如何在fedora中禁用“设备映射器”警告

我是一个基于x86的嵌入式平台。完全脱离NFS运行。我最近将fc23移植到它上面......但每次我发出重启命令时都会收到此警告消息。

[  OK  ] Stopped Login Service.
[  OK  ] Stopped LSB: Bring up/down networking.
         Stopping SYSV: Init script for live imag[ 1660.087787] watchdog watchdog0: watchdog did not stop!
dracut Warning: Killing all remaining processes
device-mapper: remove ioctl on No failed: No such device or address
Command failed
device-mapper: remove ioctl on devices failed: No such device or address
Command failed
device-mapper: remove ioctl on found failed: No such device or address
Command failed
device-mapper: remove ioctl on No failed: No such device or address
Command failed
device-mapper: remove ioctl on devices failed: No such device or address
Command failed
device-mapper: remove ioctl on found failed: No such device or address
Command failed
device-mapper: remove ioctl on No failed: No such device or address
Command failed ...

（等等几秒钟）虽然它重新启动并在此之后正常工作，但这很烦人。如果没有使用设备映射器有没有办法？

[root@localhost ~]# dmsetup status
No devices found
[root@localhost ~]#

这是否意味着device_mapper未被使用且可以被禁用？我不知道我需要在这里提供什么其他细节..（相当新的linux ..）