Bug 838451

Summary:	udev is throwing " rename(/dev/disk/by-id/wwn-xxx.udev-tmp, /dev/disk/by-id/wwn-xxx) failed: No such file or directory" out
Product:	Red Hat Enterprise Linux 6	Reporter:	mjin <mjin>
Component:	udev	Assignee:	Harald Hoyer <harald>
Status:	CLOSED ERRATA	QA Contact:	qe-baseos-daemons
Severity:	high	Docs Contact:
Priority:	high
Version:	6.1	CC:	azelinka, harald, jwest, kvolny, rnelson, tlavigne, wili
Target Milestone:	rc
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-02-21 10:29:10 UTC	Type:	Bug
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:	895654

Description mjin 2012-07-09 07:12:54 UTC

Description of problem:

With multipath, all the different paths for a device trigger the same by-uuid rule.  It tries to make the uuid symlink for every path, but only the first one succeeds.  The others fail with File exists.

Jun 22 16:33:50 redhat02 udevd-work[59824]: symlink(../../sdd, /dev/disk/by-id/scsi-350002ac000091534.udev-tmp) failed: File exists
Jun 22 16:33:50 redhat02 udevd-work[59824]: symlink(../../sdd, /dev/disk/by-id/wwn-0x50002ac000091534.udev-tmp) failed: File exists
Jun 22 16:34:22 redhat02 udevd-work[59844]: symlink(../../sdw, /dev/disk/by-id/wwn-0x50002ac000101534.udev-tmp) failed: File exists
Jun 22 16:36:50 redhat02 udevd-work[59799]: rename(/dev/disk/by-id/wwn-0x50002ac000091534.udev-tmp, /dev/disk/by-id/wwn-0x50002ac000091534) failed: No such file or directory
Jun 22 16:37:31 redhat02 udevd-work[13160]: rename(/dev/disk/by-id/scsi-350002ac0000d1534.udev-tmp, /dev/disk/by-id/scsi-350002ac0000d1534) failed: No such file or directory
Jun 22 16:37:31 redhat02 udevd-work[13160]: rename(/dev/disk/by-id/wwn-0x50002ac0000d1534.udev-tmp, /dev/disk/by-id/wwn-0x50002ac0000d1534) failed: No such file or directory
Jun 22 16:38:14 redhat02 udevd-work[59791]: symlink(../../sdx, /dev/disk/by-id/wwn-0x50002ac000101534.udev-tmp) failed: File exists
Jun 22 16:39:22 redhat02 udevd-work[59850]: rename(/dev/disk/by-id/scsi-350002ac0000d1534.udev-tmp, /dev/disk/by-id/scsi-350002ac0000d1534) failed: No such file or directory
Jun 22 16:39:38 redhat02 udevd-work[59824]: rename(/dev/disk/by-id/scsi-350002ac0000f1534.udev-tmp, /dev/disk/by-id/scsi-350002ac0000f1534) failed: No such file or directory
Jun 22 16:40:10 redhat02 udevd-work[59857]: symlink(../../sdp, /dev/disk/by-id/wwn-0x50002ac0000d1534.udev-tmp) failed: File exists
Jun 22 16:40:46 redhat02 udevd-work[59817]: rename(/dev/disk/by-id/scsi-350002ac0000f1534.udev-tmp, /dev/disk/by-id/scsi-350002ac0000f1534) failed: No such file or directory
Jun 22 16:41:23 redhat02 udevd-work[59791]: symlink(../../sdt, /dev/disk/by-id/scsi-350002ac0000f1534.udev-tmp) failed: File exists
Jun 22 16:43:44 redhat02 udevd-work[13166]: symlink(../../sdt, /dev/disk/by-id/scsi-350002ac0000f1534.udev-tmp) failed: File exists
Jun 22 16:44:43 redhat02 udevd-work[13166]: symlink(../../sdw, /dev/disk/by-id/wwn-0x50002ac000101534.udev-tmp) failed: File exists
Jun 22 16:46:59 redhat02 udevd-work[59791]: symlink(../../sdd, /dev/disk/by-id/scsi-350002ac000091534.udev-tmp) failed: File exists
Jun 22 16:47:26 redhat02 udevd-work[59869]: symlink(../../sdag, /dev/disk/by-id/scsi-350002ac000101534.udev-tmp) failed: File exists
Jun 22 16:47:26 redhat02 udevd-work[59869]: rename(/dev/disk/by-id/wwn-0x50002ac000101534.udev-tmp, /dev/disk/by-id/wwn-0x50002ac000101534) failed: No such file or directory
Jun 22 16:47:50 redhat02 udevd-work[59824]: rename(/dev/disk/by-id/scsi-350002ac0000f1534.udev-tmp, /dev/disk/by-id/scsi-350002ac0000f1534) failed: No such file or directory
Jun 22 16:48:33 redhat02 udevd-work[59791]: rename(/dev/disk/by-id/wwn-0x50002ac0000f1534.udev-tmp, /dev/disk/by-id/wwn-0x50002ac0000f1534) failed: No such file or directory
Jun 22 16:49:35 redhat02 udevd-work[59817]: rename(/dev/disk/by-id/wwn-0x50002ac000101534.udev-tmp, /dev/disk/by-id/wwn-0x50002ac000101534) failed: No such file or directory
Jun 22 16:51:07 redhat02 udevd-work[59792]: symlink(../../sdt, /dev/disk/by-id/wwn-0x50002ac0000f1534.udev-tmp) failed: File exists
Jun 22 16:51:26 redhat02 udevd-work[59884]: rename(/dev/disk/by-id/scsi-350002ac000101534.udev-tmp, /dev/disk/by-id/scsi-350002ac000101534) failed: No such file or directory
Jun 22 16:51:40 redhat02 udevd-work[59869]: rename(/dev/disk/by-id/scsi-350002ac0000f1534.udev-tmp, /dev/disk/by-id/scsi-350002ac0000f1534) failed: No such file or directory
Jun 22 16:52:50 redhat02 udevd-work[59817]: symlink(../../sdp, /dev/disk/by-id/scsi-350002ac0000d1534.udev-tmp) failed: File exists
Jun 22 16:53:44 redhat02 udevd-work[13166]: symlink(../../sdm, /dev/disk/by-id/scsi-350002ac0000d1534.udev-tmp) failed: File exists
Jun 22 16:54:03 redhat02 udevd-work[59792]: symlink(../../sdx, /dev/disk/by-id/scsi-350002ac000101534.udev-tmp) failed: File exists
Jun 22 16:54:33 redhat02 udevd-work[13166]: rename(/dev/disk/by-id/scsi-350002ac000101534.udev-tmp, /dev/disk/by-id/scsi-350002ac000101534) failed: No such file or directory

Version-Release number of selected component (if applicable):
2.6.32-131.0.15.el6.x86_64
libgudev1-devel-147-2.35.el6.x86_64
udev-147-2.35.el6.x86_64
libudev-147-2.35.el6.x86_64
libgudev1-147-2.35.el6.x86_64
python-gudev-147.1-4.el6_0.1.x86_64
libudev-devel-147-2.35.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1.
2.
3.
  
Actual results:
server is throwing failed messages

Expected results:
server should not throwing any message 

Additional info:

Comment 2 Harald Hoyer 2012-07-09 14:17:55 UTC

did you turn on debug or did you strace?

Comment 3 Harald Hoyer 2012-07-09 14:24:11 UTC

ah, sorry.. I see, it's a real error message... Seems to be a race.

Comment 4 mjin 2012-07-12 01:29:39 UTC

customer wants to know the progress of this bug, so i am changing view right from Red Hat Employee (internal) -> ALL, 

Please correct me if something wrong with such action,

Comment 5 Harald Hoyer 2012-07-12 08:47:36 UTC

(In reply to comment #4)
> customer wants to know the progress of this bug, so i am changing view right
> from Red Hat Employee (internal) -> ALL, 
> 
> Please correct me if something wrong with such action,

no problem

We have a solution, which basically circumvents the error message, but not the outcome.

Comment 6 Kay Sievers 2012-07-12 12:09:37 UTC

> (In reply to comment #4)
> > customer wants to know the progress of this bug

As Harald said, the "fix" is to suppress the message of racing events
fighting about the same symlink name. It's nothing udev could work
around or solve.

There will be no change in behaviour, besides that it is not logged any more.

Comment 13 errata-xmlrpc 2013-02-21 10:29:10 UTC

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/RHBA-2013-0435.html