Re: upmap supported in SLES 12SPx

[Oliver Freyermuth <freyermuth@xxxxxxxxxxxxxxxxxx>]

Am 16.09.19 um 11:06 schrieb Konstantin Shalygin:
> On 9/16/19 3:59 PM, Thomas wrote:
> > I tried to run this command with failure:
> > root@ld3955:/mnt/rbd# ceph osd set-require-min-compat-client luminous
> > Error EPERM: cannot set require_min_compat_client to luminous: 6
> > connected client(s) look like jewel (missing 0xa00000000200000); 19
> > connected client(s) look like jewel (missing 0x800000000000000); 23
> > connected client(s) look like jewel (missing 0x800000000000000); add
> > --yes-i-really-mean-it to do it anyway
> >
> > root@ld3955:/mnt/rbd# ceph features
> > {
> >      "mon": [
> >          {
> >              "features": "0x3ffddff8ffacffff",
> >              "release": "luminous",
> >              "num": 3
> >          }
> >      ],
> >      "mds": [
> >          {
> >              "features": "0x3ffddff8ffacffff",
> >              "release": "luminous",
> >              "num": 2
> >          }
> >      ],
> >      "osd": [
> >          {
> >              "features": "0x3ffddff8ffacffff",
> >              "release": "luminous",
> >              "num": 368
> >          }
> >      ],
> >      "client": [
> >          {
> >              "features": "0x40106b84a842a42",
> >              "release": "jewel",
> >              "num": 6
> >          },
> >          {
> >              "features": "0x27018eb84aa42a52",
> >              "release": "jewel",
> >              "num": 19
> >          },
> >          {
> >              "features": "0x27018fb86aa42ada",
> >              "release": "jewel",
> >              "num": 23
> >          },
> >          {
> >              "features": "0x3ffddff8ffacffff",
> >              "release": "luminous",
> >              "num": 35
> >          }
> >      ],
> >      "mgr": [
> >          {
> >              "features": "0x3ffddff8ffacffff",
> >              "release": "luminous",
> >              "num": 3
> >          }
> >      ]
> > }
> >
> > But I think the number of clients older than Luminous is incorrect.
> >
> > I'm running 98% of the clients with SLES 12SPx, and therefore the
> > question is:
> > Can you confirm in which SLES 12 release the function upmap is supported?
> > And is it safe to execute ceph osd set-require-min-compat-client
> > luminous --yes-i-really-mean-it? What happens to the clients then?
>
> Your kernel should be 4.13+ to be upmap compat. Then you should tell `--yes-i-really-mean-it` to apply changes.

SLES 12 is still on 3.12 I think. However, the question is probably rather:
Does SUSE backport things such as pg-upmap to older Kernels, such as RedHat does?

Cheers,
	Oliver

> k
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