Bug 597118

Summary:	A warning should be given in the help of mke2journal-L for the length of label
Product:	[Community] Virtualization Tools	Reporter:	Yufang Zhang <yuzhang>
Component:	libguestfs	Assignee:	Richard W.M. Jones <rjones>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	low
Version:	unspecified	CC:	mbooth, virt-maint
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:	2011-07-14 19:11:47 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 Yufang Zhang 2010-05-28 07:24:50 UTC

Description of problem:
For the mke2journal-L, label is limited to 16 bytes. So if you set label longer than that length, it will be truncated. Thus the label set may not be as what you expect. So it is better to add some warning in the help of mke2journal-L to let people know this limitation. 

Version-Release number of selected component (if applicable):
major: 1
minor: 2
release: 7
extra: 


How reproducible:
Always

Steps to Reproduce:
1.><fs> mke2journal-L 1024 "1234567890abcdefg" /dev/VG/jounal
  
2.><fs> get-e2label /dev/VG/jounal
1234567890abcdef

  
Actual results:


Expected results:
At least a warning should be given in the help to inform people this limitation.

Additional info:

Comment 1 Yufang Zhang 2010-05-28 08:51:38 UTC

*** Bug 597116 has been marked as a duplicate of this bug. ***

Comment 2 Richard W.M. Jones 2010-06-01 14:41:56 UTC

Confirmed from the Linux sources that the volume name is
limited to 16 bytes, even for ext4.

Comment 3 Richard W.M. Jones 2010-06-01 14:44:56 UTC

Confirmed also that Linux swap labels are 16 bytes long.

Comment 4 Richard W.M. Jones 2010-06-01 15:21:45 UTC

Patch posted upstream:
https://www.redhat.com/archives/libguestfs/2010-June/msg00011.html

Comment 5 Fedora Update System 2010-06-02 21:12:32 UTC

libguestfs-1.2.9-1.el5 has been submitted as an update for Fedora EPEL 5.
http://admin.fedoraproject.org/updates/libguestfs-1.2.9-1.el5

Comment 6 Fedora Update System 2010-06-02 21:26:19 UTC

libguestfs-1.2.9-1.fc13 has been submitted as an update for Fedora 13.
http://admin.fedoraproject.org/updates/libguestfs-1.2.9-1.fc13

Comment 7 Richard W.M. Jones 2010-06-02 21:32:59 UTC

This patch has been pushed upstream.

If this needs to be fixed for RHEL 5 / 6, please clone
this bug and adjust the Product accordingly.

Comment 8 Fedora Update System 2010-06-03 08:49:01 UTC

libguestfs-1.2.9-1.el5.1 has been submitted as an update for Fedora EPEL 5.
http://admin.fedoraproject.org/updates/libguestfs-1.2.9-1.el5.1