Centos 6 / 7 system, adjust the home partition and expand the root partition

Sometimes, when installing the CentOS system, the default partition is used. In fact, the home partition is rarely used when building a website, so the home space is adjusted to the root.

Under SSH (centos 7 64-bit system):
1. Check the partition status:

 df -h

2. Unmount /home

 fuser -km /home/ umount /home

3. Delete the lv where /home is located

 lvremove /dev/mapper/centos-home

4. Expand the lv where /root is located and increase 800G

 lvextend -L +870G /dev/mapper/centos-root

5. Expand the /root file system

 xfs_growfs /dev/mapper/centos-root

Centos 6 uses the following command:

 resize2fs /dev/mapper/centos-root

6. Recreate the home lv

 lvcreate -L 3G -n /dev/mapper/centos-home

1. Creating a file system

    mkfs.xfs /dev/mapper/centos-home

8. Mount home

 mount /dev/mapper/centos-home

9. Finally, check if it is successful:

 df -h