Hey SCSI experts, Am I right to assume that /all/ SBC commands (I'm interested in READ CAPACITY) should return CONFLICT to an unregistered I_T nexus when the device server has Persistent Reservation, Exclusive Access - Registrants Only? I have access to SPC-4; table 66 only talks about SPC commands. If so, I think it might make sense to call sd_revalidate_disk() directly after a successful pr_register. Ben