From: Eric Whitney Subject: data=journal regressions in 3.16-rc1 Date: Mon, 23 Jun 2014 16:24:04 -0400 Message-ID: <20140623202404.GA16979@wallace> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: tytso@mit.edu, matthew.r.wilcox@intel.com To: linux-ext4@vger.kernel.org Return-path: Received: from mail-qc0-f179.google.com ([209.85.216.179]:54511 "EHLO mail-qc0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754116AbaFWUYI (ORCPT ); Mon, 23 Jun 2014 16:24:08 -0400 Received: by mail-qc0-f179.google.com with SMTP id x3so6627811qcv.10 for ; Mon, 23 Jun 2014 13:24:08 -0700 (PDT) Content-Disposition: inline Sender: linux-ext4-owner@vger.kernel.org List-ID: My regression test results for 3.16-rc1 on x86_64 show three new xfstests failures since 3.15 final when running on an ext4 filesystem mounted with the data=journal and block_validity mount options (xfstests-bld's data_journal scenario). These are generic/075, /112, and /231. All three tests fail consistently. These failures bisect to this kernel patch: 7fc34a62ca mm/msync.c: sync only the requested range in msync() These failures also appear when running on 3.16-rc2, and disappear if the aforementioned patch is reverted. I've not seen the failures in any of the other test scenarios I've run on 3.16-rc1 (4k, ext3, nojournal, etc.). No error messages appear in the kernel log, and not a lot useful is reported when a test fails. Just for reference, here's the result of a generic/075 failure: generic/075 62s ... [15:33:07] [15:33:09] [failed, exit status 1] - output mismatch (see /root/xfstests/results//generic/075.out.bad) --- tests/generic/075.out 2014-06-16 13:14:27.233891460 -0400 +++ /root/xfstests/results//generic/075.out.bad 2014-06-23 15:33:09.654212783 -0400 @@ -4,15 +4,5 @@ ----------------------------------------------- fsx.0 : -d -N numops -S 0 ----------------------------------------------- - ------------------------------------------------ -fsx.1 : -d -N numops -S 0 -x ------------------------------------------------ ... (Run 'diff -u tests/generic/075.out /root/xfstests/results//generic/075.out.bad' to see the entire diff) Ran: generic/075 Failures: generic/075 Failed 1 of 1 tests And the contents of xfstests/results/generic/075.out.bad: QA output created by 075 brevity is wit... ----------------------------------------------- fsx.0 : -d -N numops -S 0 ----------------------------------------------- fsx (-d -N 1000 -S 0) failed, 0 - compare /root/xfstests/results//generic/075.0.{good,bad,fsxlog} od: /root/xfstests/results//generic/075.0.fsxgood: No such file or directory Additional test configuration info: e2fsprogs master branch: bb9cca2ca9 xfstests master branch: 45d1fac130 Perhaps data=journal has an unexpected dependency on the old msync behavior, given the patch comment? Thanks, Eric