ERROR: Backup of VM 100 failed – lvcreate snapshot ‘pve/snap_vm-100-disk-1_vzdump’ error: Logical Volume «snap_vm-100-disk-1_vzdump» already exists in volume group «pve»
Find the solution:
1. show this by Volume group by using command :
#: lvdisplay
2. remove this lv by:
#: lvremove /dev/pve/snap_vm-100-disk-1_vzdump