lvremove /dev/mapper/centos-home

lvextend -L 500G /dev/mapper/centos-root

mount /home

ls: cannot open directory .: Input/output error.

e2fsck -f /dev/mapper/vg_livecd-lv_home

Step:1 Umount the file system
# umount /home/

Step:2 check the file system for Errors using e2fsck command.
# e2fsck -f /dev/mapper/vg_livecd-lv_home

Step:3 Reduce or Shrink the size of /home to required size.
# resize2fs /dev/mapper/vg_livecd-lv_home 50G

Step:4 Reduce the size using lvreduce command.
# lvreduce -L 50G /dev/mapper/vg_livecd-lv_home

Step:5 Check the filesystem before mount
# e2fsck -f /dev/mapper/vg_livecd-lv_home

Step:6 Mount the file system and verify its size.
# mount /home

Step1: Check the free available space in the Volume group
#  vgdisplay < Volume-Group-Name>

Step2: Increase the size using Lvextend command
# lvextend -L +120G /dev/mapper/vg_livecd-lv_root

Step:3 Run the resize2fs command
# resize2fs /dev/mapper/vg_livecd-lv_root

Step:4 Verify Size
# df -Th