My idea is that if delete_on_termination flag is set to False the Volume should never be deleted by Nova.
my 2 cents Saverio 2018-03-14 15:10 GMT+01:00 Tim Bell <tim.b...@cern.ch>: > Matt, > > To add another scenario and make things even more difficult (sorry (), if the > original volume has snapshots, I don't think you can delete it. > > Tim > > > -----Original Message----- > From: Matt Riedemann <mriede...@gmail.com> > Reply-To: "OpenStack Development Mailing List (not for usage questions)" > <openstack-...@lists.openstack.org> > Date: Wednesday, 14 March 2018 at 14:55 > To: "openstack-...@lists.openstack.org" <openstack-...@lists.openstack.org>, > openstack-operators <openstack-operators@lists.openstack.org> > Subject: Re: [openstack-dev] [nova] about rebuild instance booted from volume > > On 3/14/2018 3:42 AM, 李杰 wrote: > > > > This is the spec about rebuild a instance booted from > > volume.In the spec,there is a > > question about if we should delete the old root_volume.Anyone who > > is interested in > > booted from volume can help to review this. Any suggestion is > > welcome.Thank you! > > The link is here. > > Re:the rebuild spec:https://review.openstack.org/#/c/532407/ > > Copying the operators list and giving some more context. > > This spec is proposing to add support for rebuild with a new image for > volume-backed servers, which today is just a 400 failure in the API > since the compute doesn't support that scenario. > > With the proposed solution, the backing root volume would be deleted and > a new volume would be created from the new image, similar to how boot > from volume works. > > The question raised in the spec is whether or not nova should delete the > root volume even if its delete_on_termination flag is set to False. The > semantics get a bit weird here since that flag was not meant for this > scenario, it's meant to be used when deleting the server to which the > volume is attached. Rebuilding a server is not deleting it, but we would > need to replace the root volume, so what do we do with the volume we're > replacing? > > Do we say that delete_on_termination only applies to deleting a server > and not rebuild and therefore nova can delete the root volume during a > rebuild? > > If we don't delete the volume during rebuild, we could end up leaving a > lot of volumes lying around that the user then has to clean up, > otherwise they'll eventually go over quota. > > We need user (and operator) feedback on this issue and what they would > expect to happen. > > -- > > Thanks, > > Matt > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > > _______________________________________________ > OpenStack-operators mailing list > OpenStack-operators@lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators _______________________________________________ OpenStack-operators mailing list OpenStack-operators@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
