Bug 588668

Summary: F13: don't probe for RAIDs on CD-ROMs
Product: [Fedora] Fedora Reporter: Karel Zak <kzak>
Component: util-linux-ngAssignee: Karel Zak <kzak>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 13CC: kzak, rvokal
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 588248 Environment:
Last Closed: 2010-06-14 10:15:49 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description Karel Zak 2010-05-04 08:58:23 UTC
+++ This bug was initially created as a clone of Bug #588248 +++

Description of problem:

RAID probing of CD/DVD can yield errors because of well-known problem
in reading the end of the disk with some disk/drive combinations.

More information (upstream):
http://thread.gmane.org/gmane.linux.utilities.util-linux-ng/3114


The problem is not possible to reproduce without the (broken) hardware, but it's possible to check that blkid(8) does not read from last sectors from the probed device. For example

 strace -e read blkid /dev/cdrom

--- Additional comment from kzak@redhat.com on 2010-05-03 05:36:31 EDT ---

Note that you can also use 

  BLKID_DEBUG=0xffff blkid -p -o udev /dev/cdrom

to check that libblkid does not call RAID probing functions. (The -p should be also used tor the previous example with "strace".)

Comment 1 Fedora Update System 2010-05-04 09:17:28 UTC
util-linux-ng-2.17.2-4.fc13 has been submitted as an update for Fedora 13.
http://admin.fedoraproject.org/updates/util-linux-ng-2.17.2-4.fc13

Comment 2 Fedora Update System 2010-05-10 23:52:19 UTC
util-linux-ng-2.17.2-4.fc13 has been pushed to the Fedora 13 stable repository.  If problems still persist, please make note of it in this bug report.