> There's nothing logged in the logs after the journal commit error because the > kernel makes the drive read-only at that point. Most of the time I'm not able > to run anything either - I just get a generic "input/output" error message. I > haven't tried running dmesg when the problem happens; would anything useful > come out of that? Probably yes. It will at least give a good idea of the problem. Without that its guesswork. Alan