• OS: Ubuntu Server 18.04
• CPU: Ryzen 5 1600 6-core 3.2GHz
• RAM: 32GB DDR4 2400
• Services
  • Virtual Machine Host
  • apcupsd
  • NFS server
  • getmail gmail backup

• sda (2TB SATA WD Green)
  • sda1 (1GB, ext4, old /boot)
  • sda2 (5GB, old swap)
  • sda3 (50GB, old /)
  • sda4 (1.8TB, LVM2 physical partition)
    • pegasus (1TB, /pegasus)
    • extra_vms (400GB, /mnt/extra_vms)
    • rest unused
• sdb (1TB WD Blue 1TB SATA 6 Gb/s 7200 RPM)
  • sdb1 (1TB, /backup)
• sdc (500G WD SATA)
  • sdc1 (512M, /boot/efi)
  • sdc2 (238G, ext4, /)
• sdd (2TB SATA WD Red 2TB NAS Hard Disk Drive - 5400 RPM)
  • sdd1 (2TB, ext4, mythtv)

• nvme0n1 (256GB WD Black Performance SSD - M.2 2280 PCIe NVMe)
  • nvme0n1p1 (256MB, /boot/efi)
  • nvme0n1p2 (240GB, /)

• MAC: 12:34:07
• OS: Ubuntu Server 18.04
• RAM: 1GB
• Services
  • openvpn server
  • squid

Exporting an NFS mount via NFS.

/pegasus/pub/music 192.168.0.0/16(ro,async,no_subtree_check,fsid=2)

• MAC: 12:34:04
• OS: Ubuntu 16.04 Server
• RAM: 2GB
• Services
  • git-daemon
  • cgit
  • gitolite

• MAC: 12:34:06
• OS: Ubuntu 18.04 Server
• RAM: 4GB
• CPUs: 2

• MAC: 12:34:03
• OS: Ubuntu 16.04 Server
• RAM: 2GB
• CPUs: 2
• Services
  • apache2
    • dokuwiki
    • tt-rss
    • cgit (proxy)
    • cameras (proxy)
    • mythweb (proxy)

• MAC: 12:34:05
• OS: Mythbuntu 16.04 (mythtv updates repository enabled for 0.29)
• RAM: 4GB
• CPUs: 2
• Services
  • MythTV Backend

On startup it seems that the NFS exports are getting applied before DNS is available, so the /etc/exports entries do not work properly. I created an /etc/rc.local script with these contents to rectify this:

#!/bin/sh

exportfs -a
sleep 2
exportfs -a
sleep 3
exportfs -a
sleep 5
exportfs -a
sleep 10
exportfs -a

To delay VM startup so the VM has a chance to mount NFS, add the following to /lib/systemd/system/libvirt-guests.service:

ExecStartPre=/bin/sleep 20