Parsing log files for test results

Marc Tardif marc.tardif at
Tue Dec 6 16:49:26 UTC 2011

* Colin Ian King <colin.king at> [2011-12-06 16:40 +0000]:
> On 05/12/11 22:29, Marc Tardif wrote:
> >After a user has been running a proposed kernel for a couple days, I would
> >like to parse the logs of the system to detect what parts of the kernel
> >might have been tested implicitly during that period. These results could
> >then be uploaded to Launchpad, with the consent of the user of course,
> >without having to actually run tests manually. [1]
> >
> >First, I would like to consider suspending. I looked in /var/log/syslog
> >where I found strings that could be parsed to detect a successful wakeup
> >from suspend:
> >
> >   kernel: [  137.402845] ACPI: Waking up from system sleep state S3
> >
> >However, the problem is that syslog does not seem to contain the kernel
> >version to validate that the proposed kernel is effectively being tested.
> >
> >So, I then discovered /var/log/pm-suspend.log which contained both the
> >kernel version and the result of resuming from suspend:
> >
> >   Linux 200910-4253 3.0.0-12-generic #20-Ubuntu SMP Fri Oct...
> >   [snip]
> >   /var/lib/pm-utils/sleep.d/00kernel-change resume suspend: success.
> >
> >Second, I would also like to consider the same for hibernating. I looked
> >at /var/log/pm-suspend.log which also seemed to contain the result of
> >thawing from hibernate:
> >
> >   /var/lib/pm-utils/sleep.d/000kernel-change thaw hibernate: success.
> >
> >Would you say that these are reliable ways to detect that suspend and
> >hibernate were successful?
> >
> >1.
> >
> This kind of S3 success detection has implemented in fwts. I refer
> you to the git
> repo: git:// and the relevant source:
>     src/acpi/s3/s3.c  - see s3_check_log()
>     src/lib/src/fwts_hwinfo.c - see fwts_hwinfo_get() and
> fwts_hwinfo_lists_differ()
>     src/lib/src/fwts_klog.c and data/klog.json (containing >160
> regexs to scan the kernel log)

After looking at the code, I only noticed checking for S3 failure rather
than S3 success. The distinction is not strictly pedantic but rather to
make sure I understand correctly: s3_check_log and the patterns in
klog.json only really check if something went wrong, right?

Marc Tardif <marc.tardif at>
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