On Tue, Oct 29, 2019 at 10:00 AM Dominik Holler <dholler@redhat.com> wrote:

On Tue, Oct 29, 2019 at 9:35 AM Galit Rosenthal <grosenth@redhat.com> wrote:

Hi Dominik,

Any updates on this?

Looks like my suspicion is right.

The mapping between the IPv6 addresses of ovirtmgmt and the IPv6 addresses, which are configured to be resolved to hostnames, do not match in OST.

One way would be to disable the resolution to IPv6 at all.

Another way would be to fix the mapping.

Wouldn't it be better to fix the mapping to be more aligned with real world scenarios?

 

Regards,

Galit

On Fri, Oct 25, 2019 at 5:34 PM Dominik Holler <dholler@redhat.com> wrote:

On Fri, Oct 25, 2019 at 3:08 PM Milan Zamazal <mzamazal@redhat.com> wrote:

Hi, I looked at the failing migrations in OST on el8, when running
basic-suite-master with https://gerrit.ovirt.org/#/c/103888/31.  The
migration fails even before started, when Vdsm tries to talk to the
remote Vdsm and can't reach it.  Indeed, there seems to be a networking
problem between the hosts:

  [root@lago-basic-suite-master-host-1 ~]# ping -c 1 lago-basic-suite-master-host-0
  PING lago-basic-suite-master-host-0(lago-basic-suite-master-host-0.lago.local (fd8f:1391:3a82:201::c0a8:c902)) 56 data bytes
  From lago-basic-suite-master-host-1 (fd8f:1391:3a82:200::c0a8:c899): icmp_seq=1 Destination unreachable: Address unreachable

Maybe it is related that the default IP version is flipped from IPv4 in CentOS7 to IPv6 in CentOS8.

This means that if IPv6 is enabled in the dns, it is required to be enabled on the source and destination host.

I will have a detailed look.

 

Regards,
Milan
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--

GALIT ROSENTHAL

SOFTWARE ENGINEER

Red Hat 

galit@redhat.com    T: 972-9-7692230    

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--

Martin Perina
Manager, Software Engineering
Red Hat Czech s.r.o.

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