Question about local migration between containers

[Or Shoval]

Hi Daniel,
thanks for the quick reply

we did try to override SMBIOS
host_uuid_source = "machine-id"

and it didn't work even that nodes have different

[root at modi01 kubevirt]# ./cluster-up/ssh.sh  kind-1.17.0-worker
root at kind-1:/# cat /etc/machine-id

[root at modi01 kubevirt]# ./cluster-up/ssh.sh  kind-1.17.0-control-plane
root at kind-1:/# cat /etc/machine-id
71ebb3fc051a48b2b45345b67bb1002b

Thanks


On Thu, Mar 26, 2020 at 5:05 PM Daniel P. Berrangé <berrange at redhat.com>
wrote:

> On Thu, Mar 26, 2020 at 04:47:50PM +0200, Or Shoval wrote:
> > Hello
> >
> > On kubevirt project we are using IpV6 Kind cluster,
> > and trying to support migration,
> >
> > but since both of the containers are on the same host
> > we get this error
> >
> > {"component":"virt-launcher","level":"error","msg":"internal error:
> Attempt
> > to migrate guest to the same host
> >
> 32323136-3731-4247-3831-303946353338","pos":"virNetClientProgramDispatchError:172","subcomponent":"libvirt","thread":"44",
> > "timestamp":"2020-03-25T10:41:12.123000Z"}
> >
> > Is there a way to work around this please ?
> >
> > it comes of course from
> >
> https://github.com/libvirt/libvirt/blob/master/src/qemu/qemu_migration_cookie.c#L1254
> >
> > (not sure what version of libvirt i have but it shows the uuid so i guess
> > this is the one)
>
> The link above points to git master, which only checks the UUID. This
> was released in 6.2.0
>
> All versions of libvirt before 6.2.0, will also check the hostname for
> equality.
>
>
> Since you're inside a container you should be able to set an arbitrary
> hostname for each container.
>
> For the UUID, we obtain the value from SMBIOS data tables. To override
> this there is a parameter in /etc/libvirt/libvirtd.conf.
>
> Regards,
> Daniel
> --
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