Isolating the introduction of software defects in a dispersed storage network

A computing device for use in a dispersed storage network (DSN), the computing device comprises:

• an interface;
• a local memory comprising instructions;
• and
• a processing module operably coupled to the interface and the local memory, wherein the processing module executes the instructions to:
• receive, via the interface, an indication of a software operational error resulting from testing performed on a current version of a memory software code;
• in response to receiving the indication of a software operational error, identify a sequence of interim versions of the memory software code between the current version of the memory software code and a previous version of the memory software code associated with favorable software operation;
• identify a first version of the memory software code from the sequence of interim versions of the memory software code;
• facilitate a first test of the first version of the memory software code by at least one device of the DSN;
• determine if the first test results in a test failure;
• and
• in response to determining that the first test does not result in a test failure:
• identify a second version of the memory software code from the sequence of interim versions of the memory software code, where the second version of the memory software code is in a sub-sequence of the sequence of interim versions of the memory software code between the first version of the memory software code and the current version of the memory software code;
• and
• facilitate a second test, by the at least one device, of the second version of the memory software code.

A computer readable storage medium comprises:

• at least one memory section that stores operational instructions that, when executed by one or more processing modules of one or more computing devices of a dispersed storage network (DSN), causes the one or more computing devices to:
• receive an indication of a software operational error resulting from testing performed on a current version of a memory software code;
• in response to receiving the indication of a software operational error, identify a sequence of interim versions of the memory software code between the current version of the memory software code and a previous version of the memory software code associated with favorable software operation;
• identify a first version of the memory software code from the sequence of interim versions of the memory software code;
• facilitate a first test of the first version of the memory software code by at least one device of the DSN;
• determine if the first test results in a test failure;
• and
• in response to determining that the first test does not result in a test failure:
• identify a second version of the memory software code from the sequence of interim versions of the memory software code, where the second version of the memory software code is in a sub-sequence of the sequence of interim versions of the memory software code between the first version of the memory software code and the current version of the memory software code;
• and
• facilitate a second test, by the at least one device, of the second version of the memory software code.