The first method: use the df command, for example:
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 is not on the same line as the volume she mounts, and it is very troublesome to use shell script analysis.
The second method: use the mount command, mount -l, the disadvantage of this method is that there is no volume size, but the mount point and the mounted volume are on the same line. E.g:
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 #
The third method: View the file /etc/mtab. The principle is that this file is basically updated every time a new volume is mounted, so naturally you can view the mount point and the suspended volume through this file. This method is slightly cleaner than mount -l, however, it is sometimes unreliable.
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 #
It has been said above that basically this file will be updated, but not always the issue. If the -n option is used when mounting, there will be no information about the newly mounted volume in the /etc/mtab file.
orientalson:/home # umount /home/mt orientalson:/home # mount -n /dev/vg_test/lv_test /home/mt 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 #