Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
---
.../mkfs-tests/010-reserved-1M-for-single/test.sh | 37 ++++++++++++++++++++++
1 file changed, 37 insertions(+)
create mode 100755 tests/mkfs-tests/010-reserved-1M-for-single/test.sh
diff --git a/tests/mkfs-tests/010-reserved-1M-for-single/test.sh b/tests/mkfs-tests/010-reserved-1M-for-single/test.sh
new file mode 100755
index 000000000000..1a4936eaf72e
--- /dev/null
+++ b/tests/mkfs-tests/010-reserved-1M-for-single/test.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+# Test if "-m single" or "-M" can cause dev extent to use reserved 1M range
+#
+# Other profiles will cause mkfs.btrfs to allocate new meta/sys chunks
+# using btrfs_alloc_chunk() which won't use 0~1M range, so other profiles
+# are safe.
+
+source "$TOP/tests/common"
+
+check_prereq mkfs.btrfs
+check_prereq btrfs
+
+prepare_test_dev
+
+do_one_test ()
+{
+ run_check "$TOP/mkfs.btrfs" -f $@ "$TEST_DEV"
+
+ # Use dev-extent tree to find first device extent
+ first_dev_extent=$(run_check_stdout "$TOP/btrfs" inspect-internal \
+ dump-tree -t device "$TEST_DEV" | \
+ grep -oP '(?<=DEV_EXTENT )[[:digit:]]*' | head -n1)
+
+ if [ -z $first_dev_extent ]; then
+ _fail "Failed to get first device extent"
+ fi
+
+ echo "First dev extent starts at $first_dev_extent" >> "$RESULTS"
+ echo "Reserved range is [0, $(( 1024 * 1024)))" >> "$RESULTS"
+ # First device extent should not start below 1M
+ if [ $first_dev_extent -lt $(( 1024 * 1024 )) ]; then
+ _fail "First device extent occupies reserved 0~1M range"
+ fi
+}
+
+do_one_test "-M"
+do_one_test "-m single"
--
2.15.1
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
