6.0 HP X9320 Network Storage System Administrator Guide (AW542-96009, December 2011)

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
See the ibrix_lwhost command description in the HP X9000 File Serving Software CLI Reference
Guide for other available options.
Migrating segments
To improve cluster performance, segment ownership can be transferred from one host to another
through segment migration. Segment migration transfers segment ownership but it does not move
segments from their physical locations in networked storage systems. Segment ownership is recorded
on the physical segment itself, and the ownership data is part of the metadata that the management
console distributes to file serving nodes and X9000 clients so that they can locate segments.
Migrating specific segments
Use the following command to migrate ownership of the segments in LVLIST on file system FSNAME
to a new host and update the source host:
<installdirectory>/bin/ibrix_fs -m -f FSNAME -s LVLIST -h HOSTNAME [-M] [-F] [-N]
To force the migration, include -M. To skip the source host update during the migration, include
-F. To skip host health checks, include -N.
The following command migrates ownership of ilv2 and ilv3 in file system ifs1 to s1.hp.com:
<installdirectory>/bin/ibrix_fs -m -f ifs1 -s ilv2,ilv3 -h s1.hp.com
Migrating all segments from one host to another
Use the following command to migrate ownership of the segments in file system FSNAME that are
owned by HOSTNAME1 to HOSTNAME2 and update the source host:
Migrating segments 69