POINT IN TIME SNAPSHOTS USING COPY ON PREDICTED WRITE

摘要

Systems and methods of writing to a storage system comprise analyzing a plurality of snapshots of data blocks of a storage device and determining a likelihood that a next first write will be to a respective data block based, at least in part, on the analyzed plurality of snapshots. A snapshot is then taken of a selected data block based, at least in part, on the respective likelihood for the selected data block, before receiving a write request to the selected data block. A write request to a respective data block is then received and data is written to the respective data block, if the snapshot of the respective data block had been taken. If the snapshot of the respective data block had not been taken, then a snapshot of the respective data block. Then data is written to the respective data block.

主权项

1. A method of writing to a storage system, comprising:
analyzing a plurality of snapshots of data blocks of a storage device; determining a likelihood that a next first write will be to a respective data block based, at least in part, on the analyzed plurality of snapshots; taking a snapshot of a selected data block based, at least in part, on the respective likelihood for the selected data block, before receiving a write request to the selected data block; receiving a write request to the respective data block; and writing data to the respective data block, if the snapshot of the respective data block has been taken.