On Mon, 23 Mar 2015, Marc Joliet wrote: > > > > Please capture a couple of usbmon traces showing what happens during a > > > > connect when the wrong sector size is detected and a connect when the > > > > right sector size is detected. You can post the traces here (if there > > > > is a lot of repetitious stuff after the beginning, you can trim it out) > > > > or post them somewhere for people to see. > > > > > > I'm still in the process of doing this, it turns out it's not so easy: > > > > > > - If I try to run usbmon as early as possible (as a systemd unit, but maybe > > > there's a better way?) to catch the drive when the wrong sector size is > > > detected, I have a lot of stuff to trim from the logs, such as keyboard input > > > and mouse movement (which I'm doing now). Do the logs give information about > > > which keys are pressed? It's doubtful whether you can run usbmon early enough to capture communications with devices that are present when the system boots. > > Looks like I can answer my own question: yes, at least each key is easily > > differentiated by what is IIUC its data stream. > [...] > > I think I've got this done. I removed messages from bus 1 and 2, which contain > my mouse and keyboard. Instead of removing messages from buses 1 and 2, you can simply capture the messages from the bus that the drive is attached to. > Without trying to trim duplicate messages, the resulting > log is 3937 lines long and 324K large. Everything up to line 1229 is from the > initial connect, the rest from the reconnect. I left some kernel messages in > there for context. Trimmings are marked with "[...]". What kernel messages are you talking about? usbmon output doesn't contain any kernel messages. > Is that manageable enough, or should I trim it further before sending? Also, > should I send it compressed, or in plain-text? Try trimming it down to the first 200 lines or so following each connection. If that's not enough I'll let you know. Plain text is okay. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
