Comment 2 for bug 2037574

Reading the code, it seems like after one has completed ubiquity install.
Without shutting down the machine.
One should be able to unmount /target in full, and luksClose all the things.
And then straight away test if one can luksOpen again using main password, recovery password, or recovery key-file. And there at least appears UI to set either recovery password or recovery keyfile.
The final null-byte/new-line is not quite obvious, i.e. if there is one byte missing potentially off the recovery password or not.