1:24 p.m.
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
2) During this time, I am trying to execute this API and receiving as 0
always.
Is this API useless?
Thanks,
Hari
8:28 a.m.
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
_______________________________________________
Users mailing list -- users(a)ovirt.org
To unsubscribe send an email to users-leave(a)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/message/7TGIUQ2REOM...
--
Didi
8:45 a.m.
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.
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/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/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
>
> _______________________________________________
> Users mailing list -- users(a)ovirt.org
> To unsubscribe send an email to users-leave(a)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/message/
7TGIUQ2REOMSTJBGD3OPY5RE2KOSSFWM/
>
--
Didi
9:26 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
> >
> > _______________________________________________
> > Users mailing list -- users(a)ovirt.org
> > To unsubscribe send an email to users-leave(a)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/message/7TGIUQ2REOM...
> >
>
>
>
> --
> Didi
--
Didi
9:53 a.m.
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-0de3d...
<https://172.30.60.42/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d...
and the value is received as '0' always *
*where, *
* f78c8adf-23f9-4f52-a29b-0de3d844652e - disk ID attached to that VM*
*Anything wrong? *
*Thanks,*
*Hari *
On Wed, Jun 13, 2018 at 11:56 AM, Yedidyah Bar David <didi(a)redhat.com>
wrote:
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/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/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
>> >
>> > _______________________________________________
>> > Users mailing list -- users(a)ovirt.org
>> > To unsubscribe send an email to users-leave(a)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/message/
7TGIUQ2REOMSTJBGD3OPY5RE2KOSSFWM/
>> >
>>
>>
>>
>> --
>> Didi
>
>
--
Didi
10:24 a.m.
On Wed, Jun 13, 2018 at 9:53 AM, Hari Prasanth Loganathan <
hariprasanth.l(a)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-0de3d...
<https://172.30.60.42/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d...
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 <didi(a)redhat.com>
wrote:
> 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/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/f78c8adf-23f9-4f52-a29b-0de3d844652
> e",
> >> > "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/f78c8adf-23f9-4f52-a29b-0de3d844652
> e",
> >> > "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(a)ovirt.org
> >> > To unsubscribe send an email to users-leave(a)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
10:43 a.m.
Hi Yedidyah,
I tried the read also, same result 0,
On Wed, Jun 13, 2018 at 12:54 PM, Yedidyah Bar David <didi(a)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-0de3d...
>
<https://172.30.60.42/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d...
> 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 <didi(a)redhat.com>
> wrote:
>
>> 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/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(a)ovirt.org
>> >> > To unsubscribe send an email to users-leave(a)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
11:18 a.m.
On Wed, Jun 13, 2018 at 10:43 AM, Hari Prasanth Loganathan <
hariprasanth.l(a)msystechnologies.com> wrote:
Hi Yedidyah,
I tried the read also, same result 0,
You keep reading virtual devices that read only from the kernel/memory...
Please try reading from your disk. It's likely /dev/sda, or you can check
using e.g. 'df /', 'lsblk', etc.
And please check with vmstat/iostat that you see the reads. If you don't,
try until you do. Only then check what oVirt has to say.
Best regards,
On Wed, Jun 13, 2018 at 12:54 PM, Yedidyah Bar David
<didi(a)redhat.com>
wrote:
> On Wed, Jun 13, 2018 at 9:53 AM, Hari Prasanth Loganathan <
> hariprasanth.l(a)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-0de3d...
>>
<https://172.30.60.42/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d...
>> 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 <didi(a)redhat.com>
>> wrote:
>>
>>> 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/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(a)ovirt.org
>>> >> > To unsubscribe send an email to users-leave(a)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
>
--
Didi
12:20 p.m.
Hi Yedidyah,
Could you check the following read with *vmstat* operation, check the
complete image.
On Wed, Jun 13, 2018 at 1:48 PM, Yedidyah Bar David <didi(a)redhat.com> wrote:
On Wed, Jun 13, 2018 at 10:43 AM, Hari Prasanth Loganathan <
hariprasanth.l(a)msystechnologies.com> wrote:
> Hi Yedidyah,
>
> I tried the read also, same result 0,
>
>
>
>
>
You keep reading virtual devices that read only from the kernel/memory...
Please try reading from your disk. It's likely /dev/sda, or you can check
using e.g. 'df /', 'lsblk', etc.
And please check with vmstat/iostat that you see the reads. If you don't,
try until you do. Only then check what oVirt has to say.
Best regards,
> On Wed, Jun 13, 2018 at 12:54 PM, Yedidyah Bar David <didi(a)redhat.com>
> wrote:
>
>> On Wed, Jun 13, 2018 at 9:53 AM, Hari Prasanth Loganathan <
>> hariprasanth.l(a)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-0de3d...
>>>
<https://172.30.60.42/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d...
>>> 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 <didi(a)redhat.com>
>>> wrote:
>>>
>>>> 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/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(a)ovirt.org
>>>> >> > To unsubscribe send an email to users-leave(a)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
>>
>
>
--
Didi
12:33 p.m.
On Wed, Jun 13, 2018 at 12:20 PM, Hari Prasanth Loganathan <
hariprasanth.l(a)msystechnologies.com> wrote:
Hi Yedidyah,
Could you check the following read with *vmstat* operation, check the
complete image.
That's better, but please run them in parallel.
Open two windows, run 'vmstat 1' in one of them, see that you get
close-to-zero
'bi', then run 'dd' in the other, see that 'bi' gets higher, wait
a few
minutes,
then check oVirt metrics.
Thanks and good luck,
On Wed, Jun 13, 2018 at 1:48 PM, Yedidyah Bar David <didi(a)redhat.com>
wrote:
> On Wed, Jun 13, 2018 at 10:43 AM, Hari Prasanth Loganathan <
> hariprasanth.l(a)msystechnologies.com> wrote:
>
>> Hi Yedidyah,
>>
>> I tried the read also, same result 0,
>>
>>
>>
>>
>>
> You keep reading virtual devices that read only from the kernel/memory...
> Please try reading from your disk. It's likely /dev/sda, or you can check
> using e.g. 'df /', 'lsblk', etc.
>
> And please check with vmstat/iostat that you see the reads. If you don't,
> try until you do. Only then check what oVirt has to say.
>
> Best regards,
>
>
>> On Wed, Jun 13, 2018 at 12:54 PM, Yedidyah Bar David <didi(a)redhat.com>
>> wrote:
>>
>>> On Wed, Jun 13, 2018 at 9:53 AM, Hari Prasanth Loganathan <
>>> hariprasanth.l(a)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-0de3d...
>>>>
<https://172.30.60.42/ovirt-engine/api/disks/f78c8adf-23f9-4f52-a29b-0de3d...
>>>> 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
<didi(a)redhat.com>
>>>> wrote:
>>>>
>>>>> 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/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(a)ovirt.org
>>>>> >> > To unsubscribe send an email to users-leave(a)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
>>>
>>
>>
>
>
> --
> Didi
>
--
Didi
2354
days inactive
2355
days old
9 comments
2 participants
participants (2)
-
Hari Prasanth Loganathan -
Yedidyah Bar David