File system interface for remote direct memory access

A non-transitory computer-readable medium storing instructions, which when executed by a processing device, cause the processing device to perform a method comprising:

• intercepting a first operating system request to open a file from an application running on a first node, the request including a file identifier;
• transmitting the file identifier to a remote memory manager;
• receiving, from the remote memory manager in response to the file identifier, a memory location within a second node for the file identifier and information to establish a remote direct memory access channel between the first node and the second node;
• in response to the first operating system request to open the file, establishing the remote direct memory access channel between the first node and the second node, wherein the remote direct memory access channel allows the first node to read directly from or write directly to the memory location within the second node while bypassing an operating system of the second node;
• storing, within the first node, a mapping of the file identifier to the second node memory location and the remote direct memory access channel;
• intercepting a second operating system request to read or write the file from the application running on the first node, the request to read or write the file including the file identifier;
• accessing the stored mapping of the file identifier to the remote direct memory access channel;
• and
• executing the request to read or write the file using the remote direct memory access channel.

A first node comprising:

• a processing device;
• and
• a memory coupled to the processing device, the memory storing instructions which, when executed by the processing device, cause the first node to:
• intercept a first operating system request to open a file from an application running on the first node, the request including a file identifier;
• transmit the file identifier to a remote memory manager;
• receive, from the remote memory manager in response to the file identifier, a memory location within a second node for the file identifier and information to establish a remote direct memory access channel between the first node and the second node;
• in response to the first operating system request to open the file, establish the remote direct memory access channel between the first node and the second node, wherein the remote direct memory access channel allows the first node to read directly from or write directly to the memory location within the second node while bypassing an operating system of the second node;
• storing, within the first node, a mapping of the file identifier to the second node memory location and the remote direct memory access channel;
• intercepting a second operating system request to read or write the file from the application running on the first node, the request to read or write the file including the file identifier;
• accessing the stored mapping of the file identifier to the remote direct memory access channel;
• and
• executing the request to read or write the file using the remote direct memory access channel.