From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Elder Subject: Re: Issue #5876 : assertion failure in rbd_img_obj_callback() Date: Tue, 25 Mar 2014 06:48:40 -0500 Message-ID: <53316D18.7040103@ieee.org> References: <1395736765.2823.29.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mail-oa0-f51.google.com ([209.85.219.51]:38387 "EHLO mail-oa0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752588AbaCYLsV (ORCPT ); Tue, 25 Mar 2014 07:48:21 -0400 Received: by mail-oa0-f51.google.com with SMTP id i4so391683oah.10 for ; Tue, 25 Mar 2014 04:48:21 -0700 (PDT) In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Ilya Dryomov , Olivier Bonvalet Cc: Ceph Development On 03/25/2014 04:04 AM, Ilya Dryomov wrote: > On Tue, Mar 25, 2014 at 10:39 AM, Olivier Bonvalet wrote: >> Hi, >> >> what can/should I do to help fix that problem ? >> >> for now, RBD kernel client hang on : >> Assertion failure in rbd_img_obj_callback() at line 2131: >> rbd_assert(which >= img_request->next_completion); If you can build your own kernel as Ilya says I'd like to see the values of which and img_request->next_completion here. If you can't, is there anything interesting about your workload that might help reproduce the problem? Thanks. -Alex >> >> or on : >> Assertion failure in rbd_img_obj_callback() at line 2127: >> rbd_assert(img_request != NULL); >> >> >> I have both case at least once per week, on latest 3.13.5 kernels. >> >> It seems that the problem occurs only on more loaded servers (I have 4 >> near same servers, and crash occurs on two of them. If I move the VM, >> crash follows...). > > Hi, > > I'm looking into this, but it doesn't reproduce on my boxes. This must > be some sort of race and the fact that there is nothing else in the > dmesg right before the splats doesn't help. > > Can you send me your 3.13.5 rbd.ko and libceph.ko? Also, just so > I know, can you build your own kernel? > > Thanks, > > Ilya > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >