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Bug 1250200

Summary: gunziped message log is tailed
Product: Red Hat Enterprise Linux 7 Reporter: Jack Waterworth <jwaterwo>
Component: sosAssignee: Pavel Moravec <pmoravec>
Status: CLOSED ERRATA QA Contact: Jakub Heger <jheger>
Severity: high Docs Contact:
Priority: unspecified    
Version: 7.1CC: agk, bmr, bubrown, cww, dkutalek, gavin, jheger, jhouska, mhradile, pcaruana, plambri, sbradley
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
URL: https://github.com/sosreport/sos/issues/907
Whiteboard:
Fixed In Version: sos-3.5-1.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-04-10 18:00:19 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: 1203710, 1295396, 1298112, 1420851, 1464262, 1473612    

Description Jack Waterworth 2015-08-04 17:53:18 UTC 
Description of problem:
sosreport from customer contains a gunzip file that has been tailed.

Version-Release number of selected component (if applicable):

sos-3.2-15.el7_1.5.noarch
Red Hat Enterprise Linux Server release 7.1 (Maipo)

How reproducible:
unknown

Steps to Reproduce:
1. run sosreport

Actual results:

--------------------
$ ll var/log/messages*
-rwxrwxrwx 1 jwaterwo jwaterwo      733 Jul 22 10:51 var/log/messages
-rwxrwxrwx 1 jwaterwo jwaterwo 16058057 Apr 19 02:17 var/log/messages-20150419
-rwxrwxrwx 1 jwaterwo jwaterwo 60401880 Apr 27 02:40 var/log/messages-20150427
-rwxrwxrwx 1 jwaterwo jwaterwo 42692864 May  3 02:19 var/log/messages-20150503
lrwxrwxrwx 1 jwaterwo jwaterwo       58 May 10 02:30 var/log/messages-20150510.gz -> ../../sos_strings/logs/var.log.messages-20150510.gz.tailed
--------------------
$ file sos_strings/logs/var.log.messages-20150510.gz.tailed 
sos_strings/logs/var.log.messages-20150510.gz.tailed: empty
--------------------


Expected results:
file should either be gunzipped then tailed, or not tailed at all
Comment 2 Pavel Moravec 2015-08-05 07:28:21 UTC 
Reproducer:

1) Create bigger logfile (content doesnt matter):

# ll /var/log/messages-20150701.gz
-rw-r--r--. 1 root root 2825972 Aug  5 09:17 /var/log/messages-20150701.gz
#

2) 
sosreport -o logs -e logs --batch --log-size=1 --build
..
sosreport build tree is located at : /var/tmp/sosreport-pmoravec-sat61-rhel7.gsslab.brq.redhat.com-20150805091835
..

3)
# cd /var/tmp/sosreport-pmoravec-sat61-rhel7.gsslab.brq.redhat.com-20150805091835
# file var/log/messages-20150701.gz
var/log/messages-20150701.gz: symbolic link to `../../sos_strings/logs/var.log.messages-20150701.gz.tailed'
# file sos_strings/logs/var.log.messages-20150701.gz.tailed
sos_strings/logs/var.log.messages-20150701.gz.tailed: empty

4) sos_logs/sos.log having:

2015-08-05 09:18:35,271 INFO: [plugin:logs] collecting string '...^CP^H^NnJ B^@^N^D^UOA)'5.WJ^E"' as 'var.log.messages-20150701.gz.tailed'
Comment 4 Pavel Moravec 2015-11-04 07:11:25 UTC 
Scope of RHEL7.2 is closed. Re-scheduling to RHEL7.3.
Comment 6 Pavel Moravec 2016-12-28 13:04:14 UTC 
This is works different in sos 3.3. At least I can reproduce on sos-3.2-35.el7_2.3.noarch but differently on sos-3.3-5.el7_3.noarch :

# rpm -qa | grep sos
sos-3.2-35.el7_2.3.noarch
# sosreport -o logs -e logs --batch --log-size=1 --build
..
# file /var/tmp/$(ls -tr /var/tmp/ | grep sosreport | tail -n1)/sos_strings/logs/var.log.messages-20161212.gz.tailed 
/var/tmp/sosreport-pmoravec-rhel72.gsslab.brq.redhat.com-20161228135738/sos_strings/logs/var.log.messages-20161212.gz.tailed: empty
#
#
# yum upgrade sos -y
..
Updated:
  sos.noarch 0:3.3-5.el7_3                                                                                                                                                                    

Complete!
# sosreport -o logs -e logs --batch --log-size=1 --build
..
# file /var/tmp/$(ls -tr /var/tmp/ | grep sosreport | tail -n1)/sos_strings/logs/var.log.messages-20161212.gz.tailed 
/var/tmp/sosreport-pmoravec-rhel72.gsslab.brq.redhat.com-20161228135851/sos_strings/logs/var.log.messages-20161212.gz.tailed: data
# zcat /var/tmp/sosreport-pmoravec-rhel72.gsslab.brq.redhat.com-20161228135851/sos_strings/logs/var.log.messages-20161212.gz.tailed

gzip: /var/tmp/sosreport-pmoravec-rhel72.gsslab.brq.redhat.com-20161228135851/sos_strings/logs/var.log.messages-20161212.gz.tailed: not in gzip format
#



I.e. originally we were collecting empty file. Now we collect tail of gz file, i.e. damaged archive.
Comment 8 Pavel Moravec 2017-11-02 15:14:50 UTC 
Fixed via sos 3.5 rebase.
Comment 15 errata-xmlrpc 2018-04-10 18:00:19 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.

https://access.redhat.com/errata/RHEA-2018:0963