[Engine-devel] VM disks

[Michael Kublin]

----- Original Message -----
> From: "Oved Ourfalli" <ovedo at redhat.com>
> To: "Livnat Peer" <lpeer at redhat.com>
> Cc: engine-devel at ovirt.org
> Sent: Sunday, February 19, 2012 9:48:31 AM
> Subject: Re: [Engine-devel] VM disks
> 
> 
> 
> ----- Original Message -----
> > From: "Livnat Peer" <lpeer at redhat.com>
> > To: engine-devel at ovirt.org
> > Sent: Saturday, February 18, 2012 7:07:01 PM
> > Subject: [Engine-devel] VM disks
> > 
> > Hi,
> > 
> > These days we are working on various features around VM disks, in
> > the
> > different threads it was decided that we'll have the ability to
> > attach a
> > disk to a VM but it will be added as inactive, then the user can
> > activate it for it to be accessible from within the guest.
> > 
> > Flow of adding a new disk would be:
> > - creating the disk
> > - attaching the disk to the VM
> > - activating it
These should be in a one step, otherwise the clients (rest and gui) will need to pool us 
for every disk 
> > Flow of adding a shared disk (or any other existing disk):
> > - attach the disk
> > - activate it
These is just simple as a hot plug , should be and it is easy implement as one step
> > It seems to me a lot like adding a storage domain and I remember a
> > lot
> > of rejections on the storage domain flow (mostly about it being too
> > cumbersome).
> > After discussing the issue with various people we could not find a
> > good
> > reason for having a VM disk in attached but inactive mode.
> > 
> > Of course we can wrap the above steps in one step for specific
> > flows
Agreed, should be in one step
> > (add+attach within a VM context for example) but can anyone think
> > on
> > a
> > good reason to support attached but inactive disk?
I don't see a reason also.

> > I would suggest that when attaching a disk to a VM it becomes part
> > of
> > the VM (active) like in 'real' machines.
> > 
> +1 on that (regardless of whether the disk is shared or not).
> IMO - in the case of shared disk we should make it as clear as
> possible to the user/admin that the added disk is shared, but the
> flow should be exactly the same.
Also agreed
> 
> > 
> > Thank you, Livnat
> > _______________________________________________
> > Engine-devel mailing list
> > Engine-devel at ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/engine-devel
> > 
> _______________________________________________
> Engine-devel mailing list
> Engine-devel at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/engine-devel
>