RPI Client with LVM root partition is not seen by the server

I have created a root partition with LVM on a Raspberry Pi. This is also recognized during the urbackup client’s install process. Unfortunately, only one file backup is suggested on the server side. The image backup is displayed as unsupported. The deug logging unfortunately says nothing about it

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What can I do to find the mistake?

Hello

urbackup won’t do image backup on linux.
what you ll get is a snapshot before backup

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yes , as i said , all of these can support snapshot for data consistency, but dattdb cannot be used for volume backups.

Hello orogor,

thank you very much for your explaining.