Utilizing a lock manager for a cluster-level write back cache

A system, comprising:

• at least one processor;
• and
• at least one memory that stores executable instructions that, when executed by the at least one processor, facilitate performance of operations, comprising:
• maintaining a filesystem across nodes of a cluster, where respective nodes of the nodes are configured to read and write on any other node of the nodes;
• based on receiving a first request from a first node of the nodes to ingest data or to write the data to a location on a second node of the nodes, issuing, by a lock manager and to the first node, a write lock on the location of the second node;
• based on the first node receiving the write lock, writing, by the first node, the data to a write back cache of the first node while refraining from writing the data to the location on the second node;
• and
• before the first node flushes the write back cache, comprising writing the data to the location of the second node, responding, by the lock manager, to a second request to read the location on the second node with a read lock that indicates reading the data in the write back cache on the first node.