On Tue, Jun 12, 2018 at 1:24 PM, Hari Prasanth Loganathan <hariprasanth.l@msystechnologies.com> wrote:
Hi Team,
I use the following API to get the disk statistics as per the oVirt rest API documentation.
http://ovirt.github.io/ovirt-engine-api-model/4.2/#types/disk/links/statisti...
https://172.30.X.X/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d84465...
{ "statistic": [ { "kind": "gauge", "type": "decimal", "unit": "bytes_per_second", "values": { "value": [ { "datum": 0 } ] }, "disk": { "href": "/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d844652e", "id": "f78c8adf-23f9-4f52-a29b-0de3d844652e" }, "name": "data.current.read", "description": "Read data rate", "href": "/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d844652e/statistics/33b9212b-f9cb-3fd0-b364-248fb61e1272", "id": "33b9212b-f9cb-3fd0-b364-248fb61e1272" }, { "kind": "gauge", "type": "decimal", "unit": "bytes_per_second", "values": { "value": [ { "datum": 0 } ] }, "disk": { "href": "/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d844652e", "id": "f78c8adf-23f9-4f52-a29b-0de3d844652e" }, "name": "data.current.write", "description": "Write data rate", "href": "/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d844652e/statistics/2f23addd-4ebd-3d82-a449-c28778bc33eb", "id": "2f23addd-4ebd-3d82-a449-c28778bc33eb" } ] }
Unfortunately, the values are always coming as '0'.
Steps to reproduce :
1) I logged into the VM console and run the following command to copy the file and I see the write rate is 300mb/sec
dd if=/dev/zero of=/dev/null
This command does not access the disk. Perhaps try to read or write to one, then check stats. Best regards,
2) During this time, I am trying to execute this API and receiving as 0 always.
Is this API useless?
Thanks, Hari
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