how to increase the size for devmappercentos-root?

To resize existing volumes, use: lvresize. Use “–help” see quick help for the command: lvresize --help.

It's an LVM so just do a: lvextend -L +938G /dev/mapper.centos-root resize2fs /dev/mapper/lv_root and the space should be usable by your root parition

Identify the root partition · Display the partition table with some information · Resize the partition · Check the change has been done correctly.

Step 1 - Copy /home Contents · Step 2 - Unmount the /home directory · Step 3 - Note the size of the home LVM volume · Step 4 - Remove the home LVM volume · Step 5 - ...

This started as documenting a procedure and may be used to resize partitions on a machine running CentOS 7.1 or as a guide for others.

Steps to Resize Root Partition in CentOS and Deleting Home Partition · Step 1: Copy contents of /home directory · Step 2: Unmount /home · Step 3 ...

There are three steps to make: alter your partition table so sda2 ends at end of disk; reread the partition table (will require a reboot) ...

The first thing is to check if you have free extents in your volume group, to do that, you will use: vgdisplay which will return details on the VG.

I wish to increase the CentOS root partition size from 50G to 100G, and decrease from 167G to 115G something. for acheive this I tried fdisk Utility way.

Learn how to expand root partition on CentOS 7 and AlmaLinux 8/9. Step-by-step guide for resizing partitions, LVM, and filesystems to ...