From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dkim2.fusionio.com ([66.114.96.54]:39255 "EHLO dkim2.fusionio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755153Ab3IYMay (ORCPT ); Wed, 25 Sep 2013 08:30:54 -0400 Received: from mx2.fusionio.com (unknown [10.101.1.160]) by dkim2.fusionio.com (Postfix) with ESMTP id E261A9A06AA for ; Wed, 25 Sep 2013 06:30:53 -0600 (MDT) Date: Wed, 25 Sep 2013 08:30:51 -0400 From: Josef Bacik To: Chris Murphy CC: Btrfs BTRFS Subject: Re: balance induced csum errors, systemd-journal Message-ID: <20130925123051.GD18681@localhost.localdomain> References: <4CA64610-C709-4805-A9DC-AA8EB0720BBF@colorremedies.com> <1810D553-8DB4-4FAA-A305-CF3BE9A85B6F@colorremedies.com> <795CFB34-4216-4ACA-A56D-5F673B2FD45E@colorremedies.com> <013CDB89-72B2-4276-BCE9-0177CA90D840@colorremedies.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" In-Reply-To: <013CDB89-72B2-4276-BCE9-0177CA90D840@colorremedies.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Tue, Sep 24, 2013 at 11:44:15PM -0600, Chris Murphy wrote: > > On Sep 24, 2013, at 10:34 PM, Chris Murphy wrote: > > > And how would I go about setting /var/log/journal contents to inherit nodatacow? Possible? > > chattr +C /var/log/journal > > Resolved the problem. Whether this is an appropriate long term fix that systemd should apply to this directory, I don't know. > That just disables cow which in turn disables csumming so it is a good solution for you right now and gives me time ti figure out wtf is going on here. Looking at the systemd code it isn't doing O_DIRECT, which is how you usually end up with this sort of situation. So it is likely a bug on our side, I will try and track it down today. Thanks for narrowing this down, Josef