@Danp
Thanks for that command, I had a similar command I found but it didn't display the timestamp fully so I couldn't pinpoint the time of the message, but I had a feeling this was there the issue was.
[Fri Aug 7 16:26:44 2026] CIFS VFS: Server 192.168.x.x has not responded in 120 seconds. Reconnecting...
Lots of these types of messages since yesterday.
And df -h does hang as that's something I was testing yesterday when debugging to see if some disk had got full that I hadn't spotted.
There has definitely been a few network disconnects over the past 24 hours as I was testing various things which requires a bit of fiddling with the cables and jumping between networks, and it's quite possible that this happened during the backup window but I can't recall for sure.
The Storage Repositories are all reporting as working correctly in XO, XOA, XCP-ng Centre.
What's the next steps to fix this?
I assume there is a way without deleting the Storage Repository in either XO/XOA/XCP-ng Centre and re-attaching it?