.255.0.0(rw,async)
    

2. Re-read the new NFS configuration:

           $ exportfs -r
    

Set Up Compute Nodes to Mount the Shared Volume

1. Navigate to the ROCKS site-profile directory:

           $ cd /export/rocks/install/site-profiles/5.1/nodes
    

2. Create a new configuration file based on the skeleton XML:

           $ cp skeleton.xml extend-compute.xml
    

3. Edit the post-installation script section ('<post>...</post>') of the new file:

           <post>
               mkdir /work1
               <file name="/etc/fstab" mode="append">
                   kwyjibo.local:/work1 /work1 nfs defaults 1 2
               </file>
           </post>
    

4. Check for errors:

           $ xmllint -noout extend-compute.xm
    

5. Recreate the distribution:

           $ cd /export/rocks/install
           $ rocks create distro
    

6. Reinstall the compute nodes:

           $ cluster-fork /boot/kickstart/cluster-kickstart