On Wed, Jun 17, 2020 at 8:51 PM Christoph Ackermann
<c.ackermann@xxxxxxxxxxxx> wrote:
>
> Hi all,
>
> we have a cluster starting from jewel to octopus nowadays. We would like
> to enable Upmap but unfortunately there are some old Jewel clients
> active. We cannot force Upmap by: ceph osd
> set-require-min-compat-client luminous Because of production state,
> we must not lose any client. ;-)
>
> "client": [
> {
> "features": "0x27018fb86aa42ada",
> "release": "jewel",
> "num": 7
> },
> {
> "features": "0x3f01cfb8ffadffff",
> "release": "luminous",
> "num": 6
> }
>
> The cluster and all clients are v15.2.3 and my assumtion was, that
> Centos7 with kernel 3.10 have backported kernel modules. Am i wrong?
Hi Christoph,
You are right.
>
>
> I also checked Centos7 client with 4.20-ml kernel without success.
> Clients always appear as Jewel clients... Fresh Centos8 run as Luminous
> client as expected.
Reporting as jewel is an unfortunate technical wart, see
http://lists.ceph.com/pipermail/ceph-users-ceph.com/2018-May/027002.html
https://spinics.net/lists/ceph-users/msg55419.html
>
> BTW: Is there a trick to identify Jewel clients by IP address / Hostname?
Eugen's suggestion (mon sessions) is correct, but you shouldn't need
it. Those 0x27018fb86aa42ada clients do support upmap.
Thanks,
Ilya
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