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[PULL 07/36] iotests: Test copy offloading with external data file

From: Kevin Wolf
Subject: [PULL 07/36] iotests: Test copy offloading with external data file
Date: Tue, 18 Feb 2020 15:06:53 +0100

This adds a test for 'qemu-img convert' with copy offloading where the
target image has an external data file. If the test hosts supports it,
it tests both the case where copy offloading is supported and the case
where it isn't (otherwise we just test unsupported twice).

More specifically, the case with unsupported copy offloading tests
qcow2_alloc_cluster_abort() with external data files.

Signed-off-by: Kevin Wolf <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
 tests/qemu-iotests/244     | 14 ++++++++++++++
 tests/qemu-iotests/244.out |  6 ++++++
 2 files changed, 20 insertions(+)

diff --git a/tests/qemu-iotests/244 b/tests/qemu-iotests/244
index 0d1efee6ef..2ec1815e6f 100755
--- a/tests/qemu-iotests/244
+++ b/tests/qemu-iotests/244
@@ -197,6 +197,20 @@ $QEMU_IO -c 'read -P 0x11 0 1M' -f $IMGFMT "$TEST_IMG" | 
 $QEMU_IMG map --output=human "$TEST_IMG" | _filter_testdir
 $QEMU_IMG map --output=json "$TEST_IMG"
+echo "=== Copy offloading ==="
+# Make use of copy offloading if the test host can provide it
+_make_test_img -o "data_file=$TEST_IMG.data" 64M
+$QEMU_IMG convert -f $IMGFMT -O $IMGFMT -n -C "$TEST_IMG.src" "$TEST_IMG"
+$QEMU_IMG compare -f $IMGFMT -F $IMGFMT "$TEST_IMG.src" "$TEST_IMG"
+# blkdebug doesn't support copy offloading, so this tests the error path
+$QEMU_IMG amend -f $IMGFMT -o "data_file=blkdebug::$TEST_IMG.data" "$TEST_IMG"
+$QEMU_IMG convert -f $IMGFMT -O $IMGFMT -n -C "$TEST_IMG.src" "$TEST_IMG"
+$QEMU_IMG compare -f $IMGFMT -F $IMGFMT "$TEST_IMG.src" "$TEST_IMG"
 # success, all done
 echo "*** done"
 rm -f $seq.full
diff --git a/tests/qemu-iotests/244.out b/tests/qemu-iotests/244.out
index 6a3d0067cc..e6f4dc7993 100644
--- a/tests/qemu-iotests/244.out
+++ b/tests/qemu-iotests/244.out
@@ -122,4 +122,10 @@ Offset          Length          Mapped to       File
 0               0x100000        0               TEST_DIR/t.qcow2.data
 [{ "start": 0, "length": 1048576, "depth": 0, "zero": false, "data": true, 
"offset": 0},
 { "start": 1048576, "length": 66060288, "depth": 0, "zero": true, "data": 
+=== Copy offloading ===
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 
+Images are identical.
+Images are identical.
 *** done

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