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Re: [Qemu-devel] [RFC] Defining firmware (OVMF, et al) metadata format &
From: |
Kashyap Chamarthy |
Subject: |
Re: [Qemu-devel] [RFC] Defining firmware (OVMF, et al) metadata format & file |
Date: |
Mon, 9 Apr 2018 11:02:44 +0200 |
User-agent: |
Mutt/1.9.2 (2017-12-15) |
On Fri, Apr 06, 2018 at 08:21:00PM +0200, Laszlo Ersek wrote:
> On 04/06/18 20:10, Eric Blake wrote:
[...]
> # key=value pairs also support Python or JSON object literal subset notations,
> # without spaces. Dictionaries/objects {} are supported as are arrays [].
> #
> # example-command arg-name1={'key':'value','obj'={'prop':"value"}}
> #
> # Both JSON and Python formatting should work, including both styles of
> # string literal quotes. Both paradigms of literal values should work,
> # including null/true/false for JSON and None/True/False for Python.
A couple of examples of the the key-value pairs and using JSON dicts
with 'qmp-shell'.
Key-value pairs:
(QEMU) blockdev-snapshot node=node-Base snapshot-file=./overlay1.qcow2
overlay=node-Overlay1
[...]
A combination key-value pairs and JSON dicts:
(QEMU) blockdev-add driver=qcow2 node-name=node-overlay1
file={"driver":"file","filename":"overlay1.qcow2"}
[...]
> This looks awesome, because it should let me provide messy nested input
> (which I'll obviously compose in my $EDITOR and then paste it), and then
> the QMP shell will both validate and pretty print that. I'm going to try
> this.
A couple of notes when using the 'qmp-shell':
- Assuming you started QEMU with: `[...] -qmp
unix:/tmp/qmp-sock,server,nowait`, you might want to use the '-p'
command-line option to prett-print the JSON:
$ qmp-shell -v -p /tmp/qmp-sock
- It also provides a persistent command history in a convenient file:
'~/.qmp-shell_history'
--
/kashyap