USB Devices - Revision history

Glenn: + Category:Documentation

2011-10-21T19:43:21Z

2010-06-20T19:17:34Z

2010-06-20T19:17:06Z

‎Declare USB tree in UBUNTU Lucid Lynx

2010-06-20T19:16:29Z

2010-06-04T13:37:09Z

Undo revision 4026 by 127.0.0.1 (Talk)

2009-10-23T00:46:22Z

‎Unhide the `/proc/bus/usb` directory

2009-09-16T01:29:31Z

Undo revision 3899 by 68.224.49.143 (Talk)

2009-09-15T11:04:37Z

‎Unhide the `/proc/bus/usb` directory

2007-04-21T11:21:45Z

‎Unhide the `/proc/bus/usb` directory

2007-04-21T11:17:13Z

← Older revision		Revision as of 19:43, 21 October 2011
Line 52:		Line 52:

	Information came from [http://www.paul.sladen.org/vserver/archives/200610/0053.html this thread] (credit: Daniel Hokka Zakrisson) and from followup in IRC on 21 April 2007, again credit to Daniel.		Information came from [http://www.paul.sladen.org/vserver/archives/200610/0053.html this thread] (credit: Daniel Hokka Zakrisson) and from followup in IRC on 21 April 2007, again credit to Daniel.
		+
		+	[[Category:Documentation]]

@@ Line 44: / Line 44: @@
 On the new Ubuntu (10.04), /proc/bus/usb does no longer exist. Here is a solution to declare the USB tree :
-{{
+<pre>
 mkdir -p /vservers/<guest>/dev/bus/usb
 echo "/dev/bus/usb /dev/bus/usb ext3 rbind 0 0" >> /etc/vservers/<guest>/fstab
-}}
+</pre>
 == Thanks ==
 Information came from [http://www.paul.sladen.org/vserver/archives/200610/0053.html this thread] (credit: Daniel Hokka Zakrisson) and from followup in IRC on 21 April 2007, again credit to Daniel.

@@ Line 44: / Line 44: @@
 On the new Ubuntu (10.04), /proc/bus/usb does no longer exist. Here is a solution to declare the USB tree :
 mkdir -p /vservers/<guest>/dev/bus/usb
 echo "/dev/bus/usb /dev/bus/usb ext3 rbind 0 0" >> /etc/vservers/<guest>/fstab
 == Thanks ==
 Information came from [http://www.paul.sladen.org/vserver/archives/200610/0053.html this thread] (credit: Daniel Hokka Zakrisson) and from followup in IRC on 21 April 2007, again credit to Daniel.

@@ Line 39: / Line 39: @@
 Now enter the guest, and see if you can see `/proc/bus/usb/devices`.  Better still, plug in a USB device and see if it shows up in there.
 == Thanks ==
 Information came from [http://www.paul.sladen.org/vserver/archives/200610/0053.html this thread] (credit: Daniel Hokka Zakrisson) and from followup in IRC on 21 April 2007, again credit to Daniel.

@@ Line 1: / Line 1: @@
 By default, USB devices you plug in to your physical host are not available to your vserver guests.  To make all your USB devices available to a specific guest, follow these instructions:
-European Patent Office and by the Organisation for Economic Cooperation and Development. ,
+== Unhide the `/proc/bus/usb` directory ==
 == Mount the USB filesystem in the guest ==

@@ Line 1: / Line 1: @@
 By default, USB devices you plug in to your physical host are not available to your vserver guests.  To make all your USB devices available to a specific guest, follow these instructions:
-== Unhide the `/proc/bus/usb` directory ==
+European Patent Office and by the Organisation for Economic Cooperation and Development. ,
-−
-On the host, you can do one of the following:
-−
-To do it as a '''''one-off''''', type the following as root:
-<pre>
-vnamespace -n bash
-umount -n /proc/bus/usb
-setattr --~hide /proc/bus
-setattr --~hide /proc/bus/usb
-</pre>
-−
-:''Note:'' this creates a new namespace and lauches bash in that context.  It then umounts the USB filesystem and then unhides the USB subsystem.  Note that this doesn't unmount USB for the host, or any existing guests, but the umount is necessary for the setattr to take effect.
-−
-To make this '''''persist for a specific guest''''', add the following to `/etc/vservers/<guest>/scripts/pre-start`:
-<pre>
-vnamespace -n bash -c "umount -n /proc/bus/usb ; setattr --~hide /proc/bus ; setattr --~hide /proc/bus/usb"
-</pre>
-−
-:''Note'' this is a bit of brute force.  It enables ''all'' guests to see USB (assuming they have the right `fstab` entry, below, and doesn't turn it off.  If you want to be more fancy, you can probably rehide the USB when the guest is shut down.  However, this will break if you have more than once guest using USB
 == Mount the USB filesystem in the guest ==