Patent ID: 8874862
Filing Date: 2014-10-28
Classification: G06F

Abstract:
1. A method, comprising: storing, via one or more processors, a plurality of logical volumes, at a plurality of sites; receiving, a point in time copy command to execute an operation on a logical volume, wherein the point in time copy command has a first parameter that indicates a source logical volume, a second parameter that indicates a target logical volume, and a third parameter that is a logical volume rule override flag that indicates whether or not a rule associated with the logical volume is to be overridden by the point in time copy command; in response to determining from the logical volume rule override flag that the rule associated with the logical volume is to be overridden by the point in time copy command, executing the operation on the logical volume irrespective of any restriction placed by the rule on the logical volume; in response to determining that the logical volume override flag is set to a default value to indicate that the rule associated with the logical volume is not to be overridden by the point in time copy command, processing the rule associated with the logical volume to determine whether the operation is to be executed on the logical volume; determining, whether the rule associated with the logical volume permits execution of the operation on the logical volume, wherein the rule is stored in a logical volume rules data structure; in response to determining that the rule associated with the logical volume permits execution of the operation on the logical volume, executing the operation on the logical volume; and in response to determining that the rule associated with logical volume does not permit execution of the operation on the logical volume, avoiding executing the operation on the logical volume.