3 source $TOP/tests/common
5 check_prereq btrfs-debug-tree
6 check_prereq mkfs.btrfs
10 # test whether fsck can rebuild a corrupted extent tree
11 test_extent_tree_rebuild()
13 run_check $SUDO_HELPER $TOP/mkfs.btrfs -f $TEST_DEV
15 run_check_mount_test_dev
16 run_check $SUDO_HELPER cp -aR /lib/modules/`uname -r`/ $TEST_MNT
18 for i in `seq 1 100`;do
19 run_check $SUDO_HELPER $TOP/btrfs sub snapshot $TEST_MNT \
20 $TEST_MNT/snapaaaaaaa_$i
22 run_check_umount_test_dev
24 # get extent root bytenr
25 extent_root_bytenr=`$SUDO_HELPER $TOP/btrfs-debug-tree -r $TEST_DEV | \
26 grep extent | awk '{print $7}'`
27 if [ -z $extent_root_bytenr ];then
28 _fail "fail to get extent root bytenr"
31 # corrupt extent root node block
32 run_check $SUDO_HELPER $TOP/btrfs-corrupt-block -l $extent_root_bytenr \
35 $SUDO_HELPER $TOP/btrfs check $TEST_DEV >& /dev/null && \
36 _fail "btrfs check should detect failure"
37 run_check $SUDO_HELPER $TOP/btrfs check --init-extent-tree $TEST_DEV
38 run_check $SUDO_HELPER $TOP/btrfs check $TEST_DEV
41 test_extent_tree_rebuild