US 2025/0028451 A1 · EFFICIENT MIGRATION OF LOGICAL STORAGE DEVICES WITHOUT REQUIRING INITIAL APPLICATION RECONFIGURATION

Abstract

An apparatus in an illustrative embodiment implements a proxy device for a first logical storage device. The proxy device inserts tags into respective received input-output (IO) operations before directing those IO operations to the first logical storage device. The apparatus further implements a mirror device to provide a mirroring arrangement between the proxy device and a second logical storage device. In addition, the apparatus checks, in an entry point associated with the first logical storage device, each IO operation directed to the first logical storage device for a tag inserted by the proxy device. The apparatus provides, from the entry point to the first logical storage device, any received IO operations that have the tag. Furthermore, the apparatus redirects, from the entry point to the mirror device providing the mirroring arrangement, any received IO operations that do not have the tag.

Claims20

Dependent claims

An apparatus comprising:

at least one processing device comprising a processor coupled to a memory;
the at least one processing device being configured, in conjunction with migration of data from a first logical storage device to a second logical storage device:
to implement a proxy device for the first logical storage device, the proxy device being configured to insert tags into respective received input-output operations before directing those input-output operations to the first logical storage device;
to implement a mirror device to provide a mirroring arrangement between the proxy device and the second logical storage device;
to check, in an entry point associated with the first logical storage device, each input-output operation directed to the first logical storage device for a tag inserted by the proxy device;
to provide, from the entry point to the first logical storage device, any received input-output operations that have the tag;
and
to redirect, from the entry point to the mirror device, any received input-output operations that do not have the tag.

5 more elements

A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code, when executed by at least one processing device comprising a processor coupled to a memory, causes the at least one processing device to perform a method for migrating data of a first logical storage device to a second logical storage device, the method comprising:

implementing a proxy device for the first logical storage device, the proxy device being configured to insert tags into respective received input-output operations before directing those input-output operations to the first logical storage device;
implementing a mirror device to provide a mirroring arrangement between the proxy device and the second logical storage device;
checking, in an entry point associated with the first logical storage device, each input-output operation directed to the first logical storage device for a tag inserted by the proxy device;
providing, from the entry point to the first logical storage device, any received input-output operations that have the tag;
and
redirecting, from the entry point to the mirror device, any received input-output operations that do not have the tag.

3 more elements

Dependencies are inferred from the claim text.

Efficient migration of logical storage devices without requiring initial application reconfiguration

Life of this patent

Efficient migration of logical storage devices without requiring initial application reconfiguration

Life of this patent

Abstract

Claims20