I don't have access to a luminous cluster at the moment, but I would try looking in the pg dump first. You could also try the crush map.
Worst case scenario you could set up a bunch of test clients and attempt to connect them to your cluster. You should be able to find which is the oldest version it allows. radosgw, ceph-fuse, or rbd-fuse from a given ceph version should tell you whether or not that version will work (choosing the package depending on what you use your cluster for).
You can also check `ceph features` to see which features your currently connected clients support.
On Fri, Oct 13, 2017 at 4:23 AM Hans van den Bogert <hansbogert@xxxxxxxxx> wrote:
Hi,
I’m in the middle of debugging some incompatibilities with an upgrade of Proxmox which uses Ceph. At this point I’d like to know what my current value is for the min-compat-client setting, which would’ve been set by:
ceph osd set-require-min-compat-client …
AFAIK, there is no direct get-* variant of the above command. Does anybody now how I can retrieve the current setting with perhaps lower level commands/tools ?
Thanks,
Hans
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