I have a server with Win2008R2 and a synology NAS. On the Nas there are 6 iSCSI partitions which are mounted on the windows server. The windows server is virtualized under Hyper-V.
After rebooting the client machine, two of the 6 partitions do not remount and I have to manually remount them... every time.
Each one has a similar configuration and has been configured with CHAP authentication. All 6 appear in the favourites list.
Event log shows no errors regarding iSCSI. The other 4 partitions mount without problems.
Any suggestions for further debugging?
EDIT: After speaking with synology they suggested disabling chap authentication and enabling something called masking, which is basically a filter to block which nodes can connec to each LUN. This made a huge difference to the problem. It still occurs every now and again after power outages or similar, but after reboots I can be pretty much certain that the luns will remount. I guess its an issue between the windows iscsi initiator and the target in authentication negotiation.