5.5 HP StorageWorks X9720 Network Storage System Administrator Guide (AW549-96026, March 2011)

CAUTION:
Changing host tuning settings will alter 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:
<installdirectory>/bin/ibrix_host_tune -L
• To tune host parameters on nodes or hostgroups:
<installdirectory>/bin/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:
<installdirectory>/bin/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.
<installdirectory>/bin/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.
•
<installdirectory>/bin/ibrix_host_tune -p {UDP|TCP} {-h HOSTLIST| -g GROUPLIST}
• To set server threads on file serving nodes, hostgroups, and X9000 clients:
<installdirectory>/bin/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.
<installdirectory>/bin/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:
<installdirectory>/bin/ibrix_lwhost --protocol -p {tcp|udp}
To list host tuning parameters that have been changed from their defaults:
<installdirectory>/bin/ibrix_lwhost --list
Maintaining the system68