Re: fsync and semctl errors with 8.1.5/win32

I've gotten pushback from my organization on removing antivirus from the
servers completely. Are there any antiviruses that are known to be
compatible with PostgreSQL/win32?

On Mon, 27 Nov 2006 10:28:23 -0500, "Jeremy Haile" <jhaile(at)fastmail(dot)fm>
said:
> 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(at)sollentuna(dot)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(at)postgresql(dot)org
> > > [mailto:pgsql-bugs-owner(at)postgresql(dot)org] On Behalf Of Jeremy Haile
> > > Sent: den 27 november 2006 15:21
> > > To: pgsql-bugs(at)postgresql(dot)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(at)postgresql(dot)org/msg16097.html
> > > http://www.mail-archive.com/pgsql-bugs(at)postgresql(dot)org/msg14792.html
> > > http://www.mail-archive.com/pgsql-bugs(at)postgresql(dot)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
> > >
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