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btrfs-progs: misc-tests: Superblock corruption and recovery using backup 

Signed-off-by: Lakshmipathi.G <Lakshmipathi.G@giis.co.in>
Signed-off-by: David Sterba <dsterba@suse.com>
master
Lakshmipathi.G 2017-04-15 15:43:08 +05:30 committed by David Sterba
parent 89093e6fd1
commit 57909d702c
1 changed files with 34 additions and 0 deletions
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34
tests/misc-tests/020-fix-superblock-corruption/test.sh 100755
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#!/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
FIRST_SUPERBLOCK_OFFSET=65536
test_superblock_restore()
{
run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f "$TEST_DEV"
# Corrupt superblock checksum
run_check $SUDO_HELPER dd if=/dev/zero of="$TEST_DEV" \
seek="$FIRST_SUPERBLOCK_OFFSET" bs=1 count=4 conv=notrunc
# Run btrfs check to detect corruption
run_mayfail "$TOP/btrfs" check "$TEST_DEV" && \
_fail "btrfs check should detect corruption"
# Copy backup superblock to primary
run_check "$TOP/btrfs-select-super" -s 1 "$TEST_DEV"
# Perform btrfs check
run_check "$TOP/btrfs" check "$TEST_DEV"
}
test_superblock_restore