Syindication
Proposing Read-Only ZFS
A recent thread on the lkml discussed a blog entry stating that minimal ZFS support for GRUB was available under the GPL license, "we could now use that code to implement support for ZFS in the Linux kernel." Alan Cox explained, "no we can't. The GPL ZFS bits don't include the various methods that would violate the patent so there is no grant. I've several times asked Sun to simply give permission and they don't even answer. I can only read the Sun motivation one way - they want to look open but know that ZFS is about the only thing that might save Solaris as a product in the data centre so are not truly prepared to let Linus use it." H. Peter Anvin added, "from what I can see, it is an absolutely-minimal read only implementation."
Christoph Hellwig offered, "adding a read-only for the start zfs driver for Linux would be useful for various purposes. And adding read-only filesystems to Linux is really easy." Referring to the individual who started the discussion, he added, "if Fred really cares about it I'd be very happy to mentor him implementing it. It should be a very good learning exercise for him." When asked if this offer applied to anyone else, Christoph replied, "yes, this offer is of course up to everyone interested. But it's not purely an integration effort in the traditional sense, the grub filesystem interface is quite different from the Linux one, and the code structure and style is quite different. But if you're willing to learn it should be very interesting."
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