US 11,693,598 B2 · Undefined target volume input/output (IO) optimization

Abstract

Aspects of the present disclosure relate to improving response rates of input/output (IO) requests targeting undefined virtual storage devices. In embodiments, an (IO request can be received by a storage array. Additionally, a determination of whether the IO request targets an undefined target track can be made. Further, source data related to the IO request can be located. For instance, a direct image lookup (DIL) can be performed to locate the source data. Also, a storage-related operation on the undefined target track can be performed using instructions provided by the IO request, such as updating a version of the undefined track. Further, a storage resource allocation for the undefined target track can be destaged.

Claims18

Dependent claims

A method, comprising:

receiving an input/output (IO) request by a storage array;
determining if the IO request is targeting an undefined target track;
locating source data related to the IO request, wherein locating the source data includes performing a direct image lookup (DIL);
modifying the IO request to include source data information in the undefined target track's metadata and to insert the source information in the undefined target track's metadata by adding write metadata instructions to the IO request;
performing a storage-related operation on the undefined target track using instructions provided by the IO request, wherein the storage-related operation includes updating a version of the undefined track;
and
destaging a storage resource allocation for the undefined target track.

4 more elements

Dependencies are inferred from the claim text.

Undefined target volume input/output (IO) optimization

Life of this patent

Undefined target volume input/output (IO) optimization

Life of this patent

Abstract

Claims18