You can live-migrate VMs to a server with upgraded Ceph libraries; anything
that restarts the underlying qemu process will be enough

Paul

-- 
Paul Emmerich

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On Tue, Jun 18, 2019 at 7:34 AM Pardhiv Karri <[email protected]> wrote:

> Hi,
>
> What is the easiest and fastest way to upgrade Ceph clients which are
> Openstack instances. We have a lot of Openstack Instances and rebooting
> them will take a lot of time as we need to communicate with the end users.
> Is there any other way like restarting a cinder service to get those
> clients to the luminous version 12.2.11 that the cluster is on? Unable to
> use Ceph upmap feature because of that as the older clients are using
> Hammer version.
>
> Current Ceph Features Output:
> {
>     "mon": {
>         "group": {
>             "features": "0x3ffddff8eeacfffb",
>             "release": "luminous",
>             "num": 3
>         }
>     },
>     "osd": {
>         "group": {
>             "features": "0x3ffddff8eeacfffb",
>             "release": "luminous",
>             "num": 619
>         }
>     },
>     "client": {
>         "group": {
>             "features": "0x81dff8eeacfffb",
>             "release": "hammer",
>             "num": 3316
>         },
>         "group": {
>             "features": "0x3ffddff8eeacfffb",
>             "release": "luminous",
>             "num": 2990
>         }
>     }
> }
>
> --
> *Pardhiv Karri*
>
>
>
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