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Re: postgres 9.0 date aberration in logs

From: Matheus de Oliveira <matioli(dot)matheus(at)gmail(dot)com>
To: Greg Williamson <gwilliamson39(at)yahoo(dot)com>
Cc: "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>
Subject: Re: postgres 9.0 date aberration in logs
Date: 2012-02-07 18:59:29
Message-ID: CAJghg4KRhB+LH6p_5x1yTANOG=uabxNu6y6Oo3_i-7gjDUOUbw@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-admin
To me seems that it just appended the data to your log. To avoid this set
the log_truncate_on_rotation to on, but notice that it will replace the old
logs.


--
Matheus de Oliveira

Bacharelado em Ciências de Computação
Laboratório de Computação de Alto Desempenho -
LCAD<http://www.lcad.icmc.usp.br/>
Instituto de Ciências Matemáticas e de Computação -
ICMC<http://www.icmc.usp.br/>
Universidade de São Paulo - USP <http://www.sc.usp.br/>




On Tue, Feb 7, 2012 at 4:43 PM, Greg Williamson <gwilliamson39(at)yahoo(dot)com>wrote:

> The server seems to have written the wrong date for the first 45 minutes
> or so of Tuesday before switching in mid-stream:
> <...>
> 2012-01-31 23:58:05 PST [13586]: [29677-1] LOG:  checkpoint starting: time
> 2012-01-31 23:58:08 PST [13586]: [29678-1] LOG:  checkpoint complete:
> wrote 16 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0
> recycled; write=3.008 s, sync=
> 0.001 s, total=3.010 s
> 2012-02-07 00:00:41 PST [30535]: [333-1] LOG:  checkpoint starting: time
> 2012-02-07 00:00:42 PST [30535]: [334-1] LOG:  checkpoint complete: wrote
> 9 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0 recycled;
> write=1.603 s, sync=0.0
> 01 s, total=1.605 s
> <...>
>
> No editing -- honest !
>
> This is what the log dates look like:
> ls -ltr  /var/log/pg_log9.0
> total 8652
> -rw------- 1 postgres postgres 1729857 Feb  1 23:59 postgresql-Wed.log
> -rw------- 1 postgres postgres  930974 Feb  2 23:57 postgresql-Thu.log
> -rw------- 1 postgres postgres  441021 Feb  3 23:57 postgresql-Fri.log
> -rw------- 1 postgres postgres 1041907 Feb  4 23:57 postgresql-Sat.log
> -rw------- 1 postgres postgres 1546812 Feb  5 23:58 postgresql-Sun.log
> -rw------- 1 postgres postgres 1180910 Feb  6 23:55 postgresql-Mon.log
> -rw------- 1 postgres postgres 1943900 Feb  7 10:40 postgresql-Tue.log
>
>
> This is the end of Monday's log:
> -bash-3.2$ tail /var/log/pg_log9.0/postgresql-Mon.log
> 2012-02-06 23:35:41 PST [30535]: [323-1] LOG:  checkpoint starting: time
> 2012-02-06 23:35:42 PST [30535]: [324-1] LOG:  checkpoint complete: wrote
> 10 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0 recycled;
> write=1.804 s, sync=0.001 s, total=1.807 s
> 2012-02-06 23:40:41 PST [30535]: [325-1] LOG:  checkpoint starting: time
> 2012-02-06 23:40:42 PST [30535]: [326-1] LOG:  checkpoint complete: wrote
> 10 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0 recycled;
> write=1.802 s, sync=0.001 s, total=1.805 s
> 2012-02-06 23:45:41 PST [30535]: [327-1] LOG:  checkpoint starting: time
> 2012-02-06 23:45:43 PST [30535]: [328-1] LOG:  checkpoint complete: wrote
> 11 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0 recycled;
> write=2.002 s, sync=0.001 s, total=2.005 s
> 2012-02-06 23:50:41 PST [30535]: [329-1] LOG:  checkpoint starting: time
> 2012-02-06 23:50:42 PST [30535]: [330-1] LOG:  checkpoint complete: wrote
> 6 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0 recycled;
> write=1.007 s, sync=0.000 s, total=1.009 s
> 2012-02-06 23:55:41 PST [30535]: [331-1] LOG:  checkpoint starting: time
> 2012-02-06 23:55:42 PST [30535]: [332-1] LOG:  checkpoint complete: wrote
> 10 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0 recycled;
> write=1.805 s, sync=0.001 s, total=1.807 s
>
>
> And the start of Tuesday's:
> head  /var/log/pg_log9.0/postgresql-Tue.log
> 2012-01-31 00:03:53 PST [13586]: [29091-1] LOG:  checkpoint starting: time
> 2012-01-31 00:03:54 PST [13586]: [29092-1] LOG:  checkpoint complete:
> wrote 9 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0
> recycled; write=1.602 s, sync=0.001 s, total=1.604 s
> 2012-01-31 00:04:45 PST [6186]: [36-1] LOG:  duration: 1831.813 ms
>  execute fetch from S_2/C_3: select<...>
>
>
> The system log doesn't show anything hinky:
> ess /var/log/messages
>
> <...>
> Feb  6 23:56:56 sf1ddb001 puppet-agent[28309]: Finished catalog run in
> 10.51 seconds
> Feb  7 00:15:53 sf1ddb001 xinetd[6141]: START: amanda pid=17175
> from=192.168.50.89
> Feb  7 00:16:05 sf1ddb001 xinetd[6141]: EXIT: amanda status=0 pid=17175
> duration=12(sec)
> Feb  7 00:18:37 sf1ddb001 xinetd[6141]: START: amanda pid=17507
> from=192.168.50.89
> Feb  7 00:18:37 sf1ddb001 xinetd[6141]: EXIT: amanda status=0 pid=17507
> duration=0(sec)
> Feb  7 00:18:55 sf1ddb001 xinetd[6141]: START: amanda pid=17776
> from=192.168.50.89
> Feb  7 00:18:55 sf1ddb001 xinetd[6141]: EXIT: amanda status=0 pid=17776
> duration=0(sec)
> Feb  7 00:19:10 sf1ddb001 xinetd[6141]: START: amanda pid=17859
> from=192.168.50.89
> Feb  7 00:19:10 sf1ddb001 xinetd[6141]: EXIT: amanda status=0 pid=17859
> duration=0(sec)
> Feb  7 00:19:26 sf1ddb001 xinetd[6141]: START: amanda pid=17880
> from=192.168.50.89
> Feb  7 00:19:26 sf1ddb001 xinetd[6141]: EXIT: amanda status=0 pid=17880
> duration=0(sec)
> Feb  7 00:19:55 sf1ddb001 xinetd[6141]: START: amanda pid=17922
> from=192.168.50.89
> Feb  7 00:20:02 sf1ddb001 xinetd[6141]: EXIT: amanda status=0 pid=17922
> duration=7(sec)
> Feb  7 00:27:12 sf1ddb001 puppet-agent[28309]: Finished catalog run in
> 10.36 seconds
> Feb  7 00:57:27 sf1ddb001 puppet-agent[28309]: Finished catalog run in
> 10.16 seconds
> Feb  7 01:27:43 sf1ddb001 puppet-agent[28309]: Finished catalog run in
> 10.86 seconds
> Feb  7 01:57:59 sf1ddb001 puppet-agent[28309]: Finished catalog run in
> 10.48 seconds
> <...>
>
> Has anyone ever seen anything like this ?
>
> Thanks for any suggestions, advice, etc.
>
> Greg WIlliamson
> DBA
> Powerreviews
>
>
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Subject: Re: postgres 9.0 date aberration in logs
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