Got called at 14:15UTC due to assistance required. I *believe* the issue was that the NLN timer had run out, but by the time I logged on we were in Observing. We had been in OMC_WHITENING for about an hour presumeably damping violins. It looks like the total amount of time we were trying to relock after completing an initial alignment was almost 3.5 hours. The strange thing is that looking at the H1_MANAGER log, it looks like the NLN timer ran out at 12:42UTC, triggering H1_MANAGER to enter ASSISTANCE_REQ, but like I said, I did not get called until 14:15UTC. There was also something weird going on with the IFO_NOTIFY guardian too, when I logged on it was rapidly cycling between ALERT_ACTIVE and WAITING, although it looks like the cycling started once we got into Observing, so that might have just been due to no longer needing the alert (although I never noticed it doing that on other similar occassions but maybe that's just me missing it).
All is good and we've been Observing for 30 minutes.
This is a bit of a conflict from H1_MANAGER and IFO_NOTIFY. Since the IFO was able to get back to Observing on its own, even after H1_MANAGER timed out and triggered the initial Assistance_Required (H1_MANAGER state) and Alert_Active (IFO_NOITFY state), IFO_NOTIFY would clear that state when we got back to observing, but H1_MANAGER would not. Since H1_MANAGER was still in Assistance_Required, then IFO_NOTIFY would bounce between Alert_Active and Waiting. I'll add something into H1_MANAGER to also clear the alert when we get back into observing to avoid this in the future.
I have no idea why Oli wasn't called until 14UTC, as the states of both IFO_NOTIFY and H1_MANAGER definitely changed two hours earlier. I'll check with Dave to see if Twillo threw any errors.