[libvirt] [PATCH] libxl: open libxl log stream with libvirtd log_level

[Jim Fehlig]

Daniel P. Berrange wrote:
> On Tue, Sep 15, 2015 at 09:26:23AM -0600, Jim Fehlig wrote:
>   
>> Instead of a hardcoded DEBUG log level, use the overall
>> daemon log level specified in libvirtd.conf when opening
>> a log stream with libxl. libxl is very verbose when DEBUG
>> log level is set, resulting in huge log files that can
>> potentially fill a disk. Control of libxl verbosity should
>> be placed in the administrator's hands.
>>
>> Signed-off-by: Jim Fehlig <jfehlig at suse.com>
>> ---
>>  src/libxl/libxl_conf.c | 18 +++++++++++++++++-
>>  1 file changed, 17 insertions(+), 1 deletion(-)
>>     
>
> ACK, this makes sense as default behaviour. As a future enhancement
> you might also consider supporting a config setting in /etc/libvirt/libxl.conf
> to explicitly control the libxl library logging behaviour independantly.
>   

I had actually thought of adding it there first, but then took this
approach assuming it would be more receptive upstream :-). Personally,
I'm on the fence. I like the idea of a single knob to control log level
throughout the daemon, making it a bit easier on admins. On the other
hand, individual knobs are more friendly to those pouring through logs.
I can add a knob in libxl.conf if preferred.

Regards,
Jim