archiver appliance - PVs not reconnecting

[Pierrick M Hanlet via Tech-talk <tech-talk at aps.anl.gov>]

This problem is similar to 
https://epics.anl.gov/tech-talk/2020/msg01951.php, but not the same.

I have an archiver appliance which has been happily running on a Alma 
Linux server for several months. We had a
maintenance shutdown  which turned off the IOC servers, but the archiver 
remained active.  When the system
came back up again, ~150 PVs, which I verified as alive and active, 
would not reconnect, whereas thousands more
did reconnect as usual.  Any ideas?

Question: If I remove these PVs from the archiver and then add them back 
in, will we lose historical data?
Many thanks,
Pierrick

-- 
Pierrick Hanlet
Fermi National Accelerator
Accelerator Front End Controls
+1-630-840-5555 -- lab
+1-312-687-4980 -- mobile

"Whether you think you can or think you can't, you're right" -- Henry Ford