可看到如下结果:
文件系统 类型 容量 已用 可用 已用% 挂载点
/dev/mapper/cl-root xfs 37G 37G 20K 100% /
devtmpfs devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs tmpfs 7.8G 84K 7.8G 1% /dev/shm
tmpfs tmpfs 7.8G 782M 7.0G 10% /run
tmpfs tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/sda1 xfs 1014M 173M 842M 18% /boot
/dev/sdb1 ext3 197G 22G 166G 12% /data
tmpfs tmpfs 1.6G 16K 1.6G 1% /run/user/42
overlay overlay 37G 37G 20K 100% /var/lib/docker/overlay/d73573ecc6b0a31d9d76e7ff47c33e93a00ecefb749430f100cf29abbe2cfb29/merged
overlay overlay 37G 37G 20K 100% /var/lib/docker/overlay/032feba497f9b7ab8700b95514bfbbcdabe39ba99c8e1b0f9d8721c27e502532/merged
shm tmpfs 64M 0 64M 0% /var/lib/docker/containers/9f08072b76f5183884aa5dd18b94fd2d66ebfd48db55252ad3b720d133e2e551/shm
overlay overlay 37G 37G 20K 100% /var/lib/docker/overlay/e0c52042f0bf4275873f6dedacaf072d7a35fcac61e80755ef6e84cf0fd55a38/merged
shm tmpfs 64M 0 64M 0% /var/lib/docker/containers/a62805d95f9c6a061faa93c1eb2f732c284d77d27d936e759912b83aca88ea19/shm
overlay overlay 37G 37G 20K 100% /var/lib/docker/overlay/e24aa22cee58a01e62b90e4f206d4b156e7a5c6e9b8ef66970bb1a81478fc6b9/merged
shm tmpfs 64M 0 64M 0% /var/lib/docker/containers/a3c97e2a8652c75298feb49c3ad0092492e1eb4624bdc4251cb07b26a9127c4b/shm
overlay overlay 37G 37G 20K 100% /var/lib/docker/overlay/f13ae774c4aaf009a64faecb71041176d7c1bcfbf97c1d07d3ca2c8b2f0eea5a/merged
shm tmpfs 64M 0 64M 0% /var/lib/docker/containers/f4cd372bde4ae039a2d1c97631b8227953cc9cfc3bfee01fa2e91b9801d3d51d/shm
tmpfs tmpfs 1.6G 0 1.6G 0% /run/user/0
du -sh ./* | grep G | awk '{print $2}'