So, there is this device block which has 654G of total size, of those 579G are being used, but only 42 is Avail (it should be 65G available!)
$ df -h /dev/mapper/cryptdata
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/cryptdata 654G 579G 42G 94% /data
$ du -sh /data
579G /data
What is wrong here? I suspect maybe it has to do with Filesystem integrity or LVM (Logical Volume Manager).
What I need is to correct this error so it should have 65G available, but I don't know how.