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03/06/2019

Linux Change Disk Label Name on EXT2 / EXT3 / EXT4 File Systems



How can I modify partition labels on a Linux operating systems? How to change disk name on the ext4 file system on a Ubuntu Linux using command line?

You need to use the e2label command to set a text label to your disk drive partitions and then refer to them in the /etc/fstab file. The e2label command must be run as root user. Normal users can not modify partition label for security reasons. [donotprint][/donotprint]

Syntax

Use the following syntax to display or change the filesystem label on the ext2, ext3, or ext4 filesystem located on device.

e2label /dev/device
e2label /dev/device new-label-name-here

Label limitations

Ext2 filesystem labels can be at most 16 characters long; if new-label-name-here is longer than 16 characters, e2label will truncate it and print a warning message on screen.

View the label of partition

To see the label of partition called /dev/sda5, type:

e2label /dev/sda5

Sample outputs:

Fig.01: View the label of partition

Modify partition labels / Change disk name

To add or change the label of partition /dev/sda1 to “Webserver”, enter:
$ sudo e2label /dev/sda1 Webserver
OR
# e2label /dev/sda1 Webserver
To verify new changes, type:

# e2label /dev/sda1 
Webserver

Mount file system by label at Linux server boot time

The /dev/sda1 partition can be mounted by label at server boot time at /wwwdata location. Edit the /etc/fstab file, enter:
$ sudo vi /etc/fstab
Set or update it as follows:

LABEL=Webserver /wwwdata              ext4    defaults        1 2

Save and close the file. You can also use the mount command as follows:

mount -L label_name_here /path/to/mount/point

Posted by: SXI ADMIN

The author is the creator of nixCraft and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.

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