Image Backup on Centos 7 are not supported

Verifying archive integrity… All good.
Uncompressing UrBackup Client Installer for Linux 100%
Installation of UrBackup Client 2.3.4 to /usr/local … Proceed ? [Y/n]
Uncompressing install data…
Assuming RedHat (derivative) system
Detected systemd
Detected architecture x86_64-linux-glibc
Installed daemon configuration at /etc/sysconfig/urbackupclient…
Info: Restoring from web interface is disabled per default. Enable by modifying /etc/sysconfig/urbackupclient.
Installing systemd unit…
Created symlink from /etc/systemd/system/ to /usr/lib/systemd/system/urbackupclientbackend.service.
Starting UrBackup Client service…
Successfully started client service. Installation complete.
+Detected EL/RH 7. Dattobd supported
-Detected no btrfs filesystem
+Detected LVM volumes
Please select the snapshot mechanism to be used for backups:

  1. dattobd volume snapshot kernel module from
  2. LVM - Logical Volume Manager snapshots
  3. Use no snapshot mechanism
    Configured snapshot mechanism via /usr/local/etc/urbackup/snapshot.cfg

Manually LVM snapshot are creating, but on urbackup server image backup are not supported. On Windows servers image backups are good.

lsmod | grep dattobd
dattobd 53544 0

Module are load. File backup is done, but in web-interface “Image backup Not supported”

I understand. Linux client do not support image backup like Windows. Linux client support snapshots for file backup like Windows VSS. Right?