Re: [Qemu-devel] Problems about "live backup vm" patch, which is issued by Wenchao Xia.

[Wenchao Xia]

Hi, Liu Ji
  Thanks for trying my trival patch. That patch is based on the version
before qemu-1.3, and since qemu have important change about migration
from Juan after that, So I think it would not work since 1.3.

  I am trying to fix the size problem now, and then reimplement a formal
patch of "live savevm" after that, as part of the incremental backup
enhancement, you can take a look of the plan at:
http://wiki.qemu.org/Features/VMSnapshotEnchancement
  Pls forgive me about the latency of the work, I have just come back
from vacation.:)

> Hello Wenchao Xia，
> I am very interested in your "live backup vm" patch of qemu, which have
> been sent to qemu-devel mail-list in "8 Dec 2012".
> http://lists.gnu.org/archive/html/qemu-devel/2012-12/msg00800.html
> 
> I have test your patch in qemu-1.3.1, but I have two problems:
> 
> 1) After I exec the "migrate image:" command, although the CPU of VM is not
> suspended, the running of VM is very slow. It is very difficult to operate
> the VM
> 
> by Spice.
> 2) When I "loadvm" the snapshot which is create by the "migrate image:"
> command, the Qemu output error. I change the version of qemu to 1.3.0, the
> "loadvm"
> 
> caused a crash.
> Could you tell me which baseline version of qemu you used? And do you have
> the same problems?
> Do you have optimized the patch, and can you provide the latest patch for
> me?
> 
> Thanks.
> 


-- 
Best Regards

Wenchao Xia