sm-3.2.12-23.5.xcpng8.3.x86_64 across all three hosts.
Just tried running through the chain of repair and restart, and I'm getting this on the latest as well:
[12:49 host1 ~]# xe vm-start uuid=c0faf508-9f14-e091-43b1-d6c5ef7e07d4
Error code: SR_BACKEND_FAILURE_1200
Error parameters: , [Errno 30] Read-only file system: '/dev/drbd/by-res/xcp-volume-693829e3-0b60-4b0c-bed2-611995ec83f1/0',