Bug 211516

Summary:	kernel dm: memory issues cause "failures" when creating many snapshots
Product:	Red Hat Enterprise Linux 5	Reporter:	Corey Marthaler <cmarthal>
Component:	kernel	Assignee:	Milan Broz <mbroz>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5.0	CC:	agk, dwysocha, pvrabec
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	RHBA-2007-0959	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-11-07 19:13:58 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:

Description Corey Marthaler 2006-10-19 19:42:09 UTC

Description of problem:
This is a RHEL5 dup of bz 174834.

I reproduced this issue while attempting to create 32 snapshots.

Version-Release number of selected component (if applicable):
Linux taft-04 2.6.18-1.2726.el5 #1 SMP Wed Oct 11 18:53:39 EDT 2006 x86_64
x86_64 x86_64 GNU/Linux
[root@taft-04 ~]# rpm -q lvm2
lvm2-2.02.12-2.el5
[root@taft-04 ~]# rpm -q device-mapper
device-mapper-1.02.12-2.el5

Comment 1 Milan Broz 2006-10-20 07:58:14 UTC

This will be solved by new dm-io implementation, unfortunately there were some
design changes last days and patches are not stable yet. So first possible
include for RHEL 5.1.

Comment 2 RHEL Program Management 2007-03-21 23:47:12 UTC

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.

Comment 7 Don Zickus 2007-05-09 18:16:55 UTC

in 2.6.18-18.el5

Comment 8 Corey Marthaler 2007-06-04 21:46:06 UTC

fix verified in 2.6.18-18.el5, created 100 snapshots w/o issue.

Comment 9 Don Zickus 2007-07-13 16:21:20 UTC

changing back to MODIFIED for the errata tool.
QE note comment #8, this bz has already been verified

Comment 13 errata-xmlrpc 2007-11-07 19:13:58 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2007-0959.html