[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:
https://ceph.com/geen-categorie/ceph-validate-that-the-rbd-cache-is-active/

Wido

> --
> *Michael Green*
> Customer Support & Integration
> green at e8storage.com <mailto:green at e8storage.com>
> 
> 
> _______________________________________________
> ceph-users mailing list
> ceph-users at lists.ceph.com
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> 


More information about the ceph-users mailing list