It's a no to ZFS in the Linux kernel from me, says Torvalds, points finger of blame at Oracle licensing
https://www.theregister.co.uk/2020/01/13/zfs_linux/
Linux kernel jockey, Linus Torvalds, has taken time out to remind open source loyalists that he is no fan of the ZFS file system due, in part, to the sometimes tortuous nature of open source licensing.
Torvalds was responding to a question late last week regarding a recent update to the Linux kernel breaking the third party ZFS module.