Veritas™ File System 5.0.1 Administrator's Guide

<BALANCE_SIZE Units="MB">1</BALANCE_SIZE>

</DESTINATION>

</ON>

</CREATE>

The <BALANCE_SIZE> element with a value of one megabyte is specified for

allocations on tier2 volumes. For files allocated on tier2 volumes, the first

megabyte would be allocated on the first volume, the second on the second volume,

and so forth.

RELOCATE statement

The RELOCATE action statement of file placement policy rules specifies an action

that VxFS takes on designated files during periodic scans of the file system, and

the circumstances under which the actions should be taken. The fsppadm enforce

command is used to scan all or part of a file system for files that should be relocated

based on rules in the active placement policy at the time of the scan.

See the fsppadm(1M) manual page.

The fsppadm enforce command scans file systems in path name order. For each

file, VxFS identifies the first applicable rule in the active placement policy, as

determined by the rules' SELECT statements. If the file resides on a volume specified

in the <FROM> clause of one of the rule's RELOCATE statements, and if the file meets

the criteria for relocation specified in the statement's <WHEN> clause, the file is

scheduled for relocation to a volume in the first placement class listed in the <TO>

clause that has space available for the file. The scan that results from issuing the

fsppadm enforce command runs to completion before any files are relocated.

The following XML snippet illustrates the general form of the RELOCATE statement:

<FROM>

<CLASS> placement_class_name </CLASS>

</SOURCE>

<SOURCE> additional_placement_class_specifications

</SOURCE>

</FROM>

<TO>

<CLASS> placement_class_name </CLASS>

<BALANCE_SIZE Units="units_specifier">

chunk_size

Dynamic Storage Tiering

File placement policy rules

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