HP XC System Software Administration Guide Version 3.1

options
Specifies a comma-separated list of options, as defined in csys(5).
The hostaddress and _netdev options are mandatory.
• The hostaddress argument specifies the node that serves the file system to other
nodes and specifies the network (administration or system 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.
17.3.2 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 203). 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.
Note:
The node that exports the file system to the other nodes in the HP XC system must have the disk_io
role.
17.3 Mounting Internal File Systems Throughout the HP XC System 205