pgsql: Fix syslogger's rotation disable/re-enable logic. - Mailing list pgsql-committers

From Tom Lane
Subject pgsql: Fix syslogger's rotation disable/re-enable logic.
Date
Msg-id E1SNcZL-0007Kx-4W@gemulon.postgresql.org
Whole thread Raw
List pgsql-committers
Fix syslogger's rotation disable/re-enable logic.

If it fails to open a new log file, the syslogger assumes there's something
wrong with its parameters (such as log_directory), and stops attempting
automatic time-based or size-based log file rotations.  Sending it SIGHUP
is supposed to start that up again.  However, the original coding for that
was really bogus, involving clobbering a couple of GUC variables and hoping
that SIGHUP processing would restore them.  Get rid of that technique in
favor of maintaining a separate flag showing we've turned rotation off.
Per report from Mark Kirkwood.

Also, the syslogger will automatically attempt to create the log_directory
directory if it doesn't exist, but that was only happening at startup.
For consistency and ease of use, it should do the same whenever the value
of log_directory is changed by SIGHUP.

Back-patch to all supported branches.

Branch
------
REL9_0_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/a6708e2571ac6d2d2b1dc4cdae39acb282c0c5a9

Modified Files
--------------
src/backend/postmaster/syslogger.c |   26 ++++++++++++++++++++------
1 files changed, 20 insertions(+), 6 deletions(-)


pgsql-committers by date:

Previous
From: Robert Haas
Date:
Subject: pgsql: Prevent index-only scans from returning wrong answers under Hot
Next
From: Tom Lane
Date:
Subject: pgsql: Fix syslogger's rotation disable/re-enable logic.