В Sun, 6 Jul 2014 01:11:54 -0400 shawn wilson <ag4ve.us@xxxxxxxxx> пишет: > On Sat, Jul 5, 2014 at 11:31 PM, Greg KH <greg@xxxxxxxxx> wrote: > > On Sat, Jul 05, 2014 at 10:18:31PM -0400, shawn wilson wrote: > >> I've got a few usb to 4 serial port hubs. The problem is that > >> sometimes the ttyUSB* devs get resorted. I'm trying to write rules to > >> handle them (and maybe name the devices after the machines they're > >> connected to) however, I'm stuck because they only show up as one usb > >> device (and not another usb hub with a serial device on each port): > > > > What's wrong with the symlinks that show up in /dev/serial/ that should > > be "persistent"? > > > > Yes, I think that'll work (though if it's possible, it would be cool > to figure out how to write the udev rule for it). > > This is weird too (I think probably a bug?): More likely that your device does not provide serial number, so basically last link in serial/by-id wins in random order. > # ls /dev/serial/by-path/ -l > total 0 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:3:1.0-port0 -> ../../ttyUSB0 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:3:1.0-port1 -> ../../ttyUSB1 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:3:1.0-port2 -> ../../ttyUSB2 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:3:1.0-port3 -> ../../ttyUSB3 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:4:1.0-port0 -> ../../ttyUSB4 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:4:1.0-port1 -> ../../ttyUSB5 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:4:1.0-port2 -> ../../ttyUSB6 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:4:1.0-port3 -> ../../ttyUSB7 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:5:1.0-port0 -> ../../ttyUSB8 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:5:1.0-port1 -> ../../ttyUSB9 > lrwxrwxrwx 1 root root 14 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:5:1.0-port2 -> ../../ttyUSB10 > lrwxrwxrwx 1 root root 14 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:5:1.0-port3 -> ../../ttyUSB11 > lrwxrwxrwx 1 root root 14 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:6:1.0-port0 -> ../../ttyUSB12 > lrwxrwxrwx 1 root root 14 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:6:1.0-port1 -> ../../ttyUSB13 > lrwxrwxrwx 1 root root 14 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:6:1.0-port2 -> ../../ttyUSB14 > lrwxrwxrwx 1 root root 14 Jun 19 12:55 > pci-0000:00:1d.7-usb-0:6:1.0-port3 -> ../../ttyUSB15 > # ls /dev/serial/by-id/ -l > total 0 > lrwxrwxrwx 1 root root 14 Jun 19 12:55 > usb-Keyspan__a_division_of_InnoSys_Inc._Keyspan_USA-49WG-if00-port0 -> > ../../ttyUSB12 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > usb-Keyspan__a_division_of_InnoSys_Inc._Keyspan_USA-49WG-if00-port1 -> > ../../ttyUSB9 > lrwxrwxrwx 1 root root 14 Jun 19 12:55 > usb-Keyspan__a_division_of_InnoSys_Inc._Keyspan_USA-49WG-if00-port2 -> > ../../ttyUSB14 > lrwxrwxrwx 1 root root 13 Jun 19 12:55 > usb-Keyspan__a_division_of_InnoSys_Inc._Keyspan_USA-49WG-if00-port3 -> > ../../ttyUSB7 > -- > To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
