There is debate as to whether the FreeZFS license (CDDL) is compatible with the GPL, which is why FreeZFS is not part of the Linux Kernel. Some distros are baking it in, but there has long been concern about if merging it violates the license or not.
There is debate as to whether the FreeZFS license (CDDL) is compatible with the GPL, which is why FreeZFS is not part of the Linux Kernel. Some distros are baking it in, but there has long been concern about if merging it violates the license or not.
They took the entire Solaris code back to proprietary source and kept improving ZFS themselves. For instance, they added encryption.