The testcase checks the functionality of "btrfs rescue undelete-subvol",
including recovering an intact subvolume, and handling correctly
incomplete subvolume.

Signed-off-by: Lu Fengqi <lufq.f...@cn.fujitsu.com>
---
 .../029-undelete-subvol/deleted_subvolume.img      | Bin 0 -> 4096 bytes
 .../029-undelete-subvol/drop_progress.raw.xz       | Bin 0 -> 23452 bytes
 tests/misc-tests/029-undelete-subvol/test.sh       |  34 +++++++++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 tests/misc-tests/029-undelete-subvol/deleted_subvolume.img
 create mode 100644 tests/misc-tests/029-undelete-subvol/drop_progress.raw.xz
 create mode 100755 tests/misc-tests/029-undelete-subvol/test.sh

diff --git a/tests/misc-tests/029-undelete-subvol/deleted_subvolume.img 
b/tests/misc-tests/029-undelete-subvol/deleted_subvolume.img
new file mode 100644
index 
0000000000000000000000000000000000000000..9168a8e33fbbb14f9ea78514721a52191b94d1a0
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diff --git a/tests/misc-tests/029-undelete-subvol/drop_progress.raw.xz 
b/tests/misc-tests/029-undelete-subvol/drop_progress.raw.xz
new file mode 100644
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F{{akY3)=ty

literal 0
HcmV?d00001

diff --git a/tests/misc-tests/029-undelete-subvol/test.sh 
b/tests/misc-tests/029-undelete-subvol/test.sh
new file mode 100755
index 000000000000..5f2af456722e
--- /dev/null
+++ b/tests/misc-tests/029-undelete-subvol/test.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+# Test undelete-subvol can recover the intact subvolume, and can skip the
+# incomplete subvolume.
+
+source "$TOP/tests/common"
+
+check_prereq btrfs
+check_prereq btrfs-image
+
+setup_root_helper
+
+check_image()
+{
+       TEST_DEV="$1"
+
+       run_check_stdout "$TOP"/btrfs rescue undelete-subvol "$TEST_DEV" \
+               | grep -q "Recovered 1 subvols" \
+               || _fail "failed to undelete subvol $image" >&2
+
+       run_check $TOP/btrfs check "$TEST_DEV"
+
+       # check whether the recovered image can be mounted normally
+       run_check_mount_test_dev
+
+       run_check_stdout $SUDO_HELPER "$TOP"/btrfs subvolume list "$TEST_MNT" \
+               | grep -q "lost+found" \
+               || _fail "failed to find the recovered subvol $image" >&2
+
+       run_check_umount_test_dev "$TEST_MNT"
+
+       rm "$TEST_DEV"
+}
+
+check_all_images
-- 
2.16.1



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