Proxmox vm reporting strange disk usage

[TobiasE]

Hello
On my vm df -h reports the following on a disk which using ls -la seems to be completly empty
tobias@Migration:~$ df -h

Filesystem Size Used Avail Use% Mounted on
udev 225M 0 225M 0% /dev
tmpfs 49M 1.9M 47M 4% /run
/dev/sda1 197G 2.7G 184G 2% /
tmpfs 245M 0 245M 0% /sys/fs/cgroup
tmpfs 49M 0 49M 0% /run/user/1000
/dev/sdb 225G 60M 213G 1% /mnt/Mountpoint

Note /dev/sdb which is a disk i migrated from another vm.
It reports 225G size which is correct.
It then goes on saying I am using 60M, which seems to be a little high given that it appears to be empty, so that is the first question, what is taking up 60M?
After that, it gets even stranger Available is only 213, so I have miraculously lost 12G to a wormhole somewhere? use % doesn't make sense either. Note however that for sda1 it reports correctly.
What am I missing?

 

[mbaldini]

No partition on that disk /dev/sdb? What file system are you using?

 

[TobiasE]

The device is working properly, I can create and remove files on it
the file system is ext4

 

[TobiasE]

I have the same problem if i create disks in the web gui and then add them to a host size 59G available 56G use 1%....

 

[TobiasE]

Ah, aperantly ext4 by default reserves 5% of the disk for root usage, that would explain the 12G.
The only space not accounted for then is the 60M used by an empty directory.....