[Cinder][nova] queens backup

Ignazio Cassano ignaziocassano at gmail.com
Wed Jan 23 17:02:56 UTC 2019

Manu thanks.
I read a blueprint for providing quiesce function to nova api but I cannot
find it.
Must I talk directly with libvirt api?

Il giorno Mer 23 Gen 2019 17:01 Sean McGinnis <sean.mcginnis at gmx.com> ha

> On Wed, Jan 23, 2019 at 04:56:24PM +0100, Ignazio Cassano wrote:
> > Hello, I did not understand if you mean cinder snapshot pr netapp
> snapshot.
> > Any case, why, we do not need to quiesce the instance ?
> > Regards
> > Ignazio
> >
> If being crash consistent is good enough for your needs, then you don't. I
> know
> some do prefer the coordinated quiescing of IO in the instance to make
> sure any
> in-flight transactions are flushed out and application data is more likely
> to
> be in a good consistent state.
> Depending on your application running in the instance, things like
> databases
> are pretty good at rolling back incomplete transactions, so it's just a
> matter
> of whether you can allow the possibility that something that was
> successful in
> the milliseconds before the snap was created to now be rolled back when the
> application restarts.
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