Rescuing data from qcow2?

Question

LVM

Hello. The problem is the following. There are two hosts with Proxmox. On the first host, VM numbering is from 100-199 on the second from 200
There was a machine with Win (206) on which there was a 1C disk, it was in the local ZFS pool on host 2
There was a machine with Linux 101 was stored in the local ZFS pool on host 1
An external iscsi storage was connected on top of which an LVM partition was created, otherwise proxmox uses the entire LUN entirely for one virtual
machine Machine 206 moved there normally, after which it booted up and worked fine Virtual machine
disk 101 was also transferred to iscsi
During the transfer, it turned out that somehow then the disk 101 of the virtual machine overwritten the LV of the virtual machine 206 (while the size of the logical volume in LVM remained the same as it was originally created for 206)
Tried converting LVM 206 to qcow2 and mocking it with Testdisk. He seems to see some overlap of volumes on top of each other, but he refuses to restore anything, referring to the fact that the file system is damaged
Has anyone encountered similar things and are there any solutions to this problem?

Answer 1

well, if it is overwritten, then just restore from the backup,
look at the lvm backup, it seems to add the markup to some folder when you change it