[Cinder][nova] queens backup

Ignazio Cassano ignaziocassano at gmail.com
Wed Jan 23 15:56:24 UTC 2019

Hello, I did not understand if you mean cinder snapshot pr netapp snapshot.
Any case, why, we do not need to quiesce the instance ?

Il giorno mer 23 gen 2019 alle ore 16:49 Sean McGinnis <
sean.mcginnis at gmx.com> ha scritto:

> >
> > Although it wouldn't help making a consistent snapshot of an instance
> > with multiple disks, for a single disk it shouldn't matter if the
> > guest is quiesced as long as the backend can make an instantaneous
> > snapshot. I'm pretty sure many (most?) backends would support that;
> > certainly plain old LVM does. Does cinder use this functionality where
> > it's available, and would that solve the problem you're trying to
> > address?
> >
> > Matt
> >
> That is a good point. If you snap all of the volumes used, it may not be
> quiesced and have all IO flushed, but it would at least be a crash
> consistent
> set of data.
> All of the volumes used by a VM would need to be added to a group:
> https://docs.openstack.org/cinder/latest/admin/blockstorage-groups.html
> You would then be able to create a group snapshot to have all volumes
> snapped
> together.
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