US Patent 9760290 Smart volume manager for storage space usage optimization

A computer-implemented method, system, and/or computer program product optimizes storage space usage. One or more processor, which implement a Smart Volume Manager, receive an input/output (I/O) client process that requests an I/O action from a file system storage device. In response to determining that the file system storage device is operating at 100% capacity, the Smart Volume Manager generates a dynamic virtual buffer disk group from multiple donor disk groups, and then redirects the I/O client process to the dynamic virtual buffer disk group, which is appended to the file system storage device to create an extended filesystem volume.