[CentOS] NFS Server on Centos 7.6.1810 dying without reason

Sat Sep 7 10:50:24 UTC 2019
hw <hw at gc-24.de>

On Fri, 30 Aug 2019 16:25:40 -0500
Erick Perez - Quadrian Enterprises <eperez at quadrianweb.com> wrote:

> I managed to get NFS statistics just before server rebooted.
> I can reproduce this every time.
> Question: Am I saturating the SATA bus on the NFS server so violently
> with the SSDs that the server hard reboots?
> Perhaps due to the RAID 6 nature of operations?
> Server info
> AMD EPYC 7281 16CORE
> 32 GIG RAM
> 6xSATA3 SSD 1.9TB in mdadm RAID6
> OS: Centos 7.6
> SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA
> Controller [AHCI mode] (rev 51)
> [...]

First I'd replace the network card, preferably with something like an
Intel e1000.  Perhaps use a dedicated network card for the server
itself and another card for the KVM clients.