Optimizing data less writes for restore operations

摘要

A method is used in managing restore operations in storage systems. A state of a logical object is retrieved and a second logical object is placed in a pre-step mode. An instantaneous restore operation between the first logical object and the second logical object is performed. Drivers that are associated with the instantaneous restore and utilize data-less writes are identified. A granularity value representative of a size at which the identified driver tracks changes is determined. Changed data extents in the first logical object are identified. Data-less writes are sent at the lowest determined granularity to any identified extents in the first logical object.

主权项

1. A method for managing restore operations in storage systems, the method comprising:
retrieving a state of a first logical object and placing a second logical object in a pre-step mode; performing an instantaneous restore between the first logical object and the second logical object; identifying drivers associated with the instantaneous restore wherein the identified drivers utilize data-less writes; determining a granularity value for each identified driver wherein the granularity is representative of a size at which the identified driver tracks changes; identifying changed data extents in the first logical object; and sending a data-less write at the lowest determined granularity value to all changed extents identified in the first logical object.