This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-devel] [PVUSB] usbbusname is changing after rebooting

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] [PVUSB] usbbusname is changing after rebooting
From: Sergey <tsv.devel@xxxxxxxxx>
Date: Mon, 18 May 2009 19:35:34 +0400
Delivery-date: Mon, 18 May 2009 08:45:49 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla-Thunderbird (X11/20090103)
Hello, all!
Hello, Noboru!

Hotplug rule for PVUSB consists of
<usbbusname>:<domid>:<vusb number>:<port number>

I noticed that usbbusname sometimes changes from time to time after host rebooting.
For example, yesterday i had it as "6-1", today it is "2-1".

I saw the topic about usbbusname on replugging.
Replugging doesn't change the usbbusname, but what about host rebooting?

I suppose, usb bus number is assigned during booting and may vary each time. To identify usb device correctly i have to see dmesg after rebooting. It's quite inconvinient, imho.

What do you think about another method of USB naming like VendorId:ProductId of usb devices to be grabbed by domU? It seems that HVM guests use this method by means of the parameter 'usbdevice'.

Thank you.


This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

Xen-devel mailing list

<Prev in Thread] Current Thread [Next in Thread>