[libvirt] [PATCH v2 7/7] qemu_security: Lock metadata while relabelling

[Daniel P. Berrangé]

On Fri, Aug 24, 2018 at 03:29:24PM +0200, Michal Privoznik wrote:
> On 08/24/2018 02:53 PM, Daniel P. Berrangé wrote:
> 
> > 
> > That sounds reasonable, so we don't need the _WAIT behaviour in
> > virtlockd itself, as everything will wait in the secdriver instead.
> > At least for now, until we modularize the startup process with the
> > shim. Guess that's just one more todo item to solve for the shim
> > so not the end of the world.
> 
> Hold on, we do need _WAIT so that we mutually exclude other virtlockd-s
> from other hosts fiddling with seclabels on a shared NFS. However, we
> will not deadlock on a single host, that's what I'm saying.

Right but later when multiple clients are permitted to connect to the
same virtlockd, the API they will use has a designed in deadlock :-(

Regards,
Daniel
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