tests/fsck-tests/013-extent-tree-rebuild/test.sh

   1 #!/bin/bash
   2
   3 source "$TOP/tests/common"
   4
   5 check_prereq btrfs-corrupt-block
   6 check_prereq mkfs.btrfs
   7 check_prereq btrfs
   8
   9 setup_root_helper
  10 prepare_test_dev
  11
  12 # test whether fsck can rebuild a corrupted extent tree
  13 test_extent_tree_rebuild()
  14 {
  15         run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f "$TEST_DEV"
  16
  17         run_check_mount_test_dev
  18         generate_dataset small
  19
  20         for i in `seq 1 100`;do
  21                 run_check $SUDO_HELPER "$TOP/btrfs" sub snapshot "$TEST_MNT" \
  22                         "$TEST_MNT/snapaaaaaaa_$i"
  23         done
  24         run_check_umount_test_dev
  25
  26         # get extent root bytenr
  27         extent_root_bytenr=`$SUDO_HELPER "$TOP/btrfs" inspect-internal dump-tree -r "$TEST_DEV" | \
  28                             grep extent | awk '{print $7}'`
  29         if [ -z "$extent_root_bytenr" ];then
  30                 _fail "fail to get extent root bytenr"
  31         fi
  32
  33         # corrupt extent root node block
  34         run_check $SUDO_HELPER "$TOP/btrfs-corrupt-block" -l "$extent_root_bytenr" \
  35                 -b 4096 "$TEST_DEV"
  36
  37         $SUDO_HELPER "$TOP/btrfs" check "$TEST_DEV" >& /dev/null && \
  38                         _fail "btrfs check should detect failure"
  39         run_check $SUDO_HELPER "$TOP/btrfs" check --repair --init-extent-tree "$TEST_DEV"
  40         run_check $SUDO_HELPER "$TOP/btrfs" check "$TEST_DEV"
  41 }
  42
  43 test_extent_tree_rebuild