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

["Dr. David Alan Gilbert" <dgilbert@redhat.com>]

* Li, Liang Z (liang.z.li@intel.com) wrote:
> > > > 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.  

Oh, fun.  cc'ing in Andrea.

Dave

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