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I have two HP MSAs plugged into my Linux box, running OL-6.5. One in /dev/ttyACM0 and one in /dev/ttyACM1.

Occasionally, I need to restart these MSAs, but when I do restart it will sometimes get reassigned to /dev/ttyACM2 or 3. So far, the only way I have found of resetting them back to 0 and 1 is to restart the machine. But that takes over 5 minutes and I'm sure there must be a quicker way.

Thanks for any help you can provide :)

  • Use custom udev rules to give them your own (fixed) symlinks, like /dev/ttyHP0 and /dev/ttyHP1. – dirkt Dec 14 '16 at 12:30
  • My Arduino device can be found on /dev/ttyACM0 or /dev/ttyACM1 and so on. But there is a unique device file in /dev/serial/by-id. I'm pretty sure your MSA devices will get some unique device file, too. – mviereck Dec 14 '16 at 17:01

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