[Engine-devel] vds_dynamic refactor

[Gilad Chaplik]

----- Original Message -----
> From: "Liran Zelkha" <liran.zelkha at gmail.com>
> To: "Gilad Chaplik" <gchaplik at redhat.com>
> Cc: "Eli Mesika" <emesika at redhat.com>, "engine-devel" <engine-devel at ovirt.org>
> Sent: Thursday, April 3, 2014 5:16:51 PM
> Subject: Re: [Engine-devel] vds_dynamic refactor
> 
> Don't go down that road.  Status shouldn't be saved in the db.
> But anyway statistics is rapidly changing. So it fits...

First let's have a notion of caching, then notion of shared caching, then I can start thinking of not going down that road...

> On Apr 3, 2014 5:14 PM, "Gilad Chaplik" <gchaplik at redhat.com> wrote:
> 
> > ----- Original Message -----
> > > From: "Liran Zelkha" <liran.zelkha at gmail.com>
> > > To: "Eli Mesika" <emesika at redhat.com>
> > > Cc: "Gilad Chaplik" <gchaplik at redhat.com>, "engine-devel" <
> > engine-devel at ovirt.org>
> > > Sent: Thursday, April 3, 2014 4:36:07 PM
> > > Subject: Re: [Engine-devel] vds_dynamic refactor
> > >
> > > I would be happy if we can lose vds_dynamic all together, and just keep
> > > vds_static and vds_statistics. Our performance will be happy too ;-)
> > >
> >
> > @Liran, status and pending fields are very fragile ones, IMO need separate
> > table.
> > @Eli, iirc, you don't have a problem with adding more tables :-)
> >
> > >
> > > On Thu, Apr 3, 2014 at 4:33 PM, Eli Mesika <emesika at redhat.com> wrote:
> > >
> > > >
> > > >
> > > > ----- Original Message -----
> > > > > From: "Gilad Chaplik" <gchaplik at redhat.com>
> > > > > To: "Yair Zaslavsky" <yzaslavs at redhat.com>
> > > > > Cc: "engine-devel" <engine-devel at ovirt.org>
> > > > > Sent: Thursday, April 3, 2014 4:00:25 PM
> > > > > Subject: Re: [Engine-devel] vds_dynamic refactor
> > > > >
> > > > > ----- Original Message -----
> > > > > > From: "Yair Zaslavsky" <yzaslavs at redhat.com>
> > > > > > To: "Liran Zelkha" <liran.zelkha at gmail.com>
> > > > > > Cc: "Gilad Chaplik" <gchaplik at redhat.com>, "engine-devel"
> > > > > > <engine-devel at ovirt.org>
> > > > > > Sent: Thursday, April 3, 2014 2:12:59 PM
> > > > > > Subject: Re: [Engine-devel] vds_dynamic refactor
> > > > > >
> > > > > >
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > > From: "Liran Zelkha" <liran.zelkha at gmail.com>
> > > > > > > To: "Gilad Chaplik" <gchaplik at redhat.com>
> > > > > > > Cc: "engine-devel" <engine-devel at ovirt.org>
> > > > > > > Sent: Thursday, April 3, 2014 2:04:29 PM
> > > > > > > Subject: Re: [Engine-devel] vds_dynamic refactor
> > > > > > >
> > > > > > > Why not move it to vds_static?
> > > > > >
> > > > > > +1 on Liran's comment.
> > > >
> > > > +1 as well , vds_static is the place for that
> > > >
> > > > > > I would prefer not to add more complexity to the  vds tables
> > family.
> > > > > > Such complexity may effect performs of queries/views.
> > > > > > If you wish, you can create a view on top of vds_static named
> > > > vds_on_boot
> > > > > > for
> > > > > > querying of vds on boot info.
> > > > > >
> > > > > > Yair
> > > > >
> > > > > That means moving almost all of vds_dynamic into vds_static except of
> > > > memory,
> > > > > pending resources and status (maybe more but not much);
> > > > > and there will not be any db separation between user input and
> > on_boot
> > > > data.
> > > >
> > > > Why we should have such separation ?
> > > >
> > > > >
> > > > > Thanks,
> > > > > Gilad.
> > > > >
> > > > > >
> > > > > > >
> > > > > > >
> > > > > > > On Thu, Apr 3, 2014 at 2:00 PM, Gilad Chaplik <
> > gchaplik at redhat.com>
> > > > > > > wrote:
> > > > > > >
> > > > > > > > Hi list,
> > > > > > > >
> > > > > > > > I propose to split vds_dynamic table into 2 tables:
> > > > > > > > - vds_dynamic
> > > > > > > > - vds_on_boot
> > > > > > > > We need a place to put all non-dynamic data that gets updated
> > once
> > > > the
> > > > > > > > host is booted, and I think dynamic isn't the place for it.
> > > > > > > > In first phase we will put there NUMA host topoplogy, but
> > later on
> > > > > > > > migrate
> > > > > > > > all non-dynamic host data (cpu, os, etc.).
> > > > > > > >
> > > > > > > > thoughts?
> > > > > > > >
> > > > > > > > Thanks,
> > > > > > > > Gilad.
> > > > > > > > _______________________________________________
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> > > > > > > >
> > > > > > >
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