From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from p3nlsmtpcp01-03.prod.phx3.secureserver.net ([184.168.200.142]:59058 "EHLO p3nlsmtpcp01-03.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751441AbdBNVci (ORCPT ); Tue, 14 Feb 2017 16:32:38 -0500 Received: from [42.109.217.201] (port=28955 helo=giis.co.in) by p3plcpnl0639.prod.phx3.secureserver.net with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.87) (envelope-from ) id 1cdkhE-0003yK-QA for linux-btrfs@vger.kernel.org; Tue, 14 Feb 2017 14:31:37 -0700 Date: Wed, 15 Feb 2017 03:01:25 +0530 From: "Lakshmipathi.G" To: linux-btrfs@vger.kernel.org Subject: [PATCH] btrfs-progs: misc-tests: Primary Superblock corruption and recovery using backup Superblock. Message-ID: <20170214213125.GA25514@giis.co.in> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-btrfs-owner@vger.kernel.org List-ID: Signed-off-by: Lakshmipathi.G --- .../019-fix-corrupted-superblock/test.sh | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100755 tests/misc-tests/019-fix-corrupted-superblock/test.sh diff --git a/tests/misc-tests/019-fix-corrupted-superblock/test.sh b/tests/misc-tests/019-fix-corrupted-superblock/test.sh new file mode 100755 index 0000000..806c775 --- /dev/null +++ b/tests/misc-tests/019-fix-corrupted-superblock/test.sh @@ -0,0 +1,37 @@ +#!/bin/bash +# +# Corrupt primary superblock and restore it using backup superblock. +# + +source $TOP/tests/common + +check_prereq btrfs-select-super + +setup_root_helper +prepare_test_dev 512M + +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=$superblock_offset bs=1 \ + count=4 conv=notrunc &> /dev/null + run_check_stdout $SUDO_HELPER mount $TEST_DEV $TEST_MNT | \ + grep -q 'wrong fs type' + if [ $? -ne 0 ]; then + _fail "Failed to corrupt superblock." + fi + + # Copy backup superblock to primary + run_check $TOP/btrfs-select-super -s 1 $TEST_DEV + run_check $SUDO_HELPER mount $TEST_DEV $TEST_MNT + if [ $? -ne 0 ]; then + _fail "Failed to fix superblock." + fi + run_check_umount_test_dev +} + +test_superblock_restore -- 2.7.4