<snip>...
error: fusion_mid_tree: btn: invalid o_oid (0x2ec2b)
Fusion data structures are invalid.[/b]
The volume /dev/disk1s2 could not be verified completely.
Storage system check exit code is 8.
Operation successful.
Operation successful?? Blimey I can't imagine why with the error indicated! Googling shows that this and similar fusion drive errors are common but none of the discussions about them reveal a solution that gives me any confidence. I think I might get into a chat with Apple Support...
I suppose that like the old apocryphal story where the doctor comes in to tell the family, "The operation was a complete success, unfortunately the patient died", "
Operation successful" depends on your understanding of what the
Operation is and what constitutes
success. It took an extra year to make APFS compatible with fusion drives and it occurs to me First Aid might not have caught up completely.
Please report back what you get from Apple Tech Support.
