フォーマットの形式や、UUID なども確認できる。

# blkid
/dev/sdd1: UUID="8162486b-1df7-4971-9361-e5c42a4ba7d7" UUID_SUB="05effc12-69e7-4228-937e-3bdf320ae6b9" BLOCK_SIZE="4096" TYPE="btrfs" PARTLABEL="Linux filesystem" PARTUUID="10092705-14f0-485a-8c70-84e9be71263c"
/dev/sdb1: UUID="dba7d347-2622-4f3f-9acf-a65fdb91dfe3" UUID_SUB="765f97fc-9043-460f-a9ba-b9fb49da8cd5" BLOCK_SIZE="4096" TYPE="btrfs" PARTUUID="0b2328f7-6b7b-ca4f-9c4b-9245d9b8bcec"
/dev/sdc1: LABEL="WD-500GiB" UUID="0e604e20-9527-41aa-a8a1-fe7bb120fb58" UUID_SUB="c367fcb2-c5a9-424e-9c5e-2dc65f477eb5" BLOCK_SIZE="4096" TYPE="btrfs" PARTUUID="06b350e0-502d-4973-8b2e-29f838061d4d"
/dev/sda2: LABEL="fedora_localhost-live" UUID="9814235f-edf9-4966-9ee6-146603b06963" UUID_SUB="ff6c8736-a23f-4116-b37a-8620ce2f8abf" BLOCK_SIZE="4096" TYPE="btrfs" PARTUUID="d6ab6785-02"
/dev/sda1: UUID="C05E-77B1" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="d6ab6785-01"
/dev/zram0: LABEL="zram0" UUID="2576080c-7876-4dfb-9f44-572b82ad1e2c" TYPE="swap"

ディスク一覧の状態を確認

マウント状態も確認できる。

# lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda      8:0    0 476.9G  0 disk 
├─sda1   8:1    0     1G  0 part /boot/efi
└─sda2   8:2    0 475.9G  0 part /
sdb      8:16   0   2.7T  0 disk 
└─sdb1   8:17   0   2.7T  0 part /home
sdc      8:32   0 465.8G  0 disk 
└─sdc1   8:33   0 465.8G  0 part /var/lib/libvirt/images
sdd      8:48   0   1.8T  0 disk 
└─sdd1   8:49   0   1.8T  0 part /home/KanraKara/2TB
sde      8:64   1     0B  0 disk 
sr0     11:0    1  1024M  0 rom  
zram0  251:0    0     8G  0 disk [SWAP]

フォーマット

btrfs でフォーマット

# mkfs.btrfs -f /dev/sdd1
btrfs-progs v6.15
See https://btrfs.readthedocs.io for more information.

Performing full device TRIM /dev/sdd1 (1.82TiB) ...
NOTE: several default settings have changed in version 5.15, please make sure
      this does not affect your deployments:
      - DUP for metadata (-m dup)
      - enabled no-holes (-O no-holes)
      - enabled free-space-tree (-R free-space-tree)

Label:              (null)
UUID:               8162486b-1df7-4971-9361-e5c42a4ba7d7
Node size:          16384
Sector size:        4096	(CPU page size: 4096)
Filesystem size:    1.82TiB
Block group profiles:
  Data:             single            8.00MiB
  Metadata:         DUP               1.00GiB
  System:           DUP               8.00MiB
SSD detected:       no
Zoned device:       no
Features:           extref, skinny-metadata, no-holes, free-space-tree
Checksum:           crc32c
Number of devices:  1
Devices:
   ID        SIZE  PATH     
    1     1.82TiB  /dev/sdd1

自動マウント

# cat /etc/fstab 

#
# /etc/fstab
# Created by anaconda on Mon Jul 18 09:21:09 2022
#
# Accessible filesystems, by reference, are maintained under '/dev/disk/'.
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info.
#
# After editing this file, run 'systemctl daemon-reload' to update systemd
# units generated from this file.
#
UUID=9814235f-edf9-4966-9ee6-146603b06963 /                       btrfs   subvol=root,compress=zstd:1 0 0
UUID=C05E-77B1          /boot/efi               vfat    umask=0077,shortname=winnt 0 2
UUID=dba7d347-2622-4f3f-9acf-a65fdb91dfe3 /home                   btrfs   subvolid=5      0 0
UUID=0e604e20-9527-41aa-a8a1-fe7bb120fb58	/var/lib/libvirt/images				btrfs	defaults 0 2
UUID=8162486b-1df7-4971-9361-e5c42a4ba7d7 /home/KanraKara/2TB btrfs defaults 0 2