OST: Failing migrations on el8
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 Regards, Milan
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 _______________________________________________ Devel mailing list -- devel@ovirt.org To unsubscribe send an email to devel-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/devel@ovirt.org/message/E3Z3RDMSYQ7GTX...
Hi Dominik, Any updates on this? 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 _______________________________________________ Devel mailing list -- devel@ovirt.org To unsubscribe send an email to devel-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/devel@ovirt.org/message/E3Z3RDMSYQ7GTX...
-- GALIT ROSENTHAL SOFTWARE ENGINEER Red Hat <https://www.redhat.com/> galit@redhat.com T: 972-9-7692230 <https://red.ht/sig>
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.
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 _______________________________________________ Devel mailing list -- devel@ovirt.org To unsubscribe send an email to devel-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/devel@ovirt.org/message/E3Z3RDMSYQ7GTX...
--
GALIT ROSENTHAL
SOFTWARE ENGINEER
Red Hat
galit@redhat.com T: 972-9-7692230 <https://red.ht/sig>
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 _______________________________________________ Devel mailing list -- devel@ovirt.org To unsubscribe send an email to devel-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/devel@ovirt.org/message/E3Z3RDMSYQ7GTX...
--
GALIT ROSENTHAL
SOFTWARE ENGINEER
Red Hat
galit@redhat.com T: 972-9-7692230 <https://red.ht/sig>
_______________________________________________ Devel mailing list -- devel@ovirt.org To unsubscribe send an email to devel-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/devel@ovirt.org/message/F3IEUWC4S2MCET...
-- Martin Perina Manager, Software Engineering Red Hat Czech s.r.o.
On Tue, Oct 29, 2019 at 11:00 AM Martin Perina <mperina@redhat.com> wrote:
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?
AFAIK that wouldn't that easy. Getting DNS with lago and IPv6 to work might be tricky. For example he-ipv6 uses "hacks" with /etc/hosts to achieve connectivity over IPv6 only.
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 _______________________________________________ Devel mailing list -- devel@ovirt.org To unsubscribe send an email to devel-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/devel@ovirt.org/message/E3Z3RDMSYQ7GTX...
--
GALIT ROSENTHAL
SOFTWARE ENGINEER
Red Hat
galit@redhat.com T: 972-9-7692230 <https://red.ht/sig>
_______________________________________________ Devel mailing list -- devel@ovirt.org To unsubscribe send an email to devel-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/devel@ovirt.org/message/F3IEUWC4S2MCET...
-- Martin Perina Manager, Software Engineering Red Hat Czech s.r.o. _______________________________________________ Devel mailing list -- devel@ovirt.org To unsubscribe send an email to devel-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/devel@ovirt.org/message/22CBOFPT33V4TI...
-- Ales Musil Associate Software Engineer - RHV Network Red Hat EMEA <https://www.redhat.com> amusil@redhat.com IM: amusil <https://red.ht/sig>
participants (5)
-
Ales Musil -
Dominik Holler -
Galit Rosenthal -
Martin Perina -
Milan Zamazal