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Re: [Qemu-block] [Qemu-devel] [PATCH v6 00/16] Implement TLS support to

From: Kashyap Chamarthy
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH v6 00/16] Implement TLS support to QEMU NBD server & client
Date: Fri, 12 Feb 2016 14:28:33 +0100
User-agent: Mutt/ (2014-03-12)

On Wed, Feb 10, 2016 at 06:40:58PM +0000, Daniel P. Berrange wrote:


I've applied all the series in this patches, to yesterday's Git master,
so I'm here:

    $ git describe

> Starting a QEMU system emulator built-in NBD server
>   $ qemu-system-x86_64 \
>      -qmp unix:/tmp/qmp,server \
>      -hda /home/berrange/Fedora-Server-netinst-x86_64-23.iso \
>      -object 
> tls-creds-x509,id=tls0,dir=/home/berrange/security/qemutls,endpoint=server

Instead of an ISO, I have this command-line:

    $QEMU \
      -display none \
      -nodefconfig \
      -nodefaults \
      -m 2048 \
      -device virtio-scsi-pci,id=scsi \
      -device virtio-serial-pci \
      -serial stdio \
      -drive file=./cirros-0.3.3.qcow2,format=qcow2,if=virtio \
tls-creds-x509,id=tls0,dir=/export/security/gnutls,endpoint=server \
      -qmp unix:./qmp-sock,server

>   $ qmp-shell /tmp/qmp
>      (qmp) nbd-server-start addr={"host":"localhost","port":"9000"}
>      tls-creds=tls0

However, this invocation seem to work for me, am I doing something wrong?

    $ ./qmp-shell ./qmp-sock
    Welcome to the QMP low-level shell!
    Connected to QEMU 2.5.50
    (QEMU) nbd-server-start addr={'host:'localhost','port':'9000'} 
    {"error": {"class": "GenericError", "desc": "Invalid parameter type for 
'addr', expected: QDict"}}

I also tried the `rlwrap` with UNIX socket approach, the below way.  You
corrected my invocation on #qemu (where I was incorrectly using
'tls-creds' as part of the "addr" struct); hope I got it right this

    $ rlwrap -H ~/.qmp_history socat UNIX-CONNECT:./qmp-sock STDIO
    {"QMP": {"version": {"qemu": {"micro": 50, "minor": 5, "major": 2}, 
"package": ""}, "capabilities": []}}
    { "execute": "qmp_capabilities" }
    {"return": {}}

Which just seems to be running forever, and does not yield anything (I
was expecting a: {"return": {}}).



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