I noticed this morning that the same kind messages are now showing up in my system.log
I have been watching it intently as I rebuild my storage server as a MacMini.
Here is a sample of the log with no need to repeat the next line a million times.... It is periodic at about 30 second interval with 3 at each burst.
Aug 13 09:08:30 macmini.company.com AppleFileServer[886]: _Assert: /SourceCache/afpserver/afpserver-644.90.3/afpserver/FPCarbonVol.cpp, 71 (-35)
Aug 13 09:08:42 --- last message repeated 1 time ---
Aug 13 09:08:42 macmini2.company.com AppleFileServer[886]: Logged out 0x7f7f89831400
The last one happens as a TimeMachine backup session completes and a machine drops the connection...
What seems to be the case is that these are related to TimeMachine AFP connections. I don't think they have a cooresponence to other traffic.
Here's my setup listed backwards because of a sense of layered is what I am trying to do...
Layered approach to Storage
Layer 7 - Monitoring Software - Datadog Agent ( web service ), OS X Server "native" monitoring, CLI - tails of this and that in this and that log.... and this and that cli commands iostat, top, lsof, netstat, etc...
Layer 6 - Application - SoftRAID and OWC WebGUI RAID Controller/Monitor - The SoftRAID certified volumes are then SoftRAID Mirrored to a Primary ( which is the Hardware RAID Pair ) and this Secondary SoftRAID mirror is a single hard disk which is mounted periodically as a backup of the primary hardware mirrored pair.
Layer 5.1 - SoftRAID kext ( Version 4.5.4 ) - ( SoftRAID 5 has not yet been installed here. )
Layer 5 - Mavericks (10.9.4) with OS X Server
Layer 4 - One meter Thunderbolt cable to MacMini
Layer 3 - OWC Helios with a OWC NewerTech 6G 4 Port eSATA RAID card with a 20 disk "limit" - Pairs of disks are formatted and initialized and mirror with this card and then certified by SoftRAID on top as a volume.
Layer 2 - in SansDigital 5 Bay PM ( Port Multiplier ) Enclosures connected eSATA to Card above.
Layer 1- Hard Disks - Mostly WD Black 1TB, and WD Reds 2TB ( as Mirrored Pairs see above)
Services:
DNS - Mirror Only
DHCP - To a small number of devices.
TimeMachine Server - 10-20 machines
AFP because of TimeMachine above
CrashPlan Server - 20-30 machines
Total Storage is a few TBs - Maximum of 14 Disks spinning when this setup is fully loaded. Normally only 10 disks with 5 LUNs