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

[Peter Lieven]

Am 10.02.2015 um 10:49 schrieb Paolo Bonzini:
> On 10/02/2015 10:26, 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?
> How can anyone help without knowing anything about your configuration? :)

My hope was that anyone has observed this post 2.2.0 already and there
is a fix available ;-)

Can you indicate what info would be helpful debugging this?

Cmdline is:
/usr/bin/qemu-2.2.0  -enable-kvm  -M pc-i440fx-2.1  -nodefaults -netdev type=tap,id=guest19,script=no,downscript=no,ifname=tap19,vnet_hdr -device virtio-net-pci,netdev=guest19,mac=52:54:00:80:00:55 -netdev 
type=tap,id=guest20,script=no,downscript=no,ifname=tap20,vnet_hdr -device virtio-net-pci,netdev=guest20,mac=52:54:00:80:00:6f -netdev type=tap,id=guest21,script=no,downscript=no,ifname=tap21,vnet_hdr -device 
virtio-net-pci,netdev=guest21,mac=52:54:00:80:00:75 -serial null  -parallel null  -m 496 -monitor tcp:0:4011,server,nowait -vnc :11 -qmp tcp:0:3011,server,nowait  -name 'gw-5000123'  -boot order=nc,menu=on  -drive 
index=2,media=cdrom,if=ide,cache=unsafe,aio=native,readonly=on  -k de  -incoming tcp:0:5011  -pidfile /var/run/qemu/vm-115.pid -mem-path /hugepages  -mem-prealloc  -rtc base=utc -usb -usbdevice tablet -no-hpet -vga vmware  -cpu qemu64

Linux guest kernels observed so far:
 3.2.0
 3.13

Thanks,
Peter