On 10/08/2018 05:04 PM, Aleksei Zakharov wrote:
> Hi all,
> 
> We've upgraded our cluster from jewel to luminous and re-created monitors 
> using rocksdb.
> Now we see, that mon's are using a lot of disk space and used space only 
> grows. It is about 17GB for now. It was ~13GB when we used leveldb and jewel 
> release.
> 
> When we added new osd's we saw that it downloads from monitors a lot of data. 
> It was ~15GiB few days ago and it is ~18GiB today.
> One of the osd's we created uses filestore and it looks like old osd maps are 
> not removed:
> 
> ~# find /var/lib/ceph/osd/ceph-224/current/meta/ | wc -l
> 73590
> 
> I've tried to run manual compaction (ceph tell mon.NUM compact) but it 
> doesn't help.
> 
> So, how to stop this growth of data on monitors?
> 

What is the status of Ceph? Can you post the output of:

$ ceph -s

MONs do not trim their database if one or more PGs aren't active+clean.

Wido

> -- 
> Regards,
> Aleksei Zakharov
> 
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