2:26 a.m.
On Wed, Jun 13, 2018 at 8:45 AM, Hari Prasanth Loganathan
<hariprasanth.l(a)msystechnologies.com> wrote:
Hi Yedidyah,
Thanks for your response. I also tried creating the file, writing some
content to the VM guest console. Still, I didn't see any increase in the
values, It is always 0.
Not sure I understand. "Creating the file" - which one?
Perhaps try something like:
dd if=/dev/zero of=/root/myfile1
In any case, please test that the OS sees your IO. Use e.g. vmstat, iostat
or something like that. oVirt (and metrics) will only show what the OS
reports - if you see there '0', that's what you should get in metrics.
Best regards,
On Wed, Jun 13, 2018 at 10:58 AM, Yedidyah Bar David <didi(a)redhat.com>
wrote:
>
> On Tue, Jun 12, 2018 at 1:24 PM, Hari Prasanth Loganathan
> <hariprasanth.l(a)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/stati...
> >
> >
> >
> >
https://172.30.X.X/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d84...
> >
> >
> > {
> > "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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> >
>
>
>
> --
> Didi
--
Didi