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At this point, oracle can't wave their magic wand, as the SFC implies, and have the software be magically gpl-compatible. Since Oracle re-closed solaris, a lot

At this point, oracle can't wave their magic wand, as the SFC implies, and have the software be magically gpl-compatible. Since Oracle re-closed solaris, a lot of other entities have branched and forked and merged code into the openzfs codebase under the cddl. So you'd have to get in contact with all those entities to get it relicensed, unless you want to work on an ancient version of ZFS.

carussell 11y ago
Not true. It doesn't matter who owns the copyright, because Sun has the keys to the kingdom and can publish a revision to the CDDL whenever they want. Forward compatibility is not something you opt-in to with the CDDL (unlike you have to do with the GPL). This is, for example, how Mozilla has been relicensed to MPL 2.0 from earlier versions of the license—which the CDDL is based on, incidentally—even though there are no "any later version" notices anywhere in the headers or other files.