From patchwork Fri Aug 14 15:31:43 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Jain X-Patchwork-Id: 7016051 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5C9F1C05AC for ; Fri, 14 Aug 2015 15:32:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6F9B5207F7 for ; Fri, 14 Aug 2015 15:32:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 649BB207F6 for ; Fri, 14 Aug 2015 15:32:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755309AbbHNPcV (ORCPT ); Fri, 14 Aug 2015 11:32:21 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:24226 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755168AbbHNPcU (ORCPT ); Fri, 14 Aug 2015 11:32:20 -0400 Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t7EFW8eM006852 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 14 Aug 2015 15:32:08 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userv0022.oracle.com (8.13.8/8.13.8) with ESMTP id t7EFW8DH004657 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Fri, 14 Aug 2015 15:32:08 GMT Received: from abhmp0013.oracle.com (abhmp0013.oracle.com [141.146.116.19]) by userv0121.oracle.com (8.13.8/8.13.8) with ESMTP id t7EFW7ME001565; Fri, 14 Aug 2015 15:32:07 GMT Received: from localhost.localdomain (/42.60.17.47) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 14 Aug 2015 08:32:07 -0700 From: Anand Jain To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, david@fromorbit.com, eguan@redhat.com, fdmanana@gmail.com Subject: [PATCH v6 1/3] xfstests: btrfs: add functions to create dm-error device Date: Fri, 14 Aug 2015 23:31:43 +0800 Message-Id: <1439566305-12460-2-git-send-email-anand.jain@oracle.com> X-Mailer: git-send-email 2.4.1 In-Reply-To: <1439566305-12460-1-git-send-email-anand.jain@oracle.com> References: <1439549224-29784-1-git-send-email-anand.jain@oracle.com> <1439566305-12460-1-git-send-email-anand.jain@oracle.com> X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Anand Jain Controlled EIO from the device is achieved using the dm device. Helper functions are at common/dmerror. Broadly steps will include calling _init_dmerror(). _init_dmerror() will use SCRATCH_DEV to create dm linear device and assign DMERROR_DEV to /dev/mapper/error-test. When test script is ready to get EIO, the test cases can call _load_dmerror_table() which then it will load the dm error. so that reading DMERROR_DEV will cause EIO. After the test case is complete, cleanup must be done by calling _cleanup_dmerror(). Signed-off-by: Anand Jain Reviewed-by: Filipe Manana --- v5->v6: accepts Eryu's comments v4->v5: No Change. keep up with the patch set v3->v4: rebase on latest xfstests code v2.1->v3: accepts Filipe Manana's review comments, thanks v2->v2.1: fixed missed typo error fixup in the commit. v1->v2: accepts Dave Chinner's review comments, thanks common/dmerror | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ common/rc | 9 ++++++++ 2 files changed, 78 insertions(+) create mode 100644 common/dmerror diff --git a/common/dmerror b/common/dmerror new file mode 100644 index 0000000..928e998 --- /dev/null +++ b/common/dmerror @@ -0,0 +1,69 @@ +##/bin/bash +# +# Copyright (c) 2015 Oracle. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +# +# +# common functions for setting up and tearing down a dmerror device + +_init_dmerror() +{ + $DMSETUP_PROG remove error-test > /dev/null 2>&1 + + local BLK_DEV_SIZE=`blockdev --getsz $SCRATCH_DEV` + + DMERROR_DEV='/dev/mapper/error-test' + + DMLINEAR_TABLE="0 $BLK_DEV_SIZE linear $SCRATCH_DEV 0" + + $DMSETUP_PROG create error-test --table "$DMLINEAR_TABLE" || \ + _fatal "failed to create dm linear device" + + DMERROR_TABLE="0 $BLK_DEV_SIZE error $SCRATCH_DEV 0" +} + +_scratch_mkfs_dmerror() +{ + $MKFS_BTRFS_PROG $MKFS_OPTIONS $* $DMERROR_DEV >> $seqres.full 2>&1 || \ + _fatal "failed to create mkfs.btrfs $* $DMERROR_DEV" +} + +_mount_dmerror() +{ + $MOUNT_PROG -t $FSTYP $MOUNT_OPTIONS $DMERROR_DEV $SCRATCH_MNT +} + +_unmount_dmerror() +{ + $UMOUNT_PROG $SCRATCH_MNT +} + +_cleanup_dmerror() +{ + $UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1 + $DMSETUP_PROG remove error-test > /dev/null 2>&1 +} + +_load_dmerror_table() +{ + $DMSETUP_PROG suspend error-test + [ $? -ne 0 ] && _fatal "failed to suspend error-test" + + $DMSETUP_PROG load error-test --table "$DMERROR_TABLE" + [ $? -ne 0 ] && _fatal "failed to load error table error-test" + + $DMSETUP_PROG resume error-test + [ $? -ne 0 ] && _fatal "failed to resume error-test" +} diff --git a/common/rc b/common/rc index 70d2fa8..8d4da0e 100644 --- a/common/rc +++ b/common/rc @@ -1337,6 +1337,15 @@ _require_sane_bdev_flush() fi } +# this test requires the device mapper error target +# +_require_dmerror() +{ + _require_command "$DMSETUP_PROG" dmsetup + $DMSETUP_PROG targets | grep error >/dev/null 2>&1 + [ $? -ne 0 ] && _notrun "This test requires dm error support" +} + # this test requires the device mapper flakey target # _require_dm_flakey()