System and method for simulating a persistent byte addressable storage device on a persistent block addressable storage device

A system comprising:

• a processor;
• a block-addressable storage device coupled to the processor and configured to simulate a byte-addressable storage device, the block-addressable storage device embodied as persistent storage;
• and
• a memory coupled to the processor and configured to store a storage operating system including a driver, a portion of the memory allocated as a staging area to temporarily store a request and data destined for the persistent storage, the driver implemented as one or more threads executable by the processor to:
• organize the staging area as one or more regions to facilitate buffering of the request and the data;
• and
• copy the data to the staging area using an interface configured to pass the request to the driver and configured to ensure that an order of changes to the data in the persistent storage is consistent with the order of arrival of the changes at the driver.

A non-transitory computer readable medium including program instructions for execution on one or more processors, the program instructions when executed operable to:

• log an incoming request over a stream in response to processing of one or more operations by a software module of a storage system;
• pass the incoming request to a driver of the storage system using an access interface with arguments;
• examine the arguments of the access interface to determine whether ordering of the incoming request with respect to one or more requests is specified within the stream or among other streams;
• organize the incoming request with the one or more requests in one or more lists of dependencies and their types;
• if ordering is specified, process the incoming request in an order that ensures that data of all dependent requests are persistently stored on a block-addressable storage device prior to or coincident with persistent storage of incoming data of the incoming request;
• and
• persistently store the incoming data on the block-addressable storage device configured to simulate a byte-addressable storage device.