Quantum 3.5.1 Manual De Usuario

Modifying Global Settings

StorNext User’s Guide

354

For most of these parameters, the only thing necessary for the modified 

parameter to take effect is to restart the File System Manager (FSM). 

However, the following parameters require that the file system be fully 

re-initialized (which will result in data loss,) before they take effect:

• FSBlockSize

• WindowsSecurity

If a parameter change requires file system re-initialization, the system 

notifies the administrator in the system log. In order to reduce the 

number of file system remakes, be sure to plan the initial configuration of 

the FSBlockSize and WindowsSecurity parameters carefully. 
The global section also contains several parameters that can dramatically 

improve or degrade system performance. Exercise caution when 

modifying performance parameters. One key performance parameter is 
InodeCacheSize.

Before making any changes to the file system’s configuration, carefully 

review the cvfs_config(4) man pages or the “CVFS Configuration File” 

help file. 
Use this procedure to modify system global settings using CLI.

Unmount the file system by typing the following:

unmount <file_system_name>

Where the file system name is the name of the file system where the 

settings are being modified.

Stop the file system by typing the following:

/usr/cvfs/bin/cvadmin
snadmin> stop <file_system_name>
snadmin> quit

where snadmin is the prompt shown after invoking the cvadmin 

command.

Edit the configuration file by typing the following:

edit /usr/cvfs/config/<file_system_name>.cfg

When the file system is down, file system operations will 

pause and some applications could fail. Plan accordingly 

to minimize disruptions.