Problems with running xentrace

Problems with running xentrace

[Karthik Jayaraman]

[-- Attachment #1.1: Type: text/plain, Size: 396 bytes --]

Hi,
I wanted to use the xentrace tool. So I did the build with "trace=y" option. 
However when I used xentrace, I got the following error:
*"Failure* *to* *get* *trace* *buffer* *pointer* *from* *Xen"

*I also tried printing a message from setup.c, where "init_trace_bufs" was 
called. But the message was not printed.

I would appreciate any help in this regard.

Thank you,
Karthik

[-- Attachment #1.2: Type: text/html, Size: 579 bytes --]

[-- Attachment #2: Type: text/plain, Size: 138 bytes --]

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

Re: Problems with running xentrace

[Bin Ren]

Are you using xen-unstable or testing? As for xen-unstable, there were
big changes to xentrace a few days ago, both inside Xen and userspace
tools. I suspect you are running an unstable xen with *stale*
userspace 'xentrace'. Please make sure you have rebuilt 'tools' as
well.

Cheers,
Bin

On Apr 8, 2005 8:26 AM, Karthik Jayaraman <jayaraman.karthik@gmail.com> wrote:
> Hi,
>   I wanted to use the xentrace tool. So I did the build with "trace=y"
> option. However when I used xentrace,  I got the following error:
>  "Failure to get trace buffer pointer from Xen"
>  
>  I also tried printing a message from setup.c, where "init_trace_bufs" was
> called. But the message was not printed.
>  
>  I would appreciate any help in this regard.
>  
>  Thank you,
>  Karthik
>  
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
> 
> 
>

Re: Problems with running xentrace

[Karthik Jayaraman]

On Fri, 8 Apr 2005 09:47:02 +0100, Bin Ren <bin.ren@gmail.com> wrote:
> I suspect you are running an unstable xen with *stale*
> userspace 'xentrace'.

I am using only the stable version of Xen(2.0.5), and I compiled in
the following way:

make trace=y install

Is there any other way this problem could have occured?


> On Apr 8, 2005 8:26 AM, Karthik Jayaraman <jayaraman.karthik@gmail.com>
> wrote:
> > Hi,
> >   I wanted to use the xentrace tool. So I did the build with "trace=y"
> > option. However when I used xentrace,  I got the following error:
> >  "Failure to get trace buffer pointer from Xen"
> >  
> >  I also tried printing a message from setup.c, where "init_trace_bufs" was
> > called. But the message was not printed.
> >  
> >  I would appreciate any help in this regard.
> >  
> >  Thank you,
> >  Karthik
> >  
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xensource.com
> > http://lists.xensource.com/xen-devel
> > 
> > 
> >
> 

Thanks,
Karthik

Re: Re: Problems with running xentrace

[Mark Williamson]

Try doing a make clean before your make trace=y install.  The makefile doesn't 
allow make to identify what files need rebuilding when you add trace, debug, 
etc. to the rebuild, so you really do need to rebuild from scratch.

Cheers,
Mark

On Friday 08 April 2005 14:45, Karthik Jayaraman wrote:
> On Fri, 8 Apr 2005 09:47:02 +0100, Bin Ren <bin.ren@gmail.com> wrote:
> > I suspect you are running an unstable xen with *stale*
> > userspace 'xentrace'.
>
> I am using only the stable version of Xen(2.0.5), and I compiled in
> the following way:
>
> make trace=y install
>
> Is there any other way this problem could have occured?
>
> > On Apr 8, 2005 8:26 AM, Karthik Jayaraman <jayaraman.karthik@gmail.com>
> >
> > wrote:
> > > Hi,
> > >   I wanted to use the xentrace tool. So I did the build with "trace=y"
> > > option. However when I used xentrace,  I got the following error:
> > >  "Failure to get trace buffer pointer from Xen"
> > >
> > >  I also tried printing a message from setup.c, where "init_trace_bufs"
> > > was called. But the message was not printed.
> > >
> > >  I would appreciate any help in this regard.
> > >
> > >  Thank you,
> > >  Karthik
> > >
> > > _______________________________________________
> > > Xen-devel mailing list
> > > Xen-devel@lists.xensource.com
> > > http://lists.xensource.com/xen-devel
>
> Thanks,
> Karthik
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel