[PVE-User] Bug when removing a VM

[lemonnierk at ulrar.net]

Mounting it read only doesn't allow easy migration between clusters,
which is the goal here. Unless someone knows a better way to migrate a
VM from a cluster to another without more than a few seconds of
downtime, but that's the best I could come up with

On Thu, Jun 21, 2018 at 10:43:53AM +0200, Dietmar Maurer wrote:
> In general, you should never mount storage on different clusters at the same
> time. This is always dangerous - mostly because there is no locking and
> because of VMID conflicts. If you do, mount at least read-only.
> 
> > Not sure this is a bug, but if it's not there should be a huge red
> > warning in the VM removal box, I think.
> > 
> > We've been migrating some VMs between clusters, and for that I mounted
> > the old storage on the new cluster,

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