From: Nix Subject: Re: Apparent serious progressive ext4 data corruption bug in 3.6.3 (and other stable branches?) Date: Wed, 24 Oct 2012 12:46:33 +0100 Message-ID: <87hapkks86.fsf@spindle.srvr.nix> References: <87objupjlr.fsf@spindle.srvr.nix> <20121023013343.GB6370@fieldses.org> <87mwzdnuww.fsf@spindle.srvr.nix> <20121023143019.GA3040@fieldses.org> <874nllxi7e.fsf_-_@spindle.srvr.nix> <87pq48nbyz.fsf_-_@spindle.srvr.nix> <508740B2.2030401@redhat.com> <87txtkld4h.fsf@spindle.srvr.nix> <50876E1D.3040501@redhat.com> <20121024052351.GB21714@thunk.org> Mime-Version: 1.0 Content-Type: text/plain Cc: "Theodore Ts'o" , Eric Sandeen , linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, "J. Bruce Fields" , Bryan Schumaker , Peng Tao , Trond.Myklebust@netapp.com, gregkh@linuxfoundation.org, Toralf =?utf-8?Q?F=C3=B6rster?= To: Hugh Dickins Return-path: Received: from icebox.esperi.org.uk ([81.187.191.129]:58534 "EHLO mail.esperi.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755436Ab2JXLqq (ORCPT ); Wed, 24 Oct 2012 07:46:46 -0400 In-Reply-To: (Hugh Dickins's message of "Wed, 24 Oct 2012 00:00:46 -0700 (PDT)") Sender: linux-ext4-owner@vger.kernel.org List-ID: On 24 Oct 2012, Hugh Dickins verbalised: > On Wed, 24 Oct 2012, Theodore Ts'o wrote: >> Journal flushes outside of an unmount does >> happen as part of online resizing, the FIBMAP ioctl, or when the file >> system is frozen. But it didn't sound like Toralf or Nix was using >> any of those features. (Toralf, Nix, please correct me if my >> assumptions here is wrong). > > I believe it also happens at swapon of a swapfile on the filesystem. I'm not using swapfiles, only swap partitions (on separate LVM LVs). So that's not it either. -- NULL && (void)