在机器启动期间出现 dm-event.socket 错误

Question

启动时出现以下 systemd 错误。操作系统为ubuntu 20.04LTS。此错误可能已存在（我 3 天前升级了操作系统）：

 systemd[1]: dm-event.socket: Socket service dm-event.service not loaded, refusing.
 systemd[1]: Failed to listen on Device-mapper event daemon FIFOs.
 systemd[1]: Dependency failed for Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress >
 systemd[1]: lvm2-monitor.service: Job lvm2-monitor.service/start failed with result 'dependency'.
 systemd[1]: lvm2-lvmpolld.socket: Socket service lvm2-lvmpolld.service not loaded, refusing.
 systemd[1]: Failed to listen on LVM2 poll daemon socket.

这个错误有什么影响？我们如何修复这个错误？