[Bug 1442674] [NEW] sysstat log corruption, time isn't changing

[Dale Harris]

Public bug reported:

I'm seeing some log file corruption in sysstat, the time stamp
occasionally just stops changing. So the output I typically see is like:


# sar

12:00:00 AM     all      0.00      0.00      0.00      0.00      0.00      0.00
12:00:00 AM     all      0.00      0.00      0.00      0.00      0.00      0.00
12:00:00 AM     all      0.00      0.00      0.00      0.00      0.00      0.00
End of system activity file unexpected

Typical output should be something like:

11:58:01 PM     all      0.11      0.00      0.02      0.00      0.00     99.87
11:59:01 PM     all      0.06      0.00      0.02      0.00      0.00     99.92
12:00:01 AM     all      0.03      0.00      0.02      0.00      0.00     99.95
Average:        all      0.10      0.00      0.04      0.00      0.00     99.86


I'm attaching some example logs files, sa09 is good, sa10 is corrupted.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: sysstat 10.2.0-1
ProcVersionSignature: Ubuntu 3.13.0-46.77-generic 3.13.11-ckt15
Uname: Linux 3.13.0-46-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: amd64
Date: Fri Apr 10 14:44:10 2015
SourcePackage: sysstat
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.cron.d.sysstat: 2015-03-25T18:44:29.274292
mtime.conffile..etc.sysstat.sysstat: 2015-03-25T18:44:29.198292

** Affects: sysstat (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

** Attachment added: "Some example sysstat log files, sa09 is good, sa10 is bad"
   https://bugs.launchpad.net/bugs/1442674/+attachment/4371623/+files/sysstat_logs.tgz

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Title:
  sysstat log corruption, time isn't changing

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