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Bug 873764

Summary: [RFE] Monitor and log SD IOPS on the hosts
Product: [oVirt] ovirt-engine-metrics Reporter: Dan Yasny <dyasny>
Component: RFEsAssignee: Shirly Radco <sradco>
Status: CLOSED WONTFIX QA Contact: Lukas Svaty <lsvaty>
Severity: medium Docs Contact:
Priority: medium    
Version: 1.0.0CC: bugs, dfediuck, kcleveng, lpeer, scohen, sradco, ylavi
Target Milestone: ---Keywords: FutureFeature
Target Release: ---Flags: lsvaty: testing_plan_complete-
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-09-02 09:59:00 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Metrics RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 873757, 879590    
Bug Blocks: 880611    

Description Dan Yasny 2012-11-06 16:33:34 UTC 
Description of problem:
873757 talks about gathering IO stats from hosts, we need them displayed in the UI and aggregated in the DWH for reports

Version-Release number of selected component (if applicable):
3.2

How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:

State street requirement
Comment 4 Yaniv Lavi 2016-12-04 14:39:31 UTC 
Moving to DWH to review for addition to new metrics store.
Comment 5 Yaniv Kaul 2017-02-27 12:08:01 UTC 
Yaniv - I doubt there's a way we can aggregate IOPS per SD - it takes quite some processing - is it something we are truly looking to do in 4.2?
Comment 6 Yaniv Lavi 2017-02-27 13:50:13 UTC 
(In reply to Yaniv Kaul from comment #5)
> Yaniv - I doubt there's a way we can aggregate IOPS per SD - it takes quite
> some processing - is it something we are truly looking to do in 4.2?

We can get this from all the hosts using the plugins and accumulate this.
Comment 7 Shirly Radco 2017-06-25 12:02:00 UTC 
After discussing this with Tal, we can get from vdsm the vm disk_read_ops and disk_write_ops should be able to give us aggregates IOPS per host.

According to what I understand from Yaniv Lavi this should be ok for this RFE.
Comment 8 Yaniv Lavi 2017-06-25 14:24:16 UTC 
The disk plugin and NFS plugins in collectd should already have these stats. No need for VDSM use here.
Comment 9 Shirly Radco 2017-06-25 17:49:58 UTC 
(In reply to Yaniv Lavi from comment #8)
> The disk plugin and NFS plugins in collectd should already have these stats.
> No need for VDSM use here.

The data, as I understand, for disk is of local disks and not the SD that libvirt is reporting.
Comment 10 Yaniv Lavi 2017-06-26 15:44:33 UTC 
(In reply to Shirly Radco from comment #9)
> (In reply to Yaniv Lavi from comment #8)
> > The disk plugin and NFS plugins in collectd should already have these stats.
> > No need for VDSM use here.
> 
> The data, as I understand, for disk is of local disks and not the SD that
> libvirt is reporting.

I believe it is per mount point that would include the SDs.
Comment 11 Shirly Radco 2017-10-26 13:18:35 UTC 
Opened a collectd issue https://github.com/collectd/collectd/issues/2509
Comment 12 Doron Fediuck 2018-09-02 09:58:39 UTC 
Closing old issues. 
If needed please reopen and explain why is it needed.