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vgchange -ay fedora_hostname. After that what is the output ofvgdisplay -v fedora_hostname?sda2UUID is reused in DM device names. Probably means: "This is the decrypted version of $UUID". That it is detected as PV but cannot be scanned may mean that the LVM metadata has been destroyed. If the LVs have been created without fragmentation then it should be possible to recreate them (with the correct size) to get access to the data. I am not familiar withtestdiskbut it should show you where the LVs are. You need to know their size and must (re)create them in the right order. IMHO this cannot cause (more) damage.