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linuxtuxhellsinki l33t
Joined: 15 Nov 2004 Posts: 700 Location: Hellsinki
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Posted: Wed Nov 19, 2008 9:57 pm Post subject: XEN - serialport & usb for DomU ? |
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So, how could I configure serialports (ttyS0/1) and maybe some usb-devices to work in just one DomU
In that way I don't have to "emulate/virtualize" 'em via dom0, but they're "kind of" straight connected/used in just one domU ? _________________ 1st use 'Search' & lastly add [Solved] to
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BlackEye l33t
Joined: 04 Dec 2002 Posts: 756 Location: Germany
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Posted: Thu Nov 20, 2008 11:17 am Post subject: |
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You can bridge the serialport by the following steps (at least - these are the steps I did)
Disable serialport useage by xen. In default, xen use the serial port by its own to let you connect to your xen terminal
-> edit your grub.conf and change your boot entry to something like this:
Code: | title Xen-Server
root (hd0,0)
kernel /boot/xen.gz
module /boot/kernel-xen xencons=off root=/dev/ram0 init=/linuxrc real_root=/dev/dm-1 dodmraid
module /boot/initramfs-xen |
The important thing is the xencons=off
Now, reboot your machine, edit your domU config file and add the following:
Code: | serial = "/dev/ttyS0" |
To get USB to work under your domU you need (beside some luck) the following in your domU config:
Code: | usb=1
usbdevice='host:0572:1328' |
where the usbdevice-address the the address of your usb device you wish to have in your domU. You can grab this address from lsusb.
Instead of the individual address of the device, you can either describe the device by the Bus/Device address of your usb-adapter by using the following lines:
Code: | usb=1
usbdevice='host:003.001' |
This describes the device which is connected on the BUS 003 and Device 001
However - I was only able to bridge a storeage device like an usb-stick into the domU. Afaik, there are many problems with these usb bridging method.
As a second and maybe better solution, you can bridge the whole usb-adapter into your domU. Unfortunately these need vt-t technologie to be working and enabled for your mainboard. But with this method you should be able to fully use the USB-Adapter in your domU
hth,
Martin |
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