So it has no problem with initrd-udevadm-cleanup-db.service. Is the problematic device from network such as iscsi? If it is not, more information is needed: - fstab - lsblk - /etc/lvm/lvm.conf - systemctl status lvm2-lvmetad lvm2-pvscan@major:minor.service (the PV's major and minor number) Thanks!