INTELLIGENT CACHE WINDOW MANAGEMENT FOR STORAGE SYSTEMS

摘要

Methods and structure for intelligent cache window management are provided. The system comprises a memory and a cache manager. The memory stores entries of cache data for a logical volume. The cache manager is able to track usage of the logical volume by a host, and to identify logical block addresses of the logical volume to cache based on the tracked usage. The cache manager is further able to determine that one or more write operations are directed to the identified logical block addresses, to prevent caching for the identified logical block addresses until the write operations have completed, and to populate a new cache entry in the memory with data from the identified logical block addresses responsive to detecting completion of the write operations.

主权项

1. A system comprising:
a memory storing entries of cache data for a logical volume; and a cache manager operable to track usage of the logical volume by a host, to identify logical block addresses of the logical volume to cache based on the tracked usage, to determine that one or more write operations are directed to the identified logical block addresses, to prevent caching for the identified logical block addresses until the write operations have completed, and to populate a new cache entry in the memory with data from the identified logical block addresses responsive to detecting completion of the write operations.