On Sun, 13 Jul 2014 08:04:54 -0700, Guenter Roeck wrote: > On 07/13/2014 12:21 AM, Jean Delvare wrote: > > Hi Guenter, > > > > On Sat, 12 Jul 2014 08:05:49 -0700, Guenter Roeck wrote: > >> Any idea how we could inject errors ? Error path testing would be quite useful. > > > > Good idea. This should probably be done with a sysfs attribute so that > > it can be turned on and off as desired. Off by default, of course. Some > > other subsystems already support error injection, you could check how > > they are doing it, do that we do not diverge needlessly. > > > > Do you think there is any value in failing with different error codes, > > or just -EIO is enough? > > How about writing the error code to return into the attribute ? > Write anything negative, and it is returned as error. Write 0, > and the driver works as normal. This is smart, I like it :) > > Do you think it should fail all the time when error injection is > > enabled, or is there a value in having only a certain % of commands > > fail? > > For my purposes I would want it to fail reliably. We could add some fanciness, > though: Provide a second attribute which specifies how many operations should > pass before the first failure. Let's start simple and just implement what you need. -- Jean Delvare SUSE L3 Support -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
