In order to prevent the so-called "poor man''s cluster" from corrupting your data, we now store the hostid and verify it upon importing a pool. Check it out at: http://blogs.sun.com/erickustarz/entry/poor_man_s_cluster_end This is bug: 6282725 hostname/hostid should be stored in the label Available in snv_63, and is aiming for s10u5. eric