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Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts,
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest? |
Date: |
Fri, 18 Jan 2019 19:31:02 +0000 |
User-agent: |
Mutt/1.10.1 (2018-07-13) |
* Paolo Bonzini (address@hidden) wrote:
> On 18/01/19 14:41, Mark Mielke wrote:
> > It is useful to understand the risk. However, this is the same risk we
> > have been successfully living with for several years now, and it seems
> > abrupt to declare 3.1 and 3.2 as the Qemu version beyond which migration
> > requires a whole cluster restart whether or not a L2 guest had been, or
> > will ever be started on any of the guests.
>
> Only if nested was enabled for the kvm_intel module. If you didn't
> enable it, you didn't see any change with 3.1.
>
> Nested was enabled for kvm_amd years ago. It was a mistake, but that's
> why we didn't add such a blocker for AMD.
Still, it should have probably been machine-type tied; there's lots and
lots of broken things we've done in the past which we've kept
compatibility with on old machine types.
Dave
> Paolo
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK
- [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Mark Mielke, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Christian Ehrhardt, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Dr. David Alan Gilbert, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Paolo Bonzini, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Dr. David Alan Gilbert, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Daniel P . Berrangé, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Paolo Bonzini, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Mark Mielke, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Paolo Bonzini, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?,
Dr. David Alan Gilbert <=
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Mark Mielke, 2019/01/22
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Daniel P . Berrangé, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Mark Mielke, 2019/01/18
- Re: [Qemu-devel] Live migration from Qemu 2.12 hosts to Qemu 3.2 hosts, with VMX flag enabled in the guest?, Daniel P . Berrangé, 2019/01/18