On Wed, Jun 17, 2020 at 8:51 PM Christoph Ackermann
<c.ackermann(a)infoserve.de> 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