HP XC System Software Administration Guide Version 2.1

14
Mounting File Systems
This chapter provides information and p ro cedur es for perform ing t asks to mount file systems
that are internal and external to the HP XC system.
• A discussion of NFS on the HP XC system (Se
ction 14.1)
• A description of the global fstab file (Section 14.2)
• A procedure for mounting file system s from a disk attached to one node o f the HP XC
system. to other no des. (Section 14.3)
• A procedure for mounting file systems
fromaremotesystem(Section14.4)
14.1 Overview of the Network File Sys
tem on the HP XC System
The HP XC System Software supports Network File System (NFS) 3 c lient and serv er
functionality.
NFS files can be shared among the no
des of the HP XC system or can be shared between the HP
XC system and an e xternal system .
External NFS files can be shared w ith any node having a
direct external network connect
ion. It is also possible to set up NFS to import external files
to nodes of the HP XC system witho
ut external network connections, by routing through a
node with an external network
connection.
The administrator can choose to use either the HP XC administrative network o r the HP
XC system interconnect for NFS operations. The system interconnect can potentially offer
higher performance, but only at the potential exp e nse of the performance of application
communications.
The ports for the RPC services used by NFS are tied to specific port numbers in the HP XC
System Software, as shown in Table 14-1.
Table 14-1: NFS Daemon Po
rts
NFS Daemon
Port
rpc.statd
4000
rpc.lockd
4001
rpc.mountd
4002
rpc.rquotad
4003
14.2 Understanding the Global fstab File
The /hptc_cluster/etc/fstab.proto is used to construct the actual /etc/fstab
file for each node of the HP XC system, which in turn dictates which file systems are mounted.
This occurs when the cluster_fstab service is started or restarted, and a t system boo t.
The following command restarts this service:
# service cluster_fstab restart
You can edit the fstab.proto file to d esign ate the m ou nting instruction s fo r a given node,
for a group of no des, or f or all the nodes in HP XC system; the fstab.proto file follows the
same syntax as the /etc/fstab file. Do n ot edit any /etc/fstab files.
Mounting File Systems 14-1