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"Do your homework before you post" As we say here in Brasil: "Who say what he wants, will listen what he doesn't wants" (or so). Sure you doesn't even try google first, if so you'd be redirected to: http://kerneltrap.org/mailarchive/openbsd-misc/2009/1/15/4733444 (zfs +openbsd -> the first link or "I'm lucky" button). That's why you get these type of answers. Fabio Almeida