The WD ShareSpace is shipped with a similiar system setup as the MyBook World Editions. The newest firmware 2.1.93 with MioNet 220.127.116.11 (as of 15.3.2009) is running the 18.104.22.168-arm1 kernel. SSH access can be enabled through the http-admin. No hacks are needed for full access.
It has vsftpd configured but lacks support for ssl-encryption.
The following commands should work on all sharespace models and with the newest firmware:
wget http://ipkg.nslu2-linux.org/feeds/optware/cs05q3armel/cross/unstable/ipkg-opt_0.99.163-10_arm.ipk tar -xOvzf ipkg-opt_*_arm.ipk ./data.tar.gz | tar -C / -xzvf - mkdir -p /opt/etc/ipkg echo "src armel http://ipkg.nslu2-linux.org/feeds/optware/cs05q3armel/cross/unstable" > /opt/etc/ipkg/armel-feed.conf /opt/bin/ipkg update
Add /opt/bin to your path (quickfix: export PATH=$path:/opt/bin) and go ahead and 'ipkg install' whatever you need.
Cron can be enabled easily:
mkdir -p /var/spool/cron/crontabs echo -e "#!/bin/sh\ncrond -c /var/spool/cron/crontabs -b" > /etc/init.d/S61crond chmod u+x /etc/init.d/S61crond
VM tuning, freeing up memory
pdflushd is using high CPU %. If you want to reduce that, you can instruct the kernel to allow high percent of the memory be used for disk cache / buffers, and swap off all processes possilbe (to make even more memory for disk caching):
sysctl -w vm.dirty_ratio=60 sysctl -w vm.dirty_background_ratio=80 sysctl -w vm.swappiness=100
I have also disabled all services but FTP and CIFS (= samba = smbd = windows file sharing). No iTunes server, no Twonky, no AFS and no NFS.
To disable Mionet rename its startup script, and make it not executable:
mv /etc/init.d/S9M_mionet /etc/init.d/_S9M_mionet chmod ugo-x /etc/init.d/_S9M_mionet
Portmap is used only for NFS, so you can disable that as well the same way.
After you have properly set up the device you can also disable web interface the same way: name of the startup file ends with mini_httpd.
This gets me (2,7TB 4 disk RAID5) generaly 34-36MByte/sec reading from NAS and 9+MByte/sec writing to NAS using the unmodified vsftp config of the firmware. (I have checked and there do not seem to be performance related fixes between the 2.0.4+ version of the firmware, and the latest version).
Strangely enough there is one file that gives me maximum 25MByte/sec read speed. Even e2fsck did not help. However it showed I have plenty of fragmented files.
Samba is pretty slow (2,7TB 4 disk RAID5): ~6MB/s to write and 10-15MB/s to read (firmware has version 3.0 of it). The latest Samba 3.6 supports SMB2 protocol, maybe that should speed it up (if used with Vista, Windows 7 or Samba client 3.6+). If you try it, let us know on this page. :)
With some useful notes
I recently got a new 2tb Western Digital Sharespace to replace my mybook, similar it sounds to the newer editions of
the mybook this is running a 22.214.171.124-arm1 kernel.
ssh is not built in the default factory install, the older firmware had a debug page that enabled you to activate telnetd without
any hacking (required root account but that is not hard to find).
The newest firmware (with twonky included) no longer has the php that allowed you to enable telnetd so the only
immediately obvious way to gain access was to mount the filesytem on another PC and simply enable telnet
echo "telnet stream tcp nowait root /usr/sbin/telnetd /usr/sbin/telnetd" » /mnt/whatever/etc/inetd.conf
once you have telnet enabled you can install ipkg and use the cs05q3armel optware feed for packages