How to view Linux mounted disk

Usually we use the command to view the disk mounted in the Linux system, in fact, in addition to this method, there are many ways to view the Linux mounted disk, the following small series will introduce you How to view the mounted disk in Linux.

The first method: using the df command, for example:

code is as follows:

orientalson: /home # df

Filesystem 1K- Blocks Used Available Use% Mounted on

/dev/sda2 15213032 8043668 7169364 53% /

udev 514496 104 514392 1% /dev

/dev/mapper/vg_test- Lv_test

511980 32840 479140 7% /home/mt

orientalson:/home #

The mount point /home/mt shown above and the volume she mounts are not On the same line, using shell script analysis is very cumbersome.

The second method: use the mount command, mount -l, the drawback of this method is that there is no size of the volume, but the mount point and the mounted volume are on the same line. For example:

The code is as follows:

orientalson:/home # mount -l

/dev/sda2 on /type reiserfs (rw,acl,user_xattr) []

proc on /proc type proc (rw)

sysfs on /sys type sysfs (rw)

debugfs on /sys/kernel/debug type debugfs (rw)

udev on /dev type tmpfs (rw)

devpts on /dev/pts type devpts (rw,mode=0620,gid=5)

securityfs on /sys/kernel/Security type securityfs (rw)

/dev/mapper/vg_test-lv_test on /home/mt type reiserfs (rw) []

orientalson:/home #

Three methods: look at the file /etc/mtab. The principle is that every time a new volume is mounted, the file will be updated basically, so you can use this file to view the mount point and the volume you are working on. This method is slightly clearer than mount -l, but sometimes it is not reliable.

The code is as follows:

orientalson:/home # cat /etc/mtab

/dev/sda2 /reiserfs rw,acl,user_xattr 0 0

Proc /proc proc rw 0 0

sysfs /sys sysfs rw 0 0

debugfs /sys/kernel/debug debugfs rw 0 0

udev /dev tmpfs rw 0 0

devpts /dev/pts devpts rw,mode=0620,gid=5 0 0

securityfs /sys/kernel/security securityfs rw 0 0

/dev/mapper /vg_test-lv_test /home/mt reiserfs rw 0 0

orientalson:/home #

The above has basically said that this file will be updated, but this problem is not always updated. If the -n option is used when mounting, the volume information will not be newly mounted in the /etc/mtab file.

The code is as follows:

orientalson:/home # umount /home/mt

orientalson:/home # mount -n /dev/vg_test/lv_test /home/mt< Br>

orientalson:/home # cat /etc/mtab

/dev/sda2 /reiserfs rw,acl,user_xattr 0 0

proc /proc proc rw 0 0

sysfs /sys sysfs rw 0 0

debugfs /sys/kernel/debug debugfs rw 0 0

udev /dev tmpfs rw 0 0

devpts /dev/Pts devpts rw,mode=0620,gid=5 0 0

securityfs /sys/kernel/security securityfs rw 0 0

orientalson:/home #

The above is the view Linux mount disk method, the use of df command to view the mounted disk is the most practical and convenient method, relatively speaking, the latter two methods have some limitations.