Bug 506643

Summary: e2fsprogs libblkid probe_all() can mismatch devices, causing mount failure
Product: Red Hat Enterprise Linux 5 Reporter: Mark Goodwin <mgoodwin>
Component: e2fsprogsAssignee: Eric Sandeen <esandeen>
Status: CLOSED ERRATA QA Contact: BaseOS QE <qe-baseos-auto>
Severity: medium Docs Contact:
Priority: medium    
Version: 5.3CC: bnater, gasmith, sct
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: e2fsprogs-1.39-27.el5 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-07-21 09:05:33 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:
Bug Depends On:    
Bug Blocks: 590060    
Attachments:
Description Flags
fix probe_all() scanning algorithm none

Description Mark Goodwin 2009-06-18 03:45:01 UTC
Created attachment 348373 [details]
fix probe_all() scanning algorithm

Description of problem:
customer has filesystem on a whole device *and* has a device
listed in /proc/partitions that ends in a digit (but it's not a
partition). This is tripping up a bug in libblkid:probe_all() where
it thinks the whole device to be mounted is a partition of the device
listed one line earlier, hence mount fails. This is a bug even though
the customer should be mounting a partition, not a whole device.

Customer's patch is attached. Customer verified (but not yet SEG verified).

Version-Release number of selected component (if applicable):
Probably all versions of e2fsprogs, but specifically reported
against e2fsprogs-1.39-20.el5 in RHEL5.3.

How reproducible:
always

Steps to Reproduce:
1. set up dm-1 or any other device with device name ending in a digit
2. attempt to mount the whole device listed immediately after dm-1
   in /proc/partitions
  
Actual results:
mount fails

Expected results:
mount succeeds

Comment 1 Eric Sandeen 2009-06-18 03:59:15 UTC
Just out of curiosity, what does /proc/partitions look like?

Comment 2 Eric Sandeen 2009-06-18 04:17:04 UTC
Scratch that request, probably not needed.

I think this upstream commit will fix it:

http://git.kernel.org/?p=fs/ext2/e2fsprogs.git;a=commitdiff;h=38361bbbb55735cf0f4ed6d56079c70fb3328036

Can the customer confirm?

Comment 4 Eric Sandeen 2009-06-24 17:42:27 UTC
Ok, this is most likely 5.5 material, without some sort of big push.

Thanks,
-Eric

Comment 6 RHEL Program Management 2009-11-06 18:53:16 UTC
This request was evaluated by Red Hat Product Management for
inclusion, but this component is not scheduled to be updated in
the current Red Hat Enterprise Linux release. If you would like
this request to be reviewed for the next minor release, ask your
support representative to set the next rhel-x.y flag to "?".

Comment 10 RHEL Program Management 2010-08-09 18:50:36 UTC
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated in the
current release, Red Hat is unfortunately unable to address this
request at this time. Red Hat invites you to ask your support
representative to propose this request, if appropriate and relevant,
in the next release of Red Hat Enterprise Linux.

Comment 12 Eric Sandeen 2011-01-28 00:08:43 UTC
Built & tagged in e2fsprogs-1.39-27.el5

Comment 14 errata-xmlrpc 2011-07-21 09:05:33 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 therefore 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-2011-1080.html

Comment 15 errata-xmlrpc 2011-07-21 12:36:06 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 therefore 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-2011-1080.html