linux filesystem

[260254@w26-260254 ~]$ df
文件系统                     1K-块      已用       可用 已用% 挂载点
/dev/mapper/centos-root   52403200   9483000   42920200   19% /
devtmpfs                  16337272         0   16337272    0% /dev
tmpfs                     16354528    140240   16214288    1% /dev/shm
tmpfs                     16354528     18380   16336148    1% /run
tmpfs                     16354528         0   16354528    0% /sys/fs/cgroup
/dev/mapper/centos-home   59494008   1630876   57863132    3% /home
/dev/sda1                   508588    281796     226792   56% /boot
tmpfs                      3270908        68    3270840    1% /run/user/1000
/dev/sdb1               1922720024 116548080 1708479884    7% /run/media/260254/dde9f86c-29a3-45bf-850a-5d24236399e0
[260254@w26-260254 ~]$ sudo mount |grep sdb
/dev/sdb1 on /run/media/260254/dde9f86c-29a3-45bf-850a-5d24236399e0 type ext4 (rw,nosuid,nodev,relatime,seclabel,data=ordered,uhelper=udisks2)
[260254@w26-260254 ~]$ vim /etc/fstab
[260254@w26-260254 ~]$ lsof /dev/mapper/centos-home
COMMAND     PID   USER   FD   TYPE DEVICE SIZE/OFF      NODE NAME
nautilus    545 260254  cwd    DIR  253,2     4096       131 /home/260254
nautilus    545 260254  mem    REG  253,2    32768 201399766 /home/260254/.local/share/gvfs-metadata/trash:-e89df342.log
nautilus    545 260254  mem    REG  253,2    32768 201399715 /home/260254/.local/share/gvfs-metadata/uuid-6025cb7b-61e9-4064-9ad3-b6f7da720092-3c14ab56.log

mount