consistent device name

[Erez D]

Correction:

/dev/serial/by-path use consistent names

thanks,
erez.

On Wed, Jan 5, 2011 at 3:21 PM, Erez D <erez0001 at gmail.com> wrote:

>
>
> On Wed, Jan 5, 2011 at 2:58 PM, Tzafrir Cohen <tzafrir at cohens.org.il>wrote:
>
>> On Wed, Jan 05, 2011 at 02:25:39PM +0200, Erez D wrote:
>> > HI
>> >
>> > I have 2 identical USB to Serial dongles
>> >
>> > If I connect them to an XP box, i get assigned a COM port according to
>> the
>> > usb port i connected to
>> > If I connect them to a Linux Box, i get assigned a ttyUSBn port
>> according to
>> > the order i connected them
>> >
>> >
>> > as i am not always aware of the order i connect them, and it is not
>> uniquly
>> > defined if the are both connected at boot time,
>> > I get the device name swapped every reboot.
>> >
>> >
>> > is there a way to assign a constant device name according to the USB
>> port it
>> > is connected to and not via the order it is connected
>> > (under linux of course)
>>
>> Use the symlinks under /dev/serial/by-id rather than /dev/ttyUSBn
>> directly.
>>
>> The problem is that the dongles are identical, so /dev/serial/by-id has
> only one file which links to the last one inserted.
>
>  /dev/serial/by-path has different links, however they are not consistent
> either, and change every time i remove and reinsert the dongle
>
> thanks,
> erez.
>
>> Or figure out how they are generated from the udev rules, and make your
>> own
>> custom constant device names. At first glance this is
>> /lib/udev/rules.d/60-persistent-serial.rules on my system.
>>
>> --
>> Tzafrir Cohen         | tzafrir at jabber.org | VIM is
>> http://tzafrir.org.il |                    | a Mutt's
>> tzafrir at cohens.org.il |                    |  best
>> tzafrir at debian.org    |                    | friend
>>
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>>
>
>
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