How to interper such output of lvmdiskscan?

Developer asked:

below I attached my output of lvmdiskscan command. I am surprised. What is partition in this case? I have exactly one physical disk. Could anyone explain meaning of this output? I thought that partition is equivalent to Logical volume, however in my case there is no logical volume.
So what I have whem I have no logical volumes? After all, I have one physical disk.

[[email protected] ~]$ sudo lvmdiskscan
  /dev/sda1 [     300,00 MiB] 
  /dev/sda2 [     455,06 GiB] 
  /dev/sda3 [     128,00 MiB] 
  /dev/sda4 [     225,60 GiB] 
  /dev/sda5 [     451,00 MiB] 
  /dev/sda6 [      17,11 GiB] 
  0 disks
  6 partitions
  0 LVM physical volume whole disks
  0 LVM physical volumes

[[email protected] ~]$ df -Th
System plików  Typ      rozm. użyte dost. %uż. zamont. na
dev            devtmpfs  7,8G     0  7,8G   0% /dev
run            tmpfs     7,8G  1,3M  7,8G   1% /run
/dev/sda2      ext4      447G  210G  215G  50% /
tmpfs          tmpfs     7,8G  327M  7,5G   5% /dev/shm
tmpfs          tmpfs     7,8G     0  7,8G   0% /sys/fs/cgroup
tmpfs          tmpfs     7,8G  100K  7,8G   1% /tmp
/dev/sda1      vfat      300M   26M  274M   9% /boot/efi
tmpfs          tmpfs     1,6G   16K  1,6G   1% /run/user/1000

My answer:

You have not made any LVM physical volumes, so you could not have any logical volumes placed in them, because they do not exist.

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