Re: [Xen-devel] [PATCH] allow xendomains to work for xl list -l

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2013-04-09 at 21:05 +0100, M A Young wrote:
> From xen 4.2 onwards xl list -l gives a JSON format output containing no 
> spaces or line feeds, but the xendomains script expects the older format 
> (of xl in xen 4.1 and xm) of one key-value pair per line.

Hrm, I'm not sure this change was intentional and I don't recall a patch
which did this on purpose. Ideally xl list would remain somewhat human
readable even if it is also machine readable.

I wonder if this is yajl v1 vs v2 specific? For v1 libxl_yajl_gen_alloc
creates a yajl_gen_config with beautify = 1 and passes it to
yajl_gen_alloc.

For v2 however yajl_gen_alloc doesn't take such an option. It looks like
we are instead supposed to call yajl_gen_config with yajl_gen_beautify.
We probably also want to set yajl_gen_indent_string to "    " (although
that might be the default from my reading).

I don't have a yajl2 test system handy -- could you try that though?

[...]
>  and accepts the "Xen saved 
> domain" as a valid header for a saved xen image if xl is being used.

This bit sounds independently useful too. ISTR someone else sending a
similar patch but it fell through the cracks for some reason which I
don't remember and I can't find it now.

Ian.



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