Transparent north port recovery

A system for transparent north port recovery of an error in a hardware device, the system comprising:

• a memory having computer readable instructions;
• and
• a processing device for executing the computer readable instructions, the computer readable instructions comprising:
• detecting, by the processing device, a command timeout;
• sending, by the processing device, an input/output (I/O) error signal via a north port of the hardware device to cause a link at the north port of the hardware device to be terminated;
• enabling, by the processing device, halt command forwarding on the hardware device upon the termination of the link;
• halting, by the processing device, commands upon detecting the halt command forwarding;
• and
• resetting, by the processing device, the link,
• wherein the hardware device comprises a test pervasive unit (TPU) that sends the I/O error signal to the host processing system via the north port of the hardware device.

A computer program product for transparent north port recovery of an error in a hardware device, the computer program product comprising:

• a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processing device to cause the processing device to perform a method comprising:
• detecting, by the processing device, a command timeout;
• sending, by the processing device, an input/output (I/O) error signal via a north port of the hardware device to cause a link at the north port of the hardware device to be terminated;
• enabling, by the processing device, halt command forwarding on the hardware device upon the termination of the link;
• halting, by the processing device, commands upon detecting the halt command forwarding;
• and
• resetting, by the processing device, the link between the north port of the hardware device and the host processing system,
• wherein the hardware device comprises a test pervasive unit (TPU) that sends the I/O error signal to the host processing system via the north port of the hardware device.