Hi Manuel, this behavior was primarily updated in Nautilus by https://github.com/ceph/ceph/pull/19454 Per-pool stats under "POOLS" section are now the most precise means to answer various questions about space utilization. 'STORED" column provides net amount of data for a specific pool. You can use "ceph df detail --format json|json-pretty" to obtain a report in json format for further processing../. Hope this helps, Igor On 8/27/2020 12:02 PM, Manuel Lausch wrote:

Hi

we found a very ugly issue in rados df

I have several clusters, all running ceph nautilus (14.2.11), We have there replicated pools with replica size 4.

On the older clusters "rados df" shows in the used column the net used space. On our new cluster, rados df shows in the used column the gross used space.

The older clusters was upgraded from luminous (and before) and uses filestore and the new cluster is initally deployed with nautilus and bluestore.

why are the outputs different? Is this related with nautilus or with bluestore? For our reporting this values have a significant relevance and now I am running in such discrepancies.

What commands/metrics can I use to get more reliable values. Maybe "ceph df detail"?

Manuel _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io