Setting the Common Link Access to Workstation (CLAW) device online failed
with an error for the read subchannel. This problem occurs, for example, if
the read subchannel used to create the CLAW group device is not defined as a
CLAW read subchannel in the hardware definitions. The CLAW read subchannel
must be for a 3088 device of type x'61' and have an even bus ID. The bus ID
of the read subchannel matches the bus ID of the CLAW device.
User response
Confirm that you are using the correct bus ID for the read subchannel. If necessary, ungroup the device and recreate it with the correct bus ID. Assure that the read subchannel has been defined correctly to the real or virtual hardware, for example, in your IOCDS or in your z/VM® configuration. Assure that a valid number of read buffers has been assigned to the device. See 'Device Drivers, Features, and Commands' for details about the read buffers. See the errno man page for information about the error code.