From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from p3nlsmtpcp01-04.prod.phx3.secureserver.net ([184.168.200.145]:53552 "EHLO p3nlsmtpcp01-04.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933429AbdBPWdO (ORCPT ); Thu, 16 Feb 2017 17:33:14 -0500 Date: Fri, 17 Feb 2017 04:01:59 +0530 From: "Lakshmipathi.G" To: quwenruo@cn.fujitsu.com, linux-btrfs@vger.kernel.org Subject: [PATCH v3] btrfs-progs: misc-tests: Superblock corruption and recovery using backup. Message-ID: <20170216223159.GA23242@giis.co.in> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-btrfs-owner@vger.kernel.org List-ID: Test script to recover damaged primary superblock using backup superblock. Signed-off-by: Lakshmipathi.G --- .../019-fix-superblock-corruption/test.sh | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100755 tests/misc-tests/019-fix-superblock-corruption/test.sh diff --git a/tests/misc-tests/019-fix-superblock-corruption/test.sh b/tests/misc-tests/019-fix-superblock-corruption/test.sh new file mode 100755 index 0000000..95815e4 --- /dev/null +++ b/tests/misc-tests/019-fix-superblock-corruption/test.sh @@ -0,0 +1,36 @@ +#!/bin/bash +# +# Corrupt primary superblock and restore it using backup superblock. +# + +source $TOP/tests/common + +check_prereq btrfs-select-super +check_prereq btrfs + +setup_root_helper +prepare_test_dev 512M + +FIRST_SUPERBLOCK_OFFSET=65536 + +test_superblock_restore() +{ + run_check $SUDO_HELPER $TOP/mkfs.btrfs -f $TEST_DEV + + # Corrupt superblock checksum + dd if=/dev/zero of=$TEST_DEV seek=$FIRST_SUPERBLOCK_OFFSET bs=1 \ + count=4 conv=notrunc &> /dev/null + # Run btrfs check to detect corruption + $TOP/btrfs check $TEST_DEV >& /dev/null && \ + _fail "btrfs check should detect corruption" + # Copy backup superblock to primary + run_check $TOP/btrfs-select-super -s 1 $TEST_DEV + + echo "Performing btrfs check" &>> $RESULTS + $TOP/btrfs check $TEST_DEV &>> $RESULTS + if [ $? -ne 0 ]; then + _fail "Failed to fix superblock." + fi +} + +test_superblock_restore -- 2.7.4