Distributed file system with disaggregated data management and storage management layers

A distributed storage system comprising:

• a means for initializing a relocation by identifying a destination node of a plurality of nodes, collectively representing the distributed storage system, for relocation of a corresponding set of objects in a cluster database in which the corresponding set of objects includes a logical block device, a corresponding logical aggregate, and a corresponding file system volume;
• a means for relocating the corresponding set of objects to the destination node, wherein the corresponding logical aggregate is relocated after the logical block device and the corresponding file system volume is relocated after the logical aggregate;
• and
• a means for changing a state of each of the corresponding set of objects to offline prior to performing the relocation and for changing the state of each of the corresponding set of objects to online after completion of the relocation.

A distributed storage system comprising:

• a data management subsystem performing file and data management functions and identifying a logical block device associated with a file system volume that corresponds to a write request received at the data management subsystem;
• and
• a storage management subsystem, operating separately from but in communication with the data management subsystem, performing storage and block management functions, forming a plurality of data blocks associated with the logical block device based on the write request and distributing the plurality of data blocks across a plurality of node block stores in a distributed block layer,
• wherein each of the plurality of node block stores corresponds to a different node of a plurality of nodes in the distributed storage system.

A method comprising:

• independently configuring a set of one or more subsystems of each file system instance of a plurality of file system instances, collectively representing a distributed file system, on respective nodes of a plurality of nodes of a distributed storage system;
• identifying a logical block device to which a file system volume is mapped, wherein the file system volume is associated with a write request received at a data management subsystem of the distributed storage system that performs file and data management functions;
• and
• distributing a plurality of data blocks formed based on the write request across a plurality of node block stores associated with a distributed block layer of a storage management subsystem of the distributed storage system that performs storage and block management functions, wherein each of the plurality of node block stores corresponds to a different node of the plurality of nodes.