$ sudo mkfs.btrfs -L fedora_repos /dev/vdb1
btrfs-progs v4.17.1 
See http://btrfs.wiki.kernel.org for more information.

Label:              fedora_repos
UUID:               a94fa10e-61f7-4b3c-b64a-c19b40c0750f
Node size:          16384
Sector size:        4096
Filesystem size:    1024.00GiB
Block group profiles:
  Data:             single            8.00MiB
  Metadata:         DUP               1.00GiB
  System:           DUP               8.00MiB
SSD detected:       no
Incompat features:  extref, skinny-metadata
Number of devices:  1
Devices:
   ID        SIZE  PATH
    1  1024.00GiB  /dev/vdb1