The Model9 VDEV started task (STC), usually called M9VDEV, is responsible for intercepting certain I/O operations related to the virtual devices of the Model9 Cloud Data Sets, such as handling VARY ONLINE and VARY OFFLINE for those devices.
The Model9 VDEV STC accepts two operator commands:
The Model9 VDEV stop command is accepted and it's now shut down
ZM9IC017E STOP COMMAND REJECTED, ONE OR MORE VDEV DEVICES ARE STILL ONLINE
One or more devices are still online thus the Model9 VDEV STOP command is rejected
ZM9IC011E STOP COMMAND REJECTED, OTHER STARTIO HOOK INSTALLED AFTER VDEV, DISABLE VDEV OR REMOVE OTHER HOOK FIRST
Another application is intercepting the z/OS STARTIO after the Model9 VDEV.
Disable the Model9 VDEV using the MODIFY command or remove the other application first
ZM9IC028W STOP COMMAND ACCEPTED, SHUTTING DOWN WITH PARTIAL RESOURCE CLEANUP
ZM9IC041I MODEL9 VDEV SHUTDOWN COMPLETE
Another application is intercepting the z/OS STARTIO after the Model9 VDEV, but the VDEV was disabled with the MODIFY command. The Model9 VDEV is shut down with partial resource cleanup
The MODIFY command accepts the following parameters:
The command disables the Model9 VDEV interception and will allow stopping the VDEV in cases where other applications are intercepting the z/OS STARTIO after the Model9 VDEV.
Issuing the command could result in one of the following:
ZM9IC072E VDEV MODIFY REJECTED, DEVICES ARE STILL ONLINE
One or more devices are still online thus the Model9 VDEV MODIFY command is rejected