Linksys WRTSL54GS

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* Test of its performance. * Test of its performance.
<pre> <pre>
-/tmp # hdparm -tT /dev/scsi/host0/bus0/target0/lun0/+ 
-/dev/scsi/host0/bus0/target0/lun0/disc+/tmp # ls -ld /dev/scsi/host0/bus0/target0/lun0/*
-/dev/scsi/host0/bus0/target0/lun0/part1+brw------- 1 root root 8, 0 Jan 1 1970 /dev/scsi/host0/bus0/target0/lun0/disc
-/dev/scsi/host0/bus0/target0/lun0/part2+brw------- 1 root root 8, 1 Jan 1 1970 /dev/scsi/host0/bus0/target0/lun0/part1
-/dev/scsi/host0/bus0/target0/lun0/part3+brw------- 1 root root 8, 2 Jan 1 1970 /dev/scsi/host0/bus0/target0/lun0/part2
 +brw------- 1 root root 8, 3 Jan 1 1970 /dev/scsi/host0/bus0/target0/lun0/part3
/tmp # hdparm -tT /dev/scsi/host0/bus0/target0/lun0/part2 /tmp # hdparm -tT /dev/scsi/host0/bus0/target0/lun0/part2
Line 131: Line 132:
</pre> </pre>
 +
= Hobbit System Monitoring server on WRTSL54GS = = Hobbit System Monitoring server on WRTSL54GS =
TBC. TBC.

Revision as of 14:43, 8 July 2007

This page describe installaton of DD-WRT on WRTSL54GS. WRTSL54GS come with a USB port. With this port and DD-WRT firmware, doors are open for many different applications of this hardware.

Contents

Installation Procedures

  • The default lan ip address for wrtsl54gs is 192.168.1.1.
  • Download 23sp2 for WRTSL54GS.
  • Browse Linksys web server.
  • Upgrade the default linksys firmware using the standard version, dd-wrt.v23_wrtsl54gs.bin.
    • There is no need to use the mini-generic one as stated in the hwsupport.txt file.
C:\tmp\dd-wrt.v23_sp2_standard>dir
 Volume in drive C has no label.
 Volume Serial Number is 30F9-EE95

 Directory of C:\tmp\dd-wrt.v23_sp2_standard

02/18/2007  10:56 AM    <DIR>          .
02/18/2007  10:56 AM    <DIR>          ..
09/13/2006  04:59 PM            50,443 changelog.txt
09/15/2006  08:11 PM         3,502,080 dd-wrt.v23_asus.trx
09/15/2006  08:11 PM         3,502,080 dd-wrt.v23_generic.bin
09/15/2006  08:11 PM         3,503,104 dd-wrt.v23_wrt54g.bin
09/15/2006  08:11 PM         3,503,104 dd-wrt.v23_wrt54gs.bin
09/15/2006  08:11 PM         3,503,104 dd-wrt.v23_wrt54gsv4.bin
09/15/2006  08:11 PM         3,503,104 dd-wrt.v23_wrtsl54gs.bin
08/02/2006  04:24 AM             3,108 hwsupport.txt
09/13/2006  05:02 PM               592 notes.txt
               9 File(s)     21,070,719 bytes
               2 Dir(s)  12,612,669,440 bytes free

C:\tmp\dd-wrt.v23_sp2_standard>

Turn on SSHd

Go to web interface (default user in v23sp2 is root, password admin), by default at 192.168.1.1... then go to Administration->Services and turn on Secure Shell -> SSHd and Password Login.

Turn on JFFS2

SSH to your WRTSL45GS and run:

nvram set jffs_mounted=1
nvram set enable_jffs2=1
nvram set sys_enable_jffs2=1
nvram set clean_jffs2=1
nvram set sys_clean_jffs2=1
nvram commit
reboot

This reboot takes a while, be patient and don't power the unit off.

Add more packages

To get USB working, install these packages:

ipkg update
ipkg install kmod-usb-uhci
ipkg install kmod-usb-core
ipkg install kmod-usb2
ipkg install kmod-usb-storage
ipkg install hdparm
ipkg install kmod-vfat
ipkg install kmod-ext2
ipkg install kmod-ext3

Then you need to load the modules:

insmod /jffs/lib/modules/2.4.30/usbcore.o
insmod /jffs/lib/modules/2.4.30/ehci-hcd.o
insmod /jffs/lib/modules/2.4.30/scsi_mod.o
insmod /jffs/lib/modules/2.4.30/usb-storage.o
insmod /jffs/lib/modules/2.4.30/sd_mod.o

Modules won't stay loaded across reboots - see USB howto for more: USB wiki page. Basically, you want to make your own startup script in /jffs/etc/config. Make sure it ends in .startup, like myscript.startup.

My script:

#!/bin/sh
insmod /jffs/lib/modules/2.4.30/usbcore.o
insmod /jffs/lib/modules/2.4.30/ehci-hcd.o
insmod /jffs/lib/modules/2.4.30/scsi_mod.o
insmod /jffs/lib/modules/2.4.30/usb-storage.o
insmod /jffs/lib/modules/2.4.30/sd_mod.o
insmod /jffs/lib/modules/2.4.30/fat.o
insmod /jffs/lib/modules/2.4.30/vfat.o
insmod /jffs/lib/modules/2.4.30/ext2.o
insmod /jffs/lib/modules/2.4.30/ext3.o
sleep 2

mount /dev/scsi/host0/bus0/target0/lun0/part1 /mnt
mount /dev/scsi/host0/bus0/target0/lun0/part2 /opt

Note that scripts in /jffs/etc/config appear to run in parallel!

Getting Samba2 running

This isn't easy! when I did ipkg-install samba, it was broken (running a binary gives you a bad symbol or something about fstat64).

How I did it: use Optware, with opt mounted on your USB HD (see my script above). Yeah, you've gotta mount /opt somewhere because the samba2 package alone is >7mb!

When optware is installed and working, ipkg-opt install samba2 should fix you up.


Turn on SNMP monitoring

Dude, a free network monitoring tool

Enable snmp client on dd-wrt v23 sp2

  • snmp client dd-wrt support both snmp v1 and v2.
  • see following screenshot.

Image:Wrtsl54gs-snmpv2-dude.jpg

USB flash disk

  • Test of its performance.

/tmp # ls -ld /dev/scsi/host0/bus0/target0/lun0/*
brw-------    1 root     root       8,   0 Jan  1  1970 /dev/scsi/host0/bus0/target0/lun0/disc
brw-------    1 root     root       8,   1 Jan  1  1970 /dev/scsi/host0/bus0/target0/lun0/part1
brw-------    1 root     root       8,   2 Jan  1  1970 /dev/scsi/host0/bus0/target0/lun0/part2
brw-------    1 root     root       8,   3 Jan  1  1970 /dev/scsi/host0/bus0/target0/lun0/part3
/tmp # hdparm -tT /dev/scsi/host0/bus0/target0/lun0/part2

/dev/scsi/host0/bus0/target0/lun0/part2:
 Timing cached reads:   156 MB in  2.00 seconds =  78.00 MB/sec
 Timing buffered disk reads:   20 MB in  3.24 seconds =   6.17 MB/sec
/tmp # date
Sun Jul  8 10:38:27 UTC 2007
/tmp #

Hobbit System Monitoring server on WRTSL54GS

TBC.

Hobbit System Monitoring client on WRTSL54GS

TBC.

Known bugs of DD-WRT V23sp2 with WRTSL54GS

  • 192.168.1.1 will not startup after some DD-WRT GUI operation.
    • Fix, close all the exising browser window and power cycle the WRTSL54GS.