Re: port-xen/46105: hypervisor-dependent(?) xen crash

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

The following reply was made to PR port-xen/46105; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: Jeff Rizzo <riz%NetBSD.org@localhost>
Cc: gnats-bugs%NetBSD.org@localhost
Subject: Re: port-xen/46105: hypervisor-dependent(?) xen crash
Date: Mon, 27 Feb 2012 18:30:54 +0100

 On Mon, Feb 27, 2012 at 09:21:13AM -0800, Jeff Rizzo wrote:
 > Appears to be only some;  I just tried duplicating the problem (with
 > your patch), and of 5 launches, 2 were 3.1, and one of the two crashed. 
 
 It seemed to crash early enough for the problem to be reliably
 reproductible.
 
 > Unfortunately, it did not seem to print the tiny version.  :/
 > >  I guess there's no way to restricy a domain to some hypervisor versions
 > >  on amazon ?
 > 
 > Nope.
 > 
 > >  
 > >  Also, please apply the attached diff if you can reproduce this.
 > >  It prints the tiny version of the hypervisor, which can help identifing 
 > > bugs
 > >  present.
 > >
 > 
 > It didn't seem to do anything;  maybe I biffed it somehow.
 > 
 > Here is the dmesg from the instance that booted OK:
 > 
 > Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
 >     2006, 2007, 2008, 2009, 2010, 2011, 2012
 >     The NetBSD Foundation, Inc.  All rights reserved.
 > Copyright (c) 1982, 1986, 1989, 1991, 1993
 >     The Regents of the University of California.  All rights reserved.
 > 
 > NetBSD 6.0_BETA (EC2) #1: Mon Feb 27 08:36:48 PST 2012
 >        
 > riz%breadfruit.tastylime.net@localhost:/home/riz/obj.i386/sys/arch/i386/compile/EC2
 > total memory = 615 MB
 > avail memory = 596 MB
 > timecounter: Timecounters tick every 10.000 msec
 > mainbus0 (root)
 > hypervisor0 at mainbus0: Xen version 3.1
 
 Mine now says:
 NetBSD 6.99.3 (XEN3PAE_DOMU) #19: Mon Feb 27 18:27:36 CET 2012
         
bouyer@hop:/dsk/l1/misc/bouyer/tmp/i386/obj/dsk/l1/misc/bouyer/quota2/src/sys/arch/i386/compile/XEN3PAE_DOMU
 total memory = 512 MB
 avail memory = 496 MB
 timecounter: Timecounters tick every 10.000 msec
 cprng kernel: WARNING insufficient entropy at creation.
 mainbus0 (root)
 hypervisor0 at mainbus0: Xen version 3.1.4
 
 I think XENVER_extraversion should work; even Xen 3.0 has it.
 I hope amazon didn't remove it ...
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --