WP7252:
During today's CDS meeting Rolf reported that moving the fast front-end computer's IRIG-B card away from slot-1 resolved timing issues on his test system. To try this out on a production system, this afternoon I moved h1susey's IRIG-B card.
Recall (alog 39361) that on 09nov2017 I had moved h1susey's OneStop from slot-2 to slot-5 as part of this investigation. Today I returned the OneStop back to slot-2, and moved the IRIG-B card from slot-1 to the newly vacated slot-5.
| slot id | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| before | empty | empty | OneStop | 5565 | Dolphin | empty | IRIG-B |
| after | empty | empty | IRIG-B | 5565 | Dolphin | OneStop | empty |
It was a messy restart of h1susey. After taking it out of the Dolphin fabric and issuing the poweroff command, the OS got stuck trying to umount NFS after apparently disabling its network ports. I had to power down using the front panel button, knowing that this would most probably cause a Dolphin glitch. Sure enough, on restoration of power the EY dolphin fabric glitched, requiring a restart of models on h1seiey and h1iscey. EY is now back in operation.
I also took the opportunity to move the eyws1 iMac workstation to EY. It is located on a cart parked by the computer racks.
Unfortunately there were two h1iopsusey blips this morning at 03:20 and 06:02 PST.