6.0 HP StorageWorks X9000 File Serving Software CLI Reference (TA768-96040, October 2011)

ibrix_host_tune
Sets and lists tuning parameters for file serving nodes and X9000 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 X9000 clients a tuning intention
is stored in the management console. When HP services start on a X9000 client, the client obtains
its settings from the management console and implements them. If HP services are already running
on X9000 clients when new parameter values are set, you can force the clients to query the
management console for the settings by running ibrix_client or ibrix_lwhost --a on the
X9000 clients, or by rebooting them.
To locally override host tunings on a single X9000 client, run ibrix_lwhost. All of the
management console commands for tuning hosts include an -h HOSTLIST option that can take
one or more hostgroups. Setting host tunings on a hostgroup is a convenient way to tune a set of
X9000 clients all at once. To set the same host tunings on all X9000 clients, specify the built-in
clients hostgroup.
Synopsis
Set tunings on file serving nodes and X9000 clients:
ibrix_host_tune -S {-h HOSTLIST|-g GROUPLIST} -o OPTIONLIST
The command sets host tunings (OPTIONLIST) on specified file serving nodes and X9000 clients
(HOSTLIST), or on specified hostgroups (GROUPLIST). For example, to set host tunings on all
X9000 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 X9000 clients
(HOSTLIST), or on specified hostgroups (GROUPLIST). For example, to set host tunings on all
X9000 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.
• Hostgroups: The host tunings that are in effect for the parent of the specified hostgroups are
restored.
• X9000 clients: The host tunings that are in effect for the default clients hostgroup are
restored.
Lists host tunings for the specified file serving nodes, X9000 clients, and hostgroups:
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 X9000 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.
70 X9000 File Serving Software commands