in verbose mode, the log shows a little bit more:

2006-10-23 03:23:14 LOG: 42501: could not fsync segment 0 of relation 1663/3964774/6411190: Permission denied
2006-10-23 03:23:14 LOCATION:  mdsync, md.c:785
2006-10-23 03:23:14 ERROR: XX000: storage sync failed on magnetic disk: Permission denied
2006-10-23 03:23:14 LOCATION:  smgrsync, smgr.c:888

- thomas

----- Original Message ----- From: "Thomas H" <[EMAIL PROTECTED]>
To: <pgsql-bugs@postgresql.org>
Sent: Monday, October 23, 2006 1:28 AM
Subject: [BUGS] BUG #2712: could not fsync segment: Permission denied



The following bug has been logged online:

Bug reference:      2712
Logged by:          Thomas H
Email address:      [EMAIL PROTECTED]
PostgreSQL version: 8.2b1
Operating system:   windows 2003 standard
Description:        could not fsync segment: Permission denied
Details:

sometimes we're seeing loads of errors in the log:

2006-10-22 23:48:50 LOG:  could not fsync segment 0 of relation
1663/3964774/6409340: Permission denied
2006-10-22 23:48:50 ERROR: storage sync failed on magnetic disk: Permission
denied
2006-10-22 23:48:51 LOG:  could not fsync segment 0 of relation
1663/3964774/6409340: Permission denied
2006-10-22 23:48:51 ERROR: storage sync failed on magnetic disk: Permission
denied
2006-10-22 23:48:52 LOG:  could not fsync segment 0 of relation
1663/3964774/6409340: Permission denied
2006-10-22 23:48:52 ERROR: storage sync failed on magnetic disk: Permission
denied
2006-10-22 23:48:53 LOG:  could not fsync segment 0 of relation
1663/3964774/6409340: Permission denied
2006-10-22 23:48:53 ERROR: storage sync failed on magnetic disk: Permission
denied
{...}

when this happens, there are also files locked within the data\base\{dbid}\.
access to those files are denied by the os - the files vanish as soon as
postmaster ist stopped & restarted.

i haven't yet found a possible reason - i suspect the error to appear
*sometimes* after issuing a "VACUUM FULL ANALYZE {tablename}" / "REINDEX
TABLE {tablename}".

the hardware is checked and ok.

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