Few changes

[ich777]

• create lock file on script execution
• create function to to remove lockfile and kill subprocess if running
• trap exit from script
• check if environment variables are set for: mapping_method, CHECK_SMART& CHECK_SMART_INTERVAL otherwise use default values
• set CHECK_SMART to false if file /etc/unraid-release is found (unRAID specific since it check on it's own for smart errors)
• create variable LED_REFRESH_INTERVAL for while looop
• run smart check in subprocess
• put zpool-leds.sh in a variable to make the while loop a bit more efficient
• remove check for /sys/class/leds/$led/color and set color <- I'm not too sure about that one but this path should always exist correct?

[ich777]

The changes are untested since I have no hardware on hand but I tried to make it a bit more efficient and flexible, hope that's something you can work with. Of course if you don't like it or want to change something please change.

[miskcoo]

Thanks! I fixed some bugs in the smart checking loop.

It looks good, and I will try it in these days.

[ich777]

@miskcoo I've pushed two changes, feel free to change or remove them if they are not what you have in mind.

The plugin is basically done but I have to wait for a few changes that I can compile the first driver package: https://github.com/ich777/unraid-ugreenleds-driver