Bug 679741 – canonicalize swap devices

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Bug 679741 - canonicalize swap devices

Summary:	canonicalize swap devices

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	util-linux-ng (Show other bugs)
Sub Component:
Version:	6.2
Hardware:	Unspecified Unspecified

Priority	medium Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	Karel Zak
QA Contact:	qe-baseos-daemons
Docs Contact:

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Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2011-02-23 06:51 EST by Karel Zak
Modified:	2011-12-06 12:10 EST (History)
CC List:	4 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
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Story Points:	---
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Environment:
Last Closed:	2011-12-06 12:10:39 EST
Type:	---
Regression:	---
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Documentation:	---
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2011:1691	normal	SHIPPED_LIVE	Low: util-linux-ng security, bug fix, and enhancement update	2011-12-05 20:02:36 EST

Groups: None (edit)

Description Karel Zak 2011-02-23 06:51:54 EST

swapon(8) tries to activate already active swap partition if the swap area is on DM device. Fixed by upstream patch:

commit b98ff23e879826d0b041a18ca1090428748b9ef3
Author: Alexey Gladkov
Date:   Wed Dec 15 02:14:18 2010 +0300

    swapon: Canonicalize swap device
    
    Swapon checks whether a swap device is active by searching for the
    device name in /proc/swaps. /proc/swaps always specifies the path
    to real device file, even if the path to real device file, even
    if symlink was passed to the swapon() system call.
    
    This differs from /proc/mounts semantics where each string contains
    exactly the same device name as it was passed to the mount*() system call.
    
    If a swap partition resides on lvm, libblkid returns a name in
    form /dev/mapper/*, but now there are symlinks pointing to device
    files /dev/dm-*, resulting to /proc/swaps containing /dev/dm-*,
    but swapon still looks for /dev/mapper/* and tries to activate
    the swap partition again.
    
    [kzak@redhat.com: - remove unnecessary changes from
                        is_in_proc_swaps()]
    
    Signed-off-by: Alexey Gladkov
    Tested-by: Petr Uzel
    Signed-off-by: Karel

Comment 6 errata-xmlrpc 2011-12-06 12:10:39 EST

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2011-1691.html

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