The VHD is about 80GB and this is one of the smaller ones. Do you have a secure location that I can upload it. The VHD has client data on it, so even if I scrub it, I don't want accessible publicly.

Both the built community edition and the XOA appliance seem to have this issue.

That one does not. I assumed that was the case for another one that had the issue, and working to move the VMs to VHDs that are not on LVM.

# pvdisplay
  --- Physical volume ---
  PV Name               /dev/xvda2
  VG Name               centos
  PV Size               79.51 GiB / not usable 3.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              20354
  Free PE               16
  Allocated PE          20338
  PV UUID               zkCwDd-03ZP-LhLO-drIw-5fpY-Bf7f-J99g0U

I am seeing the same issue with LVM restores. Exists between Trial and Community editions.

backupNg.listFiles
{
  "remote": "c6f2b11a-4065-4a8b-b75f-e16bf2aeb5f5",
  "disk": "xo-vm-backups/8a0d70df-9659-b307-43f4-fc37133d9d66/vdis/2dcbfc0b-5d0a-4f84-b7ec-e89b1747e0b4/47f611b1-7c83-4319-9fcf-aad09a025edc/20200319T145807Z.vhd",
  "path": "/",
  "partition": "ea853d6d-01"
}
{
  "command": "mount --options=loop,ro,offset=1048576 --source=/tmp/tmp-458p174rEvrE3fU/vhdi1 --target=/tmp/tmp-458llR4TibV7F12",
  "exitCode": 32,
  "stdout": "",
  "stderr": "mount: /tmp/tmp-458llR4TibV7F12: failed to setup loop device for /tmp/tmp-458p174rEvrE3fU/vhdi1.",
  "failed": true,
  "timedOut": false,
  "isCanceled": false,
  "killed": false,
  "message": "Command failed with exit code 32: mount --options=loop,ro,offset=1048576 --source=/tmp/tmp-458p174rEvrE3fU/vhdi1 --target=/tmp/tmp-458llR4TibV7F12",
  "name": "Error",
  "stack": "Error: Command failed with exit code 32: mount --options=loop,ro,offset=1048576 --source=/tmp/tmp-458p174rEvrE3fU/vhdi1 --target=/tmp/tmp-458llR4TibV7F12
    at makeError (/opt/xen-orchestra/node_modules/execa/lib/error.js:56:11)
    at handlePromise (/opt/xen-orchestra/node_modules/execa/index.js:114:26)
    at <anonymous>"
}