dasd-eckd.b22b7e <bus ID of the DASD>: An I/O request was rejected because writing is inhibited
Explanation
An I/O request was returned with an error indication of 'command reject'
and 'write inhibited'. The most likely reason for this error is a
failed write request to a device that was attached as read-only in z/VM.
User response
Set the device offline, ensure that the device is configured correctly in
z/VM, then set the device online again.