
Installing the HP SFS client software on HP XC systems (new installations) 2–7
• The mount operation may stall for up to ten minutes. Do not interrupt the mount operation—as
soon as the file system moves to the started state, the mount operation will complete.
If the mount operation has not completed after ten minutes, you must investigate the cause of the
failure further. See Section 7.2.1 of this guide, and Chapter 9 of the HP StorageWorks Scalable File
Share System User Guide for information on troubleshooting mount operation failures.
2.2.7 Step 7: Creating the /etc/sfstab.proto file
The SFS service uses the /etc/sfstab.proto file to mount Lustre file systems at boot time. Do not use the
/etc/fstab or /etc/fstab.proto files to mount Lustre file systems.
Create an /etc/sfstab.proto file as follows:
1. If an /etc/sfstab file exists on the head node, delete it as follows:
# rm /etc/sfstab
2. Stop the SFS service as follows:
# service sfs stop
3. Edit /etc/sfstab.proto using any text editor.
The format and syntax of the /etc/sfstab.proto file is described in Chapter 4. In addition to the
general description provided in that chapter, there are specific rules that apply to HP XC systems. To
ensure correct and optimal operation of the HP XC system, you must observe the following rules:
•If the /hptc_cluster file system is stored on the HP SFS system, it must be mounted in
foreground mode; that is, you must not use the /jointfilesconvert/261981/bg (background) mount option. This applies to all
nodes including the head node. This means that when a node has booted, the
/hptc_cluster file system will always be mounted on the node.
CAUTION: If you plan to store the /hptc_cluster file system on the HP SFS system, you must
contact your HP Customer Support representative to discuss the operational aspects of this
configuration. Unless your systems are correctly configured, placing the /hptc_cluster file
system on the HP SFS system can make the HP XC system difficult to manage.
• The head node must mount all other file systems (that is, with the exception of the
/hptc_cluster file system) using the /jointfilesconvert/261981/bg mount option. This means that the head node will
always boot even if some file systems are not in the started state.
• All nodes other than the head node must mount Lustre file systems in foreground mode; that is,
they must not use the /jointfilesconvert/261981/bg option on any file system. This means that when the nodes have booted,
all of the file systems will be mounted on the nodes, and jobs can run on the nodes.
• You must use the lnet: protocol in the mount directives in the /etc/sfstab file. You cannot
use the http: protocol in the /etc/sfstab file; the http: protocol (described in
Section 4.8.1) must only be used for interactive mount operations.
• You must use the server=name mount option. This option is not needed by the SFS service;
however, it is required for the correct operation of the nconfigure stage of the
cluster_config utility.
• HP recommends that you also use use the fs=name option.
An example of /etc/sfstab.proto is shown in Example 2-1. In this example, n1044 is the head node,
and south is the HP SFS system.
Comentarios a estos manuales