Thanks Nathan for your answer, but I set the the Target Ratio to 0.9. It is the cephfs_data pool that makes the troubles. The 4.0 is the BIAS from the cephfs_metadata pool. This "BIAS" is not explained on the page linked below. So I don't know its meaning. How can be a pool overcommited when it is the only pool on a set of OSDs? Best regards, Lars Thu, 24 Oct 2019 09:39:51 -0400 Nathan Fish <lordcirth@xxxxxxxxx> ==> Lars Täuber <taeuber@xxxxxxx> : > The formatting is mangled on my phone, but if I am reading it correctly, > you have set Target Ratio to 4.0. This means you have told the balancer > that this pool will occupy 4x the space of your whole cluster, and to > optimize accordingly. This is naturally a problem. Setting it to 0 will > clear the setting and allow the autobalancer to work. > > On Thu., Oct. 24, 2019, 5:18 a.m. Lars Täuber, <taeuber@xxxxxxx> wrote: > > > 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@xxxxxxx> ==> ceph-users@xxxxxxx : > > > 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@xxxxxxx> ==> ceph-users@xxxxxxx : > > > > 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 > > > > _______________________________________________ > > > > ceph-users mailing list -- ceph-users@xxxxxxx > > > > To unsubscribe send an email to ceph-users-leave@xxxxxxx > > > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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