6.5 HP StoreAll OS CLI Reference Guide

ibrix_host_tune
Sets and lists tuning parameters for file serving nodes and StoreAll clients.
Description
CAUTION: The default values for the host tuning parameters are suitable for most cluster
environments. Because changing parameter values can alter file-system performance, HP
recommends that you exercise caution before implementing any changes, or do so only under the
guidance of HP technical support.
Host tunings are immediately executed for file serving nodes. For StoreAll clients a tuning intention
is stored in the Fusion Manager. When HP services start on a StoreAll client, the client obtains its
settings from the Fusion Manager and implements them. If HP services are already running on
StoreAll clients when new parameter values are set, you can force the clients to query the Fusion
Manager for the settings by running ibrix_client or ibrix_lwhost --a on the StoreAll
clients, or by rebooting them.
To locally override host tunings on a single StoreAll client, run ibrix_lwhost. All of the Fusion
Manager commands for tuning hosts include an -h HOSTLIST option that can take one or more
host groups. Setting host tunings on a host group is a convenient way to tune a set of StoreAll
clients all at once. To set the same host tunings on all StoreAll clients, specify the built-in clients
host group.
Synopsis
Set tunings on file serving nodes and StoreAll clients:
ibrix_host_tune -S {-h HOSTLIST|-g GROUPLIST} -o OPTIONLIST
The command sets host tunings (OPTIONLIST) on specified file serving nodes and StoreAll clients
(HOSTLIST), or on specified host groups (GROUPLIST). For example, to set host tunings on all
StoreAll clients, use -g clients.
Reset host tunings to their default values:
ibrix_host_tune -U {-h HOSTLIST|-g GROUPLIST} -n OPTIONS
The host tunings (OPTIONS) are reset on the specified file serving nodes and StoreAll clients
(HOSTLIST), or on specified host groups (GROUPLIST). For example, to set host tunings on all
StoreAll clients, use -g clients. The values that are restored depend on what is supplied to the
HOSTLIST option:
• File serving nodes: The default host tunings are restored.
• host groups: The host tunings that are in effect for the parent of the specified host groups are
restored.
• StoreAll clients: The host tunings that are in effect for the default clients host group are
restored.
Lists host tunings for the specified file serving nodes, StoreAll clients, and host groups:
ibrix_host_tune -l [-h HOSTLIST] [-n OPTIONS]
Only settings that differ from the default values are listed. To list settings for specific parameters,
include the -n OPTIONS option.
To list settings for all file serving nodes and StoreAll clients, omit the -h HOSTLIST option.
List host tunings for the specified groups:
ibrix_host_tune -l {-g GROUPLIST | -G }[-n OPTIONS]
Only settings that differ from the default values are listed. To list settings for specific parameters,
include the -n OPTIONS option.
104 StoreAll commands