Lee, Maybe a stupid question, but have you compared the minidisk definitions on both Linuxes and checked if all the different layers say R/W ?
>From each Linux: # vmcp q v <address> # vmcp q md <address> location # cat cat /sys/devices/css*/*/0.0.<address>/readonly Also, I hope your planning to use a shared directory and at least xlink protection between your z/VM systems for the shared volumes. Ronald van der Laan ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390