Description of problem:
It appears that ceilometer is not supporting the disk latency and disk iops metrics from libvirt. These metrics should have been added to the libvirt stats according to Bug 715019
Ceilometer is supporting these metrics for Hyper-V according to upstream documentation.
disks.iops and disks.latency are Hyper-V specific and aggregated metrics will be deprecated in the future. The libvirt equivalent can be computed with disk.device.read.request/disk.device.write.requests, and disk.device.read.latency/disk.device.write.latency.
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