US 2025/0225035 A1 · FULL SNAPSHOT SELECTION FOR REVERSE OPERATIONS

Abstract

Methods, systems, and devices for data management are described. In some systems, a data management system (DMS) may obtain a full snapshot of a data block and incremental snapshots that include data associated with changes to partitions of the data block since the full snapshot. The full snapshot and the incremental snapshots may be stored as a snapshot chain. A most recently obtained incremental snapshot in the chain may be marked for deletion. Accordingly, the DMS may select, from the snapshot chain, an incremental snapshot to convert to a new full snapshot as part of a reverse operation. The incremental snapshot may be a next most recent incremental snapshot in the snapshot chain that is not marked for deletion. The DMS may perform the reverse operation to reverse an order of the snapshot chain and convert the incremental snapshot to the new full snapshot.

Claims20

Dependent claims

A method, comprising:

obtaining a full snapshot of a data block and a plurality of incremental snapshots that comprise data associated with changes to partitions of the data block since the full snapshot, wherein the full snapshot and the plurality of incremental snapshots are stored as a snapshot chain;
selecting, from the snapshot chain and based at least in part on a most recent incremental snapshot in the snapshot chain being marked for deletion, an incremental snapshot to convert to a new full snapshot as part of a reverse operation, wherein selecting the incremental snapshot is based at least in part on the incremental snapshot being a next most recent incremental snapshot in the snapshot chain that is not marked for deletion;
and
performing the reverse operation to reverse an order of the snapshot chain to convert the incremental snapshot to the new full snapshot.

1 more element

An apparatus, comprising:

one or more memories storing processor-executable code;
and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the apparatus to:
obtain a full snapshot of a data block and a plurality of incremental snapshots that comprise data associated with changes to partitions of the data block since the full snapshot, wherein the full snapshot and the plurality of incremental snapshots are stored as a snapshot chain;
select, from the snapshot chain and based at least in part on a most recent incremental snapshot in the snapshot chain being marked for deletion, an incremental snapshot to convert to a new full snapshot as part of a reverse operation, wherein selecting the incremental snapshot is based at least in part on the incremental snapshot being a next most recent incremental snapshot in the snapshot chain that is not marked for deletion;
and
perform the reverse operation to reverse an order of the snapshot chain to convert the incremental snapshot to the new full snapshot.

4 more elements

A non-transitory computer-readable medium storing code, the code comprising instructions executable by one or more processors to:

obtain a full snapshot of a data block and a plurality of incremental snapshots that comprise data associated with changes to partitions of the data block since the full snapshot, wherein the full snapshot and the plurality of incremental snapshots are stored as a snapshot chain;
select, from the snapshot chain and based at least in part on a most recent incremental snapshot in the snapshot chain being marked for deletion, an incremental snapshot to convert to a new full snapshot as part of a reverse operation, wherein selecting the incremental snapshot is based at least in part on the incremental snapshot being a next most recent incremental snapshot in the snapshot chain that is not marked for deletion;
and
perform the reverse operation to reverse an order of the snapshot chain to convert the incremental snapshot to the new full snapshot.

1 more element

Dependencies are inferred from the claim text.

Full snapshot selection for reverse operations

Life of this patent

Full snapshot selection for reverse operations

Life of this patent

Abstract

Claims20