This question is answered here:
https://ceph.io/rados/new-in-nautilus-pg-merging-and-autotuning/
But it tells me that there is more data stored in the pool than the raw capacity provides
(taking the replication factor RATE into account) hence the RATIO being above 1.0 .
How comes this is the case? - Data is stored outside of the pool?
How comes this is only the case when the autoscaler is active?
Thanks
Lars
Thu, 24 Oct 2019 10:36:52 +0200
Lars Täuber <taeuber(a)bbaw.de> ==> ceph-users(a)ceph.io :
My question requires too complex an answer.
So let me ask a simple question:
What does the SIZE of "osd pool autoscale-status" tell/mean/comes from?
Thanks
Lars
Wed, 23 Oct 2019 14:28:10 +0200
Lars Täuber <taeuber(a)bbaw.de> ==> ceph-users(a)ceph.io :
Hello everybody!
What does this mean?
health: HEALTH_WARN
1 subtrees have overcommitted pool target_size_bytes
1 subtrees have overcommitted pool target_size_ratio
and what does it have to do with the autoscaler?
When I deactivate the autoscaler the warning goes away.
$ ceph osd pool autoscale-status
POOL SIZE TARGET SIZE RATE RAW CAPACITY RATIO TARGET RATIO BIAS
PG_NUM NEW PG_NUM AUTOSCALE
cephfs_metadata 15106M 3.0 2454G 0.0180 0.3000 4.0
256 on
cephfs_data 113.6T 1.5 165.4T 1.0306 0.9000 1.0
512 on
$ ceph health detail
HEALTH_WARN 1 subtrees have overcommitted pool target_size_bytes; 1 subtrees have
overcommitted pool target_size_ratio
POOL_TARGET_SIZE_BYTES_OVERCOMMITTED 1 subtrees have overcommitted pool
target_size_bytes
Pools ['cephfs_data'] overcommit available storage by 1.031x due to
target_size_bytes 0 on pools []
POOL_TARGET_SIZE_RATIO_OVERCOMMITTED 1 subtrees have overcommitted pool
target_size_ratio
Pools ['cephfs_data'] overcommit available storage by 1.031x due to
target_size_ratio 0.900 on pools ['cephfs_data']
Thanks
Lars
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