forked from Mirrors/btrfs-progs
35 lines
785 B
Bash
35 lines
785 B
Bash
#!/bin/bash
|
|
#
|
|
# Corrupt primary superblock and restore it using backup superblock.
|
|
|
|
source "$TEST_TOP/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
|