6.2 HP IBRIX 9000 Storage CLI Reference Guide (TA768-96070, December 2012)

To set the policy for files, omit the -R option. To set the policy for directories, include the -R option.
Reset the specified hosts or host groups to the default allocation policy for the file system:
ibrix_fs_tune -f FSNAME {-h HOSTLIST|-g GROUPLIST} -p -U
Prefer a pool of segments for the specified hosts or host groups:
ibrix_fs_tune -f FSNAME {-h HOSTLIST|-g GROUPLIST} -s LVNAMELIST
The segments to be included in the pool are specified by logical volume name (LVNAMELIST).
To prefer a pool of segments for NFS/SMB clients, specify only NFS/SMB servers in the HOSTLIST.
To prefer a pool of segments for IBRIX 9000 clients, either specify IBRIX 9000 clients in the
HOSTLIST, or specify a host group in the GROUPLIST. To prefer all IBRIX 9000 clients, specify
the clients host group.
Prefer a pool of segments on specified file serving nodes or host groups in accordance with the -S
option:
ibrix_fs_tune -f FSNAME {-h HOSTLIST|-g GROUPLIST} -S
{SEGNUMLIST|ALL|LOCAL}
• SEGNUMLIST: Takes a list of segment names.
• ALL: A keyword that allows clients to write to any segment on the listed file serving nodes.
This restores the default segment preferences for the clients.
• LOCAL: A keyword that allows clients to write only to the local segments on the specified file
serving nodes.
To prefer a pool of segments for NFS/SMB clients, specify only NFS/SMB servers in the HOSTLIST.
To prefer a pool of segments for IBRIX 9000 clients, lists the IBRIX 9000 clients in HOSTLIST or
specify a host group in the GROUPLIST. To prefer all IBRIX 9000 clients, specify the clients
host group.
Prefer a tier for the specified hosts or host groups:
ibrix_fs_tune -f FSNAME {-h HOSTLIST | -g GROUPLIST} -t TIERNAME
Tune allocation policy storage settings globally on the specified file system:
ibrix_fs_tune -f FSNAME -O [-p POLICY] [-S STARTSEGNUM] [-P prealloc
(KB)] [-r readahead (KB)] [-N NFS readahead (KB)]
The following settings can be tuned:
• Default allocation policy for all hosts
• Default starting segment number for applying settings
• Number of KB to allocate for a file at one time (prealloc)
• Number of KB that IBRIX software will pre-fetch (readahead)
• Number of KB that IBRIX software will pre-fetch under NFS (NFS readahead)
The default for prealloc is 256 KB. The defaults for readahead and NFS readahead are
128 KB.
List preferred segments or allocation policy for the specified hosts, host groups, or file system:
ibrix_fs_tune -l [-h HOSTLIST | —g GROUPLIST] [-f FSNAME]
The -S option lists preferred segments. The -P option lists allocation policy. The command also
lists the state of the allocation policy storage settings.
List the preferred segments on the specified file serving nodes or host groups:
ibrix_fs_tune {-h HOSTLIST|-g GROUPLIST} -l -S
Enable 32-bit compatibility mode:
ibrix_fs_tune -c -e -f FSNAME
76 IBRIX software commands