Since the host is not listing the devices , it is obvious datastores will also not be mounted.
1.You have to check at storage end if luns are still presented to the host.
2.Try rebooting the host once if rescan doesnt help.
3. Check if the HBA has any hardware issue.
Since it was working before , I dont think this could be due to driver issue unless there was not software change done on the host.
The host was updated a while back, cant recall whether the storage presentation stopped after this update.
Reboots don't resolve anything.
The LUNs are still presented to the host at the storage end, and all other hosts can see and access them fine, just this one
compare the firmware and driver of the HBA with working and non-working host ? Are you seeing any errors in vmkernel logs related to HBA ?
Please provide the following details
firmware and driver details of the card
vmkernel log file
One thing you may want to check is your storage path count on each ESXi host. The path limit per host is 1024. We had issues where we exceeded this count, and LUNS/Datastores would randomly disappear.
It seems LUN was present earlier on this host, that's why there is meta data
You can try this workaround
1. Remove the LUN only for this host from the storage side.
2. Put the host in maintenance mode
3. Power off ( not restart)
4. Power on and connect by root (vc-client)
5. Ask from storage team to present LUN to this host
If it not work you need to remove host from inventory , but you required add host and configure in DVS if you are using.