Hello all, I have a weird behavior on my Cephfs. On May 29th I noticed a drop of 50Tb in my data pool. It has been followed by a decrease of space usage in the metadata pool since then. From May 29th, still happening as I write, the metadata pool has lost 1Tb over the initial 1.8Tb. Regarding the number of objects, it was 8.4 Million and is now 7.8 Million. I assume that my users have deleted a lot a of files on that day (our cephfs consists a very small files of about 4Mb). But such a huge decrease in metadata pool got me really concerned, it really seems huge. I thought that maybe it was the mds lazy deletion happening but I am not sure. Does anyone have any thought about this ? Do you know more about lazy deletion ? There is not much documentation about this online. Do you know any way, command, logfile to search in order to get the current lazy deletion operations ? I noticed that the read_ops, read_bytes, write_ops and write_bytes reported by the command rados df detail are negative for the metadata pool. My cluster is running Nautilus. Any help would be appreciated, Best regards, Nate