using jboss with ident auth

Hi,

I'm trying to use postgres with ident auth and jboss.

here's my postgres files:

pg_hba.conf:

# TYPE DATABASE USER CIDR-ADDRESS METHOD

# "local" is for Unix domain socket connections only
local all all ident map=vmap
# IPv4 local connections:
host all all 127.0.0.1/32 ident map=vmap
# IPv6 local connections:
host all all ::1/128 ident map=vmap

pg_ident.conf:

# MAPNAME SYSTEM-USERNAME PG-USERNAME
vmap postgres postgres
vmap root postgres

i've set the postres password to 'postgres' and updated the postres-ds.xml
file under jboss:

<datasources>
<local-tx-datasource>
<jndi-name>DataSource</jndi-name>

<connection-url>jdbc:postgresql://localhost:5432/dbname</connection-url>
<driver-class>org.postgresql.Driver</driver-class>
<user-name>postgres</user-name>
<password>postgres</password>
<max-pool-size>100</max-pool-size>
<check-valid-connection-sql>select
1</check-valid-connection-sql>
</local-tx-datasource>
</datasources>

when i try to run any command that uses the xml file for auth, it failes
with:

FATAL: Ident authentication failed for user "postgres"

when i use 'password' or 'md5' it works.

btw, i would have used password or md5 if there was a away to run psql
commands with password unattended (without password prompt..).

any ideas?

thanks!!