Controlling the Model9 VDEV
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:
Use the STOP command (P M9VDEV) to shut down the Model9 VDEV.
When the STOP M9VDEV command is issued, the system responds as follows:
Message | Description |
|---|---|
ZM9IC039I STOP COMMAND ACCEPTED, SHUTTING DOWN
ZM9IC041I MODEL9 VDEV SHUTDOWN COMPLETE | 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 CLEANUPZM9IC041I 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:
MODIFY M9VDEV,DISABLEThe 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:
Message | Description |
|---|---|
ZM9IC072E VDEV MODIFY REJECTED, DEVICES ARE STILL ONLINE | One or more devices are still online thus the Model9 VDEV MODIFY command is rejected |
ZM9IC073I STARTIO INTERCEPTION SUCCESSFULLY DISABLED | The Model9 VDEV is disabled successfully. It is now possible to stop the Model9 VDEV successfully |
Unsupported command parameters would result in the following message:
ZM9IC015E MODIFY COMMAND REJECTED, UNKNOWN COMMAND