This reminds me of discovering that some of my backups had bad blocks on the disk. And the backup is in the shape of a contiguous .tar.lzo archive of around 50

This reminds me of discovering that some of my backups had bad blocks on the disk. And the backup is in the shape of a contiguous .tar.lzo archive of around 50 GB size; sometimes solid archives like that are not the most robust option.. Fortunately I have other full snapshots.