Re: [vserver] usb ports in guest?

From: Chuck <chuck_at_sbbsnet.net>
Date: Thu 30 Sep 2010 - 09:12:16 BST
Message-Id: <201009300412.16399.chuck@sbbsnet.net>

thanks for the info Adrian!

i managed to find a page dedicated to usb devices here:

http://linux-vserver.org/USB_Devices

however, i get an error in the host messages file... it does not appear to bother the
guest in finding the usb devices, but i am concerned if it is an error i need to pay
attention to or not..

the line returned on the host when using

cat /proc/mounts | grep usbfs

is this:

usbfs /proc/bus/usb usbfs rw,nosuid,noexec,relatime 0 0

this above line is pasted in the guest fstab.

the guest has no startup errors showing on the screen or in its messages log and lsusb
shows the usb devices just fine, however in the host messages log file i find this entry:

Sep 30 03:55:53 enterprise kernel: usbfs: unrecognised mount option "relatime" or missing
value
Sep 30 03:55:53 enterprise kernel: usbfs: mount parameter error.

does anyone know if this is a critical problem or can /should i ignore it?

On Thursday, September 30, 2010, Adrian Reyer wrote:
> On Wed, Sep 29, 2010 at 05:50:48PM -0400, Chuck wrote:
> > i have a 64bit centos5 guest running, however i need for it to see the usb ports. the
> > application i will be using requires the usb encryption key installed at all times.
> > presently lsusb does not see anything. i have looked in the capabilities and flags
page
> > but cannot find anything specific to releasing the usb ports to the guest.
> > is there a way?
>
> If the key generates some entry in /dev, you might just try and mknod
> that very device within the guest.
> udevadm monitor
> might give you a hint there. If the device exists somewhere else all the
> time you might try and just write an udev-script that creates this device
> within the guest on the fly (and possibly removes it again when it is
> removed)
> Currently I am doing similar things for keyboard/mouse/USB-VGA adapter,
> however, the setup is not yet finished for my goals. The code my work
> bases on is at
> git clone http://git.plugable.com/webdav/misc-udlfb
> the 'usbseat' stuff has working examples for udev-generated devices and
> scripts running as a result. They are easy to understand and you should
> be able to adopt them (basically remove most of the lines) easily.
>
> Regards,
> _are_
> --
> LiHAS - Adrian Reyer - Hessenwiesenstraße 10 - D-70565 Stuttgart
> Fon: +49 (7 11) 78 28 50 90 - Fax: +49 (7 11) 78 28 50 91
> Mail: lihas_at_lihas.de - Web: http://lihas.de
> Linux, Netzwerke, Consulting & Support - USt-ID: DE 227 816 626 Stuttgart
>

-- 
Chuck
Received on Thu Sep 30 09:12:33 2010
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