AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40
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Message ID: 541     Entry time: Wed Mar 29 05:08:04 2017
Author: TD 
Subject: Report - medium - delayed or missing authenticated mount requests following FEE64 power cycle 
This is not, I think, a new observation.

Following FEE64 power cycles we sometimes observe delayed ( ~5-15 minutes ) authenticated mount requests
as the FEE64s mount their root filesystem from the AIDA server aidas1 - see attachment 1. 

There also appears to be an instance of a *missing* authenticated mount request - nnaida10 at 19.51

So this is *a* (but probably not *the*) cause of FEE64 timeouts observed following a FEE64 power cycle
and then waiting 10 minutes before attempting to start the MIDAS DAQ.


I have noticed that these issues appear to be significantly worse when we are using NTFS-mounted USB disks
to backup data from the AIDA server internal disks. Indeed, performance in general is noticeably slower when
using the NTFS-mounted USB disks.

Currently, we attempt to mitigate these issues by either throttling rsync or nice'ing cp. 
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