[Engine-devel] Shared disk / Floating disk import/export (was: Re: move disk command)

[Omer Frenkel]

----- Original Message -----
> From: "Ayal Baron" <abaron at redhat.com>
> To: "Maor" <mlipchuk at redhat.com>
> Cc: engine-devel at ovirt.org, "Jon Choate" <jchoate at redhat.com>, "Omer Frenkel" <ofrenkel at redhat.com>
> Sent: Tuesday, January 17, 2012 10:21:29 PM
> Subject: Re: Shared disk / Floating disk import/export (was: Re: [Engine-devel] move disk command)
> 
> 
> 
> ----- Original Message -----
> > On 01/17/2012 11:57 AM, Omer Frenkel wrote:
> > > 
> > > 
> > > ----- Original Message -----
> > >> From: "Ayal Baron" <abaron at redhat.com>
> > >> To: "Omer Frenkel" <ofrenkel at redhat.com>
> > >> Cc: engine-devel at ovirt.org, "Jon Choate" <jchoate at redhat.com>
> > >> Sent: Tuesday, January 17, 2012 10:45:53 AM
> > >> Subject: Shared disk / Floating disk import/export (was: Re:
> > >> [Engine-devel] move disk command)
> > >>
> > >>
> > >> [SNIP]
> > >>
> > >>>>> This may be unrelated, but user would be allowed to export
> > >>>>> and
> > >>>>> import a floating disk, right?
> > >>>>> I would like the ability to import *any* disk in the export
> > >>>>> domain
> > >>>>> as a floating disk, but in the least, export and import disks
> > >>>>> not
> > >>>>> associated with a VM.
> > >>>
> > >>> you are right, it is unrelated, this thread is about move disk
> > >>> of
> > >>> a
> > >>> vm between SDs,
> > >>> export and import is copy, and floating disks is part of the
> > >>> shared
> > >>> disk feature,
> > >>> this indeed need to be discussed in that scope.
> > >>
> > >> Ok, so I've changed the subject, now let's discuss it.
> > >>
> > > 
> > > Adding Maor,
> > > not sure if we have any plan regard export/import of floating
> > > disk,
> > > or in general, exporting disk without it's vm (if I understood
> > > Ayal
> > > correctly)
> > > 
> > > Maor, any comments?
> > I remember, we mentioned export/import issue in our last meeting
> > with
> > Andrew in the context of shared raw disk.
> > It was decided then, that export/import will not be supported by
> > shared
> > raw disk, I'm not sure if we also decided that for floating disk,
> > but I think its a PM decision.
> > 
> > Support import/export domain might evolve to a big change, since if
> > we
> > want to export disk, we might also want to reflect all its
> > configuration
> > and functionality there, also reflect disks which are attached to
> > VMs
> > and templates as well.
> 
> What properties does a disk have?
> Interface is what type of connection is used when plugging the disk
> in the computer (VM) so it's not really a disk property.
> Address is also VM specific
> Description is already stored in storage side.
> What else do you have for disk?

type (system/data..)
post-zero
name(?)
creation-date
last modify date
application-list
volume type and format

> 
> Note that being able to import floating disks means that we'd be able
> to take any data storage domain and import any disk(s) from it
> (assuming user changes domain type to export domain, which users
> already know how to do)
> 
>