56 lines
1.5 KiB
Bash
Executable File
56 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
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source $TOP/tests/common
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check_prereq btrfs-debug-tree
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check_prereq mkfs.btrfs
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setup_root_helper
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if [ -z $TEST_DEV ]; then
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echo "\$TEST_DEV not given, use $TOP/test/test.img as fallback" >> \
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$RESULTS
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TEST_DEV="$TOP/tests/test.img"
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# Need at least 1G to avoid mixed block group, which extent tree
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# rebuild doesn't support.
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run_check truncate -s 1G $TEST_DEV
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fi
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if [ -z $TEST_MNT ];then
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echo " [NOTRUN] extent tree rebuild, need TEST_MNT variant"
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exit 0
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fi
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# test whether fsck can rebuild a corrupted extent tree
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test_extent_tree_rebuild()
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{
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run_check $SUDO_HELPER $TOP/mkfs.btrfs -f $TEST_DEV
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run_check $SUDO_HELPER mount $TEST_DEV $TEST_MNT
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run_check $SUDO_HELPER cp -aR /lib/modules/`uname -r`/ $TEST_MNT
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for i in `seq 1 100`;do
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run_check $SUDO_HELPER $TOP/btrfs sub snapshot $TEST_MNT \
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$TEST_MNT/snapaaaaaaa_$i
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done
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run_check $SUDO_HELPER umount $TEST_DEV
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# get extent root bytenr
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extent_root_bytenr=`$SUDO_HELPER $TOP/btrfs-debug-tree -r $TEST_DEV | \
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grep extent | awk '{print $7}'`
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if [ -z $extent_root_bytenr ];then
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_fail "fail to get extent root bytenr"
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fi
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# corrupt extent root node block
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run_check $SUDO_HELPER $TOP/btrfs-corrupt-block -l $extent_root_bytenr \
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-b 4096 $TEST_DEV
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$SUDO_HELPER $TOP/btrfs check $TEST_DEV >& /dev/null && \
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_fail "btrfs check should detect failure"
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run_check $SUDO_HELPER $TOP/btrfs check --init-extent-tree $TEST_DEV
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run_check $SUDO_HELPER $TOP/btrfs check $TEST_DEV
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}
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test_extent_tree_rebuild
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