3 source $TOP/tests/common
5 check_prereq btrfs-debug-tree
6 check_prereq mkfs.btrfs
10 if [ -z $TEST_MNT ];then
11 echo " [NOTRUN] extent tree rebuild, need TEST_MNT variant"
15 # test whether fsck can rebuild a corrupted extent tree
16 test_extent_tree_rebuild()
18 run_check $SUDO_HELPER $TOP/mkfs.btrfs -f $TEST_DEV
20 run_check $SUDO_HELPER mount $TEST_DEV $TEST_MNT
21 run_check $SUDO_HELPER cp -aR /lib/modules/`uname -r`/ $TEST_MNT
23 for i in `seq 1 100`;do
24 run_check $SUDO_HELPER $TOP/btrfs sub snapshot $TEST_MNT \
25 $TEST_MNT/snapaaaaaaa_$i
27 run_check $SUDO_HELPER umount $TEST_DEV
29 # get extent root bytenr
30 extent_root_bytenr=`$SUDO_HELPER $TOP/btrfs-debug-tree -r $TEST_DEV | \
31 grep extent | awk '{print $7}'`
32 if [ -z $extent_root_bytenr ];then
33 _fail "fail to get extent root bytenr"
36 # corrupt extent root node block
37 run_check $SUDO_HELPER $TOP/btrfs-corrupt-block -l $extent_root_bytenr \
40 $SUDO_HELPER $TOP/btrfs check $TEST_DEV >& /dev/null && \
41 _fail "btrfs check should detect failure"
42 run_check $SUDO_HELPER $TOP/btrfs check --init-extent-tree $TEST_DEV
43 run_check $SUDO_HELPER $TOP/btrfs check $TEST_DEV
46 test_extent_tree_rebuild