Re: Stic device naming with udev, help please
* Florian Kulzer <florian.kulzer+debian@icfo.es> [2008 Nov 15 08:04 -0600]:
> On Sat, Nov 15, 2008 at 07:21:59 -0600, Nate Bargmann wrote:
> > * Rob Starling [2008 Nov 15 03:10 -0600]:
>
> [...]
>
> > > try naming them something interesting so you're not competing
> > > with the auto-generated numbered ones. (you didn't remove the
> > > existing rules, did you?)
> > >
> > > "tty_dongleA" and "tty_dongleB" maybe?
> >
> > That seemed like a good idea. So I modified my rules file as follows:
> >
> > # Setup Prolific Technology Inc. USB-Serial Controller dongles for statice names
> > KERNEL=="ttyUSB0", SUBSYSTEMS=="usb-serial", ATTRS{busnum}=="6", ATTRS{devnum}=="3", DRIVERS=="pl2303", SYMLINK+="tty_dgl0"
> > KERNEL=="ttyUSB1", SUBSYSTEMS=="usb-serial", ATTRS{busnum}=="7", ATTRS{devnum}=="5", DRIVERS=="pl2303", SYMLINK+="tty_dgl1"
> >
> > and no symlinks were created although /dev/ttyUSB0 and /dev/ttyUSB1
> > exist and they came up in the order that I want (probably will change
> > on the next restart).
>
> I would try it like this:
>
> KERNEL=="ttyUSB*", SUBSYSTEMS=="usb", ATTRS{busnum}=="6", ATTRS{devnum}=="3", SYMLINK+="tty_dgl0"
> KERNEL=="ttyUSB*", SUBSYSTEMS=="usb", ATTRS{busnum}=="7", ATTRS{devnum}=="5", SYMLINK+="tty_dgl1"
>
> After you change the rules, restart udev (!) and test what happens:
>
> udevtest $(udevinfo --query=path --name /dev/usb/ttyUSB0) | grep -E 'get_name|symlink'
I changed them to your suggestion above, then ran `/etc/init.d/udev
reload' but still no symlinks.
udevtest no longer exists in Sid. It has been replaced by
`udevadm test [options] devpath' which then tells me after reading all
of the rules files:
udevadm test /dev/tty_dgl0
.
.
.
unable to open device '/dev/tty_dgl0'
> I have no experience with usb serial modems; there might be a more
> robust way to ensure deterministic identification, but I need to see the
> full "udevinfo -a ..." output to come up with further proposals.
Would you like that output privately or via the list?
- Nate >>
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