iostat

The iostat module reports metrics for cluster throughpout and IOPS.

Enabling

To determine whether the iostat module is enabled, run the following command:

ceph mgr module ls

To enable the iostat module, run the following command:

ceph mgr module enable iostat

To execute the module, run the following command:

ceph iostat

To change the frequency at which the statistics are printed, use the -p option:

ceph iostat -p <period in seconds>

For example, use the following command to print the statistics every 5 seconds:

ceph iostat -p 5

To stop the module, press Ctrl-C.

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