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Bug 1001490

Summary:	Race contitions in providers. Lack of locking mechanism in providers.
Product:	Red Hat Enterprise Linux 7	Reporter:	Robin Hack <rhack>
Component:	openlmi-providers	Assignee:	Radek Novacek <rnovacek>
Status:	CLOSED NOTABUG	QA Contact:	qe-baseos-daemons
Severity:	high	Docs Contact:
Priority:	high
Version:	7.1	CC:	jsafrane, ovasik, psklenar, sgallagh, tbzatek, tsmetana
Target Milestone:	rc	Keywords:	Tracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-08-29 09:02:34 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1001636
Bug Blocks:	922084

Comment 2 Roman Rakus 2013-08-28 13:10:38 UTC

Marking this as tracking bug.

Comment 4 Jan Safranek 2013-11-01 12:58:50 UTC

There is no concept of 'transactions' and 'locking' in WBEM protocol and in CIM architecture.

We can provide voluntary locking, which is tracked upstream as https://fedorahosted.org/openlmi/ticket/81

Comment 6 Radek Novacek 2014-08-29 09:02:34 UTC

The issue with LMI_Service instances mentioned in comment #0 is fixed in current master in upstream git (the fix will land in 7.1 as the package will be rebased).

But the missing locking mechanism is property of the CIM technologies. There is nothing much we can do in the providers. We could do some voluntary locking mechanism (discussed upstream in https://fedorahosted.org/openlmi/ticket/81) but that has not yet been decided.

For now, I'm closing this bug as NOTABUG, the locking mechanism won't be implemented in the near future. If there is some actual provider breakage in the concurrent access (like that one in comment #0), please fill a new bug.