MANAGING A STORAGE SYSTEM

摘要

A method, system, and computer program product for managing a storage facility is disclosed. The methodology detects a potential file overlay when performing a file transfer. When a file is common to multiple systems and resides on a shared system storage volume, potential file corruption due to a data transfer request is detected and then able to be prevented. Hardware identifiers such as Universal Unique Identifiers (UUIDs) are used in managing a write of a file to shared system storage. By comparing multiple hardware identifiers, a determination is made as to whether to process the write of the file. If the hardware identifiers mismatch, the write is processed. If the hardware identifiers match, a potential file overlay is detected. Because of the potential file overlay, the write is stopped or a failure notification is returned.

主权项

1. A computer-implemented method for managing a write of a file of a shared storage system, the method comprising:
initiating the write from a client to the shared storage system having a first hardware identifier for the file with respect to the client; transmitting from the client to a peer, in response to initiating the write from the client to the shared storage system, a request for a second hardware identifier for the file with respect to the peer; receiving by the client from the peer, in response to transmitting from the client to the peer the request for the second hardware identifier, the second hardware identifier; and determining, by comparing the first hardware identifier with the second hardware identifier, whether to process the write.