Linux – How to scan New network card or any other devices in linux

I had issues setting this up with Ubuntu Server 8.04 as well. The answer lay in this Ubuntu Launchpad entry. It turns out VMWare are using a very old method of scanning for USB devices. In Ubuntu this can be reenabled by editing /etc/init.d/mountdevsubfs.sh and uncommenting the following:

#
# Magic to make /proc/bus/usb work
#
mkdir -p /dev/bus/usb/.usbfs
domount usbfs "" /dev/bus/usb/.usbfs -obusmode=0700,devmode=0600,listmode=0644
ln -s .usbfs/devices /dev/bus/usb/devices
mount --rbind /dev/bus/usb /proc/bus/usb

After rebooting the VMWare web console successfully detected the USB devices. What you should see when logged into the VMWare Server web console is a small USB icon in the top menu on the far right. It is then a case of selecting your Windows VM, going up to the dropdown and selecting the USB device you want to attach to that VM.

• Make sure you have added the USB controller virtual hardware device to the Windows VM.
• I have not tested this with Intrepid, but it works fine with the latest release of Hardy (8.04LTS).

This is what I have used for systems with dm-multipath and LVM; modify as needed:

1) Increase size of LUN in SAN
2) Check with "multipath -ll" which devices belong to said LUN
3) For each device above, do "echo 1 > /sys/block/sdX/device/rescan"
4) Go to multipath command line with "multipathd -k"
5) For each device, do "del path sdX", "add path sdX" while hoping that
the multipathing functionality works as advertised and fails over properly.
6) "resize map multipath-map-name"
7) Exit multipath command line (Ctrl-D), check with "multipath -ll" that
new size is seen.
8) pvresize, lvextend, resize2fs
9) Profit!

This works as of RHEL 5.3.