Bug 883629

Summary:	lvm2 rpm missing dependency on device-mapper-persistent-data (for thin_check, et al)
Product:	Red Hat Enterprise Linux 6	Reporter:	Charles Butterfield <cb20777>
Component:	lvm2	Assignee:	LVM and device-mapper development team <lvm-team>
Status:	CLOSED DUPLICATE	QA Contact:	Cluster QE <mspqa-list>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	6.3	CC:	agk, dwysocha, heinzm, jbrassow, msnitzer, prajnoha, prockai, thornber, zkabelac
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-12-05 11:37:13 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:

Description Charles Butterfield 2012-12-05 02:36:16 UTC

Description of problem: When thin LV are in use, the script /etc/lvm/lvm.conf invokes /usr/sbin/thin_check (in the package device-mapper-persistent-data) which is not pulled in by the rpm/yum dependency mechanism. 


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

lvm2-2.02.95-10.el6_3.2.x86_64
device-mapper-persistent-data-0.1.4-1.el6.x86_64


How reproducible: Totally


Steps to Reproduce:
1. Create thin volume (without installing device-mapper-persisten-data)
2. Reboot
3. Failure to setup thin volumes at boot time (due to missing thin_check)
  
Actual results:


Expected results:


Additional info:

Comment 2 Alasdair Kergon 2012-12-05 03:48:20 UTC

In 6.3, the feature is classed as a Technology Preview https://access.redhat.com/support/offerings/techpreview/ and so we did not want to install this package for everyone by default.

You should also note that if the machine loses power while writing to a thin device, a subsequent thin_check might sometimes fail, and if it does you then need to run the repair manually to tidy up some reference counts after incomplete I/O.  See https://bugzilla.kernel.org/show_bug.cgi?id=48851 for details.  We shall automate the handling of this particular situation in future.

Comment 3 Charles Butterfield 2012-12-05 04:47:25 UTC

Thanks for the heads up!

Comment 4 Alasdair Kergon 2012-12-05 11:37:13 UTC

The dependency is already present in builds for 6.4.

Comment 5 Alasdair Kergon 2012-12-05 11:42:38 UTC


*** This bug has been marked as a duplicate of bug 870248 ***