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

[Marcelo Tosatti]

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

Peter,

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

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