iotest 30 failing

[Philippe Mathieu-Daudé]

Hi,

Based on commit 1ed9228f63e (ericb/tags/pull-nbd-2021-02-02-v2)
I got:

  TEST   iotest-qcow2: 030 [fail]
--- /builds/philmd/qemu/tests/qemu-iotests/030.out
+++ 030.out.bad
@@ -1,5 +1,47 @@
-...........................
+WARNING:qemu.machine:qemu received signal 11; command:
"/builds/philmd/qemu/build/tests/qemu-iotests/../../qemu-system-x86_64
-display none -vga none -chardev
socket,id=mon,path=/tmp/tmphop581f2/qemu-12072-monitor.sock -mon
chardev=mon,mode=control -qtest
unix:path=/tmp/tmphop581f2/qemu-12072-qtest.sock -accel qtest
-nodefaults -display none -accel qtest -drive
if=virtio,id=drive0,file=/builds/philmd/qemu/build/tests/qemu-iotests/scratch/img-8.img,format=qcow2,cache=writeback,aio=threads,backing.backing.backing.backing.backing.backing.backing.backing.node-name=node0,backing.backing.backing.backing.backing.backing.backing.node-name=node1,backing.backing.backing.backing.backing.backing.node-name=node2,backing.backing.backing.backing.backing.node-name=node3,backing.backing.backing.backing.node-name=node4,backing.backing.backing.node-name=node5,backing.backing.node-name=node6,backing.node-name=node7,node-name=node8"
+.........EE.................

https://gitlab.com/philmd/qemu/-/jobs/1008007132