[Qemu-devel] Cross version migration question (RH specific)

[Qemu-devel] Cross version migration question (RH specific)

[Gaurav Poothia]

Hi,
I have some dumb questions about this Red Hat cross version migration
support matrix:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/sect-kvm_live_migration-live_migration_and_red_hat_enterprise_linux_version_compatibility_

Questions:
- Are all RHEL 7.x running the same version of QEMU?
- Then the forward and backward migration support across minor
releases (rows 3 and 4 in grid) is trivial right?
- Does RHEV-H rev the QEMU versions more aggressively across minor versions?
- Where can I find a similar cross version migration support matrix for RHEV?


Thanks!
Gaurav


-- 
Kiva.org - Loans That Change Lives

Re: [Qemu-devel] Cross version migration question (RH specific)

[Dr. David Alan Gilbert]

* Gaurav Poothia (gaurav.poothia@gmail.com) wrote:
> Hi,
> I have some dumb questions about this Red Hat cross version migration
> support matrix:
> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/sect-kvm_live_migration-live_migration_and_red_hat_enterprise_linux_version_compatibility_
> 
> Questions:
> - Are all RHEL 7.x running the same version of QEMU?

They're all a 1.5.3 derivative.

> - Then the forward and backward migration support across minor
> releases (rows 3 and 4 in grid) is trivial right?

Yes, pretty much; we still have to check it of course as we add bug
fixes and things.

> - Does RHEV-H rev the QEMU versions more aggressively across minor versions?

Yes (see the qemu-kvm-rhev packages or in CentOS qemu-kvm-ev)

> - Where can I find a similar cross version migration support matrix for RHEV?

That's a good question; I'm not sure which docs cover that - although
at that level it's not just qemu versions that need considering.
The qemu level is similar to that above though; 6.x inwards is valid,
and some backwards and forwards are allowed within the 7.x range,
even though they're quite different versions of qemu.

Dave

> 
> Thanks!
> Gaurav
> 
> 
> -- 
> Kiva.org - Loans That Change Lives
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK