硬盘操作常用命令

lsblk

[root@ceph1 openssl-OpenSSL_1_1_1a]# lsblk
NAME         MAJ:MIN RM    SIZE RO TYPE MOUNTPOINT
sdb            8:16   0    3.7T  0 disk
|-sdb4         8:20   0     30G  0 part
|-sdb2         8:18   0     10G  0 part
|-sdb7         8:23   0  130.4G  0 part
|-sdb5         8:21   0     30G  0 part
|-sdb3         8:19   0     30G  0 part
|-sdb1         8:17   0     10G  0 part
`-sdb6         8:22   0  558.8G  0 part /sdb6
loop0          7:0    0    6.9G  0 loop /mnt
sda            8:0    0    3.7T  0 disk
|-sda4         8:4    0 1007.5K  0 part
|-sda2         8:2    0      1G  0 part /boot
|-sda3         8:3    0    3.7T  0 part
| |-cla-swap 253:1    0      4G  0 lvm  [SWAP]
| |-cla-home 253:2    0    3.6T  0 lvm  /home
| `-cla-root 253:0    0     50G  0 lvm  /
`-sda1         8:1    0    200M  0 part /boot/efi

dmsetup

[root@ceph1 openssl-OpenSSL_1_1_1a]# dmsetup ls
cla-home        (253:2)
cla-swap        (253:1)
cla-root        (253:0)

lvm

[root@ceph1 openssl-OpenSSL_1_1_1a]# pvs
  PV         VG  Fmt  Attr PSize  PFree
  /dev/sda3  cla lvm2 a--  <3.64t    0
[root@ceph1 openssl-OpenSSL_1_1_1a]# vgs
  VG  #PV #LV #SN Attr   VSize  VFree
  cla   1   3   0 wz--n- <3.64t    0
[root@ceph1 openssl-OpenSSL_1_1_1a]# lvs
  LV   VG  Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  home cla -wi-ao----  3.58t
  root cla -wi-ao---- 50.00g
  swap cla -wi-ao----  4.00g

uuidgen

[root@ceph1 openssl-OpenSSL_1_1_1a]# uuidgen
e72e3bbf-d00f-4d00-97fd-1ea642f19601

blkid

[root@ceph1 openssl-OpenSSL_1_1_1a]# blkid -o list
device                                              fs_type         label            mount point                                             UUID
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
/dev/mapper/cla-root                                 xfs                              /                                                        a2a52403-13cf-4d72-9aaf-0f40904e1e93
/dev/sda3                                            LVM2_member                      (in use)                                                 G2VCKX-p2AV-4qhm-iTQx-CkMb-VlQw-qjEBDR
/dev/sda1                                            vfat                             /boot/efi                                                DF98-EE86
/dev/sda2                                            xfs                              /boot                                                    7ad1997d-2ba9-464b-8586-b3430a010396
/dev/sdb1                                            xfs                              (not mounted)                                            1d1e3dab-e2fe-433d-a7f5-7fc1bd756f22
/dev/sdb2                                            xfs                              (not mounted)                                            eb0de806-8662-466c-9653-ea3be5bd22fb
/dev/sdb3                                            xfs                              (not mounted)                                            7d9c1d46-c213-467c-8429-5e2c4a8ba63e
/dev/sdb4                                            xfs                              (not mounted)                                            62131617-5d1a-4b66-a7b4-738391d236bd
/dev/sdb5                                            xfs                              (not mounted)                                            711e3c21-059b-4468-b87c-18c98cbab551
/dev/sdb6                                            xfs                              /sdb6                                                    52185ac6-8934-458d-8950-462c2b5bd858
/dev/mapper/cla-swap                                 swap                             <swap>                                                   960c2154-ef85-4b93-85e4-a5f55451cd89
/dev/mapper/cla-home                                 xfs                              /home                                                    316d173f-05f3-4440-aca2-cf95f70f2845
/dev/loop0                                           iso9660         CentOS 7 aarch64 /mnt                                                     2017-09-10-13-10-43-00
/dev/sda4                                                                             (not mounted)
/dev/sdb7                                                                             (not mounted)