Without this argument, qemu will print an angry message about not being able to connect to a display server if $DISPLAY is not set. For me, that breaks iotests.supported_formats() because it thus only sees ["Could", "not", "connect"] as the supported formats.
Signed-off-by: Max Reitz <mre...@redhat.com> --- tests/qemu-iotests/check | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check index f9c24b6753..d6fec4bf3c 100755 --- a/tests/qemu-iotests/check +++ b/tests/qemu-iotests/check @@ -130,7 +130,7 @@ export CACHEMODE="writeback" export QEMU_IO_OPTIONS="" export QEMU_IO_OPTIONS_NO_FMT="" export CACHEMODE_IS_DEFAULT=true -export QEMU_OPTIONS="-nodefaults -machine accel=qtest" +export QEMU_OPTIONS="-nodefaults -machine accel=qtest -display none" export VALGRIND_QEMU= export IMGKEYSECRET= export IMGOPTSSYNTAX=false -- 2.21.0
