[Qemu-block] Failing qemu-iotest 211 with -vdi

[Thomas Huth]

QEMU iotest 211 is failing for me, too, when I run it with -vdi:

tests/qemu-iotests$ ./check -vdi 211
QEMU          -- 
"/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../x86_64-softmmu/qemu-system-x86_64"
 -nodefaults -machine accel=qtest
QEMU_IMG      -- "/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../qemu-img" 
QEMU_IO       -- "/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../qemu-io"  
--cache writeback -f vdi
QEMU_NBD      -- "/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../qemu-nbd" 
IMGFMT        -- vdi
IMGPROTO      -- file
PLATFORM      -- Linux/x86_64 thuth 3.10.0-957.10.1.el7.x86_64
TEST_DIR      -- /home/thuth/tmp/qemu-build/tests/qemu-iotests/scratch
SOCKET_SCM_HELPER -- 
/home/thuth/tmp/qemu-build/tests/qemu-iotests/socket_scm_helper

211         - output mismatch (see 211.out.bad)
--- /home/thuth/devel/qemu/tests/qemu-iotests/211.out   2019-04-23 
16:43:12.000000000 +0200
+++ /home/thuth/tmp/qemu-build/tests/qemu-iotests/211.out.bad   2019-04-28 
17:41:19.000000000 +0200
@@ -55,8 +55,7 @@
 virtual size: 32M (33554432 bytes)
 cluster_size: 1048576
 
-[{ "start": 0, "length": 3072, "depth": 0, "zero": false, "data": true, 
"offset": 1024},
-{ "start": 3072, "length": 33551360, "depth": 0, "zero": true, "data": true, 
"offset": 4096}]
+[{ "start": 0, "length": 33554432, "depth": 0, "zero": true, "data": true, 
"offset": 1024}]
 
 === Invalid BlockdevRef ===
 
Failures: 211
Failed 1 of 1 tests

Any ideas how to fix this?

 Thomas