I often wondered myself is there is something like that on Linux. I know a similar command from AIX which is cfgmgr and should be like ioscan - it can be run and just finds everything newly discovered and makes the device ready for use.
Rosetta Stone for Unix shows following tools:
Quote:
udev (2.6+)
udevtrigger
modprobe
kerneld
insmod
hotplug
cardctl
Maybe one of them might help you. If it is not hot pluggable, you will have to turn off the box anyway and so with it will check for new hardware at boot (don't ask me how to trigger this, but if you find out, let us know here please).
If it is hot pluggable, maybe try with something like that command "hotplug", idk, sorry.