Bug 449128

Summary:	Renaming volgroup does not rename the mapper link
Product:	[Fedora] Fedora	Reporter:	Chris Cogdon <chris>
Component:	lvm2	Assignee:	Peter Rajnoha <prajnoha>
Status:	CLOSED WONTFIX	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	9	CC:	agk, bmarzins, bmr, dwysocha, mbroz, prajnoha, prockai
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-07-15 08:28:25 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 Chris Cogdon 2008-05-30 16:50:08 UTC

Description of problem:
When renaming a volgroup, the symlink in /dev/VolGroupNN is not also renamed.
Ie, it is possible to have something that says /dev/VolGroup01/LogVol00 ->
/dev/mapper/VolGroup00-LogVol00

A typical occurance of this "rename" is inserting a LVM-enabled drive from one
machine into another. At that point you'll have TWO Volgroups Labelled
VolGroup00. One can be renamed by using the UUID of the VolGroup to distinguish
the two. However, when one mounts the renamed group, you'll get another copy of
the UNrenamed group because of the issue above.

A reboot solves this issue, but this should not be necessary. And, why did linux
not complain when the FS was mounted twice?

Version-Release number of selected component (if applicable):
lvm2-2.02.33-11.fc9.x86_64

How reproducible:
Always


Steps to Reproduce:
1. Create two systems with LVM enabled. Put some special file in BOTH systems so
you can identify them as distinct. Eg: "echo ONE >/id" "echo TWO >/id"
2. Power down both systems and move one drive into the other, so that one system
has both drives
3. Power up that system.
4. Rename one of the volume groups from VolGroup00 to VolGroup01 (for example).
Use UUIDs. Eg: "vgrename FR7cBt-G7P6-KUd0-PM7Z-d08x-9bn2-M1WJiX VolGroup01"
5. Mount the new volume: mkdir /mnt/stuff ; mount /dev/VolGroup
6. Check the ids: "cat /id ; cat /mnt/stuff/id"
7. Check the symlinks: "ls -l /dev/VolGroup??"
  
Actual results:
YOu'll get:

ONE
ONE

indicating that the same drive is mounted twice.

And the result of the "ls" will show that VolGroup01/* still points to
/dev/mapper/VolGroup00-*


Expected results:

ONE
TWO

The "ls" should show that VolGroup01 points to mapper's VolGroup01

Additional info:

Comment 1 Peter Rajnoha 2008-12-19 15:37:59 UTC

The fix has been uploaded to upstream CVS.

Comment 2 Bug Zapper 2009-06-10 01:17:49 UTC

This message is a reminder that Fedora 9 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 9.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '9'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 9's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
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Comment 3 Bug Zapper 2009-07-15 08:28:25 UTC

Fedora 9 changed to end-of-life (EOL) status on 2009-07-10. Fedora 9 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.