From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe - Profihost AG Subject: Re: ont out of 6 bcache devices does not register automatically Date: Wed, 22 Nov 2017 20:06:13 +0100 Message-ID: References: <3ebfa7f8-cef6-ca8f-a56f-14a6bafd5bc6@profihost.ag> <22a61b57-1fbf-5ec4-383c-13b2cb8eaaf2@coly.li> <5c8958c1-acfd-14c9-d29f-0726ca92bc1c@profihost.ag> <58151524-1294-2c8a-42a0-a5f21886625d@coly.li> <6c624629-c528-fd92-420f-ea50c4e6e4c5@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: Received: from cloud1-vm154.de-nserver.de ([178.250.10.56]:60168 "EHLO cloud1-vm154.de-nserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751624AbdKVTGQ (ORCPT ); Wed, 22 Nov 2017 14:06:16 -0500 In-Reply-To: Content-Language: de-DE Sender: linux-bcache-owner@vger.kernel.org List-Id: linux-bcache@vger.kernel.org To: Michael Lyle , Coly Li Cc: "linux-bcache@vger.kernel.org" Am 22.11.2017 um 18:51 schrieb Michael Lyle: > 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. No it does not ;-) > This probably relates to udev configuration in your environment somehow. Default debian udev - nothing special. Works on 50 other systems perfectly only one where it does not... but udev debugging just sucks. Stefan > Mike > -- > To unsubscribe from this list: send the line "unsubscribe linux-bcache" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >