Bug 980245

Summary:	Calculated.DiskSpaceUsedPercentage metric in Cassandra plugin reports incorrect value
Product:	[Other] RHQ Project	Reporter:	John Sanda <jsanda>
Component:	Plugins	Assignee:	Stefan Negrea <snegrea>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Mike Foley <mfoley>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	4.8	CC:	ahovsepy, hrupp
Target Milestone:	---
Target Release:	RHQ 4.9
Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	Bug Fix
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Clone Of:		Environment:
Last Closed:	2014-03-25 20:55:37 UTC	Type:	Bug
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Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	951619

Description John Sanda 2013-07-01 20:34:30 UTC

Description of problem:
The Calculated.DiskSpaceUsedPercentage metric in StorageServiceComponent is calculated incorrectly. It is reporting the percentage of the entire file system used whereas it should be reporting the percentage of the file system used by Cassandra's data directories.

The description for Calculated.DiskSpaceUsedPercentage says that it also takes into account the installation path. The metric does not actually do this, nor do I think it should.

StorageServiceComponent does not need to calculate the disk space used by the data directories. We can obtain that value from the Load metric reported by StorageServiceMBean. 

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Comment 1 Stefan Negrea 2013-07-10 19:09:30 UTC

Updated the way this percentage is calculated. It is now based on the overall disk space available for the data file locations rather than just the one with the max utilization. Also, added a new metric for the total space used by Cassandra files.