Hi Murlio,
Thanks for that.
Yes, iSCSI Target is configured with ACL
Yes, all the Gateways have the same amount of sessions.
Yes, I followed your 6 step-suggestion.
So what happened is - and I won't go into all the boring details of how, why, and how
- I discovered the remains of another iSCSI Target on the 2nd Gateway. Installing and
using tergetcli I removed this old target, which allowed me to then remove and then
re-attach the 2nd Gateway to the "real" target (using the Ceph GUI - resetting
the gateways to be identical once again), and then ran through the 6-steps. I now have all
three oVirt Hosts logged into all three Ceph iSCSI Gateways, with each of the four LUNs
reporting connectivity to all three Gateways, etc.
So that's the Gateways-connectivity issue resolved.
However, I still have the other issue: I still come up with the "The following LUNs
are already in use..." message and I still have the same results - ie log messages
re: connectivity issues with the new (iSCSI) Storage domain briefly appearing and then
being removed again (see 1st post in this thread).
This happens with all four LUNs no matter which of the three Gateways I point oVirt Admin
GUI at. (Yes, I tried this twelve times to cover the twelve possible combinations).
So, anyone got any further ideas? :-)
Cheers
Dulux-Oz