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Date:      Thu, 05 Feb 2009 20:58:16 +0100
From:      Mister Olli <mister.olli@googlemail.com>
To:        kmacy@freebsd.org
Cc:        freebsd-xen@freebsd.org
Subject:   Re: Time goes backwards
Message-ID:  <1233863896.22204.46.camel@phoenix.blechhirn.net>
In-Reply-To: <8763joeuzz.fsf@tabernacle.localnet>
References:  <877i4d1p46.fsf@tabernacle.localnet> <1233285639.24925.12.camel@phoenix.blechhirn.net> <87ljsokbdn.fsf@tabernacle.localnet> <3c1674c90902042004x299bee3ay7a231a27252e7e55@mail.gmail.com> <8763joeuzz.fsf@tabernacle.localnet>

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hi,


Am Donnerstag, den 05.02.2009, 16:58 +0100 schrieb Julian Stecklina:
> Kip Macy <kmacy@freebsd.org> writes:
> 
> > Can you please try with the latest sources and let me know if you
> > still see this?
> 
> I've tried with r188140 and see no change. It still reverts to Jan 25
> 00:50 every couple of minutes. dmesg is at

The same for me. Setting 'xen.independent_wallclock=0' in the domU and
deactivating ntpd in the domU make the time jumps happen nearly
immediately:
======================================================
virt-001 template_8-CURRENT # while (true); do echo "date"; sleep 10s; done | xm console template_8-CURRENT
Thu Feb  5 20:52:22 CET 2009
template_8-CURRENT# date
Thu Feb  5 20:52:32 CET 2009
template_8-CURRENT# date
Thu Feb  5 20:52:42 CET 2009
template_8-CURRENT# date
Thu Feb  5 20:52:52 CET 2009
template_8-CURRENT# date
Sun Jan 25 00:54:16 CET 2009
template_8-CURRENT# date
Sun Jan 25 00:54:26 CET 2009
template_8-CURRENT# date
Sun Jan 25 00:54:36 CET 2009
template_8-CURRENT# 
virt-001 template_8-CURRENT # echo "uname -a" || xm console template_8-CURRENT
uname -a
virt-001 template_8-CURRENT # echo "uname -a" | xm console template_8-CURRENT
virt-001 template_8-CURRENT # xm console template_8-CURRENT

template_8-CURRENT# uname -a
FreeBSD template_8-CURRENT.blechhirn.net 8.0-CURRENT FreeBSD 8.0-CURRENT #0 r188157: Thu Feb  5 14:53:10 CET 2009     root@template_8-CURRENT.blechhirn.net:/usr/obj/usr/src/sys/freebsd8_XEN  i386
template_8-CURRENT# 



> Btw, when I do 'reboot' in the virtual machine, it just stops and has to
> be recreated.

The same problem here. Even with 
	on_reboot   = 'restart'
in my config file.

Is this a XEN problem, or is it related to the FreeBSD kernel?

--
Mr. Olli




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