Quantum 3.5.2 manual InodeCacheSize

Modifying Global Settings

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.

1Unmount 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.

2Stop 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.

Note: When the file system is down, file system operations will pause and some applications could fail. Plan accordingly to minimize disruptions.

3Edit the configuration file by typing the following: edit /usr/cvfs/config/<file_system_name>.cfg

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