Sosreport Hangs Oracle VM Server After Upgrade to 3.4.4

(Doc ID 2324926.1)

Last updated on NOVEMBER 08, 2017

Applies to:

Oracle VM - Version 3.4.4 to 3.4.4 [Release OVM34]
Linux x86-64

Symptoms

After upgrading an Oracle VM server to 3.4.4, running sosreport hangs while processing the ovm3 plugin.

Example:

[root@test ~]# sosreport

sosreport (version 3.2)

This command will collect diagnostic and configuration information from
this Oracle Linux system and installed applications.

An archive containing the collected information will be generated in
/tmp/sos.KThLnW and may be provided to a Oracle USA support
representative.

Any information provided to Oracle USA will be treated in accordance
with the published support policies at:

http://linux.oracle.com/

The generated archive may contain data considered sensitive and its
content should be reviewed by the originating organization before being
passed to any third party.

No changes will be made to system configuration.

Press ENTER to continue, or CTRL-C to quit.

Please enter your first initial and last name [ovm1005]:
Please enter the case id that you are generating this report for:

Setting up archive ...
Setting up plugins ...
Running plugins. Please wait ...

Running 52/76: ovm3...                      <<<<<-----Here the servers hang.

 

 

The server hangs for around 30 minutes and then recovers

It is possible to see soft lockup errors in the /var/log/messages file and in the console of the Oracle VM Sever:

Message from syslogd@devovm01 at Nov 2 16:53:50 ...
kernel:BUG: soft lockup - CPU#12 stuck for 22s! [blkid:6228]

Message from syslogd@devovm01 at Nov 2 16:54:18 ...
kernel:BUG: soft lockup - CPU#12 stuck for 22s! [blkid:6228]

 

 

This is affected package is the default installed with 3.4.4:

vmpinfo3-sosreport-1.0.0-17.el6.2.noarch

[root@OVS3441 ~]# rpm -qa|grep -i vmpinfo
vmpinfo3-sosreport-1.0.0-17.el6.2.noarch
[root@OVS3441 ~]#

 

 

 

Note: The issue may or may not be present in your environment, a lot of variables can play here to produce or not the issue.

 

Changes

 Upgrade the Oracle VM Servers to 3.4.4

Cause

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