Would like an explanation of these error messages.

I maintain a warm backup site at a co-location in another city. One
of the things that gets moved there is a copy of the PostgreSQL
backend for our company wiki and project management site. This is a
simple process of dumping the database, rsyncing to the remote site
and restoring. The relevant cron entries look like this:

Source:
--->
pg_dump --create --format=c --user=postgres --verbose hll_redmine
| gzip > /var/data/pas-redmine/db/dump/hll_redmine.pgsql.gz &&
rsync -avz --bwlimit=35 --delete-after --exclude="database.yml"
--exclude="*.log" --exclude="*cache" --exclude="*ruby_sess*"
/var/data/pas-redmine inet03.mississauga.harte-lyne.ca:/var/data
<---

Destination:
--->
gunzip < /var/data/pas-redmine/db/dump/hll_redmine.pgsql.gz |
pg_restore --clean --user=postgres --dbname=hll_redmine ; vacuumdb
--user=postgres --full --analyze hll_redmine
<---

This evidently works reliably.

However, I have noticed these messages in the logwatch files of the
destination host and I would like to have them explained to me. I
would alos like any suggestions as to what I should be doing
differently so as to avoid them altogether.

--->
pg_restore: [archiver (db)] Error while PROCESSING TOC:
pg_restore: [archiver (db)] Error from TOC entry 4; 2615 2200 SCHEMA
public postgres
pg_restore: [archiver (db)] could not execute query: ERROR: cannot
drop schema public because other objects depend on it
HINT: Use DROP ... CASCADE to drop the dependent objects too.
Command was: DROP SCHEMA public;
pg_restore: [archiver (db)] could not execute query: ERROR: schema
"public" already exists
Command was: CREATE SCHEMA public;
WARNING: errors ignored on restore: 2
<---

--
*** E-Mail is NOT a SECURE channel ***
James B. Byrne mailto:ByrneJB(at)Harte-Lyne(dot)ca
Harte & Lyne Limited http://www.harte-lyne.ca
9 Brockley Drive vox: +1 905 561 1241
Hamilton, Ontario fax: +1 905 561 0757
Canada L8E 3C3