[vdsm] Recent changes in vdsmd startup

Thu Oct 10 20:40:36 UTC 2013

Is this what happened with the network functional testing? After these
last changes, before the yum install of the new vdsm and the yum erase
of the old I had to add the vdsm-tool libvirt reconfigure and start.
Otherwise vdsm would not be able to reply to VdsGetCaps (on f19, on el6
somehow it didn't happen).

----- Original Message -----
> From: "Dan Kenigsberg" <danken at redhat.com>
> To: "Alon Bar-Lev" <alonbl at redhat.com>
> Cc: "arch" <arch at ovirt.org>, "VDSM Project Development" <vdsm-devel at lists.fedorahosted.org>
> Sent: Thursday, October 10, 2013 10:34:10 PM
> Subject: Re: [vdsm] Recent changes in vdsmd startup
> 
> On Thu, Oct 10, 2013 at 01:51:00PM -0400, Alon Bar-Lev wrote:
> > 
> > 
> > ----- Original Message -----
> > > From: "Itamar Heim" <iheim at redhat.com>
> > > To: "Alon Bar-Lev" <alonbl at redhat.com>
> > > Cc: "Yaniv Bronheim" <ybronhei at redhat.com>, "arch" <arch at ovirt.org>,
> > > "VDSM Project Development"
> > > <vdsm-devel at lists.fedorahosted.org>
> > > Sent: Thursday, October 10, 2013 8:33:39 PM
> > > Subject: Re: [vdsm] Recent changes in vdsmd startup
> > > 
> > > On 10/10/2013 07:47 PM, Alon Bar-Lev wrote:
> > > >
> > > >
> > > > ----- Original Message -----
> > > >> From: "Itamar Heim" <iheim at redhat.com>
> > > >> To: "Alon Bar-Lev" <alonbl at redhat.com>
> > > >> Cc: "Yaniv Bronheim" <ybronhei at redhat.com>, "arch" <arch at ovirt.org>,
> > > >> "VDSM
> > > >> Project Development"
> > > >> <vdsm-devel at lists.fedorahosted.org>
> > > >> Sent: Thursday, October 10, 2013 7:45:36 PM
> > > >> Subject: Re: [vdsm] Recent changes in vdsmd startup
> > > >>
> > > >> On 10/10/2013 07:43 PM, Alon Bar-Lev wrote:
> > > >>>
> > > >>>
> > > >>> ----- Original Message -----
> > > >>>> From: "Itamar Heim" <iheim at redhat.com>
> > > >>>> To: "Alon Bar-Lev" <alonbl at redhat.com>
> > > >>>> Cc: "Yaniv Bronheim" <ybronhei at redhat.com>, "arch" <arch at ovirt.org>,
> > > >>>> "VDSM
> > > >>>> Project Development"
> > > >>>> <vdsm-devel at lists.fedorahosted.org>
> > > >>>> Sent: Thursday, October 10, 2013 7:39:35 PM
> > > >>>> Subject: Re: [vdsm] Recent changes in vdsmd startup
> > > >>>>
> > > >>>> On 10/10/2013 07:38 PM, Alon Bar-Lev wrote:
> > > >>>>>
> > > >>>>>
> > > >>>>> ----- Original Message -----
> > > >>>>>> From: "Itamar Heim" <iheim at redhat.com>
> > > >>>>>> To: "Yaniv Bronheim" <ybronhei at redhat.com>
> > > >>>>>> Cc: "arch" <arch at ovirt.org>, "VDSM Project Development"
> > > >>>>>> <vdsm-devel at lists.fedorahosted.org>
> > > >>>>>> Sent: Thursday, October 10, 2013 7:37:14 PM
> > > >>>>>> Subject: Re: [vdsm] Recent changes in vdsmd startup
> > > >>>>>>
> > > >>>>>> On 10/10/2013 05:38 PM, Yaniv Bronheim wrote:
> > > >>>>>>>
> > > >>>>>>>
> > > >>>>>>> ----- Original Message -----
> > > >>>>>>>> From: "Itamar Heim" <iheim at redhat.com>
> > > >>>>>>>> To: "Yaniv Bronheim" <ybronhei at redhat.com>
> > > >>>>>>>> Cc: "VDSM Project Development"
> > > >>>>>>>> <vdsm-devel at lists.fedorahosted.org>,
> > > >>>>>>>> "arch"
> > > >>>>>>>> <arch at ovirt.org>
> > > >>>>>>>> Sent: Thursday, October 10, 2013 5:24:40 PM
> > > >>>>>>>> Subject: Re: Recent changes in vdsmd startup
> > > >>>>>>>>
> > > >>>>>>>> On 10/10/2013 04:32 PM, Yaniv Bronheim wrote:
> > > >>>>>>>>> Hey Everybody,
> > > >>>>>>>>> FYI, Recently we merged a fix that changes the way vdsmd
> > > >>>>>>>>> starts.
> > > >>>>>>>>> Before
> > > >>>>>>>>> that "service vdsmd start" command performed its main logic in
> > > >>>>>>>>> addition
> > > >>>>>>>>> to
> > > >>>>>>>>> related services manipulation, as configure libvirt service and
> > > >>>>>>>>> restart
> > > >>>>>>>>> it
> > > >>>>>>>>> for example.
> > > >>>>>>>>> Now we are trying to avoid that and only alert the user if
> > > >>>>>>>>> restart
> > > >>>>>>>>> or
> > > >>>>>>>>> other
> > > >>>>>>>>> operations on related services are required.
> > > >>>>>>>>>
> > > >>>>>>>>> So now when you perform vdsmd start after clear installation
> > > >>>>>>>>> you
> > > >>>>>>>>> will
> > > >>>>>>>>> see:
> > > >>>>>>>>> ~$ sudo service vdsmd restart
> > > >>>>>>>>> Shutting down vdsm daemon:
> > > >>>>>>>>> vdsm watchdog stop                                         [
> > > >>>>>>>>> OK  ]
> > > >>>>>>>>> vdsm: not running
> > > >>>>>>>>> [FAILED]
> > > >>>>>>>>> vdsm: Running run_final_hooks
> > > >>>>>>>>> vdsm stop                                                  [
> > > >>>>>>>>> OK  ]
> > > >>>>>>>>> supervdsm start                                            [
> > > >>>>>>>>> OK  ]
> > > >>>>>>>>> vdsm: Running run_init_hooks
> > > >>>>>>>>> vdsm: Running gencerts
> > > >>>>>>>>> hostname: Unknown host
> > > >>>>>>>>> vdsm: Running check_libvirt_configure
> > > >>>>>>>>> libvirt is not configured for vdsm yet
> > > >>>>>>>>> Perform 'vdsm-tool libvirt-configure' before starting vdsmd
> > > >>>>>>>>> vdsm: failed to execute check_libvirt_configure, error code 1
> > > >>>>>>>>> vdsm start
> > > >>>>>>>>> [FAILED]
> > > >>>>>>>>>
> > > >>>>>>>>> This asks you to run "vdsm-tool libvirt-configure"
> > > >>>>>>>>> After running it you should see:
> > > >>>>>>>>>
> > > >>>>>>>>> ~$ sudo vdsm-tool libvirt-configure
> > > >>>>>>>>> Stopping libvirtd daemon: [  OK  ]
> > > >>>>>>>>> libvirt is not configured for vdsm yet
> > > >>>>>>>>> Reconfiguration of libvirt is done.
> > > >>>>>>>>>
> > > >>>>>>>>> To start working with the new configuration, execute:
> > > >>>>>>>>> 'vdsm-tool libvirt-configure-services-restart'
> > > >>>>>>>>> This will manage restarting of the following services:
> > > >>>>>>>>> libvirtd, supervdsmd
> > > >>>>>>>>>
> > > >>>>>>>>> After performing: 'vdsm-tool
> > > >>>>>>>>> libvirt-configure-services-restart'
> > > >>>>>>>>> you
> > > >>>>>>>>> are
> > > >>>>>>>>> ready to start vdsmd again as usual.
> > > >>>>>>>>>
> > > >>>>>>>>> All those vdsm-tool commands require root privileges, otherwise
> > > >>>>>>>>> it'll
> > > >>>>>>>>> alert
> > > >>>>>>>>> and stop the operation.
> > > >>>>>>>>> Over systemd the errors\output can be watched in
> > > >>>>>>>>> /var/log/messages
> > > >>>>>>>>>
> > > >>>>>>>>> Thanks,
> > > >>>>>>>>> Yaniv Bronhaim.
> > > >>>>>>>>> _______________________________________________
> > > >>>>>>>>> Arch mailing list
> > > >>>>>>>>> Arch at ovirt.org
> > > >>>>>>>>> http://lists.ovirt.org/mailman/listinfo/arch
> > > >>>>>>>>>
> > > >>>>>>>>
> > > >>>>>>>> how will this affect the following use cases:
> > > >>>>>>>>
> > > >>>>>>>> 1. i added a new host to the system via the engine.
> > > >>>>>>>> at the end of the installation i expect the host to work without
> > > >>>>>>>> admin
> > > >>>>>>>> having to do any operation on the host.
> > > >>>>>>>>
> > > >>>>>>>> 2. i update a host to latest vdsm version via the engine.
> > > >>>>>>>> at the end of the update i expect the host to be updated without
> > > >>>>>>>> admin
> > > >>>>>>>> having to do any operation on the host
> 
> I think we've quite neglected a third case, of unattended `yum upgrade
> -y`.
> 
> If and when we need to update BY_VDSM_VERS, this would result in a
> failure to restart vdsm. How should we handle that? I do not see a way
> other than adding libvirt-configure and libvirt condrestart to vdsm
> %postin.
> 
> Dan.
> _______________________________________________
> vdsm-devel mailing list
> vdsm-devel at lists.fedorahosted.org
> https://lists.fedorahosted.org/mailman/listinfo/vdsm-devel
> 