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lvm
Resize
Increase Logical Volume Size
Increase by 1GB
lvextend -L +1G /dev/centos/home
Decrease Logical Volume Size
Decrease by 1GB
lvreduce -L 1G /dev/centos/var
VM Related
mount lvm disk on partition
kpartx -av /dev/volKVM/kvm106_img mount /dev/mapper/volKVM-kvm106_img1 /mnt
unmount lvm disk
umount /mnt kpartx -dv /dev/volKVM/kvm106_img