Circlean/doc/NOTES.md

Usage Notes

• Don't plug in USB devices with a hub because there's no way to tell it which is source and target - its the first drive detected (top port) that is the source and the second (bottom port) is the target
• Don't turn it off without shutting down the system, when grooming is done it shuts down automatically: losing power while it's running can trash the OS on the SD cards because SD cards don't always like dirty shutdowns (ie power loss)
• Using a target usb stick that has a status light as long as the device has power is a really useful thing as there the other status lights on the groomer are less than indicative at times: because the 'OK' led on the RPi toggles on activity it can be off for a long time while processing something and only comes back on when that process finishes - hence why a USB that has some sort of LED activity when just plugged in (even if not reading or writing but while the USB port is powered) is helpful in determining when the process is finished - when the rPI is shutdown, the USB port power is shut off and that LED will also then be off on the USB device
• Use a larger target device as all zip files get unpacked and processed onto the target
• If you have an hdmi monitor plugged in you can watch what's happening for about 30 minutes until the rPI's power saving kicks in and turns off the monitor
• If only one usb stick is present at power up, it doesn't groom and looks like a normal rPi
• If you want to ssh into the RPi username is 'pi' password 'raspberry' as per defaults

Technical notes

• Groomer script is in /opt/groomer/ with the other required files and the ip address is 192.168.1.89
• The groomer process is kicked off in /etc/rc.local
• The heavy lifting is dispatched from /opt/groomer/groomer.sh
• All files processing is in filecheck.py

USB Ports

If you connect multiple keys to the RPi, they will be detected in this order:

First: Top left Second: Top right Third: Bottom left Forth: Bottom right

• As long as the source key (sda) is connected to the top left port, the destination (sdb) can be connected on any other port.