On 03/14/2017 02:27 PM, Stephen Morris wrote:
On 3/15/17 3:25 AM, Tom Horsley wrote:
> On Tue, 14 Mar 2017 09:43:45 -0700
> Rick Stevens wrote:
>
>> Like I said, it's damned difficult to come up with something. If you
>> have a better idea, then submit it to the various kernel groups.
> I do have a better idea: Go back to the way it was when you could
> use udev to permanently assign names to interfaces :-).
>
> As you have just shown it is impossible to get it "right" but
> before they "fixed" it, you could at least get it to remain
> consistent with the udev rules.
>
> Stop trying to solve impossible problems.
I have several questions around the naming convention.
My usb wireless adapter is named wlp3s0u2, hence the naming convention
is saying the adapter is usb device 3. I do have 3 usb devices
connected. Two of the devices are usb 2 and the adapter is usb 3, hence
when the device enumeration is done to determine what exists, what
controls whether usb 2 devices are enumerated first , is it software or
the motherboard?
Remember, we're talking about network interfaces here and the naming
conventions we've been discussing here ONLY affects network interfaces.
Assuming the naming convention is based on
enumeration
which it may not be given that, I have 2 usb 3 slots on the front of my
machine and, if on the running system I unplug my wireless adapter and
plug it into the second slot, when the system recognizes the device
again the name changes to wlp3s0u1. Also I have 2 usb 2 slots on the
front of my machine, and if I do the same thing to my adapter and unplug
it from the usb 3 slot and plug it into the second usb 2 slot the name
changes to wlp0s19f2u3, hence what does the naming convention actually
represent?
I'm not sure. It sounds like all the USB hubs in your machine interface
through PCI slot 3. I would have expected that the various hubs would
have different "s" numbers (e.g. one hub on p3s0, one on p3s1, etc.).
As I said above I have 3 usb devices, the other 2 are a keyboard and
the
transmitter for my wireless mouse. How do I find what the naming
convention for those two devices is, in terms of what they are actually
named?
They'd show up in the dmesg log, but they will NOT be named things like
"wlp3". Again, that's just for wireless NICs. I have a Logitech wireless
keyboard and mouse and this is how they appear in dmesg:
[ 2.556799] logitech 0003:046D:C517.0001: input,hidraw1: USB HID
v1.10 Keyboard [Logitech USB Receiver] on usb-0000:00:14.0-5/input0
[ 2.608866] logitech 0003:046D:C517.0002: input,hiddev0,hidraw2: USB
HID v1.10 Mouse [Logitech USB Receiver] on usb-0000:00:14.0-5/input1
Lastly, if I plug a flash driver into the usb 3 slot where my
wireless
adapter was what name does it inherit and how do I find out?
It would most likely be /dev/sdX, where "X" was the next sequential disk
number available at the time you plugged the device in.
regards,
Steve
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--
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- Rick Stevens, Systems Engineer, AllDigital ricks(a)alldigital.com -
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- We are born naked, wet and hungry. Then things get worse. -
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