Apparently, just fine. On paper, do a quick check and clean on mount. There are mount options for full check, degraded and recovery modes. About the paper https

Apparently, just fine. On paper, do a quick check and clean on mount. There are mount options for full check, degraded and recovery modes. About the paper https://bcachefs.org/bcachefs-principles-of-operation.pdf https://bcachefs.org/bcachefs-principles-of-operation.pdf