Re: Problems understanding 'ceph features' output

[Massimo Sgaravatto <massimo.sgaravatto@xxxxxxxxx>]

Thanks for your answer

Actually I have the very same configuration on the three "client hosts": on each of them I simply mapped a single rbd volume ...

Cheers, Massimo

2017-12-15 11:10 GMT+01:00 Burkhard Linke <Burkhard.Linke@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>:

Hi,


On 12/15/2017 10:56 AM, Massimo Sgaravatto wrote:

Hi

I tried the jewel --> luminous update on a small testbed composed by:

- 3 mon + mgr nodes
- 3 osd nodes (4 OSDs per each of this node)
- 3 clients (each client maps a single volume)

*snipsnap*

[*]
    "client": {
        "group": {
            "features": "0x40106b84a842a52",
            "release": "jewel",
            "num": 3
        },
        "group": {
            "features": "0x1ffddff8eea4fffb",
            "release": "luminous",
            "num": 5
        }

AFAIK "client" does not refer to a host, but to the application running on the host. If you have several qemu+rbd based VMs running on a host, each VM with be considered an individual client.

So I assume there are 3 ceph applications (e.g. three VMs) on the jewel host, and 5 applications on the two luminous hosts.

Regards,
Burkhard
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