[ovirt-devel] Where's MOM (on latest master)

Fri Nov 18 11:07:33 UTC 2016

Hello Martin.

It does. But from 4.0 as I see we support only systemd enabled distros so
it might make sense.

Anton.

On Fri, Nov 18, 2016 at 11:59 AM, Martin Sivak <msivak at redhat.com> wrote:

> > Are we / can we use systemd socket activation there?
>
> That actually requires systemd specific code iirc (to take over the
> standing by socket). I am actually wondering why the xml-rpc in 4.0.4
> was fine and json-rpc in 4.0.6 is too slow.
>
> Martin
>
> On Fri, Nov 18, 2016 at 11:53 AM, Anton Marchukov <amarchuk at redhat.com>
> wrote:
> > Hello All.
> >
> > Are we / can we use systemd socket activation there?
> >
> > Anton.
> >
> > On Fri, Nov 18, 2016 at 11:21 AM, Martin Sivak <msivak at redhat.com>
> wrote:
> >>
> >> What about making vdsm ready to answer connections when it returns to
> >> systemd instead? I hate workarounds and this always worked fine.
> >>
> >> Martin
> >>
> >> On Fri, Nov 18, 2016 at 11:13 AM, Oved Ourfali <oourfali at redhat.com>
> >> wrote:
> >> > Seems like a race regardless of the protocol.
> >> > Should you add a retry?
> >> >
> >> >
> >> > On Nov 18, 2016 11:52 AM, "Martin Sivak" <msivak at redhat.com> wrote:
> >> >>
> >> >> Yes, because VDSM is supposed to be up (there is systemd dependency).
> >> >> This always worked fine with xml-rpc.
> >> >>
> >> >> Martin
> >> >>
> >> >> On Fri, Nov 18, 2016 at 10:14 AM, Nir Soffer <nsoffer at redhat.com>
> >> >> wrote:
> >> >> > On Fri, Nov 18, 2016 at 10:45 AM, Martin Sivak <msivak at redhat.com>
> >> >> > wrote:
> >> >> >> This happens because MOM can't connect to VDSM and so it quits.
> >> >> >
> >> >> > So mom try once to connect and if the connection fails it quits?
> >> >> >
> >> >> >> We
> >> >> >> discussed it on the mailinglist
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >> https://lists.fedoraproject.org/archives/list/vdsm-devel@
> lists.fedorahosted.org/thread/MZ7UJUWO5KFRDJJDNXX7VIYU5PWSXF62/
> >> >> >> http://lists.ovirt.org/pipermail/devel/2016-November/014101.html
> >> >> >>
> >> >> >> This issue never happened with XML-RPC.
> >> >> >>
> >> >> >> Shira reported it as
> >> >> >> https://bugzilla.redhat.com/show_bug.cgi?id=1393012
> >> >> >>
> >> >> >> Martin
> >> >> >>
> >> >> >> On Thu, Nov 17, 2016 at 7:42 PM, Yaniv Kaul <ykaul at redhat.com>
> >> >> >> wrote:
> >> >> >>> I've recently seen, including now on Master, the following
> >> >> >>> warnings:
> >> >> >>> Nov 17 13:33:25 lago-basic-suite-master-host0 systemd[1]: Started
> >> >> >>> MOM
> >> >> >>> instance configured for VDSM purposes.
> >> >> >>> Nov 17 13:33:25 lago-basic-suite-master-host0 systemd[1]:
> Starting
> >> >> >>> MOM
> >> >> >>> instance configured for VDSM purposes...
> >> >> >>> Nov 17 13:33:35 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available, Policy could not be set.
> >> >> >>> Nov 17 13:33:39 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available.
> >> >> >>> Nov 17 13:33:39 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available, KSM stats will be missing.
> >> >> >>> Nov 17 13:33:55 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available.
> >> >> >>> Nov 17 13:33:55 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available, KSM stats will be missing.
> >> >> >>> Nov 17 13:34:10 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available.
> >> >> >>> Nov 17 13:34:10 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available, KSM stats will be missing.
> >> >> >>> Nov 17 13:34:26 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available.
> >> >> >>> Nov 17 13:34:26 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available, KSM stats will be missing.
> >> >> >>> Nov 17 13:34:42 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available.
> >> >> >>> Nov 17 13:34:42 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available, KSM stats will be missing.
> >> >> >>> Nov 17 13:34:57 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available.
> >> >> >>> Nov 17 13:34:57 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available, KSM stats will be missing.
> >> >> >>> Nov 17 13:35:12 lago-basic-suite-master-host0 vdsm[2012]: vdsm
> MOM
> >> >> >>> WARN MOM
> >> >> >>> not available.
> >> >> >>>
> >> >> >>>
> >> >> >>>
> >> >> >>> Any ideas what this is and why?
> >> >> >>>
> >> >> >>> _______________________________________________
> >> >> >>> Devel mailing list
> >> >> >>> Devel at ovirt.org
> >> >> >>> http://lists.ovirt.org/mailman/listinfo/devel
> >> >> >> _______________________________________________
> >> >> >> Devel mailing list
> >> >> >> Devel at ovirt.org
> >> >> >> http://lists.ovirt.org/mailman/listinfo/devel
> >> >> _______________________________________________
> >> >> Devel mailing list
> >> >> Devel at ovirt.org
> >> >> http://lists.ovirt.org/mailman/listinfo/devel
> >> >>
> >> >>
> >> >
> >> _______________________________________________
> >> Devel mailing list
> >> Devel at ovirt.org
> >> http://lists.ovirt.org/mailman/listinfo/devel
> >
> >
> >
> >
> > --
> > Anton Marchukov
> > Senior Software Engineer - RHEV CI - Red Hat
> >
>

-- 
Anton Marchukov
Senior Software Engineer - RHEV CI - Red Hat
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