plot-mover.sh - Drive full check is not accurate for large drives.

[johnbiggs]

Drive full at 100% is not sufficient. On my drives the drive reports 100% full although there is room for one more plot.

/dev/sdb1 13T 13T 121G 100% /mnt/chia/chia-6
/dev/sdd1 13T 13T 121G 100% /mnt/chia/chia-8
/dev/sde1 13T 13T 121G 100% /mnt/chia/chia-9

Fix is looking for XXG in free space instead of 100% usage to determine fullness. Not foolproof because 99G could be considered full but plot could be much less with compression. But much better for my situation as all my drives (8T, 12T, 14T, 16T) report over 100G while usage is 100%.

- if ! df -h "$drive" | awk '{print $5}' | tail -1 | grep -q "^100"; then
+ if ! df -h "$drive" | awk '{print $4}' | tail -1 | grep -q "^[0-9]\{2\}G$"; then