Hi, I've gone through installing VDSM on RHEL7 host (Red Hat Enterprise Linux Server release 7.0 (Maipo)) and encountered issue with mom: Error: Package: mom-0.4.1-2.el6.noarch (ovirt-3.5-epel) Requires: python(abi) = 2.6 Installed: python-2.7.5-16.el7.x86_64 (@rhel7) python(abi) = 2.7 python(abi) = 2.7 Repositories used were master, master-snapshots and 3.5 + dependancies. Although it is possible to get it working by getting mom source and rebuilding it on RHEL7, I'd like to know if there is different RHEL7 repo or this is mistake in repos.

----- Original Message ----- > From: "Dan Kenigsberg" <danken(a)redhat.com&gt; > To: "Martin Polednik" <mpolednik(a)redhat.com&gt;, dcaro(a)redhat.com > Cc: devel(a)ovirt.org > Sent: Wednesday, July 23, 2014 12:19:42 PM > Subject: Re: [ovirt-devel] VDSM mom dependancy on RHEL7 > > On Tue, Jul 22, 2014 at 06:36:10PM -0400, Martin Polednik wrote: > > Hi, > > > > I've gone through installing VDSM on RHEL7 host > > (Red Hat Enterprise Linux Server release 7.0 (Maipo)) and encountered > > issue with mom: > > > > Error: Package: mom-0.4.1-2.el6.noarch (ovirt-3.5-epel) > > Requires: python(abi) = 2.6 > > Installed: python-2.7.5-16.el7.x86_64 (@rhel7) > > python(abi) = 2.7 > > python(abi) = 2.7 > > > > Repositories used were master, master-snapshots and 3.5 + dependancies. > > Although it is possible to get it working by getting mom source and > > rebuilding it on RHEL7, I'd like to know if there is different RHEL7 > > repo or this is mistake in repos. > > http://resources.ovirt.org/pub/ovirt-3.5-pre/rpm/el7/ is quite empty, > I'm afraid. The problem actually occurs when getting mom from http://resources.ovirt.org/pub/ovirt-master-snapshot/rpm/el7/

On 23/07/14 13:18 +0100, Dan Kenigsberg wrote: >On Wed, Jul 23, 2014 at 07:05:07AM -0400, Martin Polednik wrote: >>----- Original Message ----- >>> From: "Dan Kenigsberg" <danken(a)redhat.com&gt; >>> To: "Martin Polednik" <mpolednik(a)redhat.com&gt;, dcaro(a)redhat.com >>> Cc: devel(a)ovirt.org >>> Sent: Wednesday, July 23, 2014 12:19:42 PM >>> Subject: Re: [ovirt-devel] VDSM mom dependancy on RHEL7 >>> >>> On Tue, Jul 22, 2014 at 06:36:10PM -0400, Martin Polednik wrote: >>> > Hi, >>> > >>> > I've gone through installing VDSM on RHEL7 host >>> > (Red Hat Enterprise Linux Server release 7.0 (Maipo)) and encountered >>> > issue with mom: >>> > >>> > Error: Package: mom-0.4.1-2.el6.noarch (ovirt-3.5-epel) >>> > Requires: python(abi) = 2.6 >>> > Installed: python-2.7.5-16.el7.x86_64 (@rhel7) >>> > python(abi) = 2.7 >>> > python(abi) = 2.7 >>> > >>> > Repositories used were master, master-snapshots and 3.5 + dependancies. >>> > Although it is possible to get it working by getting mom source and >>> > rebuilding it on RHEL7, I'd like to know if there is different RHEL7 >>> > repo or this is mistake in repos. >>> >>> http://resources.ovirt.org/pub/ovirt-3.5-pre/rpm/el7/ is quite empty, >>> I'm afraid. >> >>The problem actually occurs when getting mom from >>http://resources.ovirt.org/pub/ovirt-master-snapshot/rpm/el7/ > >mom there >http://resources.ovirt.org/pub/ovirt-master-snapshot/rpm/el7/noarch/mom-0.4.1-0.0.master.20140718.gitfcedb2d.el7.noarch.rpm >is of older version than the one in your ovirt-3.5-epel >(mom-0.4.1-2.el6.noarch). Try disabling ovirt-3.5-epel repo. > >Since el6->el7 upgrade should be possible, el7 packages must have a >higher n-v-r than their el6 diblings. Who is the person that is actually building the mom rpms for the release? It's actually not me :) I am actually a bit confused about how to handle this. Since mom is actually an upstream project that is used by people outside of oVirt releases, I have been maintaining upstream packages in Fedora/epel. We haven't really encountered a situation where oVirt needs to ship something different than what is upstream (but this may come to pass in the future). A couple of questions... 1) Should we even be building mom in the ovirt repos at all?

2) If we need to ensure a smooth upgrade between el6 and el7, does this mean that I need to bump the el7 version every time I upgrade the el6 packages? This seems strange to me.

I think the better solution is to not require a specific version of python (2.6, 2.7, etc) but just < 3 until we support python3.

3) We should probably make vdsm depend on a specific version of MOM. That way we can upgrade the fedora package but have an ovirt host stay on a current stabilized version.