Hi,
I've been putting together a collectd plugin for ceph - since the old
one's I could find no longer work. I'm gathering data from the mon's
admin socket, merged with a couple of commands I issue through the
rados mon_command interface.
Nothing complicated, but the data has me a little confused
When I run "osd pool stats" I get *two* different sets of metrics that
describe client i/o and recovery i/o. Since the metrics are different
I can't merge them to get a consistent view of what the cluster is
doing as a whole at any given point in time. For example, client i/o
reports in bytes_sec, but the recovery dict is empty and the
recovery_rate is in objects_sec...
i.e.
}, {
"pool_name": "rados-bench-cbt",
"pool_id": 86,
"recovery": {},
"recovery_rate": {
"recovering_objects_per_sec": 3530,
"recovering_bytes_per_sec": 14462655,
"recovering_keys_per_sec": 0,
"num_objects_recovered": 7148,
"num_bytes_recovered": 29278208,
"num_keys_recovered": 0
},
"client_io_rate": {}
This is running Jewel - 10.2.5-37.el7cp
Is this a bug or a 'feature' :)
Cheers,
Paul C
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