Perform drive failure check

[Valeri4n]

If a drive fails, it may become unmounted or simply disappear. This check should look for drives that are not mounted that should be, or identify drives that no longer appear to the system so they can be investigated.

This will create a baseline drive file to check against as the drive monitor script runs

• If baseline file doesn't exist, create one, including adding drive-size file to new drives
• Create new baseline file with flag, including adding drive-size file to new drives
• Drives should have label that indicates location
• Capture name, label, serial, size, mountpoint
• Verify drive is present on each loop
• Verify drive is mounted by checking for the presence of the drive-size file every 10 minutes