Hi Coly, Stefan-- On 11/22/2017 05:14 AM, Stefan Priebe - Profihost AG wrote: >> Hi Stefan, >> >> Hmm, I don't have idea here. Anyway, is the cache mode set as writeback? >> Recently I post a patch to fix a potential deadlock between writeback >> rate update kworker and register code, I am not sure whether it is >> relative to your issue, but at least we can have a try. the patch title is: >> [RFC] bcache: fix a circular dead locking with dc->writeback_lock and >> bch_register_lock >> >> Just for your information. > > i can try that one - can you please resend? I can't find that mail and > don't know how to grab that one our of the web html archives to apply > correctly. > > Stefan I don't think there's any chance this patch will do anything. If there's a deadlock, the whole thing will become stuck forever and never allow registration or progress on the device again-- which doesn't match the symptoms here. This probably relates to udev configuration in your environment somehow. Mike -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html