[pve-devel] introduce linked disks

[Dietmar Maurer]

> Am 17.12.2012 11:08, schrieb Dietmar Maurer:
> >>> store1:/0/vm-0-disk-1.raw
> >>>
> >>> (owner is VM 0). But I am not sure if that is a good idea.
> >>
> >> The idea is to have entries like this one:
> >> shared_scsi1:vm-117-disk-5
> >> shared_virtio2:vm-117-disk-9
> >>
> >> We don't need the path as the PVE code always rely on the vm-(\d+)
> >> number. So my idea was to do this here too.
> >
> > So how do we detect that a volume is shared? When storage name has
> prefix 'shared_'?
> 
> We have to possibilies:
> 1.) Volume is shared FROM another guest:
> shared_scsi1
> So thisis pretty easy to detect by the shared_ prefix.
> 
> 2.) Volume is shared TO another guest:
> I can imagine to possibilities here:
> - add an option to disk when the disk gets shared by another VM:
> ...,cache=writeback,shared=1
> or
> to loop through all VMs when we need to know this.

That sounds clumsy. What is wrong with my proposal?