Synopsis: [zfs] [panic] zfs unmount -f pool State-Changed-From-To: open->feedback State-Changed-By: araujo State-Changed-When: Wed May 2 17:38:46 UTC 2012 State-Changed-Why: Do you still have this problem? I performed some tests on CURRENT and it doesn't happens. http://www.freebsd.org/cgi/query-pr.cgi?pr=162083