STATE-PRESERVING REVERSIBLE CONFIGURATION CHANGE

摘要

At a system configured according to a first configuration, an activity that uses a second configuration is detected. A set of changes is determined, which when applied to the first configuration result in the second configuration. State information of a second activity at the system is saved. The set of changes is applied to the first configuration to operate the system under the second configuration. The activity is performed under the second configuration until completion. A portion of the set of changes is removed from a portion of the second configuration such that the portion of the second configuration reverts to a corresponding portion of the first configuration. The second activity is resumed using the saved state information. The state information is sufficient to resume the second activity after the activity has completed and from a point reached in the second activity before the applying of the set of changes.

主权项

1. A method for state-preserving reversible configuration change, the method comprising:
detecting, at a data processing system configured according to a first configuration, an activity that uses a second configuration; determining a set of changes, wherein the set of changes when applied to the first configuration result in the second configuration; saving a state information of a second activity at the data processing system; applying the set of changes to the first configuration to operate the data processing system under the second configuration; performing the activity under the second configuration until the activity is complete; removing at least a portion of the set of changes from a portion of the second configuration such that the portion of the second configuration reverts to a corresponding portion of the first configuration; and resuming the second activity using the saved state information, wherein the state information is sufficient to resume the second activity after the activity has completed and from a point reached in the second activity before the applying of the set of changes.