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Re: [Xen-devel] how to turn on tracing in xen

  • To: "Anurag Agarwal" <anurag_agarwal@xxxxxxxxxxxx>
  • From: "George Dunlap " <dunlapg@xxxxxxxxx>
  • Date: Fri, 23 Jun 2006 10:42:13 -0400
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 23 Jun 2006 07:42:36 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Until recently in the -unstable tree, setsize would return weird error
messages even if it did what it was supposed to do.  Look at the
console i/o and see if it says that tracing has been enabled, and try
using xentrace.  If xentrace works, just ignore the error messages.
Presumably the fixes in -unstable will make it into xen 3.0.3.


On 6/22/06, Anurag Agarwal <anurag_agarwal@xxxxxxxxxxxx> wrote:

How do I turn on tracing in the Xen. I am using xen 3.0.2. I could not
find a config option to turn ON tracing.
setsize fails with :

# setsize 20
Failure to get tbuf info from Xen. Guess size is 0: Invalid argument
This may mean that tracing is not enabled in xen.
set_size Hypercall failure: Invalid argument

May I know how to turn it on?


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