2018-03-09 10:27 GMT+01:00 Will Zhao <zhao6305@xxxxxxxxx>:
Hi all:
I have a tiny question. I have read the documents, and it
recommend approximately 100 placement groups for normal usage.
Per OSD. Approximately 100 PGs per OSD, when all used pools are summed up.
For things like radosgw, let it use the low defaults (8?) and then expand on the pools
that actually see a lot of data getting into them, leave the rest as is.
Because the pg num can not be decreased, so if in current cluster,
the pg num have met this rule, and when I try to create a new pool ,
what pg num I should set ? I think no matter what I do , it will
violate the pg-num-rule, add burden to osd. This means , if I want my
cluster be used by many different users, I should bulid a new cluster
for new user ?
and those pools can have separate OSD hosts serving them if you need strong
separation, but still managed from the same cluster.
--
May the most significant bit of your life be positive.
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