hostnamectl set-hostname name “newname”
hostname name “newname”

find / -user root -perm -4000 -print 2>/dev/null
find / -perm -u=s -type f 2>/dev/null
find / -user root -perm -4000 -exec ls -ldb {} \;

1. Log into the server’s emergency mode by enter your root password
2. nano /etc/fstab (remove or comment out the missing volume
3. reboot

lvrename vg1 lvol1 lvol0

vgrename /dev/vg02 /dev/my_volume_group