[ceph-users] rbd IO monitoring

Wido den Hollander wido at 42on.com
Thu Nov 29 21:57:32 PST 2018

On 11/30/18 5:48 AM, Michael Green wrote:
> Hello collective wisdom,
> Ceph neophyte here, running v13.2.2 (mimic).
> Question: what tools are available to monitor IO stats on RBD level?
> That is, IOPS, Throughput, IOs inflight and so on?
> I'm testing with FIO and want to verify independently the IO load on
> each RBD image.

There is no central point in Ceph where all I/O passes, so those
counters can only be found on the client issuing the I/O.

If you enable the admin socket on a librbd client you can use the 'perf
dump' command so see what it's doing.

This is how you enable the socket:


> --
> *Michael Green*
> Customer Support & Integration
> green at e8storage.com <mailto:green at e8storage.com>
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