Create Opnsense Backup Image

First, need to enable NFS Client:

Create/Add line to rc.conf

nano /etc/rc.conf

This line:

nfs_client_enable="YES"

Then enable and start NFS Client

service nfsclient enable

service nfsclient start

Now add mount point to /etc/fstab

nano /etc/fstab

For example:

192.168.1.101:/mnt/nfs-server  /mnt/nfs-client   nfs   rw   0   0

NFS Share may become unable after router restart and may won’t start so better to mount it manually!

mount -t nfs 192.168.1.101:/mnt/nfs-server  /mnt/nfs-client

Now find system disk:

geom disk list

And start to clone it.

dd if=/dev/nda0 of=/mnt/nfs-client/opnsense.img bs=16k status=progress

Manuals