From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guido Winkelmann Subject: Re: Random data corruption in VM, possibly caused by rbd Date: Fri, 08 Jun 2012 15:08:19 +0200 Message-ID: <3953360.A6afv81RG7@pc10> References: <21601270.dfB0BsVfyn@pc10> <4FD10575.7010300@inktank.com> <6535521.l6e0muMKBm@pc10> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: Received: from unknownsite.de ([62.48.69.106]:56525 "EHLO hartes-hannover.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751565Ab2FHNIZ (ORCPT ); Fri, 8 Jun 2012 09:08:25 -0400 In-Reply-To: <6535521.l6e0muMKBm@pc10> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Josh Durgin Cc: ceph-devel@vger.kernel.org Am Freitag, 8. Juni 2012, 14:55:44 schrieb Guido Winkelmann: > I did not change anything else in the setup. In particular, the OSDs still > use btrfs. One of the OSD has been restarted, though. I will run another > test with a VM without rbd caching, to make sure it wasn't by random chance > restarting that one osd that made the real difference. Did that now, the problem is still reproducable: Start a VM normally -> Lots and lots of data corruption (and it seems to be getting worse...) Start a VM with rbd caching -> No data corruption Guido