Hi Janek, There was some documentation added about it here: https://docs.ceph.com/en/pacific/cephfs/health-messages/ There is a description of what it means, and it's tied to an mds configurable. On Mon, Sep 18, 2023 at 10:51 AM Janek Bevendorff < janek.bevendorff@uni-weimar.de> wrote:
Hey all,
Since the upgrade to Ceph 16.2.14, I keep seeing the following warning:
10 client(s) laggy due to laggy OSDs
ceph health detail shows it as:
[WRN] MDS_CLIENTS_LAGGY: 10 client(s) laggy due to laggy OSDs mds.***(mds.3): Client *** is laggy; not evicted because some OSD(s) is/are laggy more of this...
When I restart the client(s) or the affected MDS daemons, the message goes away and then comes back after a while. ceph osd perf does not list any laggy OSDs (a few with 10-60ms ping, but overwhelmingly < 1ms), so I'm on a total loss what this even means.
I have never seen this message before nor was I able to find anything about it. Do you have any idea what this message actually means and how I can get rid of it?
Thanks Janek
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