Method for generating a data logout in a computing environment

A method of generating a data logout in a computing environment having a processor and an input/output subsystem for receiving data from and sending data to the processor, the method comprising the steps of:

• the input/output subsystem maintaining a defined set of data;
• at defined time, the processor issuing a data logout command;
• sending said data logout command to the input/output subsystem;
• and
• in response to receiving said data logout command, the input/output subsystem sending said defined set of data to a specified location, wherein:
• the input/output subsystem includes a channel subsystem and a plurality of input/output devices;
• and
• the channel subsystem includes a first channel local to the processor, and a second channel remote from the processor;
• the step of the input/output subsystem maintaining the defined set of data includes the steps of
• the first channel maintaining a first subset of the defined set of data;
• the second channel maintaining a second subset of the defined set of data;
• and
• the step of sending said defined set of data includes the step of sending the first and second subsets of the defined set of data to the specified location.

A method of deploying a computer program product for generating a data logout in a computing environment having a processor and an input/output subsystem for receiving data from and sending data to the processor, said method comprising the steps of:

• maintaining a defined set of data on the input/output subsystem;
• issuing a data logout command from the processor at defined times;
• sending said data logout command to the input/output subsystem;
• and
• sending said defined set of data to a specified location in response to the input/output subsystem receiving said data logout command;
• and wherein:
• the input/output subsystem includes a channel subsystem including a first channel local to the processor, and a second channel remote from the processor, wherein the first and second channels are connected together by a channel interface;
• the step of sending said defined set of data includes the steps of, in response to receiving said data logout command, the input/output subsystem sending a specified signal across said interface to one of said first and second channels;
• and
• in response to receiving said specified signal, said one of the first and second channels sends a subset of the defined set of data to the specified location.

A method of issuing a data logout command in a computer environment including a processor and an input/output system having a plurality of input/output devices, the method comprising the steps of:

• the processor gathering self-description data from all of said input/output devices;
• the processor, at defined times, generating a data logout command for a specified one of the input/output devices, including the step of using the self descriptive data from said specified one of the input/output devices to build the logout command;
• and
• sending the data logout command to said specified one of the input/output devices;
• and wherein:
• the input/output subsystem includes a channel subsystem including a first channel local to the processor, and a second channel remote from the processor, wherein the first and second channels are connected together by a channel interface;
• the step of sending said defined set of data includes the steps of, in response to receiving said data logout command, the input/output subsystem sending a specified signal across said interface to one of said first and second channels;
• and
• in response to receiving said specified signal, said one of the first and second channels sends a subset of the defined set of data to the specified location.