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N1 Grid Service Provisioning System 5.0 XML Schema Reference Guide

Changes to <snapshot> Blocks

The following table shows the changes that can be made to the <prepare>, <cleanup>, or <capture> child elements of the <snapshot> element and indicates whether each change is call compatible or install compatible. <snapshot> blocks generally have the same compatibility matrix as the other blocks, except when dealing with their <prepare>, <capture>, and <cleanup> blocks.

Type of Change 

Install Compatible 

Call Compatible 

Add, modify, or remove a <prepare> or <cleanup> block

Yes 

Yes 

Add, modify, or remove a <capture> step

Yes [The contents of the snapshot <capture> block are evaluated only one time. The evaluation takes place when the snapshot is taken during initial installation. At comparison time, the stored capture contents are used to drive the comparison, ignoring any changes that might have occurred to the <capture> block. Thus, the existing snapshot is not affected by such a change. If the intent of the change was to affect the contents of the existing snapshot, this change must be modeled as a change that is not install compatible.]

Yes