For the disk corruption and other issues, I would recommend creating a support ticket [1] if you have SUSE support. I may be misunderstanding your setup, but if you are running Longhorn on RAID10 disks, then you are effectively running a distributed storage system on a distributed storage system. I wouldn’t be surprise if you experienced increased data corruption from that because all the disk writes would be compounded. It is recommended running Longhorn directly on physical disks.
I would also check out the best practices for Longhorn here [2]. You can reduce the replica count to 2 for better performance, and run recurring jobs for cleanup up snapshots.
[1] https://scc.suse.com/home
[2] https://longhorn.io/docs/1.9.1/best-practices/