Migrations don't complete. The final handoff doesn't finish, and they sit at 100%. VM reboots result in the underlying VDI becoming unavailable. A VM that was running just fine gets a reboot and I have to go through the process of 'xl list' 'xl destroy <X>' etc. And then on attempted start:

Error code: SR_BACKEND_FAILURE_46
Error parameters: , The VDI is not available [opterr=VDI 6c8fe996-2466-47ef-993b-0de3b66da92e not detached cleanly],

This is becoming a regular occurrence, and I'm not sure what to do to stop this. My environment is slowly degrading. But it definitely seems like its an issue within the SR.

Any help would be appreciated.