Three refusals

Ktema

A medium that refuses a write, a worn medium, and a channel that holds a write past the end of the run.

A terminal replaying the fault check: three runs that each report what the run believed and what the medium holds.

Three runs that leave the medium in a state a restart has to read: a medium that refuses a write and then stops, a medium that refuses from a point onwards, and a channel that holds a write past the end of the run.

What the check reads is the medium rather than the report. A second run opens the same volume and counts, which is what a restart after a power loss does, and every medium left behind opens cleanly.

Run: verify/faults/check.sh
Recording: Open it on asciinema