If your Ceph cluster are running on the latest version of Ceph then the the pg_autoscaler probably is the reason. After the period of time, Ceph will check the cluster status and increase/decrease the number of PG in the cluster if needed.
On 5/14/20, 03:37, "Bryan Henderson" <bryanh@xxxxxxxxxxxxxxxx> wrote:
I'm surprised I couldn't find this explained anywhere (I did look), but ...
What is the pgmap and why does it get updated every few seconds on a tiny
cluster that's mostly idle?
I do know what a placement group (PG) is and that when documentation talks
about placement group maps, it is talking about something else -- mapping of
PGs to OSDs by CRUSH and OSD maps.
--
Bryan Henderson San Jose, California
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