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Re: [Qemu-devel] kvmclock_current_nsec: Assertion `time.tsc_timestamp <=

From: Marcelo Tosatti
Subject: Re: [Qemu-devel] kvmclock_current_nsec: Assertion `time.tsc_timestamp <= migration_tsc'
Date: Tue, 10 Feb 2015 08:50:38 -0200
User-agent: Mutt/1.5.21 (2010-09-15)

On Tue, Feb 10, 2015 at 10:26:33AM +0100, Peter Lieven wrote:
> Hi,
> while migrating vServers from 2.1.0 to 2.2.0 I see the following assertion 
> that seems to have
> been introduced between 2.1.0 and 2.2.0 trigger on the destination. This 
> happens in a serious
> amount of cases. In most cases it works flawlessly on the second attempt to 
> migrate the vServer
> (same source and same destination).
> Any hints how to debug the root cause?
> Thank you,
> Peter


Make sure you have the following commit applied to the host:

commit 7f187922ddf6b67f2999a76dcb71663097b75497
KVM: x86: update masterclock values on TSC writes

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