Bug 164862

Summary:	spinlock deadlock while running mirror I/O
Product:	Red Hat Enterprise Linux 4	Reporter:	Corey Marthaler <cmarthal>
Component:	lvm2	Assignee:	Jonathan Earl Brassow <jbrassow>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.0
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2005-08-02 21:43:39 UTC	Type:	---
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:
Bug Blocks:	145411

Description Corey Marthaler 2005-08-01 23:18:08 UTC

Description of problem:
While testing the fix for 164630, we were able to get around that race
condition, however that made it possible now to see a deadlock which could occur
when running I/O to a mirror. This was because two processes are both waiting on
the same spinlock.

Version-Release number of selected component (if applicable):
[root@link-02 ~]# lvcreate --version
  LVM version:     2.01.13 (2005-07-13)
  Library version: 1.01.03 (2005-06-13)
  Driver version:  4.4.0

*plus patches to fix 164630*

How reproducible:
everytime

Comment 1 Jonathan Earl Brassow 2005-08-02 21:43:39 UTC

This bug cropped up as an artifact of my fix for bug 164630, so it does _not_
currently exist in the kernel