安装报错 : (Transaction check error) file /usr/lib/systemd/system/blk-availability.service from install of device-mapper-7:1.02.107-5.el7_2.1.x86_64 conflicts with file from package lvm2-7:2.02.105-14.el7.x86_64 file /usr/sbin/blkdeactivate from install of device-mapper-7:1.02.107-5.el ...
重启后显示界面如下: welcome to emergency mode!after logging in ,type “journalctl - xb” to view system logs,“systemctl reboot” to reboot ,“systemctl default” to try again to boot into default mode。 give root password for maintenance (?? Control-D???): 主要原 ...