Re: [LSF/MM/BPF ATTEND][LSF/MM/BPF TOPIC] : blktests: status, expansion plan for the storage stack test framework

Bart Van Assche
2026-02-13T17:30:30Z

On 2/11/26 11:57 PM, Johannes Thumshirn wrote:
> One thing that comes to my mind (and that I always wanted to do for
> fstests but didn't for $REASONS) is adding per-test code coverage
> information.

Code coverage information is useful but it's important to keep in mind
that 100% code coverage (which is very hard to achieve) does not
guarantee code correctness. There are many state machines in the block
layer and also in block drivers. Code coverage information does not
reveal what percentage of the states of state machines has been
triggered.

Bart.