Re: [Qemu-devel] post-copy is broken?

["Li, Liang Z" <liang.z.li@intel.com>]

> > > I used the latest qemu code (commit id: 4e71220387e88a22) and kernel
> > (v4.5) to test the post-copy, and find the guest get crashed after
> > live migration, no matter I did a local live migration or live
> > migration between two hosts. I just ran the stress as the workload in
> > guest. It seems the post-copy is broken?
> > >
> > > Stress parameters:  stress --vm 2 --vm-hang 1 --vm-bytes 2048M
> > > --vm-keep QEMU parameters: ./qemu-system-x86_64 --enable-kvm -
> smp
> > 4 -m
> > > 8192  -monitor stdio -drive file=/share/centos6u6.qcow
> >
> > My test seems to be working here (4.4.6-301.fc23 kernel) same qemu
> > version.
> > This is with an f20 guest running google stressapptest.
> >
> > What's your last working version?
> >
> 
> This is my first try of post-copy after the related patches been merged.
> I will double check and get back to you.
> 
> Thanks!
> Liang
> 
> > Dave

I tried the v4.4 upstream kernel, the issue was disappeared. It must be some changes between kernel v4.4 and v4.5
breaks post-copy.  

Liang.

> >
> > > Liang
> > --
> > Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK