Distributed file system with reduced write and read latencies

A node of a distributed storage system comprising:

• a memory;
• and
• one or more processors coupled to the memory programmed with executable instructions, the instructions including:
• a storage management subsystem for maintaining a first mapping of a logical block device to a metadata object and contributing to processing of write requests received by the node based on the first mapping;
• and
• a data management subsystem for maintaining a second mapping of a file system volume to a set of logical block addresses in the logical block device and for contributing to processing of the write requests based on the second mapping, wherein the second mapping enables co-locating of the metadata object with the file system volume on the node, and wherein co-location of the metadata object with the file system volume on the node reduces write latency associated with the processing of the write requests.

A non-transitory machine readable medium storing instructions, which when executed by one or more central processing unit resources of a distributed storage system, cause the distributed storage system to:

• for a given node of a plurality of nodes of the distributed storage system:
• reduce write latency associated with processing of write requests by co-locating a metadata object with a file system volume on the given node, wherein a first mapping, maintained by a data management subsystem of the given node, of the file system volume to a set of logical block addresses in a logical block device of a storage management subsystem of the given node enables the co-locating;
• and
• maintain within the storage management subsystem of the given node a second mapping of the logical block device to the metadata object on the given node;
• receive a write request at the data management subsystem;
• identify by the data management subsystem, the file system volume on the given node to which the write request is directed based on a volume identifier associated with the write request;
• and
• service the write request by utilizing, by the data management subsystem and the storage management subsystem the first mapping and the second mapping.