CENTOS Boot up Issues - madhusudana30/AlternativeJPAForWebSphere GitHub Wiki

In my case, this helped.

sudo xfs_repair -v -L /dev/dm-0

My node failed to boot after power outage and got the error “Failed to mount /sysroot” and entered into emergency mode.

Mount and unmount failed so just went ahead to run with -L option and that helped my node boot up again.