Ceph Raw Storage shows used space when there are no pools.

Azhdar

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Hello, dear forum users.
I installed ceph in k8s using rook for testing purposes.

Everything went up fine.
Then I created a cephfs pool for my app.
Then I deleted the app from k8s and cephfs pool and its metadata.

Now there are no pools in ceph.
But ceph tells me that "raw storage" use 0.56% space.

I don't quite understand what this data is and how to remove it.
Could you explain the situation?
Exactly what is this data for, that is assigned to a place?
How can I remove them to clear the space?
I would be very grateful for your advice.
Thank's in advance.

Below is the ceph df detail command info.

```
[[email protected] /]# ceph df detail
--- RAW STORAGE ---
CLASS SIZE AVAIL USED RAW USED %RAW USED
hdd 300 GiB 298 GiB 1.7 GiB 1.7 GiB 0.56
TOTAL 300 GiB 298 GiB 1.7 GiB 1.7 GiB 0.56

--- POOLS ---
POOL ID PGS STORED (DATA) (OMAP) OBJECTS USED (DATA) (OMAP) %USED MAX AVAIL QUOTA OBJECTS QUOTA BYTES DIRTY USED COMPR
POOL ID PGS STORED (DATA) (OMAP) OBJECTS USED (DATA) (OMAP) %USED MAX AVAIL QUOTA OBJECTS QUOTA BYTES DIRTY USED COMPR
UNDER COMPRdevice_health_metrics 1 1 0 B 0 B 0 B 1 0 B 0 B 0 B 0 94 GiB N/A N/A 1 0 B
0 B

```
 
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