6.2 HP IBRIX 9300/9320 Storage Administrator Guide (AW549-96049, December 2012)

Tuning file serving nodes from the CLI
All Fusion Manager commands for tuning hosts include the -h HOSTLIST option, which supplies
one or more host groups. Setting host tunings on a host group 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 host group.
CAUTION: Changing host tuning settings alters file system performance. Contact HP Support
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 host groups:
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 host groups:
ibrix_host_tune -U {-h HOSTLIST|-g GROUPLIST} [-n OPTIONS]
To reset all options on all file serving nodes, host groups, and 9000 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.
◦ 9000 clients. The host tunings that are in effect for the default clients host group are
restored.
◦ Hostgroups. The host tunings that are in effect for the parent of the specified host groups
are restored.
• To list host tuning settings on file serving nodes, 9000 clients, and host groups, 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 host groups, use the following command.
To set the protocol on all 9000 clients, include the -g clients option.
• ibrix_host_tune -p {UDP|TCP} {-h HOSTLIST| -g GROUPLIST}
• To set server threads on file serving nodes, host groups, and 9000 clients:
ibrix_host_tune -t THREADCOUNT {-h HOSTLIST| -g GROUPLIST}
• To set admin threads on file serving nodes, host groups, and 9000 clients, use this command.
To set admin threads on all 9000 clients, include the -g clients option.
ibrix_host_tune -a THREADCOUNT {-h HOSTLIST| -g GROUPLIST}
Tuning 9000 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:
94 Maintaining the system