[CentOS-es] Re VirtualBox y los USB.

[Mario Ganga]

Hola

esto encontre en un foro de centos es un extracto del manual de VirtualBox
lo malo esdta en ingles pero no se ve muy dificil, yo ocupo xen, y virtual
box en ubutu....

>From VirtualBox manual:

11.4.6 USB not working
If USB is not working on your Linux host, make sure that the current user
has permission
to access the USB filesystem (usbfs), which VirtualBox relies on to retrieve
valid
information about your host’s USB devices.

As usbfs is a virtual filesystem, a chmod on /proc/bus/usb has no effect.
The
permissions for usbfs can therefore only be changed by editing the
/etc/fstab file.
For example, most Linux distributions have a user group called usb or
similar, of
which the current user must be a member. To give all users of that group
access to
usbfs, make sure the following line is present:
# 85 is the USB group
none /proc/bus/usb usbfs devgid=85,devmode=664 0 0
Replace 85 with the group ID that matches your system (search /etc/group for
“usb”
or similar). Alternatively, if you don’t mind the security hole, give all
users access to
USB by changing “664” to “666”.
The various distributions are very creative from which script the usbfs
filesystem
is mounted. Sometimes the command is hidden in unexpected places.
For SuSE 10.0 the mount command is part of the udev configuration file
/etc/udev/rules.d/50-udev.rules. As this distribution has no user group
called usb, you may e.g. use the vboxusers group which was created by the
VirtualBox installer. Since group numbers are allocated dynamically, the
following
example uses 85 as a placeholder. Modify the line containing (a linebreak
has been
inserted to improve readability)
DEVPATH="/module/usbcore", ACTION=="add",
RUN+="/bin/mount -t usbfs usbfs /proc/bus/usb"
and add the necessary options (make sure that everything is in a single
line):
DEVPATH="/module/usbcore", ACTION=="add",
RUN+="/bin/mount -t usbfs usbfs /proc/bus/usb -o devgid=85,devmode=664"
Debian Etch has the mount command in /etc/init.d/mountkernfs.sh. Since
that distribution has no group usb, it is also the easiest solution to allow
all members
of the group vboxusers to access the USB subsystem. Modify the line
domount usbfs usbdevfs /proc/bus/usb -onoexec,nosuid,nodev
so that it contains
domount usbfs usbdevfs /proc/bus/usb
-onoexec,nosuid,nodev,devgid=85,devmode=664
As usual, replace the 85 with the actual group number which should get
access to
USB devices.
Other distributions do similar operations in scripts stored in the
/etc/init.d directory.

Suerte.

Espero te ayude.

Atte.

Mario Ganga Castro.




2009/3/17 Julio Martinez <hulyom en yahoo.com>

> Monica,
>
> Si tu objetivo es solamente crear Maquinas virtuales en tu maquina que
> tiene ya CentOS, entonces seria mejor que utilices Xen, el kernel de Xen y
> obviamente escogiendo el kernel Xen cuando GRUB te da la opcion al arranque
>
> Saludos
>
> Julio
> ________________
>
> >Hola a todos:
> >Tengo un pequeño problemilla con VirtualBox...
> >instalado sobre CentOs.....
> >Última versión de CentOS, última versión de VirtualBox.
> >mi problema es qeu no consigo que reconozca los USB....
> >si alguno sabéis alguna manera....agradecería que me comentéis como va!!
> >Ya qeu no se como haceeeerlooooo...sniff!!
> >Muchas gracias a todos!!
>
>
>
> _______________________________________________
> CentOS-es mailing list
> CentOS-es en centos.org
> http://lists.centos.org/mailman/listinfo/centos-es
>
>
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