GNU bug report logs - #30649
shepherd services with #:log-file overwrite their log file

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: ludo <at> gnu.org (Ludovic Courtès)
Cc: tracker <at> debbugs.gnu.org
Subject: bug#30649: closed (shepherd services with #:log-file overwrite
 their log file)
Date: Fri, 02 Mar 2018 13:01:02 +0000

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Your message dated Fri, 02 Mar 2018 00:47:55 +0100
with message-id <87606ehbtq.fsf <at> gnu.org>
and subject line Re: bug#30649: Cuirass service does not rotate its logs
has caused the debbugs.gnu.org bug report #30649,
regarding shepherd services with #:log-file overwrite their log file
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
30649: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=30649
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Contact help-debbugs <at> gnu.org with problems

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From: Andreas Enge <andreas <at> enge.fr>
To: bug-guix <at> gnu.org
Subject: Cuirass service does not rotate its logs
Date: Wed, 28 Feb 2018 15:50:39 +0100

Hello,

while testing the cuirass service on bayfront, I see the following:

$ ll /var/log/c*
-rw-r--r-- 1 root root 2003521 Feb 28 15:38 /var/log/cuirass.log

I am sure this 2MB file was about 14MB big this morning, and indeed
any information dating from before this morning, when I rebooted the
machine and thus restarted the service, has gone.

Notice also that there are no numbered files cuirass.log.1 etc..

Andreas

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From: ludo <at> gnu.org (Ludovic Courtès)
To: Andreas Enge <andreas <at> enge.fr>
Cc: 30649-done <at> debbugs.gnu.org
Subject: Re: bug#30649: Cuirass service does not rotate its logs
Date: Fri, 02 Mar 2018 00:47:55 +0100

Andreas Enge <andreas <at> enge.fr> skribis:

> On Thu, Mar 01, 2018 at 05:35:54PM +0100, Ludovic Courtès wrote:
>> The cuirass service in GuixSD explicitly extends rottlog so that this
>> file is rotated on a weekly basis.  Perhaps you just need to wait a
>> little longer?
>
> The problem is not that the file grows too large.
>
> The problem was that after rebooting the server, the file was *replaced*
> with newly written content. Maybe the problem is not rotation, but opening
> a file in "write" instead of "append" mode...

Oh indeed, that’s a different thing.

This is fixed by Shepherd commit
7b4c88bac70f0bad82ef70fd5b682a49bc227478, thanks!

Ludo’.

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