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Date: Thu, 22 Nov 2012 16:35:28 +0100
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Subject: Re: [Qemu-devel] qmp problems with --enable-kvm
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To: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Dietmar Maurer <dietmar@proxmox.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>

Il 22/11/2012 14:20, Luiz Capitulino ha scritto:
>> > --------- 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 you please try the following patch?
> 
>  https://lists.gnu.org/archive/html/qemu-devel/2012-11/msg00174.html

I don't think that's related.  The only problem I see here, is that
"qmp_capabilities" can only be executed once.  That's by design, as I
understand it.

What do you get without --enable-kvm?

Paolo