NBD — Network Block Device — is a protocol for accessing Block Devices (hard disks and disk-like things) over a Network.
This is the NBD client library in userspace, a simple library for writing NBD clients.
The key features are:
Synchronous and asynchronous APIs, both for ease of use and for writing non-blocking, multithreaded clients.
High performance.
Minimal dependencies for the basic library.
Well-documented, stable API.
Bindings in several programming languages.