Fix issues where cryptsetup would fail to unmount

There were occasions where removing the backup drive would confuse luks
and prevent re-mounting. This fixes the issue by attempting to luks
close and open the drive before mounting, thereby correcting any issues
where the drive would stick.

README.md

@@ -26,6 +26,8 @@ ansible-playbook -i hosts --ask-become-pass playbooks/pi.yaml
 
 Run the manjaro playbook
 
+NOTE: Restore home directory and __REBOOT__ first
+
 ```bash
 ansible-playbook --ask-become-pass ansible/setup-full.yml
 ```
@@ -92,4 +94,10 @@ sudo mkdir -p /mnt/backup0
 
 # Add to fstab
 echo '/dev/mapper/backup0 /mnt/backup0 btrfs defaults,noatime,compress=zstd 0 0' > /etc/fstab
+
+# mount
+sudo cryptsetup luksOpen /dev/disk/by-uuid/1d7ce570-e695-47a0-9dda-5f14b5b20e21 backup0 --key-file=/home/ducoterra/.lukskeys/backup0
+
+# close (or fix issues)
+sudo cryptsetup luksClose backup0
 ```