Re: [Xen-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Friday, April 19, 2013, 9:27:34 AM, you wrote:

> Il 19/04/2013 01:21, Sander Eikelenboom ha scritto:> 
>> Thursday, April 18, 2013, 3:32:37 PM, you wrote:
>> 
>>> Il 18/04/2013 15:27, Stefano Stabellini ha scritto:
>>>>>>
>>>>>>  Any thing that springs to mind ?
>>>> Nope, sorry.
>>>> Given the commit that your bisection identified and the error message,
>>>> it's clear that it's a QMP connection issue from libxl. I would start
>>>> looking in libxl_qmp.c.
>>>> Maybe Anthony (CC'ed) has some ideas.
>> 
>>> What host is this?  It is likely a glib or qemu-char bug (hopefully
>>>  the deadlock that Gerd found on RHEL6) that was latent up to this patch.
>> 
>> The host/Dom0 is Debian squeeze (glibc ) on xen-unstable, using 
>> qemu-upstream.
>> The guest is Debian wheezy.

> What version is glib on the host?

Somewhat more precise:

~# /lib/libc.so.6
GNU C Library (Debian EGLIBC 2.11.3-4) stable release version 2.11.3, by Roland 
McGrath et al.
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Compiled by GNU CC version 4.4.5.
Compiled on a Linux 2.6.32 system on 2012-06-06.
Available extensions:
        crypt add-on version 2.1 by Michael Glad and others
        GNU Libidn by Simon Josefsson
        Native POSIX Threads Library by Ulrich Drepper et al
        BIND-8.2.3-T5B
For bug reporting instructions, please see:
<http://www.debian.org/Bugs/>.


>> and qemu log only shows:
>>     char device redirected to /dev/pts/16 (label serial0)

> Ok, there are patches on the list already for this issue.

> Paolo



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