Simplified distributed block storage with strong consistency, like in Ceph
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  1. Copyright (c) Vitaliy Filippov (vitalif [at] yourcmc.ru), 2019+
  2. All server-side code (OSD, Monitor and so on) is licensed under the terms of
  3. Vitastor Network Public License 1.1 (VNPL 1.1), a copyleft license based on
  4. GNU GPLv3.0 with the additional "Network Interaction" clause which requires
  5. opensourcing all programs directly or indirectly interacting with Vitastor
  6. through a computer network and expressly designed to be used in conjunction
  7. with it ("Proxy Programs"). Proxy Programs may be made public not only under
  8. the terms of the same license, but also under the terms of any GPL-Compatible
  9. Free Software License, as listed by the Free Software Foundation.
  10. This is a stricter copyleft license than the Affero GPL.
  11. Please note that VNPL doesn't require you to open the code of proprietary
  12. software running inside a VM if it's not specially designed to be used with
  13. Vitastor.
  14. Basically, you can't use the software in a proprietary environment to provide
  15. its functionality to users without opensourcing all intermediary components
  16. standing between the user and Vitastor or purchasing a commercial license
  17. from the author 😀.
  18. Client libraries (cluster_client and so on) are dual-licensed under the same
  19. VNPL 1.1 and also GNU GPL 2.0 or later to allow for compatibility with GPLed
  20. software like QEMU and fio.
  21. You can find the full text of VNPL-1.1 in the file [VNPL-1.1.txt](VNPL-1.1.txt).
  22. GPL 2.0 is also included in this repository as [GPL-2.0.txt](GPL-2.0.txt).