Hi, the tape reporting a cu_type of 3990 looks very odd... how does the device show up in /proc/subchannels?
Also, /proc/s390dbf/cio_msg/sprintf might hold some interesting info after the attach of the device. Mit freundlichen Grüßen/Regards Cornelia Huck Linux for zSeries Development IBM Deutschland Entwicklung GmbH Email: [EMAIL PROTECTED] Phone: ext. +49(0)7031/16-4837, int. *120-4837