HP XC System Software Administration Guide Version 3.2

interconnect) to be used. The hostaddress is specified either by its node
name or by its IP address.
The following entry uses the node name for n60 over the administration
network:
hostaddress=n60
The prefix ic- specifies the system interconnect. The following entry uses
the node name for n60 over the system interconnect:
hostaddress=ic-n60
The following entry uses the IP address for n60 over the administration
network, 172.22.0.60. The second octet, 20, specifies the administration
network:
hostaddress=172.20.0.60
The following entry also uses the IP address for n60 over the system
interconnect. The second octet, 22, specifies the system interconnect:
hostaddress=172.22.0.60
• The _netdev argument directs the system startup scripts not to mount
this file system until the network is up.
These parameters are interpreted differently depending on whether the host is exporting or
importing the file system:
• The exporting host, which is specified with the hostaddr parameter, mounts the file system
locally and exports it to the other nodes.
• The nodes whose host names do not match the hostaddr parameter import the file system.
An example entry follows:
/dev/sdb1 /scratch csys hostaddress=n60,_netdev
The node n60 mounts the file system (whose device name is /dev/sdb1) as /scratch locally,
and automatically exports it over the administration network.
18.3.2 Mounting Internal File Systems
Use the following procedure to mount a file system on a disk on one node in an HP XC system
to one or more other nodes:
NOTE: The following procedure uses the node names from the example introduced in “Mounting
Internal File Systems Throughout the HP XC System” (page 217). Use the appropriate node names
for your installation; they must have the prefix established during the cluster_prep utility.
1. Log in as superuser on the head node.
2. Determine which file systems are to be mounted and from which node they are to be exported.
The /proc/partitions file displays the partitions and their device names. Execute the
mount command to determine which of these partitions are already mounted.
In the example, node n60 mounts the file system whose device name is /dev/sdb1 locally
as /scratch and exports the file system. Nodes n61, n62, and n63 import the file system.
18.3 Mounting Internal File Systems Throughout the HP XC System 219