Re: Log Messages ....

[George Dunlap <george.dunlap@citrix.com>]

On 02/12/15 16:48, kumara rathnavel wrote:
> Hello George,
> 
> Thanks a lot. One more question if  I connect serial port will I be able to
> see what is happening in xen....without using xen trace ....

Please don't top-post. :-)

If you set up a serial console you'll be able to get the same output as
"xl dmesg".

Here's a guide for serial consoles in Xen in case you need it:

http://wiki.xenproject.org/wiki/Xen_Serial_Console

 -George

> On 2 Dec 2015 19:34, "George Dunlap" <George.Dunlap@eu.citrix.com> wrote:
> 
>> On Wed, Dec 2, 2015 at 1:49 PM, kumara rathnavel <kumara.bsd@gmail.com>
>> wrote:
>>> Hello All,
>>>
>>> I require logs of the Hypercalls made from Guest to the Hypervisor after
>> the
>>> boot, as xl dmesg provides me with the log messages during the
>>> initialisation.
>>
>> One thing you could look at is xentrace and xenalyze.  You can find a
>> brief introduction here:
>>
>> https://blog.xenproject.org/2012/09/27/tracing-with-xentrace-and-xenalyze/
>>
>> You can enable Xen tracing on the Xen command-line using the
>> "tbuf_size" and "tevt_mask" parameters described here:
>>
>> http://xenbits.xenproject.org/docs/unstable/misc/xen-command-line.html
>>
>>  -George
>>
>