[Qemu-devel] qmp problems with --enable-kvm

[Dietmar Maurer]

I use the following qmp commands (file cmds.txt) for testing:

--------- cmds.txt start--------
{"execute":"qmp_capabilities", "arguments":{}}
{"execute":"migrate", "arguments":{ "uri":"exec:cat >/dev/null"}}
{"execute":"query-migrate", "arguments":{}}
--------- cmds.txt end--------

and the following command line to start qemu:

#  ./x86_64-softmmu/qemu-system-x86_64 -chardev 
socket,id=qmp,path=/tmp/test.qmp,server,nowait -mon chardev=qmp,mode=control  
--enable-kvm

I then execute the qmp commands with:

# cat cmds.txt | socat - /tmp/test.qmp 
{"QMP": {"version": {"qemu": {"micro": 90, "minor": 2, "major": 1}, "package": 
""}, "capabilities": []}}
{"return": {}}
{"return": {}}
{"timestamp": {"seconds": 1353587785, "microseconds": 134907}, "event": "STOP"}
{"return": {"status": "completed", "downtime": 8, "ram": {"total": 143065088, 
"remaining": 0, "transferred": 772035, "duplicate": 34755, "dirty-pages-rate": 
0, "normal-bytes": 737280, "normal": 180}}}

so far so good.

But if I execute that again I get an error:

# cat cmds.txt | socat - /tmp/test.qmp 
{"error": {"class": "CommandNotFound", "desc": "The command qmp_capabilities 
has not been found"}}
{"return": {}}
{"return": {"expected-downtime": 0, "status": "active", "total-time": 33, 
"ram": {"total": 143065088, "remaining": 8937472, "transferred": 495481, 
"duplicate": 67388, "dirty-pages-rate": 0, "normal-bytes": 1200128, "normal": 
293}}}


The interesting thing is that it works perfectly without --enable-kvm. 

Can somebody reproduce that?