Re: fsync and semctl errors with 8.1.5/win32 - Mailing list pgsql-bugs

Thanks Magnus.

I will uninstall the AntiVirus and see if my problems persist.  I have
disabled all other non-essential services, indexing, etc. so I don't
know of anything else that could be causing the problems.  However, in
some of the posts I referred to, the poster indicated that they were not
running antivirus software and still experienced the problems I'm
having.

I'll repost if I do or don't continue to experience problems after
uninstalling the antivirus.

On Mon, 27 Nov 2006 15:58:33 +0100, "Magnus Hagander"
<mha@sollentuna.net> said:
> Per the FAQ, we suggest that you *uninstall* your antivirus. Especially
> if it has firewall-like functionality (like I beleive McAfee does). Just
> disabling the scan does *not* remove the filter drivers and does not
> make the antivirus not affect the database processes. So try this. If
> the problem doesn't go away, look for something else installed that
> might be interfernig with the normal operation of your windows install.
>
> //Magnus
>
> > -----Original Message-----
> > From: pgsql-bugs-owner@postgresql.org
> > [mailto:pgsql-bugs-owner@postgresql.org] On Behalf Of Jeremy Haile
> > Sent: den 27 november 2006 15:21
> > To: pgsql-bugs@postgresql.org
> > Subject: [BUGS] fsync and semctl errors with 8.1.5/win32
> >
> > I've been attempting to run PostgreSQL 8.1.5/win32 on a
> > production deployment, but have started having many problems.
> >  McAfee Antivirus is installed and running, although I've
> > excluded the entire drive where PostgreSQL is installed and
> > where the data is installed.
> >
> > I've received several errors in the past few days/weeks.
> > They fall into three general categories 1) permission denied
> > errors 2) semctl errors 3) fsync errors.  I am not sure how
> > to reproduce these errors locally - they seem to occur at
> > unpredictable intervals.
> >
> > The following posts seem related, although I don't see a
> > resolution for any of the problems listed:
> > http://www.mail-archive.com/pgsql-bugs@postgresql.org/msg16097.html
> > http://www.mail-archive.com/pgsql-bugs@postgresql.org/msg14792.html
> > http://www.mail-archive.com/pgsql-bugs@postgresql.org/msg14916.html
> >
> > I have run PostgreSQL on Linux in the past and not had any
> > problems.  Is the win32 build generally considered stable or
> > unstable for production use?  Any help would be greatly appreciated!
> >
> > 1) PERMISSION DENIED ERROR
> > This error occurred on the same day as the semctl started,
> > but stopped occurring for a few hours before the semctl
> > errors started.
> >
> > The following is an example:
> > 2006-11-25 00:46:04 ERROR:  could not open relation 1663/16404/84855:
> > Permission denied
> > 2006-11-25 00:46:05 ERROR:  could not open relation 1663/16404/84855:
> > Permission denied
> > 2006-11-25 00:46:06 ERROR:  could not open relation 1663/16404/84855:
> > Permission denied
> > 2006-11-25 00:46:07 ERROR:  could not open relation 1663/16404/84855:
> > Permission denied
> > 2006-11-25 00:46:08 ERROR:  could not open relation 1663/16404/84855:
> > Permission denied
> > 2006-11-25 00:46:09 ERROR:  could not open relation 1663/16404/84855:
> > Permission denied
> > 2006-11-25 00:46:10 ERROR:  could not open relation 1663/16404/84855:
> > Permission denied
> > 2006-11-25 00:46:11 ERROR:  could not open relation 1663/16404/84855:
> > Permission denied
> > 2006-11-25 00:46:12 ERROR:  could not open relation 1663/16404/84855:
> > Permission denied
> >
> >
> > 2) SEMCTL ERROR
> > This error occurred over and over one day with the same
> > pattern - several semctl errors, then the unexpected EOF.
> > This resulted in clients being unable to create database
> > connections.  The error occurred overnight and into the next
> > day, and did not disappear  until postgres was restarted.
> >
> > The following is an example:
> > 2006-11-25 22:10:03 FATAL:  semctl(167238064, 15, SETVAL, 0)
> > failed: A non-blocking socket operation could not be
> > completed immediately.
> > 2006-11-25 22:10:03 FATAL:  semctl(167238064, 15, SETVAL, 0)
> > failed: A non-blocking socket operation could not be
> > completed immediately.
> > 2006-11-25 22:10:03 FATAL:  semctl(167238064, 15, SETVAL, 0)
> > failed: A non-blocking socket operation could not be
> > completed immediately.
> > 2006-11-25 22:10:03 FATAL:  semctl(167238064, 15, SETVAL, 0)
> > failed: A non-blocking socket operation could not be
> > completed immediately.
> > 2006-11-25 22:10:03 FATAL:  semctl(167238064, 15, SETVAL, 0)
> > failed: A non-blocking socket operation could not be
> > completed immediately.
> > 2006-11-25 22:10:03 FATAL:  semctl(167238064, 15, SETVAL, 0)
> > failed: A non-blocking socket operation could not be
> > completed immediately.
> > 2006-11-25 22:10:03 FATAL:  semctl(167238064, 15, SETVAL, 0)
> > failed: A non-blocking socket operation could not be
> > completed immediately.
> > 2006-11-25 22:10:03 FATAL:  semctl(167238064, 15, SETVAL, 0)
> > failed: A non-blocking socket operation could not be
> > completed immediately.
> > 2006-11-25 22:10:03 FATAL:  semctl(167238064, 15, SETVAL, 0)
> > failed: A non-blocking socket operation could not be
> > completed immediately.
> > 2006-11-25 22:10:03 FATAL:  semctl(167238064, 15, SETVAL, 0)
> > failed: A non-blocking socket operation could not be
> > completed immediately.
> > 2006-11-25 22:10:03 LOG:  could not receive data from client:
> > No connection could be made because the target machine
> > actively refused it.
> > 2006-11-25 22:10:03 LOG:  unexpected EOF on client connection
> >
> >
> > 3) FSYNC ERROR
> > I've seen this error several times in the past - including today.
> >
> > The following is an example:
> > 2006-11-27 00:00:20 LOG:  autovacuum: processing database
> > "incommDashboard"
> > 2006-11-27 00:00:20 LOG:  could not fsync segment 0 of relation
> > 1663/16404/89952: Permission denied
> > 2006-11-27 00:00:20 ERROR:  storage sync failed on magnetic disk:
> > Permission denied
> > 2006-11-27 00:00:24 LOG:  could not fsync segment 0 of relation
> > 1663/16404/89952: Permission denied
> > 2006-11-27 00:00:24 ERROR:  storage sync failed on magnetic disk:
> > Permission denied
> > 2006-11-27 00:00:26 LOG:  could not fsync segment 0 of relation
> > 1663/16404/89952: Permission denied
> > 2006-11-27 00:00:26 ERROR:  storage sync failed on magnetic disk:
> > Permission denied
> > 2006-11-27 00:00:29 LOG:  could not fsync segment 0 of relation
> > 1663/16404/89952: Permission denied
> > 2006-11-27 00:00:29 ERROR:  storage sync failed on magnetic disk:
> > Permission denied
> > 2006-11-27 00:00:32 LOG:  could not fsync segment 0 of relation
> > 1663/16404/89952: Permission denied
> > 2006-11-27 00:00:32 ERROR:  storage sync failed on magnetic disk:
> > Permission denied
> > 2006-11-27 00:00:42 LOG:  could not fsync segment 0 of relation
> > 1663/16404/89952: Permission denied
> > 2006-11-27 00:00:42 ERROR:  storage sync failed on magnetic disk:
> > Permission denied
> >
> > ---------------------------(end of
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