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Modifying Global Settings
StorNext User’s Guide 355
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.
1 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.
2 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.
3 Edit the configuration file by typing the following:
edit /usr/cvfs/config/<file_system_name>.cfg
Note: When the file system is down, file system operations will
pause and some applications could fail. Plan accordingly
to minimize disruptions.