Postgresql didn't start after power failure

On Wednesday January 12 2005 1:08, Clodoaldo Pinto wrote:

There was a power failure and then the postgresql service didn't start on
system restart:

The last activity before power failure was a vacuum full and after that
nothing at all for more than one hour.
Is there anyway to know why did it not start and prevent it to happen
again? How to configure it to write a log at system boot?

PostgreSQL has a safety check that prevents it from restarting if it thinks
there may be residual shared memory segments that might cause a problem.
Your server log will tell you how to check (see ipcs).

It is rare in my experience that failed restarts due to the safety check are
valid. You can usually just nuke the pid file and restart after checking
the shmmem segment listings. I believe Tom Lane recently made the safety
check in 8.0 is a lot smarter than prior versions. I vaguely recall he
posted the patch a month or three ago...

Ed

On Wed, 12 Jan 2005 17:08:26 -0300 (ART), Clodoaldo Pinto
<clodoaldo_pinto@yahoo.com.br> wrote:

There was a power failure and then the postgresql service didn't start on
system restart:

System restart after power failure:
Jan 12 16:49:06 s1 syslogd 1.4.1: restart.
Jan 12 16:49:18 s1 su(pam_unix)[2098]: session opened for user postgres by
(uid=0)
Jan 12 16:49:18 s1 su(pam_unix)[2098]: session closed for user postgres
Jan 12 16:49:19 s1 postgresql: Iniciando serviço postgresql : failed

When I manually rebooted the system postgres restarted:
Jan 12 18:40:42 s1 su(pam_unix)[2083]: session opened for user postgres by
(uid=0)
Jan 12 18:40:43 s1 su(pam_unix)[2083]: session closed for user postgres
Jan 12 18:40:44 s1 postgresql: Iniciando serviço postgresql : succeeded

/var/log/pgsql is empty and is chmoded as executable (?). It is an Anaconda
install in FC2. Now up to 7.4.6.

The last activity before power failure was a vacuum full and after that nothing
at all for more than one hour.
Is there anyway to know why did it not start and prevent it to happen again?
How to configure it to write a log at system boot?

So its silently failing without logging anything? Is it configured to
log to /var/log/pgsql in /etc/init.d/postgresql ? Perhaps it left a
stale pid file behind? Did you try running a 'postgresql service
stop' ?

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L. Friedman netllama@gmail.com
LlamaLand http://netllama.linux-sxs.org