Understanding persistent attributes

The vxassist command lets you record certain volume allocation attributes for a volume. These attributes are called persistent attributes. You can record the attributes which would be useful in later allocation operations on the volume, such as volume grow and enclosure mirroring. You can also restrict allocation to storage that has a particular property (such as the enclosure type, disk tag, or media type). On the other hand, volume length is not useful, and generally neither is a specific list of disks.

The persistent attributes can be retrieved and applied to the allocation requests (with possible modifications) for the following operations:

Persistent attributes let you record carefully-described allocation attributes at the time of volume creation and retain them for future allocation operations on the volume. Also, you can modify, enhance, or discard the persistent attributes. For example, you can add and retain a separation rule for a volume that is originally not mirrored. Alternatively, you can temporarily suspend a volume allocation rule which has proven too restrictive or discard it to allow a needed allocation to succeed.

You can use the persist attribute to record allocation attributes on the command line or in a rule file.

See Using persistent attributes.

You can manage the use and require type of persistent attributes with the intent management operations: setrule, changerule, clearrule, and listrule.

See Management of the use and require type of persistent attributes .