Thanks to everyone’s help with the commands to use for investigation, this drbdsetup show command helped me find why they aren’t connecting, although I haven’t figured out how to correct it yet.
Reminder of my topology (not all NICs shown):
According to the drbsetup show output, for some reason srv7 is trying to talk to srv8 over the wrong interface i.e. it is trying to connect to 10.4.17.41 from 10.4.17.33. I remember setting prefnic stuff and some settings around this in the past, and everything was working. Now, for some reason this connection affinity stuff isn’t working. Also, my intent was that if a direct connect was down it would route the connection over the admin interface (10.4.0.*), and testing this also worked at some point.
Some settings seem to have gotten lost. linstor node-connection list and linstor node-connection path list for any of the three nodes doesn’t show any properties or anything. It looks like there is still a prefnic property set but that isn’t enough. Here is a thread I created when I was first setting up and followed that advice:
I think there are some new capabilities now regarding mutliple paths and direct connects so I’m going to re-read those sections of the manual and see if I can get this working again. I still don’t have root cause of how some of the settings seem gone now but at least there is some light at the end of the tunnel.
Thanks for the help!