HP IBRIX X9720 System Administrator Manual page 82

All Fusion Manager commands for tuning hosts include the -h HOSTLIST option, which supplies
one or more hostgroups. Setting host tunings on a hostgroup is a convenient way to tune a set of
clients all at once. To set the same host tunings on all clients, specify the clients hostgroup.
CAUTION:
before changing host tuning settings.
Use the ibrix_host_tune command to list or change host tuning settings:
To list default values and valid ranges for all permitted host tunings:
ibrix_host_tune -L
To tune host parameters on nodes or hostgroups:
ibrix_host_tune -S {-h HOSTLIST|-g GROUPLIST} -o OPTIONLIST
Contact HP Support to obtain the values for OPTIONLIST. List the options as option=value
pairs, separated by commas. To set host tunings on all clients, include the -g clients
option.
To reset host parameters to their default values on nodes or hostgroups:
ibrix_host_tune -U {-h HOSTLIST|-g GROUPLIST} [-n OPTIONS]
To reset all options on all file serving nodes, hostgroups, and X9000 clients, omit the -h
HOSTLIST and -n OPTIONS options. To reset host tunings on all clients, include the -g
clients option.
The values that are restored depend on the values specified for the -h HOSTLIST command:
◦
File serving nodes. The default file serving node host tunings are restored.
◦
X9000 clients. The host tunings that are in effect for the default clients hostgroup are
restored.
◦
Hostgroups. The host tunings that are in effect for the parent of the specified hostgroups
are restored.
To list host tuning settings on file serving nodes, X9000 clients, and hostgroups, use the
following command. Omit the -h argument to see tunings for all hosts. Omit the -n argument
to see all tunings.
ibrix_host_tune -l [-h HOSTLIST] [-n OPTIONS]
To set the communications protocol on nodes and hostgroups, use the following command.
To set the protocol on all X9000 clients, include the -g clients option.
ibrix_host_tune -p {UDP|TCP} {-h HOSTLIST| -g GROUPLIST}
To set server threads on file serving nodes, hostgroups, and X9000 clients:
ibrix_host_tune -t THREADCOUNT {-h HOSTLIST| -g GROUPLIST}
To set admin threads on file serving nodes, hostgroups, and X9000 clients, use this command.
To set admin threads on all X9000 clients, include the -g clients option.
ibrix_host_tune -a THREADCOUNT {-h HOSTLIST| -g GROUPLIST}
Tuning X9000 clients locally
Linux clients. Use the ibrix_lwhost command to tune host parameters. For example, to set the
communications protocol:
ibrix_lwhost --protocol -p {tcp|udp}
To list host tuning parameters that have been changed from their defaults:
ibrix_lwhost --list
82 Maintaining the system
Changing host tuning settings will alter file system performance. Contact HP Support