查看所有设备挂载情况
[root@wls ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part
├─centos-root 253:0 0 17G 0 lvm /
└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 1G 0 disk
[root@wls ~]# lsblk -f
NAME FSTYPE LABEL UUID MOUNTPOINT
sda
├─sda1 xfs 5e9f42fd-061d-4d5b-aa7e-0c3f8bb1f227 /boot
└─sda2 LVM2_member QO1RBA-Mm3t-3qao-av1z-OB0h-D1Ja-C7UJS5
├─centos-root xfs a497f657-1d83-43eb-b292-bf53570e0a13 /
└─centos-swap swap b7b690d6-a5db-43a1-bf1e-30e4b3915215 [SWAP]
sdb
磁盘情况查询
- df - report file system disk space usage
- du - estimate file space usage
查询系统整体磁盘使用情况
df -h 默认当前路径
[root@wls ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 475M 0 475M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 7.8M 479M 2% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/mapper/centos-root 17G 4.6G 13G 28% /
/dev/sda1 1014M 137M 878M 14% /boot
overlay 17G 4.6G 13G 28% /var/lib/docker/overlay2/280a432a937e26bea770e891a618ee22cf28aa174b7b3ae59c38e1d157b556fb/merged
overlay 17G 4.6G 13G 28% /var/lib/docker/overlay2/74f70700846825af7155a53495eb743e45e11993f0cd8e0ea815ae538bc73a74/merged
tmpfs 98M 0 98M 0% /run/user/0
/dev/sdb1 991M 2.6M 922M 1% /newdisk
查询指定目录的磁盘占用情况
du -h [目录绝对绝对路径]
[root@wls ~]# du -h /newdisk
16K /newdisk/lost+found
24K /newdisk
查询/opt目录磁盘占用情况，深度为1
[root@wls opt]# ls -l /opt
total 0
drwx--x--x. 4 root root 28 Jun 24 19:21 containerd
drwxr-xr-x. 3 root root 37 Jun 25 16:08 dev
-rw-r--r--. 1 root root 0 Aug 1 08:03 test.txt
[root@wls ~]# du -ha --max-depth=1 /opt
0 /opt/containerd
8.0K /opt/dev
0 /opt/test.txt
8.0K /opt
[root@wls ~]# du -hac --max-depth=1 /opt
0 /opt/containerd
8.0K /opt/dev
0 /opt/test.txt
8.0K /opt
8.0K total
