Re: Raw disk space used

On Wed, Aug 01, 2007 at 12:34:07PM -0400, Carol Walter wrote:

> I've done as you suggested and I've got the correct directories. I
> have a second question now. There are forty-four numeric entries in
> the directory for the first databases that I looked at. The database
> in question has only eight tables. There are eight tables that have
> recent dates. Do I need the total of all the files or just the eight
> that appear to be the tables that are being updated?

Take the whole directory - there are indexes as well. And large tables
are split up AFAIK.

You may try the following shell script to determine the size of all
databases:

#!/bin/bash
#
# Shell script to determine disk usage of PostgreSQL databases.
# by Tino Schwarze/Community4you

PGDATADIR=/data/pgsql/74
PGPORT=5432
PSQLBIN=/opt/pgsql-7.4.3/bin/psql
PGOPTS="-U postgres"

echo "PostgreSQL 7.4.3 database sizes"
$PSQLBIN $PGOPTS -p $PGPORT -t -F " " -A template1 -c 'select oid,datname from pg_database' | \
while read oid dbname ; do
[ "$dbname" != "template1" ] || continue
[ "$dbname" != "template0" ] || continue
size="`du -sh $PGDATADIR/base/$oid | cut -f 1`"
while [ ${#dbname} -lt 16 ] ; do dbname="$dbname " ; done
printf "$dbname\t%6s\n" $size
done

HTH,

Tino.

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