Hi, Our cluster is currently running quincy, and I want to set the minimal client version to luminous, to enable upmap balancer, but when I tried to, I got this: # ceph osd set-require-min-compat-client luminous Error EPERM: cannot set require_min_compat_client to luminous: 2 connected client(s) look like jewel (missing 0x800000000000000); add --yes-i-really-mean-it to do it anyway I think I know the most likely candidate (and I've asked them), but is there a way to find out, the way ceph seems to know? tnx /Simon -- I'm using my gmail.com address, because the gmail.com dmarc policy is "none", some mail servers will reject this (microsoft?) others will instead allow this when I send mail to a mailling list which has not yet been configured to send mail "on behalf of" the sender, but rather do a kind of "forward". The latter situation causes dkim/dmarc failures and the dmarc policy will be applied. see https://wiki.list.org/DEV/DMARC for more details