Windows 11 and ReFS partitions

❯ refsutil
---- Commands Supported ----
fixboot         Repair boot sectors
leak            Leak Detection and Fixing
salvage         Salvage operations for corrupt volume
triage          Handle corruptions
streamsnapshot  Stream snapshot management
compression     Volume compression support
dedup           Dedup equivalent clusters
iometrics       Volume IO metrics tracking

refsutil compression /q D:

refsutil compression /c /f LZ4 /e 6 D:

refsutil compression /c /f NONE D:

refsutil dedup /s D:
D:\ is an ReFS volume.
Using 4096 byte chunk size
Requested maximum 50% CPU utilization
Creating weak references for all candidate ranges.

❯ refsutil dedup /s F:
F:\ is an ReFS volume.
Using 4096 byte chunk size
Requested maximum 50% CPU utilization
Creating weak references for all candidate ranges.
All candidates processed.
Estimating space savings on F:\...

Error counts:
Hash index update errors: 0
Hash index update transaction errors: 0
Maximum Tx retries due to log file full: 0
FSCTL_DUPLICATE_CLUSTER errors: 0
Source has maximum allowed references, no longer dedupable: 0
Source invalid errors: 0
Target invalid errors: 0
Not supported errors: 0
VCN->LCN mapping changed errors: 0

Undedupable data counts:
Stream reserved LCNs: 0
Read only LCNs: 0
Invalid (allocated, but undefined data) LCNs: 0

Processed file ranges: 0
Bytes deduped during optimization: 0.00 B
Processed data size (logical): 0.00 B
Total shared data: 0.00 B
Space savings percent (no compression): 0%