# make-bcache -C /dev/vdf
Device /dev/vdf already has a non-bcache superblock, remove it using wipefs and wipefs -a
# wipefs -a /dev/vdf
4 bytes were erased at offset 0x27fff0000 (linux_raid_member)
they were: fc 4e 2b a9
# make-bcache -C /dev/vdf
UUID: 1f8bc71f-0106-4da5-b781-5de7b1517706
Set UUID: 7bfb0d17-b6d0-4fe9-942b-a1c75a0893ab
version: 0
nbuckets: 20480
block_size: 1
bucket_size: 1024
nr_in_set: 1
nr_this_dev: 0
first_bucket: 1
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 254:0 0 20G 0 disk
└─vda1 254:1 0 20G 0 part /
vdb 254:16 0 50G 0 disk
└─bcache1 250:1 0 50G 0 disk
vdc 254:32 0 50G 0 disk
└─bcache0 250:0 0 50G 0 disk
vdd 254:48 0 50G 0 disk
└─bcache2 250:2 0 50G 0 disk
vde 254:64 0 10G 0 disk
├─bcache0 250:0 0 50G 0 disk
├─bcache1 250:1 0 50G 0 disk
└─bcache2 250:2 0 50G 0 disk
vdf 254:80 0 10G 0 disk
vdg 254:96 0 20G 0 disk
vdh 254:112 0 30G 0 disk
└─bcache3 250:3 0 30G 0 disk
nbsram_a 251:0 0 16M 0 disk
nbsram_b 251:16 0 16M 0 disk
nbsram_c 251:32 0 16M 0 disk
# ls /sys/fs/bcache/ -la
total 0
drwxr-xr-x 4 root root 0 May 22 17:23 .
drwxr-xr-x 6 root root 0 May 22 17:21 ..
drwxr-xr-x 7 root root 0 May 22 17:26 7681dbb3-6558-4e60-b062-5fbb648f6665
drwxr-xr-x 7 root root 0 May 22 21:05 7bfb0d17-b6d0-4fe9-942b-a1c75a0893ab
--w------- 1 root root 4096 May 22 17:57 register
--w------- 1 root root 4096 May 22 21:05 register_quiet
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