STORAGE SYSTEM WITH APPLICATION TO NVM ADDRESS, SPAN, AND LENGTH

摘要

Methods, systems and computer-readable storage media for determining, by a storage controller, a read unit address and encoded length information of one of the plurality of read units of a non-volatile memory (NVM) based at least in part on a page address of a particular one of a plurality of pages in a storage space address. The encoded length information may be decoded. The storage controller may determine a span specifying an integer number of the read units and a length in units having a finer granularity than the read units based at least in part on the page address. The storage controller may read data associated with the particular page based at least in part on the read unit address and the span. The storage controller may update space usage information of the NVM based at least in part on the length.

主权项

1. A storage system comprising:
a device interface communicatively coupled to a non-volatile memory (NVM), the NVM comprising a plurality of read units; and a storage controller communicatively coupled to the NVM via the device interface, the storage controller configured to
determine a read unit address and encoded length information of one of the plurality of read units of the NVM based at least in part on a page address of a particular one of a plurality of pages in a storage space address;decode the encoded length information;determine a span specifying an integer number of the read units and a length in units having a finer granularity than the read units based at least in part on the page address;read data associated with the particular page based at least in part on the read unit address and the span; andupdate space usage information of the NVM based at least in part on the length.