I recently installed openWRT on an WL500g Deluxe.
I followed the tutorials to install an usb key. It worked fine . The usb key is placed at location /opt.
Additionally, I reserved 25 M of the usb key to a linux swap partition and activated it by modifying the proposed /etc/init.d/S11mount script as follows :

#!/bin/sh
# Which device needs to be mounted?
MOUNT_DEVICE0=/dev/scsi/host0/bus0/target0/lun0/part1

i=0
# Wait 15s, mount when ready, and continue if it dosnt get ready within 15s
while [ $i -le 15 ]
  do
  if [ -e $MOUNT_DEVICE0 ]
  then
    mount $MOUNT_DEVICE0 /opt/
    echo "Success: $MOUNT_DEVICE0"
    # JLM 10-01-2006 swapon
    swapon /dev/scsi/host0/bus0/target0/lun0/part5
    exit 0
  fi
  sleep 1
  i=`expr $i + 1`
done

And it works.

But, I have a problem when installing new packages to /opt : when I try to install packages through :
  ipkg -d opt install <name of package>
all element are installed in a new directory /opt/opt. Example for libs : /opt/opt/lib and not as expected /opt/lib.

can you help me and tell me what is wrong ?
 

After having make several tries yesterday evening, I think I understood my mistake. Please correct me, if I am wrong.

The package I targetted to installed are already "compiled" for an installation in the directory "/opt". I saw this when looking at the package contents on the site : http://ipkgfind.nslu2-linux.org/ (it is the samba 3.0xxx package). I didn't know this.
Having the instruction "dest opt /opt" in the ipkg.conf file, I tried to install samba with the following command :
ipkg -d opt install samba.

And of course the installation is made to "/opt" from above installation instruction + "/opt/bin/...." for example from the package compilation, which ends at /opt/opt/bin/.....

Is my understanding correct ?

In fact I took it from http://ipkgfind.nslu2-linux.org/; the package is precompiled with "/opt/...." installation target.
Thanks for your help; so I learned to take care what the installation target is.

I installed lighttpd and other apps in /opt and it won't start on reboot.
I modified the path, libs and everything ...

I have same problem

1. /opt/etc/default/lighttpd

OPTIONS="-f /opt/etc/lighttpd.conf"


2. /opt/etc/init.d/lighttpd

#!/bin/sh

BIN=lighttpd
DEFAULT=/opt/etc/default/$BIN
LOG_D=/opt/var/log/$BIN
RUN_D=/opt/var/run
PID_F=$RUN_D/$BIN.pid
[ -f $DEFAULT ] && . $DEFAULT

case $1 in
 start)
  mkdir -p $LOG_D
  mkdir -p $RUN_D
  $BIN $OPTIONS
  ;;
 stop)
  [ -f $PID_F ] && kill $(cat $PID_F)
  ;;
 *)
  echo "usage: $0 (start|stop)"
  exit 1
esac

exit $?