The following bug has been logged online:
Bug reference: 2257
Logged by: Evgeny Gridasov
Email address: eugrid(at)fpm(dot)kubsu(dot)ru
PostgreSQL version: 8.1.2 CVS
Operating system: Linux Debian
Description: Can' stop server while autovacuum is running
Details:
I needed to shutdown my server urgently, but I was unable to stop server by
pg_ctl -m fast.
Examining process list I found out that an autovacuum process is still
active.
autovacuum process (when active) did not respond to kill (TERM). Only kill
-9 helped to stop autovacuum process.