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: libguestfsAssignee: Richard W.M. Jones <rjones>
Status: CLOSED UPSTREAM QA Contact:
Severity: medium Docs Contact:
Priority: low    
Version: unspecifiedCC: mbooth, virt-maint
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2011-07-14 19:11:47 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

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