System and method for implementing data migration while preserving security policies of a source filer

Abstract

A data migration system in which security policies of a source file system are preserved, in an environment in which clients actively issue communications for the source filer while data is migrated to a destination file system.

What is claimed is: 
     
         1 . A method for implementing a data migration, the method being implemented by one or more processors and comprising:
 implementing a data migration in which data is migrated from a source file system to a destination file system;   identifying individual clients who direct communications to the source file system while the data migration is in progress;   determining a set of credentials for each identified client;   issuing, on behalf of each identified client and from a location that is external to the source file system, a request to the source file system to access a reference file system object, the reference file system object being associated with a known permission level;   determining a permission level of each client based on a response from the source file system;   implementing a security policy of the source file system for each client when, during the data migration, data from the destination file system is used to provide a response to a file system operation originating from any of the plurality of clients.