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#!/bin/bash
#
# loop through all of our bad images and make sure fsck repairs them properly
#
# It's GPL, same as everything else in this tree.
#
unset top
unset LANG
LANG=C
script_dir=$(dirname $(realpath $0))
top=$(realpath $script_dir/../)
TEST_DEV=${TEST_DEV:-}
TEST_MNT=${TEST_MNT:-$top/tests/mnt}
RESULT="$top/tests/fsck-tests-results.txt"
source $top/tests/common
# Allow child test to use $top and $RESULT
export top
export RESULT
# For custom script needs to verfiy recovery
export TEST_MNT
export LANG
rm -f $RESULT
mkdir -p $TEST_MNT || _fail "unable to create mount point on $TEST_MNT"
# test rely on corrupting blocks tool
check_prereq btrfs-corrupt-block
check_prereq btrfs-image
check_prereq btrfs
# Each dir contains one type of error for btrfsck test.
# Each dir must be one of the following 2 types:
# 1) Only btrfs-image dump
# Only contains one or several btrfs-image dumps (.img)
# Each image will be tested by generic test routine
# (btrfsck --repair and btrfsck).
# This is for case that btree-healthy images.
# 2) Custom test script
# This dir contains test.sh which will do custom image
# generation/check/verification.
# This is for case btrfs-image can't dump or case needs extra
# check/verify
for i in $(find $top/tests/fsck-tests -maxdepth 1 -mindepth 1 -type d | sort)
do
echo " [TEST] $(basename $i)"
cd $i
if [ -x test.sh ]; then
# Type 2
./test.sh
if [ $? -ne 0 ]; then
_fail "test failed for case $(basename $i)"
fi
else
# Type 1
check_all_images `pwd`
fi
cd $top
done
if [ -z $TEST_DEV ] || [ -z $TEST_MNT ];then
echo " [NOTRUN] extent tree rebuild"
exit 0
fi
# test whether fsck can rebuild a corrupted extent tree
test_extent_tree_rebuild()
{
echo " [TEST] extent tree rebuild"
$top/mkfs.btrfs -f $TEST_DEV >> /dev/null 2>&1 || _fail "fail to mkfs"
run_check mount $TEST_DEV $TEST_MNT
cp -aR /lib/modules/`uname -r`/ $TEST_MNT 2>&1
for i in `seq 1 100`;do
$top/btrfs sub snapshot $TEST_MNT \
$TEST_MNT/snapaaaaaaa_$i >& /dev/null
done
run_check umount $TEST_DEV
# get extent root bytenr
extent_root_bytenr=`$top/btrfs-debug-tree -r $TEST_DEV | \
grep extent | awk '{print $7}'`
if [ -z $extent_root_bytenr ];then
_fail "fail to get extent root bytenr"
fi
# corrupt extent root node block
run_check $top/btrfs-corrupt-block -l $extent_root_bytenr \
-b 4096 $TEST_DEV
$top/btrfs check $TEST_DEV >& /dev/null && \
_fail "btrfs check should detect failure"
run_check $top/btrfs check --init-extent-tree $TEST_DEV
run_check $top/btrfs check $TEST_DEV
}
test_extent_tree_rebuild
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