Explanation
When you add a managed MDisk to an MDisk group, the new MDisk is validated to ensure that adding it to the MDisk group will not adversely impact the MDisk group status.
Either the current status of the MDisk has not allowed the validation to be performed, or the validation has failed.
Note: You cannot add Read Only or faulty MDisks to an MDisk group.
Action
- If the MDisk identity has changed since it was last discovered, submit the command-line interface command svctask detectmdisk, which might correct the problem.
- Check switch zoning and logical unit presentation on the controller to ensure that the MDisk is physically and logically connected to all of the nodes in this cluster.
- Ensure that the controller settings are correct and that the MDisk logical unit is correctly configured.
- Ensure that the MDisk logical unit state is one that passes the validation. A Read Only or faulty MDisk fails the validation.
- View the cluster error log for more information about the failed validation.