Hi, hoping someone could help me get to the bottom of this particular issue I'm 
having.

I have ceph octopus installed using ceph-ansible.

Currently, I have 3 MDS servers running, and one client connected to the active 
MDS. I'm currently storing a very large encrypted container on the CephFS file 
system, 8TB worth, and I'm writing data into it from the client host.

recently I have noticed a severe impact on performance, and the time take to do 
processing on file within the container has increased from 1 minute to 11 
minutes.

in the ceph dashboard, when I take a look at the performance tab on the file 
system page, the Write Ops are increasing exponentially over time.

At the end of April around the 22nd I had 49 write Ops on the performance page 
for the MDS deamons. This is now at 266467 Write Ops and increasing.

Also the client requests have gone from 14 to 67 to 117 and is now at 283

would someone be able to help me make sense of why the performance has 
decreased and what is going on with the client requests and write operations.

Kind regards,

kyle
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