[PATCH v2 5/5] btrfs-progs: fsck-tests: Add test image for dev extents beyond device boundary

[Qu Wenruo <wqu@suse.com>]

Now two locations can detect such problem, either by device item
used/total bytes check, or by early dev extents check against device
boundary.

The image is hand-crafted image which uses DATA SINGLE chunk to feed
btrfs check.
As expected, as long as block group item, chunk item, device used bytes
matches, older btrfs check can't detect such problem.

Signed-off-by: Qu Wenruo <wqu@suse.com>
---
 .../over_dev_boundary.img.xz                  | Bin 0 -> 1640 bytes
 tests/fsck-tests/036-bad-dev-extents/test.sh  |  20 ++++++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 tests/fsck-tests/036-bad-dev-extents/over_dev_boundary.img.xz
 create mode 100755 tests/fsck-tests/036-bad-dev-extents/test.sh

diff --git a/tests/fsck-tests/036-bad-dev-extents/over_dev_boundary.img.xz b/tests/fsck-tests/036-bad-dev-extents/over_dev_boundary.img.xz
new file mode 100644
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GIT binary patch
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diff --git a/tests/fsck-tests/036-bad-dev-extents/test.sh b/tests/fsck-tests/036-bad-dev-extents/test.sh
new file mode 100755
index 000000000000..fe2d05673bbe
--- /dev/null
+++ b/tests/fsck-tests/036-bad-dev-extents/test.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+#
+# Due to DUP chunk allocator bugs, we could allocate DUP chunks while its dev
+# extents could exist beyond device boundary.
+# And since all related items (block group, chunk, device used bytes) are all
+# valid, btrfs check won't report any error.
+#
+# This test case contain hand crafted minimal image, to test if btrfs check can
+# detect and report such error.
+
+source "$TEST_TOP/common"
+
+check_prereq btrfs
+
+check_image() {
+	run_mustfail "btrfs check failed to detect invalid dev extents" \
+		"$TOP/btrfs" check "$1"
+}
+
+check_all_images
-- 
2.19.1