Open Stack

Thanks for the feedback!

Il giorno gio 22 set 2022 alle ore 11:03 Gorka Eguileor <geguileo at redhat.com>
ha scritto:

> On 03/09, Ignazio Cassano wrote:
> > Hello,
> > some updates.
> > The issue appears also using volume group instead of consistency groups.
> > Ignazio
> >
>
> Hi,
>
> Consistency Groups do not work across Cinder backends:
>
> - Backends from different drivers/vendors.
>
> - Backends from different storage arrays in different geographic
>   locations
>
> I don't know if there's a way to make it "work" with generic groups, but
> if it were possible it would probably just loop over the volumes and
> take individual snapshots, as I don't think it's implemented the option
> of having multiple consistency groups (1 per backend) and doing 1
> snapshot request per backend.
>
> Cheers,
> Gorka.
>
> >
> > Il giorno ven 2 set 2022 alle ore 19:06 Ignazio Cassano <
> > ignaziocassano at gmail.com> ha scritto:
> >
> > > Hi everyone, in my openstack installation, for performance reasons, I
> use
> > > a cinder type to address different storage virtual machines on the same
> > > device. Balancing takes place via the scheduler. Below is an example of
> > > my configuration in cinder.conf:
> > >
> > > https://paste.openstack.org/show/b0hCTsdniLhinoQiVT7A/
> > >
> > > As you can see nfsgold1 to nfsgold8 are all part of the volume type
> > > nfsgold.
> > > Unfortunately if I create a consistency group with volume type
> nfsgold, it
> > > can only contain volumes on the same backend, even though they are of
> the
> > > same type. For example, if in my consistency group there is a volume on
> > > nfsgold1 and I add a volume present on nfsgold8 I get the following:
> > >
> > > https://paste.openstack.org/show/b4XnUeGDF5wYlCBLTcuc/
> > >
> > >
> > > Any help, please ?
> > > Ignazio
> > >
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.openstack.org/pipermail/openstack-discuss/attachments/20220922/6c4938f8/attachment.htm>