Support to repair of corrupted thin pool metadata is needed when t-p-m gets broken. For this case user may try automated repair via 'lvconvert --repair vg/pool' or low-level manual repair. In this case user may swap t-p-m volume out of thin-pool LV via 'lvconvert --poolmetadata swapLV vg/pool' and run manual recover operation with the use of thin_check, thin_dump, thin_repair commands. Once the user has repaired t-p-m volume ready, he could swap back such volume back. Although this low-level repair should be only used when user is fully aware of thin-pool functionality.