Hi Yedidyah, I tried the read also, same result 0,
On Wed, Jun 13, 2018 at 12:54 PM, Yedidyah Bar David <d...@redhat.com> wrote: > On Wed, Jun 13, 2018 at 9:53 AM, Hari Prasanth Loganathan <hariprasanth.l@ > msystechnologies.com> wrote: > >> Hi Yedidyah, >> >> >> *I tried running the 'dd if=/dev/zero of=/root/hari/test' and I received >> the following output in VM oVirt console and meanwhile I checked this API >> https://172.30.60.42/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d844652e/statistics >> <https://172.30.60.42/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d844652e/statistics> >> and the value is received as '0' always * >> >> >> *where, * >> * f78c8adf-23f9-4f52-a29b-0de3d844652e - disk ID attached to that VM* >> >> >> >> >> >> *Anything wrong? * >> > > You only wrote 300 MB, are you sure it was enough to cause an actual write > (and not cached)? > > Did you check vmstat/iostat? > > Perhaps try reading instead of writing. > > dd if=/dev/somedev of=/dev/null > > >> >> *Thanks,* >> >> *Hari * >> >> >> >> >> >> >> On Wed, Jun 13, 2018 at 11:56 AM, Yedidyah Bar David <d...@redhat.com> >> wrote: >> >>> On Wed, Jun 13, 2018 at 8:45 AM, Hari Prasanth Loganathan >>> <hariprasant...@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 <d...@redhat.com> >>> > wrote: >>> >> >>> >> On Tue, Jun 12, 2018 at 1:24 PM, Hari Prasanth Loganathan >>> >> <hariprasant...@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/dis >>> k/links/statistics >>> >> > >>> >> > >>> >> > >>> >> > https://172.30.X.X/ovirt-engine/api/disks/f78c8adf-23f9-4f52 >>> -a29b-0de3d844652e/statistics >>> >> > >>> >> > >>> >> > { >>> >> > "statistic": [ >>> >> > { >>> >> > "kind": "gauge", >>> >> > "type": "decimal", >>> >> > "unit": "bytes_per_second", >>> >> > "values": { >>> >> > "value": [ >>> >> > { >>> >> > "datum": 0 >>> >> > } >>> >> > ] >>> >> > }, >>> >> > "disk": { >>> >> > "href": "/ovirt-engine/api/disks/f78c8 >>> adf-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-0de3d844652 >>> e/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/f78c8 >>> adf-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-0de3d844652 >>> e/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 >>> >> > >>> >> > _______________________________________________ >>> >> > Users mailing list -- users@ovirt.org >>> >> > To unsubscribe send an email to users-le...@ovirt.org >>> >> > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ >>> >> > oVirt Code of Conduct: >>> >> > https://www.ovirt.org/community/about/community-guidelines/ >>> >> > List Archives: >>> >> > >>> >> > https://lists.ovirt.org/archives/list/users@ovirt.org/messag >>> e/7TGIUQ2REOMSTJBGD3OPY5RE2KOSSFWM/ >>> >> > >>> >> >>> >> >>> >> >>> >> -- >>> >> Didi >>> > >>> > >>> >>> >>> >>> -- >>> Didi >>> >> >> > > > -- > Didi >
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