e2retrieve is an Ext2 data recovery tool that works on truncated or partial filesystems. It is very useful to retrieve data when a disk from an LVM crashes. It does not repair the filesystem but extracts and copies most of the data it can from raw Ext2 data given to it.
hddtemp shows the temperature of your IDE or SCSI hard drive by reading S.M.A.R.T. information. Note: only modern drives have a temperature sensor. A plugin for Gkrellm is also available.
IDEload monitors IDE controller IRQ activity and
global disk activity. It shows different
histograms (one per controller and one for global
disk activity.