[ovirt-users] is it possible to run ovirt node on Diskless HW?

[Doron Fediuck]

For standard centos you may see other issues.

For example, let's assume you have a single NIC (eth0).
If you boot your host and then try to add it to the engine,
the host deploy procedure will create try to create a management bridge 
for the VMs using eth0. At this point your host will freeze since your
root FS will be disconnected while creating the bridge.

I've done this ~6 years ago, and it required opening the initrd to handle
the above issue, as well as adding the NIC driver and creating the bridge
at this point. So it's not a trivial task but doable with some hacking.

Doron

----- Original Message -----
> From: "Arman Khalatyan" <arm2arm at gmail.com>
> To: "Doron Fediuck" <dfediuck at redhat.com>
> Cc: "users" <users at ovirt.org>, "Fabian Deutsch" <fdeutsch at redhat.com>, "Ryan Barry" <rbarry at redhat.com>, "Tolik
> Litovsky" <tlitovsk at redhat.com>, "Douglas Landgraf" <dougsland at redhat.com>
> Sent: Sunday, December 7, 2014 7:38:19 PM
> Subject: Re: [ovirt-users] is it possible to run ovirt node on Diskless HW?
> 
> It is centos 6.6 standard one.
> a.
> 
> ***********************************************************
> 
> Dr. Arman Khalatyan eScience -SuperComputing Leibniz-Institut für
> Astrophysik Potsdam (AIP) An der Sternwarte 16, 14482 Potsdam, Germany
> 
> ***********************************************************
> 
> 
> On Sun, Dec 7, 2014 at 6:04 PM, Doron Fediuck <dfediuck at redhat.com> wrote:
> 
> >
> >
> > ----- Original Message -----
> > > From: "Arman Khalatyan" <arm2arm at gmail.com>
> > > To: "users" <users at ovirt.org>
> > > Sent: Wednesday, December 3, 2014 6:50:09 PM
> > > Subject: [ovirt-users] is it possible to run ovirt node on Diskless HW?
> > >
> > > Hello,
> > >
> > > Doing steps in:
> > >
> > https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/diskless-nfs-config.html
> > >
> > > I would like to know is some one succeeded to run the host on a diskless
> > > machine?
> > > i am using Centos6.6 node with ovirt 3.5.
> > > Thanks,
> > > Arman.
> > >
> > >
> > >
> > >
> > > ***********************************************************
> > > Dr. Arman Khalatyan eScience -SuperComputing Leibniz-Institut für
> > Astrophysik
> > > Potsdam (AIP) An der Sternwarte 16, 14482 Potsdam, Germany
> > > ***********************************************************
> > >
> >
> > Hi Arman,
> > Are you working with ovirt node or standard CentOS?
> >
> > Note that ovirt node is different as it's works like a live cd-
> > it runs from memory. In order to save some configurations (such
> > as networking) the local disk is used.
> >
>