I/o recovery and diagnostics

A computer program product for monitoring I/O, the computer program product comprising a non-transitory computer-readable storage medium having computer-usable program code embodied therein, the computer-usable program code configured to perform the following when executed by at least one processor:

• identify a plurality of stages of an I/O process;
• monitor progress of an I/O operation as it advances through the stages of the I/O process;
• record, in a data structure associated with the I/O operation, timing information indicating time spent in each stage of the plurality of stages;
• and
• generate an error in the event the I/O operation exceeds a maximum allowable time spent in at least one stage of the plurality of stages.

A system for monitoring I/O, the system comprising:

• at least one processor;
• at least one memory device operably coupled to the at least one processor and storing instructions for execution on the at least one processor, the instructions causing the at least one processor to:
• identify a plurality of stages of an I/O process;
• monitor progress of an I/O operation as it advances through the stages of the I/O process;
• record, in a data structure associated with the I/O operation, timing information indicating time spent in each stage of the plurality of stages;
• and
• generate an error in the event the I/O operation exceeds a maximum allowable time spent in at least one stage of the plurality of stages.