Increase the Root size and unmount the Home directory
So, here I have mention about to unmount and extend root directory.
So, if we have unmount the /home directory there will be a one issues will be generated.
Linux into Emergency / Recovery mode
All the Linux file systems are stored in the root partition. Sometimes we feel the provided storage is enough for the system but eventually, we need more storage at the root. So, In this post, I will share the steps to resize or extend the root partition. This method is also applied to RHEL.
Change into Normal Mode click here follows according to the methods https://www.querypanel.com/linux-into-emergency-recovery-mode/
How to increase centos Root Size
CentOS 8 Extend Root Partition
Increase Root Size in Centos
Expand the disk on the host
Before we get started with the tutorial, you will need to meet the following requirements.
unmount the home directory. To view the location of the home partition, use the df command as
df -h
[root@vre ~]# umount /dev/mapper/cl-home
If you can check in screen cl-home have 22G so I am going to use cl home 20 GB for extending in Root directory.
Extending volume is successfully done
[root@vre ~]# lvreduce -L 20G /dev/mapper/cl-home
So now adding this rest of GB in root
First, I am going to test if extending to root directory what will be the output
[root@vre ~]# lvextend -t -r -l+100%FREE /dev/mapper/cl-root
Testing volume is done successfully
So next step implements in root directory
[root@vre ~]# lvextend -r -l+100%FREE /dev/mapper/cl-root
[root@vre ~]# lvextend -r -l+100%FREE /dev/mapper/cl-root
After changes check the current amount of data in Root
[root@vre ~]# lvs
