David,
I have 15 pools:
# ceph osd lspools|sed 's/,/\n/g'
0 rbd
1 cephfs_data
2 cephfs_metadata
3 vmimages
14 .rgw.root
15 default.rgw.control
16 default.rgw.data.root
17 default.rgw.gc
18 default.rgw.log
19 default.rgw.users.uid
20 default.rgw.users.keys
21 default.rgw.users.email
22 default.rgw.meta
23 default.rgw.buckets.index
24 default.rgw.buckets.data
# ceph -s | grep -Eo '[0-9]+ pgs'
3520 pgs



Brian Andrus
ITACS/Research Computing
Naval Postgraduate School
Monterey, California
voice: 831-656-6238



From: David Turner [mailto:david.tur...@storagecraft.com]
Sent: Thursday, September 22, 2016 8:57 AM
To: Andrus, Brian Contractor <bdand...@nps.edu>; ceph-users@lists.ceph.com
Subject: RE: too many PGs per OSD when pg_num = 256??

Forgot the + for the regex.

ceph -s | grep -Eo '[0-9]+ pgs'
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________________________________
From: David Turner
Sent: Thursday, September 22, 2016 9:53 AM
To: Andrus, Brian Contractor; 
ceph-users@lists.ceph.com<mailto:ceph-users@lists.ceph.com>
Subject: RE: too many PGs per OSD when pg_num = 256??
How many pools do you have?  How many pgs does your total cluster have, not 
just your rbd pool?

ceph osd lspools
ceph -s | grep -Eo '[0-9] pgs'

My guess is that you have other pools with pgs and the cumulative total of pgs 
per osd is too many.
________________________________
From: ceph-users [ceph-users-boun...@lists.ceph.com] on behalf of Andrus, Brian 
Contractor [bdand...@nps.edu]
Sent: Thursday, September 22, 2016 9:33 AM
To: ceph-users@lists.ceph.com<mailto:ceph-users@lists.ceph.com>
Subject: [ceph-users] too many PGs per OSD when pg_num = 256??
All,

I am getting a warning:

     health HEALTH_WARN
            too many PGs per OSD (377 > max 300)
            pool cephfs_data has many more objects per pg than average (too few 
pgs?)

yet, when I check the settings:
# ceph osd pool get rbd pg_num
pg_num: 256
# ceph osd pool get rbd pgp_num
pgp_num: 256

How does something like this happen?
I did create a radosgw several weeks ago and have put a single file in it for 
testing, but that is it. It only started giving the warning a couple days ago.

Brian Andrus
ITACS/Research Computing
Naval Postgraduate School
Monterey, California
voice: 831-656-6238

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