Re: [Xen-devel] [PATCH 0/5] Towards a restartable oxenstored

[Jonathan Davies <jonathan.davies@xxxxxxxxxx>]

On 07/04/17 15:15, Andrew Cooper wrote:
> On 07/04/17 14:27, Jonathan Davies wrote:
> > With these patches, the state saved on exit contains information about
> > inter-domain connections and active watches, and the contents of the
> > store. Some internal state is not currently preserved over a restart:
> >   1. quota usage info
> >   2. partially-read and already-queued packets from rings
> >   3. recent transaction history
> >
> > Items 1 and 2 are probably needed for this to be considered fully
> > functional, so fixes for them should follow. But the bugfixes in this
> > series already represent a worthwhile improvement.
> Shouldn't quota usage be recalculated as part of parsing the stashed
> database?  After all, the database is the canonical state of the world.
> What would you do if the database and the stashed quota differ?
You're right. This would be recalculated when loading the saved state.

I had in mind that there were some quotas of "dynamic" things that 
aren't derived from the contents alone, but I can't spot them in the 
code so must have been imagining them.
So there's no need to dump quota state to disk.

Thanks,
Jonathan

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