[Engine-devel] PosixFS: GUI mock-ups have been updated

[Einav Cohen]

> ----- Original Message -----
> From: "Andrew Cathrow" <acathrow at redhat.com>
> Sent: Friday, May 11, 2012 5:15:51 PM
> 
> ----- Original Message -----
> > From: "Geert Jansen" <gjansen at redhat.com>
> > To: "Ayal Baron" <abaron at redhat.com>
> > Cc: "Andrew Cathrow" <acathrow at redhat.com>, engine-devel at ovirt.org,
> > "Simon Grinberg" <sgrinber at redhat.com>, "Saggi
> > Mizrahi" <smizrahi at redhat.com>, "Ori Liel" <oliel at redhat.com>,
> > "Yair Zaslavsky" <yzaslavs at redhat.com>, "Miki
> > Kenneth" <mkenneth at redhat.com>, "Einav Cohen" <ecohen at redhat.com>
> > Sent: Friday, May 11, 2012 10:10:37 AM
> > Subject: Re: [Engine-devel] PosixFS: GUI mock-ups have been updated
> > 
> > 
> > On 05/10/2012 09:46 PM, Ayal Baron wrote:
> > 
> > > device is what is being mounted and in the case of NFS is
> > > server:path
> > >
> > > There is a reason why we termed it PosixFS and not SharedFS and
> > > that users can specify local devices/FS's (and there is no reason
> > > to limit it).
> > >
> > > Note that if user defines a local FS and adds 2 hosts to the
> > > Posix
> > > FS DC then 1 host will be non-op
> > 
> > Why? This makes some very interesting use cases a lot more
> > difficult
> > to
> > set up. We should allow multiple hosts in a PosixFS data center,
> > and
> > it
> > should be the user's responsibility that if he adds multiple hosts,
> > that
> > each of those see the same data.
> 
> 
> I *think* we're saying the same thing.
> If you have multiple hosts in a datacenter with PosixFS then it's
> your responsibility to make sure that they can all see the same
> storage

+1.
I believe that Ayal didn't mean that we should limit the number of Hosts in a PosixFS DC to 1; all he said is that in case the user has defined more than 1 Host in a PosixFS DC and the PosixFS storage domain in it happens to be a local one (i.e. local on one of the Hosts in the DC), all other Hosts will become Non Operational (simply because they won't be able to reach that storage domain).

> 
> 
> > 
> > Regards,
> > Geert
> > 
>