Xen project Mailing List

On Fri, Jul 5, 2013 at 6:48 AM, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:

Hello,

You are correct - I never considered USB ethernet devices when writing interface-rename. I shall raise a ticket to deal with this. This logic was substantially "improved" from 6.0.2 -> 6.1, including much more careful control of what was considered valid.

In an effort to help (as we don't appear to have any in our testing environment), could you collect the outputs of "biosdevname -d", "lspci -tv", "lsusb", "lsusb -tv" and also attach /var/log/interface-rename.log ?

As for a temporary hack for this system, can you attach your current /etc/udev/rules.d/60-net.rules and the output of "udevinfo -a -p /sys/class/net/<bad eth>" ?

~Andrew

On 05/07/13 11:03, Rob Hoes wrote:

Hi Andrew,

The interface-rename script is intended to deal with situation where network cards are being replaced, removed or added, and tries to make sure that you still have the eth* names you would expect. For example, if you have a host with 2 NICs and replace eth1 with a new NIC in the same slot, the new NIC will again be called eth1 (and not eth2).

However, this wasn't designed with USB interfaces in mind, because USB is not very common on the servers for which XenServer is normally used. So it is probably not going to work very well, as you have noticed.

CC'ing Andrew Cooper, who worked on this. Andrew: do you think this is easy to address? A quick solution may be to give USB NICs a prefix other than "eth" to separate them from the regular PCI NICs, and to leave them alone after that?

Cheers,

Rob

On 5 Jul 2013, at 00:52, Andrew Eross <eross@xxxxxxxxxxxx> wrote:

Update to that -

I've found there is kind of a work-around, although this isn't a great idea.

Since I know my simple system only has eth0/eth1 and one of them is USB and is detected later in the boot process, there's probably little chance of any race conditions with the adapters, so basically if you disable net-rename-sideways.sh, it can work for the moment.

I temporarily disabled /etc/udev/scripts/net-rename-sideways.sh by just a hack:

if [[ "$1" =~ "^TEMPDISABLEDeth[0-9]+$" ]]

And now it all works again after doing the usual to introduce a physical interface, etc: http://support.citrix.com/article/CTX121615

Of course, I hope there's a real/better solution for the future and I wouldn't be doing the above on important production systems (well, I probably also wouldn't be using a USB network adapter on a really important system, but I digress).

Cheers,

Andrew

On Fri, Jul 5, 2013 at 9:33 AM, Andrew Eross <eross@xxxxxxxxxxxx> wrote:

Hi guys,

I had a Mac Mini running XS 6.0.2 that used a USB network adapter for it's management interface.

Never any issues.

I've installed a clean XS 6.2 over it this morning, with no changes made to the hardware setup, just installed the new software.

Now the USB network adapter is no longer working properly, and is named "side-48348-eth1" instead of "eth1".

I've dug further into this and I think it's something to do with interface-rename.py/udev/net-rename-sideways.sh

net-rename-sideway.sh is correctly renaming the adapter to 'side-<random number-eth1' at start-up, which is normal

The problem seems to be that it doesn't get renamed back to eth1 later on like it's supposed to be.

I see "Later, an RC3 script will take these renamed devices and rename them correctly." inside net-rename-sideways.sh, but this doesn't seem to be happening.

I might've found a hint when I tried running interface-rename.py manually just to see what happens:

./interface-rename.py --rename

ERROR [2013-07-05 09:30:46] Can't generate current state for interface '{'Driver': 'asix', 'Bus Info': 'usb-0000:00:1d.7-1.3', 'BIOS device': {'all_ethN': 'eth1', 'physical': ''}, 'Assigned MAC': '80:49:71:11:84:FC', 'Firmware version': 'ASIX AX88772 USB 2.0 Ethernet', 'Driver version': '14-Jun-2006', 'Kernel name': 'eth1'}' - Unrecognised PCI address 'usb-0000:00:1d.7-1.3'

Maybe some sub-system doesn't like the PCI address being a usb device? There must've been a change somewhere between XS 6.0.2 to 6.2 related to this?

Any ideas on a work-around / hopefully we can fix this in a future release?

Thanks!

Andrew

_______________________________________________
Xen-api mailing list
Xen-api@xxxxxxxxxxxxx
http://lists.xen.org/cgi-bin/mailman/listinfo/xen-api

Re: [Xen-API] XS 6.2 USB Network Adapter Problems