If you're afraid of Oracle suing Debian for doing less than Oracle themselves do for profit (with linux+dtrace), you could get the distribution from zfsonlinux.

If you're afraid of Oracle suing Debian for doing less than Oracle themselves do for profit (with linux+dtrace), you could get the distribution from zfsonlinux.org. Then the risk is transferred to .gov, who are also significant end users for enormous high-performance parallel filesystems. They have also been distributing binaries for RHEL-ish kernels for a while.